| 1 | //
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| 2 | // Cforall Version 1.0.0 Copyright (C) 2015 University of Waterloo
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| 3 | //
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| 4 | // The contents of this file are covered under the licence agreement in the
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| 5 | // file "LICENCE" distributed with Cforall.
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| 6 | //
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| 7 | // ExpressionNode.cc --
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| 8 | //
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| 9 | // Author : Peter A. Buhr
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| 10 | // Created On : Sat May 16 13:17:07 2015
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| 11 | // Last Modified By : Peter A. Buhr
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| 12 | // Last Modified On : Thu Dec 14 18:57:07 2023
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| 13 | // Update Count : 1087
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| 14 | //
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| 15 |
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| 16 | #include "ExpressionNode.h"
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| 17 |
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| 18 | #include <cassert> // for assert
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| 19 | #include <stdio.h> // for sscanf, size_t
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| 20 | #include <climits> // for LLONG_MAX, LONG_MAX, INT_MAX, UINT...
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| 21 | #include <list> // for list
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| 22 | #include <sstream> // for basic_istream::operator>>, basic_i...
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| 23 | #include <string> // for string, operator+, operator==
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| 24 |
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| 25 | #include "AST/Expr.hpp" // for NameExpr
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| 26 | #include "AST/Type.hpp" // for BaseType, SueInstType
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| 27 | #include "Common/SemanticError.h" // for SemanticError
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| 28 | #include "Common/utility.h" // for maybeMoveBuild, maybeBuild, CodeLo...
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| 29 | #include "DeclarationNode.h" // for DeclarationNode
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| 30 | #include "InitializerNode.h" // for InitializerNode
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| 31 | #include "TypeData.h" // for addType, build_basic_type, build_c...
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| 32 | #include "parserutility.h" // for notZeroExpr
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| 33 |
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| 34 | using namespace std;
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| 35 |
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| 36 | //##############################################################################
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| 37 |
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| 38 | // Difficult to separate extra parts of constants during lexing because actions are not allow in the middle of patterns:
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| 39 | //
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| 40 | // prefix action constant action suffix
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| 41 | //
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| 42 | // Alternatively, breaking a pattern using BEGIN does not work if the following pattern can be empty:
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| 43 | //
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| 44 | // constant BEGIN CONT ...
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| 45 | // <CONT>(...)? BEGIN 0 ... // possible empty suffix
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| 46 | //
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| 47 | // because the CONT rule is NOT triggered if the pattern is empty. Hence, constants are reparsed here to determine their
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| 48 | // type.
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| 49 |
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| 50 | // static inline bool checkH( char c ) { return c == 'h' || c == 'H'; }
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| 51 | // static inline bool checkZ( char c ) { return c == 'z' || c == 'Z'; }
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| 52 | // static inline bool checkU( char c ) { return c == 'u' || c == 'U'; }
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| 53 | static inline bool checkF( char c ) { return c == 'f' || c == 'F'; }
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| 54 | static inline bool checkD( char c ) { return c == 'd' || c == 'D'; }
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| 55 | static inline bool checkF80( char c ) { return c == 'w' || c == 'W'; }
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| 56 | static inline bool checkF128( char c ) { return c == 'q' || c == 'Q'; }
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| 57 | static inline bool checkL( char c ) { return c == 'l' || c == 'L'; }
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| 58 | static inline bool checkI( char c ) { return c == 'i' || c == 'I'; }
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| 59 | static inline bool checkB( char c ) { return c == 'b' || c == 'B'; }
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| 60 | static inline bool checkX( char c ) { return c == 'x' || c == 'X'; }
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| 61 | // static inline bool checkN( char c ) { return c == 'n' || c == 'N'; }
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| 62 |
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| 63 | void lnthSuffix( string & str, int & type, int & ltype ) {
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| 64 | // 'u' can appear before or after length suffix
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| 65 | string::size_type posn = str.find_last_of( "lL" );
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| 66 |
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| 67 | if ( posn == string::npos ) return; // no suffix
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| 68 | size_t end = str.length() - 1;
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| 69 | if ( posn == end ) { type = 3; return; } // no length after 'l' => long
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| 70 |
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| 71 | string::size_type next = posn + 1; // advance to length
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| 72 | if ( str[next] == '3' ) { // 32
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| 73 | type = ltype = 2;
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| 74 | } else if ( str[next] == '6' ) { // 64
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| 75 | type = ltype = 3;
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| 76 | } else if ( str[next] == '8' ) { // 8
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| 77 | type = ltype = 1;
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| 78 | } else if ( str[next] == '1' ) {
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| 79 | if ( str[next + 1] == '6' ) { // 16
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| 80 | type = ltype = 0;
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| 81 | } else { // 128
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| 82 | type = 5; ltype = 6;
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| 83 | } // if
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| 84 | } // if
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| 85 |
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| 86 | char fix = '\0';
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| 87 | if ( str[end] == 'u' || str[end] == 'U' ) fix = str[end]; // ends with 'uU' ?
