source: src/Parser/ExpressionNode.cc@ cd477ca

ADT ast-experimental
Last change on this file since cd477ca was 52a2248, checked in by Andrew Beach <ajbeach@…>, 3 years ago

This should get some of the Parser changes working on older compilers.
  • Property mode set to 100644
File size: 27.5 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 : Peter A. Buhr
10// Created On : Sat May 16 13:17:07 2015
11// Last Modified By : Andrew Beach
12// Last Modified On : Tue Mar 14 12:00:00 2023
13// Update Count : 1082
14//
15
16#include <cassert> // for assert
17#include <stdio.h> // for sscanf, size_t
18#include <climits> // for LLONG_MAX, LONG_MAX, INT_MAX, UINT...
19#include <list> // for list
20#include <sstream> // for basic_istream::operator>>, basic_i...
21#include <string> // for string, operator+, operator==
22
23#include "Common/SemanticError.h" // for SemanticError
24#include "Common/utility.h" // for maybeMoveBuild, maybeBuild, CodeLo...
25#include "ParseNode.h" // for ExpressionNode, maybeMoveBuildType
26#include "SynTree/Constant.h" // for Constant
27#include "SynTree/Declaration.h" // for EnumDecl, StructDecl, UnionDecl
28#include "SynTree/Expression.h" // for Expression, ConstantExpr, NameExpr
29#include "SynTree/Statement.h" // for CompoundStmt, Statement
30#include "SynTree/Type.h" // for BasicType, Type, Type::Qualifiers
31#include "parserutility.h" // for notZeroExpr
32
33class Initializer;
34
35using namespace std;
36
37//##############################################################################
38
39// Difficult to separate extra parts of constants during lexing because actions are not allow in the middle of patterns:
40//
41// prefix action constant action suffix
42//
43// Alternatively, breaking a pattern using BEGIN does not work if the following pattern can be empty:
44//
45// constant BEGIN CONT ...
46// <CONT>(...)? BEGIN 0 ... // possible empty suffix
47//
48// because the CONT rule is NOT triggered if the pattern is empty. Hence, constants are reparsed here to determine their
49// type.
50
51extern const Type::Qualifiers noQualifiers; // no qualifiers on constants
52
53// static inline bool checkH( char c ) { return c == 'h' || c == 'H'; }
54// static inline bool checkZ( char c ) { return c == 'z' || c == 'Z'; }
55// static inline bool checkU( char c ) { return c == 'u' || c == 'U'; }
56static inline bool checkF( char c ) { return c == 'f' || c == 'F'; }
57static inline bool checkD( char c ) { return c == 'd' || c == 'D'; }
58static inline bool checkF80( char c ) { return c == 'w' || c == 'W'; }
59static inline bool checkF128( char c ) { return c == 'q' || c == 'Q'; }
60static inline bool checkL( char c ) { return c == 'l' || c == 'L'; }
61static inline bool checkI( char c ) { return c == 'i' || c == 'I'; }
62static inline bool checkB( char c ) { return c == 'b' || c == 'B'; }
63static inline bool checkX( char c ) { return c == 'x' || c == 'X'; }
64// static inline bool checkN( char c ) { return c == 'n' || c == 'N'; }
65
66void lnthSuffix( string & str, int & type, int & ltype ) {
67 // 'u' can appear before or after length suffix
68 string::size_type posn = str.find_last_of( "lL" );
69
70 if ( posn == string::npos ) return; // no suffix
71 size_t end = str.length() - 1;
72 if ( posn == end ) { type = 3; return; } // no length after 'l' => long
73
74 string::size_type next = posn + 1; // advance to length
75 if ( str[next] == '3' ) { // 32
76 type = ltype = 2;
77 } else if ( str[next] == '6' ) { // 64
78 type = ltype = 3;
79 } else if ( str[next] == '8' ) { // 8
80 type = ltype = 1;
81 } else if ( str[next] == '1' ) {
82 if ( str[next + 1] == '6' ) { // 16
83 type = ltype = 0;
84 } else { // 128
85 type = 5; ltype = 6;
86 } // if
87 } // if
88
89 char fix = '\0';
90 if ( str[end] == 'u' || str[end] == 'U' ) fix = str[end]; // ends with 'uU' ?
