Changeset c11e31c for translator/Parser


Ignore:
Timestamp:
May 14, 2015, 1:44:55 PM (9 years ago)
Author:
Peter A. Buhr <pabuhr@…>
Branches:
ADT, aaron-thesis, arm-eh, ast-experimental, cleanup-dtors, ctor, deferred_resn, demangler, enum, forall-pointer-decay, gc_noraii, jacob/cs343-translation, jenkins-sandbox, master, memory, new-ast, new-ast-unique-expr, new-env, no_list, persistent-indexer, pthread-emulation, qualifiedEnum, resolv-new, string, with_gc
Children:
4bf5298
Parents:
d4778a6
Message:

add inline and attribute qualifiers, cfa.y comment formatting, fix error message in isIntegralType

Location:
translator/Parser
Files:
4 edited

Legend:

Unmodified
Added
Removed

  • translator/Parser/DeclarationNode.cc

    rd4778a6 rc11e31c  
    5050const char *storageClassName[] = {
    5151    // order must correspond with DeclarationNode::StorageClass
     52    "extern",
    5253    "static",
    5354    "auto",
    54     "extern",
    5555    "register",
    5656    "inline",
    … …  
    880880Declaration::StorageClass DeclarationNode::buildStorageClass() const {
    881881    static const Declaration::StorageClass scMap[] = { 
     882        Declaration::Extern,
    882883        Declaration::Static,
    883884        Declaration::Auto,
    884         Declaration::Extern,
    885885        Declaration::Register,
    886         Declaration::NoStorageClass, // inline
     886        Declaration::Inline,
    887887        Declaration::Fortran
    888888    }; 

  • translator/Parser/ParseNode.h

    rd4778a6 rc11e31c  
    262262class DeclarationNode : public ParseNode {
    263263  public:
    264     enum Qualifier { Const, Restrict, Volatile, Lvalue, Atomic };
    265     enum StorageClass { Static, Auto, Extern, Register, Inline, Fortran };
     264    enum Qualifier { Const, Restrict, Volatile, Lvalue, Atomic, Attribute };
     265    enum StorageClass { Extern, Static, Auto, Register, Inline, Fortran };
    266266    enum BasicType { Char, Int, Float, Double, Void, Bool, Complex, Imaginary };
    267267    enum Modifier { Signed, Unsigned, Short, Long };

  • translator/Parser/TypeData.cc

    rd4778a6 rc11e31c  
    544544          case DeclarationNode::Atomic:
    545545            q.isAtomic = true;
     546            break;
     547          case DeclarationNode::Attribute:
     548            q.isAttribute = true;
    546549            break;
    547550        }

  • translator/Parser/cfa.y

    rd4778a6 rc11e31c  
    1 /*                               -*- Mode: C -*-
    2  *
    3  * CForall Grammar Version 1.0, Copyright (C) Peter A. Buhr 2001 -- Permission is granted to copy this
    4  *      grammar and to use it within software systems.  THIS GRAMMAR IS PROVIDED "AS IS" AND WITHOUT
    5  *      ANY EXPRESS OR IMPLIED WARRANTIES.
    6  *
    7  * cfa.y --
    8  *
    9  * Author           : Peter A. Buhr
    10  * Created On       : Sat Sep  1 20:22:55 2001
    11  * Last Modified By : Peter A. Buhr
    12  * Last Modified On : Wed Apr 15 15:11:16 2015
    13  * Update Count     : 913
    14  */
    15 
    16 /* This grammar is based on the ANSI99/11 C grammar, specifically parts of EXPRESSION and STATEMENTS, and on
    17    the C grammar by James A. Roskind, specifically parts of DECLARATIONS and EXTERNAL DEFINITIONS.  While
    18    parts have been copied, important changes have been made in all sections; these changes are sufficient to
    19    constitute a new grammar.  In particular, this grammar attempts to be more syntactically precise, i.e., it
    20    parses less incorrect language syntax that must be subsequently rejected by semantic checks.  Nevertheless,
    21    there are still several semantic checks required and many are noted in the grammar. Finally, the grammar is
    22    extended with GCC and CFA language extensions. */
    23 
    24 /* Acknowledgments to Richard Bilson, Glen Ditchfield, and Rodolfo Gabriel Esteves who all helped when I got
    25    stuck with the grammar. */
    26 
    27 /* The root language for this grammar is ANSI99/11 C. All of ANSI99/11 is parsed, except for:
    28 
    29    1. designation with '=' (use ':' instead)
    30 
    31    Most of the syntactic extensions from ANSI90 to ANSI11 C are marked with the comment "C99/C11". This grammar
    32    also has two levels of extensions. The first extensions cover most of the GCC C extensions, except for:
    33 
    34    1. nested functions
    35    2. generalized lvalues
    36    3. designation with and without '=' (use ':' instead)
    37    4. attributes not allowed in parenthesis of declarator
    38 
    39    All of the syntactic extensions for GCC C are marked with the comment "GCC". The second extensions are for
    40    Cforall (CFA), which fixes several of C's outstanding problems and extends C with many modern language
    41    concepts. All of the syntactic extensions for CFA C are marked with the comment "CFA". As noted above,
    42    there is one unreconcileable parsing problem between C99 and CFA with respect to designators; this is
    43    discussed in detail before the "designation" grammar rule. */
     1//                              -*- Mode: C++ -*-
     2//
     3// CForall Grammar Version 1.0, Copyright (C) Peter A. Buhr 2001
     4//
     5// cfa.y --
     6//
     7// Author           : Peter A. Buhr
     8// Created On       : Sat Sep  1 20:22:55 2001
     9// Last Modified By : Peter A. Buhr
     10// Last Modified On : Tue May 12 17:24:53 2015
     11// Update Count     : 963
     12//
     13
     14// This grammar is based on the ANSI99/11 C grammar, specifically parts of EXPRESSION and STATEMENTS, and on the C
     15// grammar by James A. Roskind, specifically parts of DECLARATIONS and EXTERNAL DEFINITIONS.  While parts have been
     16// copied, important changes have been made in all sections; these changes are sufficient to constitute a new grammar.
     17// In particular, this grammar attempts to be more syntactically precise, i.e., it parses less incorrect language syntax
     18// that must be subsequently rejected by semantic checks.  Nevertheless, there are still several semantic checks
     19// required and many are noted in the grammar. Finally, the grammar is extended with GCC and CFA language extensions.
     20
     21// Acknowledgments to Richard Bilson, Glen Ditchfield, and Rodolfo Gabriel Esteves who all helped when I got stuck with
     22// the grammar.
     23
     24// The root language for this grammar is ANSI99/11 C. All of ANSI99/11 is parsed, except for:
     25//
     26// 1. designation with '=' (use ':' instead)
     27//
     28// Most of the syntactic extensions from ANSI90 to ANSI11 C are marked with the comment "C99/C11". This grammar also has
     29// two levels of extensions. The first extensions cover most of the GCC C extensions, except for:
     30//
     31// 1. nested functions
     32// 2. generalized lvalues
     33// 3. designation with and without '=' (use ':' instead)
     34// 4. attributes not allowed in parenthesis of declarator
     35//
     36// All of the syntactic extensions for GCC C are marked with the comment "GCC". The second extensions are for Cforall
     37// (CFA), which fixes several of C's outstanding problems and extends C with many modern language concepts. All of the
     38// syntactic extensions for CFA C are marked with the comment "CFA". As noted above, there is one unreconcileable
     39// parsing problem between C99 and CFA with respect to designators; this is discussed in detail before the "designation"
     40// grammar rule.
    4441
    4542%{
    46 #define YYDEBUG_LEXER_TEXT (yylval)                     /* lexer loads this up each time */
    47 #define YYDEBUG 1                                       /* get the pretty debugging code to compile*/
     43#define YYDEBUG_LEXER_TEXT (yylval)                     // lexer loads this up each time
     44#define YYDEBUG 1                                       // get the pretty debugging code to compile
    4845
    4946#undef __GNUC_MINOR__
    … …  
    5653#include "LinkageSpec.h"
    5754
    58 DeclarationNode *theTree = 0;                           /* the resulting parse tree */
     55DeclarationNode *theTree = 0;                           // the resulting parse tree
    5956LinkageSpec::Type linkage = LinkageSpec::Cforall;
    6057std::stack< LinkageSpec::Type > linkageStack;
    … …  
    6259%}
    6360
    64 /************************* TERMINAL TOKENS ********************************/
    65 
    66 /* keywords */
     61//************************* TERMINAL TOKENS ********************************
     62
     63// keywords
    6764%token TYPEDEF
    6865%token AUTO EXTERN REGISTER STATIC
    69 %token INLINE                                           /* C99 */
    70 %token FORTRAN                                          /* C99, extension ISO/IEC 9899:1999 Section J.5.9(1) */
     66%token INLINE                                           // C99
     67%token FORTRAN                                          // C99, extension ISO/IEC 9899:1999 Section J.5.9(1)
    7168%token CONST VOLATILE
    72 %token RESTRICT                                         /* C99 */
    73 %token FORALL LVALUE                                    /* CFA */
     69%token RESTRICT                                         // C99
     70%token FORALL LVALUE                                    // CFA
    7471%token VOID CHAR SHORT INT LONG FLOAT DOUBLE SIGNED UNSIGNED
    75 %token BOOL COMPLEX IMAGINARY                           /* C99 */
    76 %token TYPEOF LABEL                                     /* GCC */
     72%token BOOL COMPLEX IMAGINARY                           // C99
     73%token TYPEOF LABEL                                     // GCC
    7774%token ENUM STRUCT UNION
    78 %token TYPE FTYPE DTYPE CONTEXT                         /* CFA */
     75%token TYPE FTYPE DTYPE CONTEXT                         // CFA
    7976%token SIZEOF
    80 %token ATTRIBUTE EXTENSION                              /* GCC */
     77%token ATTRIBUTE EXTENSION                              // GCC
    8178%token IF ELSE SWITCH CASE DEFAULT DO WHILE FOR BREAK CONTINUE GOTO RETURN
    82 %token CHOOSE FALLTHRU TRY CATCH FINALLY THROW          /* CFA */
    83 %token ASM                                              /* C99, extension ISO/IEC 9899:1999 Section J.5.10(1) */
    84 %token ALIGNAS ALIGNOF ATOMIC GENERIC NORETURN STATICASSERT THREADLOCAL /* C11 */
    85 
    86 /* names and constants: lexer differentiates between identifier and typedef names */
     79%token CHOOSE FALLTHRU TRY CATCH FINALLY THROW          // CFA
     80%token ASM                                              // C99, extension ISO/IEC 9899:1999 Section J.5.10(1)
     81%token ALIGNAS ALIGNOF ATOMIC GENERIC NORETURN STATICASSERT THREADLOCAL // C11
     82
     83// names and constants: lexer differentiates between identifier and typedef names
    8784%token<tok> IDENTIFIER          QUOTED_IDENTIFIER       TYPEDEFname             TYPEGENname
    8885%token<tok> ATTR_IDENTIFIER     ATTR_TYPEDEFname        ATTR_TYPEGENname
    8986%token<tok> INTEGERconstant     FLOATINGconstant        CHARACTERconstant       STRINGliteral
    90 %token<tok> ZERO                ONE                     /* CFA */
    91 
    92 /* multi-character operators */
     87%token<tok> ZERO                ONE                     // CFA
     88
     89// multi-character operators
    9390%token ARROW                    /* ->                           */
    9491%token ICR DECR                 /* ++   --                      */
    … …  
    103100%token ANDassign        ERassign        ORassign        /* &=   ^=      |=      */
    104101
    105 /* Types declaration */
     102// Types declaration
    106103%union
    107104{
    108   Token tok;
    109   ParseNode *pn;
    110   ExpressionNode *en;
    111   DeclarationNode *decl;
    112   DeclarationNode::TyCon aggKey;
    113   DeclarationNode::TypeClass tclass;
    114   StatementNode *sn;
    115   ConstantNode *constant;
    116   InitializerNode *in;
     105    Token tok;
     106    ParseNode *pn;
     107    ExpressionNode *en;
     108    DeclarationNode *decl;
     109    DeclarationNode::TyCon aggKey;
     110    DeclarationNode::TypeClass tclass;
     111    StatementNode *sn;
     112    ConstantNode *constant;
     113    InitializerNode *in;
    117114}
    118115
    … …  
    121118%type<constant> string_literal_list
    122119
    123 /* expressions */
     120// expressions
    124121%type<constant> constant
    125122%type<en> tuple                         tuple_expression_list
    … …  
    134131%type<en> subrange
    135132
    136 /* statements */
     133// statements
    137134%type<sn> labeled_statement     compound_statement      expression_statement    selection_statement
    138135%type<sn> iteration_statement   jump_statement          exception_statement     asm_statement
    … …  
    146143%type<pn> handler_list          handler_clause          finally_clause
    147144
    148 /* declarations */
     145// declarations
    149146%type<decl> abstract_array abstract_declarator abstract_function abstract_parameter_array
    150147%type<decl> abstract_parameter_declaration abstract_parameter_declarator abstract_parameter_function
    … …  
    228225%type<decl> variable_abstract_ptr variable_array variable_declarator variable_function variable_ptr
    229226
    230 /* initializers */
     227// initializers
    231228%type<in>  initializer initializer_list initializer_opt
    232229
    233 /* designators */
     230// designators
    234231%type<en>  designator designator_list designation
    235232
    236233
    237 /* Handle single shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string
    238    is ambiguous:
    239   .---------.                  matches IF '(' comma_expression ')' statement
    240   if ( C ) S1 else S2
    241   `-----------------'  matches IF '(' comma_expression ')' statement ELSE statement */
    242 
    243 %nonassoc THEN  /* rule precedence for IF '(' comma_expression ')' statement */
    244 %nonassoc ELSE  /* token precedence for start of else clause in IF statement */
    245 
    246 %start translation_unit                                 /* parse-tree root */
     234// Handle single shift/reduce conflict for dangling else by shifting the ELSE token. For example, this string is
     235// ambiguous:
     236// .---------.                  matches IF '(' comma_expression ')' statement
     237// if ( C ) S1 else S2
     238// `-----------------'  matches IF '(' comma_expression ')' statement ELSE statement */
     239
     240%nonassoc THEN  // rule precedence for IF '(' comma_expression ')' statement
     241%nonassoc ELSE  // token precedence for start of else clause in IF statement
     242
     243%start translation_unit                                 // parse-tree root
    247244
    248245%%
    249 /************************* Namespace Management ********************************/
    250 
    251 /* The grammar in the ANSI C standard is not strictly context-free, since it relies upon the distinct terminal
    252    symbols "identifier" and "TYPEDEFname" that are lexically identical.  While it is possible to write a
    253    purely context-free grammar, such a grammar would obscure the relationship between syntactic and semantic
    254    constructs.  Hence, this grammar uses the ANSI style.
    255 
    256    Cforall compounds this problem by introducing type names local to the scope of a declaration (for instance,
    257    those introduced through "forall" qualifiers), and by introducing "type generators" -- parametrized types.
