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/*
* 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.openapi.extensions.Extensions;
import com.intellij.psi.util.PsiTreeUtil;
import com.jetbrains.python.PyElementTypes;
import com.jetbrains.python.codeInsight.controlflow.ControlFlowCache;
import com.jetbrains.python.psi.*;
import com.jetbrains.python.psi.types.PyFunctionType;
import com.jetbrains.python.psi.types.PyType;
import com.jetbrains.python.psi.types.TypeEvalContext;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import java.util.Map;
/**
* @author yole
*/
public class PyLambdaExpressionImpl extends PyElementImpl implements PyLambdaExpression {
public PyLambdaExpressionImpl(ASTNode astNode) {
super(astNode);
}
protected void acceptPyVisitor(PyElementVisitor pyVisitor) {
pyVisitor.visitPyLambdaExpression(this);
}
public PyType getType(@NotNull TypeEvalContext context, @NotNull TypeEvalContext.Key key) {
for (PyTypeProvider provider : Extensions.getExtensions(PyTypeProvider.EP_NAME)) {
final PyType type = provider.getCallableType(this, context);
if (type != null) {
return type;
}
}
return new PyFunctionType(this);
}
@NotNull
public PyParameterList getParameterList() {
final PyElement child = childToPsi(PyElementTypes.PARAMETER_LIST_SET, 0);
if (child == null) {
throw new RuntimeException("parameter list must not be null; text=" + getText());
}
//noinspection unchecked
return (PyParameterList)child;
}
@Nullable
@Override
public PyType getReturnType(@NotNull TypeEvalContext context, @NotNull TypeEvalContext.Key key) {
final PyExpression body = getBody();
return body != null ? context.getType(body) : null;
}
@Nullable
@Override
public PyType getCallType(@NotNull TypeEvalContext context, @NotNull PyCallSiteExpression callSite) {
return context.getReturnType(this);
}
@Nullable
@Override
public PyType getCallType(@Nullable PyExpression receiver,
@NotNull Map<PyExpression, PyNamedParameter> parameters,
@NotNull TypeEvalContext context) {
return context.getReturnType(this);
}
@Nullable
public PyExpression getBody() {
return PsiTreeUtil.getChildOfType(this, PyExpression.class);
}
public PyFunction asMethod() {
return null; // we're never a method
}
@Override
public void subtreeChanged() {
super.subtreeChanged();
ControlFlowCache.clear(this);
}
@Nullable
@Override
public String getQualifiedName() {
return null;
}
}
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