From 6f42d803d875427bb705c0deddd10a9f8a13eb93 Mon Sep 17 00:00:00 2001
From: Iru Cai <mytbk920423@gmail.com>
Date: Fri, 24 Oct 2014 20:42:47 +0800
Subject: Begin miniJava to Piglet

---
 src/minijava/minijava2piglet/Main.java        | 23 ++++++++++++++++++-----
 src/minijava/minijava2piglet/PigletLabel.java |  9 +++++++++
 src/minijava/minijava2piglet/PigletTemp.java  |  9 +++++++++
 3 files changed, 36 insertions(+), 5 deletions(-)
 create mode 100644 src/minijava/minijava2piglet/PigletLabel.java
 create mode 100644 src/minijava/minijava2piglet/PigletTemp.java

diff --git a/src/minijava/minijava2piglet/Main.java b/src/minijava/minijava2piglet/Main.java
index 02e5e22..9e8607a 100644
--- a/src/minijava/minijava2piglet/Main.java
+++ b/src/minijava/minijava2piglet/Main.java
@@ -3,23 +3,36 @@ package minijava.minijava2piglet;
 import minijava.MiniJavaParser;
 import minijava.ParseException;
 import minijava.TokenMgrError;
+import minijava.symboltable.MClasses;
 import minijava.syntaxtree.Node;
+import minijava.typecheck.PrintError;
+import minijava.visitor.BuildSymbolTableVisitor;
 import minijava.visitor.GJDepthFirst;
+import minijava.visitor.GenPigletVisitor;
 
 
 public class Main { 
  
     public static void main(String[] args) {
     	try {
-    		Node root = new MiniJavaParser(System.in).Goal();
+			new MiniJavaParser(System.in);
+			Node root = MiniJavaParser.Goal();
+
+			// 初始化符号表中最大的类
+			MClasses my_classes = new MClasses();
+
+			// 遍历抽象语法树，建立符号表，检查是否重复定义
+			root.accept(new BuildSymbolTableVisitor(), my_classes);
+			
+			// 建立类的继承关系，寻找循环继承
+			my_classes.buildClassRelation();
+			
     		/*
     		 * TODO: Implement your own Visitors and other classes.
     		 * 
     		 */
-    		GJDepthFirst v = new GJDepthFirst<Object,Object>() {
-    		};
-    		//Traverse the Abstract Grammar Tree
-    		root.accept(v,null);
+    		GJDepthFirst v = new GenPigletVisitor();
+    		root.accept(v, my_classes);
     	}
     	catch(TokenMgrError e){
     		//Handle Lexical Errors
diff --git a/src/minijava/minijava2piglet/PigletLabel.java b/src/minijava/minijava2piglet/PigletLabel.java
new file mode 100644
index 0000000..b4cf917
--- /dev/null
+++ b/src/minijava/minijava2piglet/PigletLabel.java
@@ -0,0 +1,9 @@
+package minijava.minijava2piglet;
+
+public class PigletLabel {
+	static int nLabels = 0;
+	public static String newLabel() {
+		nLabels++;
+		return "L"+nLabels;
+	}
+}
diff --git a/src/minijava/minijava2piglet/PigletTemp.java b/src/minijava/minijava2piglet/PigletTemp.java
new file mode 100644
index 0000000..282f148
--- /dev/null
+++ b/src/minijava/minijava2piglet/PigletTemp.java
@@ -0,0 +1,9 @@
+package minijava.minijava2piglet;
+
+public class PigletTemp {
+	static int tmpid = 20;
+	public static String newTmp() {
+		tmpid++;
+		return "TEMP "+tmpid;
+	}
+}
-- 
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