[CI/PA1] Initial testing structure for lexer

1 files changed, 31 insertions, 24 deletions

diff --git a/Year 3/Compilers, Introduction/coolc-spim/my-code/coursework/pa1/cool.flex b/Year 3/Compilers, Introduction/coolc-spim/my-code/coursework/pa1/cool.flex
index acb7d8a..e7e0674 100644
--- a/Year 3/Compilers, Introduction/coolc-spim/my-code/coursework/pa1/cool.flex
+++ b/Year 3/Compilers, Introduction/coolc-spim/my-code/coursework/pa1/cool.flex
@@ -49,32 +49,39 @@ extern YYSTYPE cool_yylval;
  * Define names for regular expressions here.
  */
 
-DARROW          =>
+/* 
+Info from /usr/class/cs143/cool/include/PA2/cool-parse.h
+Token:
+CLASS ELSE FI IF IN INHERITS LET LOOP POOL THEN WHILE CASE ESAC OF DARROW NEW ISVOID STR_CONST INT_CONST BOOL_CONST TYPEID OBJECTID ASSIGN NOT LE ERROR
+yylval types:
+  Boolean boolean;
+  Symbol symbol;
+  Program program;
+  Class_ class_;
+  Classes classes;
+  Feature feature;
+  Features features;
+  Formal formal;
+  Formals formals;
+  Case case_;
+  Cases cases;
+  Expression expression;
+  Expressions expressions;
+  char *error_msg;
+*/
 
-%%
-
- /*
-  *  Nested comments
-  */
-
-
- /*
-  *  The multiple-character operators.
-  */
-{DARROW}		{ return (DARROW); }
+OCBRACE	\{
+CCBRACE	\}
+ORBRACE \(
+CRBRACE \)
+COLUMN	\:
+SEMICOLUMN	\;
 
- /*
-  * Keywords are case-insensitive except for the values true and false,
-  * which must begin with a lower-case letter.
-  */
-
-
- /*
-  *  String constants (C syntax)
-  *  Escape sequence \c is accepted for all characters c. Except for 
-  *  \n \t \b \f, the result is c.
-  *
-  */
+%%
 
+"=>"	{ return (DARROW); }
+"class"		{ return (CLASS); }
+[A-Z][a-z]*	{ cool_yylval.symbol = inttable.add_string(yytext); return (TYPEID); }
+\{|\}|\(|\)|:|;	{ return *yytext; }
 
 %%