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Merge branch 'Dev' into Sprint1-Type/Keywards-FE-t#07

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maxsimongt3
2025-02-11 16:55:01 -05:00
committed by GitHub
parent 5abc36c00c 8ede5fb45f
commit 7066c72c51
5 changed files with 137 additions and 18 deletions
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52
lexicalStructure.lex
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@ -1,14 +1,26 @@
/* Lexical Analysis with Flex (2.6.0) We used some of the code from this manual */
/* 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"
%}
int line_number = 1, column_number = 1;
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 */
%%
\n line_number++ column_number = 1;
. column_number++;
@ -17,8 +29,11 @@
"Boolean" {return T_BOOLEAN}
"character" {return T_CHARACTER}
/* KEYWARDS */
/* rules */
{DIGIT}+ {printf( "C_INTEGER: %s (%d)\n", yytext, atoi( yytext ) );}
"null" {printf( "C_NULL: %s (%d)\n", yytext, atoi( yytext ) );}
"while" {return WHILE}
"if" {return IF}
@ -30,5 +45,34 @@
"external" {return EXTERNAL}
"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 */
"+" {return ADD;}
"-" {return SUB_OR_NEG;}
"*" {return MUL;}
"/" {return DIV;}
"%" {return REM;}
"<" {return LESS_THAN;}
"=" {return EQUAL_TO;}
":=" {return ASSIGN;}
"!" {return NOT;}
"&" {return AND;}
"|" {return OR;}
"." {return DOT;}
"reserve" {return RESERVE;}
"release" {return RELEASE;}
\"{SCHAR}*\" {printf( "C_STRING: %s (%d)\n", yytext, atoi( yytext ) );}
{STARTCOM}{COMMENTCHAR}*{ENDCOM} {printf( "COMMENT: %s (%d)\n", yytext, atoi( yytext ) );}
%%