From 0384c411107672aeb4bd1134d101b5dc62cc41bb Mon Sep 17 00:00:00 2001
From: David Walter Seikel
Date: Thu, 5 Jan 2012 09:03:42 +1000
Subject: Clean up the parser.

---
 LuaSL/src/LuaSL_parser.c | 92 +++++++-----------------------------------------
 1 file changed, 12 insertions(+), 80 deletions(-)

(limited to 'LuaSL/src/LuaSL_parser.c')

diff --git a/LuaSL/src/LuaSL_parser.c b/LuaSL/src/LuaSL_parser.c
index 9e1d3ca..c6026e2 100644
--- a/LuaSL/src/LuaSL_parser.c
+++ b/LuaSL/src/LuaSL_parser.c
@@ -1,86 +1,18 @@
-#include "LuaSL_parser_param.h"
-#include "LuaSL_yaccer.tab.h"
- 
- 
-int yyparse(void *param);
- 
-static int initParserParam(SParserParam* param)
-{
-        int ret = 0;
- 
-        ret = yylex_init(&param->scanner);
-        param->expression = NULL;
- 
-        return ret;
-}
- 
-static int destroyParserParam(SParserParam* param)
-{
-        return yylex_destroy(param->scanner);
-}
- 
-SExpression *getAST(const char *expr)
-{
-        SParserParam p;
-        YY_BUFFER_STATE state;
- 
-        if ( initParserParam(&p) )
-        {
-                // couldn't initialize
-                return NULL;
-        }
- 
-        state = yy_scan_string(expr, p.scanner);
- 
-        if ( yyparse(&p) )
-        {
-                // error parsing
-                return NULL;
-        }
- 
-        yy_delete_buffer(state, p.scanner);
- 
-        destroyParserParam(&p);
- 
-        return p.expression;
-}
- 
-int evaluate(SExpression *e)
-{
-        switch(e->type)
-        {
-                case eVALUE:
-                        return e->value;
-                case eMULTIPLY:
-                        return evaluate(e->left) * evaluate(e->right);
-                case ePLUS:
-                        return evaluate(e->left) + evaluate(e->right);
-                default:
-                        // shouldn't be here
-                        return 0;
-        }
-}
+#include "LuaSL_LSL_tree.h"
+#include <stdio.h>
 
-int yyerror(const char *msg)
-{
-	fprintf(stderr,"Error:%s\n",msg); return 0;
-}
 
 int main(void)
 {
-        SExpression *e = NULL;
-        char test[]=" 4 + 2*10 + 3*( 5 + 1 )";
-        int result = 0;
- 
-        e = getAST(test);
- 
-        result = evaluate(e);
- 
-        printf("Result of '%s' is %d\n", test, result);
- 
-        deleteExpression(e);
- 
-        return 0;
-}
+    char test[]=" 4 + 2*10 + 3*( 5 + 1 )";
+    SExpression *e = NULL;
+    int result = 0;
+
+    e = getAST(test);
+    result = evaluate(e);
+    printf("Result of '%s' is %d\n", test, result);
+    deleteExpression(e);
 
+    return 0;
+}
 
-- 
cgit v1.1