91 str.erase( posn ); // remove length suffix and possibly uU
92 if ( type == 5 ) { // L128 does not need uU
93 end = str.length() - 1;
94 if ( str[end] == 'u' || str[end] == 'U' ) str.erase( end ); // ends with 'uU' ? remove
95 } else if ( fix != '\0' ) str += fix; // put 'uU' back if removed
96} // lnthSuffix
97
98void valueToType( unsigned long long int & v, bool dec, int & type, bool & Unsigned ) {
99 // use value to determine type
100 if ( v <= INT_MAX ) { // signed int
101 type = 2;
102 } else if ( v <= UINT_MAX && ! dec ) { // unsigned int
103 type = 2;
104 Unsigned = true; // unsigned
105 } else if ( v <= LONG_MAX ) { // signed long int
106 type = 3;
107 } else if ( v <= ULONG_MAX && ( ! dec || LONG_MAX == LLONG_MAX ) ) { // signed long int
108 type = 3;
109 Unsigned = true; // unsigned long int
110 } else if ( v <= LLONG_MAX ) { // signed long long int
111 type = 4;
112 } else { // unsigned long long int
113 type = 4;
114 Unsigned = true; // unsigned long long int
115 } // if
116} // valueToType
117
118static void scanbin( string & str, unsigned long long int & v ) {
119 v = 0;
120 size_t last = str.length() - 1; // last subscript of constant
121 for ( unsigned int i = 2;; ) { // ignore prefix
122 if ( str[i] == '1' ) v |= 1;
123 i += 1;
124 if ( i == last - 1 || (str[i] != '0' && str[i] != '1') ) break;
125 v <<= 1;
126 } // for
127} // scanbin
128
129Expression * build_constantInteger( string & str ) {
130 static const BasicType::Kind kind[2][6] = {
131 // short (h) must be before char (hh) because shorter type has the longer suffix
132 { BasicType::ShortSignedInt, BasicType::SignedChar, BasicType::SignedInt, BasicType::LongSignedInt, BasicType::LongLongSignedInt, /* BasicType::SignedInt128 */ BasicType::LongLongSignedInt, },
133 { BasicType::ShortUnsignedInt, BasicType::UnsignedChar, BasicType::UnsignedInt, BasicType::LongUnsignedInt, BasicType::LongLongUnsignedInt, /* BasicType::UnsignedInt128 */ BasicType::LongLongUnsignedInt, },
134 };
135
136 static const char * lnthsInt[2][6] = {
137 { "int16_t", "int8_t", "int32_t", "int64_t", "size_t", "uintptr_t", },
138 { "uint16_t", "uint8_t", "uint32_t", "uint64_t", "size_t", "uintptr_t", },
139 }; // lnthsInt
140
141 string str2( "0x0" );
142 unsigned long long int v, v2 = 0; // converted integral value
143 Expression * ret, * ret2;
144
145 int type = -1; // 0 => short, 1 => char, 2 => int, 3 => long int, 4 => long long int, 5 => int128
146 int ltype = -1; // 0 => 16 bits, 1 => 8 bits, 2 => 32 bits, 3 => 64 bits, 4 => size_t, 5 => intptr, 6 => pointer
147 bool dec = true, Unsigned = false; // decimal, unsigned constant
148
149 // special constants
150 if ( str == "0" ) {
151 ret = new ConstantExpr( Constant( (Type *)new ZeroType( noQualifiers ), str, (unsigned long long int)0 ) );
152 goto CLEANUP;
153 } // if
154 if ( str == "1" ) {
155 ret = new ConstantExpr( Constant( (Type *)new OneType( noQualifiers ), str, (unsigned long long int)1 ) );
156 goto CLEANUP;
157 } // if
158
159 // 'u' can appear before or after length suffix
160 if ( str.find_last_of( "uU" ) != string::npos ) Unsigned = true;
161
162 if ( isdigit( str[str.length() - 1] ) ) { // no suffix ?
163 lnthSuffix( str, type, ltype ); // could have length suffix
164 } else {
165 // At least one digit in integer constant, so safe to backup while looking for suffix.
166 // This declaration and the comma expressions in the conditions mimic
167 // the declare and check pattern allowed in later compiler versions.
168 // (Only some early compilers/C++ standards do not support it.)
