source: src/Parser/ExpressionNode.cc@ e76acbe

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 e76acbe was a839867, checked in by Peter A. Buhr <pabuhr@…>, 9 years ago

add @= assignment operator
  • Property mode set to 100644
File size: 12.8 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 : Thu Aug 25 21:39:40 2016
13// Update Count : 503
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 "parseutility.h"
30#include "Common/utility.h"
31
32using namespace std;
33
34ExpressionNode::ExpressionNode( const ExpressionNode &other ) : ParseNode( other.get_name() ), extension( other.extension ) {}
35
36//##############################################################################
37
38// Difficult to separate extra parts of constants during lexing because actions are not allow in the middle of patterns:
39//
40// prefix action constant action suffix
41//
42// Alternatively, breaking a pattern using BEGIN does not work if the following pattern can be empty:
43//
44// constant BEGIN CONT ...
45// <CONT>(...)? BEGIN 0 ... // possible empty suffix
46//
47// because the CONT rule is NOT triggered if the pattern is empty. Hence, constants are reparsed here to determine their
48// type.
49
50static Type::Qualifiers emptyQualifiers; // no qualifiers on constants
51
52static inline bool checkU( char c ) { return c == 'u' || c == 'U'; }
53static inline bool checkL( char c ) { return c == 'l' || c == 'L'; }
54static inline bool checkF( char c ) { return c == 'f' || c == 'F'; }
55static inline bool checkD( char c ) { return c == 'd' || c == 'D'; }
56static inline bool checkI( char c ) { return c == 'i' || c == 'I'; }
57static inline bool checkX( char c ) { return c == 'x' || c == 'X'; }
58
59Expression *build_constantInteger( const std::string & str ) {
60 static const BasicType::Kind kind[2][3] = {
61 { BasicType::SignedInt, BasicType::LongSignedInt, BasicType::LongLongSignedInt },
62 { BasicType::UnsignedInt, BasicType::LongUnsignedInt, BasicType::LongLongUnsignedInt },
63 };
64 bool dec = true, Unsigned = false; // decimal, unsigned constant
65 int size; // 0 => int, 1 => long, 2 => long long
66 unsigned long long v; // converted integral value
67 size_t last = str.length() - 1; // last character of constant
68
69 if ( str[0] == '0' ) { // octal/hex constant ?
70 dec = false;
71 if ( last != 0 && checkX( str[1] ) ) { // hex constant ?
72 sscanf( (char *)str.c_str(), "%llx", &v );
73 //printf( "%llx %llu\n", v, v );
74 } else { // octal constant
75 sscanf( (char *)str.c_str(), "%llo", &v );
76 //printf( "%llo %llu\n", v, v );
77 } // if
78 } else { // decimal constant ?
79 sscanf( (char *)str.c_str(), "%llu", &v );
80 //printf( "%llu %llu\n", v, v );
81 } // if
82
83 if ( v <= INT_MAX ) { // signed int
84 size = 0;
85 } else if ( v <= UINT_MAX && ! dec ) { // unsigned int
86 size = 0;
87 Unsigned = true; // unsigned
88 } else if ( v <= LONG_MAX ) { // signed long int
89 size = 1;
90 } else if ( v <= ULONG_MAX && ( ! dec || LONG_MAX == LLONG_MAX ) ) { // signed long int
91 size = 1;
92 Unsigned = true; // unsigned long int
93 } else if ( v <= LLONG_MAX ) { // signed long long int
94 size = 2;
95 } else { // unsigned long long int
96 size = 2;
97 Unsigned = true; // unsigned long long int
98 } // if
99
100 if ( checkU( str[last] ) ) { // suffix 'u' ?
101 Unsigned = true;
102 if ( last > 0 && checkL( str[last - 1] ) ) { // suffix 'l' ?
103 size = 1;
104 if ( last > 1 && checkL( str[last - 2] ) ) { // suffix 'll' ?
