[b87a5ed] | 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 | // ParseNode.cc -- |
---|
| 8 | // |
---|
| 9 | // Author : Rodolfo G. Esteves |
---|
| 10 | // Created On : Sat May 16 13:26:29 2015 |
---|
[ca35c51] | 11 | // Last Modified By : Peter A. Buhr |
---|
[8e9cbb2] | 12 | // Last Modified On : Thu Jun 30 21:13:12 2016 |
---|
| 13 | // Update Count : 52 |
---|
[b87a5ed] | 14 | // |
---|
| 15 | |
---|
[ca35c51] | 16 | #include <climits> |
---|
[51b7345] | 17 | #include "ParseNode.h" |
---|
| 18 | using namespace std; |
---|
| 19 | |
---|
[ca35c51] | 20 | // Difficult to separate extra parts of constants during lexing because actions are not allow in the middle of patterns: |
---|
| 21 | // |
---|
| 22 | // prefix action constant action suffix |
---|
| 23 | // |
---|
| 24 | // Alternatively, breaking a pattern using BEGIN does not work if the following pattern can be empty: |
---|
| 25 | // |
---|
| 26 | // constant BEGIN CONT ... |
---|
| 27 | // <CONT>(...)? BEGIN 0 ... // possible empty suffix |
---|
| 28 | // |
---|
| 29 | // because the CONT rule is NOT triggered if the pattern is empty. Hence, constants are reparsed here to determine their |
---|
| 30 | // type. |
---|
| 31 | |
---|
| 32 | static inline bool checkU( char c ) { return c == 'u' || c == 'U'; } |
---|
| 33 | static inline bool checkL( char c ) { return c == 'l' || c == 'L'; } |
---|
| 34 | static inline bool checkF( char c ) { return c == 'f' || c == 'F'; } |
---|
| 35 | static inline bool checkD( char c ) { return c == 'd' || c == 'D'; } |
---|
| 36 | static inline bool checkI( char c ) { return c == 'i' || c == 'I'; } |
---|
| 37 | static inline bool checkX( char c ) { return c == 'x' || c == 'X'; } |
---|
| 38 | |
---|
| 39 | BasicType::Kind literalType( ConstantNode::Type type, string &value ) { |
---|
| 40 | BasicType::Kind btype; |
---|
| 41 | |
---|
| 42 | // lexing divides constants into 4 kinds |
---|
| 43 | switch ( type ) { |
---|
| 44 | case ConstantNode::Integer: |
---|
| 45 | { |
---|
| 46 | static const BasicType::Kind kind[2][3] = { |
---|
| 47 | { BasicType::SignedInt, BasicType::LongSignedInt, BasicType::LongLongSignedInt }, |
---|
| 48 | { BasicType::UnsignedInt, BasicType::LongUnsignedInt, BasicType::LongLongUnsignedInt }, |
---|
| 49 | }; |
---|
| 50 | bool dec = true, Unsigned = false; // decimal, unsigned constant |
---|
| 51 | int size; // 0 => int, 1 => long, 2 => long long |
---|
| 52 | unsigned long long v; // converted integral value |
---|
| 53 | size_t last = value.length() - 1; // last character of constant |
---|
| 54 | |
---|
| 55 | if ( value[0] == '0' ) { // octal constant ? |
---|
| 56 | dec = false; |
---|
| 57 | if ( last != 0 && checkX( value[1] ) ) { // hex constant ? |
---|
| 58 | sscanf( (char *)value.c_str(), "%llx", &v ); |
---|
| 59 | //printf( "%llx %llu\n", v, v ); |
---|
| 60 | } else { |
---|
| 61 | sscanf( (char *)value.c_str(), "%llo", &v ); |
---|
| 62 | //printf( "%llo %llu\n", v, v ); |
---|
| 63 | } // if |
---|
| 64 | } else { // decimal constant ? |
---|
| 65 | sscanf( (char *)value.c_str(), "%llu", &v ); |
---|
| 66 | //printf( "%llu %llu\n", v, v ); |
---|
| 67 | } // if |
---|
| 68 | |
---|
| 69 | if ( v <= INT_MAX ) { // signed int |
---|
| 70 | size = 0; |
---|
| 71 | } else if ( v <= UINT_MAX && ! dec ) { // unsigned int |
---|
| 72 | size = 0; |
---|
| 73 | Unsigned = true; // unsigned |
---|
| 74 | } else if ( v <= LONG_MAX ) { // signed long int |
---|
| 75 | size = 1; |
---|
