| /* |
| * 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.impl; |
| |
| import com.intellij.lang.ASTNode; |
| import com.intellij.psi.util.PsiTreeUtil; |
| import com.jetbrains.python.PythonDialectsTokenSetProvider; |
| import com.jetbrains.python.psi.PyExpression; |
| import com.jetbrains.python.psi.PySliceExpression; |
| import com.jetbrains.python.psi.PySliceItem; |
| import com.jetbrains.python.psi.types.PyTupleType; |
| import com.jetbrains.python.psi.types.PyType; |
| import com.jetbrains.python.psi.types.TypeEvalContext; |
| import org.jetbrains.annotations.NotNull; |
| import org.jetbrains.annotations.Nullable; |
| |
| /** |
| * @author yole |
| */ |
| public class PySliceExpressionImpl extends PyElementImpl implements PySliceExpression { |
| public PySliceExpressionImpl(ASTNode astNode) { |
| super(astNode); |
| } |
| |
| @Nullable |
| @Override |
| public PyType getType(@NotNull TypeEvalContext context, @NotNull TypeEvalContext.Key key) { |
| final PyType type = context.getType(getOperand()); |
| // TODO: Currently we don't evaluate the static range of the slice, so we have to return a generic tuple type without elements |
| if (type instanceof PyTupleType) { |
| return PyBuiltinCache.getInstance(this).getTupleType(); |
| } |
| return type; |
| } |
| |
| @NotNull |
| @Override |
| public PyExpression getOperand() { |
| return childToPsiNotNull(PythonDialectsTokenSetProvider.INSTANCE.getExpressionTokens(), 0); |
| } |
| |
| @Nullable |
| @Override |
| public PySliceItem getSliceItem() { |
| return PsiTreeUtil.getChildOfType(this, PySliceItem.class); |
| } |
| } |