From 0f1c5cf0bc56cbbc990d4f57ced59c518a5cc114 Mon Sep 17 00:00:00 2001
From: Iru Cai <mytbk920423@gmail.com>
Date: Thu, 9 Oct 2014 21:27:22 +0800
Subject: Update debugging support

---
 src/minijava/symboltable/MClass.java              | 17 +++++++++++++++++
 src/minijava/symboltable/MClasses.java            |  7 +++++++
 src/minijava/symboltable/MMethod.java             | 15 ++++++++++++++-
 src/minijava/symboltable/MMethodList.java         |  4 ++++
 src/minijava/symboltable/MVarList.java            |  4 ++++
 src/minijava/symboltable/MVariable.java           |  5 +++++
 src/minijava/symboltable/OutputFormat.java        | 12 ++++++++++++
 src/minijava/typecheck/Main.java                  |  9 +++++++--
 src/minijava/visitor/BuildSymbolTableVisitor.java | 21 +++++++++++----------
 9 files changed, 81 insertions(+), 13 deletions(-)
 create mode 100644 src/minijava/symboltable/OutputFormat.java

diff --git a/src/minijava/symboltable/MClass.java b/src/minijava/symboltable/MClass.java
index 4e64f54..37bfcfb 100644
--- a/src/minijava/symboltable/MClass.java
+++ b/src/minijava/symboltable/MClass.java
@@ -38,5 +38,22 @@ public class MClass extends MLocalVarType {
 		methods.addMethod(method);
 		return null;
 	}
+	
+	// 调试输出: 打印该类的信息
+	public void printClass(int spaces) {
+		String ps = OutputFormat.spaces(spaces);
+		if (this.extend_class_name!=null) {
+			System.err.println(ps + "Class "+this.name+" extends "+this.extend_class_name);
+		} else {
+			System.err.println(ps + "Class "+this.name);
+		}
+		for (int i=0; i<vars.size(); i++) {
+			vars.varlist.elementAt(i).printVar(spaces+2);
+			System.err.println();
+		}
+		for (int i=0; i<methods.size(); i++) {
+			methods.methods.elementAt(i).printMethod(spaces+2);
+		}
+	}
 }
 
diff --git a/src/minijava/symboltable/MClasses.java b/src/minijava/symboltable/MClasses.java
index a4d066f..2df2ba8 100644
--- a/src/minijava/symboltable/MClasses.java
+++ b/src/minijava/symboltable/MClasses.java
@@ -27,5 +27,12 @@ public class MClasses extends MType {
 		}
 		return false;
 	}
+	
+	// 调试输出: 打印所有的类的信息
+	public void printClasses(int spaces) {
+		for (int i=0; i<mj_classes.size(); i++) {
+			mj_classes.elementAt(i).printClass(spaces);
+		}
+	}
 }
 
diff --git a/src/minijava/symboltable/MMethod.java b/src/minijava/symboltable/MMethod.java
index ea2a363..3b0888e 100644
--- a/src/minijava/symboltable/MMethod.java
+++ b/src/minijava/symboltable/MMethod.java
@@ -10,7 +10,6 @@ public class MMethod extends MLocalVarType {
 		super(m_line, m_column);
 		this.name = m_name;
 		this.ret_type_name = ret_type;
-		ret_type_name = null;
 		paramList = new MVarList();
 	}
 	