| 76 | } else if ( v <= ULONG_MAX && ( ! dec || LONG_MAX == LLONG_MAX ) ) { // signed long int |
---|
| 77 | size = 1; |
---|
| 78 | Unsigned = true; // unsigned long int |
---|
| 79 | } else if ( v <= LLONG_MAX ) { // signed long long int |
---|
| 80 | size = 2; |
---|
| 81 | } else { // unsigned long long int |
---|
| 82 | size = 2; |
---|
| 83 | Unsigned = true; // unsigned long long int |
---|
| 84 | } // if |
---|
| 85 | |
---|
| 86 | if ( checkU( value[last] ) ) { // suffix 'u' ? |
---|
| 87 | Unsigned = true; |
---|
| 88 | if ( last > 0 && checkL( value[ last - 1 ] ) ) { // suffix 'l' ? |
---|
| 89 | size = 1; |
---|
| 90 | if ( last > 1 && checkL( value[ last - 2 ] ) ) { // suffix 'll' ? |
---|
| 91 | size = 2; |
---|
| 92 | } // if |
---|
| 93 | } // if |
---|
| 94 | } else if ( checkL( value[ last ] ) ) { // suffix 'l' ? |
---|
| 95 | size = 1; |
---|
| 96 | if ( last > 0 && checkL( value[ last - 1 ] ) ) { // suffix 'll' ? |
---|
| 97 | size = 2; |
---|
| 98 | if ( last > 1 && checkU( value[ last - 2 ] ) ) { // suffix 'u' ? |
---|
| 99 | Unsigned = true; |
---|
| 100 | } // if |
---|
| 101 | } else { |
---|
| 102 | if ( last > 0 && checkU( value[ last - 1 ] ) ) { // suffix 'u' ? |
---|
| 103 | Unsigned = true; |
---|
| 104 | } // if |
---|
| 105 | } // if |
---|
| 106 | } // if |
---|
| 107 | btype = kind[Unsigned][size]; // lookup constant type |
---|
| 108 | break; |
---|
| 109 | } |
---|
| 110 | case ConstantNode::Float: |
---|
| 111 | { |
---|
| 112 | static const BasicType::Kind kind[2][3] = { |
---|
| 113 | { BasicType::Float, BasicType::Double, BasicType::LongDouble }, |
---|
| 114 | { BasicType::FloatComplex, BasicType::DoubleComplex, BasicType::LongDoubleComplex }, |
---|
| 115 | }; |
---|
| 116 | bool complx = false; // real, complex |
---|
| 117 | int size = 1; // 0 => float, 1 => double (default), 2 => long double |
---|
| 118 | // floating-point constant has minimum of 2 characters: 1. or .1 |
---|
| 119 | size_t last = value.length() - 1; |
---|
| 120 | |
---|
| 121 | if ( checkI( value[last] ) ) { // imaginary ? |
---|
| 122 | complx = true; |
---|
| 123 | last -= 1; // backup one character |
---|
| 124 | } // if |
---|
| 125 | if ( checkF( value[last] ) ) { // float ? |
---|
| 126 | size = 0; |
---|
| 127 | } else if ( checkD( value[last] ) ) { // double ? |
---|
| 128 | size = 1; |
---|
| 129 | } else if ( checkL( value[last] ) ) { // long double ? |
---|
| 130 | size = 2; |
---|
| 131 | } // if |
---|
| 132 | if ( ! complx && checkI( value[last - 1] ) ) { // imaginary ? |
---|
| 133 | complx = true; |
---|
| 134 | } // if |
---|
| 135 | btype = kind[complx][size]; // lookup constant type |
---|
| 136 | break; |
---|
| 137 | } |
---|
| 138 | case ConstantNode::Character: |
---|
| 139 | btype = BasicType::Char; // default |
---|
| 140 | if ( string( "LUu" ).find( value[0] ) != string::npos ) { |
---|
| 141 | // ??? |
---|
| 142 | } // if |
---|
| 143 | break; |
---|
| 144 | case ConstantNode::String: |
---|
| 145 | assert( false ); |
---|
| 146 | // array of char |
---|
| 147 | if ( string( "LUu" ).find( value[0] ) != string::npos ) { |
---|
| 148 | if ( value[0] == 'u' && value[1] == '8' ) { |
---|
| 149 | // ??? |
---|
| 150 | } else { |
---|
| 151 | // ??? |
---|
| 152 | } // if |
---|
| 153 | } // if |
---|
| 154 | break; |
---|
| 155 | } // switch |
---|
| 156 | return btype; |
---|
| 157 | } // literalType |
---|
| 158 | |
---|
[8e9cbb2] | 159 | |
---|
[ca35c51] | 160 | ConstantNode *makeConstant( ConstantNode::Type type, std::string *str ) { |
