source: src/Parser/ExpressionNode.cc@ b0440b7

ADT aaron-thesis arm-eh ast-experimental cleanup-dtors deferred_resn demangler enum forall-pointer-decay jacob/cs343-translation jenkins-sandbox new-ast new-ast-unique-expr new-env no_list persistent-indexer pthread-emulation qualifiedEnum resolv-new with_gc
Last change on this file since b0440b7 was cda7889, checked in by Rob Schluntz <rschlunt@…>, 8 years ago

Parser no longer takes address of parameters to reference functions, implicit otype functions take references
  • Property mode set to 100644
File size: 15.5 KB
Line 
1//
2// Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
3//
4// The contents of this file are covered under the licence agreement in the
5// file "LICENCE" distributed with Cforall.
6//
7// ExpressionNode.cc --
8//
9// Author : Rodolfo G. Esteves
10// Created On : Sat May 16 13:17:07 2015
11// Last Modified By : Peter A. Buhr
12// Last Modified On : Wed Jun 28 21:08:15 2017
13// Update Count : 542
14//
15
16#include <cassert>
17#include <cctype>
18#include <climits>
19#include <cstdio>
20#include <algorithm>
21#include <sstream>
22
23#include "ParseNode.h"
24#include "TypeData.h"
25#include "SynTree/Constant.h"
26#include "SynTree/Expression.h"
27#include "SynTree/Declaration.h"
28#include "Common/UnimplementedError.h"
29#include "parserutility.h"
30#include "Common/utility.h"
31
32using namespace std;
33
34//##############################################################################
35
36// Difficult to separate extra parts of constants during lexing because actions are not allow in the middle of patterns:
37//
38// prefix action constant action suffix
39//
40// Alternatively, breaking a pattern using BEGIN does not work if the following pattern can be empty:
41//
42// constant BEGIN CONT ...
43// <CONT>(...)? BEGIN 0 ... // possible empty suffix
44//
45// because the CONT rule is NOT triggered if the pattern is empty. Hence, constants are reparsed here to determine their
46// type.
47
48Type::Qualifiers emptyQualifiers; // no qualifiers on constants
49
50static inline bool checkU( char c ) { return c == 'u' || c == 'U'; }
51static inline bool checkL( char c ) { return c == 'l' || c == 'L'; }
52static inline bool checkF( char c ) { return c == 'f' || c == 'F'; }
53static inline bool checkD( char c ) { return c == 'd' || c == 'D'; }
54static inline bool checkI( char c ) { return c == 'i' || c == 'I'; }
55static inline bool checkX( char c ) { return c == 'x' || c == 'X'; }
56
57Expression *build_constantInteger( const std::string & str ) {
58 static const BasicType::Kind kind[2][3] = {
59 { BasicType::SignedInt, BasicType::LongSignedInt, BasicType::LongLongSignedInt },
60 { BasicType::UnsignedInt, BasicType::LongUnsignedInt, BasicType::LongLongUnsignedInt },
61 };
62 bool dec = true, Unsigned = false; // decimal, unsigned constant
63 int size; // 0 => int, 1 => long, 2 => long long
64 unsigned long long int v; // converted integral value
65 size_t last = str.length() - 1; // last character of constant
66
67 if ( str[0] == '0' ) { // octal/hex constant ?
68 dec = false;
69 if ( last != 0 && checkX( str[1] ) ) { // hex constant ?
70 sscanf( (char *)str.c_str(), "%llx", &v );
71 //printf( "%llx %llu\n", v, v );
72 } else { // octal constant
73 sscanf( (char *)str.c_str(), "%llo", &v );
74 //printf( "%llo %llu\n", v, v );
75 } // if
76 } else { // decimal constant ?
