55 lines
1.6 KiB
Plaintext
55 lines
1.6 KiB
Plaintext
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%{
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#define YYSTYPE double
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#include "cal_tab.h"
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int c;
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extern YYSTYPE yylval;
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double translate(int type);
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void count(void);
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void setLastVar(void);
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int lookup(int *typeOfObject);
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struct lextab *lexswitch(struct lextab *lp);
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#define INTCONST 1
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#define DBLCONST 2
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#define HEXCONST 3
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#define VARIABLE 4
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#define OTHER 5
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%}
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digit = [0-9];
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letter = [a-zA-Z_];
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hex = [a-fA-F0-9];
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/* -- */
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space = [\40];
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/*number = (digit* | "-" digit*);*/
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number = digit*;
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exp = [Ee] number;
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doubl = number "." (digit* | digit* exp);
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%%
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hex hex* [hH] { count(); yylval = translate(HEXCONST); return VALUE; }
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digit* { count(); yylval = translate(INTCONST); return VALUE; }
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digit digit* [Dd] { count(); yylval = translate(INTCONST); return VALUE; }
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doubl { count(); yylval = translate(DBLCONST); return VALUE; }
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letter* { count(); { int typeOfObject; setLastVar(); yylval = lookup(&typeOfObject); return typeOfObject; }}
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letter (letter|digit)* { count(); { int typeOfObject; setLastVar(); yylval = lookup(&typeOfObject); return typeOfObject; }}
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'+' { count(); return '+'; }
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'-' { count(); return '-'; }
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'*' { count(); return '*'; }
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'/' { count(); return '/'; }
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'%' { count(); return '%'; }
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'&' { count(); return '&'; }
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'|' { count(); return '|'; }
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'(' { count(); return '('; }
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')' { count(); return ')'; }
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'=' { count(); return '='; }
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',' { count(); return ','; }
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';' { count(); return ';'; }
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[ \t\v\f] { count(); }
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. { count(); }
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%%
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