105 size = 2;
106 } // if
107 } // if
108 } else if ( checkL( str[ last ] ) ) { // suffix 'l' ?
109 size = 1;
110 if ( last > 0 && checkL( str[last - 1] ) ) { // suffix 'll' ?
111 size = 2;
112 if ( last > 1 && checkU( str[last - 2] ) ) { // suffix 'u' ?
113 Unsigned = true;
114 } // if
115 } else {
116 if ( last > 0 && checkU( str[last - 1] ) ) { // suffix 'u' ?
117 Unsigned = true;
118 } // if
119 } // if
120 } // if
121
122 Expression * ret = new ConstantExpr( Constant( new BasicType( emptyQualifiers, kind[Unsigned][size] ), str ) );
123 delete &str; // created by lex
124 return ret;
125} // build_constantInteger
126
127Expression *build_constantFloat( const std::string & str ) {
128 static const BasicType::Kind kind[2][3] = {
129 { BasicType::Float, BasicType::Double, BasicType::LongDouble },
130 { BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex },
131 };
132
133 bool complx = false; // real, complex
134 int size = 1; // 0 => float, 1 => double (default), 2 => long double
135 // floating-point constant has minimum of 2 characters: 1. or .1
136 size_t last = str.length() - 1;
137
138 if ( checkI( str[last] ) ) { // imaginary ?
139 complx = true;
140 last -= 1; // backup one character
141 } // if
142
143 if ( checkF( str[last] ) ) { // float ?
144 size = 0;
145 } else if ( checkD( str[last] ) ) { // double ?
146 size = 1;
147 } else if ( checkL( str[last] ) ) { // long double ?
148 size = 2;
149 } // if
150 if ( ! complx && checkI( str[last - 1] ) ) { // imaginary ?
151 complx = true;
152 } // if
153
154 Expression * ret = new ConstantExpr( Constant( new BasicType( emptyQualifiers, kind[complx][size] ), str ) );
155 delete &str; // created by lex
156 return ret;
157} // build_constantFloat
158
159Expression *build_constantChar( const std::string & str ) {
160 Expression * ret = new ConstantExpr( Constant( new BasicType( emptyQualifiers, BasicType::Char ), str ) );
161 delete &str; // created by lex
162 return ret;
163} // build_constantChar
164
165ConstantExpr *build_constantStr( const std::string & str ) {
166 // string should probably be a primitive type
167 ArrayType *at = new ArrayType( emptyQualifiers, new BasicType( emptyQualifiers, BasicType::Char ),
168 new ConstantExpr( Constant( new BasicType( emptyQualifiers, BasicType::UnsignedInt ),
169 toString( str.size()+1-2 ) ) ), // +1 for '\0' and -2 for '"'
170 false, false );
171 ConstantExpr * ret = new ConstantExpr( Constant( at, str ) );
172 delete &str; // created by lex
173 return ret;
174} // build_constantStr
175
176NameExpr * build_varref( const string *name, bool labelp ) {
177 NameExpr *expr = new NameExpr( *name, nullptr );
178 delete name;
179 return expr;
180}
181
182static const char *OperName[] = {
183 // diadic
184 "SizeOf", "AlignOf", "OffsetOf", "?+?", "?-?", "?*?", "?/?", "?%?", "||", "&&",
185 "?|?", "?&?", "?^?", "Cast", "?<<?", "?>>?", "?<?", "?>?", "?<=?", "?>=?", "?==?", "?!=?",
186 "?=?", "?@=?", "?*=?", "?/=?", "?%=?", "?+=?", "?-=?", "?<<=?", "?>>=?", "?&=?", "?^=?", "?|=?",
187 "?[?]", "...",
188 // monadic
189 "+?", "-?", "AddressOf", "*?", "!?", "~?", "++?", "?++", "--?", "?--", "&&"
190};
191
192Expression *build_cast( DeclarationNode *decl_node, ExpressionNode *expr_node ) {
193 Type *targetType = maybeMoveBuildType( decl_node );