77 sscanf( (char *)str.c_str(), "%llu", &v );
78 //printf( "%llu %llu\n", v, v );
79 } // if
80
81 if ( v <= INT_MAX ) { // signed int
82 size = 0;
83 } else if ( v <= UINT_MAX && ! dec ) { // unsigned int
84 size = 0;
85 Unsigned = true; // unsigned
86 } else if ( v <= LONG_MAX ) { // signed long int
87 size = 1;
88 } else if ( v <= ULONG_MAX && ( ! dec || LONG_MAX == LLONG_MAX ) ) { // signed long int
89 size = 1;
90 Unsigned = true; // unsigned long int
91 } else if ( v <= LLONG_MAX ) { // signed long long int
92 size = 2;
93 } else { // unsigned long long int
94 size = 2;
95 Unsigned = true; // unsigned long long int
96 } // if
97
98 if ( checkU( str[last] ) ) { // suffix 'u' ?
99 Unsigned = true;
100 if ( last > 0 && checkL( str[last - 1] ) ) { // suffix 'l' ?
101 size = 1;
102 if ( last > 1 && checkL( str[last - 2] ) ) { // suffix 'll' ?
103 size = 2;
104 } // if
105 } // if
106 } else if ( checkL( str[ last ] ) ) { // suffix 'l' ?
107 size = 1;
108 if ( last > 0 && checkL( str[last - 1] ) ) { // suffix 'll' ?
109 size = 2;
110 if ( last > 1 && checkU( str[last - 2] ) ) { // suffix 'u' ?
111 Unsigned = true;
112 } // if
113 } else {
114 if ( last > 0 && checkU( str[last - 1] ) ) { // suffix 'u' ?
115 Unsigned = true;
116 } // if
117 } // if
118 } // if
119
120 Expression * ret = new ConstantExpr( Constant( new BasicType( emptyQualifiers, kind[Unsigned][size] ), str, v ) );
121 delete &str; // created by lex
122 return ret;
123} // build_constantInteger
124
125Expression *build_constantFloat( const std::string & str ) {
126 static const BasicType::Kind kind[2][3] = {
127 { BasicType::Float, BasicType::Double, BasicType::LongDouble },
128 { BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
129 };
130
131 bool complx = false; // real, complex
132 int size = 1; // 0 => float, 1 => double (default), 2 => long double
133 // floating-point constant has minimum of 2 characters: 1. or .1
134 size_t last = str.length() - 1;
135 double v;
136
137 sscanf( str.c_str(), "%lg", &v );
138
139 if ( checkI( str[last] ) ) { // imaginary ?
140 complx = true;
141 last -= 1; // backup one character
142 } // if
143
144 if ( checkF( str[last] ) ) { // float ?
145 size = 0;
146 } else if ( checkD( str[last] ) ) { // double ?
147 size = 1;
148 } else if ( checkL( str[last] ) ) { // long double ?
149 size = 2;
150 } // if
151 if ( ! complx && checkI( str[last - 1] ) ) { // imaginary ?
152 complx = true;
153 } // if
154
155 Expression * ret = new ConstantExpr( Constant( new BasicType( emptyQualifiers, kind[complx][size] ), str, v ) );
156 delete &str; // created by lex
157 return ret;
158} // build_constantFloat
159
160Expression *build_constantChar( const std::string & str ) {
161 Expression * ret = new ConstantExpr( Constant( new BasicType( emptyQualifiers, BasicType::Char ), str, (unsigned long long int)(unsigned char)str[1] ) );
162 delete &str; // created by lex
163 return ret;
164} // build_constantChar
165
166ConstantExpr *build_constantStr( const std::string & str ) {
167 // string should probably be a primitive type
168 ArrayType *at = new ArrayType( emptyQualifiers, new BasicType( Type::Qualifiers( Type::Const ), BasicType::Char ),
169 new ConstantExpr( Constant::from_ulong( str.size() + 1 - 2 ) ), // +1 for '\0' and -2 for '"'
170 false, false );
171 // constant 0 is ignored for pure string value
172 ConstantExpr * ret = new ConstantExpr( Constant( at, str, (unsigned long long int)0 ) );