    258    This latter type name creates a third class of identifiers that must be distinguished by the scanner.
    259 
    260    Since the scanner cannot distinguish among the different classes of identifiers without some context
    261    information, it accesses a data structure (the TypedefTable) to allow classification of an identifier that
    262    it has just read.  Semantic actions during the parser update this data structure when the class of
    263    identifiers change.
    264 
    265    Because the Cforall language is block-scoped, there is the possibility that an identifier can change its
    266    class in a local scope; it must revert to its original class at the end of the block.  Since type names can
    267    be local to a particular declaration, each declaration is itself a scope.  This requires distinguishing
    268    between type names that are local to the current declaration scope and those that persist past the end of
    269    the declaration (i.e., names defined in "typedef" or "type" declarations).
    270 
    271    The non-terminals "push" and "pop" derive the empty string; their only use is to denote the opening and
    272    closing of scopes.  Every push must have a matching pop, although it is regrettable the matching pairs do
    273    not always occur within the same rule.  These non-terminals may appear in more contexts than strictly
    274    necessary from a semantic point of view.  Unfortunately, these extra rules are necessary to prevent parsing
    275    conflicts -- the parser may not have enough context and look-ahead information to decide whether a new
    276    scope is necessary, so the effect of these extra rules is to open a new scope unconditionally.  As the
    277    grammar evolves, it may be neccesary to add or move around "push" and "pop" nonterminals to resolve
    278    conflicts of this sort.  */
     246//************************* Namespace Management ********************************
     247
     248// The grammar in the ANSI C standard is not strictly context-free, since it relies upon the distinct terminal symbols
     249// "identifier" and "TYPEDEFname" that are lexically identical.  While it is possible to write a purely context-free
     250// grammar, such a grammar would obscure the relationship between syntactic and semantic constructs.  Hence, this
     251// grammar uses the ANSI style.
     252//
     253// Cforall compounds this problem by introducing type names local to the scope of a declaration (for instance, those
     254// introduced through "forall" qualifiers), and by introducing "type generators" -- parametrized types.  This latter
     255// type name creates a third class of identifiers that must be distinguished by the scanner.
     256//
     257// Since the scanner cannot distinguish among the different classes of identifiers without some context information, it
     258// accesses a data structure (the TypedefTable) to allow classification of an identifier that it has just read.
     259// Semantic actions during the parser update this data structure when the class of identifiers change.
     260//
     261// Because the Cforall language is block-scoped, there is the possibility that an identifier can change its class in a
     262// local scope; it must revert to its original class at the end of the block.  Since type names can be local to a
     263// particular declaration, each declaration is itself a scope.  This requires distinguishing between type names that are
     264// local to the current declaration scope and those that persist past the end of the declaration (i.e., names defined in
     265// "typedef" or "type" declarations).
     266//
     267// The non-terminals "push" and "pop" derive the empty string; their only use is to denote the opening and closing of
     268// scopes.  Every push must have a matching pop, although it is regrettable the matching pairs do not always occur
     269// within the same rule.  These non-terminals may appear in more contexts than strictly necessary from a semantic point
     270// of view.  Unfortunately, these extra rules are necessary to prevent parsing conflicts -- the parser may not have
     271// enough context and look-ahead information to decide whether a new scope is necessary, so the effect of these extra
     272// rules is to open a new scope unconditionally.  As the grammar evolves, it may be neccesary to add or move around
     273// "push" and "pop" nonterminals to resolve conflicts of this sort.
    279274
    280275push:
    … …  
    290285        ;
    291286
    292 /************************* CONSTANTS ********************************/
     287//************************* CONSTANTS ********************************
    293288
    294289constant:
    295                 /* ENUMERATIONconstant is not included here; it is treated as a variable with type
    296                    "enumeration constant". */
     290                // ENUMERATIONconstant is not included here; it is treated as a variable with type "enumeration
     291                // constant".
    297292        INTEGERconstant                                 { $$ = new ConstantNode(ConstantNode::Integer,   $1); }
    298293        | FLOATINGconstant                              { $$ = new ConstantNode(ConstantNode::Float,     $1); }
    … …  
    302297identifier:
    303298        IDENTIFIER
    304         | ATTR_IDENTIFIER                               /* CFA */
    305         | zero_one                                      /* CFA */
     299        | ATTR_IDENTIFIER                               // CFA
     300        | zero_one                                      // CFA
    306301        ;
    307302
    308303no_01_identifier:
    309304        IDENTIFIER
    310         | ATTR_IDENTIFIER                               /* CFA */
     305        | ATTR_IDENTIFIER                               // CFA
    311306        ;
    312307
    … …  
    315310        ;
    316311
    317 zero_one:                                               /* CFA */
     312zero_one:                                               // CFA
    318313        ZERO
    319314        | ONE
    320315        ;
    321316
    322 string_literal_list:                                    /* juxtaposed strings are concatenated */
     317string_literal_list:                                    // juxtaposed strings are concatenated
    323318        STRINGliteral                                   { $$ = new ConstantNode(ConstantNode::String, $1); }
    324319        | string_literal_list STRINGliteral             { $$ = $1->append( $2 ); }
    325320        ;
    326321
    327 /************************* EXPRESSIONS ********************************/
     322//************************* EXPRESSIONS ********************************
    328323
    329324primary_expression:
    330         IDENTIFIER                                      /* typedef name cannot be used as a variable name */
     325        IDENTIFIER                                      // typedef name cannot be used as a variable name
    331326                { $$ = new VarRefNode($1); }
    332327        | zero_one
    … …  
    338333        | '(' comma_expression ')'
    339334                { $$ = $2; }
    340         | '(' compound_statement ')'                    /* GCC, lambda expression */
     335        | '(' compound_statement ')'                    // GCC, lambda expression
    341336                { $$ = new ValofExprNode($2); }
    342337        ;
    … …  
    345340        primary_expression
    346341        | postfix_expression '[' push assignment_expression pop ']'
    347                  /* CFA, comma_expression disallowed in the context because it results in a commom user error:
    348                     subscripting a matrix with x[i,j] instead of x[i][j]. While this change is not backwards
    349                     compatible, there seems to be little advantage to this feature and many disadvantages. It
    350                     is possible to write x[(i,j)] in CFA, which is equivalent to the old x[i,j]. */
     342                // CFA, comma_expression disallowed in the context because it results in a commom user error:
     343                // subscripting a matrix with x[i,j] instead of x[i][j]. While this change is not backwards
     344                // compatible, there seems to be little advantage to this feature and many disadvantages. It is
     345                // possible to write x[(i,j)] in CFA, which is equivalent to the old x[i,j].
    351346                { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Index), $1, $4); }
    352347        | postfix_expression '(' argument_expression_list ')'
    … …  
    354349        | postfix_expression '.' no_attr_identifier
    355350                { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::FieldSel), $1, new VarRefNode($3)); }
    356         | postfix_expression '.' '[' push field_list pop ']' /* CFA, tuple field selector */
     351        | postfix_expression '.' '[' push field_list pop ']' // CFA, tuple field selector
    357352        | postfix_expression ARROW no_attr_identifier
    358353                { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::PFieldSel), $1, new VarRefNode($3)); }
    359         | postfix_expression ARROW '[' push field_list pop ']' /* CFA, tuple field selector */
     354        | postfix_expression ARROW '[' push field_list pop ']' // CFA, tuple field selector
    360355        | postfix_expression ICR
    361356                { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::IncrPost), $1); }
    362357        | postfix_expression DECR
    363358                { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::DecrPost), $1); }
    364                 /* GCC has priority: cast_expression */
    365         | '(' type_name_no_function ')' '{' initializer_list comma_opt '}' /* C99 */
     359                // GCC has priority: cast_expression
     360        | '(' type_name_no_function ')' '{' initializer_list comma_opt '}' // C99
    366361                { $$ = 0; }
    367362        ;
    … …  
    374369
    375370argument_expression:
    376         /* empty */                                     /* use default argument */
    377                 { $$ = 0; }
     371        // empty
     372                { $$ = 0; }                             // use default argument
    378373        | assignment_expression
    379374        | no_attr_identifier ':' assignment_expression
    380375                                                        { $$ = $3->set_asArgName($1); }
    381                 /* Only a list of no_attr_identifier_or_typedef_name is allowed in this context. However, there
    382                    is insufficient look ahead to distinguish between this list of parameter names and a tuple,
    383                    so the tuple form must be used with an appropriate semantic check. */
     376                // Only a list of no_attr_identifier_or_typedef_name is allowed in this context. However, there is
     377                // insufficient look ahead to distinguish between this list of parameter names and a tuple, so the
     378                // tuple form must be used with an appropriate semantic check.
    384379        | '[' push assignment_expression pop ']' ':' assignment_expression
    385                                                 { $$ = $7->set_asArgName($3); }
     380                                                        { $$ = $7->set_asArgName($3); }
    386381        | '[' push assignment_expression ',' tuple_expression_list pop ']' ':' assignment_expression
    387                                                 { $$ = $9->set_asArgName(new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)$3->set_link( flattenCommas( $5 )))); }
    388         ;
    389 
    390 field_list:                                             /* CFA, tuple field selector */
     382                                                        { $$ = $9->set_asArgName(new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ), (ExpressionNode *)$3->set_link( flattenCommas( $5 )))); }
     383        ;
     384
     385field_list:                                             // CFA, tuple field selector
    391386        field
    392387        | field_list ',' field                          { $$ = (ExpressionNode *)$1->set_link( $3 ); }
    393388        ;
    394389
    395 field:                                                  /* CFA, tuple field selector */
     390field:                                                  // CFA, tuple field selector
    396391        no_attr_identifier
    397392                                                        { $$ = new VarRefNode( $1 ); }
    … …  
    412407        | DECR unary_expression
    413408                { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Decr), $2); }
    414         | EXTENSION cast_expression                     /* GCC */
     409        | EXTENSION cast_expression                     // GCC
    415410                { $$ = $2; }
    416411        | unary_operator cast_expression
    … …  
    418413        | '!' cast_expression
    419414                { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Neg), $2); }
    420         | '*' cast_expression                           /* CFA */
     415        | '*' cast_expression                           // CFA
    421416                { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::PointTo), $2); }
    422                 /* '*' is is separated from unary_operator because of shift/reduce conflict in:
    423                         { * X; } // dereference X
    424                         { * int X; } // CFA declaration of pointer to int
    425                    '&' must be moved here if C++ reference variables are supported. */
     417                // '*' is is separated from unary_operator because of shift/reduce conflict in:
     418                //      { * X; } // dereference X
     419                //      { * int X; } // CFA declaration of pointer to int
     420                // '&' must be moved here if C++ reference variables are supported.
    426421        | SIZEOF unary_expression
    427422                { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::SizeOf), $2); }
    … …  
    434429        | ATTR_IDENTIFIER '(' argument_expression ')'
    435430                { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Attr), new VarRefNode($1), $3); }
    436         | ALIGNOF unary_expression                      /* GCC, variable alignment */
     431        | ALIGNOF unary_expression                      // GCC, variable alignment
    437432                { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::AlignOf), $2); }
    438         | ALIGNOF '(' type_name_no_function ')'         /* GCC, type alignment */
     433        | ALIGNOF '(' type_name_no_function ')'         // GCC, type alignment
    439434                { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::AlignOf), new TypeValueNode($3)); }
    440         | ANDAND no_attr_identifier                     /* GCC, address of label */
     435        | ANDAND no_attr_identifier                     // GCC, address of label
    441436                { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::LabelAddress), new VarRefNode($2, true)); }
    442437        ;
    … …  
    538533                                                { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Cond),
    539534                                                                       (ExpressionNode *)mkList((*$1,*$3,*$5))); }
    540         | logical_OR_expression '?' /* empty */ ':' conditional_expression /* GCC, omitted first operand */
     535        | logical_OR_expression '?' /* empty */ ':' conditional_expression // GCC, omitted first operand
    541536                                                { $$=new CompositeExprNode(new OperatorNode(OperatorNode::NCond),$1,$4); }
    542         | logical_OR_expression '?' comma_expression ':' tuple /* CFA, tuple expression */
     537        | logical_OR_expression '?' comma_expression ':' tuple // CFA, tuple expression
    543538                                                { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Cond),
    544539                                                                       (ExpressionNode *)mkList(( *$1, *$3, *$5 ))); }
    … …  
    550545
    551546assignment_expression:
    552                 /* CFA, assignment is separated from assignment_operator to ensure no assignment operations
    553                    for tuples */
     547                // CFA, assignment is separated from assignment_operator to ensure no assignment operations for tuples
    554548        conditional_expression
    555549        | unary_expression '=' assignment_expression
    … …  
    557551        | unary_expression assignment_operator assignment_expression
    558552                                                        { $$ =new CompositeExprNode($2, $1, $3); }
    559         | tuple assignment_opt                          /* CFA, tuple expression */
     553        | tuple assignment_opt                          // CFA, tuple expression
    560554                {
    561555                  if ( $2 == 0 ) {
    … …  
    568562
    569563assignment_expression_opt:
    570         /* empty */
     564        // empty
    571565                { $$ = new NullExprNode; }
    572566        | assignment_expression
    573567        ;
    574568
    575 tuple:                                                  /* CFA, tuple */
    576                 /* CFA, one assignment_expression is factored out of comma_expression to eliminate a
    577                    shift/reduce conflict with comma_expression in new_identifier_parameter_array and
    578                    new_abstract_array */
     569tuple:                                                  // CFA, tuple
     570                // CFA, one assignment_expression is factored out of comma_expression to eliminate a shift/reduce
     571                // conflict with comma_expression in new_identifier_parameter_array and new_abstract_array
    579572        '[' push pop ']'
    580573                { $$ = new CompositeExprNode( new OperatorNode( OperatorNode::TupleC ) ); }
    … …  
    608601comma_expression:
    609602        assignment_expression
    610         | comma_expression ',' assignment_expression    /* { $$ = (ExpressionNode *)$1->add_to_list($3); } */
     603        | comma_expression ',' assignment_expression    // { $$ = (ExpressionNode *)$1->add_to_list($3); }
    611604                               { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Comma),$1,$3); }
    612605        ;
    613606
    614607comma_expression_opt:
    615         /* empty */                                     { $$ = 0; }
     608        // empty
     609                { $$ = 0; }
    616610        | comma_expression
    617611        ;
    618612
    619 /*************************** STATEMENTS *******************************/
     613//*************************** STATEMENTS *******************************
    620614
    621615statement:
    … …  
    639633                { $$ = new CompoundStmtNode( (StatementNode *)0 ); }
    640634        | '{'
    641                 /* Two scopes are necessary because the block itself has a scope, but every declaration within
    642                    the block also requires its own scope */
     635                // Two scopes are necessary because the block itself has a scope, but every declaration within the block
     636                // also requires its own scope
    643637          push push
    644           label_declaration_opt                         /* GCC, local labels */
    645           block_item_list pop '}'                       /* C99, intermix declarations and statements */
     638          label_declaration_opt                         // GCC, local labels
     639          block_item_list pop '}'                       // C99, intermix declarations and statements
    646640                { $$ = new CompoundStmtNode( $5 ); }
    647641        ;
    648642
    649 block_item_list:                                        /* C99 */
     643block_item_list:                                        // C99
    650644        block_item
    651645        | block_item_list push block_item
    … …  
    654648
    655649block_item:
    656         declaration                                     /* CFA, new & old style declarations */
     650        declaration                                     // CFA, new & old style declarations
    657651                { $$ = new StatementNode( $1 ); }
    658         | EXTENSION declaration                         /* GCC */
     652        | EXTENSION declaration                         // GCC
    659653                { $$ = new StatementNode( $2 ); }
    660654        | statement pop
    … …  
    674668selection_statement:
    675669        IF '(' comma_expression ')' statement           %prec THEN
    676                 /* explicitly deal with the shift/reduce conflict on if/else */
     670                // explicitly deal with the shift/reduce conflict on if/else
    677671                { $$ = new StatementNode(StatementNode::If, $3, $5); }
    678672        | IF '(' comma_expression ')' statement ELSE statement
    679673                { $$ = new StatementNode(StatementNode::If, $3, (StatementNode *)mkList((*$5, *$7)) ); }
    680         | SWITCH '(' comma_expression ')' case_clause   /* CFA */
     674        | SWITCH '(' comma_expression ')' case_clause   // CFA
    681675                { $$ = new StatementNode(StatementNode::Switch, $3, $5); }
    682         | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt '}' /* CFA */
     676        | SWITCH '(' comma_expression ')' '{' push declaration_list_opt switch_clause_list_opt '}' // CFA
    683677                { $$ = new StatementNode(StatementNode::Switch, $3, $8); /* xxx */ }
    684                 /* The semantics of the declaration list is changed to include any associated initialization,
    685                    which is performed *before* the transfer to the appropriate case clause.  Statements after
    686                    the initial declaration list can never be executed, and therefore, are removed from the
    687                    grammar even though C allows it. */
    688         | CHOOSE '(' comma_expression ')' case_clause   /* CFA */
     678                // The semantics of the declaration list is changed to include any associated initialization, which is
     679                // performed *before* the transfer to the appropriate case clause.  Statements after the initial
     680                // declaration list can never be executed, and therefore, are removed from the grammar even though C
     681                // allows it.