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| 88 | str.erase( posn ); // remove length suffix and possibly uU
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| 89 | if ( type == 5 ) { // L128 does not need uU
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| 90 | end = str.length() - 1;
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| 91 | if ( str[end] == 'u' || str[end] == 'U' ) str.erase( end ); // ends with 'uU' ? remove
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| 92 | } else if ( fix != '\0' ) str += fix; // put 'uU' back if removed
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| 93 | } // lnthSuffix
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| 94 |
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| 95 | void valueToType( unsigned long long int & v, bool dec, int & type, bool & Unsigned ) {
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| 96 | // use value to determine type
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| 97 | if ( v <= INT_MAX ) { // signed int
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| 98 | type = 2;
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| 99 | } else if ( v <= UINT_MAX && ! dec ) { // unsigned int
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| 100 | type = 2;
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| 101 | Unsigned = true; // unsigned
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| 102 | } else if ( v <= LONG_MAX ) { // signed long int
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| 103 | type = 3;
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| 104 | } else if ( v <= ULONG_MAX && ( ! dec || LONG_MAX == LLONG_MAX ) ) { // signed long int
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| 105 | type = 3;
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| 106 | Unsigned = true; // unsigned long int
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| 107 | } else if ( v <= LLONG_MAX ) { // signed long long int
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| 108 | type = 4;
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| 109 | } else { // unsigned long long int
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| 110 | type = 4;
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| 111 | Unsigned = true; // unsigned long long int
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| 112 | } // if
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| 113 | } // valueToType
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| 114 |
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| 115 | static void scanbin( string & str, unsigned long long int & v ) {
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| 116 | v = 0;
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| 117 | size_t last = str.length() - 1; // last subscript of constant
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| 118 | for ( unsigned int i = 2;; ) { // ignore prefix
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| 119 | if ( str[i] == '1' ) v |= 1;
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| 120 | i += 1;
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| 121 | if ( i == last - 1 || (str[i] != '0' && str[i] != '1') ) break;
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| 122 | v <<= 1;
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| 123 | } // for
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| 124 | } // scanbin
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| 125 |
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| 126 | ast::Expr * build_constantInteger(
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| 127 | const CodeLocation & location, string & str ) {
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| 128 | static const ast::BasicType::Kind kind[2][6] = {
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| 129 | // short (h) must be before char (hh) because shorter type has the longer suffix
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| 130 | { ast::BasicType::ShortSignedInt, ast::BasicType::SignedChar, ast::BasicType::SignedInt, ast::BasicType::LongSignedInt, ast::BasicType::LongLongSignedInt, /* BasicType::SignedInt128 */ ast::BasicType::LongLongSignedInt, },
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| 131 | { ast::BasicType::ShortUnsignedInt, ast::BasicType::UnsignedChar, ast::BasicType::UnsignedInt, ast::BasicType::LongUnsignedInt, ast::BasicType::LongLongUnsignedInt, /* BasicType::UnsignedInt128 */ ast::BasicType::LongLongUnsignedInt, },
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| 132 | };
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| 133 |
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| 134 | static const char * lnthsInt[2][6] = {
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| 135 | { "int16_t", "int8_t", "int32_t", "int64_t", "size_t", "uintptr_t", },
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| 136 | { "uint16_t", "uint8_t", "uint32_t", "uint64_t", "size_t", "uintptr_t", },
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| 137 | }; // lnthsInt
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| 138 |
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| 139 | string str2( "0x0" );
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| 140 | unsigned long long int v, v2 = 0; // converted integral value
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| 141 | ast::Expr * ret, * ret2;
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| 142 |
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| 143 | int type = -1; // 0 => short, 1 => char, 2 => int, 3 => long int, 4 => long long int, 5 => int128
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| 144 | int ltype = -1; // 0 => 16 bits, 1 => 8 bits, 2 => 32 bits, 3 => 64 bits, 4 => size_t, 5 => intptr, 6 => pointer
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| 145 | bool dec = true, Unsigned = false; // decimal, unsigned constant
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| 146 |
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| 147 | // special constants
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| 148 | if ( str == "0" ) {
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| 149 | ret = new ast::ConstantExpr( location, new ast::ZeroType(), str, 0 );
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| 150 | goto CLEANUP;
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| 151 | } // if
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| 152 | if ( str == "1" ) {
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| 153 | ret = new ast::ConstantExpr( location, new ast::OneType(), str, 1 );
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| 154 | goto CLEANUP;
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| 155 | } // if
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| 156 |
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| 157 | // 'u' can appear before or after length suffix
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| 158 | if ( str.find_last_of( "uU" ) != string::npos ) Unsigned = true;
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| 159 |
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| 160 | if ( isdigit( str[str.length() - 1] ) ) { // no suffix ?
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| 161 | lnthSuffix( str, type, ltype ); // could have length suffix
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| 162 | } else {
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| 163 | // At least one digit in integer constant, so safe to backup while looking for suffix.
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| 164 | // This declaration and the comma expressions in the conditions mimic
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| 165 | // the declare and check pattern allowed in later compiler versions.
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| 166 | // (Only some early compilers/C++ standards do not support it.)
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| 167 | string::size_type posn;
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| 168 | // pointer value
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| 169 | if ( posn = str.find_last_of( "pP" ), posn != string::npos ) {
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| 170 | ltype = 5; str.erase( posn, 1 );
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| 171 | // size_t
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| 172 | } else if ( posn = str.find_last_of( "zZ" ), posn != string::npos ) {
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| 173 | Unsigned = true; type = 2; ltype = 4; str.erase( posn, 1 );
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| 174 | // signed char
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| 175 | } else if ( posn = str.rfind( "hh" ), posn != string::npos ) {
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| 176 | type = 1; str.erase( posn, 2 );
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| 177 | // signed char
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| 178 | } else if ( posn = str.rfind( "HH" ), posn != string::npos ) {
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| 179 | type = 1; str.erase( posn, 2 );
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| 180 | // short
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| 181 | } else if ( posn = str.find_last_of( "hH" ), posn != string::npos ) {
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| 182 | type = 0; str.erase( posn, 1 );
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| 183 | // int (natural number)
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| 184 | } else if ( posn = str.find_last_of( "nN" ), posn != string::npos ) {
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| 185 | type = 2; str.erase( posn, 1 );
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| 186 | } else if ( str.rfind( "ll" ) != string::npos || str.rfind( "LL" ) != string::npos ) {
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| 187 | type = 4;
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| 188 | } else {
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| 189 | lnthSuffix( str, type, ltype );
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| 190 | } // if
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| 191 | } // if
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| 192 |
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| 193 | // Cannot be just "0"/"1"; sscanf stops at the suffix, if any; value goes over the wall => always generate
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| 194 |
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| 195 | #if ! defined(__SIZEOF_INT128__)
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| 196 | if ( type == 5 ) SemanticError( yylloc, "int128 constant is not supported on this target \"%s\"", str.c_str() );
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| 197 | #endif // ! __SIZEOF_INT128__
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| 198 |
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| 199 | if ( str[0] == '0' ) { // radix character ?
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| 200 | dec = false;
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| 201 | if ( checkX( str[1] ) ) { // hex constant ?
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| 202 | if ( type < 5 ) { // not L128 ?