173 delete &str; // created by lex
174 return ret;
175} // build_constantStr
176
177Expression *build_constantZeroOne( const std::string & str ) {
178 Expression * ret = new ConstantExpr( Constant( str == "0" ? (Type *)new ZeroType( emptyQualifiers ) : (Type*)new OneType( emptyQualifiers ), str,
179 str == "0" ? (unsigned long long int)0 : (unsigned long long int)1 ) );
180 delete &str; // created by lex
181 return ret;
182} // build_constantChar
183
184Expression * build_field_name_FLOATINGconstant( const std::string & str ) {
185 // str is of the form A.B -> separate at the . and return member expression
186 int a, b;
187 char dot;
188 std::stringstream ss( str );
189 ss >> a >> dot >> b;
190 UntypedMemberExpr * ret = new UntypedMemberExpr( new ConstantExpr( Constant::from_int( b ) ), new ConstantExpr( Constant::from_int( a ) ) );
191 delete &str;
192 return ret;
193} // build_field_name_FLOATINGconstant
194
195Expression * make_field_name_fraction_constants( Expression * fieldName, Expression * fracts ) {
196 if ( fracts ) {
197 if ( UntypedMemberExpr * memberExpr = dynamic_cast< UntypedMemberExpr * >( fracts ) ) {
198 memberExpr->set_member( make_field_name_fraction_constants( fieldName, memberExpr->get_aggregate() ) );
199 return memberExpr;
200 } else {
201 return new UntypedMemberExpr( fracts, fieldName );
202 }
203 }
204 return fieldName;
205} // make_field_name_fraction_constants
206
207Expression * build_field_name_fraction_constants( Expression * fieldName, ExpressionNode * fracts ) {
208 return make_field_name_fraction_constants( fieldName, maybeMoveBuild< Expression >( fracts ) );
209} // build_field_name_fraction_constants
210
211
212
213Expression * build_field_name_REALFRACTIONconstant( const std::string & str ) {
214 if ( str.find_first_not_of( "0123456789", 1 ) != string::npos ) throw SemanticError( "invalid tuple index " + str );
215 Expression * ret = build_constantInteger( *new std::string( str.substr(1) ) );
216 delete &str;
217 return ret;
218} // build_field_name_REALFRACTIONconstant
219
220Expression * build_field_name_REALDECIMALconstant( const std::string & str ) {
221 if ( str[str.size()-1] != '.' ) throw SemanticError( "invalid tuple index " + str );
222 Expression * ret = build_constantInteger( *new std::string( str.substr( 0, str.size()-1 ) ) );
223 delete &str;
224 return ret;
225} // build_field_name_REALDECIMALconstant
226
227NameExpr * build_varref( const string *name ) {
228 NameExpr *expr = new NameExpr( *name, nullptr );
229 delete name;
230 return expr;
231}
232
233static const char *OperName[] = {
234 // diadic
235 "SizeOf", "AlignOf", "OffsetOf", "?+?", "?-?", "?*?", "?/?", "?%?", "||", "&&",
236 "?|?", "?&?", "?^?", "Cast", "?<<?", "?>>?", "?<?", "?>?", "?<=?", "?>=?", "?==?", "?!=?",
237 "?=?", "?@=?", "?*=?", "?/=?", "?%=?", "?+=?", "?-=?", "?<<=?", "?>>=?", "?&=?", "?^=?", "?|=?",
238 "?[?]", "...",
239 // monadic
240 "+?", "-?", "AddressOf", "*?", "!?", "~?", "++?", "?++", "--?", "?--", "&&"
241};
242
243Expression *build_cast( DeclarationNode *decl_node, ExpressionNode *expr_node ) {
244 Type *targetType = maybeMoveBuildType( decl_node );
245 if ( dynamic_cast< VoidType * >( targetType ) ) {
246 delete targetType;
247 return new CastExpr( maybeMoveBuild< Expression >(expr_node) );
248 } else {
249 return new CastExpr( maybeMoveBuild< Expression >(expr_node), targetType );
250 } // if
251}
252