     682        | CHOOSE '(' comma_expression ')' case_clause   // CFA
    689683                { $$ = new StatementNode(StatementNode::Choose, $3, $5); }
    690         | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt choose_clause_list_opt '}' /* CFA */
     684        | CHOOSE '(' comma_expression ')' '{' push declaration_list_opt choose_clause_list_opt '}' // CFA
    691685                { $$ = new StatementNode(StatementNode::Choose, $3, $8); }
    692686        ;
    693687
    694 /* CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a
    695    case clause allows a list of values and subranges. */
    696 
    697 case_value:                                             /* CFA */
     688// CASE and DEFAULT clauses are only allowed in the SWITCH statement, precluding Duff's device. In addition, a case
     689// clause allows a list of values and subranges.
     690
     691case_value:                                             // CFA
    698692        constant_expression                     { $$ = $1; }
    699         | constant_expression ELLIPSIS constant_expression /* GCC, subrange */
     693        | constant_expression ELLIPSIS constant_expression // GCC, subrange
    700694                { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Range),$1,$3); }
    701         | subrange                                      /* CFA, subrange */
    702         ;
    703 
    704 case_value_list:                                        /* CFA */
     695        | subrange                                      // CFA, subrange
     696        ;
     697
     698case_value_list:                                        // CFA
    705699        case_value
    706700        | case_value_list ',' case_value
    … …  
    708702        ;
    709703
    710 case_label:                                             /* CFA */
     704case_label:                                             // CFA
    711705        CASE case_value_list ':'                {  $$ = new StatementNode(StatementNode::Case, $2, 0); }
    712706        | DEFAULT ':'                           {  $$ = new StatementNode(StatementNode::Default);     }
    713                 /* A semantic check is required to ensure only one default clause per switch/choose
    714                    statement. */
    715         ;
    716 
    717 case_label_list:                                        /* CFA */
     707                // A semantic check is required to ensure only one default clause per switch/choose statement.
     708        ;
     709
     710case_label_list:                                        // CFA
    718711        case_label
    719712        | case_label_list case_label            { $$ = (StatementNode *)($1->set_link($2)); }
    720713        ;
    721714
    722 case_clause:                                            /* CFA */
     715case_clause:                                            // CFA
    723716        case_label_list statement               {  $$ = $1->append_last_case($2); }
    724717        ;
    725718
    726 switch_clause_list_opt:                                 /* CFA */
    727         /* empty */                             { $$ = 0; }
     719switch_clause_list_opt:                                 // CFA
     720        // empty
     721                { $$ = 0; }
    728722        | switch_clause_list
    729723        ;
    730724
    731 switch_clause_list:                                     /* CFA */
     725switch_clause_list:                                     // CFA
    732726        case_label_list statement_list
    733727                                                { $$ = $1->append_last_case($2); }
    … …  
    736730        ;
    737731
    738 choose_clause_list_opt:                                 /* CFA */
    739         /* empty */                             { $$ = 0; }
     732choose_clause_list_opt:                                 // CFA
     733        // empty
     734                { $$ = 0; }
    740735        | choose_clause_list
    741736        ;
    742737
    743 choose_clause_list:                                     /* CFA */
     738choose_clause_list:                                     // CFA
    744739        case_label_list fall_through
    745                   { $$ = $1->append_last_case($2); }
     740                { $$ = $1->append_last_case($2); }
    746741        | case_label_list statement_list fall_through_opt
    747                   { $$ = $1->append_last_case((StatementNode *)mkList((*$2,*$3))); }
     742                { $$ = $1->append_last_case((StatementNode *)mkList((*$2,*$3))); }
    748743        | choose_clause_list case_label_list fall_through
    749                   { $$ = (StatementNode *)($1->set_link($2->append_last_case($3))); }
     744                { $$ = (StatementNode *)($1->set_link($2->append_last_case($3))); }
    750745        | choose_clause_list case_label_list statement_list fall_through_opt
    751                   { $$ = (StatementNode *)($1->set_link($2->append_last_case((StatementNode *)mkList((*$3,*$4))))); }
    752         ;
    753 
    754 fall_through_opt:                                       /* CFA */
    755         /* empty */                             { $$ = 0; }
     746                { $$ = (StatementNode *)($1->set_link($2->append_last_case((StatementNode *)mkList((*$3,*$4))))); }
     747        ;
     748
     749fall_through_opt:                                       // CFA
     750        // empty
     751                { $$ = 0; }
    756752        | fall_through
    757753        ;
    758754
    759 fall_through:                                           /* CFA */
     755fall_through:                                           // CFA
    760756        FALLTHRU                                { $$ = new StatementNode(StatementNode::Fallthru, 0, 0); }
    761757        | FALLTHRU ';'                          { $$ = new StatementNode(StatementNode::Fallthru, 0, 0); }
    … …  
    774770        comma_expression_opt pop ';' comma_expression_opt ';' comma_expression_opt
    775771                                                { $$ = new ForCtlExprNode($1, $4, $6); }
    776         | declaration comma_expression_opt ';' comma_expression_opt /* C99 */
    777                 /* Like C++, the loop index can be declared local to the loop. */
     772        | declaration comma_expression_opt ';' comma_expression_opt // C99
     773                // Like C++, the loop index can be declared local to the loop.
    778774                                                { $$ = new ForCtlExprNode($1, $2, $4); }
    779775        ;
    … …  
    782778        GOTO no_attr_identifier ';'
    783779                                                { $$ = new StatementNode(StatementNode::Goto, $2); }
    784         | GOTO '*' comma_expression ';'         /* GCC, computed goto */
    785                 /* The syntax for the GCC computed goto violates normal expression precedence, e.g.,
    786                    goto *i+3; => goto *(i+3); whereas normal operator precedence yields goto (*i)+3; */
     780        | GOTO '*' comma_expression ';'         // GCC, computed goto
     781                // The syntax for the GCC computed goto violates normal expression precedence, e.g., goto *i+3; =>
     782                // goto *(i+3); whereas normal operator precedence yields goto (*i)+3;
    787783                                                { $$ = new StatementNode(StatementNode::Goto, $3); }
    788784        | CONTINUE ';'
    789                 /* A semantic check is required to ensure this statement appears only in the body of an
    790                    iteration statement. */
     785                // A semantic check is required to ensure this statement appears only in the body of an iteration
     786                // statement.
    791787                                                { $$ = new StatementNode(StatementNode::Continue, 0, 0); }
    792         | CONTINUE no_attr_identifier ';'       /* CFA, multi-level continue */
    793                 /* A semantic check is required to ensure this statement appears only in the body of an
    794                    iteration statement, and the target of the transfer appears only at the start of an
    795                    iteration statement. */
     788        | CONTINUE no_attr_identifier ';'       // CFA, multi-level continue
     789                // A semantic check is required to ensure this statement appears only in the body of an iteration
     790                // statement, and the target of the transfer appears only at the start of an iteration statement.
    796791                                                { $$ = new StatementNode(StatementNode::Continue, $2); }
    797792        | BREAK ';'
    798                 /* A semantic check is required to ensure this statement appears only in the body of an
    799                    iteration statement. */
     793                // A semantic check is required to ensure this statement appears only in the body of an iteration
     794                // statement.
    800795                                                { $$ = new StatementNode(StatementNode::Break, 0, 0); }
    801         | BREAK no_attr_identifier ';'  /* CFA, multi-level exit */
    802                 /* A semantic check is required to ensure this statement appears only in the body of an
    803                    iteration statement, and the target of the transfer appears only at the start of an
    804                    iteration statement. */
     796        | BREAK no_attr_identifier ';'          // CFA, multi-level exit
     797                // A semantic check is required to ensure this statement appears only in the body of an iteration
     798                // statement, and the target of the transfer appears only at the start of an iteration statement.
    805799                                                { $$ = new StatementNode(StatementNode::Break, $2 ); }
    806800        | RETURN comma_expression_opt ';'
    … …  
    825819
    826820handler_list:
    827                 /* There must be at least one catch clause */
     821                // There must be at least one catch clause
    828822        handler_clause
    829                 /* ISO/IEC 9899:1999 Section 15.3(6) If present, a "..." handler shall be the last handler for
    830                    its try block. */
     823                // ISO/IEC 9899:1999 Section 15.3(6) If present, a "..." handler shall be the last handler for its try
     824                // block.
    831825        | CATCH '(' ELLIPSIS ')' compound_statement
    832826                                                { $$ = StatementNode::newCatchStmt( 0, $5, true ); }
    … …  
    850844
    851845exception_declaration:
    852                 /* A semantic check is required to ensure type_specifier does not create a new type, e.g.:
    853 
    854                         catch ( struct { int i; } x ) ...
    855 
    856                    This new type cannot catch any thrown type because of name equivalence among types. */
     846                // A semantic check is required to ensure type_specifier does not create a new type, e.g.:
     847                //
     848                //      catch ( struct { int i; } x ) ...
     849                //
     850                // This new type cannot catch any thrown type because of name equivalence among types.
    857851        type_specifier
    858852        | type_specifier declarator
    … …  
    863857        | type_specifier variable_abstract_declarator
    864858                {   $$ = $2->addType( $1 ); }
    865         | new_abstract_declarator_tuple no_attr_identifier /* CFA */
     859        | new_abstract_declarator_tuple no_attr_identifier // CFA
    866860                {
    867861                    typedefTable.addToEnclosingScope( TypedefTable::ID );
    868862                    $$ = $1->addName( $2 );
    869863                }
    870         | new_abstract_declarator_tuple                 /* CFA */
     864        | new_abstract_declarator_tuple                 // CFA
    871865        ;
    872866
    … …  
    874868        ASM type_qualifier_list_opt '(' constant_expression ')' ';'
    875869                                                { $$ = new StatementNode(StatementNode::Asm, 0, 0); }
    876         | ASM type_qualifier_list_opt '(' constant_expression ':' asm_operands_opt ')' ';' /* remaining GCC */
     870        | ASM type_qualifier_list_opt '(' constant_expression ':' asm_operands_opt ')' ';' // remaining GCC
    877871                                                { $$ = new StatementNode(StatementNode::Asm, 0, 0); }
    878872        | ASM type_qualifier_list_opt '(' constant_expression ':' asm_operands_opt ':' asm_operands_opt ')' ';'
    … …  
    883877        ;
    884878
    885 asm_operands_opt:                                       /* GCC */
    886         /* empty */
     879asm_operands_opt:                                       // GCC
     880        // empty
    887881        | asm_operands_list
    888882        ;
    889883
    890 asm_operands_list:                                      /* GCC */
     884asm_operands_list:                                      // GCC
    891885        asm_operand
    892886        | asm_operands_list ',' asm_operand
    893887        ;
    894888
    895 asm_operand:                                            /* GCC */
     889asm_operand:                                            // GCC
    896890        STRINGliteral '(' constant_expression ')'       {}
    897891        ;
    898892
    899 asm_clobbers_list:                                      /* GCC */
     893asm_clobbers_list:                                      // GCC
    900894        STRINGliteral                           {}
    901895        | asm_clobbers_list ',' STRINGliteral
    902896        ;
    903897
    904 /******************************* DECLARATIONS *********************************/
    905 
    906 declaration_list_opt:                                   /* used at beginning of switch statement */
     898//******************************* DECLARATIONS *********************************
     899
     900declaration_list_opt:                                   // used at beginning of switch statement
    907901        pop
    908902                { $$ = 0; }
    … …  
    916910        ;
    917911
    918 old_declaration_list_opt:                               /* used to declare parameter types in K&R style functions */
     912old_declaration_list_opt:                               // used to declare parameter types in K&R style functions
    919913        pop
    920914                { $$ = 0; }
    … …  
    928922        ;
    929923
    930 label_declaration_opt:                                  /* GCC, local label */
    931         /* empty */
     924label_declaration_opt:                                  // GCC, local label
     925        // empty
    932926        | label_declaration_list
    933927        ;
    934928
    935 label_declaration_list:                                 /* GCC, local label */
     929label_declaration_list:                                 // GCC, local label
    936930        LABEL label_list ';'
    937931        | label_declaration_list LABEL label_list ';'
    938932        ;
    939933
    940 label_list:                                             /* GCC, local label */
     934label_list:                                             // GCC, local label
    941935        no_attr_identifier_or_typedef_name              {}
    942936        | label_list ',' no_attr_identifier_or_typedef_name {}
    943937        ;
    944938
    945 declaration:                                            /* CFA, new & old style declarations */
     939declaration:                                            // CFA, new & old style declarations
    946940        new_declaration
    947941        | old_declaration
    948942        ;
    949943
    950 /* C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and
    951    function declarations. CFA declarations use the same declaration tokens as in C; however, CFA places
    952    declaration modifiers to the left of the base type, while C declarations place modifiers to the right of
    953    the base type. CFA declaration modifiers are interpreted from left to right and the entire type
    954    specification is distributed across all variables in the declaration list (as in Pascal).  ANSI C and the
    955    new CFA declarations may appear together in the same program block, but cannot be mixed within a specific
    956    declaration.
