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ClassObj.java
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ClassObj.java
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package com.stuffwithstuff.magpie.interpreter;
import java.util.*;
import com.stuffwithstuff.magpie.ast.Expr;
/**
* A runtime object representing a class.
*/
public class ClassObj extends Obj {
/**
* Creates a new class object.
*
* @param classClass The class of this class.
* @param name The name of the class.
*/
public ClassObj(ClassObj classClass, String name, List<ClassObj> parents) {
super(classClass);
mName = name;
if (parents != null) {
mParents = parents;
} else {
mParents = new ArrayList<ClassObj>();
}
}
public String getName() { return mName; }
public List<ClassObj> getParents() { return mParents; }
public Map<String, Field> getFieldDefinitions() { return mFields; }
/**
* Gets whether or not this class is a subclass (or same class) as the given
* parent.
*/
public boolean isSubclassOf(ClassObj parent) {
if (this == parent) return true;
for (ClassObj myParent : mParents) {
if (myParent.isSubclassOf(parent)) return true;
}
return false;
}
public void declareField(String name, Expr type) {
// Declare the field.
mFields.put(name, new Field(null, type));
// Add a getter and setter.
/*
mMembers.defineGetter(name, new FieldGetter(name));
mMembers.defineSetter(name, new FieldSetter(name));
*/
}
@Override
public String toString() {
return mName;
}
private final String mName;
private final List<ClassObj> mParents;
private final Map<String, Field> mFields = new HashMap<String, Field>();
}