mirror of
https://github.com/lua/lua
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LUA lexis description
This commit is contained in:
Waldemar Celes
parent
93683d530d
commit
eca0111886
923
lex_yy.c
923
lex_yy.c
@ -1,923 +0,0 @@
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# include "stdio.h"
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# define U(x) x
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# define NLSTATE yyprevious=YYNEWLINE
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# define BEGIN yybgin = yysvec + 1 +
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# define INITIAL 0
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# define YYLERR yysvec
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# define YYSTATE (yyestate-yysvec-1)
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# define YYOPTIM 1
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# define YYLMAX BUFSIZ
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# define output(c) putc(c,yyout)
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# define input() (((yytchar=yysptr>yysbuf?U(*--yysptr):getc(yyin))==10?(yylineno++,yytchar):yytchar)==EOF?0:yytchar)
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# define unput(c) {yytchar= (c);if(yytchar=='\n')yylineno--;*yysptr++=yytchar;}
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# define yymore() (yymorfg=1)
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# define ECHO fprintf(yyout, "%s",yytext)
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# define REJECT { nstr = yyreject(); goto yyfussy;}
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int yyleng; extern char yytext[];
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int yymorfg;
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extern char *yysptr, yysbuf[];
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int yytchar;
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FILE *yyin = {stdin}, *yyout = {stdout};
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extern int yylineno;
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struct yysvf {
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struct yywork *yystoff;
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struct yysvf *yyother;
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int *yystops;};
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struct yysvf *yyestate;
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extern struct yysvf yysvec[], *yybgin;
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#include <stdlib.h>
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#include <string.h>
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#include "opcode.h"
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#include "hash.h"
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#include "inout.h"
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#include "table.h"
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#include "y_tab.h"
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#undef input
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#undef unput
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static Input input;
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static Unput unput;
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void lua_setinput (Input fn)
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{
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input = fn;
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}
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void lua_setunput (Unput fn)
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{
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unput = fn;
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}
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char *lua_lasttext (void)
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{
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return yytext;
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}
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# define YYNEWLINE 10
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yylex(){
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int nstr; extern int yyprevious;
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while((nstr = yylook()) >= 0)
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yyfussy: switch(nstr){
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case 0:
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if(yywrap()) return(0); break;
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case 1:
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;
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break;
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case 2:
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{yylval.vInt = 1; return DEBUG;}
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break;
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case 3:
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{yylval.vInt = 0; return DEBUG;}