    957 
    958             CFA             C
    959         [10] int x;     int x[10];      // array of 10 integers
    960         [10] * char y;  char *y[10];    // array of 10 pointers to char
    961    */
    962 
    963 new_declaration:                                        /* CFA */
     944// C declaration syntax is notoriously confusing and error prone. Cforall provides its own type, variable and function
     945// declarations. CFA declarations use the same declaration tokens as in C; however, CFA places declaration modifiers to
     946// the left of the base type, while C declarations place modifiers to the right of the base type. CFA declaration
     947// modifiers are interpreted from left to right and the entire type specification is distributed across all variables in
     948// the declaration list (as in Pascal).  ANSI C and the new CFA declarations may appear together in the same program
     949// block, but cannot be mixed within a specific declaration.
     950//
     951//          CFA             C
     952//      [10] int x;     int x[10];      // array of 10 integers
     953//      [10] * char y;  char *y[10];    // array of 10 pointers to char
     954
     955new_declaration:                                        // CFA
    964956        new_variable_declaration pop ';'
    965957        | new_typedef_declaration pop ';'
    … …  
    969961        ;
    970962
    971 new_variable_declaration:                               /* CFA */
     963new_variable_declaration:                               // CFA
    972964        new_variable_specifier initializer_opt
    973965                {
    974                         typedefTable.addToEnclosingScope( TypedefTable::ID);
     966                        typedefTable.addToEnclosingScope( TypedefTable::ID );
    975967                        $$ = $1;
    976968                }
    977969        | declaration_qualifier_list new_variable_specifier initializer_opt
    978                 /* declaration_qualifier_list also includes type_qualifier_list, so a semantic check is
    979                    necessary to preclude them as a type_qualifier cannot appear in that context. */
    980                 {
    981                         typedefTable.addToEnclosingScope( TypedefTable::ID);
     970                // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to
     971                // preclude them as a type_qualifier cannot appear in that context.
     972                {
     973                        typedefTable.addToEnclosingScope( TypedefTable::ID );
    982974                        $$ = $2->addQualifiers( $1 );
    983975                }
    984976        | new_variable_declaration pop ',' push identifier_or_typedef_name initializer_opt
    985977                {
    986                         typedefTable.addToEnclosingScope( *$5, TypedefTable::ID);
     978                        typedefTable.addToEnclosingScope( *$5, TypedefTable::ID );
    987979                        $$ = $1->appendList( $1->cloneType( $5 ) );
    988980                }
    989981        ;
    990982
    991 new_variable_specifier:                                 /* CFA */
    992                 /* A semantic check is required to ensure asm_name only appears on declarations with implicit
    993                    or explicit static storage-class */
     983new_variable_specifier:                                 // CFA
     984                // A semantic check is required to ensure asm_name only appears on declarations with implicit or
     985                // explicit static storage-class
    994986        new_abstract_declarator_no_tuple identifier_or_typedef_name asm_name_opt
    995987                {
    … …  
    10091001        ;
    10101002
    1011 new_function_declaration:                               /* CFA */
     1003new_function_declaration:                               // CFA
    10121004        new_function_specifier
    10131005                {
    1014                         typedefTable.addToEnclosingScope( TypedefTable::ID);
     1006                        typedefTable.addToEnclosingScope( TypedefTable::ID );
    10151007                        $$ = $1;
    10161008                }
    10171009        | declaration_qualifier_list new_function_specifier
    1018                 /* declaration_qualifier_list also includes type_qualifier_list, so a semantic check is
    1019                    necessary to preclude them as a type_qualifier cannot appear in this context. */
    1020                 {
    1021                         typedefTable.addToEnclosingScope( TypedefTable::ID);
     1010                // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is necessary to
     1011                // preclude them as a type_qualifier cannot appear in this context.
     1012                {
     1013                        typedefTable.addToEnclosingScope( TypedefTable::ID );
    10221014                        $$ = $2->addQualifiers( $1 );
    10231015                }
    10241016        | new_function_declaration pop ',' push identifier_or_typedef_name
    10251017                {
    1026                         typedefTable.addToEnclosingScope( *$5, TypedefTable::ID);
     1018                        typedefTable.addToEnclosingScope( *$5, TypedefTable::ID );
    10271019                        $$ = $1->appendList( $1->cloneType( $5 ) );
    10281020                }
    10291021        ;
    10301022
    1031 new_function_specifier:                                 /* CFA */
     1023new_function_specifier:                                 // CFA
    10321024        '[' push pop ']' identifier '(' push new_parameter_type_list_opt pop ')'
    10331025                {
    … …  
    10601052        ;
    10611053
    1062 new_function_return:                                    /* CFA */
     1054new_function_return:                                    // CFA
    10631055        '[' push new_parameter_list pop ']'
    10641056                { $$ = DeclarationNode::newTuple( $3 ); }
    … …  
    10691061        ;
    10701062
    1071 new_typedef_declaration:                                /* CFA */
     1063new_typedef_declaration:                                // CFA
    10721064        TYPEDEF new_variable_specifier
    10731065                {
    … …  
    11021094                        $$ = $1->appendList( $1->cloneBaseType( $5 )->addTypedef() );
    11031095                }
    1104         | type_qualifier_list TYPEDEF type_specifier declarator /* remaining OBSOLESCENT (see 2) */
     1096        | type_qualifier_list TYPEDEF type_specifier declarator // remaining OBSOLESCENT (see 2)
    11051097                {
    11061098                        typedefTable.addToEnclosingScope( TypedefTable::TD);
    … …  
    11191111        ;
    11201112
    1121 typedef_expression:                                     /* GCC, naming expression type */
     1113typedef_expression:                                     // GCC, naming expression type
    11221114        TYPEDEF no_attr_identifier '=' assignment_expression
    11231115                {
    … …  
    11351127        declaring_list pop ';'
    11361128        | typedef_declaration pop ';'
    1137         | typedef_expression pop ';'                    /* GCC, naming expression type */
     1129        | typedef_expression pop ';'                    // GCC, naming expression type
    11381130        | sue_declaration_specifier pop ';'
    11391131        ;
    … …  
    11491141        | declaring_list ',' attribute_list_opt declarator asm_name_opt initializer_opt
    11501142                {
    1151                         typedefTable.addToEnclosingScope( TypedefTable::ID);
     1143                        typedefTable.addToEnclosingScope( TypedefTable::ID );
    11521144                        $$ = $1->appendList( $1->cloneBaseType( $4->addInitializer($6) ) );
    11531145                }
    11541146        ;
    11551147
    1156 declaration_specifier:                                  /* type specifier + storage class */
     1148declaration_specifier:                                  // type specifier + storage class
    11571149        basic_declaration_specifier
    11581150        | sue_declaration_specifier
    … …  
    11611153        ;
    11621154
    1163 type_specifier:                                         /* declaration specifier - storage class */
     1155type_specifier:                                         // declaration specifier - storage class
    11641156        basic_type_specifier
    11651157        | sue_type_specifier
    … …  
    11681160        ;
    11691161
    1170 type_qualifier_list_opt:                                /* GCC, used in asm_statement */
    1171         /* empty */
     1162type_qualifier_list_opt:                                // GCC, used in asm_statement
     1163        // empty
    11721164                { $$ = 0; }
    11731165        | type_qualifier_list
    … …  
    11891181        type_qualifier_name
    11901182        | attribute
    1191                 { $$ = DeclarationNode::newQualifier( DeclarationNode::Const ); }
     1183                { $$ = DeclarationNode::newQualifier( DeclarationNode::Attribute ); }
    11921184        ;
    11931185
    … …  
    11991191        | VOLATILE
    12001192                { $$ = DeclarationNode::newQualifier( DeclarationNode::Volatile ); }
    1201         | LVALUE                                        /* CFA */
     1193        | LVALUE                                        // CFA
    12021194                { $$ = DeclarationNode::newQualifier( DeclarationNode::Lvalue ); }
    12031195        | ATOMIC
    12041196                { $$ = DeclarationNode::newQualifier( DeclarationNode::Atomic ); }
    1205         | FORALL '(' 
     1197        | FORALL '('
    12061198                {
    12071199                        typedefTable.enterScope();
    12081200                }
    1209           type_parameter_list ')'                       /* CFA */
     1201          type_parameter_list ')'                       // CFA
    12101202                {
    12111203                        typedefTable.leaveScope();
    … …  
    12161208declaration_qualifier_list:
    12171209        storage_class_list
    1218         | type_qualifier_list storage_class_list        /* remaining OBSOLESCENT (see 2) */
     1210        | type_qualifier_list storage_class_list        // remaining OBSOLESCENT (see 2)
    12191211                { $$ = $1->addQualifiers( $2 ); }
    12201212        | declaration_qualifier_list type_qualifier_list storage_class_list
    … …  
    12391231
    12401232storage_class_name:
    1241         AUTO
     1233        EXTERN
     1234                { $$ = DeclarationNode::newStorageClass( DeclarationNode::Extern ); }
     1235        | STATIC
     1236                { $$ = DeclarationNode::newStorageClass( DeclarationNode::Static ); }
     1237        | AUTO
    12421238                { $$ = DeclarationNode::newStorageClass( DeclarationNode::Auto ); }
    1243         | EXTERN
    1244                 { $$ = DeclarationNode::newStorageClass( DeclarationNode::Extern ); }
    12451239        | REGISTER
    12461240                { $$ = DeclarationNode::newStorageClass( DeclarationNode::Register ); }
    1247         | STATIC
    1248                 { $$ = DeclarationNode::newStorageClass( DeclarationNode::Static ); }
    1249         | INLINE                                        /* C99 */
    1250                 /* INLINE is essentially a storage class specifier for functions, and hence, belongs here. */
     1241        | INLINE                                        // C99
     1242                // INLINE is essentially a storage class specifier for functions, and hence, belongs here.
    12511243                { $$ = DeclarationNode::newStorageClass( DeclarationNode::Inline ); }
    1252         | FORTRAN                                       /* C99 */
     1244        | FORTRAN                                       // C99
    12531245                { $$ = DeclarationNode::newStorageClass( DeclarationNode::Fortran ); }
    12541246        ;
    … …  
    12731265        | VOID
    12741266                { $$ = DeclarationNode::newBasicType( DeclarationNode::Void ); }
    1275         | BOOL                                          /* C99 */
     1267        | BOOL                                          // C99
    12761268                { $$ = DeclarationNode::newBasicType( DeclarationNode::Bool ); }
    1277         | COMPLEX                                       /* C99 */
     1269        | COMPLEX                                       // C99
    12781270                { $$ = DeclarationNode::newBasicType( DeclarationNode::Complex ); }
    1279         | IMAGINARY                                     /* C99 */
     1271        | IMAGINARY                                     // C99
    12801272                { $$ = DeclarationNode::newBasicType( DeclarationNode::Imaginary ); }
    12811273        ;
    12821274
    12831275basic_declaration_specifier:
    1284                 /* A semantic check is necessary for conflicting storage classes. */
     1276                // A semantic check is necessary for conflicting storage classes.
    12851277        basic_type_specifier
    12861278        | declaration_qualifier_list basic_type_specifier
    12871279                { $$ = $2->addQualifiers( $1 ); }
    1288         | basic_declaration_specifier storage_class     /* remaining OBSOLESCENT (see 2) */
     1280        | basic_declaration_specifier storage_class     // remaining OBSOLESCENT (see 2)
    12891281                { $$ = $1->addQualifiers( $2 ); }
    12901282        | basic_declaration_specifier storage_class type_qualifier_list
    … …  
    13011293
    13021294direct_type_name:
    1303                 /* A semantic check is necessary for conflicting type qualifiers. */
     1295                // A semantic check is necessary for conflicting type qualifiers.