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| 203 | sscanf( (char *)str.c_str(), "%llx", &v );
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| 204 | #if defined(__SIZEOF_INT128__)
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| 205 | } else { // hex int128 constant
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| 206 | unsigned int len = str.length();
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| 207 | if ( len > (2 + 16 + 16) ) SemanticError( yylloc, "128-bit hexadecimal constant to large \"%s\"", str.c_str() );
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| 208 | // hex digits < 2^64
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| 209 | if ( len > (2 + 16) ) {
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| 210 | str2 = "0x" + str.substr( len - 16 );
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| 211 | sscanf( (char *)str2.c_str(), "%llx", &v2 );
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| 212 | str = str.substr( 0, len - 16 );
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| 213 | } // if
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| 214 | sscanf( (char *)str.c_str(), "%llx", &v );
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| 215 | #endif // __SIZEOF_INT128__
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| 216 | } // if
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| 217 | //printf( "%llx %llu\n", v, v );
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| 218 | } else if ( checkB( str[1] ) ) { // binary constant ?
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| 219 | #if defined(__SIZEOF_INT128__)
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| 220 | unsigned int len = str.length();
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| 221 | if ( type == 5 && len > 2 + 64 ) {
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| 222 | if ( len > 2 + 64 + 64 ) SemanticError( yylloc, "128-bit binary constant to large \"%s\".", str.c_str() );
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| 223 | str2 = "0b" + str.substr( len - 64 );
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| 224 | str = str.substr( 0, len - 64 );
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| 225 | scanbin( str2, v2 );
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| 226 | } // if
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| 227 | #endif // __SIZEOF_INT128__
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| 228 | scanbin( str, v );
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| 229 | //printf( "%#llx %llu\n", v, v );
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| 230 | } else { // octal constant
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| 231 | if ( type < 5 ) { // not L128 ?
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| 232 | sscanf( (char *)str.c_str(), "%llo", &v );
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| 233 | #if defined(__SIZEOF_INT128__)
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| 234 | } else { // octal int128 constant
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| 235 | unsigned int len = str.length();
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| 236 | if ( len > 1 + 43 || (len == 1 + 43 && str[0] > '3') ) SemanticError( yylloc, "128-bit octal constant to large \"%s\"", str.c_str() );
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| 237 | char buf[32];
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| 238 | if ( len <= 1 + 21 ) { // value < 21 octal digitis
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| 239 | sscanf( (char *)str.c_str(), "%llo", &v );
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| 240 | } else {
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| 241 | sscanf( &str[len - 21], "%llo", &v );
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| 242 | __int128 val = v; // accumulate bits
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| 243 | str[len - 21] ='\0'; // shorten string
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| 244 | sscanf( &str[len == 43 ? 1 : 0], "%llo", &v );
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| 245 | val |= (__int128)v << 63; // store bits
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| 246 | if ( len == 1 + 43 ) { // most significant 2 bits ?
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| 247 | str[2] = '\0'; // shorten string
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| 248 | sscanf( &str[1], "%llo", &v ); // process most significant 2 bits
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| 249 | val |= (__int128)v << 126; // store bits
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| 250 | } // if
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| 251 | v = val >> 64; v2 = (uint64_t)val; // replace octal constant with 2 hex constants
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| 252 | sprintf( buf, "%#llx", v2 );
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| 253 | str2 = buf;
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| 254 | } // if
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| 255 | sprintf( buf, "%#llx", v );
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| 256 | str = buf;
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| 257 | #endif // __SIZEOF_INT128__
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| 258 | } // if
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| 259 | //printf( "%#llo %llu\n", v, v );
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| 260 | } // if
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| 261 | } else { // decimal constant ?
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| 262 | if ( type < 5 ) { // not L128 ?
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| 263 | sscanf( (char *)str.c_str(), "%llu", &v );
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| 264 | #if defined(__SIZEOF_INT128__)
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| 265 | } else { // decimal int128 constant
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| 266 | #define P10_UINT64 10'000'000'000'000'000'000ULL // 19 zeroes
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| 267 | unsigned int len = str.length();
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| 268 | if ( str.length() == 39 && str > (Unsigned ? "340282366920938463463374607431768211455" : "170141183460469231731687303715884105727") )
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| 269 | SemanticError( yylloc, "128-bit decimal constant to large \"%s\".", str.c_str() );
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| 270 | char buf[32];
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| 271 | if ( len <= 19 ) { // value < 19 decimal digitis
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| 272 | sscanf( (char *)str.c_str(), "%llu", &v );
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| 273 | } else {
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| 274 | sscanf( &str[len - 19], "%llu", &v );
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| 275 | __int128 val = v; // accumulate bits
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| 276 | str[len - 19] ='\0'; // shorten string
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| 277 | sscanf( &str[len == 39 ? 1 : 0], "%llu", &v );
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| 278 | val += (__int128)v * (__int128)P10_UINT64; // store bits
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| 279 | if ( len == 39 ) { // most significant 2 bits ?
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| 280 | str[1] = '\0'; // shorten string
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| 281 | sscanf( &str[0], "%llu", &v ); // process most significant 2 bits
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| 282 | val += (__int128)v * (__int128)P10_UINT64 * (__int128)P10_UINT64; // store bits
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| 283 | } // if
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| 284 | v = val >> 64; v2 = (uint64_t)val; // replace decimal constant with 2 hex constants
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| 285 | sprintf( buf, "%#llx", v2 );
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| 286 | str2 = buf;
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| 287 | } // if
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| 288 | sprintf( buf, "%#llx", v );
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| 289 | str = buf;
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| 290 | #endif // __SIZEOF_INT128__
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| 291 | } // if
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| 292 | //printf( "%llu\n", v );
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| 293 | } // if
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| 294 |
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| 295 | if ( type == -1 ) { // no suffix => determine type from value size
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| 296 | valueToType( v, dec, type, Unsigned );
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| 297 | } // if
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| 298 | /* printf( "%s %llo %s %llo\n", str.c_str(), v, str2.c_str(), v2 ); */
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| 299 |
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| 300 | //if ( !( 0 <= type && type <= 6 ) ) { printf( "%s %lu %d %s\n", fred.c_str(), fred.length(), type, str.c_str() ); }
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| 301 | assert( 0 <= type && type <= 6 );
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| 302 |
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| 303 | // Constant type is correct for overload resolving.
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| 304 | ret = new ast::ConstantExpr( location,
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| 305 | new ast::BasicType( kind[Unsigned][type] ), str, v );
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| 306 | if ( Unsigned && type < 2 ) { // hh or h, less than int ?
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| 307 | // int i = -1uh => 65535 not -1, so cast is necessary for unsigned, which unfortunately eliminates warnings for large values.
