mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-27 14:42:07 +00:00
3e38c4aa48
qfcc now does local common subexpression elimination. It seems to work, but is optional (default off): use -O to enable. Also, uninitialized variable detection is finally back :) The progs engine now has very basic valgrind-like functionality for checking pointer accesses. Enable with pr_boundscheck 2
392 lines
10 KiB
Text
392 lines
10 KiB
Text
%{
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/*
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qc-lex.l
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lexer for quakec
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Copyright (C) 2001 Bill Currie <bill@taniwha.org>
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Author: Bill Currie <bill@taniwha.org>
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Date: 2001/06/12
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#include <stdlib.h>
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#include <ctype.h>
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#include <QF/dstring.h>
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#include <QF/hash.h>
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#include <QF/sys.h>
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#include "class.h"
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#include "debug.h"
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#include "diagnostic.h"
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#include "expr.h"
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#include "grab.h"
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#include "options.h"
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#include "pragma.h"
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#include "qfcc.h"
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#include "shared.h"
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#include "strpool.h"
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#include "struct.h"
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#include "symtab.h"
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#include "type.h"
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#include "value.h"
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#include "qc-parse.h"
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#ifndef YY_PROTO
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# define YY_PROTO(x) x
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#else
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# define YY_FLEX_REALLOC_HACK
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#endif
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int yyget_lineno (void);
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FILE *yyget_in (void);
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FILE *yyget_out (void);
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int yyget_leng (void);
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char *yyget_text (void);
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void yyset_lineno (int line_number);
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void yyset_in (FILE * in_str);
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void yyset_out (FILE * out_str);
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int yyget_debug (void);
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void yyset_debug (int bdebug);
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int yylex_destroy (void);
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#define YY_NO_UNPUT
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#define YY_DECL int yylex YY_PROTO(( void ))
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YY_DECL;
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static int keyword_or_id (char *token);
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extern QC_YYSTYPE qc_yylval;
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%}
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s [ \t]
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m [\-+]
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D [0-9]
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X [0-9a-fA-F]
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ID [a-zA-Z_][a-zA-Z_0-9]*
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FLOAT ({D}+|{D}*\.{D}+|{D}+\.{D}*)([eE]{m}?{D}+)?
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INT ({D}+|0[xX]{X}+)
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RANGE \.\.
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ELLIPSIS \.\.\.
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FRAMEID {ID}(\.{ID})*
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PRAGMAID {ID}(-{ID})*
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STRING \"(\\.|[^"\\])*\"
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%x GRAB_FRAME GRAB_OTHER GRAB_WRITE COMMENT PRAGMA
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%%
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grab_frame = GRAB_FRAME;
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grab_other = GRAB_OTHER;
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grab_write = GRAB_WRITE;
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"/*" { BEGIN (COMMENT); }
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<COMMENT>"/*" { warning (0, "nested /* in comment"); }
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<COMMENT>"*/" { BEGIN (INITIAL); }
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<COMMENT>\r*\n { pr.source_line++; }
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<COMMENT>. /* nothing to do */
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<COMMENT><<EOF>> { error (0, "EOF in comment"); return 0; }
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"//".* /* nothing to do */
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^#{s}+{D}+{s}+\"(\.|[^"\n])*\".*$ { line_info (yytext + 1); }
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^#line{s}+{D}+{s}+\"(\.|[^"\n])*\".*$ { line_info (yytext + 5); }
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^{s}*#{s}*pragma{s}+ { BEGIN (PRAGMA); }
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{INT}+[uU]? {
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const char *c = yytext + yyleng - 1;
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int i = strtol (yytext, 0, 0);
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if (*c == 'u' || *c == 'U')
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qc_yylval.expr = new_integer_expr (i);//FIXME
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else
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qc_yylval.expr = new_integer_expr (i);
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return CONST;
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}
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{FLOAT} {
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float f = strtof (yytext, 0);
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qc_yylval.expr = new_float_expr (f);
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return CONST;
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}
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{ID} {
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int tok = keyword_or_id(yytext);
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return tok;
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}
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@{ID} {
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int tok = keyword_or_id(yytext);
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if (tok == '@')
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REJECT;
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return tok;
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}
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{STRING} {
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const char *s = make_string (yytext, 0);
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qc_yylval.expr = new_string_expr (s);
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return STRING;
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}
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@ return '@';
