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taxicality.l
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taxicality.l
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%{
#include "taxicality_config.hpp"
#include "taxicality.h"
#include "Value.hpp"
//#include "symtab.hpp"
#include "StringFunctions.h"
int yyerror(const char* e_str);
%}
delim [ \t]
ws {delim}+
letter [A-Za-z_]
digit [0-9]
id {letter}({letter}|{digit})*
integer (\$?{digit}+)|(\$?{digit}{digit}?{digit}?(\,{digit}{digit}{digit})+)
fpoint {integer}+\.{integer}+
%%
%{
static int last_herald = 0;
if(inject_herald)
{
last_herald = inject_herald;
inject_herald = 0;
return last_herald;
}
%}
{ws} { /*no code needed*/ }
\n { current_line++; }
; {
if(last_herald==INTERACTIVE_HERALD)
return EOF;
else
REJECT;
}
if { return IF; }
elif { return ELIF; }
else { return ELSE; }
true { yylval.value = Value(true);
return LITERAL;
}
false { yylval.value = Value(false);
return LITERAL;
}
assert { return ASSERT; }
ZEROES { return ZEROES; }
RANGE { return RANGE; }
DELTA { return DELTA; }
TOLERANCE { return TOLERANCE; }
of { return OF; }
pattern { return PATTERN; }
BOOLEAN { return BOOLEAN; }
NUMBER { return NUMBER; }
{integer}|{fpoint} { string to_convert = StringFunctions::replace(yytext,"$","");
to_convert = StringFunctions::replace(to_convert,",","");
yylval.value = Value(Number(to_convert));
return LITERAL;
}
/*Assignment*/
:= { return UNINITDEC; }
= { return '='; }
~ { return '~'; }
\<- { return INITIALIZE; }
\<~ { return APPROX_INITIALIZE; }
/*Computation*/
\\ { return '\\'; }
\\_ { return TRUNCATE; }
\\^ { return ROUNDUP; }
\+ { return '+'; }
- { return '-'; }
\* { return '*'; }
\/ { return '/'; }
/*Comparison*/
\< { return '<'; }
\<= { return LT_EQUALS; }
== { return EQUALS; }
\>= { return GT_EQUALS; }
\> { return '>'; }
!= { return NOT_EQUALS; }
/*Logic*/
and { return AND; }
or { return OR; }
not { return NOT; }
/*Punctuation*/
\. { return '.'; }
\, { return ','; }
: { return ':'; }
\[ { return '['; }
\] { return ']'; }
\| { return '|'; }
\( { return '('; }
\) { return ')'; }
\{ { return '{'; }
\} { return '}'; }
{id} { yylval.identifier = new string{yytext};
return IDENTIFIER;
}
@.*@ { string temp = yytext;
temp = temp.substr(1,temp.size()-2);
yylval.identifier = new string{temp};
return REGEX;
}
\" { char c = yyinput();
while(c!='\"')
if(c=='\n' || c=='\0')
{
yyerror("Lexer: unterminated comment literal.");
break;
}
else
c = yyinput();
}
. { yyerror((string{"Illegal character: "}+yytext).c_str()); }
<<EOF>> {
if(last_herald==INTERACTIVE_HERALD)
exit(0);
else
return EOF;
}