From 8e5c2dcb54fc39ad10101bf7e705e7729c62c965 Mon Sep 17 00:00:00 2001
From: David Walter Seikel
Date: Sat, 7 Jan 2012 19:26:07 +1000
Subject: We don't need LSL_Expression.

---
 LuaSL/src/LuaSL_LSL_tree.c | 39 +++++++--------------------------------
 LuaSL/src/LuaSL_LSL_tree.h | 18 +++++-------------
 2 files changed, 12 insertions(+), 45 deletions(-)

(limited to 'LuaSL')

diff --git a/LuaSL/src/LuaSL_LSL_tree.c b/LuaSL/src/LuaSL_LSL_tree.c
index e6dfa4c..78414fe 100644
--- a/LuaSL/src/LuaSL_LSL_tree.c
+++ b/LuaSL/src/LuaSL_LSL_tree.c
@@ -104,28 +104,6 @@ LSL_Token **tokens = NULL;
 int lowestToken = 999999;
 
 
-static LSL_Expression *newLSLExpression(LSL_Type type, LSL_Expression *left, LSL_Expression *right)
-{
-    LSL_Expression *exp = malloc(sizeof(LSL_Expression));
-
-    if (exp == NULL) return NULL;
-
-    exp->left = left;
-    exp->right = right;
-    exp->token = tokens[type - lowestToken];
-
-    return exp;
-}
-
-static void burnLSLExpression(LSL_Expression *exp)
-{
-    if (exp == NULL) return;
-
-    burnLSLExpression(exp->left);
-    burnLSLExpression(exp->right);
-    free(exp);
-}
-
 static LSL_AST *newAST(LSL_Type type, LSL_AST *left, LSL_AST *right)
 {
     LSL_AST *ast = malloc(sizeof(LSL_AST));
@@ -147,13 +125,10 @@ static void burnAST(LSL_AST *ast)
 
     burnAST(ast->left);
     burnAST(ast->right);
-    // Burn the contents to.
-    if ((ast->token) && (ast->token->type == LSL_EXPRESSION))
-	burnLSLExpression(ast->content.expressionValue);
     free(ast);
 }
 
-LSL_AST *addExpression(LSL_Expression *exp)
+LSL_AST *addExpression(LSL_AST *exp)
 {
     LSL_AST *ast = newAST(LSL_EXPRESSION, NULL, NULL);
 
@@ -163,9 +138,9 @@ LSL_AST *addExpression(LSL_Expression *exp)
     return ast;
 }
 
-LSL_Expression *addInteger(int value)
+LSL_AST *addInteger(int value)
 {
-    LSL_Expression *exp = newLSLExpression(LSL_INTEGER, NULL, NULL);
+    LSL_AST *exp = newAST(LSL_INTEGER, NULL, NULL);
 
     if (exp)
 	exp->content.integerValue = value;
@@ -173,9 +148,9 @@ LSL_Expression *addInteger(int value)
     return exp;
 }
 
-LSL_Expression *addOperation(LSL_Operation type, LSL_Expression *left, LSL_Expression *right)
+LSL_AST *addOperation(LSL_Operation type, LSL_AST *left, LSL_AST *right)
 {
-    LSL_Expression *exp = newLSLExpression(LSL_EXPRESSION, left, right);
+    LSL_AST *exp = newAST(LSL_EXPRESSION, left, right);
 
     if (exp)
     {
@@ -198,7 +173,7 @@ static void evaluateIntegerToken(LSL_Leaf  *content, LSL_Value *result)
     }
 }
 
-static void evaluateExpression(LSL_Expression *exp, LSL_Value *result)
+static void evaluateExpression(LSL_AST *exp, LSL_Value *result)
 {
     LSL_Value left, right;
 
@@ -300,7 +275,7 @@ static void evaluateAST(LSL_AST *ast, LSL_Value *result)
 	ast->token->evaluate(&(ast->content), result);
 }
 
-static void outputExpression(LSL_Expression *exp)
+static void outputExpression(LSL_AST *exp)
 {
     if (NULL == exp)
 	return;
diff --git a/LuaSL/src/LuaSL_LSL_tree.h b/LuaSL/src/LuaSL_LSL_tree.h
index 0d49737..4764ce8 100644
--- a/LuaSL/src/LuaSL_LSL_tree.h
+++ b/LuaSL/src/LuaSL_LSL_tree.h
@@ -122,7 +122,7 @@ typedef int LSL_Type;
 typedef struct
 {
     LSL_Type			type;
-    struct LSL_Expression	*expressions;
+    struct LSL_AST		*expressions;
 } LSL_Statement;
 
 typedef struct
@@ -167,7 +167,7 @@ typedef union LSL_Leaf
     union LSL_Leaf		*listValue;
     char			*labelValue;
     LSL_Operation		operationValue;
-    struct LSL_Expression	*expressionValue;
+    struct LSL_AST		*expressionValue;
     LSL_Statement		*doValue;
     LSL_Statement		*forValue;
     LSL_Statement		*ifValue;
@@ -209,14 +209,6 @@ typedef struct
     LSL_Leaf		content;
 } LSL_Identifier;
 
-typedef struct LSL_Expression
-{
-    struct LSL_Expression	*left;
-    struct LSL_Expression	*right;
-    LSL_Token			*token;
-    LSL_Leaf			content;
-} LSL_Expression;
-
 typedef struct LSL_AST
 {
     struct LSL_AST	*left;
@@ -251,9 +243,9 @@ typedef struct
 #define YYLEX_PARAM   ((LuaSL_yyparseParam*)data)->scanner
 
 
-LSL_AST *addExpression(LSL_Expression *exp);
-LSL_Expression *addInteger(int value);
-LSL_Expression *addOperation(LSL_Operation type, LSL_Expression *left, LSL_Expression *right);
+LSL_AST *addExpression(LSL_AST *exp);
+LSL_AST *addInteger(int value);
+LSL_AST *addOperation(LSL_Operation type, LSL_AST *left, LSL_AST *right);
 
 int yyerror(const char *msg);
 int yyparse(void *param);
-- 
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