    13041296        basic_type_name
    13051297        | type_qualifier_list basic_type_name
    … …  
    13121304
    13131305indirect_type_name:
    1314         TYPEOF '(' type_name ')'                        /* GCC: typeof(x) y; */
     1306        TYPEOF '(' type_name ')'                        // GCC: typeof(x) y;
    13151307                { $$ = $3; }
    1316         | TYPEOF '(' comma_expression ')'               /* GCC: typeof(a+b) y; */
     1308        | TYPEOF '(' comma_expression ')'               // GCC: typeof(a+b) y;
    13171309                { $$ = DeclarationNode::newTypeof( $3 ); }
    1318         | ATTR_TYPEGENname '(' type_name ')'            /* CFA: e.g., @type(x) y; */
     1310        | ATTR_TYPEGENname '(' type_name ')'            // CFA: e.g., @type(x) y;
    13191311                { $$ = DeclarationNode::newAttr( $1, $3 ); }
    1320         | ATTR_TYPEGENname '(' comma_expression ')'     /* CFA: e.g., @type(a+b) y; */
     1312        | ATTR_TYPEGENname '(' comma_expression ')'     // CFA: e.g., @type(a+b) y;
    13211313                { $$ = DeclarationNode::newAttr( $1, $3 ); }
    13221314        ;
    … …  
    13261318        | declaration_qualifier_list sue_type_specifier
    13271319                { $$ = $2->addQualifiers( $1 ); }
    1328         | sue_declaration_specifier storage_class       /* remaining OBSOLESCENT (see 2) */
     1320        | sue_declaration_specifier storage_class       // remaining OBSOLESCENT (see 2)
    13291321                { $$ = $1->addQualifiers( $2 ); }
    13301322        | sue_declaration_specifier storage_class type_qualifier_list
    … …  
    13331325
    13341326sue_type_specifier:
    1335         elaborated_type_name                            /* struct, union, enum */
     1327        elaborated_type_name                            // struct, union, enum
    13361328        | type_qualifier_list elaborated_type_name
    13371329                { $$ = $2->addQualifiers( $1 ); }
    … …  
    13441336        | declaration_qualifier_list typedef_type_specifier
    13451337                { $$ = $2->addQualifiers( $1 ); }
    1346         | typedef_declaration_specifier storage_class   /* remaining OBSOLESCENT (see 2) */
     1338        | typedef_declaration_specifier storage_class   // remaining OBSOLESCENT (see 2)
    13471339                { $$ = $1->addQualifiers( $2 ); }
    13481340        | typedef_declaration_specifier storage_class type_qualifier_list
    … …  
    13501342        ;
    13511343
    1352 typedef_type_specifier:                                 /* typedef types */
     1344typedef_type_specifier:                                 // typedef types
    13531345        TYPEDEFname
    13541346                { $$ = DeclarationNode::newFromTypedef( $1 ); }
    … …  
    13711363        | aggregate_key no_attr_identifier_or_typedef_name '{' field_declaration_list '}'
    13721364                { $$ = DeclarationNode::newAggregate( $1, $2, 0, 0, $4 ); }
    1373         | aggregate_key '(' push type_parameter_list pop ')' '{' field_declaration_list '}' /* CFA */
     1365        | aggregate_key '(' push type_parameter_list pop ')' '{' field_declaration_list '}' // CFA
    13741366                { $$ = DeclarationNode::newAggregate( $1, 0, $4, 0, $8 ); }
    1375         | aggregate_key '(' push type_parameter_list pop ')' no_attr_identifier_or_typedef_name /* CFA */
     1367        | aggregate_key '(' push type_parameter_list pop ')' no_attr_identifier_or_typedef_name // CFA
    13761368                { $$ = DeclarationNode::newAggregate( $1, $7, $4, 0, 0 ); }
    1377         | aggregate_key '(' push type_parameter_list pop ')' no_attr_identifier_or_typedef_name '{' field_declaration_list '}' /* CFA */
     1369        | aggregate_key '(' push type_parameter_list pop ')' no_attr_identifier_or_typedef_name '{' field_declaration_list '}' // CFA
    13781370                { $$ = DeclarationNode::newAggregate( $1, $7, $4, 0, $9 ); }
    1379         | aggregate_key '(' push type_parameter_list pop ')' '(' type_name_list ')' '{' field_declaration_list '}' /* CFA */
     1371        | aggregate_key '(' push type_parameter_list pop ')' '(' type_name_list ')' '{' field_declaration_list '}' // CFA
    13801372                { $$ = DeclarationNode::newAggregate( $1, 0, $4, $8, $11 ); }
    1381         | aggregate_key '(' push type_name_list pop ')' no_attr_identifier_or_typedef_name /* CFA */
    1382                 /* push and pop are only to prevent S/R conflicts */
     1373        | aggregate_key '(' push type_name_list pop ')' no_attr_identifier_or_typedef_name // CFA
     1374                // push and pop are only to prevent S/R conflicts
    13831375                { $$ = DeclarationNode::newAggregate( $1, $7, 0, $4, 0 ); }
    1384         | aggregate_key '(' push type_parameter_list pop ')' '(' type_name_list ')' no_attr_identifier_or_typedef_name '{' field_declaration_list '}' /* CFA */
     1376        | aggregate_key '(' push type_parameter_list pop ')' '(' type_name_list ')' no_attr_identifier_or_typedef_name '{' field_declaration_list '}' // CFA
    13851377                { $$ = DeclarationNode::newAggregate( $1, $10, $4, $8, $12 ); }
    13861378        ;
    … …  
    14011393
    14021394field_declaration:
    1403         new_field_declaring_list ';'                    /* CFA, new style field declaration */
    1404         | EXTENSION new_field_declaring_list ';'        /* GCC */
     1395        new_field_declaring_list ';'                    // CFA, new style field declaration
     1396        | EXTENSION new_field_declaring_list ';'        // GCC
    14051397                { $$ = $2; }
    14061398        | field_declaring_list ';'
    1407         | EXTENSION field_declaring_list ';'            /* GCC */
    1408                 { $$ = $2; }
    1409         ;
    1410 
    1411 new_field_declaring_list:                               /* CFA, new style field declaration */
    1412         new_abstract_declarator_tuple                   /* CFA, no field name */
     1399        | EXTENSION field_declaring_list ';'            // GCC
     1400                { $$ = $2; }
     1401        ;
     1402
     1403new_field_declaring_list:                               // CFA, new style field declaration
     1404        new_abstract_declarator_tuple                   // CFA, no field name
    14131405        | new_abstract_declarator_tuple no_attr_identifier_or_typedef_name
    14141406                { $$ = $1->addName( $2 ); }
    14151407        | new_field_declaring_list ',' no_attr_identifier_or_typedef_name
    14161408                { $$ = $1->appendList( $1->cloneType( $3 ) ); }
    1417         | new_field_declaring_list ','                  /* CFA, no field name */
     1409        | new_field_declaring_list ','                  // CFA, no field name
    14181410                { $$ = $1->appendList( $1->cloneType( 0 ) ); }
    14191411        ;
    … …  
    14271419
    14281420field_declarator:
    1429         /* empty */                                     /* CFA, no field name */
    1430                 { $$ = DeclarationNode::newName( 0 ); /* XXX */ }
    1431         | bit_subrange_size                             /* no field name */
     1421        // empty
     1422                { $$ = DeclarationNode::newName( 0 ); /* XXX */ } // CFA, no field name
     1423        | bit_subrange_size                             // no field name
    14321424                { $$ = DeclarationNode::newBitfield( $1 ); }
    14331425        | variable_declarator bit_subrange_size_opt
    1434                 /* A semantic check is required to ensure bit_subrange only appears on base type int. */
     1426                // A semantic check is required to ensure bit_subrange only appears on base type int.
    14351427                { $$ = $1->addBitfield( $2 ); }
    14361428        | typedef_redeclarator bit_subrange_size_opt
    1437                 /* A semantic check is required to ensure bit_subrange only appears on base type int. */
     1429                // A semantic check is required to ensure bit_subrange only appears on base type int.
    14381430                { $$ = $1->addBitfield( $2 ); }
    1439         | variable_abstract_declarator                  /* CFA, no field name */
     1431        | variable_abstract_declarator                  // CFA, no field name
    14401432        ;
    14411433
    14421434bit_subrange_size_opt:
    1443         /* empty */
     1435        // empty
    14441436                { $$ = 0; }
    14451437        | bit_subrange_size
    … …  
    14731465
    14741466enumerator_value_opt:
    1475         /* empty */
     1467        // empty
    14761468                { $$ = 0; }
    14771469        | '=' constant_expression
    … …  
    14791471        ;
    14801472
    1481 /* Minimum of one parameter after which ellipsis is allowed only at the end. */
    1482 
    1483 new_parameter_type_list_opt:                            /* CFA */
    1484         /* empty */
     1473// Minimum of one parameter after which ellipsis is allowed only at the end.
     1474
     1475new_parameter_type_list_opt:                            // CFA
     1476        // empty
    14851477                { $$ = 0; }
    14861478        | new_parameter_type_list
    14871479        ;
    14881480
    1489 new_parameter_type_list:                                /* CFA, abstract + real */
     1481new_parameter_type_list:                                // CFA, abstract + real
    14901482        new_abstract_parameter_list
    14911483        | new_parameter_list
    … …  
    14981490        ;
    14991491
    1500 new_parameter_list:                                     /* CFA */
    1501                 /* To obtain LR(1) between new_parameter_list and new_abstract_tuple, the last
    1502                   new_abstract_parameter_list is factored out from new_parameter_list, flattening the rules
    1503                    to get lookahead to the ']'. */
     1492new_parameter_list:                                     // CFA
     1493                // To obtain LR(1) between new_parameter_list and new_abstract_tuple, the last
     1494                // new_abstract_parameter_list is factored out from new_parameter_list, flattening the rules
     1495                // to get lookahead to the ']'.
    15041496        new_parameter_declaration
    15051497        | new_abstract_parameter_list pop ',' push new_parameter_declaration
    … …  
    15111503        ;
    15121504
    1513 new_abstract_parameter_list:                            /* CFA, new & old style abstract */
     1505new_abstract_parameter_list:                            // CFA, new & old style abstract
    15141506        new_abstract_parameter_declaration
    15151507        | new_abstract_parameter_list pop ',' push new_abstract_parameter_declaration
    … …  
    15181510
    15191511parameter_type_list_opt:
    1520         /* empty */
     1512        // empty
    15211513                { $$ = 0; }
    15221514        | parameter_type_list
    … …  
    15291521        ;
    15301522
    1531 parameter_list:                                         /* abstract + real */
     1523parameter_list:                                         // abstract + real
    15321524        abstract_parameter_declaration
    15331525        | parameter_declaration
    … …  
    15381530        ;
    15391531
    1540 /* Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different
    1541   semantics for typedef name by using typedef_parameter_redeclarator instead of typedef_redeclarator, and
    1542    function prototypes. */
    1543 
    1544 new_parameter_declaration:                              /* CFA, new & old style parameter declaration */
     1532// Provides optional identifier names (abstract_declarator/variable_declarator), no initialization, different
     1533// semantics for typedef name by using typedef_parameter_redeclarator instead of typedef_redeclarator, and
     1534// function prototypes.
     1535
     1536new_parameter_declaration:                              // CFA, new & old style parameter declaration
    15451537        parameter_declaration
    15461538        | new_identifier_parameter_declarator_no_tuple identifier_or_typedef_name assignment_opt
    15471539                { $$ = $1->addName( $2 ); }
    15481540        | new_abstract_tuple identifier_or_typedef_name assignment_opt
    1549                 /* To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator). */
     1541                // To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator).
    15501542                { $$ = $1->addName( $2 ); }
    15511543        | type_qualifier_list new_abstract_tuple identifier_or_typedef_name assignment_opt
    … …  
    15541546        ;
    15551547
    1556 new_abstract_parameter_declaration:                     /* CFA, new & old style parameter declaration */
     1548new_abstract_parameter_declaration:                     // CFA, new & old style parameter declaration
    15571549        abstract_parameter_declaration
    15581550        | new_identifier_parameter_declarator_no_tuple
    15591551        | new_abstract_tuple
    1560                 /* To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator). */
     1552                // To obtain LR(1), these rules must be duplicated here (see new_abstract_declarator).
    15611553        | type_qualifier_list new_abstract_tuple
    15621554                { $$ = $2->addQualifiers( $1 ); }
    … …  
    15671559        declaration_specifier identifier_parameter_declarator assignment_opt
    15681560                {
    1569                     typedefTable.addToEnclosingScope( TypedefTable::ID);
     1561                    typedefTable.addToEnclosingScope( TypedefTable::ID );
    15701562                    $$ = $2->addType( $1 )->addInitializer( new InitializerNode($3) );
    15711563                }
    15721564        | declaration_specifier typedef_parameter_redeclarator assignment_opt
    15731565                {
    1574                     typedefTable.addToEnclosingScope( TypedefTable::ID);
     1566                    typedefTable.addToEnclosingScope( TypedefTable::ID );
    15751567                    $$ = $2->addType( $1 )->addInitializer( new InitializerNode($3) );
    15761568                }
    … …  
    15831575        ;
    15841576
    1585 /* ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a
    1586   parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is
    1587    based only on identifiers.  The ANSI-style parameter-list can redefine a typedef name. */
    1588 
    1589 identifier_list:                                        /* K&R-style parameter list => no types */
     1577// ISO/IEC 9899:1999 Section 6.9.1(6) : "An identifier declared as a typedef name shall not be redeclared as a
     1578// parameter." Because the scope of the K&R-style parameter-list sees the typedef first, the following is
     1579// based only on identifiers.  The ANSI-style parameter-list can redefine a typedef name.
     1580
     1581identifier_list:                                        // K&R-style parameter list => no types
    15901582        no_attr_identifier
    15911583                { $$ = DeclarationNode::newName( $1 ); }
    … …  
    16121604        ;
    16131605
    1614 type_name_no_function:                                  /* sizeof, alignof, cast (constructor) */
    1615         new_abstract_declarator_tuple                   /* CFA */
     1606type_name_no_function:                                  // sizeof, alignof, cast (constructor)
     1607        new_abstract_declarator_tuple                   // CFA
    16161608        | type_specifier
    16171609        | type_specifier variable_abstract_declarator
    … …  
    16191611        ;
    16201612
    1621 type_name:                                              /* typeof, assertion */
    1622         new_abstract_declarator_tuple                   /* CFA */
    1623         | new_abstract_function                         /* CFA */
     1613type_name:                                              // typeof, assertion
     1614        new_abstract_declarator_tuple                   // CFA
     1615        | new_abstract_function                         // CFA
    16241616        | type_specifier
    16251617        | type_specifier abstract_declarator
    … …  
    16451637        ;
    16461638
    1647 /* There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem
    1648   is use of '=' to separator the designator from the initializer value, as in:
    1649 
    1650         int x[10] = { [1] = 3 };
    1651 
    1652   The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment.  To disambiguate this
    1653   case, CFA changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC
    1654   does uses ":" for field selection. The optional use of the "=" in GCC, or in this case ":", cannot be
    1655    supported either due to shift/reduce conflicts */
     1639// There is an unreconcileable parsing problem between C99 and CFA with respect to designators. The problem
     1640// is use of '=' to separator the designator from the initializer value, as in:
     1641//
     1642//      int x[10] = { [1] = 3 };
     1643//
     1644// The string "[1] = 3" can be parsed as a designator assignment or a tuple assignment.  To disambiguate this
     1645// case, CFA changes the syntax from "=" to ":" as the separator between the designator and initializer. GCC
     1646// does uses ":" for field selection. The optional use of the "=" in GCC, or in this case ":", cannot be
     1647// supported either due to shift/reduce conflicts
    16561648
    16571649designation:
    1658         designator_list ':'                             /* C99, CFA uses ":" instead of "=" */
    1659         | no_attr_identifier_or_typedef_name ':'        /* GCC, field name */
     1650        designator_list ':'                             // C99, CFA uses ":" instead of "="
     1651        | no_attr_identifier_or_typedef_name ':'        // GCC, field name
    16601652                                                        { $$ = new VarRefNode( $1 ); }
    16611653        ;
    16621654
    1663 designator_list:                                        /* C99 */
     1655designator_list:                                        // C99
    16641656        designator
    16651657        | designator_list designator                    { $$ = (ExpressionNode *)($1->set_link( $2 )); }
    … …  
    16671659
    16681660designator:
    1669         '.' no_attr_identifier_or_typedef_name          /* C99, field name */
     1661        '.' no_attr_identifier_or_typedef_name          // C99, field name
    16701662                                                        { $$ = new VarRefNode( $2 ); }
    1671         | '[' push assignment_expression pop ']'        /* C99, single array element */
     1663        | '[' push assignment_expression pop ']'        // C99, single array element
    16721664                /* assignment_expression used instead of constant_expression because of shift/reduce conflicts
    16731665                   with tuple. */
    16741666                                                        { $$ = $3; }
    1675         | '[' push subrange pop ']'                     /* CFA, multiple array elements */
     1667        | '[' push subrange pop ']'                     // CFA, multiple array elements
    16761668                                                        { $$ = $3; }
    1677         | '[' push constant_expression ELLIPSIS constant_expression pop ']' /* GCC, multiple array elements */
     1669        | '[' push constant_expression ELLIPSIS constant_expression pop ']' // GCC, multiple array elements
    16781670                                                        { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Range), $3, $5); }
    1679         | '.' '[' push field_list pop ']'               /* CFA, tuple field selector */
     1671        | '.' '[' push field_list pop ']'               // CFA, tuple field selector
    16801672                                                        { $$ = $4; }
    16811673        ;
    16821674
    1683 /* The CFA type system is based on parametric polymorphism, the ability to declare functions with type
    1684   parameters, rather than an object-oriented type system. This required four groups of extensions:
    1685 
    1686   Overloading: function, data, and operator identifiers may be overloaded.
    1687 
    1688   Type declarations: "type" is used to generate new types for declaring objects. Similarly, "dtype" is used
    1689        for object and incomplete types, and "ftype" is used for function types. Type declarations with
    1690        initializers provide definitions of new types. Type declarations with storage class "extern" provide
    1691        opaque types.