194 if ( dynamic_cast< VoidType * >( targetType ) ) {
195 delete targetType;
196 return new CastExpr( maybeMoveBuild< Expression >(expr_node) );
197 } else {
198 return new CastExpr( maybeMoveBuild< Expression >(expr_node), targetType );
199 } // if
200}
201
202Expression *build_fieldSel( ExpressionNode *expr_node, NameExpr *member ) {
203 UntypedMemberExpr *ret = new UntypedMemberExpr( member->get_name(), maybeMoveBuild< Expression >(expr_node) );
204 delete member;
205 return ret;
206}
207
208Expression *build_pfieldSel( ExpressionNode *expr_node, NameExpr *member ) {
209 UntypedExpr *deref = new UntypedExpr( new NameExpr( "*?" ) );
210 deref->get_args().push_back( maybeMoveBuild< Expression >(expr_node) );
211 UntypedMemberExpr *ret = new UntypedMemberExpr( member->get_name(), deref );
212 delete member;
213 return ret;
214}
215
216Expression *build_addressOf( ExpressionNode *expr_node ) {
217 return new AddressExpr( maybeMoveBuild< Expression >(expr_node) );
218}
219Expression *build_sizeOfexpr( ExpressionNode *expr_node ) {
220 return new SizeofExpr( maybeMoveBuild< Expression >(expr_node) );
221}
222Expression *build_sizeOftype( DeclarationNode *decl_node ) {
223 return new SizeofExpr( maybeMoveBuildType( decl_node ) );
224}
225Expression *build_alignOfexpr( ExpressionNode *expr_node ) {
226 return new AlignofExpr( maybeMoveBuild< Expression >(expr_node) );
227}
228Expression *build_alignOftype( DeclarationNode *decl_node ) {
229 return new AlignofExpr( maybeMoveBuildType( decl_node) );
230}
231Expression *build_offsetOf( DeclarationNode *decl_node, NameExpr *member ) {
232 Expression* ret = new UntypedOffsetofExpr( maybeMoveBuildType( decl_node ), member->get_name() );
233 delete member;
234 return ret;
235}
236
237Expression *build_and_or( ExpressionNode *expr_node1, ExpressionNode *expr_node2, bool kind ) {
238 return new LogicalExpr( notZeroExpr( maybeMoveBuild< Expression >(expr_node1) ), notZeroExpr( maybeMoveBuild< Expression >(expr_node2) ), kind );
239}
240
241Expression *build_unary_val( OperKinds op, ExpressionNode *expr_node ) {
242 std::list< Expression * > args;
243 args.push_back( maybeMoveBuild< Expression >(expr_node) );
244 return new UntypedExpr( new NameExpr( OperName[ (int)op ] ), args );
245}
246Expression *build_unary_ptr( OperKinds op, ExpressionNode *expr_node ) {
247 std::list< Expression * > args;
248 args.push_back( new AddressExpr( maybeMoveBuild< Expression >(expr_node) ) );
249 return new UntypedExpr( new NameExpr( OperName[ (int)op ] ), args );
250}
251Expression *build_binary_val( OperKinds op, ExpressionNode *expr_node1, ExpressionNode *expr_node2 ) {
252 std::list< Expression * > args;
253 args.push_back( maybeMoveBuild< Expression >(expr_node1) );
254 args.push_back( maybeMoveBuild< Expression >(expr_node2) );
255 return new UntypedExpr( new NameExpr( OperName[ (int)op ] ), args );
256}
257Expression *build_binary_ptr( OperKinds op, ExpressionNode *expr_node1, ExpressionNode *expr_node2 ) {
258 std::list< Expression * > args;
259 args.push_back( new AddressExpr( maybeMoveBuild< Expression >(expr_node1) ) );
260 args.push_back( maybeMoveBuild< Expression >(expr_node2) );
261 return new UntypedExpr( new NameExpr( OperName[ (int)op ] ), args );
262}
263