169 string::size_type posn;
170 // pointer value
171 if ( posn = str.find_last_of( "pP" ), posn != string::npos ) {
172 ltype = 5; str.erase( posn, 1 );
173 // size_t
174 } else if ( posn = str.find_last_of( "zZ" ), posn != string::npos ) {
175 Unsigned = true; type = 2; ltype = 4; str.erase( posn, 1 );
176 // signed char
177 } else if ( posn = str.rfind( "hh" ), posn != string::npos ) {
178 type = 1; str.erase( posn, 2 );
179 // signed char
180 } else if ( posn = str.rfind( "HH" ), posn != string::npos ) {
181 type = 1; str.erase( posn, 2 );
182 // short
183 } else if ( posn = str.find_last_of( "hH" ), posn != string::npos ) {
184 type = 0; str.erase( posn, 1 );
185 // int (natural number)
186 } else if ( posn = str.find_last_of( "nN" ), posn != string::npos ) {
187 type = 2; str.erase( posn, 1 );
188 } else if ( str.rfind( "ll" ) != string::npos || str.rfind( "LL" ) != string::npos ) {
189 type = 4;
190 } else {
191 lnthSuffix( str, type, ltype );
192 } // if
193 } // if
194
195 // Cannot be just "0"/"1"; sscanf stops at the suffix, if any; value goes over the wall => always generate
196
197#if ! defined(__SIZEOF_INT128__)
198 if ( type == 5 ) SemanticError( yylloc, "int128 constant is not supported on this target " + str );
199#endif // ! __SIZEOF_INT128__
200
201 if ( str[0] == '0' ) { // radix character ?
202 dec = false;
203 if ( checkX( str[1] ) ) { // hex constant ?
204 if ( type < 5 ) { // not L128 ?
205 sscanf( (char *)str.c_str(), "%llx", &v );
206#if defined(__SIZEOF_INT128__)
207 } else { // hex int128 constant
208 unsigned int len = str.length();
209 if ( len > (2 + 16 + 16) ) SemanticError( yylloc, "128-bit hexadecimal constant to large " + str );
210 // hex digits < 2^64
211 if ( len > (2 + 16) ) {
212 str2 = "0x" + str.substr( len - 16 );
213 sscanf( (char *)str2.c_str(), "%llx", &v2 );
214 str = str.substr( 0, len - 16 );
215 } // if
216 sscanf( (char *)str.c_str(), "%llx", &v );
217#endif // __SIZEOF_INT128__
218 } // if
219 //printf( "%llx %llu\n", v, v );
220 } else if ( checkB( str[1] ) ) { // binary constant ?
221#if defined(__SIZEOF_INT128__)
222 unsigned int len = str.length();
223 if ( type == 5 && len > 2 + 64 ) {
224 if ( len > 2 + 64 + 64 ) SemanticError( yylloc, "128-bit binary constant to large " + str );
225 str2 = "0b" + str.substr( len - 64 );
226 str = str.substr( 0, len - 64 );
227 scanbin( str2, v2 );
228 } // if
229#endif // __SIZEOF_INT128__
230 scanbin( str, v );
231 //printf( "%#llx %llu\n", v, v );
232 } else { // octal constant
233 if ( type < 5 ) { // not L128 ?
234 sscanf( (char *)str.c_str(), "%llo", &v );
235#if defined(__SIZEOF_INT128__)
236 } else { // octal int128 constant
237 unsigned int len = str.length();
238 if ( len > 1 + 43 || (len == 1 + 43 && str[0] > '3') ) SemanticError( yylloc, "128-bit octal constant to large " + str );
239 char buf[32];
240 if ( len <= 1 + 21 ) { // value < 21 octal digitis
241 sscanf( (char *)str.c_str(), "%llo", &v );
242 } else {
243 sscanf( &str[len - 21], "%llo", &v );
244 __int128 val = v; // accumulate bits
245 str[len - 21] ='\0'; // shorten string
246 sscanf( &str[len == 43 ? 1 : 0], "%llo", &v );
247 val |= (__int128)v << 63; // store bits
248 if ( len == 1 + 43 ) { // most significant 2 bits ?