@@ -34,4 +33,18 @@ public class MMethod extends MLocalVarType {
 		paramList.insertVar(var);
 		return null;
 	}
+	
+	public void printMethod(int spaces) {
+		String ps = OutputFormat.spaces(spaces);
+		System.err.print(ps + this.ret_type_name + " " + this.name + "(");
+		for (int i=0; i<paramList.size(); i++) {
+			if (i>0) System.err.print(",");
+			paramList.varlist.elementAt(i).printVar(0);
+		}
+		System.err.println(")");
+		for (int i=0; i<vars.size(); i++) {
+			vars.varlist.elementAt(i).printVar(spaces+2);
+			System.err.println();
+		}
+	}
 }
diff --git a/src/minijava/symboltable/MMethodList.java b/src/minijava/symboltable/MMethodList.java
index 34f79e6..01bef3c 100644
--- a/src/minijava/symboltable/MMethodList.java
+++ b/src/minijava/symboltable/MMethodList.java
@@ -21,4 +21,8 @@ public class MMethodList extends MType {
 		}
 		return -1;
 	}
+	
+	public int size() {
+		return methods.size();
+	}
 }
diff --git a/src/minijava/symboltable/MVarList.java b/src/minijava/symboltable/MVarList.java
index ede97fc..79f7457 100644
--- a/src/minijava/symboltable/MVarList.java
+++ b/src/minijava/symboltable/MVarList.java
@@ -21,4 +21,8 @@ public class MVarList extends MType {
 		}
 		return -1;
 	}
+	
+	public int size() {
+		return varlist.size();
+	}
 }
diff --git a/src/minijava/symboltable/MVariable.java b/src/minijava/symboltable/MVariable.java
index 2655561..4501396 100644
--- a/src/minijava/symboltable/MVariable.java
+++ b/src/minijava/symboltable/MVariable.java
@@ -8,4 +8,9 @@ public class MVariable extends MType {
 		name = v_name;
 		typename = v_type;
 	}
+	
+	public void printVar(int spaces) {
+		String ps = OutputFormat.spaces(spaces);
+		System.err.print(ps + typename + " " + this.name);
+	}
 }
diff --git a/src/minijava/symboltable/OutputFormat.java b/src/minijava/symboltable/OutputFormat.java
new file mode 100644
index 0000000..71a819e
--- /dev/null
+++ b/src/minijava/symboltable/OutputFormat.java
@@ -0,0 +1,12 @@
+package minijava.symboltable;
+
+public class OutputFormat {
+	public static String spaces(int n) {
+		String s = "";
+		while (n>0) {
+			s+=" ";
+			n--;
+		}
+		return s;
+	}
+}
diff --git a/src/minijava/typecheck/Main.java b/src/minijava/typecheck/Main.java
index 35ac860..7319fe4 100644
--- a/src/minijava/typecheck/Main.java
+++ b/src/minijava/typecheck/Main.java
@@ -20,11 +20,16 @@ public class Main {
 			Node root = MiniJavaParser.Goal();
 
 			// 初始化符号表中最大的类
-			MType my_classes = new MClasses();
+			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);
-
+			
+			// 输出符号表信息
+			if (args.length>0 && args[0].equals("--debug")){
+				my_classes.printClasses(0);
+			}
+			
 			// 打印错误信息
 			PrintError.printAll();
 		} catch (TokenMgrError e) {
diff --git a/src/minijava/visitor/BuildSymbolTableVisitor.java b/src/minijava/visitor/BuildSymbolTableVisitor.java
index ecc1a06..1a09957 100644
--- a/src/minijava/visitor/BuildSymbolTableVisitor.java
+++ b/src/minijava/visitor/BuildSymbolTableVisitor.java
@@ -114,14 +114,15 @@ public class BuildSymbolTableVisitor extends GJDepthFirst<MType, MType> {
       n.f2.accept(this, argu);
       n.f3.accept(this, argu);
       n.f4.accept(this, argu);
-      n.f5.accept(this, argu);
-      n.f6.accept(this, argu);
-      n.f7.accept(this, argu);
-      n.f8.accept(this, argu);
-      n.f9.accept(this, argu);
-      n.f10.accept(this, argu);
-      // main的参数，待处理
-      n.f11.accept(this, argu);
+      
+      // 往main class中添加main方法
+      MMethod main_method = new MMethod("main", "void", n.f6.beginLine, n.f6.beginColumn);
+      MIdentifier argid = (MIdentifier) n.f11.accept(this, argu);
+      MVariable param = new MVariable(argid.getName(), "String[]", 
+    		  argid.getLine(), argid.getColumn());
+      main_method.addParam(param);
+      m_class.insertMethod(main_method);
+      
       n.f12.accept(this, argu);
       n.f13.accept(this, argu);
       // printStatement
@@ -224,8 +225,8 @@ public class BuildSymbolTableVisitor extends GJDepthFirst<MType, MType> {
       String var_name = n.f1.accept(this, argu).getName();
       String type_name = n.f0.accept(this, argu).getName();
       // debug
-      System.out.println("Variable: \'" + var_name + "\' from class/method " + m_class.getName());
-      System.out.println("It has type: " + type_name);
+      // System.out.println("Variable: \'" + var_name + "\' from class/method " + m_class.getName());
+      // System.out.println("It has type: " + type_name);
       
       // 建立并插入变量
       MVariable var = new MVariable(var_name, type_name, n.f1.f0.beginLine, n.f1.f0.beginColumn);
-- 
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