253Expression *build_fieldSel( ExpressionNode *expr_node, Expression *member ) {
254 UntypedMemberExpr *ret = new UntypedMemberExpr( member, maybeMoveBuild< Expression >(expr_node) );
255 return ret;
256}
257
258Expression *build_pfieldSel( ExpressionNode *expr_node, Expression *member ) {
259 UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) );
260 deref->location = expr_node->location;
261 deref->get_args().push_back( maybeMoveBuild< Expression >(expr_node) );
262 UntypedMemberExpr *ret = new UntypedMemberExpr( member, deref );
263 return ret;
264}
265
266Expression *build_addressOf( ExpressionNode *expr_node ) {
267 return new AddressExpr( maybeMoveBuild< Expression >(expr_node) );
268}
269Expression *build_sizeOfexpr( ExpressionNode *expr_node ) {
270 return new SizeofExpr( maybeMoveBuild< Expression >(expr_node) );
271}
272Expression *build_sizeOftype( DeclarationNode *decl_node ) {
273 return new SizeofExpr( maybeMoveBuildType( decl_node ) );
274}
275Expression *build_alignOfexpr( ExpressionNode *expr_node ) {
276 return new AlignofExpr( maybeMoveBuild< Expression >(expr_node) );
277}
278Expression *build_alignOftype( DeclarationNode *decl_node ) {
279 return new AlignofExpr( maybeMoveBuildType( decl_node) );
280}
281Expression *build_offsetOf( DeclarationNode *decl_node, NameExpr *member ) {
282 Expression * ret = new UntypedOffsetofExpr( maybeMoveBuildType( decl_node ), member->get_name() );
283 delete member;
284 return ret;
285}
286
287Expression *build_and_or( ExpressionNode *expr_node1, ExpressionNode *expr_node2, bool kind ) {
288 return new LogicalExpr( notZeroExpr( maybeMoveBuild< Expression >(expr_node1) ), notZeroExpr( maybeMoveBuild< Expression >(expr_node2) ), kind );
289}
290
291Expression *build_unary_val( OperKinds op, ExpressionNode *expr_node ) {
292 std::list< Expression * > args;
293 args.push_back( maybeMoveBuild< Expression >(expr_node) );
294 return new UntypedExpr( new NameExpr( OperName[ (int)op ] ), args );
295}
296Expression *build_unary_ptr( OperKinds op, ExpressionNode *expr_node ) {
297 std::list< Expression * > args;
298 args.push_back( maybeMoveBuild< Expression >(expr_node) ); // xxx
299 return new UntypedExpr( new NameExpr( OperName[ (int)op ] ), args );
300}
301Expression *build_binary_val( OperKinds op, ExpressionNode *expr_node1, ExpressionNode *expr_node2 ) {
302 std::list< Expression * > args;
303 args.push_back( maybeMoveBuild< Expression >(expr_node1) );
304 args.push_back( maybeMoveBuild< Expression >(expr_node2) );
305 return new UntypedExpr( new NameExpr( OperName[ (int)op ] ), args );
306}
307Expression *build_binary_ptr( OperKinds op, ExpressionNode *expr_node1, ExpressionNode *expr_node2 ) {
308 std::list< Expression * > args;
309 args.push_back( maybeMoveBuild< Expression >(expr_node1) );
310 args.push_back( maybeMoveBuild< Expression >(expr_node2) );
311 return new UntypedExpr( new NameExpr( OperName[ (int)op ] ), args );
312}
313
314Expression *build_cond( ExpressionNode *expr_node1, ExpressionNode *expr_node2, ExpressionNode *expr_node3 ) {
315 return new ConditionalExpr( notZeroExpr( maybeMoveBuild< Expression >(expr_node1) ), maybeMoveBuild< Expression >(expr_node2), maybeMoveBuild< Expression >(expr_node3) );
316}
317
318Expression *build_comma( ExpressionNode *expr_node1, ExpressionNode *expr_node2 ) {
319 return new CommaExpr( maybeMoveBuild< Expression >(expr_node1), maybeMoveBuild< Expression >(expr_node2) );
320}
321