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| 308 | ret = new ast::CastExpr( location,
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| 309 | ret,
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| 310 | new ast::BasicType( kind[Unsigned][type] ),
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| 311 | ast::ExplicitCast );
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| 312 | } else if ( ltype != -1 ) { // explicit length ?
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| 313 | if ( ltype == 6 ) { // int128, (int128)constant
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| 314 | ret2 = new ast::ConstantExpr( location,
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| 315 | new ast::BasicType( ast::BasicType::LongLongSignedInt ),
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| 316 | str2,
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| 317 | v2 );
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| 318 | ret = build_compoundLiteral( location,
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| 319 | DeclarationNode::newFromTypeData(
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| 320 | addType(
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| 321 | build_basic_type( TypeData::Int128 ),
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| 322 | build_signedness( TypeData::Unsigned ) ) ),
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| 323 | new InitializerNode(
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| 324 | (new InitializerNode( new ExpressionNode( v2 == 0 ? ret2 : ret ) ))->set_last( new InitializerNode( new ExpressionNode( v2 == 0 ? ret : ret2 ) ) ), true )
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| 325 | );
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| 326 | } else { // explicit length, (length_type)constant
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| 327 | ret = new ast::CastExpr( location,
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| 328 | ret,
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| 329 | new ast::TypeInstType( lnthsInt[Unsigned][ltype], ast::TypeDecl::Dtype ),
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| 330 | ast::ExplicitCast );
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| 331 | if ( ltype == 5 ) { // pointer, intptr( (uintptr_t)constant )
|
|---|
| 332 | ret = build_func( location,
|
|---|
| 333 | new ExpressionNode(
|
|---|
| 334 | build_varref( location, new string( "intptr" ) ) ),
|
|---|
| 335 | new ExpressionNode( ret ) );
|
|---|
| 336 | } // if
|
|---|
| 337 | } // if
|
|---|
| 338 | } // if
|
|---|
| 339 |
|
|---|
| 340 | CLEANUP: ;
|
|---|
| 341 | delete &str; // created by lex
|
|---|
| 342 | return ret;
|
|---|
| 343 | } // build_constantInteger
|
|---|
| 344 |
|
|---|
| 345 |
|
|---|
| 346 | static inline void checkFnxFloat( string & str, size_t last, bool & explnth, int & type ) {
|
|---|
| 347 | string::size_type posn;
|
|---|
| 348 | // floating-point constant has minimum of 2 characters, 1. or .1, so safe to look ahead
|
|---|
| 349 | if ( str[1] == 'x' ) { // hex ?
|
|---|
| 350 | posn = str.find_last_of( "pP" ); // back for exponent (must have)
|
|---|
| 351 | posn = str.find_first_of( "fF", posn + 1 ); // forward for size (fF allowed in hex constant)
|
|---|
| 352 | } else {
|
|---|
| 353 | posn = str.find_last_of( "fF" ); // back for size (fF not allowed)
|
|---|
| 354 | } // if
|
|---|
| 355 | if ( posn == string::npos ) return;
|
|---|
| 356 | explnth = true;
|
|---|
| 357 | posn += 1; // advance to size
|
|---|
| 358 | if ( str[posn] == '3' ) { // 32
|
|---|
| 359 | if ( str[last] != 'x' ) type = 6;
|
|---|
| 360 | else type = 7;
|
|---|
| 361 | } else if ( str[posn] == '6' ) { // 64
|
|---|
| 362 | if ( str[last] != 'x' ) type = 8;
|
|---|
| 363 | else type = 9;
|
|---|
| 364 | } else if ( str[posn] == '8' ) { // 80
|
|---|
| 365 | type = 3;
|
|---|
| 366 | } else if ( str[posn] == '1' ) { // 16/128
|
|---|
| 367 | if ( str[posn + 1] == '6' ) { // 16
|
|---|
| 368 | type = 5;
|
|---|
| 369 | } else { // 128
|
|---|
| 370 | if ( str[last] != 'x' ) type = 10;
|
|---|
| 371 | else type = 11;
|
|---|
| 372 | } // if
|
|---|
| 373 | } else {
|
|---|
| 374 | assertf( false, "internal error, bad floating point length %s", str.c_str() );
|
|---|
| 375 | } // if
|
|---|
| 376 | } // checkFnxFloat
|
|---|
| 377 |
|
|---|
| 378 |
|
|---|
| 379 | ast::Expr * build_constantFloat(
|
|---|
| 380 | const CodeLocation & location, string & str ) {
|
|---|
| 381 | static const ast::BasicType::Kind kind[2][12] = {
|
|---|
| 382 | { ast::BasicType::Float, ast::BasicType::Double, ast::BasicType::LongDouble, ast::BasicType::uuFloat80, ast::BasicType::uuFloat128, ast::BasicType::uFloat16, ast::BasicType::uFloat32, ast::BasicType::uFloat32x, ast::BasicType::uFloat64, ast::BasicType::uFloat64x, ast::BasicType::uFloat128, ast::BasicType::uFloat128x },
|
|---|
| 383 | { ast::BasicType::FloatComplex, ast::BasicType::DoubleComplex, ast::BasicType::LongDoubleComplex, ast::BasicType::NUMBER_OF_BASIC_TYPES, ast::BasicType::NUMBER_OF_BASIC_TYPES, ast::BasicType::uFloat16Complex, ast::BasicType::uFloat32Complex, ast::BasicType::uFloat32xComplex, ast::BasicType::uFloat64Complex, ast::BasicType::uFloat64xComplex, ast::BasicType::uFloat128Complex, ast::BasicType::uFloat128xComplex },
|
|---|
| 384 | };
|
|---|
| 385 |
|
|---|
| 386 | // floating-point constant has minimum of 2 characters 1. or .1
|
|---|
| 387 | size_t last = str.length() - 1;
|
|---|
| 388 | double v;
|
|---|
| 389 | int type; // 0 => float, 1 => double, 3 => long double, ...
|
|---|
| 390 | bool complx = false; // real, complex
|
|---|
| 391 | bool explnth = false; // explicit literal length
|
|---|
| 392 |
|
|---|
| 393 | sscanf( str.c_str(), "%lg", &v );
|
|---|
| 394 |
|
|---|
| 395 | if ( checkI( str[last] ) ) { // imaginary ?
