mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-06 13:11:20 +00:00
487 lines
9.6 KiB
Text
487 lines
9.6 KiB
Text
%{
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/*
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#FILENAME#
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#DESCRIPTION#
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Copyright (C) 2001 #AUTHOR#
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Author: #AUTHOR#
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Date: #DATE#
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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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static const char rcsid[] =
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"$Id$";
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#include <QF/hash.h>
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#include <QF/sys.h>
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#include "qfcc.h"
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#include "scope.h"
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#include "struct.h"
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#include "type.h"
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#include "qc-parse.h"
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#define YY_NO_UNPUT
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int type_or_name (char *token);
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int do_grab (char *token);
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void add_frame_macro (char *token);
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char *make_string (char *token);
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extern YYSTYPE yylval;
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%}
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DIGIT [0-9]
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ID [a-zA-Z_][a-zA-Z_0-9]*
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FLOAT {DIGIT}+"."{DIGIT}*
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NUM ({DIGIT}+("."{DIGIT}*)?)
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s [ \t]
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m ([\-+]?)
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%x grab_frame grab_other
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%%
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"/*" {
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int c;
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do {
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while ((c = input ()) != '*' && c != EOF
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&& c != '\n')
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;
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while (c == '*')
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c = input ();
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if (c == EOF)
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error (0, "EOF in comment");
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if (c == '\n')
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pr_source_line++;
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} while (c != '/' && c != EOF);
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}
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"//".* /* nothing to do */
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{DIGIT}+ {
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yylval.integer_val = atoi (yytext);
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return INT_VAL;
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}
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{FLOAT}* {
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yylval.float_val = atof (yytext);
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return FLOAT_VAL;
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}
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{ID} return type_or_name(yytext);
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\"(\\.|[^"])*\" {
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yylval.string_val = make_string (yytext);
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return STRING_VAL;
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}
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'{s}*{m}{NUM}{s}+{m}{NUM}{s}+{m}{NUM}{s}*' {
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sscanf (yytext, "' %f %f %f '",
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&yylval.vector_val[0], &yylval.vector_val[1],
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&yylval.vector_val[2]);
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return VECTOR_VAL;
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}
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'{s}*{m}{NUM}{s}+{m}{NUM}{s}+{m}{NUM}{s}+{m}{NUM}{s}*' {
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sscanf (yytext, "' %f %f %f %f '",
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&yylval.vector_val[0], &yylval.vector_val[1],
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&yylval.vector_val[2], &yylval.vector_val[3]);
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return QUATERNION_VAL;
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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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char *str = make_string (yytext);
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if (str[1])
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warning (0, "multibyte char constant");
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yylval.integer_val = *str;
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free (str);
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return INT_VAL;
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}
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^#{s}+{DIGIT}+{s}+\"(\.|[^"\n])*\".*$ {
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char *p;
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char *s;
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int line;
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p = yytext + 1;
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line = strtol (p, &s, 10);
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p = s;
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while (isspace ((unsigned char)*p))
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p++;
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if (!*p)
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error (0, "Unexpected end of file");
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s = make_string (p); // grab the filename
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while (*p && *p != '\n') // ignore flags
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p++;
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pr_source_line = line - 1;
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s_file = ReuseString (strip_path (s));
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free (s);
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}
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[+\-*/&|^%]= {
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yylval.op = yytext[0];
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return ASX;
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}
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"<<=" {
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yylval.op = SHL;
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return ASX;
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}
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">>=" {
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yylval.op = SHR;
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return ASX;
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}
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[!(){}.*/&|^~+\-=\[\];,#%?:] return yytext[0];
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"..." return ELIPSIS;
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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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yylval.op = '+';
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return INCOP;
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}
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"--" {
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yylval.op = '-';
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return INCOP;
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}
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"$"{s}*{ID} {
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int ret = do_grab(yytext);
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if (ret > 0)
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return ret;
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else
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BEGIN (-ret);
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}
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<grab_frame>{ID} add_frame_macro (yytext);
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<grab_other>[^\r\n]* /* skip */
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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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int version;
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} keyword_t;
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static keyword_t keywords[] = {
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{"void", TYPE, &type_void, 1, PROG_ID_VERSION},
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{"float", TYPE, &type_float, 1, PROG_ID_VERSION},
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{"string", TYPE, &type_string, 1, PROG_ID_VERSION},
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{"vector", TYPE, &type_vector, 1, PROG_ID_VERSION},
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{"entity", TYPE, &type_entity, 1, PROG_ID_VERSION},
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{"quaternion", TYPE, &type_quaternion, 0, PROG_VERSION},
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{"integer", TYPE, &type_integer, 0, PROG_VERSION},
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{"function", TYPE, &type_function, 0, PROG_VERSION},
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{"local", LOCAL, 0, 1, PROG_ID_VERSION},
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{"return", RETURN, 0, 1, PROG_ID_VERSION},
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{"while", WHILE, 0, 1, PROG_ID_VERSION},
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{"do", DO, 0, 1, PROG_ID_VERSION},
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{"if", IF, 0, 1, PROG_ID_VERSION},
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{"else", ELSE, 0, 1, PROG_ID_VERSION},
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{"for", FOR, 0, 0, PROG_ID_VERSION},
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{"break", BREAK, 0, 0, PROG_ID_VERSION},
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{"continue", CONTINUE, 0, 0, PROG_ID_VERSION},
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{"switch", SWITCH, 0, 0, PROG_ID_VERSION},
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{"case", CASE, 0, 0, PROG_ID_VERSION},
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{"default", DEFAULT, 0, 0, PROG_ID_VERSION},
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{"NIL", NIL, 0, 0, PROG_ID_VERSION},
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{"struct", STRUCT, 0, 0, PROG_VERSION},
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{"enum", ENUM, 0, 0, PROG_ID_VERSION},
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{"typedef", TYPEDEF, 0, 0, PROG_ID_VERSION},
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};
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static const char *
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keyword_get_key (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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int
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type_or_name (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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type_t *type;
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if (!keyword_tab) {
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int 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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yylval.type = keyword->type;
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return keyword->value;
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}
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if ((type = find_struct (token)) || (type = get_typedef (token))) {
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yylval.type = type;
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return TYPE;
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}
