2 * This file is part of cparser.
3 * Copyright (C) 2007-2009 Matthias Braun <matze@braunis.de>
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version 2
8 * of the License, or (at your option) any later version.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
29 #include "lang_features.h"
30 #include "adt/array.h"
31 #include "adt/error.h"
34 symbol_t *token_symbols[T_LAST_TOKEN];
36 const source_position_t builtin_source_position = { "<built-in>", 0, 0, true };
38 static token_kind_t last_id;
40 static symbol_t *intern_register_token(token_kind_t id, const char *string)
42 assert(id < T_LAST_TOKEN);
43 symbol_t *symbol = symbol_table_insert(string);
44 if (token_symbols[id] == NULL)
45 token_symbols[id] = symbol;
49 static void register_token(unsigned mode, token_kind_t id, const char *string)
52 assert(id >= last_id);
56 symbol_t *symbol = intern_register_token(id, string);
61 static void register_pp_token(pp_token_kind_t const id, char const *const string)
63 assert(id < TP_LAST_TOKEN);
64 symbol_t *const symbol = symbol_table_insert(string);
68 void init_tokens(void)
70 memset(token_symbols, 0, T_LAST_TOKEN * sizeof(token_symbols[0]));
72 #define T(mode,x,str,val) register_token(mode, T_##x, str);
73 #define TS(x,str,val) intern_register_token(T_##x, str);
78 #define T(token) register_pp_token(TP_##token, #token);
79 #include "tokens_preprocessor.inc"
83 void exit_tokens(void)
87 void print_token_kind(FILE *f, token_kind_t token_kind)
89 if (token_kind >= lengthof(token_symbols)) {
90 fputs("invalid token", f);
94 fputs(token_symbols[token_kind]->string, f);
97 char const *get_string_encoding_prefix(string_encoding_t const enc)
100 case STRING_ENCODING_CHAR: return "";
101 case STRING_ENCODING_WIDE: return "L";
103 panic("invalid string encoding");
106 void print_token(FILE *f, const token_t *token)
109 char const *enc = "";
111 switch (token->kind) {
114 val = token->base.symbol->string;
118 case T_STRING_LITERAL:
121 case T_CHARACTER_CONSTANT:
122 enc = get_string_encoding_prefix(token->literal.string.encoding);
125 val = token->literal.string.begin;
129 char const *kind = (token->base.symbol ? token->base.symbol : token_symbols[token->kind])->string;
130 fprintf(f, "'%s'", kind);
134 fprintf(f, "%s %s%c%s%c", token_symbols[token->kind]->string, enc, delim, val, delim);
137 bool tokens_would_paste(token_kind_t token1, token_kind_t token2)
139 char const c = token_symbols[token2]->string[0];
142 case '>': return c == '>' || c == '=';
143 case '<': return c == '<' || c == '=' || c == '%' || c == ':';
144 case '+': return c == '+' || c == '=';
145 case '-': return c == '-' || c == '>';
146 case '/': return c == '/' || c == '=' || c == '*';
147 case '%': return c == ':' || c == '=' || c == '>';
148 case '&': return c == '&' || c == '=';
149 case '|': return c == '|' || c == '=';
150 case ':': return c == ':' || c == '>';
151 case '*': return c == '*' || c == '=';
152 case '.': return c == '.' || c == '%' || token2 == T_NUMBER;
153 case '#': return c == '#' || c == '%';
154 case T_GREATERGREATER: return c == '=';
155 case T_LESSLESS: return c == '=';
156 case '^': return c == '=';
157 case '!': return c == '=';
160 return token2 == T_CHARACTER_CONSTANT ||
161 token2 == T_IDENTIFIER ||
162 token2 == T_NUMBER ||
163 token2 == T_STRING_LITERAL; /* L */
166 return token2 == T_IDENTIFIER || token2 == T_NUMBER ||
167 token2 == '.' || token2 == '+' || token2 == '-';