|
|---|
| 396 | complx = true;
|
|---|
| 397 | last -= 1; // backup one character
|
|---|
| 398 | } // if
|
|---|
| 399 |
|
|---|
| 400 | if ( checkF( str[last] ) ) { // float ?
|
|---|
| 401 | type = 0;
|
|---|
| 402 | } else if ( checkD( str[last] ) ) { // double ?
|
|---|
| 403 | type = 1;
|
|---|
| 404 | } else if ( checkL( str[last] ) ) { // long double ?
|
|---|
| 405 | type = 2;
|
|---|
| 406 | } else if ( checkF80( str[last] ) ) { // __float80 ?
|
|---|
| 407 | type = 3;
|
|---|
| 408 | } else if ( checkF128( str[last] ) ) { // __float128 ?
|
|---|
| 409 | type = 4;
|
|---|
| 410 | } else {
|
|---|
| 411 | type = 1; // double (default if no suffix)
|
|---|
| 412 | checkFnxFloat( str, last, explnth, type );
|
|---|
| 413 | } // if
|
|---|
| 414 |
|
|---|
| 415 | if ( ! complx && checkI( str[last - 1] ) ) { // imaginary ?
|
|---|
| 416 | complx = true;
|
|---|
| 417 | } // if
|
|---|
| 418 |
|
|---|
| 419 | assert( 0 <= type && type < 12 );
|
|---|
| 420 | ast::Expr * ret = new ast::ConstantExpr( location,
|
|---|
| 421 | new ast::BasicType( kind[complx][type] ),
|
|---|
| 422 | str,
|
|---|
| 423 | v );
|
|---|
| 424 | // explicit length ?
|
|---|
| 425 | if ( explnth ) {
|
|---|
| 426 | ret = new ast::CastExpr( location,
|
|---|
| 427 | ret,
|
|---|
| 428 | new ast::BasicType( kind[complx][type] ),
|
|---|
| 429 | ast::ExplicitCast );
|
|---|
| 430 | } // if
|
|---|
| 431 |
|
|---|
| 432 | delete &str; // created by lex
|
|---|
| 433 | return ret;
|
|---|
| 434 | } // build_constantFloat
|
|---|
| 435 |
|
|---|
| 436 | static void sepString( string & str, string & units, char delimit ) {
|
|---|
| 437 | string::size_type posn = str.find_last_of( delimit ) + 1;
|
|---|
| 438 | if ( posn != str.length() ) {
|
|---|
| 439 | units = "?" + str.substr( posn ); // extract units
|
|---|
| 440 | str.erase( posn ); // remove units
|
|---|
| 441 | } // if
|
|---|
| 442 | } // sepString
|
|---|
| 443 |
|
|---|
| 444 | ast::Expr * build_constantChar( const CodeLocation & location, string & str ) {
|
|---|
| 445 | string units; // units
|
|---|
| 446 | sepString( str, units, '\'' ); // separate constant from units
|
|---|
| 447 |
|
|---|
| 448 | ast::Expr * ret = new ast::ConstantExpr( location,
|
|---|
| 449 | new ast::BasicType( ast::BasicType::Char ),
|
|---|
| 450 | str,
|
|---|
| 451 | (unsigned long long int)(unsigned char)str[1] );
|
|---|
| 452 | if ( units.length() != 0 ) {
|
|---|
| 453 | ret = new ast::UntypedExpr( location,
|
|---|
| 454 | new ast::NameExpr( location, units ),
|
|---|
| 455 | { ret } );
|
|---|
| 456 | } // if
|
|---|
| 457 |
|
|---|
| 458 | delete &str; // created by lex
|
|---|
| 459 | return ret;
|
|---|
| 460 | } // build_constantChar
|
|---|
| 461 |
|
|---|
| 462 | ast::Expr * build_constantStr(
|
|---|
| 463 | const CodeLocation & location,
|
|---|
| 464 | string & str ) {
|
|---|
| 465 | assert( str.length() > 0 );
|
|---|
| 466 | string units; // units
|
|---|
| 467 | sepString( str, units, '"' ); // separate constant from units
|
|---|
| 468 |
|
|---|
| 469 | ast::Type * strtype;
|
|---|
| 470 | switch ( str[0] ) { // str has >= 2 characters, i.e, null string "" => safe to look at subscripts 0/1
|
|---|
| 471 | case 'u':
|
|---|
| 472 | if ( str[1] == '8' ) goto Default; // utf-8 characters => array of char
|
|---|
| 473 | // lookup type of associated typedef
|
|---|
| 474 | strtype = new ast::TypeInstType( "char16_t", ast::TypeDecl::Dtype );
|
|---|
| 475 | break;
|
|---|
| 476 | case 'U':
|
|---|
| 477 | strtype = new ast::TypeInstType( "char32_t", ast::TypeDecl::Dtype );
|
|---|
| 478 | break;
|
|---|
| 479 | case 'L':
|
|---|
| 480 | strtype = new ast::TypeInstType( "wchar_t", ast::TypeDecl::Dtype );
|
|---|
| 481 | break;
|
|---|
| 482 | Default: // char default string type
|
|---|
| 483 | default:
|
|---|
| 484 | strtype = new ast::BasicType( ast::BasicType::Char );
|
|---|
| 485 | } // switch
|
|---|
| 486 | ast::ArrayType * at = new ast::ArrayType(
|
|---|
| 487 | strtype,
|
|---|
| 488 | // Length is adjusted: +1 for '\0' and -2 for '"'
|
|---|
| 489 | ast::ConstantExpr::from_ulong( location, str.size() + 1 - 2 ),
|
|---|
| 490 | ast::FixedLen,
|
|---|
| 491 | ast::DynamicDim );
|
|---|
| 492 | ast::Expr * ret = new ast::ConstantExpr( location, at, str, std::nullopt );
|
|---|
| 493 | if ( units.length() != 0 ) {
|
|---|
| 494 | ret = new ast::UntypedExpr( location,
|
|---|
| 495 | new ast::NameExpr( location, units ),
|
|---|
| 496 | { ret } );
|
|---|
| 497 | } // if
|
|---|
| 498 |
|
|---|
| 499 | delete &str; // created by lex
|
|---|