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break;
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case 4:
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lua_linenumber++;
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break;
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case 5:
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;
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break;
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case 6:
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return LOCAL;
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break;
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case 7:
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return IF;
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break;
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case 8:
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return THEN;
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break;
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case 9:
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return ELSE;
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break;
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case 10:
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return ELSEIF;
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break;
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case 11:
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return WHILE;
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break;
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case 12:
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return DO;
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break;
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case 13:
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return REPEAT;
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break;
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case 14:
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return UNTIL;
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break;
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case 15:
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{
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yylval.vWord = lua_nfile-1;
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return FUNCTION;
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}
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break;
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case 16:
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return END;
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break;
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case 17:
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return RETURN;
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break;
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case 18:
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return LOCAL;
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break;
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case 19:
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return NIL;
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break;
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case 20:
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return AND;
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break;
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case 21:
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return OR;
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break;
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case 22:
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return NOT;
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break;
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case 23:
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return NE;
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break;
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case 24:
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return LE;
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break;
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case 25:
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return GE;
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break;
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case 26:
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return CONC;
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break;
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case 27:
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case 28:
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{
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yylval.vWord = lua_findenclosedconstant (yytext);
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return STRING;
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}
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break;
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case 29:
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case 30:
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case 31:
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case 32:
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{
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yylval.vFloat = atof(yytext);
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return NUMBER;
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}
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break;
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case 33:
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{
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yylval.vWord = lua_findsymbol (yytext);
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return NAME;
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}
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break;
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case 34:
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return *yytext;
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break;
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case -1:
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break;
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default:
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fprintf(yyout,"bad switch yylook %d",nstr);
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} return(0); }
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/* end of yylex */
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int yyvstop[] = {
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0,
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1,
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0,
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1,
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0,
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34,
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0,
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1,
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34,
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0,
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4,
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0,
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34,
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0,
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34,
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0,
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34,
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0,
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34,
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0,
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29,
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34,
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0,
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34,
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0,
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34,
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0,
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33,
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34,
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0,
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33,
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34,
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0,
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33,
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34,
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0,
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33,
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34,
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0,
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33,
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34,
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0,
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33,
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34,
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0,
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33,
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34,
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0,
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33,
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34,
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0,
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33,
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34,
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0,
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33,
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34,
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0,
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33,
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34,
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0,
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33,
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34,
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0,
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33,