249 str[2] = '\0'; // shorten string
250 sscanf( &str[1], "%llo", &v ); // process most significant 2 bits
251 val |= (__int128)v << 126; // store bits
252 } // if
253 v = val >> 64; v2 = (uint64_t)val; // replace octal constant with 2 hex constants
254 sprintf( buf, "%#llx", v2 );
255 str2 = buf;
256 } // if
257 sprintf( buf, "%#llx", v );
258 str = buf;
259#endif // __SIZEOF_INT128__
260 } // if
261 //printf( "%#llo %llu\n", v, v );
262 } // if
263 } else { // decimal constant ?
264 if ( type < 5 ) { // not L128 ?
265 sscanf( (char *)str.c_str(), "%llu", &v );
266#if defined(__SIZEOF_INT128__)
267 } else { // decimal int128 constant
268 #define P10_UINT64 10'000'000'000'000'000'000ULL // 19 zeroes
269 unsigned int len = str.length();
270 if ( str.length() == 39 && str > (Unsigned ? "340282366920938463463374607431768211455" : "170141183460469231731687303715884105727") )
271 SemanticError( yylloc, "128-bit decimal constant to large " + str );
272 char buf[32];
273 if ( len <= 19 ) { // value < 19 decimal digitis
274 sscanf( (char *)str.c_str(), "%llu", &v );
275 } else {
276 sscanf( &str[len - 19], "%llu", &v );
277 __int128 val = v; // accumulate bits
278 str[len - 19] ='\0'; // shorten string
279 sscanf( &str[len == 39 ? 1 : 0], "%llu", &v );
280 val += (__int128)v * (__int128)P10_UINT64; // store bits
281 if ( len == 39 ) { // most significant 2 bits ?
282 str[1] = '\0'; // shorten string
283 sscanf( &str[0], "%llu", &v ); // process most significant 2 bits
284 val += (__int128)v * (__int128)P10_UINT64 * (__int128)P10_UINT64; // store bits
285 } // if
286 v = val >> 64; v2 = (uint64_t)val; // replace decimal constant with 2 hex constants
287 sprintf( buf, "%#llx", v2 );
288 str2 = buf;
289 } // if
290 sprintf( buf, "%#llx", v );
291 str = buf;
292#endif // __SIZEOF_INT128__
293 } // if
294 //printf( "%llu\n", v );
295 } // if
296
297 if ( type == -1 ) { // no suffix => determine type from value size
298 valueToType( v, dec, type, Unsigned );
299 } // if
300 /* printf( "%s %llo %s %llo\n", str.c_str(), v, str2.c_str(), v2 ); */
301
302 //if ( !( 0 <= type && type <= 6 ) ) { printf( "%s %lu %d %s\n", fred.c_str(), fred.length(), type, str.c_str() ); }
303 assert( 0 <= type && type <= 6 );
304
305 // Constant type is correct for overload resolving.
306 ret = new ConstantExpr( Constant( new BasicType( noQualifiers, kind[Unsigned][type] ), str, v ) );
307 if ( Unsigned && type < 2 ) { // hh or h, less than int ?
308 // int i = -1uh => 65535 not -1, so cast is necessary for unsigned, which unfortunately eliminates warnings for large values.
309 ret = new CastExpr( ret, new BasicType( Type::Qualifiers(), kind[Unsigned][type] ), false );
310 } else if ( ltype != -1 ) { // explicit length ?
311 if ( ltype == 6 ) { // int128, (int128)constant
312// ret = new CastExpr( ret, new BasicType( Type::Qualifiers(), kind[Unsigned][type] ), false );
313 ret2 = new ConstantExpr( Constant( new BasicType( noQualifiers, BasicType::LongLongSignedInt ), str2, v2 ) );
314 ret = build_compoundLiteral(
315 DeclarationNode::newBasicType( DeclarationNode::Int128 )->addType( DeclarationNode::newSignedNess( DeclarationNode::Unsigned ) ),
316 new InitializerNode( (InitializerNode *)(new InitializerNode( new ExpressionNode( v2 == 0 ? ret2 : ret ) ))->set_last( new InitializerNode( new ExpressionNode( v2 == 0 ? ret : ret2 ) ) ), true ) );
317 } else { // explicit length, (length_type)constant
318 ret = new CastExpr( ret, new TypeInstType( Type::Qualifiers(), lnthsInt[Unsigned][ltype], false ), false );
319 if ( ltype == 5 ) { // pointer, intptr( (uintptr_t)constant )
320 ret = build_func( new ExpressionNode( build_varref( new string( "intptr" ) ) ), new ExpressionNode( ret ) );
321 } // if
322 } // if
323 } // if
324
325 CLEANUP: ;
326 delete &str; // created by lex
327 return ret;
328} // build_constantInteger
329
330
331static inline void checkFnxFloat( string & str, size_t last, bool & explnth, int & type ) {
332 string::size_type posn;
333 // floating-point constant has minimum of 2 characters, 1. or .1, so safe to look ahead
334 if ( str[1] == 'x' ) { // hex ?
