/*
* This file is part of cparser.
- * Copyright (C) 2007-2008 Matthias Braun <matze@braunis.de>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version 2
- * of the License, or (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
- * 02111-1307, USA.
+ * Copyright (C) 2012 Matthias Braun <matze@braunis.de>
*/
#include <config.h>
#include <assert.h>
#include <stdio.h>
+#include <stdbool.h>
#include "symbol.h"
#include "lang_features.h"
#include "adt/array.h"
+#include "adt/error.h"
+#include "adt/util.h"
-static symbol_t *token_symbols[T_LAST_TOKEN];
-static symbol_t *pp_token_symbols[TP_LAST_TOKEN];
+symbol_t *token_symbols[T_LAST_TOKEN];
-const source_position_t builtin_source_position = { "<built-in>", 0 };
+const position_t builtin_position = { "<built-in>", 0, 0, true };
-void init_tokens(void)
+static token_kind_t last_id;
+
+static symbol_t *intern_register_token(token_kind_t id, const char *string)
{
- symbol_t *symbol;
- int last_id = -2;
+ assert(id < T_LAST_TOKEN);
+ symbol_t *symbol = symbol_table_insert(string);
+ if (token_symbols[id] == NULL)
+ token_symbols[id] = symbol;
+ return symbol;
+}
- memset(token_symbols, 0, T_LAST_TOKEN * sizeof(token_symbols[0]));
- memset(pp_token_symbols, 0, TP_LAST_TOKEN * sizeof(pp_token_symbols[0]));
-
-#define T(mode,x,str,val) \
- if (T_##x > 255) { \
- assert(T_##x >= last_id); \
- last_id = T_##x; \
- } \
- if (c_mode & (mode)) { \
- assert(T_##x >= 0 && T_##x < T_LAST_TOKEN); \
- symbol = symbol_table_insert(str); \
- symbol->ID = T_##x; \
- if (token_symbols[T_##x] == NULL) \
- token_symbols[T_##x] = symbol; \
+static void register_token(unsigned mode, token_kind_t id, const char *string)
+{
+ if (id > 255) {
+ assert(id >= last_id);
+ last_id = id;
}
+ if (c_mode & mode) {
+ symbol_t *symbol = intern_register_token(id, string);
+ symbol->ID = id;
+ }
+}
-#define TS(x,str,val) \
- assert(T_##x >= 0 && T_##x < T_LAST_TOKEN); \
- symbol = symbol_table_insert(str); \
- if (token_symbols[T_##x] == NULL) \
- token_symbols[T_##x] = symbol; \
-
-#include "tokens.inc"
+static void register_pp_token(pp_token_kind_t const id, char const *const string)
+{
+ assert(id < TP_LAST_TOKEN);
+ symbol_t *const symbol = symbol_table_insert(string);
+ symbol->pp_ID = id;
+}
-#undef TS
-#undef T
+void init_tokens(void)
+{
+ static bool tokens_initialized = false;
+ if (tokens_initialized)
+ return;
+ tokens_initialized = true;
-#define T(mode,x,str,val) \
- if (c_mode & (mode)) { \
- assert(TP_##x >= 0 && TP_##x < TP_LAST_TOKEN); \
- symbol = symbol_table_insert(str); \
- symbol->pp_ID = TP_##x; \
- if (pp_token_symbols[TP_##x] == NULL) \
- pp_token_symbols[TP_##x] = symbol; \
- }
+ memset(token_symbols, 0, T_LAST_TOKEN * sizeof(token_symbols[0]));
-#define TS(x,str,val) \
- assert(TP_##x >= 0 && TP_##x < T_LAST_TOKEN); \
- symbol = symbol_table_insert(str); \
- if (pp_token_symbols[TP_##x] == NULL) \
- pp_token_symbols[TP_##x] = symbol;
+#define T(mode,x,str,val) register_token(mode, x, str);
+#include "tokens.inc"
+#undef T
+#define T(token) register_pp_token(TP_##token, #token);
#include "tokens_preprocessor.inc"
-
#undef T
}
{
}
-void print_token_type(FILE *f, token_type_t token_type)
+void print_token_kind(FILE *f, token_kind_t token_kind)
{
- if(token_type == T_EOF) {
- fputs("end of file", f);
- return;
- }
- if(token_type == T_ERROR) {
- fputs("error", f);
- return;
- }
-
- int token_symbols_len = T_LAST_TOKEN;
- if(token_type < 0 || token_type >= token_symbols_len) {
+ if (token_kind >= lengthof(token_symbols)) {
fputs("invalid token", f);
return;
}
- const symbol_t *symbol = token_symbols[token_type];
- if(symbol != NULL) {
- fprintf(f, "'%s'", symbol->string);
- } else {
- if(token_type >= 0 && token_type < 256) {
- fprintf(f, "'%c'", token_type);
- return;
