From 9ad38f79de2255256a45b82efe3d8924a52d659f Mon Sep 17 00:00:00 2001
From: David Walter Seikel
Date: Mon, 9 Jan 2012 10:51:58 +1000
Subject: Moved yyerror() into the flex source.  Added a count function, CHAR,
 STRING, and comment stripping.

Well, half of comment stripping, it will fail without the other half.  lol
---
 LuaSL/src/LuaSL_LSL_tree.c |  6 ------
 LuaSL/src/LuaSL_lexer.l    | 36 ++++++++++++++++++++++++++++++++++--
 2 files changed, 34 insertions(+), 8 deletions(-)

(limited to 'LuaSL')

diff --git a/LuaSL/src/LuaSL_LSL_tree.c b/LuaSL/src/LuaSL_LSL_tree.c
index 48415fc..76dd433 100644
--- a/LuaSL/src/LuaSL_LSL_tree.c
+++ b/LuaSL/src/LuaSL_LSL_tree.c
@@ -404,12 +404,6 @@ static void convertAST2Lua(LSL_AST *ast)
     }
 }
 
-int yyerror(const char *msg)
-{
-    fprintf(stderr, "Parser error: %s\n", msg);
-    return 0;
-}
-
 int main(int argc, char **argv)
 {
     char *programName = argv[0];
diff --git a/LuaSL/src/LuaSL_lexer.l b/LuaSL/src/LuaSL_lexer.l
index 631a44b..291d0c9 100644
--- a/LuaSL/src/LuaSL_lexer.l
+++ b/LuaSL/src/LuaSL_lexer.l
@@ -2,13 +2,16 @@
 
 #define excludeLexer
 #include "LuaSL_LSL_tree.h"
+#include <stdio.h>
+
+void count(char *text);
 
 #ifdef LUASL_DEBUG
     #undef ECHO
-    #define ECHO printf ("[%s]\n", yytext)
+    #define ECHO count(yytext); printf ("[%s]\n", yytext)
 #else
     #undef ECHO
-    #define ECHO {}
+    #define ECHO count(yytext)
 #endif
 
 %}
@@ -23,6 +26,8 @@ HEX         [[:xdigit:]]
 INTEGER     [[:digit:]]+
 EXPONANT    [eE][+-]?{INTEGER}
 FLOAT       {INTEGER}("."{INTEGER})?{EXPONANT}?
+CHAR        '(\\.|[^\\'\n])+'
+STRING      \"(\\.|[^\\"\n])*\"
 NAME        [[:alpha:]](_|[[:alpha:]]|[[:digit:]])*
 
 %%
@@ -31,6 +36,8 @@ NAME        [[:alpha:]](_|[[:alpha:]]|[[:digit:]])*
 
  /* White space. */
 [[:space:]]+    %{ ECHO; /* yylval->spaceValue = strdup(yytext); return LSL_SPACE; */ %}
+"/*"            %{ /* count(); comment(); */ %}
+"//"[^\n]*      %{ /* consume //-comment */ %}
 
  /* Operations. */
 "&&"            { ECHO; return LSL_BOOL_AND; }
@@ -109,6 +116,31 @@ NAME        [[:alpha:]](_|[[:alpha:]]|[[:digit:]])*
 
 %%
 
+int column = 0;
+int line = 0;
+
+void count(char *text)
+{
+    int i;
+
+    for (i = 0; text[i] != '\0'; i++)
+	if (text[i] == '\n')
+	{
+	    column = 0;
+	    line++;
+	}
+	else if (text[i] == '\t')
+	    column += 8 - (column % 8);
+	else
+	    column++;
+}
+
+int yyerror(const char *msg)
+{
+    fprintf(stderr, "Parser error on line %d, column %d: %s\n", line, column, msg);
+    return 0;
+}
+
 int yywrap(yyscan_t yyscanner)
 {
 #ifdef FLEX_SCANNER
-- 
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