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34,
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0,
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34,
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0,
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34,
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0,
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1,
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0,
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27,
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0,
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28,
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0,
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5,
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0,
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26,
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0,
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30,
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0,
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29,
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0,
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29,
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0,
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24,
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0,
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25,
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0,
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33,
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0,
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33,
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0,
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12,
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33,
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0,
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33,
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0,
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33,
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0,
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33,
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0,
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7,
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33,
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0,
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33,
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0,
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33,
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0,
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33,
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0,
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21,
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33,
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0,
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33,
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0,
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33,
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0,
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33,
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0,
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33,
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0,
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23,
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0,
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29,
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30,
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0,
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31,
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0,
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20,
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33,
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0,
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33,
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0,
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16,
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33,
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0,
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33,
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0,
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33,
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0,
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19,
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33,
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0,
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22,
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33,
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0,
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33,
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0,
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33,
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0,
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33,
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0,
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||||
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33,
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0,
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||||
|
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33,
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0,
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||||
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32,
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0,
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9,
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33,
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0,
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33,
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0,
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||||
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33,
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0,
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||||
|
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33,
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0,
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33,
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0,
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8,
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33,
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0,
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||||
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33,
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0,
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||||
|
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33,
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0,
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||||
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31,
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32,
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0,
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||||
|
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33,
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||||
0,
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||||
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||||
33,
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||||
0,
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6,
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18,
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33,
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0,
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33,
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0,
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||||
|
||||
33,
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||||
0,
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||||
|
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14,
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||||
33,
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||||
0,
|
||||
|
||||
11,
|
||||
33,
|
||||
0,
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||||
|
||||
10,
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||||
33,
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||||
0,
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||||
|
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33,
|
||||
0,
|
||||
|
||||
13,
|
||||
33,
|
||||
0,
|
||||
|
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17,
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||||
33,
|
||||
0,
|
||||
|
||||
2,
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||||
0,
|
||||
|
||||
33,
|
||||
0,
|
||||
|
||||
15,
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33,
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0,
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|
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3,
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0,
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0};
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# define YYTYPE char
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struct yywork { YYTYPE verify, advance; } yycrank[] = {
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0,0, 0,0, 1,3, 0,0,
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0,0, 0,0, 0,0, 0,0,
|
||||
0,0, 0,0, 1,4, 1,5,
|
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6,29, 4,28, 0,0, 0,0,
|
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0,0, 0,0, 7,31, 0,0,
|
||||
6,29, 6,29, 0,0, 0,0,
|
||||
0,0, 0,0, 7,31, 7,31,
|
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0,0, 0,0, 0,0, 0,0,
|
||||
0,0, 0,0, 0,0, 1,6,
|
||||
4,28, 0,0, 0,0, 0,0,
|
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1,7, 0,0, 0,0, 0,0,
|
||||
1,3, 6,30, 1,8, 1,9,
|
||||
0,0, 1,10, 6,29, 7,31,
|
||||
8,33, 0,0, 6,29, 0,0,
|
||||
7,32, 0,0, 0,0, 6,29,
|
||||
7,31, 1,11, 0,0, 1,12,
|
||||
2,27, 7,31, 1,13, 11,39,
|
||||
12,40, 1,13, 26,56, 0,0,
|
||||
0,0, 2,8, 2,9, 0,0,
|
||||
6,29, 0,0, 0,0, 6,29,
|
||||
0,0, 0,0, 7,31, 0,0,
|
||||
0,0, 7,31, 0,0, 0,0,
|
||||
2,11, 0,0, 2,12, 0,0,