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yylval.string_val = strdup (token);
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return NAME;
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}
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static hashtab_t *frame_tab;
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static hashtab_t *grab_tab;
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typedef struct {
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const char *name;
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int num;
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} frame_t;
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static frame_t grab_list[] = {
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{"cd", 0},
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{"origin", 0},
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{"base", 0},
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{"flags", 0},
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{"scale", 0},
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{"skin", 0},
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};
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static const char *
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frame_get_key (void *f, void *unused)
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{
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return ((frame_t*)f)->name;
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}
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static void
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frame_free (void *f, void *unused)
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{
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free ((char*)((frame_t*)f)->name);
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free (f);
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}
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int
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do_grab (char *token)
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{
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static int initialized;
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frame_t *frame;
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if (!initialized) {
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int i;
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initialized = 1;
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frame_tab = Hash_NewTable (1021, frame_get_key, frame_free, 0);
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grab_tab = Hash_NewTable (1021, frame_get_key, 0, 0);
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for (i = 0; i < sizeof (grab_list) / sizeof (grab_list[0]); i++)
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Hash_Add (grab_tab, &grab_list[i]);
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}
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while (isspace ((unsigned char)*++token))
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// advance over $ and leading space
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;
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if (!strcmp (token, "frame"))
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return -grab_frame;
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if (Hash_Find (grab_tab, token))
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return -grab_other;
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frame = Hash_Find (frame_tab, token);
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if (frame) {
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yylval.integer_val = frame->num;
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return INT_VAL;
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}
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return 0;
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}
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static int frame_number;
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void
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add_frame_macro (char *token)
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{
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frame_t *frame = malloc (sizeof (frame_t));
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if (!frame)
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Sys_Error ("add_frame_macro: Memory Allocation Failure\n");
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frame->name = strdup (token);
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frame->num = frame_number++;
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Hash_Add (frame_tab, frame);
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}
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void
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clear_frame_macros (void)
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{
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frame_number = 0;
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if (frame_tab)
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Hash_FlushTable (frame_tab);
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}
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char *
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make_string (char *token)
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{
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char *str, *s;
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int c;
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int i;
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int mask;
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int boldnext;
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int quote;
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s = str = malloc (strlen (token) + 1);
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if (!str)
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Sys_Error ("make_string: Memory Allocation Failure\n");
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mask = 0x00;
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boldnext = 0;
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quote = *token++;
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do {
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c = *token++;
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if (!c)
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error (0, "EOF inside quote");
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if (c == '\n')
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error (0, "newline inside quote");
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if (c == '\\') { // escape char
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c = *token++;
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if (!c)
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error (0, "EOF inside quote");
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switch (c) {
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case '\\':
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c = '\\';
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break;
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case 'n':
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c = '\n';
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break;
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case '"':
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c = '\"';
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break;
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case '\'':
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c = '\'';
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break;
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case '0':
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case '1':
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case '2':
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case '3':
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case '4':
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case '5':
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case '6':
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case '7':
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for (i = c = 0; i < 3
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&& *token >= '0'
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&& *token <= '7'; i++, token++) {
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c *= 8;
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c += *token - '0';
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}
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if (!*token)
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error (0, "EOF inside quote");
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break;
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case 'x':
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c = 0;
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while (*token && isxdigit ((unsigned char)*token)) {
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c *= 16;
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if (*token <= '9')
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c += *token - '0';
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else if (*token <= 'F')
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c += *token - 'A' + 10;
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else
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c += *token - 'a' + 10;
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token++;
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}
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if (!*token)
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error (0, "EOF inside quote");
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break;
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case 'a':
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c = '\a';
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break;
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case 'b':
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c = '\b';
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break;
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case 'e':
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c = '\033';
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break;
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case 'f':
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c = '\f';
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break;
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case 'r':
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c = '\r';
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break;
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case 't':
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c = '\t';
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break;
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case 'v':
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c = '\v';
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break;
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case '^':
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if (*token == '\"')
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error (0, "Unexpected end of string after \\^");
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boldnext = 1;
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continue;
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case '<':
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mask = 0x80;
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continue;
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case '>':
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mask = 0x00;
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continue;
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default:
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error (0, "Unknown escape char");
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break;
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}
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} else if (c == quote) {
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*s++ = 0;
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break;;
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}
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if (boldnext)
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c = c ^ 0x80;
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boldnext = 0;
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c = c ^ mask;
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*s++ = c;
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} while (1);
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return str;
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}
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