- }
- fputs("unknown token", f);
+ fputs(token_symbols[token_kind]->string, f);
+}
+
+char const *get_string_encoding_prefix(string_encoding_t const enc)
+{
+ switch (enc) {
+ case STRING_ENCODING_CHAR: return "";
+ case STRING_ENCODING_CHAR16: return "u";
+ case STRING_ENCODING_CHAR32: return "U";
+ case STRING_ENCODING_UTF8: return "u8";
+ case STRING_ENCODING_WIDE: return "L";
}
+ panic("invalid string encoding");
}
void print_token(FILE *f, const token_t *token)
{
- switch(token->type) {
+ char delim = '\'';
+ char const *enc = "";
+ char const *val;
+ switch (token->kind) {
case T_IDENTIFIER:
- fprintf(f, "symbol '%s'", token->v.symbol->string);
- break;
- case T_INTEGER:
- fprintf(f, "integer number %lld", token->v.intvalue);
- break;
- case T_FLOATINGPOINT:
- fprintf(f, "floatingpointer number %LF", token->v.floatvalue);
+ case T_MACRO_PARAMETER:
+ case T_UNKNOWN_CHAR:
+ val = token->base.symbol->string;
break;
+
case T_STRING_LITERAL:
- fprintf(f, "string '%s'", token->v.string.begin); /* TODO suboptimal */
- break;
- default:
- print_token_type(f, (token_type_t)token->type);
+ delim = '"';
+ /* FALLTHROUGH */
+ case T_CHARACTER_CONSTANT:
+ enc = get_string_encoding_prefix(token->literal.string.encoding);
+ /* FALLTHROUGH */
+ case T_NUMBER:
+ val = token->literal.string.begin;
break;
- }
-}
-void print_pp_token_type(FILE *f, preprocessor_token_type_t token_type)
-{
- if(token_type == TP_EOF) {
- fputs("end of file", f);
+ default: {
+ char const *kind = (token->base.symbol ? token->base.symbol : token_symbols[token->kind])->string;
+ fprintf(f, "'%s'", kind);
return;
}
- if(token_type == TP_ERROR) {
- fputs("error", f);
- return;
- }
-
- int token_symbols_len = TP_LAST_TOKEN;
- if(token_type < 0 || token_type >= token_symbols_len) {
- fputs("invalid token", f);
- return;
- }
-
- const symbol_t *symbol = pp_token_symbols[token_type];
- if(symbol != NULL) {
- fprintf(f, "%s", symbol->string);
- } else {
- if(token_type >= 0 && token_type < 256) {
- fprintf(f, "%c", token_type);
- return;
- }
- fputs("unknown token", f);
}
+ fprintf(f, "%s %s%c%s%c", token_symbols[token->kind]->string, enc, delim, val, delim);
}
-void print_pp_token(FILE *f, const token_t *token)
+bool tokens_would_paste(token_kind_t token1, token_kind_t token2)
{
- switch((preprocessor_token_type_t) token->type) {
- case TP_IDENTIFIER:
- fprintf(f, "symbol '%s'", token->v.symbol->string);
- break;
- case TP_NUMBER:
- fprintf(f, "number %s", token->v.string.begin);
- break;
- case TP_STRING_LITERAL:
- fprintf(f, "string '%s'", token->v.string.begin);
- break;
+ char const c = token_symbols[token2]->string[0];
+
+ switch (token1) {
+ case '>': return c == '>' || c == '=';
+ case '<': return c == '<' || c == '=' || c == '%' || c == ':';
+ case '+': return c == '+' || c == '=';
+ case '-': return c == '-' || c == '>';
+ case '/': return c == '/' || c == '=' || c == '*';
+ case '%': return c == ':' || c == '=' || c == '>';
+ case '&': return c == '&' || c == '=';
+ case '|': return c == '|' || c == '=';
+ case ':': return c == ':' || c == '>';
+ case '*': return c == '*' || c == '=';
+ case '.': return c == '.' || c == '%' || token2 == T_NUMBER;
+ case '#': return c == '#' || c == '%';
+ case T_GREATERGREATER: return c == '=';
+ case T_LESSLESS: return c == '=';
+ case '^': return c == '=';
+ case '!': return c == '=';
+
+ case T_IDENTIFIER:
+ return token2 == T_CHARACTER_CONSTANT ||
+ token2 == T_IDENTIFIER ||
+ token2 == T_NUMBER ||
+ token2 == T_STRING_LITERAL; /* L */
+
+ case T_NUMBER:
+ return token2 == T_IDENTIFIER || token2 == T_NUMBER ||
+ token2 == '.' || token2 == '+' || token2 == '-';
+
default:
- print_pp_token_type(f, (preprocessor_token_type_t) token->type);
- break;
+ return false;
}
}
projects / cparser / blobdiff