X-Git-Url: http://nsz.repo.hu/git/?a=blobdiff_plain;f=token.c;h=183a0ca7af39aac3a31814a75e98a20bb2cbe75f;hb=127a634aa53da8c37ee50f365184cccad67df0d8;hp=50e166a2caec59581b46b74d7517c7c4918565b4;hpb=d5e8df5885f97ea65839f8970b8697549c207610;p=cparser diff --git a/token.c b/token.c index 50e166a..183a0ca 100644 --- a/token.c +++ b/token.c @@ -1,34 +1,97 @@ +/* + * This file is part of cparser. + * Copyright (C) 2007-2009 Matthias Braun + * + * 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. + */ #include #include "token_t.h" +#include "symbol_t.h" #include #include #include "symbol.h" +#include "lang_features.h" #include "adt/array.h" static symbol_t *token_symbols[T_LAST_TOKEN]; +static symbol_t *pp_token_symbols[TP_LAST_TOKEN]; -void init_tokens(void) +const source_position_t builtin_source_position = { "", 0, 0 }; + +static int last_id; + +static symbol_t *intern_register_token(token_kind_t id, const char *string) +{ + assert(0 <= id && id < T_LAST_TOKEN); + symbol_t *symbol = symbol_table_insert(string); + if (token_symbols[id] == NULL) + token_symbols[id] = symbol; + return symbol; +} + +static symbol_t *intern_register_pp_token(preprocessor_token_kind_t id, const char *string) { - symbol_t *symbol; + assert(0 <= id && id < TP_LAST_TOKEN); + symbol_t *symbol = symbol_table_insert(string); + if (pp_token_symbols[id] == NULL) + pp_token_symbols[id] = symbol; + return symbol; +} - memset(token_symbols, 0, T_LAST_TOKEN * sizeof(token_symbols[0])); +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; + } +} + +static void register_pp_token(unsigned mode, token_kind_t id, + const char *string) +{ + if (! (c_mode & mode)) + return; + + symbol_t *symbol = intern_register_pp_token(id, string); + symbol->pp_ID = id; +} -#define T(x,str,val) \ - assert(T_##x >= 0 && T_##x < T_LAST_TOKEN); \ - symbol = symbol_table_insert(str); \ - symbol->ID = T_##x; \ - token_symbols[T_##x] = symbol; +void init_tokens(void) +{ + 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 TS(x,str,val) \ - assert(T_##x >= 0 && T_##x < T_LAST_TOKEN); \ - symbol = symbol_table_insert(str); \ - token_symbols[T_##x] = symbol; + last_id = -2; +#define T(mode,x,str,val) register_token(mode, T_##x, str); +#define TS(x,str,val) intern_register_token(T_##x, str); #include "tokens.inc" +#undef TS +#undef T +#define T(mode,x,str,val) register_pp_token(mode, TP_##x, str); +#define TS(x,str,val) intern_register_pp_token(TP_##x, str); +#include "tokens_preprocessor.inc" #undef TS #undef T } @@ -37,45 +100,164 @@ void exit_tokens(void) { } -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 >= 0 && token_type < 256) { - fprintf(f, "'%c'", token_type); + if(token_kind == T_EOF) { + fputs("end of file", f); return; } - if(token_type == T_EOF) { - fputs("end of file", f); + if(token_kind == 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 < 0 || token_kind >= token_symbols_len) { fputs("invalid token", f); return; } - const symbol_t *symbol = token_symbols[token_type]; + const symbol_t *symbol = token_symbols[token_kind]; if(symbol != NULL) { fputs(symbol->string, f); } else { + if(token_kind >= 0 && token_kind < 256) { + fputc(token_kind, f); + return; + } fputs("unknown token", f); } } +symbol_t *get_token_kind_symbol(int kind) +{ + return token_symbols[kind]; +} + +static void print_stringrep(const string_t *string, FILE *f) +{ + for (size_t i = 0; i < string->size; ++i) { + fputc(string->begin[i], f); + } +} + void print_token(FILE *f, const token_t *token) { - switch(token->type) { + switch(token->kind) { case T_IDENTIFIER: - fprintf(f, "symbol '%s'", token->v.symbol->string); + fprintf(f, "identifier '%s'", token->identifier.symbol->string); break; case T_INTEGER: - fprintf(f, "integer number %d", token->v.intvalue); + case T_INTEGER_OCTAL: + case T_INTEGER_HEXADECIMAL: + case T_FLOATINGPOINT: + case T_FLOATINGPOINT_HEXADECIMAL: + print_token_kind(f, (token_kind_t)token->kind); + fputs(" '", f); + print_stringrep(&token->number.number, f); + if (token->number.suffix.size > 0) + print_stringrep(&token->number.suffix, f); + fputc('\'', f); break; + case T_WIDE_STRING_LITERAL: case T_STRING_LITERAL: - fprintf(f, "string '%s'", token->v.string); + print_token_kind(f, (token_kind_t)token->kind); + fprintf(f, " \"%s\"", token->string.string.begin); + break; + case T_CHARACTER_CONSTANT: + case T_WIDE_CHARACTER_CONSTANT: + print_token_kind(f, (token_kind_t)token->kind); + fputs(" \'", f); + print_stringrep(&token->string.string, f); + fputs("'", f); break; default: - print_token_type(f, token->type); + fputc('\'', f); + print_token_kind(f, (token_kind_t)token->kind); + fputc('\'', f); break; } } + +void print_pp_token_kind(FILE *f, int token_kind) +{ + if (token_kind == TP_EOF) { + fputs("end of file", f); + return; + } + if (token_kind == TP_ERROR) { + fputs("error", f); + return; + } + + int token_symbols_len = TP_LAST_TOKEN; + if (token_kind < 0 || token_kind >= token_symbols_len) { + fputs("invalid token", f); + return; + } + + const symbol_t *symbol = pp_token_symbols[token_kind]; + if (symbol != NULL) { + fputs(symbol->string, f); + } else { + if(token_kind >= 0 && token_kind < 256) { + fputc(token_kind, f); + return; + } + fputs("unknown token", f); + } +} + +void print_pp_token(FILE *f, const token_t *token) +{ + switch((preprocessor_token_kind_t) token->kind) { + case TP_IDENTIFIER: + fprintf(f, "identifier '%s'", token->identifier.symbol->string); + break; + case TP_NUMBER: + fprintf(f, "number '%s'", token->number.number.begin); + break; + case TP_STRING_LITERAL: + fprintf(f, "string \"%s\"", token->string.string.begin); + break; + default: + print_pp_token_kind(f, (preprocessor_token_kind_t) token->kind); + break; + } +} + +bool tokens_would_paste(preprocessor_token_kind_t token1, + preprocessor_token_kind_t token2) +{ + char c = token2 < 256 ? (char) token2 : pp_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 == TP_NUMBER; + case '#': return c == '#' || c == '%'; + case TP_GREATERGREATER: return c == '='; + case TP_LESSLESS: return c == '='; + case '^': return c == '='; + case '!': return c == '='; + case TP_IDENTIFIER: + return token2 == TP_IDENTIFIER || token2 == TP_NUMBER || + token2 == TP_CHARACTER_CONSTANT || + token2 == TP_WIDE_CHARACTER_CONSTANT || + token2 == TP_WIDE_STRING_LITERAL || + token2 == TP_STRING_LITERAL; /* L */ + case TP_NUMBER: + return token2 == TP_NUMBER || token2 == TP_IDENTIFIER || + token2 == '.' || token2 == '+' || token2 == '-'; + default: + return false; + } +}