335 posn = str.find_last_of( "pP" ); // back for exponent (must have)
336 posn = str.find_first_of( "fF", posn + 1 ); // forward for size (fF allowed in hex constant)
337 } else {
338 posn = str.find_last_of( "fF" ); // back for size (fF not allowed)
339 } // if
340 if ( posn == string::npos ) return;
341 explnth = true;
342 posn += 1; // advance to size
343 if ( str[posn] == '3' ) { // 32
344 if ( str[last] != 'x' ) type = 6;
345 else type = 7;
346 } else if ( str[posn] == '6' ) { // 64
347 if ( str[last] != 'x' ) type = 8;
348 else type = 9;
349 } else if ( str[posn] == '8' ) { // 80
350 type = 3;
351 } else if ( str[posn] == '1' ) { // 16/128
352 if ( str[posn + 1] == '6' ) { // 16
353 type = 5;
354 } else { // 128
355 if ( str[last] != 'x' ) type = 10;
356 else type = 11;
357 } // if
358 } else {
359 assertf( false, "internal error, bad floating point length %s", str.c_str() );
360 } // if
361} // checkFnxFloat
362
363
364Expression * build_constantFloat( string & str ) {
365 static const BasicType::Kind kind[2][12] = {
366 { BasicType::Float, BasicType::Double, BasicType::LongDouble, BasicType::uuFloat80, BasicType::uuFloat128, BasicType::uFloat16, BasicType::uFloat32, BasicType::uFloat32x, BasicType::uFloat64, BasicType::uFloat64x, BasicType::uFloat128, BasicType::uFloat128x },
367 { BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex, BasicType::NUMBER_OF_BASIC_TYPES, BasicType::NUMBER_OF_BASIC_TYPES, BasicType::uFloat16Complex, BasicType::uFloat32Complex, BasicType::uFloat32xComplex, BasicType::uFloat64Complex, BasicType::uFloat64xComplex, BasicType::uFloat128Complex, BasicType::uFloat128xComplex },
368 };
369
370 // floating-point constant has minimum of 2 characters 1. or .1
371 size_t last = str.length() - 1;
372 double v;
373 int type; // 0 => float, 1 => double, 3 => long double, ...
374 bool complx = false; // real, complex
375 bool explnth = false; // explicit literal length
376
377 sscanf( str.c_str(), "%lg", &v );
378
379 if ( checkI( str[last] ) ) { // imaginary ?
380 complx = true;
381 last -= 1; // backup one character
382 } // if
383
384 if ( checkF( str[last] ) ) { // float ?
385 type = 0;
386 } else if ( checkD( str[last] ) ) { // double ?
387 type = 1;
388 } else if ( checkL( str[last] ) ) { // long double ?
389 type = 2;
390 } else if ( checkF80( str[last] ) ) { // __float80 ?
391 type = 3;
392 } else if ( checkF128( str[last] ) ) { // __float128 ?
393 type = 4;
394 } else {
395 type = 1; // double (default if no suffix)
396 checkFnxFloat( str, last, explnth, type );
397 } // if
398
399 if ( ! complx && checkI( str[last - 1] ) ) { // imaginary ?
400 complx = true;
401 } // if
402
403 assert( 0 <= type && type < 12 );
404 Expression * ret = new ConstantExpr( Constant( new BasicType( noQualifiers, kind[complx][type] ), str, v ) );
405 if ( explnth ) { // explicit length ?