    1692 
    1693   Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at
    1694        the call site. A polymorphic function is not a template; it is a function, with an address and a type.
    1695 
    1696   Specifications and Assertions: Specifications are collections of declarations parameterized by one or more
    1697        types. They serve many of the purposes of abstract classes, and specification hierarchies resemble
    1698        subclass hierarchies. Unlike classes, they can define relationships between types.  Assertions declare
    1699        that a type or types provide the operations declared by a specification.  Assertions are normally used
    1700        to declare requirements on type arguments of polymorphic functions.  */
    1701 
    1702 typegen_declaration_specifier:                          /* CFA */
     1675// The CFA type system is based on parametric polymorphism, the ability to declare functions with type
     1676// parameters, rather than an object-oriented type system. This required four groups of extensions:
     1677//
     1678// Overloading: function, data, and operator identifiers may be overloaded.
     1679//
     1680// Type declarations: "type" is used to generate new types for declaring objects. Similarly, "dtype" is used
     1681//     for object and incomplete types, and "ftype" is used for function types. Type declarations with
     1682//     initializers provide definitions of new types. Type declarations with storage class "extern" provide
     1683//     opaque types.
     1684//
     1685// Polymorphic functions: A forall clause declares a type parameter. The corresponding argument is inferred at
     1686//     the call site. A polymorphic function is not a template; it is a function, with an address and a type.
     1687//
     1688// Specifications and Assertions: Specifications are collections of declarations parameterized by one or more
     1689//     types. They serve many of the purposes of abstract classes, and specification hierarchies resemble
     1690//     subclass hierarchies. Unlike classes, they can define relationships between types.  Assertions declare
     1691//     that a type or types provide the operations declared by a specification.  Assertions are normally used
     1692//     to declare requirements on type arguments of polymorphic functions.
     1693
     1694typegen_declaration_specifier:                          // CFA
    17031695        typegen_type_specifier
    17041696        | declaration_qualifier_list typegen_type_specifier
    17051697                { $$ = $2->addQualifiers( $1 ); }
    1706         | typegen_declaration_specifier storage_class   /* remaining OBSOLESCENT (see 2) */
     1698        | typegen_declaration_specifier storage_class   // remaining OBSOLESCENT (see 2)
    17071699                { $$ = $1->addQualifiers( $2 ); }
    17081700        | typegen_declaration_specifier storage_class type_qualifier_list
    … …  
    17101702        ;
    17111703
    1712 typegen_type_specifier:                                 /* CFA */
     1704typegen_type_specifier:                                 // CFA
    17131705        TYPEGENname '(' type_name_list ')'
    17141706                { $$ = DeclarationNode::newFromTypeGen( $1, $3 ); }
    … …  
    17191711        ;
    17201712
    1721 type_parameter_list:                                    /* CFA */
     1713type_parameter_list:                                    // CFA
    17221714        type_parameter assignment_opt
    17231715        | type_parameter_list ',' type_parameter assignment_opt
    … …  
    17251717        ;
    17261718
    1727 type_parameter:                                         /* CFA */
     1719type_parameter:                                         // CFA
    17281720        type_class no_attr_identifier_or_typedef_name
    17291721                { typedefTable.addToEnclosingScope(*($2), TypedefTable::TD); }
    … …  
    17331725        ;
    17341726
    1735 type_class:                                             /* CFA */
     1727type_class:                                             // CFA
    17361728        TYPE
    17371729                { $$ = DeclarationNode::Type; }
    … …  
    17421734        ;
    17431735
    1744 assertion_list_opt:                                     /* CFA */
    1745         /* empty */
     1736assertion_list_opt:                                     // CFA
     1737        // empty
    17461738                { $$ = 0; }
    17471739        | assertion_list_opt assertion
    … …  
    17491741        ;
    17501742
    1751 assertion:                                              /* CFA */
     1743assertion:                                              // CFA
    17521744        '|' no_attr_identifier_or_typedef_name '(' type_name_list ')'
    17531745                {
    … …  
    17611753        ;
    17621754
    1763 type_name_list:                                         /* CFA */
     1755type_name_list:                                         // CFA
    17641756        type_name
    17651757                { $$ = new TypeValueNode( $1 ); }
    … …  
    17711763        ;
    17721764
    1773 type_declaring_list:                                    /* CFA */
     1765type_declaring_list:                                    // CFA
    17741766        TYPE type_declarator
    17751767                { $$ = $2; }
    … …  
    17801772        ;
    17811773
    1782 type_declarator:                                        /* CFA */
     1774type_declarator:                                        // CFA
    17831775        type_declarator_name assertion_list_opt
    17841776                { $$ = $1->addAssertions( $2 ); }
    … …  
    17871779        ;
    17881780
    1789 type_declarator_name:                                   /* CFA */
     1781type_declarator_name:                                   // CFA
    17901782        no_attr_identifier_or_typedef_name
    17911783                {
    … …  
    18001792        ;
    18011793
    1802 context_specifier:                                      /* CFA */
     1794context_specifier:                                      // CFA
    18031795        CONTEXT no_attr_identifier_or_typedef_name '(' push type_parameter_list pop ')' '{' '}'
    18041796                {
    1805                     typedefTable.addToEnclosingScope(*($2), TypedefTable::ID);
     1797                    typedefTable.addToEnclosingScope(*($2), TypedefTable::ID );
    18061798                    $$ = DeclarationNode::newContext( $2, $5, 0 );
    18071799                }
    … …  
    18141806                {
    18151807                    typedefTable.leaveContext();
    1816                     typedefTable.addToEnclosingScope(*($2), TypedefTable::ID);
     1808                    typedefTable.addToEnclosingScope(*($2), TypedefTable::ID );
    18171809                    $$ = DeclarationNode::newContext( $2, $5, $10 );
    18181810                }
    18191811        ;
    18201812
    1821 context_declaration_list:                               /* CFA */
     1813context_declaration_list:                               // CFA
    18221814        context_declaration
    18231815        | context_declaration_list push context_declaration
    … …  
    18251817        ;
    18261818
    1827 context_declaration:                                    /* CFA */
     1819context_declaration:                                    // CFA
    18281820        new_context_declaring_list pop ';'
    18291821        | context_declaring_list pop ';'
    18301822        ;
    18311823
    1832 new_context_declaring_list:                             /* CFA */
     1824new_context_declaring_list:                             // CFA
    18331825        new_variable_specifier
    18341826                {
    … …  
    18481840        ;
    18491841
    1850 context_declaring_list:                                 /* CFA */
     1842context_declaring_list:                                 // CFA
    18511843        type_specifier declarator
    18521844                {
    1853                     typedefTable.addToEnclosingScope2( TypedefTable::ID);
     1845                    typedefTable.addToEnclosingScope2( TypedefTable::ID );
    18541846                    $$ = $2->addType( $1 );
    18551847                }
    18561848        | context_declaring_list pop ',' push declarator
    18571849                {
    1858                     typedefTable.addToEnclosingScope2( TypedefTable::ID);
     1850                    typedefTable.addToEnclosingScope2( TypedefTable::ID );
    18591851                    $$ = $1->appendList( $1->cloneBaseType( $5 ) );
    18601852                }
    18611853        ;
    18621854
    1863 /***************************** EXTERNAL DEFINITIONS *****************************/
     1855//***************************** EXTERNAL DEFINITIONS *****************************
    18641856
    18651857translation_unit:
    1866         /* empty */                                     /* empty input file */
    1867                 {}
     1858        // empty
     1859                {}                                      // empty input file
    18681860        | external_definition_list
    18691861                {
    … …  
    18801872        | external_definition_list push external_definition
    18811873                {
    1882                   if ( $1 ) {
    1883                     $$ = $1->appendList( $3 );
    1884                   } else {
    1885                     $$ = $3;
    1886                   }
     1874                    if ( $1 ) {
     1875                        $$ = $1->appendList( $3 );
     1876                    } else {
     1877                        $$ = $3;
     1878                    }
    18871879                }
    18881880        ;
    18891881
    18901882external_definition_list_opt:
    1891         /* empty */
    1892                 {
    1893                   $$ = 0;
    1894                 }
     1883        // empty
     1884                { $$ = 0; }
    18951885        | external_definition_list
    18961886        ;
    … …  
    18991889        declaration
    19001890        | function_definition
    1901         | asm_statement                                 /* GCC, global assembler statement */
     1891        | asm_statement                                 // GCC, global assembler statement
    19021892                {}
    19031893        | EXTERN STRINGliteral
    … …  
    19061896                  linkage = LinkageSpec::fromString( *$2 );
    19071897                }
    1908           '{' external_definition_list_opt '}'          /* C++-style linkage specifier */
     1898          '{' external_definition_list_opt '}'          // C++-style linkage specifier
    19091899                {
    19101900                  linkage = linkageStack.top();
    … …  
    19171907
    19181908function_definition:
    1919         new_function_specifier compound_statement       /* CFA */
     1909        new_function_specifier compound_statement       // CFA
    19201910                {
    19211911                    typedefTable.addToEnclosingScope( TypedefTable::ID );
    … …  
    19231913                    $$ = $1->addFunctionBody( $2 );
    19241914                }
    1925         | declaration_qualifier_list new_function_specifier compound_statement /* CFA */
    1926                 /* declaration_qualifier_list also includes type_qualifier_list, so a semantic check is
    1927                    necessary to preclude them as a type_qualifier cannot appear in this context. */
     1915        | declaration_qualifier_list new_function_specifier compound_statement // CFA
     1916                // declaration_qualifier_list also includes type_qualifier_list, so a semantic check is
     1917                // necessary to preclude them as a type_qualifier cannot appear in this context.
    19281918                {
    19291919                    typedefTable.addToEnclosingScope( TypedefTable::ID );
    … …  
    19391929                }
    19401930
    1941                 /* These rules are a concession to the "implicit int" type_specifier because there is a
    1942                   significant amount of code with functions missing a type-specifier on the return type.
    1943                   Parsing is possible because function_definition does not appear in the context of an
    1944                   expression (nested functions would preclude this concession). A function prototype
    1945                    declaration must still have a type_specifier. OBSOLESCENT (see 1) */
     1931                // These rules are a concession to the "implicit int" type_specifier because there is a
     1932                // significant amount of code with functions missing a type-specifier on the return type.
     1933                // Parsing is possible because function_definition does not appear in the context of an
     1934                // expression (nested functions would preclude this concession). A function prototype
     1935                // declaration must still have a type_specifier. OBSOLESCENT (see 1)
    19461936        | function_declarator compound_statement
    19471937                {
    … …  
    19691959                }
    19701960
    1971                 /* Old-style K&R function definition, OBSOLESCENT (see 4) */
     1961                // Old-style K&R function definition, OBSOLESCENT (see 4)
    19721962        | declaration_specifier old_function_declarator push old_declaration_list_opt compound_statement
    19731963                {
    … …  
    19891979                }
    19901980
    1991                 /* Old-style K&R function definition with "implicit int" type_specifier, OBSOLESCENT (see 4) */
     1981                // Old-style K&R function definition with "implicit int" type_specifier, OBSOLESCENT (see 4)
    19921982        | declaration_qualifier_list old_function_declarator push old_declaration_list_opt compound_statement
    19931983                {
    … …  
    20122002
    20132003subrange:
    2014         constant_expression '~' constant_expression     /* CFA, integer subrange */
     2004        constant_expression '~' constant_expression     // CFA, integer subrange
    20152005                { $$ = new CompositeExprNode(new OperatorNode(OperatorNode::Range), $1, $3); }
    20162006        ;
    20172007
    2018 asm_name_opt:                                           /* GCC */
    2019         /* empty */
     2008asm_name_opt:                                           // GCC
     2009        // empty
    20202010        | ASM '(' string_literal_list ')' attribute_list_opt
    20212011        ;
    20222012
    2023 attribute_list_opt:                                     /* GCC */
    2024         /* empty */
     2013attribute_list_opt:                                     // GCC
     2014        // empty
    20252015        | attribute_list
    20262016        ;
    20272017
    2028 attribute_list:                                         /* GCC */
     2018attribute_list:                                         // GCC
    20292019        attribute
    20302020        | attribute_list attribute
    20312021        ;
    20322022
    2033 attribute:                                              /* GCC */
     2023attribute:                                              // GCC
    20342024        ATTRIBUTE '(' '(' attribute_parameter_list ')' ')'
    20352025        ;
    20362026
    2037 attribute_parameter_list:                               /* GCC */
     2027attribute_parameter_list:                               // GCC
    20382028        attrib
    20392029        | attribute_parameter_list ',' attrib
    20402030        ;
    20412031
    2042 attrib:                                                 /* GCC */
    2043         /* empty */
     2032attrib:                                                 // GCC
     2033        // empty
    20442034        | any_word
    20452035        | any_word '(' comma_expression_opt ')'
    20462036        ;
    20472037
    2048 any_word:                                               /* GCC */
     2038any_word:                                               // GCC
    20492039        identifier_or_typedef_name {}
    20502040        | storage_class_name {}
    … …  
    20532043        ;
    20542044
    2055 /* ============================================================================
    2056   The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are
    2057   necessary because the type of an identifier in wrapped around the identifier in the same form as its usage
    2058   in an expression, as in:
    2059 
    2060         int (*f())[10] { ... };
    2061         ... (*f())[3] += 1;     // definition mimics usage
    2062 
    2063   Because these patterns are highly recursive, changes at a lower level in the recursion require copying some
    2064   or all of the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a
    2065   particular context.
    2066    ============================================================================ */
    2067 
    2068 /* ----------------------------------------------------------------------------
    2069   The set of valid declarators before a compound statement for defining a function is less than the set of
    2070   declarators to define a variable or function prototype, e.g.:
    2071 
    2072         valid declaration       invalid definition
    2073         -----------------       ------------------
    2074         int f;                  int f {}
    2075         int *f;                 int *f {}
    2076         int f[10];              int f[10] {}
    2077         int (*f)(int);          int (*f)(int) {}
    2078 
    2079   To preclude this syntactic anomaly requires separating the grammar rules for variable and function
    2080   declarators, hence variable_declarator and function_declarator.
    2081    ---------------------------------------------------------------------------- */
    2082 
    2083 /* This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern
    2084    precludes declaring an array of functions versus a pointer to an array of functions. */
     2045// ============================================================================
     2046// The following sections are a series of grammar patterns used to parse declarators. Multiple patterns are
     2047// necessary because the type of an identifier in wrapped around the identifier in the same form as its usage
     2048// in an expression, as in:
     2049//
     2050//      int (*f())[10] { ... };
     2051//      ... (*f())[3] += 1;     // definition mimics usage
     2052//
     2053// Because these patterns are highly recursive, changes at a lower level in the recursion require copying some
     2054// or all of the pattern. Each of these patterns has some subtle variation to ensure correct syntax in a
     2055// particular context.