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'{s}*{m}?{FLOAT}{s}+{m}?{FLOAT}{s}+{m}?{FLOAT}{s}*' {
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vec3_t v;
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sscanf (yytext, "' %f %f %f '",
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&v[0], &v[1], &v[2]);
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qc_yylval.expr = new_vector_expr (v);
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return CONST;
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}
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'{s}*{m}?{FLOAT}{s}+{m}?{FLOAT}{s}+{m}?{FLOAT}{s}+{m}?{FLOAT}{s}*' {
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quat_t q;
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sscanf (yytext, "' %f %f %f %f'",
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&q[0], &q[1], &q[2], &q[3]);
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qc_yylval.expr = new_quaternion_expr (q);
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return CONST;
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}
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'(\\[^xX0-7\r\n]|[^'\r\n]|\\[xX][0-9A-Fa-f]+|\\[0-7]+)*' {
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const char *str = make_string (yytext, 0);
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if (str[1])
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warning (0, "multibyte char constant");
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qc_yylval.expr = new_integer_expr (*str);
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return CONST;
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}
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[+\-*/&|^%]= {
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qc_yylval.op = yytext[0];
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return ASX;
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}
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"<<=" {
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qc_yylval.op = SHL;
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return ASX;
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}
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">>=" {
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qc_yylval.op = SHR;
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return ASX;
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}
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[!(){}.*/&|^~+\-=\[\];,#%?:] {
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qc_yylval.pointer = 0; // ensure pointer vals are null
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return yytext[0];
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}
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{ELLIPSIS} return ELLIPSIS;
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"<<" return SHL;
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">>" return SHR;
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"&&" return AND;
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"||" return OR;
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"==" return EQ;
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"!=" return NE;
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"<=" return LE;
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">=" return GE;
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"<" return LT;
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">" return GT;
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"++" {
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qc_yylval.op = '+';
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return INCOP;
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}
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"--" {
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qc_yylval.op = '-';
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return INCOP;
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}
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"$"{s}*{FRAMEID} {
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int ret = do_grab (yytext);
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if (ret >= 0) {
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qc_yylval.expr = new_integer_expr (ret);
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return CONST;
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} else {
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BEGIN (-ret);
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}
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}
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<GRAB_FRAME>{FRAMEID} add_frame_macro (yytext);
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<GRAB_OTHER>[^\r\n]* /* skip */
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<GRAB_WRITE>{STRING} {
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const char *s = make_string (yytext, 0);
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write_frame_macros (s);
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BEGIN (GRAB_OTHER); // ignore rest of line
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}
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<PRAGMA>{ID} { pragma (yytext); }
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<*>\r*\n {
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pr.source_line++;
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BEGIN (INITIAL);
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}
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<*>{s}* /* skip */
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<*>. error (0, "all your typo are belong to us");
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%%
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int
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yywrap (void)
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{
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return 1;
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}
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typedef struct {
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const char *name;
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int value;
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type_t *type;
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int traditional;
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unsigned version;
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int objc;
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} keyword_t;
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static keyword_t keywords[] = {
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{"void", TYPE, &type_void, 2, PROG_ID_VERSION, 0},
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{"float", TYPE, &type_float, 2, PROG_ID_VERSION, 0},
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{"string", TYPE, &type_string, 2, PROG_ID_VERSION, 0},
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{"vector", TYPE, &type_vector, 2, PROG_ID_VERSION, 0},
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{"entity", TYPE, &type_entity, 2, PROG_ID_VERSION, 0},
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{"quaternion", TYPE, &type_quaternion, 0, PROG_VERSION, 0},
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{"int", TYPE, &type_integer, 0, PROG_VERSION, 0},
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{"unsigned", TYPE, &type_integer, 0, PROG_VERSION, 0},//FIXME
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{"function", TYPE, &type_function, 0, PROG_VERSION, 0},
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{"id", TYPE, &type_id, 0, PROG_VERSION, 1},
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{"Class", TYPE, &type_Class, 0, PROG_VERSION, 1},
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// {"Protocol", TYPE, &type_Protocol, 0, PROG_VERSION, 0},
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{"Method", TYPE, &type_obj_method, 0, PROG_VERSION, 1},
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{"Super", TYPE, &type_obj_super, 0, PROG_VERSION, 1},
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{"SEL", TYPE, &type_SEL, 0, PROG_VERSION, 1},
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{"IMP", TYPE, &type_IMP, 0, PROG_VERSION, 1},
