Begin miniJava to Piglet

3 files changed, 36 insertions, 5 deletions

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;
+	}
+}