| /* |
| * Copyright 2000-2013 JetBrains s.r.o. |
| * |
| * 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.jetbrains.python.psi.types; |
| |
| import com.intellij.openapi.util.text.StringUtil; |
| import com.intellij.psi.PsiElement; |
| import com.intellij.util.Function; |
| import com.jetbrains.python.PyNames; |
| import com.jetbrains.python.psi.PyClass; |
| import com.jetbrains.python.psi.PyExpression; |
| import com.jetbrains.python.psi.impl.PyBuiltinCache; |
| import com.jetbrains.python.psi.impl.PyConstantExpressionEvaluator; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| import java.util.Arrays; |
| |
| /** |
| * @author yole |
| */ |
| public class PyTupleType extends PyClassTypeImpl implements PySubscriptableType { |
| private final PyType[] myElementTypes; |
| |
| PyTupleType(@NotNull PyClass tupleClass, PsiElement anchor, PyType[] elementTypes) { |
| super(tupleClass, false); |
| myElementTypes = elementTypes; |
| } |
| |
| @Nullable |
| public static PyTupleType create(PsiElement anchor, PyType[] elementTypes) { |
| PyClass tuple = PyBuiltinCache.getInstance(anchor).getClass(PyNames.TUPLE); |
| if (tuple != null) { |
| return new PyTupleType(tuple, anchor, elementTypes); |
| } |
| return null; |
| } |
| |
| public PyTupleType(PyTupleType origin, PyType[] elementTypes) { |
| super(origin.getPyClass(), false); |
| myElementTypes = elementTypes; |
| } |
| |
| public String getName() { |
| return "(" + StringUtil.join(myElementTypes, new Function<PyType, String>() { |
| @Nullable |
| public String fun(PyType pyType) { |
| return pyType == null ? PyNames.UNKNOWN_TYPE : pyType.getName(); |
| } |
| }, ", ") + ")"; |
| } |
| |
| @Override |
| public boolean isBuiltin() { |
| return true; |
| } |
| |
| public PyType getElementType(PyExpression index, TypeEvalContext context) { |
| final Object value = PyConstantExpressionEvaluator.evaluate(index); |
| if (value instanceof Integer) { |
| return getElementType(((Integer)value).intValue()); |
| } |
| return null; |
| } |
| |
| public PyType getElementType(int index) { |
| if (index >= 0 && index < myElementTypes.length) { |
| return myElementTypes[index]; |
| } |
| return null; |
| } |
| |
| public int getElementCount() { |
| return myElementTypes.length; |
| } |
| |
| @Override |
| public boolean equals(Object o) { |
| if (this == o) return true; |
| if (o == null || getClass() != o.getClass()) return false; |
| if (!super.equals(o)) return false; |
| |
| PyTupleType that = (PyTupleType)o; |
| |
| if (!Arrays.equals(myElementTypes, that.myElementTypes)) return false; |
| |
| return true; |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = super.hashCode(); |
| result = 31 * result + (myElementTypes != null ? Arrays.hashCode(myElementTypes) : 0); |
| return result; |
| } |
| } |