| 500 | return ret;
|
|---|
| 501 | } // build_constantStr
|
|---|
| 502 |
|
|---|
| 503 | ast::Expr * build_field_name_FLOATING_FRACTIONconstant(
|
|---|
| 504 | const CodeLocation & location, const string & str ) {
|
|---|
| 505 | if ( str.find_first_not_of( "0123456789", 1 ) != string::npos ) SemanticError( yylloc, "invalid tuple index \"%s\".", str.c_str() );
|
|---|
| 506 | ast::Expr * ret = build_constantInteger( location,
|
|---|
| 507 | *new string( str.substr(1) ) );
|
|---|
| 508 | delete &str;
|
|---|
| 509 | return ret;
|
|---|
| 510 | } // build_field_name_FLOATING_FRACTIONconstant
|
|---|
| 511 |
|
|---|
| 512 | ast::Expr * build_field_name_FLOATING_DECIMALconstant(
|
|---|
| 513 | const CodeLocation & location, const string & str ) {
|
|---|
| 514 | if ( str[str.size() - 1] != '.' ) SemanticError( yylloc, "invalid tuple index \"%s\".", str.c_str() );
|
|---|
| 515 | ast::Expr * ret = build_constantInteger(
|
|---|
| 516 | location, *new string( str.substr( 0, str.size()-1 ) ) );
|
|---|
| 517 | delete &str;
|
|---|
| 518 | return ret;
|
|---|
| 519 | } // build_field_name_FLOATING_DECIMALconstant
|
|---|
| 520 |
|
|---|
| 521 | ast::Expr * build_field_name_FLOATINGconstant( const CodeLocation & location,
|
|---|
| 522 | const string & str ) {
|
|---|
| 523 | // str is of the form A.B -> separate at the . and return member expression
|
|---|
| 524 | int a, b;
|
|---|
| 525 | char dot;
|
|---|
| 526 | stringstream ss( str );
|
|---|
| 527 | ss >> a >> dot >> b;
|
|---|
| 528 | auto ret = new ast::UntypedMemberExpr( location,
|
|---|
| 529 | ast::ConstantExpr::from_int( location, b ),
|
|---|
| 530 | ast::ConstantExpr::from_int( location, a )
|
|---|
| 531 | );
|
|---|
| 532 | delete &str;
|
|---|
| 533 | return ret;
|
|---|
| 534 | } // build_field_name_FLOATINGconstant
|
|---|
| 535 |
|
|---|
| 536 | ast::Expr * make_field_name_fraction_constants( const CodeLocation & location,
|
|---|
| 537 | ast::Expr * fieldName,
|
|---|
| 538 | ast::Expr * fracts ) {
|
|---|
| 539 | if ( nullptr == fracts ) {
|
|---|
| 540 | return fieldName;
|
|---|
| 541 | } else if ( auto memberExpr = dynamic_cast<ast::UntypedMemberExpr *>( fracts ) ) {
|
|---|
| 542 | memberExpr->member = make_field_name_fraction_constants( location,
|
|---|
| 543 | fieldName,
|
|---|
| 544 | ast::mutate( memberExpr->aggregate.get() ) );
|
|---|
| 545 | return memberExpr;
|
|---|
| 546 | } else {
|
|---|
| 547 | return new ast::UntypedMemberExpr( location, fracts, fieldName );
|
|---|
| 548 | } // if
|
|---|
| 549 | } // make_field_name_fraction_constants
|
|---|
| 550 |
|
|---|
| 551 | ast::Expr * build_field_name_fraction_constants( const CodeLocation & location,
|
|---|
| 552 | ast::Expr * fieldName,
|
|---|
| 553 | ExpressionNode * fracts ) {
|
|---|
| 554 | return make_field_name_fraction_constants( location, fieldName, maybeMoveBuild( fracts ) );
|
|---|
| 555 | } // build_field_name_fraction_constants
|
|---|
| 556 |
|
|---|
| 557 | ast::NameExpr * build_varref( const CodeLocation & location,
|
|---|
| 558 | const string * name ) {
|
|---|
| 559 | ast::NameExpr * expr = new ast::NameExpr( location, *name );
|
|---|
| 560 | delete name;
|
|---|
| 561 | return expr;
|
|---|
| 562 | } // build_varref
|
|---|
| 563 |
|
|---|
| 564 | ast::QualifiedNameExpr * build_qualified_expr( const CodeLocation & location,
|
|---|
| 565 | const DeclarationNode * decl_node,
|
|---|
| 566 | const ast::NameExpr * name ) {
|
|---|
| 567 | ast::Decl * newDecl = maybeBuild( decl_node );
|
|---|
| 568 | if ( ast::DeclWithType * newDeclWithType = dynamic_cast<ast::DeclWithType *>( newDecl ) ) {
|
|---|
| 569 | if ( const ast::Type * t = newDeclWithType->get_type() ) {
|
|---|
| 570 | if ( auto typeInst = dynamic_cast<const ast::TypeInstType *>( t ) ) {
|
|---|
| 571 | newDecl = new ast::EnumDecl( location, typeInst->name );
|
|---|
| 572 | }
|
|---|
| 573 | }
|
|---|
| 574 | }
|
|---|
| 575 | return new ast::QualifiedNameExpr( location, newDecl, name->name );
|
|---|
| 576 | }
|
|---|
| 577 |
|
|---|
| 578 | ast::QualifiedNameExpr * build_qualified_expr( const CodeLocation & location,
|
|---|
| 579 | const ast::EnumDecl * decl,
|
|---|
| 580 | const ast::NameExpr * name ) {
|
|---|
| 581 | return new ast::QualifiedNameExpr( location, decl, name->name );
|
|---|
| 582 | }
|
|---|
| 583 |
|
|---|
| 584 | ast::DimensionExpr * build_dimensionref( const CodeLocation & location,
|
|---|
| 585 | const string * name ) {
|
|---|
| 586 | ast::DimensionExpr * expr = new ast::DimensionExpr( location, *name );
|
|---|
| 587 | delete name;
|
|---|
