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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.codehaus.groovy.classgen;
import org.codehaus.groovy.ast.ClassCodeVisitorSupport;
import org.codehaus.groovy.ast.ClassHelper;
import org.codehaus.groovy.ast.ClassNode;
import org.codehaus.groovy.ast.FieldNode;
import org.codehaus.groovy.ast.InnerClassNode;
import org.codehaus.groovy.ast.Parameter;
import org.codehaus.groovy.ast.VariableScope;
import org.codehaus.groovy.ast.expr.ArgumentListExpression;
import org.codehaus.groovy.ast.expr.BinaryExpression;
import org.codehaus.groovy.ast.expr.ConstantExpression;
import org.codehaus.groovy.ast.expr.Expression;
import org.codehaus.groovy.ast.expr.FieldExpression;
import org.codehaus.groovy.ast.expr.GStringExpression;
import org.codehaus.groovy.ast.expr.MethodCallExpression;
import org.codehaus.groovy.ast.expr.PropertyExpression;
import org.codehaus.groovy.ast.expr.SpreadExpression;
import org.codehaus.groovy.ast.expr.VariableExpression;
import org.codehaus.groovy.ast.stmt.BlockStatement;
import org.codehaus.groovy.ast.stmt.ExpressionStatement;
import org.codehaus.groovy.ast.stmt.ReturnStatement;
import org.codehaus.groovy.syntax.Token;
import org.codehaus.groovy.syntax.Types;
import org.objectweb.asm.Opcodes;
import java.util.ArrayList;
import java.util.List;
public abstract class InnerClassVisitorHelper extends ClassCodeVisitorSupport {
protected static void setPropertyGetterDispatcher(BlockStatement block, Expression thiz, Parameter[] parameters) {
List gStringStrings = new ArrayList();
gStringStrings.add(new ConstantExpression(""));
gStringStrings.add(new ConstantExpression(""));
List gStringValues = new ArrayList();
gStringValues.add(new VariableExpression(parameters[0]));
block.addStatement(
new ReturnStatement(
new PropertyExpression(
thiz,
new GStringExpression("$name", gStringStrings, gStringValues)
)
)
);
}
protected static void setPropertySetterDispatcher(BlockStatement block, Expression thiz, Parameter[] parameters) {
List gStringStrings = new ArrayList();
gStringStrings.add(new ConstantExpression(""));
gStringStrings.add(new ConstantExpression(""));
List gStringValues = new ArrayList();
gStringValues.add(new VariableExpression(parameters[0]));
block.addStatement(
new ExpressionStatement(
new BinaryExpression(
new PropertyExpression(
thiz,
new GStringExpression("$name", gStringStrings, gStringValues)
),
Token.newSymbol(Types.ASSIGN, -1, -1),
new VariableExpression(parameters[1])
)
)
);
}
protected static void setMethodDispatcherCode(BlockStatement block, Expression thiz, Parameter[] parameters) {
List gStringStrings = new ArrayList();
gStringStrings.add(new ConstantExpression(""));
gStringStrings.add(new ConstantExpression(""));
List gStringValues = new ArrayList();
gStringValues.add(new VariableExpression(parameters[0]));
block.addStatement(
new ReturnStatement(
new MethodCallExpression(
thiz,
new GStringExpression("$name", gStringStrings, gStringValues),
new ArgumentListExpression(
new SpreadExpression(new VariableExpression(parameters[1]))
)
)
)
);
}
protected static boolean isStatic(InnerClassNode node) {
VariableScope scope = node.getVariableScope();
if (scope != null) return scope.isInStaticContext();
return (node.getModifiers() & Opcodes.ACC_STATIC) != 0;
}
protected static ClassNode getClassNode(ClassNode node, boolean isStatic) {
if (isStatic) node = ClassHelper.CLASS_Type;
return node;
}
protected static int getObjectDistance(ClassNode node) {
int count = 0;
while (node != null && node != ClassHelper.OBJECT_TYPE) {
count++;
node = node.getSuperClass();
}
return count;
}
protected static void addFieldInit(Parameter p, FieldNode fn, BlockStatement block) {
VariableExpression ve = new VariableExpression(p);
FieldExpression fe = new FieldExpression(fn);
block.addStatement(new ExpressionStatement(
new BinaryExpression(fe, Token.newSymbol(Types.ASSIGN, -1, -1), ve)
));
}
protected static boolean shouldHandleImplicitThisForInnerClass(ClassNode cn) {
if (cn.isEnum() || cn.isInterface()) return false;
if ((cn.getModifiers() & Opcodes.ACC_STATIC) != 0) return false;
if (!(cn instanceof InnerClassNode)) return false;
InnerClassNode innerClass = (InnerClassNode) cn;
// scope != null means aic, we don't handle that here
if (innerClass.getVariableScope() != null) return false;
// static inner classes don't need this$0
return (innerClass.getModifiers() & Opcodes.ACC_STATIC) == 0;
}
}