|
||||
0,0, 0,0, 0,0, 0,0,
|
||||
0,0, 0,0, 1,14, 0,0,
|
||||
0,0, 1,15, 1,16, 1,17,
|
||||
0,0, 22,52, 1,18, 18,47,
|
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23,53, 1,19, 42,63, 1,20,
|
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1,21, 25,55, 14,42, 1,22,
|
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15,43, 1,23, 1,24, 16,44,
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1,25, 16,45, 17,46, 19,48,
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21,51, 2,14, 20,49, 1,26,
|
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2,15, 2,16, 2,17, 24,54,
|
||||
20,50, 2,18, 44,64, 45,65,
|
||||
2,19, 46,66, 2,20, 2,21,
|
||||
27,57, 48,67, 2,22, 49,68,
|
||||
2,23, 2,24, 50,69, 2,25,
|
||||
52,70, 53,72, 27,58, 54,73,
|
||||
52,71, 9,34, 2,26, 9,35,
|
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9,35, 9,35, 9,35, 9,35,
|
||||
9,35, 9,35, 9,35, 9,35,
|
||||
9,35, 10,36, 55,74, 10,37,
|
||||
10,37, 10,37, 10,37, 10,37,
|
||||
10,37, 10,37, 10,37, 10,37,
|
||||
10,37, 57,75, 58,76, 64,80,
|
||||
66,81, 67,82, 70,83, 71,84,
|
||||
72,85, 73,86, 74,87, 10,38,
|
||||
10,38, 38,61, 10,38, 38,61,
|
||||
75,88, 76,89, 38,62, 38,62,
|
||||
38,62, 38,62, 38,62, 38,62,
|
||||
38,62, 38,62, 38,62, 38,62,
|
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80,92, 81,93, 13,41, 13,41,
|
||||
13,41, 13,41, 13,41, 13,41,
|
||||
13,41, 13,41, 13,41, 13,41,
|
||||
82,94, 83,95, 84,96, 10,38,
|
||||
10,38, 86,97, 10,38, 13,41,
|
||||
13,41, 13,41, 13,41, 13,41,
|
||||
13,41, 13,41, 13,41, 13,41,
|
||||
13,41, 13,41, 13,41, 13,41,
|
||||
13,41, 13,41, 13,41, 13,41,
|
||||
13,41, 13,41, 13,41, 13,41,
|
||||
13,41, 13,41, 13,41, 13,41,
|
||||
13,41, 87,98, 88,99, 60,79,
|
||||
60,79, 13,41, 60,79, 13,41,
|
||||
13,41, 13,41, 13,41, 13,41,
|
||||
13,41, 13,41, 13,41, 13,41,
|
||||
13,41, 13,41, 13,41, 13,41,
|
||||
13,41, 13,41, 13,41, 13,41,
|
||||
13,41, 13,41, 13,41, 13,41,
|
||||
13,41, 13,41, 13,41, 13,41,
|
||||
13,41, 33,33, 89,100, 60,79,
|
||||
60,79, 92,101, 60,79, 93,102,
|
||||
95,103, 33,33, 33,0, 96,104,
|
||||
99,105, 100,106, 102,107, 106,108,
|
||||
107,109, 35,35, 35,35, 35,35,
|
||||
35,35, 35,35, 35,35, 35,35,
|
||||
35,35, 35,35, 35,35, 108,110,
|
||||
0,0, 0,0, 0,0, 0,0,
|
||||
0,0, 0,0, 33,33, 0,0,
|
||||
0,0, 35,59, 35,59, 33,33,
|
||||
35,59, 0,0, 0,0, 33,33,
|
||||
0,0, 0,0, 0,0, 0,0,
|
||||
33,33, 0,0, 0,0, 0,0,
|
||||
0,0, 36,60, 36,60, 36,60,
|
||||
36,60, 36,60, 36,60, 36,60,
|
||||
36,60, 36,60, 36,60, 0,0,
|
||||
0,0, 33,33, 0,0, 0,0,
|
||||
33,33, 35,59, 35,59, 0,0,
|
||||
35,59, 36,38, 36,38, 59,77,
|
||||
36,38, 59,77, 0,0, 0,0,
|
||||
59,78, 59,78, 59,78, 59,78,
|
||||
59,78, 59,78, 59,78, 59,78,
|
||||
59,78, 59,78, 61,62, 61,62,
|
||||
61,62, 61,62, 61,62, 61,62,
|
||||
61,62, 61,62, 61,62, 61,62,
|
||||
0,0, 0,0, 0,0, 0,0,
|
||||
0,0, 36,38, 36,38, 0,0,
|
||||
36,38, 77,78, 77,78, 77,78,
|
||||
77,78, 77,78, 77,78, 77,78,
|
||||
77,78, 77,78, 77,78, 79,90,
|
||||
0,0, 79,90, 0,0, 0,0,
|
||||
79,91, 79,91, 79,91, 79,91,
|
||||
79,91, 79,91, 79,91, 79,91,
|
||||
79,91, 79,91, 90,91, 90,91,
|
||||
90,91, 90,91, 90,91, 90,91,
|
||||
90,91, 90,91, 90,91, 90,91,
|
||||
0,0};
|
||||
struct yysvf yysvec[] = {
|
||||
0, 0, 0,
|
||||
yycrank+-1, 0, yyvstop+1,
|
||||
yycrank+-28, yysvec+1, yyvstop+3,
|
||||
yycrank+0, 0, yyvstop+5,
|
||||
yycrank+4, 0, yyvstop+7,
|
||||
yycrank+0, 0, yyvstop+10,
|
||||
yycrank+-11, 0, yyvstop+12,
|
||||
yycrank+-17, 0, yyvstop+14,
|
||||
yycrank+7, 0, yyvstop+16,
|
||||
yycrank+107, 0, yyvstop+18,
|
||||
yycrank+119, 0, yyvstop+20,
|
||||
yycrank+6, 0, yyvstop+23,
|
||||
yycrank+7, 0, yyvstop+25,
|
||||
yycrank+158, 0, yyvstop+27,
|
||||
yycrank+4, yysvec+13, yyvstop+30,
|
||||
yycrank+5, yysvec+13, yyvstop+33,
|
||||
yycrank+11, yysvec+13, yyvstop+36,
|
||||
yycrank+5, yysvec+13, yyvstop+39,
|
||||
yycrank+5, yysvec+13, yyvstop+42,
|
||||
yycrank+12, yysvec+13, yyvstop+45,
|
||||
yycrank+21, yysvec+13, yyvstop+48,
|
||||
yycrank+10, yysvec+13, yyvstop+51,
|
||||
yycrank+4, yysvec+13, yyvstop+54,
|
||||
yycrank+4, yysvec+13, yyvstop+57,
|
||||
yycrank+21, yysvec+13, yyvstop+60,
|
||||
yycrank+9, yysvec+13, yyvstop+63,
|
||||
yycrank+9, 0, yyvstop+66,
|
||||
yycrank+40, 0, yyvstop+68,
|
||||
yycrank+0, yysvec+4, yyvstop+70,
|
||||
yycrank+0, yysvec+6, 0,
|
||||
yycrank+0, 0, yyvstop+72,
|
||||
yycrank+0, yysvec+7, 0,
|
||||
yycrank+0, 0, yyvstop+74,
|
||||
yycrank+-280, 0, yyvstop+76,
|
||||
yycrank+0, 0, yyvstop+78,
|
||||
yycrank+249, 0, yyvstop+80,
|
||||
yycrank+285, 0, yyvstop+82,
|
||||
yycrank+0, yysvec+10, yyvstop+84,
|
||||
yycrank+146, 0, 0,
|
||||
yycrank+0, 0, yyvstop+86,
|
||||
yycrank+0, 0, yyvstop+88,
|
||||
yycrank+0, yysvec+13, yyvstop+90,
|
||||
yycrank+10, yysvec+13, yyvstop+92,
|
||||
yycrank+0, yysvec+13, yyvstop+94,
|
||||
yycrank+19, yysvec+13, yyvstop+97,
|
||||
yycrank+35, yysvec+13, yyvstop+99,
|
||||
yycrank+27, yysvec+13, yyvstop+101,
|
||||
yycrank+0, yysvec+13, yyvstop+103,
|
||||
yycrank+42, yysvec+13, yyvstop+106,
|
||||
yycrank+35, yysvec+13, yyvstop+108,
|
||||
yycrank+30, yysvec+13, yyvstop+110,
|
||||
yycrank+0, yysvec+13, yyvstop+112,
