From f1a48f173922785a4f18ad789f1d0cd7080bb3d1 Mon Sep 17 00:00:00 2001
From: David Walter Seikel
Date: Fri, 6 Jan 2012 18:50:14 +1000
Subject: Added most of the expression parser.

---
 LuaSL/src/LuaSL_lexer.l | 36 +++++++++++++++++++++++++++++++-----
 1 file changed, 31 insertions(+), 5 deletions(-)

(limited to 'LuaSL/src/LuaSL_lexer.l')

diff --git a/LuaSL/src/LuaSL_lexer.l b/LuaSL/src/LuaSL_lexer.l
index c496d1d..11c20a0 100644
--- a/LuaSL/src/LuaSL_lexer.l
+++ b/LuaSL/src/LuaSL_lexer.l
@@ -17,19 +17,45 @@
 %option bison-bridge
 
 SPACE       [ \r\n\t]*
-NAME        [a-zA-Z_][a-zA-Z0-9_]*
-NUMBER      [0-9]+
+LETTER      [A-Za-z]
+DECIMAL     [0-9]
+HEX         [0-9A-Fa-f]
+
+NAME        {LETTER}(_|{LETTER}|{DECIMAL})*
+INTEGER     {DECIMAL}+
+EXPONANT    [eE][+-]?{INTEGER}
+FLOAT       {INTEGER}("."{INTEGER})?{EXPONANT}?
 
 %%
 
 {SPACE}         { ECHO; /* Skip blanks. */ }
 {NAME}          { ECHO; /* yylval->nameValue=strdup(yytext); return LSL_NAME; */ }
-{NUMBER}        { ECHO; yylval->integerValue = atoi(yytext); return LSL_INTEGER; }
+{INTEGER}       { ECHO; yylval->integerValue = atoi(yytext); return LSL_INTEGER; }
+{FLOAT}         { ECHO; /* yylval->floatValue = atof(yytext); return LSL_FLOAT; */ }
 
+"&&"            { ECHO; return LSL_BOOL_AND; }
+"||"            { ECHO; return LSL_BOOL_OR; }
+"|"             { ECHO; return LSL_BIT_OR; }
+"^"             { ECHO; return LSL_BIT_XOR; }
+"&"             { ECHO; return LSL_BIT_AND; }
+"!="            { ECHO; return LSL_NOT_EQUAL; }
+"=="            { ECHO; return LSL_EQUAL; }
+">="            { ECHO; return LSL_GREATER_EQUAL; }
+"<="            { ECHO; return LSL_LESS_EQUAL; }
+">"             { ECHO; return LSL_GREATER_THAN; }
+"<"             { ECHO; return LSL_LESS_THAN; }
+">>"            { ECHO; return LSL_RIGHT_SHIFT; }
+"<<"            { ECHO; return LSL_LEFT_SHIFT; }
+"+"             { ECHO; return LSL_ADD; }
+"-"             { ECHO; return LSL_SUBTRACT; }
+"*"             { ECHO; return LSL_MULTIPLY; }
+"%"             { ECHO; return LSL_MODULO; }
+"/"             { ECHO; return LSL_DIVIDE; }
+"!"             { ECHO; return LSL_BOOL_NOT; }
+"~"             { ECHO; return LSL_BIT_NOT; }
 "("             { ECHO; return LSL_PARENTHESIS_OPEN; }
 ")"             { ECHO; return LSL_PARENTHESIS_CLOSE; }
-"*"             { ECHO; return LSL_MULTIPLY; }
-"+"             { ECHO; return LSL_ADD; }
+
 .               { ECHO; printf(" unexpected character.\n"); }
 
 %%
-- 
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