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quakeforge/tools/qfcc/source/qc-lex.l
Bill Currie 4192ef835c Delay initialization of obj_module_t as long as possible. 
This keeps the type descriptor out of progs that never use any
Objective-QC features.
2011-03-04 08:25:50 +09:00

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%{
/*
qc-lex.l
lexer for quakec
Copyright (C) 2001 Bill Currie <bill@taniwha.org>
Author: Bill Currie <bill@taniwha.org>
Date: 2001/06/12
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:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
static __attribute__ ((used)) const char rcsid[] =
"$Id$";
#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <stdlib.h>
#include <ctype.h>
#include <QF/dstring.h>
#include <QF/hash.h>
#include <QF/sys.h>
#include "class.h"
#include "debug.h"
#include "diagnostic.h"
#include "expr.h"
#include "grab.h"
#include "immediate.h"
#include "options.h"
#include "qfcc.h"
#include "strpool.h"
#include "struct.h"
#include "symtab.h"
#include "type.h"
#include "qc-parse.h"
#ifndef YY_PROTO
# define YY_PROTO(x) x
#else
# define YY_FLEX_REALLOC_HACK
#endif
int yyget_lineno (void);
FILE *yyget_in (void);
FILE *yyget_out (void);
int yyget_leng (void);
char *yyget_text (void);
void yyset_lineno (int line_number);
void yyset_in (FILE * in_str);
void yyset_out (FILE * out_str);
int yyget_debug (void);
void yyset_debug (int bdebug);
int yylex_destroy (void);
#define YY_NO_UNPUT
#define YY_DECL int yylex YY_PROTO(( void ))
YY_DECL;
static int keyword_or_id (char *token);
extern YYSTYPE yylval;
%}
s [ \t]
m [\-+]
D [0-9]
X [0-9a-fA-F]
ID [a-zA-Z_][a-zA-Z_0-9]*
FLOAT ({D}+|{D}*\.{D}+|{D}+\.{D}*)([eE]{m}?{D}+)?
INT ({D}+|0[xX]{X}+)
RANGE \.\.
ELLIPSIS \.\.\.
FRAMEID {ID}(\.{ID})*
STRING \"(\\.|[^"\\])*\"
%x GRAB_FRAME GRAB_OTHER COMMENT
%%
grab_frame = GRAB_FRAME;
grab_other = GRAB_OTHER;
"/*" { BEGIN (COMMENT); }
<COMMENT>"/*" { warning (0, "nested /* in comment"); }
<COMMENT>"*/" { BEGIN (INITIAL); }
<COMMENT>\r*\n { pr.source_line++; }
<COMMENT>. /* nothing to do */
<COMMENT><<EOF>> { error (0, "EOF in comment"); return 0; }
"//".* /* nothing to do */
^#{s}+{D}+{s}+\"(\.|[^"\n])*\".*$ { line_info (yytext + 1); }
^#line{s}+{D}+{s}+\"(\.|[^"\n])*\".*$ { line_info (yytext + 5); }
^{s}*#{s}*pragma.*$ /* skip */
{INT}+[uU]? {
const char *c = yytext + yyleng - 1;
int i = strtol (yytext, 0, 0);
if (*c == 'u' || *c == 'U')
yylval.expr = new_integer_expr (i);//FIXME
else
yylval.expr = new_integer_expr (i);
return CONST;
}
{FLOAT} {
float f = strtof (yytext, 0);
yylval.expr = new_float_expr (f);
return CONST;
}
{ID} {
int tok = keyword_or_id(yytext);
return tok;
}
@{ID} {
int tok = keyword_or_id(yytext);
if (tok == '@')
REJECT;
return tok;
}
{STRING} {
const char *s = make_string (yytext, 0);
yylval.expr = new_string_expr (s);
return STRING;
}
@ return '@';
'{s}*{m}?{FLOAT}{s}+{m}?{FLOAT}{s}+{m}?{FLOAT}{s}*' {