     2056// ============================================================================
     2057
     2058// ----------------------------------------------------------------------------
     2059// The set of valid declarators before a compound statement for defining a function is less than the set of
     2060// declarators to define a variable or function prototype, e.g.:
     2061//
     2062//      valid declaration       invalid definition
     2063//      -----------------       ------------------
     2064//      int f;                  int f {}
     2065//      int *f;                 int *f {}
     2066//      int f[10];              int f[10] {}
     2067//      int (*f)(int);          int (*f)(int) {}
     2068//
     2069// To preclude this syntactic anomaly requires separating the grammar rules for variable and function
     2070// declarators, hence variable_declarator and function_declarator.
     2071// ----------------------------------------------------------------------------
     2072
     2073// This pattern parses a declaration of a variable that is not redefining a typedef name. The pattern
     2074// precludes declaring an array of functions versus a pointer to an array of functions.
    20852075
    20862076variable_declarator:
    … …  
    20972087                    $$ = DeclarationNode::newName( $1 );
    20982088                }
    2099         | '(' paren_identifier ')'                      /* redundant parenthesis */
     2089        | '(' paren_identifier ')'                      // redundant parenthesis
    21002090                { $$ = $2; }
    21012091        ;
    … …  
    21152105        | '(' variable_ptr ')' array_dimension
    21162106                { $$ = $2->addArray( $4 ); }
    2117         | '(' variable_array ')' multi_array_dimension  /* redundant parenthesis */
     2107        | '(' variable_array ')' multi_array_dimension  // redundant parenthesis
    21182108                { $$ = $2->addArray( $4 ); }
    2119         | '(' variable_array ')'                        /* redundant parenthesis */
     2109        | '(' variable_array ')'                        // redundant parenthesis
    21202110                { $$ = $2; }
    21212111        ;
    21222112
    21232113variable_function:
    2124         '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */
     2114        '(' variable_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
    21252115                { $$ = $2->addParamList( $6 ); }
    2126         | '(' variable_function ')'                     /* redundant parenthesis */
    2127                 { $$ = $2; }
    2128         ;
    2129 
    2130 /* This pattern parses a function declarator that is not redefining a typedef name. Because functions cannot
    2131   be nested, there is no context where a function definition can redefine a typedef name. To allow nested
    2132   functions requires further separation of variable and function declarators in typedef_redeclarator.  The
    2133    pattern precludes returning arrays and functions versus pointers to arrays and functions. */
     2116        | '(' variable_function ')'                     // redundant parenthesis
     2117                { $$ = $2; }
     2118        ;
     2119
     2120// This pattern parses a function declarator that is not redefining a typedef name. Because functions cannot
     2121// be nested, there is no context where a function definition can redefine a typedef name. To allow nested
     2122// functions requires further separation of variable and function declarators in typedef_redeclarator.  The
     2123// pattern precludes returning arrays and functions versus pointers to arrays and functions.
    21342124
    21352125function_declarator:
    … …  
    21402130
    21412131function_no_ptr:
    2142         paren_identifier '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */
     2132        paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
    21432133                { $$ = $1->addParamList( $4 ); }
    21442134        | '(' function_ptr ')' '(' push parameter_type_list_opt pop ')'
    21452135                { $$ = $2->addParamList( $6 ); }
    2146         | '(' function_no_ptr ')'                       /* redundant parenthesis */
     2136        | '(' function_no_ptr ')'                       // redundant parenthesis
    21472137                { $$ = $2; }
    21482138        ;
    … …  
    21602150        '(' function_ptr ')' array_dimension
    21612151                { $$ = $2->addArray( $4 ); }
    2162         | '(' function_array ')' multi_array_dimension  /* redundant parenthesis */
     2152        | '(' function_array ')' multi_array_dimension  // redundant parenthesis
    21632153                { $$ = $2->addArray( $4 ); }
    2164         | '(' function_array ')'                        /* redundant parenthesis */
    2165                 { $$ = $2; }
    2166         ;
    2167 
    2168 /* This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4) that is not redefining a
    2169   typedef name (see function_declarator for additional comments). The pattern precludes returning arrays and
    2170    functions versus pointers to arrays and functions. */
     2154        | '(' function_array ')'                        // redundant parenthesis
     2155                { $$ = $2; }
     2156        ;
     2157
     2158// This pattern parses an old-style K&R function declarator (OBSOLESCENT, see 4) that is not redefining a
     2159// typedef name (see function_declarator for additional comments). The pattern precludes returning arrays and
     2160// functions versus pointers to arrays and functions.
    21712161
    21722162old_function_declarator:
    … …  
    21772167
    21782168old_function_no_ptr:
    2179         paren_identifier '(' identifier_list ')'        /* function_declarator handles empty parameter */
     2169        paren_identifier '(' identifier_list ')'        // function_declarator handles empty parameter
    21802170                { $$ = $1->addIdList( $3 ); }
    21812171        | '(' old_function_ptr ')' '(' identifier_list ')'
    21822172                { $$ = $2->addIdList( $5 ); }
    2183         | '(' old_function_no_ptr ')'                   /* redundant parenthesis */
     2173        | '(' old_function_no_ptr ')'                   // redundant parenthesis
    21842174                { $$ = $2; }
    21852175        ;
    … …  
    21972187        '(' old_function_ptr ')' array_dimension
    21982188                { $$ = $2->addArray( $4 ); }
    2199         | '(' old_function_array ')' multi_array_dimension /* redundant parenthesis */
     2189        | '(' old_function_array ')' multi_array_dimension // redundant parenthesis
    22002190                { $$ = $2->addArray( $4 ); }
    2201         | '(' old_function_array ')'                    /* redundant parenthesis */
    2202                 { $$ = $2; }
    2203         ;
    2204 
    2205 /* This pattern parses a declaration for a variable or function prototype that redefines a typedef name, e.g.:
    2206 
    2207         typedef int foo;
    2208         {
    2209            int foo; // redefine typedef name in new scope
    2210         }
    2211 
    2212   The pattern precludes declaring an array of functions versus a pointer to an array of functions, and
    2213    returning arrays and functions versus pointers to arrays and functions. */
     2191        | '(' old_function_array ')'                    // redundant parenthesis
     2192                { $$ = $2; }
     2193        ;
     2194
     2195// This pattern parses a declaration for a variable or function prototype that redefines a typedef name, e.g.:
     2196//
     2197//      typedef int foo;
     2198//      {
     2199//         int foo; // redefine typedef name in new scope
     2200//      }
     2201//
     2202// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and
     2203// returning arrays and functions versus pointers to arrays and functions.
    22142204
    22152205typedef_redeclarator:
    … …  
    22442234        | '(' typedef_ptr ')' array_dimension
    22452235                { $$ = $2->addArray( $4 ); }
    2246         | '(' typedef_array ')' multi_array_dimension   /* redundant parenthesis */
     2236        | '(' typedef_array ')' multi_array_dimension   // redundant parenthesis
    22472237                { $$ = $2->addArray( $4 ); }
    2248         | '(' typedef_array ')'                         /* redundant parenthesis */
     2238        | '(' typedef_array ')'                         // redundant parenthesis
    22492239                { $$ = $2; }
    22502240        ;
    22512241
    22522242typedef_function:
    2253         paren_typedef '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */
     2243        paren_typedef '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
    22542244                { $$ = $1->addParamList( $4 ); }
    2255         | '(' typedef_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */
     2245        | '(' typedef_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
    22562246                { $$ = $2->addParamList( $6 ); }
    2257         | '(' typedef_function ')'                      /* redundant parenthesis */
    2258                 { $$ = $2; }
    2259         ;
    2260 
    2261 /* This pattern parses a declaration for a parameter variable or function prototype that is not redefining a
    2262   typedef name and allows the C99 array options, which can only appear in a parameter list.  The pattern
    2263   precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
    2264    and functions versus pointers to arrays and functions. */
     2247        | '(' typedef_function ')'                      // redundant parenthesis
     2248                { $$ = $2; }
     2249        ;
     2250
     2251// This pattern parses a declaration for a parameter variable or function prototype that is not redefining a
     2252// typedef name and allows the C99 array options, which can only appear in a parameter list.  The pattern
     2253// precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
     2254// and functions versus pointers to arrays and functions.
    22652255
    22662256identifier_parameter_declarator:
    … …  
    22852275        | '(' identifier_parameter_ptr ')' array_dimension
    22862276                { $$ = $2->addArray( $4 ); }
    2287         | '(' identifier_parameter_array ')' multi_array_dimension /* redundant parenthesis */
     2277        | '(' identifier_parameter_array ')' multi_array_dimension // redundant parenthesis
    22882278                { $$ = $2->addArray( $4 ); }
    2289         | '(' identifier_parameter_array ')'            /* redundant parenthesis */
     2279        | '(' identifier_parameter_array ')'            // redundant parenthesis
    22902280                { $$ = $2; }
    22912281        ;
    22922282
    22932283identifier_parameter_function:
    2294         paren_identifier '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */
     2284        paren_identifier '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
    22952285                { $$ = $1->addParamList( $4 ); }
    2296         | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */
     2286        | '(' identifier_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
    22972287                { $$ = $2->addParamList( $6 ); }
    2298         | '(' identifier_parameter_function ')'         /* redundant parenthesis */
    2299                 { $$ = $2; }
    2300         ;
    2301 
    2302 /* This pattern parses a declaration for a parameter variable or function prototype that is redefining a
    2303    typedef name, e.g.:
    2304 
    2305         typedef int foo;
    2306         int f( int foo ); // redefine typedef name in new scope
    2307 
    2308    and allows the C99 array options, which can only appear in a parameter list.  In addition, the pattern
    2309    handles the special meaning of parenthesis around a typedef name:
    2310 
    2311         ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in
    2312         parentheses is taken to be an abstract declarator that specifies a function with a single parameter,
    2313         not as redundant parentheses around the identifier."
    2314 
    2315   which precludes the following cases:
    2316 
    2317         typedef float T;
    2318         int f( int ( T [5] ) );                 // see abstract_parameter_declarator
    2319         int g( int ( T ( int ) ) );             // see abstract_parameter_declarator
    2320         int f( int f1( T a[5] ) );              // see identifier_parameter_declarator
    2321         int g( int g1( T g2( int p ) ) );       // see identifier_parameter_declarator
    2322 
    2323    In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type
    2324    list, and not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes
    2325    declaring an array of functions versus a pointer to an array of functions, and returning arrays and
    2326    functions versus pointers to arrays and functions. */
     2288        | '(' identifier_parameter_function ')'         // redundant parenthesis
     2289                { $$ = $2; }
     2290        ;
     2291
     2292// This pattern parses a declaration for a parameter variable or function prototype that is redefining a typedef name,
     2293// e.g.:
     2294//
     2295//      typedef int foo;
     2296//      int f( int foo ); // redefine typedef name in new scope
     2297//
     2298// and allows the C99 array options, which can only appear in a parameter list.  In addition, the pattern handles the
     2299// special meaning of parenthesis around a typedef name:
     2300//
     2301//      ISO/IEC 9899:1999 Section 6.7.5.3(11) : "In a parameter declaration, a single typedef name in
     2302//      parentheses is taken to be an abstract declarator that specifies a function with a single parameter,
     2303//      not as redundant parentheses around the identifier."
     2304//
     2305// which precludes the following cases:
     2306//
     2307//      typedef float T;
     2308//      int f( int ( T [5] ) );                 // see abstract_parameter_declarator
     2309//      int g( int ( T ( int ) ) );             // see abstract_parameter_declarator
     2310//      int f( int f1( T a[5] ) );              // see identifier_parameter_declarator
     2311//      int g( int g1( T g2( int p ) ) );       // see identifier_parameter_declarator
     2312//
     2313// In essence, a '(' immediately to the left of typedef name, T, is interpreted as starting a parameter type list, and
     2314// not as redundant parentheses around a redeclaration of T. Finally, the pattern also precludes declaring an array of
     2315// functions versus a pointer to an array of functions, and returning arrays and functions versus pointers to arrays and
     2316// functions.
    23272317
    23282318typedef_parameter_redeclarator:
    … …  
    23582348
    23592349typedef_parameter_function:
    2360         typedef '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */
     2350        typedef '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
    23612351                { $$ = $1->addParamList( $4 ); }
    2362         | '(' typedef_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */
     2352        | '(' typedef_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
    23632353                { $$ = $2->addParamList( $6 ); }
    23642354        ;
    23652355
    2366 /* This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no
    2367    identifier to which the type applies, e.g.:
    2368 
    2369         sizeof( int );
    2370         sizeof( int [10] );
    2371 
    2372    The pattern precludes declaring an array of functions versus a pointer to an array of functions, and
    2373    returning arrays and functions versus pointers to arrays and functions. */
     2356// This pattern parses a declaration of an abstract variable or function prototype, i.e., there is no identifier to
     2357// which the type applies, e.g.:
     2358//
     2359//      sizeof( int );
     2360//      sizeof( int [10] );
     2361//
     2362// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
     2363// and functions versus pointers to arrays and functions.
    23742364
    23752365abstract_declarator:
    … …  
    23962386        | '(' abstract_ptr ')' array_dimension
    23972387                { $$ = $2->addArray( $4 ); }
    2398         | '(' abstract_array ')' multi_array_dimension  /* redundant parenthesis */
     2388        | '(' abstract_array ')' multi_array_dimension  // redundant parenthesis
    23992389                { $$ = $2->addArray( $4 ); }
    2400         | '(' abstract_array ')'                        /* redundant parenthesis */
     2390        | '(' abstract_array ')'                        // redundant parenthesis
    24012391                { $$ = $2; }
    24022392        ;
    24032393
    24042394abstract_function:
    2405         '(' push parameter_type_list_opt pop ')'        /* empty parameter list OBSOLESCENT (see 3) */
     2395        '(' push parameter_type_list_opt pop ')'        // empty parameter list OBSOLESCENT (see 3)
    24062396                { $$ = DeclarationNode::newFunction( 0, 0, $3, 0 ); }
    2407         | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */
     2397        | '(' abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
    24082398                { $$ = $2->addParamList( $6 ); }
    2409         | '(' abstract_function ')'                     /* redundant parenthesis */
     2399        | '(' abstract_function ')'                     // redundant parenthesis
    24102400                { $$ = $2; }
    24112401        ;
    24122402
    24132403array_dimension:
    2414                 /* Only the first dimension can be empty. */
     2404                // Only the first dimension can be empty.