---|
| 161 | ::Type::Qualifiers emptyQualifiers; // no qualifiers on constants |
---|
| 162 | return new ConstantNode( new ConstantExpr( Constant( new BasicType( emptyQualifiers, literalType( type, *str ) ), *str ), nullptr ) ); |
---|
| 163 | } |
---|
| 164 | |
---|
| 165 | ConstantNode *makeConstantStr( ConstantNode::Type type, std::string *str ) { |
---|
| 166 | ::Type::Qualifiers emptyQualifiers; // no qualifiers on constants |
---|
| 167 | // string should probably be a primitive type |
---|
| 168 | ArrayType *at = new ArrayType( emptyQualifiers, new BasicType( emptyQualifiers, BasicType::Char ), |
---|
| 169 | new ConstantExpr( |
---|
| 170 | Constant( new BasicType( emptyQualifiers, BasicType::UnsignedInt ), |
---|
| 171 | toString( str->size()+1-2 ) ) ), // +1 for '\0' and -2 for '"' |
---|
| 172 | false, false ); |
---|
| 173 | return new ConstantNode( new ConstantExpr( Constant( at, *str ), nullptr ) ); |
---|
| 174 | } |
---|
| 175 | |
---|
| 176 | |
---|
[51b7345] | 177 | // Builder |
---|
| 178 | int ParseNode::indent_by = 4; |
---|
| 179 | |
---|
[e869d663] | 180 | ParseNode::ParseNode() : next( 0 ) {}; |
---|
| 181 | ParseNode::ParseNode( const string *name ) : name( *name ), next( 0 ) { delete name; } |
---|
| 182 | ParseNode::ParseNode( const string &name ) : name( name ), next( 0 ) { } |
---|
[51b7345] | 183 | |
---|
[59db689] | 184 | ParseNode::~ParseNode() { |
---|
[e869d663] | 185 | delete next; |
---|
[51b7345] | 186 | }; |
---|
| 187 | |
---|
[59db689] | 188 | ParseNode *ParseNode::get_last() { |
---|
[a08ba92] | 189 | ParseNode *current = this; |
---|
[51b7345] | 190 | |
---|
[a08ba92] | 191 | while ( current->get_link() != 0 ) |
---|
[3848e0e] | 192 | current = current->get_link(); |
---|
[51b7345] | 193 | |
---|
[a08ba92] | 194 | return current; |
---|
[51b7345] | 195 | } |
---|
| 196 | |
---|
[59db689] | 197 | ParseNode *ParseNode::set_link( ParseNode *next_ ) { |
---|
| 198 | if ( next_ == 0 ) return this; |
---|
[71bd8c6] | 199 | get_last()->next = next_; |
---|
[a08ba92] | 200 | return this; |
---|
[51b7345] | 201 | } |
---|
| 202 | |
---|
[a61fea9a] | 203 | void ParseNode::print( std::ostream &os, int indent ) const {} |
---|
[51b7345] | 204 | |
---|
| 205 | |
---|
[3848e0e] | 206 | void ParseNode::printList( std::ostream &os, int indent ) const { |
---|
[a08ba92] | 207 | print( os, indent ); |
---|
[51b7345] | 208 | |
---|
[a08ba92] | 209 | if ( next ) { |
---|
[a61fea9a] | 210 | next->printList( os, indent ); |
---|
[59db689] | 211 | } // if |
---|
[51b7345] | 212 | } |
---|
| 213 | |
---|
[3848e0e] | 214 | ParseNode &ParseNode::operator,( ParseNode &p ) { |
---|
[a08ba92] | 215 | set_link( &p ); |
---|
[51b7345] | 216 | |
---|
[a08ba92] | 217 | return *this; |
---|
[51b7345] | 218 | } |
---|
| 219 | |
---|
[bdd516a] | 220 | ParseNode *mkList( ParseNode &pn ) { |
---|
[a08ba92] | 221 | // it just relies on `operator,' to take care of the "arguments" and provides a nice interface to an awful-looking |
---|
| 222 | // address-of, rendering, for example (StatementNode *)(&(*$5 + *$7)) into (StatementNode *)mkList(($5, $7)) |
---|
| 223 | // (although "nice" is probably not the word) |
---|
| 224 | return &pn; |
---|
[51b7345] | 225 | } |
---|
| 226 | |
---|
| 227 | // Local Variables: // |
---|
[b87a5ed] | 228 | // tab-width: 4 // |
---|
| 229 | // mode: c++ // |
---|
| 230 | // compile-command: "make install" // |
---|
[51b7345] | 231 | // End: // |
---|