73 lines
1.4 KiB
Plaintext
73 lines
1.4 KiB
Plaintext
%{
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#include "location.h"
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#include "formula_tab.hh"
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extern YYLTYPE fmla_lloc;
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#define YY_USER_ACTION SET_LLOC(fmla_);
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%}
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%option nounput
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%option noyy_top_state
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%option stack
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%option yylineno
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%option prefix="fmla_"
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%option never-interactive
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%x CMT
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%%
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/* comments */
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<*>"/*" {yy_push_state(CMT);}
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<CMT>[^*\n]*
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<CMT>"*"+[^*/\n]*
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<CMT>"*"+"/" {yy_pop_state();}
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<CMT>[\n]
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"//".*\n
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/* initial spaces or tabs are ignored */
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[ \t\r\n]
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[+] {return YPLUS;}
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[-] {return YMINUS;}
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[*] {return YTIMES;}
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[/] {return YDIVIDE;}
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[\^] {return YPOWER;}
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exp {return YEXP;}
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log {return YLOG;}
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sin {return YSIN;}
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cos {return YCOS;}
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tan {return YTAN;}
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sqrt {return YSQRT;}
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erf {return YERF;}
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erfc {return YERFC;}
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diff {return YDIFF;}
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/* names: parameters, variables (lagged/leaded) */
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[A-Za-z_][A-Za-z0-9_]*([\(\{][+-]?[0-9]+[\)\}])? {
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fmla_lval.string=fmla_text;
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return NAME;
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}
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/* floating point numbers */
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(([0-9]*\.?[0-9]+)|([0-9]+\.))([edED][-+]?[0-9]+)? {
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fmla_lval.string=fmla_text;
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return DNUMBER;
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}
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= {return EQUAL_SIGN;}
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. {return fmla_text[0];}
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%%
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int fmla_wrap()
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{
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return 1;
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}
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void fmla__destroy_buffer(void* p)
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{
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fmla__delete_buffer((YY_BUFFER_STATE)p);
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}
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