finished some todo item and fix some bugs

src/core/data.js

@@ -30,5 +30,6 @@ module.exports = {
     addVar,
     assignVal,
     findVar,
-    deleteVar
+    deleteVar,
+    gVarMap
 }

src/core/genAST.js

@@ -21,8 +21,28 @@ function primary() {
     return asTnode;
 }
 
+function getIfAST(astNode) {
+    let state = genAST(astNode.left);
+    if(state){
+        genAST(astNode.mid);
+    }else{
+        if(astNode.right){
+            genAST(astNode.right);
+        }
+    }
+}
 
 function genAST(astNode,result=null){
+
+    switch (astNode.op) {
+        case ASTNodeTypes.T_IF:
+            return getIfAST(astNode);
+        case ASTNodeTypes.T_GLUE:
+            genAST(astNode.left);
+            genAST(astNode.right);
+            return;
+    }
+
     let leftResult,rightResult;
     if(astNode.left){
         leftResult = genAST(astNode.left);
@@ -49,12 +69,22 @@ function genAST(astNode,result=null){
             return findVar(astNode.value);
         case ASTNodeTypes.T_LVALUE:
             return assignVal(astNode.value,result);
-
+        case ASTNodeTypes.T_GE:
+            return  leftResult >= rightResult;
+        case ASTNodeTypes.T_GT:
+            return  leftResult > rightResult;
+        case ASTNodeTypes.T_LE:
+            return  leftResult <= rightResult;
+        case ASTNodeTypes.T_LT:
+            return  leftResult < rightResult;
+        case ASTNodeTypes.T_EQ:
+            return  leftResult === rightResult;
+        case ASTNodeTypes.T_NEQ:
+            return  leftResult !== rightResult;
 
         default:
             errPrint(`unknown ASTNode op : ${astNode.op}`);
     }
-
 }
 
 

src/core/parse.js

@@ -16,8 +16,9 @@ const {ASTNode} = require("./ASTnode");
 function varDeclaration() {
     let {token}  = gData;
     match(tokenTypes.T_VAR,"var");
-    if(match(tokenTypes.T_IDENT,"identifier")){
+    if(token.type === tokenTypes.T_IDENT){
         addVar(token.value);
+        scan();
     }else {
         errPrint(`unknown error : token type: ${token.type}`);
     }

src/index.js

@@ -2,17 +2,18 @@ const {init} = require("./init/init")
 const {scan} = require("./core/scanner");
 const {statement} = require("./core/parse");
 const {genAST} = require("./core/genAST");
-
+const {gVarMap} = require("./core/data");
 function main(){
 
    console.log("start compiling");
 
    init();
    scan();
    let astNodeTree = statement();
-   console.log(JSON.stringify(astNodeTree))
-   let result = genAST(astNodeTree);
-   console.log(result);
+   genAST(astNodeTree);
+
+   console.log(gVarMap);
+
    console.log("compiled finished");
 }
 

test/test3.js

@@ -1,13 +1,12 @@
 let a;
 let b;
-let c;
+let ccc;
 a = 1+7*6;
 b = 8*3*2;
 
 if(a > b){
-    c = a;
+    ccc = a;
 }else {
-    c = b;
+    ccc = b;
 }
-c = c + 7;
-
+ccc = ccc + 7;