    24152405        '[' push pop ']'
    24162406                { $$ = DeclarationNode::newArray( 0, 0, false ); }
    … …  
    24232413        '[' push assignment_expression pop ']'
    24242414                { $$ = DeclarationNode::newArray( $3, 0, false ); }
    2425         | '[' push '*' pop ']'                          /* C99 */
     2415        | '[' push '*' pop ']'                          // C99
    24262416                { $$ = DeclarationNode::newVarArray( 0 ); }
    24272417        | multi_array_dimension '[' push assignment_expression pop ']'
    24282418                { $$ = $1->addArray( DeclarationNode::newArray( $4, 0, false ) ); }
    2429         | multi_array_dimension '[' push '*' pop ']'    /* C99 */
     2419        | multi_array_dimension '[' push '*' pop ']'    // C99
    24302420                { $$ = $1->addArray( DeclarationNode::newVarArray( 0 ) ); }
    24312421        ;
    24322422
    2433 /* This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no
    2434   identifier to which the type applies, e.g.:
    2435 
    2436         int f( int );           // abstract variable parameter; no parameter name specified
    2437         int f( int (int) );     // abstract function-prototype parameter; no parameter name specified
    2438 
    2439    The pattern precludes declaring an array of functions versus a pointer to an array of functions, and
    2440    returning arrays and functions versus pointers to arrays and functions. */
     2423// This pattern parses a declaration of a parameter abstract variable or function prototype, i.e., there is no
     2424// identifier to which the type applies, e.g.:
     2425//
     2426//      int f( int );           // abstract variable parameter; no parameter name specified
     2427//      int f( int (int) );     // abstract function-prototype parameter; no parameter name specified
     2428//
     2429// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
     2430// and functions versus pointers to arrays and functions. */
    24412431
    24422432abstract_parameter_declarator:
    … …  
    24632453        | '(' abstract_parameter_ptr ')' array_parameter_dimension
    24642454                { $$ = $2->addArray( $4 ); }
    2465         | '(' abstract_parameter_array ')' multi_array_dimension /* redundant parenthesis */
     2455        | '(' abstract_parameter_array ')' multi_array_dimension // redundant parenthesis
    24662456                { $$ = $2->addArray( $4 ); }
    2467         | '(' abstract_parameter_array ')'              /* redundant parenthesis */
     2457        | '(' abstract_parameter_array ')'              // redundant parenthesis
    24682458                { $$ = $2; }
    24692459        ;
    24702460
    24712461abstract_parameter_function:
    2472         '(' push parameter_type_list_opt pop ')'        /* empty parameter list OBSOLESCENT (see 3) */
     2462        '(' push parameter_type_list_opt pop ')'        // empty parameter list OBSOLESCENT (see 3)
    24732463                { $$ = DeclarationNode::newFunction( 0, 0, $3, 0 ); }
    2474         | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */
     2464        | '(' abstract_parameter_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
    24752465                { $$ = $2->addParamList( $6 ); }
    2476         | '(' abstract_parameter_function ')'           /* redundant parenthesis */
     2466        | '(' abstract_parameter_function ')'           // redundant parenthesis
    24772467                { $$ = $2; }
    24782468        ;
    24792469
    24802470array_parameter_dimension:
    2481                 /* Only the first dimension can be empty or have qualifiers. */
     2471                // Only the first dimension can be empty or have qualifiers.
    24822472        array_parameter_1st_dimension
    24832473        | array_parameter_1st_dimension multi_array_dimension
    … …  
    24862476        ;
    24872477
    2488 /* The declaration of an array parameter has additional syntax over arrays in normal variable declarations:
    2489 
    2490         ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall
    2491         appear only in a declaration of a function parameter with an array type, and then only in the
    2492         outermost array type derivation." */
     2478// The declaration of an array parameter has additional syntax over arrays in normal variable declarations:
     2479//
     2480//      ISO/IEC 9899:1999 Section 6.7.5.2(1) : "The optional type qualifiers and the keyword static shall appear only in
     2481//      a declaration of a function parameter with an array type, and then only in the outermost array type derivation."
    24932482
    24942483array_parameter_1st_dimension:
    … …  
    24962485                { $$ = DeclarationNode::newArray( 0, 0, false ); }
    24972486        // multi_array_dimension handles the '[' '*' ']' case
    2498         | '[' push type_qualifier_list '*' pop ']'      /* remaining C99 */
     2487        | '[' push type_qualifier_list '*' pop ']'      // remaining C99
    24992488                { $$ = DeclarationNode::newVarArray( $3 ); }
    25002489        | '[' push type_qualifier_list pop ']'
    … …  
    25092498        ;
    25102499
    2511 /* This pattern parses a declaration of an abstract variable, i.e., there is no identifier to which the type
    2512    applies, e.g.:
    2513 
    2514         sizeof( int ); // abstract variable; no identifier name specified
    2515 
    2516    The pattern precludes declaring an array of functions versus a pointer to an array of functions, and
    2517    returning arrays and functions versus pointers to arrays and functions. */
     2500// This pattern parses a declaration of an abstract variable, i.e., there is no identifier to which the type applies,
     2501// e.g.:
     2502//
     2503//      sizeof( int ); // abstract variable; no identifier name specified
     2504//
     2505// The pattern precludes declaring an array of functions versus a pointer to an array of functions, and returning arrays
     2506// and functions versus pointers to arrays and functions. */
    25182507
    25192508variable_abstract_declarator:
    … …  
    25402529        | '(' variable_abstract_ptr ')' array_dimension
    25412530                { $$ = $2->addArray( $4 ); }
    2542         | '(' variable_abstract_array ')' multi_array_dimension /* redundant parenthesis */
     2531        | '(' variable_abstract_array ')' multi_array_dimension // redundant parenthesis
    25432532                { $$ = $2->addArray( $4 ); }
    2544         | '(' variable_abstract_array ')'               /* redundant parenthesis */
     2533        | '(' variable_abstract_array ')'               // redundant parenthesis
    25452534                { $$ = $2; }
    25462535        ;
    25472536
    25482537variable_abstract_function:
    2549         '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' /* empty parameter list OBSOLESCENT (see 3) */
     2538        '(' variable_abstract_ptr ')' '(' push parameter_type_list_opt pop ')' // empty parameter list OBSOLESCENT (see 3)
    25502539                { $$ = $2->addParamList( $6 ); }
    2551         | '(' variable_abstract_function ')'            /* redundant parenthesis */
    2552                 { $$ = $2; }
    2553         ;
    2554 
    2555 /* This pattern parses a new-style declaration for a parameter variable or function prototype that is either
    2556    an identifier or typedef name and allows the C99 array options, which can only appear in a parameter
    2557    list. */
    2558 
    2559 new_identifier_parameter_declarator_tuple:              /* CFA */
     2540        | '(' variable_abstract_function ')'            // redundant parenthesis
     2541                { $$ = $2; }
     2542        ;
     2543
     2544// This pattern parses a new-style declaration for a parameter variable or function prototype that is either an
     2545// identifier or typedef name and allows the C99 array options, which can only appear in a parameter list.
     2546
     2547new_identifier_parameter_declarator_tuple:              // CFA
    25602548        new_identifier_parameter_declarator_no_tuple
    25612549        | new_abstract_tuple
    … …  
    25642552        ;
    25652553
    2566 new_identifier_parameter_declarator_no_tuple:           /* CFA */
     2554new_identifier_parameter_declarator_no_tuple:           // CFA
    25672555        new_identifier_parameter_ptr
    25682556        | new_identifier_parameter_array
    25692557        ;
    25702558
    2571 new_identifier_parameter_ptr:                           /* CFA */
     2559new_identifier_parameter_ptr:                           // CFA
    25722560        '*' type_specifier
    25732561                { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); }
    … …  
    25842572        ;
    25852573
    2586 new_identifier_parameter_array:                         /* CFA */
    2587                 /* Only the first dimension can be empty or have qualifiers. Empty dimension must be factored
    2588                    out due to shift/reduce conflict with new-style empty (void) function return type. */
     2574new_identifier_parameter_array:                         // CFA
     2575                // Only the first dimension can be empty or have qualifiers. Empty dimension must be factored out due to
     2576                // shift/reduce conflict with new-style empty (void) function return type. */
    25892577        '[' push pop ']' type_specifier
    25902578                { $$ = $5->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
    … …  
    26102598
    26112599new_array_parameter_1st_dimension:
    2612         '[' push type_qualifier_list '*' pop ']'        /* remaining C99 */
     2600        '[' push type_qualifier_list '*' pop ']'        // remaining C99
    26132601                { $$ = DeclarationNode::newVarArray( $3 ); }
    26142602        | '[' push type_qualifier_list assignment_expression pop ']'
    26152603                { $$ = DeclarationNode::newArray( $4, $3, false ); }
    26162604        | '[' push declaration_qualifier_list assignment_expression pop ']'
    2617                 /* declaration_qualifier_list must be used because of shift/reduce conflict with
    2618                    assignment_expression, so a semantic check is necessary to preclude them as a
    2619                    type_qualifier cannot appear in this context. */
     2605                // declaration_qualifier_list must be used because of shift/reduce conflict with assignment_expression,
     2606                // so a semantic check is necessary to preclude them as a type_qualifier cannot appear in this
     2607                // context.
    26202608                { $$ = DeclarationNode::newArray( $4, $3, true ); }
    26212609        | '[' push declaration_qualifier_list type_qualifier_list assignment_expression pop ']'
    … …  
    26232611        ;
    26242612
    2625 /* This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is
    2626    no identifier to which the type applies, e.g.:
    2627 
    2628         [int] f( int );         // abstract variable parameter; no parameter name specified
    2629         [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified
    2630 
    2631   These rules need LR(3):
    2632 
    2633         new_abstract_tuple identifier_or_typedef_name
    2634         '[' new_parameter_list ']' identifier_or_typedef_name '(' new_parameter_type_list_opt ')'
    2635 
    2636   since a function return type can be syntactically identical to a tuple type:
    2637 
    2638         [int, int] t;
    2639         [int, int] f( int );
    2640 
    2641   Therefore, it is necessary to look at the token after identifier_or_typedef_name to know when to reduce
    2642    new_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow
    2643    the necessary lookahead. To accomplish this, new_abstract_declarator has an entry point without tuple, and
    2644    tuple declarations are duplicated when appearing with new_function_specifier. */
    2645 
    2646 new_abstract_declarator_tuple:                          /* CFA */
     2613// This pattern parses a new-style declaration of an abstract variable or function prototype, i.e., there is no
     2614// identifier to which the type applies, e.g.:
     2615//
     2616//      [int] f( int );         // abstract variable parameter; no parameter name specified
     2617//      [int] f( [int] (int) ); // abstract function-prototype parameter; no parameter name specified
     2618//
     2619// These rules need LR(3):
     2620//
     2621//      new_abstract_tuple identifier_or_typedef_name
     2622//      '[' new_parameter_list ']' identifier_or_typedef_name '(' new_parameter_type_list_opt ')'
     2623//
     2624// since a function return type can be syntactically identical to a tuple type:
     2625//
     2626//      [int, int] t;
     2627//      [int, int] f( int );
     2628//
     2629// Therefore, it is necessary to look at the token after identifier_or_typedef_name to know when to reduce
     2630// new_abstract_tuple. To make this LR(1), several rules have to be flattened (lengthened) to allow the necessary
     2631// lookahead. To accomplish this, new_abstract_declarator has an entry point without tuple, and tuple declarations are
     2632// duplicated when appearing with new_function_specifier.
     2633
     2634new_abstract_declarator_tuple:                          // CFA
    26472635        new_abstract_tuple
    26482636        | type_qualifier_list new_abstract_tuple
    … …  
    26512639        ;
    26522640
    2653 new_abstract_declarator_no_tuple:                       /* CFA */
     2641new_abstract_declarator_no_tuple:                       // CFA
    26542642        new_abstract_ptr
    26552643        | new_abstract_array
    26562644        ;
    26572645
    2658 new_abstract_ptr:                                       /* CFA */
     2646new_abstract_ptr:                                       // CFA
    26592647        '*' type_specifier
    26602648                { $$ = $2->addNewPointer( DeclarationNode::newPointer( 0 ) ); }
    … …  
    26712659        ;
    26722660
    2673 new_abstract_array:                                     /* CFA */
    2674                 /* Only the first dimension can be empty. Empty dimension must be factored out due to
    2675                    shift/reduce conflict with empty (void) function return type. */
     2661new_abstract_array:                                     // CFA
     2662                // Only the first dimension can be empty. Empty dimension must be factored out due to shift/reduce
     2663                // conflict with empty (void) function return type.
    26762664        '[' push pop ']' type_specifier
    26772665                { $$ = $5->addNewArray( DeclarationNode::newArray( 0, 0, false ) ); }
    … …  
    26882676        ;
    26892677
    2690 new_abstract_tuple:                                     /* CFA */
     2678new_abstract_tuple:                                     // CFA
    26912679        '[' push new_abstract_parameter_list pop ']'
    26922680                { $$ = DeclarationNode::newTuple( $3 ); }
    26932681        ;
    26942682
    2695 new_abstract_function:                                  /* CFA */
     2683new_abstract_function:                                  // CFA
    26962684        '[' push pop ']' '(' new_parameter_type_list_opt ')'
    26972685                { $$ = DeclarationNode::newFunction( 0, DeclarationNode::newTuple( 0 ), $6, 0 ); }
    … …  
    27022690        ;
    27032691
    2704 /* 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration
    2705       specifiers in each declaration, and in the specifier-qualifier list in each structure declaration and
    2706       type name."
    2707 
    2708    2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the
    2709       beginning of the declaration specifiers in a declaration is an obsolescent feature."
    2710 
    2711    3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not
    2712       prototype-format parameter type declarators) is an obsolescent feature."
    2713 
    2714    4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter
    2715       identifier and declaration lists (not prototype-format parameter type and identifier declarators) is
    2716       an obsolescent feature."  */
    2717 
    2718 /************************* MISCELLANEOUS ********************************/
    2719 
    2720 comma_opt:                                              /* redundant comma */
    2721         /* empty */
     2692// 1) ISO/IEC 9899:1999 Section 6.7.2(2) : "At least one type specifier shall be given in the declaration specifiers in
     2693//    each declaration, and in the specifier-qualifier list in each structure declaration and type name."
     2694//
     2695// 2) ISO/IEC 9899:1999 Section 6.11.5(1) : "The placement of a storage-class specifier other than at the beginning of
     2696//    the declaration specifiers in a declaration is an obsolescent feature."
     2697//
     2698// 3) ISO/IEC 9899:1999 Section 6.11.6(1) : "The use of function declarators with empty parentheses (not
     2699//    prototype-format parameter type declarators) is an obsolescent feature."
     2700//
     2701// 4) ISO/IEC 9899:1999 Section 6.11.7(1) : "The use of function definitions with separate parameter identifier and
     2702//    declaration lists (not prototype-format parameter type and identifier declarators) is an obsolescent feature.
     2703
     2704//************************* MISCELLANEOUS ********************************
     2705
     2706comma_opt:                                              // redundant comma
     2707        // empty
    27222708        | ','
    27232709        ;
    27242710
    27252711assignment_opt:
    2726         /* empty */
     2712        // empty
    27272713                { $$ = 0; }
    27282714        | '=' assignment_expression
    … …  
    27312717
    27322718%%
    2733 /* ----end of grammar----*/
     2719// ----end of grammar----
    27342720
    27352721void yyerror( char *string ) {
    … …  
    27432729}
    27442730
    2745 /* Local Variables: */
    2746 /* fill-column: 110 */
    2747 /* compile-command: "make install" */
    2748 /* End: */
     2731// Local Variables: //
     2732// fill-column: 110 //
     2733// compile-command: "make install" //
     2734// End: //
Note: See TracChangeset for help on using the changeset viewer.