|
||||
yycrank+36, yysvec+13, yyvstop+115,
|
||||
yycrank+48, yysvec+13, yyvstop+117,
|
||||
yycrank+35, yysvec+13, yyvstop+119,
|
||||
yycrank+61, yysvec+13, yyvstop+121,
|
||||
yycrank+0, 0, yyvstop+123,
|
||||
yycrank+76, 0, 0,
|
||||
yycrank+67, 0, 0,
|
||||
yycrank+312, 0, 0,
|
||||
yycrank+183, yysvec+36, yyvstop+125,
|
||||
yycrank+322, 0, 0,
|
||||
yycrank+0, yysvec+61, yyvstop+128,
|
||||
yycrank+0, yysvec+13, yyvstop+130,
|
||||
yycrank+78, yysvec+13, yyvstop+133,
|
||||
yycrank+0, yysvec+13, yyvstop+135,
|
||||
yycrank+81, yysvec+13, yyvstop+138,
|
||||
yycrank+84, yysvec+13, yyvstop+140,
|
||||
yycrank+0, yysvec+13, yyvstop+142,
|
||||
yycrank+0, yysvec+13, yyvstop+145,
|
||||
yycrank+81, yysvec+13, yyvstop+148,
|
||||
yycrank+66, yysvec+13, yyvstop+150,
|
||||
yycrank+74, yysvec+13, yyvstop+152,
|
||||
yycrank+80, yysvec+13, yyvstop+154,
|
||||
yycrank+78, yysvec+13, yyvstop+156,
|
||||
yycrank+94, 0, 0,
|
||||
yycrank+93, 0, 0,
|
||||
yycrank+341, 0, 0,
|
||||
yycrank+0, yysvec+77, yyvstop+158,
|
||||
yycrank+356, 0, 0,
|
||||
yycrank+99, yysvec+13, yyvstop+160,
|
||||
yycrank+89, yysvec+13, yyvstop+163,
|
||||
yycrank+108, yysvec+13, yyvstop+165,
|
||||
yycrank+120, yysvec+13, yyvstop+167,
|
||||
yycrank+104, yysvec+13, yyvstop+169,
|
||||
yycrank+0, yysvec+13, yyvstop+171,
|
||||
yycrank+113, yysvec+13, yyvstop+174,
|
||||
yycrank+148, yysvec+13, yyvstop+176,
|
||||
yycrank+133, 0, 0,
|
||||
yycrank+181, 0, 0,
|
||||
yycrank+366, 0, 0,
|
||||
yycrank+0, yysvec+90, yyvstop+178,
|
||||
yycrank+183, yysvec+13, yyvstop+181,
|
||||
yycrank+182, yysvec+13, yyvstop+183,
|
||||
yycrank+0, yysvec+13, yyvstop+185,
|
||||
yycrank+172, yysvec+13, yyvstop+189,
|
||||
yycrank+181, yysvec+13, yyvstop+191,
|
||||
yycrank+0, yysvec+13, yyvstop+193,
|
||||
yycrank+0, yysvec+13, yyvstop+196,
|
||||
yycrank+189, 0, 0,
|
||||
yycrank+195, 0, 0,
|
||||
yycrank+0, yysvec+13, yyvstop+199,
|
||||
yycrank+183, yysvec+13, yyvstop+202,
|
||||
yycrank+0, yysvec+13, yyvstop+204,
|
||||
yycrank+0, yysvec+13, yyvstop+207,
|
||||
yycrank+0, 0, yyvstop+210,
|
||||
yycrank+178, 0, 0,
|
||||
yycrank+186, yysvec+13, yyvstop+212,
|
||||
yycrank+204, 0, 0,
|
||||
yycrank+0, yysvec+13, yyvstop+214,
|
||||
yycrank+0, 0, yyvstop+217,
|
||||
0, 0, 0};
|
||||
struct yywork *yytop = yycrank+423;
|
||||
struct yysvf *yybgin = yysvec+1;
|
||||
char yymatch[] = {
|
||||
00 ,01 ,01 ,01 ,01 ,01 ,01 ,01 ,
|
||||
01 ,011 ,012 ,01 ,01 ,01 ,01 ,01 ,
|
||||
01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 ,
|
||||
01 ,01 ,01 ,01 ,01 ,01 ,01 ,01 ,
|
||||
011 ,01 ,'"' ,01 ,01 ,01 ,01 ,047 ,
|
||||
01 ,01 ,01 ,'+' ,01 ,'+' ,01 ,01 ,
|
||||
'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,'0' ,
|
||||
'0' ,'0' ,01 ,01 ,01 ,01 ,01 ,01 ,
|
||||
01 ,'A' ,'A' ,'A' ,'D' ,'D' ,'A' ,'D' ,
|
||||
'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
|
||||
'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
|
||||
'A' ,'A' ,'A' ,01 ,01 ,01 ,01 ,'A' ,
|
||||
01 ,'A' ,'A' ,'A' ,'D' ,'D' ,'A' ,'D' ,
|
||||
'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
|
||||
'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,'A' ,
|
||||
'A' ,'A' ,'A' ,01 ,01 ,01 ,01 ,01 ,
|
||||
0};
|
||||
char yyextra[] = {
|
||||
0,0,0,0,0,0,0,0,
|
||||
0,0,0,0,0,0,0,0,
|
||||
0,0,0,0,0,0,0,0,
|
||||
0,0,0,0,0,0,0,0,
|
||||
0,0,0,0,0,0,0,0,
|
||||
0};
|
||||
#ifndef lint
|
||||
static char ncform_sccsid[] = "@(#)ncform 1.6 88/02/08 SMI"; /* from S5R2 1.2 */
|
||||
#endif
|
||||
|
||||
int yylineno =1;
|
||||
# define YYU(x) x
|
||||
# define NLSTATE yyprevious=YYNEWLINE
|
||||
char yytext[YYLMAX];
|
||||
struct yysvf *yylstate [YYLMAX], **yylsp, **yyolsp;
|
||||
char yysbuf[YYLMAX];
|
||||
char *yysptr = yysbuf;
|
||||
int *yyfnd;
|
||||
extern struct yysvf *yyestate;
|
||||
int yyprevious = YYNEWLINE;
|
||||
yylook(){
|
||||
register struct yysvf *yystate, **lsp;
|
||||
register struct yywork *yyt;
|
||||
struct yysvf *yyz;
|
||||
int yych, yyfirst;
|
||||
struct yywork *yyr;
|
||||
# ifdef LEXDEBUG
|
||||
int debug;
|
||||
# endif
|
||||
char *yylastch;
|
||||
/* start off machines */
|
||||
# ifdef LEXDEBUG
|
||||
debug = 0;
|
||||
# endif
|
||||
yyfirst=1;
|
||||
if (!yymorfg)
|
||||
yylastch = yytext;
|
||||
else {
|
||||
yymorfg=0;
|
||||
yylastch = yytext+yyleng;
|
||||
}
|
||||
for(;;){
|
||||
lsp = yylstate;
|
||||
yyestate = yystate = yybgin;
|
||||
if (yyprevious==YYNEWLINE) yystate++;
|
||||
for (;;){
|
||||
# ifdef LEXDEBUG
|
||||
if(debug)fprintf(yyout,"state %d\n",yystate-yysvec-1);
|
||||
# endif
|
||||
yyt = yystate->yystoff;
|
||||
if(yyt == yycrank && !yyfirst){ /* may not be any transitions */
|
||||
yyz = yystate->yyother;
|
||||
if(yyz == 0)break;
|
||||
if(yyz->yystoff == yycrank)break;
|
||||
}
|
||||
*yylastch++ = yych = input();
|
||||
yyfirst=0;
|
||||
tryagain:
|
||||
# ifdef LEXDEBUG
|
||||
if(debug){
|
||||
fprintf(yyout,"char ");
|
||||
allprint(yych);
|
||||
putchar('\n');
|
||||
}
|
||||
# endif
|
||||
yyr = yyt;
|
||||
if ( (int)yyt > (int)yycrank){
|
||||
yyt = yyr + yych;
|
||||
if (yyt <= yytop && yyt->verify+yysvec == yystate){
|
||||
