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 |
---|
11 | // Last Modified By : Peter A. Buhr |
---|
12 | // Last Modified On : Thu Jun 30 13:30:43 2016 |
---|
13 | // Update Count : 50 |
---|
14 | // |
---|
15 | |
---|
16 | #include <climits> |
---|
17 | #include "ParseNode.h" |
---|
18 | using namespace std; |
---|
19 | |
---|
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 | |
---|
159 | ConstantNode *makeConstant( ConstantNode::Type type, std::string *str ) { |
---|
160 | ::Type::Qualifiers emptyQualifiers; // no qualifiers on constants |
---|
161 | return new ConstantNode( new ConstantExpr( Constant( new BasicType( emptyQualifiers, literalType( type, *str ) ), *str ), nullptr ) ); |
---|
162 | } |
---|
163 | |
---|
164 | ConstantNode *makeConstantStr( ConstantNode::Type type, std::string *str ) { |
---|
165 | ::Type::Qualifiers emptyQualifiers; // no qualifiers on constants |
---|
166 | // string should probably be a primitive type |
---|
167 | ArrayType *at = new ArrayType( emptyQualifiers, new BasicType( emptyQualifiers, BasicType::Char ), |
---|
168 | new ConstantExpr( |
---|
169 | Constant( new BasicType( emptyQualifiers, BasicType::UnsignedInt ), |
---|
170 | toString( str->size()+1-2 ) ) ), // +1 for '\0' and -2 for '"' |
---|
171 | false, false ); |
---|
172 | return new ConstantNode( new ConstantExpr( Constant( at, *str ), nullptr ) ); |
---|
173 | } |
---|
174 | |
---|
175 | |
---|
176 | // Builder |
---|
177 | int ParseNode::indent_by = 4; |
---|
178 | |
---|
179 | ParseNode::ParseNode() : next( 0 ) {}; |
---|
180 | ParseNode::ParseNode( const string *name ) : name( *name ), next( 0 ) { delete name; } |
---|
181 | ParseNode::ParseNode( const string &name ) : name( name ), next( 0 ) { } |
---|
182 | |
---|
183 | ParseNode::~ParseNode() { |
---|
184 | delete next; |
---|
185 | }; |
---|
186 | |
---|
187 | ParseNode *ParseNode::get_link() const { |
---|
188 | return next; |
---|
189 | } |
---|
190 | |
---|
191 | ParseNode *ParseNode::get_last() { |
---|
192 | ParseNode *current = this; |
---|
193 | |
---|
194 | while ( current->get_link() != 0 ) |
---|
195 | current = current->get_link(); |
---|
196 | |
---|
197 | return current; |
---|
198 | } |
---|
199 | |
---|
200 | ParseNode *ParseNode::set_link( ParseNode *next_ ) { |
---|
201 | if ( next_ == 0 ) return this; |
---|
202 | |
---|
203 | get_last()->next = next_; |
---|
204 | |
---|
205 | return this; |
---|
206 | } |
---|
207 | |
---|
208 | void ParseNode::print( std::ostream &os, int indent ) const {} |
---|
209 | |
---|
210 | |
---|
211 | void ParseNode::printList( std::ostream &os, int indent ) const { |
---|
212 | print( os, indent ); |
---|
213 | |
---|
214 | if ( next ) { |
---|
215 | next->printList( os, indent ); |
---|
216 | } // if |
---|
217 | } |
---|
218 | |
---|
219 | ParseNode &ParseNode::operator,( ParseNode &p ) { |
---|
220 | set_link( &p ); |
---|
221 | |
---|
222 | return *this; |
---|
223 | } |
---|
224 | |
---|
225 | ParseNode *mkList( ParseNode &pn ) { |
---|
226 | // it just relies on `operator,' to take care of the "arguments" and provides a nice interface to an awful-looking |
---|
227 | // address-of, rendering, for example (StatementNode *)(&(*$5 + *$7)) into (StatementNode *)mkList(($5, $7)) |
---|
228 | // (although "nice" is probably not the word) |
---|
229 | return &pn; |
---|
230 | } |
---|
231 | |
---|
232 | // Local Variables: // |
---|
233 | // tab-width: 4 // |
---|
234 | // mode: c++ // |
---|
235 | // compile-command: "make install" // |
---|
236 | // End: // |
---|