| 588 | return expr;
|
|---|
| 589 | } // build_varref
|
|---|
| 590 |
|
|---|
| 591 | // TODO: get rid of this and OperKinds and reuse code from OperatorTable
|
|---|
| 592 | static const char * OperName[] = { // must harmonize with OperKinds
|
|---|
| 593 | // diadic
|
|---|
| 594 | "SizeOf", "AlignOf", "OffsetOf", "?+?", "?-?", "?\\?", "?*?", "?/?", "?%?", "||", "&&",
|
|---|
| 595 | "?|?", "?&?", "?^?", "Cast", "?<<?", "?>>?", "?<?", "?>?", "?<=?", "?>=?", "?==?", "?!=?",
|
|---|
| 596 | "?=?", "?@=?", "?\\=?", "?*=?", "?/=?", "?%=?", "?+=?", "?-=?", "?<<=?", "?>>=?", "?&=?", "?^=?", "?|=?",
|
|---|
| 597 | "?[?]", "...",
|
|---|
| 598 | // monadic
|
|---|
| 599 | "+?", "-?", "AddressOf", "*?", "!?", "~?", "++?", "?++", "--?", "?--",
|
|---|
| 600 | }; // OperName
|
|---|
| 601 |
|
|---|
| 602 | ast::Expr * build_cast( const CodeLocation & location,
|
|---|
| 603 | DeclarationNode * decl_node,
|
|---|
| 604 | ExpressionNode * expr_node,
|
|---|
| 605 | ast::CastExpr::CastKind kind ) {
|
|---|
| 606 | ast::Type * targetType = maybeMoveBuildType( decl_node );
|
|---|
| 607 | if ( dynamic_cast<ast::VoidType *>( targetType ) ) {
|
|---|
| 608 | delete targetType;
|
|---|
| 609 | return new ast::CastExpr( location,
|
|---|
| 610 | maybeMoveBuild( expr_node ),
|
|---|
| 611 | ast::ExplicitCast, kind );
|
|---|
| 612 | } else {
|
|---|
| 613 | return new ast::CastExpr( location,
|
|---|
| 614 | maybeMoveBuild( expr_node ),
|
|---|
| 615 | targetType,
|
|---|
| 616 | ast::ExplicitCast, kind );
|
|---|
| 617 | } // if
|
|---|
| 618 | } // build_cast
|
|---|
| 619 |
|
|---|
| 620 | ast::Expr * build_keyword_cast( const CodeLocation & location,
|
|---|
| 621 | ast::AggregateDecl::Aggregate target,
|
|---|
| 622 | ExpressionNode * expr_node ) {
|
|---|
| 623 | return new ast::KeywordCastExpr( location,
|
|---|
| 624 | maybeMoveBuild( expr_node ),
|
|---|
| 625 | target
|
|---|
| 626 | );
|
|---|
| 627 | }
|
|---|
| 628 |
|
|---|
| 629 | ast::Expr * build_virtual_cast( const CodeLocation & location,
|
|---|
| 630 | DeclarationNode * decl_node,
|
|---|
| 631 | ExpressionNode * expr_node ) {
|
|---|
| 632 | return new ast::VirtualCastExpr( location,
|
|---|
| 633 | maybeMoveBuild( expr_node ),
|
|---|
| 634 | maybeMoveBuildType( decl_node )
|
|---|
| 635 | );
|
|---|
| 636 | } // build_virtual_cast
|
|---|
| 637 |
|
|---|
| 638 | ast::Expr * build_fieldSel( const CodeLocation & location,
|
|---|
| 639 | ExpressionNode * expr_node,
|
|---|
| 640 | ast::Expr * member ) {
|
|---|
| 641 | return new ast::UntypedMemberExpr( location,
|
|---|
| 642 | member,
|
|---|
| 643 | maybeMoveBuild( expr_node )
|
|---|
| 644 | );
|
|---|
| 645 | } // build_fieldSel
|
|---|
| 646 |
|
|---|
| 647 | ast::Expr * build_pfieldSel( const CodeLocation & location,
|
|---|
| 648 | ExpressionNode * expr_node,
|
|---|
| 649 | ast::Expr * member ) {
|
|---|
| 650 | auto deref = new ast::UntypedExpr( location,
|
|---|
| 651 | new ast::NameExpr( location, "*?" )
|
|---|
| 652 | );
|
|---|
| 653 | deref->location = expr_node->location;
|
|---|
| 654 | deref->args.push_back( maybeMoveBuild( expr_node ) );
|
|---|
| 655 | auto ret = new ast::UntypedMemberExpr( location, member, deref );
|
|---|
| 656 | return ret;
|
|---|
| 657 | } // build_pfieldSel
|
|---|
| 658 |
|
|---|
| 659 | ast::Expr * build_offsetOf( const CodeLocation & location,
|
|---|
| 660 | DeclarationNode * decl_node,
|
|---|
| 661 | ast::NameExpr * member ) {
|
|---|
| 662 | ast::Expr * ret = new ast::UntypedOffsetofExpr( location,
|
|---|
| 663 | maybeMoveBuildType( decl_node ),
|
|---|
| 664 | member->name
|
|---|
| 665 | );
|
|---|
| 666 | ret->result = new ast::BasicType( ast::BasicType::LongUnsignedInt );
|
|---|
| 667 | delete member;
|
|---|
| 668 | return ret;
|
|---|
| 669 | } // build_offsetOf
|
|---|
| 670 |
|
|---|
| 671 | ast::Expr * build_and_or( const CodeLocation & location,
|
|---|
| 672 | ExpressionNode * expr_node1,
|
|---|
| 673 | ExpressionNode * expr_node2,
|
|---|
| 674 | ast::LogicalFlag flag ) {
|
|---|
| 675 | return new ast::LogicalExpr( location,
|
|---|
| 676 | maybeMoveBuild( expr_node1 ),
|
|---|
| 677 | maybeMoveBuild( expr_node2 ),
|
|---|
| 678 | flag
|
|---|
| 679 | );
|
|---|
| 680 | } // build_and_or
|
|---|
| 681 |
|
|---|
| 682 | ast::Expr * build_unary_val( const CodeLocation & location,
|
|---|
| 683 | OperKinds op,
|
|---|
| 684 | ExpressionNode * expr_node ) {
|
|---|
| 685 | std::vector<ast::ptr<ast::Expr>> args;
|
|---|
| 686 | args.push_back( maybeMoveBuild( expr_node ) );
|
|---|
| 687 | return new ast::UntypedExpr( location,
|
