1 files changed, 31 insertions, 0 deletions
diff --git a/src/minijava/symboltable/MClasses.java b/src/minijava/symboltable/MClasses.java
new file mode 100644
index 0000000..a4d066f
--- /dev/null
+++ b/src/minijava/symboltable/MClasses.java
@@ -0,0 +1,31 @@
+/**
+ * 所有声明的类的列表
+ */
+package minijava.symboltable;
+
+import java.util.Vector;
+
+public class MClasses extends MType {
+	public Vector<MClass> mj_classes = new Vector<MClass>(); // 用于存放类
+
+	// 在表中插入类
+	public String InsertClass(MClass v_class) { 
+		String class_name = v_class.getName();
+		if (Repeated(class_name)) // 如已经定义过该类，返回错误信息
+			return "Class double declaration " + "\"" + class_name + "\"";
+		mj_classes.addElement(v_class);
+		return null;
+	}
+
+	// 判定是否定义同名的类
+	public boolean Repeated(String class_name) {
+		int sz = mj_classes.size();
+		for (int i = 0; i < sz; i++) {
+			String c_name = ((MClass) mj_classes.elementAt(i)).getName();
+			if (c_name.equals(class_name))
+				return true;
+		}
+		return false;
+	}
+}
+