406 ret = new CastExpr( ret, new BasicType( Type::Qualifiers(), kind[complx][type] ), false );
407 } // if
408
409 delete &str; // created by lex
410 return ret;
411} // build_constantFloat
412
413static void sepString( string & str, string & units, char delimit ) {
414 string::size_type posn = str.find_last_of( delimit ) + 1;
415 if ( posn != str.length() ) {
416 units = "?" + str.substr( posn ); // extract units
417 str.erase( posn ); // remove units
418 } // if
419} // sepString
420
421Expression * build_constantChar( string & str ) {
422 string units; // units
423 sepString( str, units, '\'' ); // separate constant from units
424
425 Expression * ret = new ConstantExpr( Constant( new BasicType( noQualifiers, BasicType::Char ), str, (unsigned long long int)(unsigned char)str[1] ) );
426 if ( units.length() != 0 ) {
427 ret = new UntypedExpr( new NameExpr( units ), { ret } );
428 } // if
429
430 delete &str; // created by lex
431 return ret;
432} // build_constantChar
433
434Expression * build_constantStr( string & str ) {
435 assert( str.length() > 0 );
436 string units; // units
437 sepString( str, units, '"' ); // separate constant from units
438
439 Type * strtype;
440 switch ( str[0] ) { // str has >= 2 characters, i.e, null string "" => safe to look at subscripts 0/1
441 case 'u':
442 if ( str[1] == '8' ) goto Default; // utf-8 characters => array of char
443 // lookup type of associated typedef
444 strtype = new TypeInstType( Type::Qualifiers( ), "char16_t", false );
445 break;
446 case 'U':
447 strtype = new TypeInstType( Type::Qualifiers( ), "char32_t", false );
448 break;
449 case 'L':
450 strtype = new TypeInstType( Type::Qualifiers( ), "wchar_t", false );
451 break;
452 Default: // char default string type
453 default:
454 strtype = new BasicType( Type::Qualifiers( ), BasicType::Char );
455 } // switch
456 ArrayType * at = new ArrayType( noQualifiers, strtype,
457 new ConstantExpr( Constant::from_ulong( str.size() + 1 - 2 ) ), // +1 for '\0' and -2 for '"'
458 false, false );
459 Expression * ret = new ConstantExpr( Constant( at, str, std::nullopt ) );
460 if ( units.length() != 0 ) {
461 ret = new UntypedExpr( new NameExpr( units ), { ret } );
462 } // if
463
464 delete &str; // created by lex
465 return ret;
466} // build_constantStr
467
468Expression * build_field_name_FLOATING_FRACTIONconstant( const string & str ) {
469 if ( str.find_first_not_of( "0123456789", 1 ) != string::npos ) SemanticError( yylloc, "invalid tuple index " + str );
470 Expression * ret = build_constantInteger( *new string( str.substr(1) ) );
471 delete &str;
472 return ret;
473} // build_field_name_FLOATING_FRACTIONconstant
474
475Expression * build_field_name_FLOATING_DECIMALconstant( const string & str ) {
476 if ( str[str.size() - 1] != '.' ) SemanticError( yylloc, "invalid tuple index " + str );
477 Expression * ret = build_constantInteger( *new string( str.substr( 0, str.size()-1 ) ) );
478 delete &str;
479 return ret;
480} // build_field_name_FLOATING_DECIMALconstant
481
482Expression * build_field_name_FLOATINGconstant( const string & str ) {
483 // str is of the form A.B -> separate at the . and return member expression
484 int a, b;
485 char dot;
486 stringstream ss( str );
487 ss >> a >> dot >> b;
488 UntypedMemberExpr * ret = new UntypedMemberExpr( new ConstantExpr( Constant::from_int( b ) ), new ConstantExpr( Constant::from_int( a ) ) );
489 delete &str;
490 return ret;
491} // build_field_name_FLOATINGconstant
492
493Expression * make_field_name_fraction_constants( Expression * fieldName, Expression * fracts ) {
494 if ( fracts ) {
495 if ( UntypedMemberExpr * memberExpr = dynamic_cast< UntypedMemberExpr * >( fracts ) ) {
496 memberExpr->set_member( make_field_name_fraction_constants( fieldName, memberExpr->get_aggregate() ) );
