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Merge branch 'Dev' into Sprint1-TokenizeOperators-FE-t#08

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Annie Slenker
2025-02-11 16:48:44 -05:00
committed by GitHub
parent a7fa7bb669 f37138e0d4
commit 0fcffc02fa
3 changed files with 77 additions and 26 deletions
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53
lexicalStructure.lex
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@ -1,32 +1,36 @@
/* Lexical Analysis with Flex (1.6.0) We used some of the code from this manual */
/* so we placed the citation here. */
/* definitions */
%option noyywrap
%{
#include "typedefs.h"
%{
#include "typedefs.h"
%}
DIGIT [0-9]
CHAR \\n|\\t|\\'|[^'\n\t\\]
/* char can be a newline, tab, an escaped quote, or anything but a single quote, an actual line break, an actual tab, or a backslash by itself (to prevent confusion from escaped quote */
SCHAR \\n|\\t|\\\"|[^\"\n\\]
/*similar to above, a string Char (SCHAR) is the same as a CHAR except we cannot have double quotes instead of single quotes. Double quotes need to be escaped in Flex unlike single quotes based on documentation */
STARTCOM \(\*
ENDCOM \*\)
COMMENTCHAR [^\*]|\*[^\)]
/*Making the contents of a comment anything that is either not a * or not a * followed by ) to terminate comments at the first ENDCOM */
%%
"integer" {printf("T_INTEGER %s, Token %d\n",yytext, T_INTEGER);} //{return T_INTEGER}
"address" {printf("T_ADDRESS %s, Token %d\n",yytext, T_ADDRESS);} //{return T_ADDRESS}
"Boolean" {printf("T_BOOLEAN %s, Token %d\n",yytext, T_BOOLEAN);} //{return T_BOOLEAN}
"character" {printf("T_CHARACTER %s, Token %d\n",yytext, T_CHARACTER);} //{return T_CHARACTER}
"string" {printf("T_STRING %s, Token %d\n",yytext, T_STRING);} //{return T_STRING}
/* KEYWARDS */
/* rules */
{DIGIT}+ {printf( "C_INTEGER: %s (%d)\n", yytext, atoi( yytext ) );}
"null" {printf( "C_NULL: %s (%d)\n", yytext, atoi( yytext ) );}
"while" {printf("WHILE %s, Token %d\n",yytext, WHILE);} //{return WHILE}
"if" {printf("IF %s, Token %d\n",yytext, IF);} //{return IF}
"then" {printf("THEN %s, Token %d\n",yytext, THEN);} //{return THEN}
"else" {printf("ELSE %s, Token %d\n",yytext, ELSE);} //{return ELSE}
"type" {printf("TYPE %s, Token %d\n",yytext, TYPE);} //{return TYPE}
"function" {printf("FUNCTION %s, Token %d\n",yytext, FUNCTION);} //{return FUNCTION}
"return" {printf("RETURN %s, Token %d\n",yytext, RETURN);} //{return RETURN}
"external" {printf("EXTERNAL %s, Token %d\n",yytext, EXTERNAL);} //{return EXTERNAL}
"as" {printf("AS %s, Token %d\n",yytext, AS);} //{return AS}//
'{CHAR}' {printf( "C_CHARACTER: %s (%d)\n", yytext, atoi( yytext ) );} /*using double \ per documentation to show escaped chars*/
"true" {printf( "C_TRUE: %s (%d)\n", yytext, atoi( yytext ) );}
"false" {printf( "C_FALSE: %s (%d)\n", yytext, atoi( yytext ) );}
/* OPERATORS */
@ -44,14 +48,11 @@
"." {return DOT;}
"reserve" {return RESERVE;}
"release" {return RELEASE;}
%%
int main(int argc, char *argv[]){
argc--, argv++;
if ( argc > 0 )
yyin = fopen( argv[0], "r" );
else
yyin = stdin;
yylex();
}
\"{SCHAR}*\" {printf( "C_STRING: %s (%d)\n", yytext, atoi( yytext ) );}
{STARTCOM}{COMMENTCHAR}*{ENDCOM} {printf( "COMMENT: %s (%d)\n", yytext, atoi( yytext ) );}
%%