264Expression *build_cond( ExpressionNode *expr_node1, ExpressionNode *expr_node2, ExpressionNode *expr_node3 ) {
265 return new ConditionalExpr( notZeroExpr( maybeMoveBuild< Expression >(expr_node1) ), maybeMoveBuild< Expression >(expr_node2), maybeMoveBuild< Expression >(expr_node3) );
266}
267
268Expression *build_comma( ExpressionNode *expr_node1, ExpressionNode *expr_node2 ) {
269 return new CommaExpr( maybeMoveBuild< Expression >(expr_node1), maybeMoveBuild< Expression >(expr_node2) );
270}
271
272Expression *build_attrexpr( NameExpr *var, ExpressionNode * expr_node ) {
273 return new AttrExpr( var, maybeMoveBuild< Expression >(expr_node) );
274}
275Expression *build_attrtype( NameExpr *var, DeclarationNode * decl_node ) {
276 return new AttrExpr( var, maybeMoveBuildType( decl_node ) );
277}
278
279Expression *build_tuple( ExpressionNode * expr_node ) {
280 TupleExpr *ret = new TupleExpr();
281 buildMoveList( expr_node, ret->get_exprs() );
282 return ret;
283}
284
285Expression *build_func( ExpressionNode * function, ExpressionNode * expr_node ) {
286 std::list< Expression * > args;
287 buildMoveList( expr_node, args );
288 return new UntypedExpr( maybeMoveBuild< Expression >(function), args, nullptr );
289}
290
291Expression *build_range( ExpressionNode * low, ExpressionNode *high ) {
292 return new RangeExpr( maybeMoveBuild< Expression >( low ), maybeMoveBuild< Expression >( high ) );
293}
294
295Expression *build_asmexpr( ExpressionNode *inout, ConstantExpr *constraint, ExpressionNode *operand ) {
296 return new AsmExpr( maybeMoveBuild< Expression >( inout ), constraint, maybeMoveBuild< Expression >(operand) );
297}
298
299Expression *build_valexpr( StatementNode *s ) {
300 return new UntypedValofExpr( maybeMoveBuild< Statement >(s), nullptr );
301}
302Expression *build_typevalue( DeclarationNode *decl ) {
303 return new TypeExpr( maybeMoveBuildType( decl ) );
304}
305
306Expression *build_compoundLiteral( DeclarationNode *decl_node, InitializerNode *kids ) {
307 Declaration * newDecl = maybeBuild< Declaration >(decl_node); // compound literal type
308 if ( DeclarationWithType * newDeclWithType = dynamic_cast< DeclarationWithType * >( newDecl ) ) { // non-sue compound-literal type
309 return new CompoundLiteralExpr( newDeclWithType->get_type(), maybeMoveBuild< Initializer >(kids) );
310 // these types do not have associated type information
311 } else if ( StructDecl * newDeclStructDecl = dynamic_cast< StructDecl * >( newDecl ) ) {
312 return new CompoundLiteralExpr( new StructInstType( Type::Qualifiers(), newDeclStructDecl->get_name() ), maybeMoveBuild< Initializer >(kids) );
313 } else if ( UnionDecl * newDeclUnionDecl = dynamic_cast< UnionDecl * >( newDecl ) ) {
314 return new CompoundLiteralExpr( new UnionInstType( Type::Qualifiers(), newDeclUnionDecl->get_name() ), maybeMoveBuild< Initializer >(kids) );
315 } else if ( EnumDecl * newDeclEnumDecl = dynamic_cast< EnumDecl * >( newDecl ) ) {
316 return new CompoundLiteralExpr( new EnumInstType( Type::Qualifiers(), newDeclEnumDecl->get_name() ), maybeMoveBuild< Initializer >(kids) );
317 } else {
318 assert( false );
319 } // if
320}
321
322// Local Variables: //
323// tab-width: 4 //
324// mode: c++ //
325// compile-command: "make install" //
326// End: //
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