497 return memberExpr;
498 } else {
499 return new UntypedMemberExpr( fracts, fieldName );
500 } // if
501 } // if
502 return fieldName;
503} // make_field_name_fraction_constants
504
505Expression * build_field_name_fraction_constants( Expression * fieldName, ExpressionNode * fracts ) {
506 return make_field_name_fraction_constants( fieldName, maybeMoveBuild( fracts ) );
507} // build_field_name_fraction_constants
508
509NameExpr * build_varref( const string * name ) {
510 NameExpr * expr = new NameExpr( *name );
511 delete name;
512 return expr;
513} // build_varref
514
515QualifiedNameExpr * build_qualified_expr( const DeclarationNode * decl_node, const NameExpr * name ) {
516 Declaration * newDecl = maybeBuild(decl_node);
517 if ( DeclarationWithType * newDeclWithType = dynamic_cast< DeclarationWithType * >( newDecl ) ) {
518 const Type * t = newDeclWithType->get_type();
519 if ( t ) {
520 if ( const TypeInstType * typeInst = dynamic_cast<const TypeInstType *>( t ) ) {
521 newDecl= new EnumDecl( typeInst->name );
522 }
523 }
524 }
525 return new QualifiedNameExpr( newDecl, name->name );
526}
527
528QualifiedNameExpr * build_qualified_expr( const EnumDecl * decl_node, const NameExpr * name ) {
529 EnumDecl * newDecl = const_cast< EnumDecl * >( decl_node );
530 return new QualifiedNameExpr( newDecl, name->name );
531}
532
533DimensionExpr * build_dimensionref( const string * name ) {
534 DimensionExpr * expr = new DimensionExpr( *name );
535 delete name;
536 return expr;
537} // build_varref
538
539// TODO: get rid of this and OperKinds and reuse code from OperatorTable
540static const char * OperName[] = { // must harmonize with OperKinds
541 // diadic
542 "SizeOf", "AlignOf", "OffsetOf", "?+?", "?-?", "?\\?", "?*?", "?/?", "?%?", "||", "&&",
543 "?|?", "?&?", "?^?", "Cast", "?<<?", "?>>?", "?<?", "?>?", "?<=?", "?>=?", "?==?", "?!=?",
544 "?=?", "?@=?", "?\\=?", "?*=?", "?/=?", "?%=?", "?+=?", "?-=?", "?<<=?", "?>>=?", "?&=?", "?^=?", "?|=?",
545 "?[?]", "...",
546 // monadic
547 "+?", "-?", "AddressOf", "*?", "!?", "~?", "++?", "?++", "--?", "?--",
548}; // OperName
549
550Expression * build_cast( DeclarationNode * decl_node, ExpressionNode * expr_node ) {
551 Type * targetType = maybeMoveBuildType( decl_node );
552 if ( dynamic_cast< VoidType * >( targetType ) ) {
553 delete targetType;
554 return new CastExpr( maybeMoveBuild( expr_node ), false );
555 } else {
556 return new CastExpr( maybeMoveBuild( expr_node ), targetType, false );
557 } // if
558} // build_cast
559
560Expression * build_keyword_cast( AggregateDecl::Aggregate target, ExpressionNode * expr_node ) {
561 return new KeywordCastExpr( maybeMoveBuild( expr_node ), target );
562}
563
564Expression * build_virtual_cast( DeclarationNode * decl_node, ExpressionNode * expr_node ) {
565 return new VirtualCastExpr( maybeMoveBuild( expr_node ), maybeMoveBuildType( decl_node ) );
566} // build_virtual_cast
567
568Expression * build_fieldSel( ExpressionNode * expr_node, Expression * member ) {
569 return new UntypedMemberExpr( member, maybeMoveBuild( expr_node ) );
570} // build_fieldSel
571
572Expression * build_pfieldSel( ExpressionNode * expr_node, Expression * member ) {
573 UntypedExpr * deref = new UntypedExpr( new NameExpr( "*?" ) );
574 deref->location = expr_node->location;
575 deref->get_args().push_back( maybeMoveBuild( expr_node ) );
576 UntypedMemberExpr * ret = new UntypedMemberExpr( member, deref );
577 return ret;
578} // build_pfieldSel
579
580Expression * build_offsetOf( DeclarationNode * decl_node, NameExpr * member ) {
581 Expression * ret = new UntypedOffsetofExpr( maybeMoveBuildType( decl_node ), member->get_name() );
582 delete member;
583 return ret;
584} // build_offsetOf
585
