/**
* Copyright 2011-2014 Asakusa Framework Team.
*
* Licensed 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 com.asakusafw.compiler.operator;
import java.util.EnumSet;
import java.util.Set;
import com.asakusafw.utils.java.model.syntax.Attribute;
import com.asakusafw.utils.java.model.syntax.ConstructorDeclaration;
import com.asakusafw.utils.java.model.syntax.FieldDeclaration;
import com.asakusafw.utils.java.model.syntax.MethodDeclaration;
import com.asakusafw.utils.java.model.syntax.ModelKind;
import com.asakusafw.utils.java.model.syntax.Modifier;
import com.asakusafw.utils.java.model.syntax.ModifierKind;
import com.asakusafw.utils.java.model.syntax.TypeBodyDeclaration;
import com.asakusafw.utils.java.model.syntax.TypeDeclaration;
import com.asakusafw.utils.java.model.syntax.VariableDeclarator;
/**
* ツリー探索用のユーティリティ。
*/
public class Find {
/**
* 全ての修飾子を返す。
* @param decl メンバ宣言
* @return 全ての修飾子
*/
public static Set<ModifierKind> modifiers(TypeBodyDeclaration decl) {
Set<ModifierKind> results = EnumSet.noneOf(ModifierKind.class);
for (Attribute attribute : decl.getModifiers()) {
if (attribute.getModelKind() != ModelKind.MODIFIER) {
continue;
}
Modifier modifier = (Modifier) attribute;
results.add(modifier.getModifierKind());
}
return results;
}
/**
* メソッドを探して返す。
* @param type 対象の型
* @param name メソッドの名前
* @return 発見したメソッド、存在しない場合は{@code null}
*/
public static MethodDeclaration method(TypeDeclaration type, String name) {
for (TypeBodyDeclaration member : type.getBodyDeclarations()) {
if (member.getModelKind() != ModelKind.METHOD_DECLARATION) {
continue;
}
MethodDeclaration method = (MethodDeclaration) member;
if (method.getName().getToken().equals(name)) {
return method;
}
}
return null;
}
/**
* フィールドを探して返す。
* @param type 対象の型
* @param name フィールドの名前
* @return 発見したフィールド、存在しない場合は{@code null}
*/
public static FieldDeclaration field(TypeDeclaration type, String name) {
for (TypeBodyDeclaration member : type.getBodyDeclarations()) {
if (member.getModelKind() != ModelKind.FIELD_DECLARATION) {
continue;
}
FieldDeclaration field = (FieldDeclaration) member;
for (VariableDeclarator var : field.getVariableDeclarators()) {
if (var.getName().getToken().equals(name)) {
return field;
}
}
}
return null;
}
/**
* コンストラクタを探して返す。
* @param type 対象の型
* @return 発見したコンストラクタ、存在しない場合は{@code null}
*/
public static ConstructorDeclaration constructor(TypeDeclaration type) {
for (TypeBodyDeclaration member : type.getBodyDeclarations()) {
if (member.getModelKind() != ModelKind.CONSTRUCTOR_DECLARATION) {
continue;
}
return (ConstructorDeclaration) member;
}
return null;
}
/**
* 型を探して返す。
* @param type 対象の型
* @param name 型の名前
* @return 発見した型、存在しない場合は{@code null}
*/
public static TypeDeclaration type(TypeDeclaration type, String name) {
for (TypeBodyDeclaration member : type.getBodyDeclarations()) {
if ((member instanceof TypeDeclaration) == false) {
continue;
}
TypeDeclaration inner = (TypeDeclaration) member;
if (inner.getName().getToken().equals(name)) {
return inner;
}
}
return null;
}
}