vec3_t v;
sscanf (yytext, "' %f %f %f '",
&v[0], &v[1], &v[2]);
yylval.expr = new_vector_expr (v);
return CONST;
}
'{s}*{m}?{FLOAT}{s}+{m}?{FLOAT}{s}+{m}?{FLOAT}{s}+{m}?{FLOAT}{s}*' {
quat_t q;
sscanf (yytext, "' %f %f %f %f'",
&q[0], &q[1], &q[2], &q[3]);
yylval.expr = new_quaternion_expr (q);
return CONST;
}
'(\\[^xX0-7\r\n]|[^'\r\n]|\\[xX][0-9A-Fa-f]+|\\[0-7]+)*' {
const char *str = make_string (yytext, 0);
if (str[1])
warning (0, "multibyte char constant");
yylval.expr = new_integer_expr (*str);
return CONST;
}
[+\-*/&|^%]= {
yylval.op = yytext[0];
return ASX;
}
"<<=" {
yylval.op = SHL;
return ASX;
}
">>=" {
yylval.op = SHR;
return ASX;
}
[!(){}.*/&|^~+\-=\[\];,#%?:] {
yylval.pointer = 0; // ensure pointer values are null
return yytext[0];
}
{ELLIPSIS} return ELLIPSIS;
"<<" return SHL;
">>" return SHR;
"&&" return AND;
"||" return OR;
"==" return EQ;
"!=" return NE;
"<=" return LE;
">=" return GE;
"<" return LT;
">" return GT;
"++" {
yylval.op = '+';
return INCOP;
}
"--" {
yylval.op = '-';
return INCOP;
}
"$"{s}*{FRAMEID} {
int ret = do_grab (yytext);
if (ret >= 0) {
yylval.expr = new_integer_expr (ret);
return CONST;
} else {
BEGIN (-ret);
}
}
<GRAB_FRAME>{FRAMEID} add_frame_macro (yytext);
<GRAB_OTHER>[^\r\n]* /* skip */
<*>\r*\n {
pr.source_line++;
BEGIN (INITIAL);
}
<*>{s}* /* skip */
<*>. error (0, "all your typo are belong to us");
%%
int
yywrap (void)
{
return 1;
}
typedef struct {
const char *name;
int value;
type_t *type;
unsigned int traditional;
unsigned int version;
int objc;
} keyword_t;
static keyword_t keywords[] = {
{"void", TYPE, &type_void, 1, PROG_ID_VERSION, 0},
{"float", TYPE, &type_float, 1, PROG_ID_VERSION, 0},
{"string", TYPE, &type_string, 1, PROG_ID_VERSION, 0},
{"vector", TYPE, &type_vector, 1, PROG_ID_VERSION, 0},
{"entity", TYPE, &type_entity, 1, PROG_ID_VERSION, 0},
{"quaternion", TYPE, &type_quaternion, 0, PROG_VERSION, 0},
{"integer", TYPE, &type_integer, 0, PROG_VERSION, 0},
{"unsigned", TYPE, &type_integer, 0, PROG_VERSION, 0},//FIXME
{"function", TYPE, &type_function, 0, PROG_VERSION, 0},
{"id", TYPE, &type_id, 0, PROG_VERSION, 1},
{"Class", TYPE, &type_ClassPtr, 0, PROG_VERSION, 1},//FIXME
// {"Protocol", TYPE, &type_Protocol, 0, PROG_VERSION, 0},
{"Method", TYPE, &type_Method, 0, PROG_VERSION, 1},
{"Super", TYPE, &type_Super, 0, PROG_VERSION, 1},
{"SEL", TYPE, &type_SEL, 0, PROG_VERSION, 1},
{"IMP", TYPE, &type_IMP, 0, PROG_VERSION, 1},
{"local", LOCAL, 0, 1, PROG_ID_VERSION, 0},
{"return", RETURN, 0, 1, PROG_ID_VERSION, 0},
{"while", WHILE, 0, 1, PROG_ID_VERSION, 0},
{"do", DO, 0, 1, PROG_ID_VERSION, 0},
{"if", IF, 0, 1, PROG_ID_VERSION, 0},
{"else", ELSE, 0, 1, PROG_ID_VERSION, 0},
{"for", FOR, 0, 0, PROG_ID_VERSION, 0},
{"break", BREAK, 0, 1, PROG_ID_VERSION, 0},
{"continue", CONTINUE, 0, 0, PROG_ID_VERSION, 0},
{"switch", SWITCH, 0, 0, PROG_ID_VERSION, 0},
{"case", CASE, 0, 0, PROG_ID_VERSION, 0},