if(yyt->advance+yysvec == YYLERR) /* error transitions */
|
||||
{unput(*--yylastch);break;}
|
||||
*lsp++ = yystate = yyt->advance+yysvec;
|
||||
goto contin;
|
||||
}
|
||||
}
|
||||
# ifdef YYOPTIM
|
||||
else if((int)yyt < (int)yycrank) { /* r < yycrank */
|
||||
yyt = yyr = yycrank+(yycrank-yyt);
|
||||
# ifdef LEXDEBUG
|
||||
if(debug)fprintf(yyout,"compressed state\n");
|
||||
# endif
|
||||
yyt = yyt + yych;
|
||||
if(yyt <= yytop && yyt->verify+yysvec == yystate){
|
||||
if(yyt->advance+yysvec == YYLERR) /* error transitions */
|
||||
{unput(*--yylastch);break;}
|
||||
*lsp++ = yystate = yyt->advance+yysvec;
|
||||
goto contin;
|
||||
}
|
||||
yyt = yyr + YYU(yymatch[yych]);
|
||||
# ifdef LEXDEBUG
|
||||
if(debug){
|
||||
fprintf(yyout,"try fall back character ");
|
||||
allprint(YYU(yymatch[yych]));
|
||||
putchar('\n');
|
||||
}
|
||||
# endif
|
||||
if(yyt <= yytop && yyt->verify+yysvec == yystate){
|
||||
if(yyt->advance+yysvec == YYLERR) /* error transition */
|
||||
{unput(*--yylastch);break;}
|
||||
*lsp++ = yystate = yyt->advance+yysvec;
|
||||
goto contin;
|
||||
}
|
||||
}
|
||||
if ((yystate = yystate->yyother) && (yyt= yystate->yystoff) != yycrank){
|
||||
# ifdef LEXDEBUG
|
||||
if(debug)fprintf(yyout,"fall back to state %d\n",yystate-yysvec-1);
|
||||
# endif
|
||||
goto tryagain;
|
||||
}
|
||||
# endif
|
||||
else
|
||||
{unput(*--yylastch);break;}
|
||||
contin:
|
||||
# ifdef LEXDEBUG
|
||||
if(debug){
|
||||
fprintf(yyout,"state %d char ",yystate-yysvec-1);
|
||||
allprint(yych);
|
||||
putchar('\n');
|
||||
}
|
||||
# endif
|
||||
;
|
||||
}
|
||||
# ifdef LEXDEBUG
|
||||
if(debug){
|
||||
fprintf(yyout,"stopped at %d with ",*(lsp-1)-yysvec-1);
|
||||
allprint(yych);
|
||||
putchar('\n');
|
||||
}
|
||||
# endif
|
||||
while (lsp-- > yylstate){
|
||||
*yylastch-- = 0;
|
||||
if (*lsp != 0 && (yyfnd= (*lsp)->yystops) && *yyfnd > 0){
|
||||
yyolsp = lsp;
|
||||
if(yyextra[*yyfnd]){ /* must backup */
|
||||
while(yyback((*lsp)->yystops,-*yyfnd) != 1 && lsp > yylstate){
|
||||
lsp--;
|
||||
unput(*yylastch--);
|
||||
}
|
||||
}
|
||||
yyprevious = YYU(*yylastch);
|
||||
yylsp = lsp;
|
||||
yyleng = yylastch-yytext+1;
|
||||
yytext[yyleng] = 0;
|
||||
# ifdef LEXDEBUG
|
||||
if(debug){
|
||||
fprintf(yyout,"\nmatch ");
|
||||
sprint(yytext);
|
||||
fprintf(yyout," action %d\n",*yyfnd);
|
||||
}
|
||||
# endif
|
||||
return(*yyfnd++);
|
||||
}
|
||||
unput(*yylastch);
|
||||
}
|
||||
if (yytext[0] == 0 /* && feof(yyin) */)
|
||||
{
|
||||
yysptr=yysbuf;
|
||||
return(0);
|
||||
}
|
||||
yyprevious = yytext[0] = input();
|
||||
if (yyprevious>0)
|
||||
output(yyprevious);
|
||||
yylastch=yytext;
|
||||
# ifdef LEXDEBUG
|
||||
if(debug)putchar('\n');
|
||||
# endif
|
||||
}
|
||||
}
|
||||
yyback(p, m)
|
||||
int *p;
|
||||
{
|
||||
if (p==0) return(0);
|
||||
while (*p)
|
||||
{
|
||||
if (*p++ == m)
|
||||
return(1);
|
||||
}
|
||||
return(0);
|
||||
}
|
||||
/* the following are only used in the lex library */
|
||||
yyinput(){
|
||||
return(input());
|
||||
}
|
||||
yyoutput(c)
|
||||
int c; {
|
||||
output(c);
|
||||
}
|
||||
yyunput(c)
|
||||
int c; {
|
||||
unput(c);
|
||||
}
|
||||
85
lua.lex
Normal file
85
lua.lex
Normal file
@ -0,0 +1,85 @@
|
||||
%{
|
||||
|
||||
char *rcs_lualex = "$Id: $";
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
#include "opcode.h"
|
||||
#include "hash.h"
|
||||
#include "inout.h"
|
||||
#include "table.h"
|
||||
#include "y.tab.h"
|
||||
|
||||
#undef input
|
||||
#undef unput
|
||||
|
||||
static Input input;
|
||||
static Unput unput;
|
||||
|
||||
void lua_setinput (Input fn)
|
||||
{
|
||||
input = fn;
|
||||
}
|
||||
|
||||
void lua_setunput (Unput fn)
|
||||
{
|
||||
unput = fn;
|
||||
}
|
||||
|
||||
char *lua_lasttext (void)
|
||||
{
|
||||
return yytext;
|
||||
}
|
||||
|
||||
%}
|
||||
|
||||
|
||||
%%
|
||||
[ \t]* ;
|
||||
^"$debug" {yylval.vInt = 1; return DEBUG;}
|
||||
^"$nodebug" {yylval.vInt = 0; return DEBUG;}
|
||||
\n lua_linenumber++;
|
||||
"--".* ;
|
||||
"local" return LOCAL;
|
||||
"if" return IF;
|
||||
"then" return THEN;
|
||||
"else" return ELSE;
|
||||
"elseif" return ELSEIF;
|
||||
"while" return WHILE;
|
||||
"do" return DO;
|
||||
"repeat" return REPEAT;
|
||||
"until" return UNTIL;
|
||||
"function" {
|
||||
yylval.vWord = lua_nfile-1;
|
||||
return FUNCTION;
|
||||
}
|
||||
"end" return END;
|
||||
"return" return RETURN;
|
||||
"local" return LOCAL;
|
||||
"nil" return NIL;
|
||||
"and" return AND;
|
||||
"or" return OR;
|
||||
"not" return NOT;
|
||||
"~=" return NE;
|
||||
"<=" return LE;
|
||||
">=" return GE;
|
||||
".." return CONC;
|
||||
\"[^\"]*\" |
|
||||
\'[^\']*\' {
|
||||
yylval.vWord = lua_findenclosedconstant (yytext);
|
||||
return STRING;
|
||||
}
|
||||
[0-9]+("."[0-9]*)? |
|
||||
([0-9]+)?"."[0-9]+ |
|
||||
[0-9]+("."[0-9]*)?[dDeEgG][+-]?[0-9]+ |
|
||||
([0-9]+)?"."[0-9]+[dDeEgG][+-]?[0-9]+ {
|
||||
yylval.vFloat = atof(yytext);
|
||||
return NUMBER;
|
||||
}
|
||||
[a-zA-Z_][a-zA-Z0-9_]* {
|
||||
yylval.vWord = lua_findsymbol (yytext);
|
||||
return NAME;
|
||||
}
|
||||
. return *yytext;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user