|---|
| 688 | new ast::NameExpr( location, OperName[ (int)op ] ),
|
|---|
| 689 | std::move( args )
|
|---|
| 690 | );
|
|---|
| 691 | } // build_unary_val
|
|---|
| 692 |
|
|---|
| 693 | ast::Expr * build_binary_val( const CodeLocation & location,
|
|---|
| 694 | OperKinds op,
|
|---|
| 695 | ExpressionNode * expr_node1,
|
|---|
| 696 | ExpressionNode * expr_node2 ) {
|
|---|
| 697 | std::vector<ast::ptr<ast::Expr>> args;
|
|---|
| 698 | args.push_back( maybeMoveBuild( expr_node1 ) );
|
|---|
| 699 | args.push_back( maybeMoveBuild( expr_node2 ) );
|
|---|
| 700 | return new ast::UntypedExpr( location,
|
|---|
| 701 | new ast::NameExpr( location, OperName[ (int)op ] ),
|
|---|
| 702 | std::move( args )
|
|---|
| 703 | );
|
|---|
| 704 | } // build_binary_val
|
|---|
| 705 |
|
|---|
| 706 | ast::Expr * build_cond( const CodeLocation & location,
|
|---|
| 707 | ExpressionNode * expr_node1,
|
|---|
| 708 | ExpressionNode * expr_node2,
|
|---|
| 709 | ExpressionNode * expr_node3 ) {
|
|---|
| 710 | return new ast::ConditionalExpr( location,
|
|---|
| 711 | maybeMoveBuild( expr_node1 ),
|
|---|
| 712 | maybeMoveBuild( expr_node2 ),
|
|---|
| 713 | maybeMoveBuild( expr_node3 )
|
|---|
| 714 | );
|
|---|
| 715 | } // build_cond
|
|---|
| 716 |
|
|---|
| 717 | ast::Expr * build_tuple( const CodeLocation & location,
|
|---|
| 718 | ExpressionNode * expr_node ) {
|
|---|
| 719 | std::vector<ast::ptr<ast::Expr>> exprs;
|
|---|
| 720 | buildMoveList( expr_node, exprs );
|
|---|
| 721 | return new ast::UntypedTupleExpr( location, std::move( exprs ) );
|
|---|
| 722 | } // build_tuple
|
|---|
| 723 |
|
|---|
| 724 | ast::Expr * build_func( const CodeLocation & location,
|
|---|
| 725 | ExpressionNode * function,
|
|---|
| 726 | ExpressionNode * expr_node ) {
|
|---|
| 727 | std::vector<ast::ptr<ast::Expr>> args;
|
|---|
| 728 | buildMoveList( expr_node, args );
|
|---|
| 729 | return new ast::UntypedExpr( location,
|
|---|
| 730 | maybeMoveBuild( function ),
|
|---|
| 731 | std::move( args )
|
|---|
| 732 | );
|
|---|
| 733 | } // build_func
|
|---|
| 734 |
|
|---|
| 735 | ast::Expr * build_compoundLiteral( const CodeLocation & location,
|
|---|
| 736 | DeclarationNode * decl_node,
|
|---|
| 737 | InitializerNode * kids ) {
|
|---|
| 738 | // compound literal type
|
|---|
| 739 | ast::Decl * newDecl = maybeBuild( decl_node );
|
|---|
| 740 | // non-sue compound-literal type
|
|---|
| 741 | if ( ast::DeclWithType * newDeclWithType = dynamic_cast<ast::DeclWithType *>( newDecl ) ) {
|
|---|
| 742 | return new ast::CompoundLiteralExpr( location,
|
|---|
| 743 | newDeclWithType->get_type(),
|
|---|
| 744 | maybeMoveBuild( kids ) );
|
|---|
| 745 | // these types do not have associated type information
|
|---|
| 746 | } else if ( auto newDeclStructDecl = dynamic_cast<ast::StructDecl *>( newDecl ) ) {
|
|---|
| 747 | if ( newDeclStructDecl->body ) {
|
|---|
| 748 | return new ast::CompoundLiteralExpr( location,
|
|---|
| 749 | new ast::StructInstType( newDeclStructDecl ),
|
|---|
| 750 | maybeMoveBuild( kids ) );
|
|---|
| 751 | } else {
|
|---|
| 752 | return new ast::CompoundLiteralExpr( location,
|
|---|
| 753 | new ast::StructInstType( newDeclStructDecl->name ),
|
|---|
| 754 | maybeMoveBuild( kids ) );
|
|---|
| 755 | } // if
|
|---|
| 756 | } else if ( auto newDeclUnionDecl = dynamic_cast<ast::UnionDecl *>( newDecl ) ) {
|
|---|
| 757 | if ( newDeclUnionDecl->body ) {
|
|---|
| 758 | return new ast::CompoundLiteralExpr( location,
|
|---|
| 759 | new ast::UnionInstType( newDeclUnionDecl ),
|
|---|
| 760 | maybeMoveBuild( kids ) );
|
|---|
| 761 | } else {
|
|---|
| 762 | return new ast::CompoundLiteralExpr( location,
|
|---|
| 763 | new ast::UnionInstType( newDeclUnionDecl->name ),
|
|---|
| 764 | maybeMoveBuild( kids ) );
|
|---|
| 765 | } // if
|
|---|
| 766 | } else if ( auto newDeclEnumDecl = dynamic_cast<ast::EnumDecl *>( newDecl ) ) {
|
|---|
| 767 | if ( newDeclEnumDecl->body ) {
|
|---|
| 768 | return new ast::CompoundLiteralExpr( location,
|
|---|
| 769 | new ast::EnumInstType( newDeclEnumDecl ),
|
|---|
| 770 | maybeMoveBuild( kids ) );
|
|---|
| 771 | } else {
|
|---|
| 772 | return new ast::CompoundLiteralExpr( location,
|
|---|
| 773 | new ast::EnumInstType( newDeclEnumDecl->name ),
|
|---|
| 774 | maybeMoveBuild( kids ) );
|
|---|
| 775 | } // if
|
|---|
| 776 | } else {
|
|---|
| 777 | assert( false );
|
|---|
| 778 | } // if
|
|---|
| 779 | } // build_compoundLiteral
|
|---|
| 780 |
|
|---|
| 781 | // Local Variables: //
|
|---|
| 782 | // tab-width: 4 //
|
|---|
| 783 | // End: //
|
|---|