586Expression * build_and_or( ExpressionNode * expr_node1, ExpressionNode * expr_node2, bool kind ) {
587 return new LogicalExpr( notZeroExpr( maybeMoveBuild( expr_node1 ) ), notZeroExpr( maybeMoveBuild( expr_node2 ) ), kind );
588} // build_and_or
589
590Expression * build_unary_val( OperKinds op, ExpressionNode * expr_node ) {
591 list< Expression * > args;
592 args.push_back( maybeMoveBuild( expr_node ) );
593 return new UntypedExpr( new NameExpr( OperName[ (int)op ] ), args );
594} // build_unary_val
595
596Expression * build_binary_val( OperKinds op, ExpressionNode * expr_node1, ExpressionNode * expr_node2 ) {
597 list< Expression * > args;
598 args.push_back( maybeMoveBuild( expr_node1 ) );
599 args.push_back( maybeMoveBuild( expr_node2 ) );
600 return new UntypedExpr( new NameExpr( OperName[ (int)op ] ), args );
601} // build_binary_val
602
603Expression * build_binary_ptr( OperKinds op, ExpressionNode * expr_node1, ExpressionNode * expr_node2 ) {
604 list< Expression * > args;
605 args.push_back( maybeMoveBuild( expr_node1 ) );
606 args.push_back( maybeMoveBuild( expr_node2 ) );
607 return new UntypedExpr( new NameExpr( OperName[ (int)op ] ), args );
608} // build_binary_ptr
609
610Expression * build_cond( ExpressionNode * expr_node1, ExpressionNode * expr_node2, ExpressionNode * expr_node3 ) {
611 return new ConditionalExpr( notZeroExpr( maybeMoveBuild( expr_node1 ) ), maybeMoveBuild( expr_node2 ), maybeMoveBuild( expr_node3 ) );
612} // build_cond
613
614Expression * build_tuple( ExpressionNode * expr_node ) {
615 list< Expression * > exprs;
616 buildMoveList( expr_node, exprs );
617 return new UntypedTupleExpr( exprs );;
618} // build_tuple
619
620Expression * build_func( ExpressionNode * function, ExpressionNode * expr_node ) {
621 list< Expression * > args;
622 buildMoveList( expr_node, args );
623 return new UntypedExpr( maybeMoveBuild( function ), args );
624} // build_func
625
626Expression * build_compoundLiteral( DeclarationNode * decl_node, InitializerNode * kids ) {
627 Declaration * newDecl = maybeBuild( decl_node ); // compound literal type
628 if ( DeclarationWithType * newDeclWithType = dynamic_cast< DeclarationWithType * >( newDecl ) ) { // non-sue compound-literal type
629 return new CompoundLiteralExpr( newDeclWithType->get_type(), maybeMoveBuild( kids ) );
630 // these types do not have associated type information
631 } else if ( StructDecl * newDeclStructDecl = dynamic_cast< StructDecl * >( newDecl ) ) {
632 if ( newDeclStructDecl->has_body() ) {
633 return new CompoundLiteralExpr( new StructInstType( Type::Qualifiers(), newDeclStructDecl ), maybeMoveBuild( kids ) );
634 } else {
635 return new CompoundLiteralExpr( new StructInstType( Type::Qualifiers(), newDeclStructDecl->get_name() ), maybeMoveBuild( kids ) );
636 } // if
637 } else if ( UnionDecl * newDeclUnionDecl = dynamic_cast< UnionDecl * >( newDecl ) ) {
638 if ( newDeclUnionDecl->has_body() ) {
639 return new CompoundLiteralExpr( new UnionInstType( Type::Qualifiers(), newDeclUnionDecl ), maybeMoveBuild( kids ) );
640 } else {
641 return new CompoundLiteralExpr( new UnionInstType( Type::Qualifiers(), newDeclUnionDecl->get_name() ), maybeMoveBuild( kids ) );
642 } // if
643 } else if ( EnumDecl * newDeclEnumDecl = dynamic_cast< EnumDecl * >( newDecl ) ) {
644 if ( newDeclEnumDecl->has_body() ) {
645 return new CompoundLiteralExpr( new EnumInstType( Type::Qualifiers(), newDeclEnumDecl ), maybeMoveBuild( kids ) );
646 } else {
647 return new CompoundLiteralExpr( new EnumInstType( Type::Qualifiers(), newDeclEnumDecl->get_name() ), maybeMoveBuild( kids ) );
648 } // if
649 } else {
650 assert( false );
651 } // if
652} // build_compoundLiteral
653
654// Local Variables: //
655// tab-width: 4 //
656// End: //
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