322Expression *build_attrexpr( NameExpr *var, ExpressionNode * expr_node ) {
323 return new AttrExpr( var, maybeMoveBuild< Expression >(expr_node) );
324}
325Expression *build_attrtype( NameExpr *var, DeclarationNode * decl_node ) {
326 return new AttrExpr( var, maybeMoveBuildType( decl_node ) );
327}
328
329Expression *build_tuple( ExpressionNode * expr_node ) {
330 std::list< Expression * > exprs;
331 buildMoveList( expr_node, exprs );
332 return new UntypedTupleExpr( exprs );;
333}
334
335Expression *build_func( ExpressionNode * function, ExpressionNode * expr_node ) {
336 std::list< Expression * > args;
337 buildMoveList( expr_node, args );
338 return new UntypedExpr( maybeMoveBuild< Expression >(function), args, nullptr );
339}
340
341Expression *build_range( ExpressionNode * low, ExpressionNode *high ) {
342 return new RangeExpr( maybeMoveBuild< Expression >( low ), maybeMoveBuild< Expression >( high ) );
343}
344
345Expression *build_asmexpr( ExpressionNode *inout, ConstantExpr *constraint, ExpressionNode *operand ) {
346 return new AsmExpr( maybeMoveBuild< Expression >( inout ), constraint, maybeMoveBuild< Expression >(operand) );
347}
348
349Expression *build_valexpr( StatementNode *s ) {
350 return new StmtExpr( dynamic_cast< CompoundStmt * >(maybeMoveBuild< Statement >(s) ) );
351}
352Expression *build_typevalue( DeclarationNode *decl ) {
353 return new TypeExpr( maybeMoveBuildType( decl ) );
354}
355
356Expression *build_compoundLiteral( DeclarationNode *decl_node, InitializerNode *kids ) {
357 Declaration * newDecl = maybeBuild< Declaration >(decl_node); // compound literal type
358 if ( DeclarationWithType * newDeclWithType = dynamic_cast< DeclarationWithType * >( newDecl ) ) { // non-sue compound-literal type
359 return new CompoundLiteralExpr( newDeclWithType->get_type(), maybeMoveBuild< Initializer >(kids) );
360 // these types do not have associated type information
361 } else if ( StructDecl * newDeclStructDecl = dynamic_cast< StructDecl * >( newDecl ) ) {
362 if ( newDeclStructDecl->has_body() ) {
363 return new CompoundLiteralExpr( new StructInstType( Type::Qualifiers(), newDeclStructDecl ), maybeMoveBuild< Initializer >(kids) );
364 } else {
365 return new CompoundLiteralExpr( new StructInstType( Type::Qualifiers(), newDeclStructDecl->get_name() ), maybeMoveBuild< Initializer >(kids) );
366 } // if
367 } else if ( UnionDecl * newDeclUnionDecl = dynamic_cast< UnionDecl * >( newDecl ) ) {
368 if ( newDeclUnionDecl->has_body() ) {
369 return new CompoundLiteralExpr( new UnionInstType( Type::Qualifiers(), newDeclUnionDecl ), maybeMoveBuild< Initializer >(kids) );
370 } else {
371 return new CompoundLiteralExpr( new UnionInstType( Type::Qualifiers(), newDeclUnionDecl->get_name() ), maybeMoveBuild< Initializer >(kids) );
372 } // if
373 } else if ( EnumDecl * newDeclEnumDecl = dynamic_cast< EnumDecl * >( newDecl ) ) {
374 if ( newDeclEnumDecl->has_body() ) {
375 return new CompoundLiteralExpr( new EnumInstType( Type::Qualifiers(), newDeclEnumDecl ), maybeMoveBuild< Initializer >(kids) );
376 } else {
377 return new CompoundLiteralExpr( new EnumInstType( Type::Qualifiers(), newDeclEnumDecl->get_name() ), maybeMoveBuild< Initializer >(kids) );
378 } // if
379 } else {
380 assert( false );
381 } // if
382}
383
384// Local Variables: //
385// tab-width: 4 //
386// mode: c++ //
387// compile-command: "make install" //
388// End: //
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