60 lines
1.1 KiB
Plaintext
60 lines
1.1 KiB
Plaintext
/* inf's Flex grammar */
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%{
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#include "parser.tab.h"
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int yywrap();
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%}
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DIGIT [0-9]
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IDENT_START [a-zA-Z_?*+!/=]|"-"
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IDENT_CONT {IDENT_START}|{DIGIT}
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ESCAPED \\[nt"\\]
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STRING_CHAR {ESCAPED}|[[:print:]]{-}["\\]
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%%
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"true" { return TRUE; }
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"false" { return FALSE; }
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"case" { return CASE; }
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"let" { return LET; }
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"in" { return IN; }
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"match" { return MATCH; }
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"of" { return OF; }
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"def" { return DEF; }
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"datatype" { return DATATYPE; }
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"alias" { return ALIAS; }
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"typecheck" { return TYPECHECK; }
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"->" { return ARROW; }
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"=" { return *yytext; }
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"\\" { return *yytext; }
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"(" { return *yytext; }
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")" { return *yytext; }
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"[" { return *yytext; }
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"]" { return *yytext; }
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"{" { return *yytext; }
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"}" { return *yytext; }
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"," { return *yytext; }
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"|" { return *yytext; }
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":" { return *yytext; }
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"<" { return *yytext; }
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">" { return *yytext; }
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[ \t\n]+ ;
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#[^\n]* ;
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{IDENT_START}{IDENT_CONT}* { return IDENT; }
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'{IDENT_START}{IDENT_CONT}* { return PARAM_IDENT; }
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{DIGIT}+ { return INT; }
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\"{STRING_CHAR}*\" { return STRING; }
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%%
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int yywrap() {
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return 1;
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}
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