{"default", DEFAULT, 0, 0, PROG_ID_VERSION, 0},
{"nil", NIL, 0, 0, PROG_ID_VERSION, 0},
{"struct", STRUCT, 0, 0, PROG_VERSION, 0},
{"union", STRUCT, 0, 0, PROG_VERSION, 0},
{"enum", ENUM, 0, 0, PROG_ID_VERSION, 0},
{"typedef", TYPEDEF, 0, 0, PROG_ID_VERSION, 0},
// these two are a hack to trigger the initialization of the class
// sytem if they are seen before any other Objective-QC symbol
{"obj_module_s", 0, 0, 0, PROG_VERSION, 1},
{"obj_module_t", 0, 0, 0, PROG_VERSION, 1},
{"@class", CLASS, 0, 0, PROG_VERSION, 1},
{"@defs", DEFS, 0, 0, PROG_VERSION, 1},
{"@encode", ENCODE, 0, 0, PROG_VERSION, 1},
{"@end", END, 0, 0, PROG_VERSION, 1},
{"@implementation", IMPLEMENTATION, 0, 0, PROG_VERSION, 1},
{"@interface", INTERFACE, 0, 0, PROG_VERSION, 1},
{"@private", PRIVATE, 0, 0, PROG_VERSION, 1},
{"@protected", PROTECTED, 0, 0, PROG_VERSION, 1},
{"@protocol", PROTOCOL, 0, 0, PROG_VERSION, 1},
{"@public", PUBLIC, 0, 0, PROG_VERSION, 1},
{"@reference", REFERENCE, 0, 0, PROG_VERSION, 1},
{"@selector", SELECTOR, 0, 0, PROG_VERSION, 1},
{"@self", SELF, 0, 0, PROG_VERSION, 1},
{"@this", THIS, 0, 0, PROG_VERSION, 1},
{"@args", ARGS, 0, 0, PROG_VERSION, 0},
{"@va_list", TYPE, &type_va_list, 0, PROG_VERSION, 0},
{"@param", TYPE, &type_param, 0, PROG_VERSION, 0},
{"@extern", EXTERN, 0, 1, PROG_ID_VERSION, 0},
{"@static", STATIC, 0, 1, PROG_ID_VERSION, 0},
{"@system", SYSTEM, 0, 1, PROG_ID_VERSION, 0},
{"@sizeof", SIZEOF, 0, 0, PROG_VERSION, 0},
{"@overload", OVERLOAD, 0, 0, PROG_VERSION, 0},
};
static const char *
keyword_get_key (void *kw, void *unused)
{
return ((keyword_t*)kw)->name;
}
static int
keyword_or_id (char *token)
{
static hashtab_t *keyword_tab;
keyword_t *keyword;
symbol_t *sym;
if (!keyword_tab) {
size_t i;
keyword_tab = Hash_NewTable (1021, keyword_get_key, 0, 0);
for (i = 0; i < sizeof (keywords) / sizeof (keywords[0]); i++)
if (keywords[i].traditional >= options.traditional
&& keywords[i].version <= options.code.progsversion)
Hash_Add (keyword_tab, &keywords[i]);
}
keyword = Hash_Find (keyword_tab, token);
if (keyword) {
if (!options.traditional && keyword->objc && !class_Class.super_class)
class_init ();
if (keyword->value) {
if (keyword->value == STRUCT) {
yylval.op = token[0];
} else {
yylval.type = 0;
yylval.type = keyword->type;
}
return keyword->value;
}
}
if (token[0] == '@') {
return '@';
}
sym = symtab_lookup (current_symtab, token);
if (!sym)
sym = new_symbol (token);
yylval.symbol = sym;
if (sym->sy_type == sy_type)
return TYPE_NAME;
if (sym->sy_type == sy_class)
return CLASS_NAME;
return NAME;
}
#ifdef YY_FLEX_REALLOC_HACK
static __attribute__ ((used)) void *(*const yy_flex_realloc_hack)(void *,yy_size_t) = yy_flex_realloc;
#else
static __attribute__ ((used)) void (*yyunput_hack)(int, char*) = yyunput;
static __attribute__ ((used)) int (*input_hack)(void) = input;
#endif
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