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{"local", LOCAL, 0, 2, PROG_ID_VERSION, 0},
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{"return", RETURN, 0, 2, PROG_ID_VERSION, 0},
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{"while", WHILE, 0, 2, PROG_ID_VERSION, 0},
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{"do", DO, 0, 2, PROG_ID_VERSION, 0},
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{"if", IF, 0, 2, PROG_ID_VERSION, 0},
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{"else", ELSE, 0, 2, PROG_ID_VERSION, 0},
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{"for", FOR, 0, 1, PROG_ID_VERSION, 0},
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{"break", BREAK, 0, 2, PROG_ID_VERSION, 0},
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{"continue", CONTINUE, 0, 1, PROG_ID_VERSION, 0},
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{"switch", SWITCH, 0, 1, PROG_ID_VERSION, 0},
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{"case", CASE, 0, 1, PROG_ID_VERSION, 0},
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{"default", DEFAULT, 0, 1, PROG_ID_VERSION, 0},
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{"nil", NIL, 0, 0, PROG_ID_VERSION, 0},
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{"@nil", NIL, 0, 2, PROG_ID_VERSION, 0},
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{"struct", STRUCT, 0, 0, PROG_VERSION, 0},
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{"union", STRUCT, 0, 0, PROG_VERSION, 0},
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{"enum", ENUM, 0, 0, PROG_ID_VERSION, 0},
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{"typedef", TYPEDEF, 0, 0, PROG_ID_VERSION, 0},
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// this is a hack to trigger the initialization of the class
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// sytem if they are seen before any other Objective-QC symbol
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{"obj_module", 0, 0, 0, PROG_VERSION, 1},
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{"@class", CLASS, 0, 0, PROG_VERSION, 1},
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{"@defs", DEFS, 0, 0, PROG_VERSION, 1},
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{"@encode", ENCODE, 0, 0, PROG_VERSION, 1},
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{"@end", END, 0, 0, PROG_VERSION, 1},
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{"@implementation", IMPLEMENTATION, 0, 0, PROG_VERSION, 1},
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{"@interface", INTERFACE, 0, 0, PROG_VERSION, 1},
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{"@private", PRIVATE, 0, 0, PROG_VERSION, 1},
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{"@protected", PROTECTED, 0, 0, PROG_VERSION, 1},
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{"@protocol", PROTOCOL, 0, 0, PROG_VERSION, 1},
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{"@public", PUBLIC, 0, 0, PROG_VERSION, 1},
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{"@reference", REFERENCE, 0, 0, PROG_VERSION, 1},
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{"@selector", SELECTOR, 0, 0, PROG_VERSION, 1},
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{"@self", SELF, 0, 0, PROG_VERSION, 1},
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{"@this", THIS, 0, 0, PROG_VERSION, 1},
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{"@args", ARGS, 0, 0, PROG_VERSION, 0},
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{"@va_list", TYPE, &type_va_list, 0, PROG_VERSION, 0},
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{"@param", TYPE, &type_param, 0, PROG_VERSION, 0},
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{"@extern", EXTERN, 0, 1, PROG_ID_VERSION, 0},
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{"@static", STATIC, 0, 1, PROG_ID_VERSION, 0},
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{"@system", SYSTEM, 0, 1, PROG_ID_VERSION, 0},
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{"@sizeof", SIZEOF, 0, 0, PROG_VERSION, 0},
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{"@overload", OVERLOAD, 0, 0, PROG_VERSION, 0},
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};
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static const char *
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keyword_get_key (const void *kw, void *unused)
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{
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return ((keyword_t*)kw)->name;
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}
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static int
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keyword_or_id (char *token)
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{
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static hashtab_t *keyword_tab;
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keyword_t *keyword;
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symbol_t *sym;
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if (!keyword_tab) {
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size_t i;
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keyword_tab = Hash_NewTable (1021, keyword_get_key, 0, 0);
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for (i = 0; i < sizeof (keywords) / sizeof (keywords[0]); i++)
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if (keywords[i].traditional >= options.traditional
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&& keywords[i].version <= options.code.progsversion)
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Hash_Add (keyword_tab, &keywords[i]);
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}
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keyword = Hash_Find (keyword_tab, token);
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if (keyword) {
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if (!options.traditional && keyword->objc && !obj_initialized)
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class_init ();
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if (keyword->value) {
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if (keyword->value == STRUCT) {
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qc_yylval.op = token[0];
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} else {
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qc_yylval.type = 0;
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qc_yylval.type = keyword->type;
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}
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return keyword->value;
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}
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}
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if (token[0] == '@') {
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return '@';
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}
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sym = symtab_lookup (current_symtab, token);
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if (!sym)
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sym = new_symbol (token);
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qc_yylval.symbol = sym;
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if (sym->sy_type == sy_type)
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return TYPE_NAME;
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if (sym->sy_type == sy_class)
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return CLASS_NAME;
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return NAME;
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}
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#ifdef YY_FLEX_REALLOC_HACK
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static __attribute__ ((used)) void *(*const yy_flex_realloc_hack)(void *,yy_size_t) = yy_flex_realloc;
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#else
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static __attribute__ ((used)) void (*yyunput_hack)(int, char*) = yyunput;
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static __attribute__ ((used)) int (*input_hack)(void) = input;
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#endif
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