001    /*
002     * Copyright 2010-2013 JetBrains s.r.o.
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    
017    package org.jetbrains.jet.codegen.context;
018    
019    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.annotations.Nullable;
021    import org.jetbrains.asm4.Label;
022    import org.jetbrains.jet.codegen.OwnerKind;
023    import org.jetbrains.jet.codegen.StackValue;
024    import org.jetbrains.jet.codegen.binding.MutableClosure;
025    import org.jetbrains.jet.codegen.state.GenerationState;
026    import org.jetbrains.jet.lang.descriptors.CallableMemberDescriptor;
027    import org.jetbrains.jet.lang.descriptors.DeclarationDescriptor;
028    import org.jetbrains.jet.lang.descriptors.FunctionDescriptor;
029    import org.jetbrains.jet.lang.descriptors.PropertyAccessorDescriptor;
030    import org.jetbrains.jet.lang.resolve.java.AsmTypeConstants;
031    
032    public class MethodContext extends CodegenContext<CallableMemberDescriptor> {
033    
034        private Label methodStartLabel;
035    
036        protected MethodContext(
037                @NotNull FunctionDescriptor contextDescriptor,
038                @NotNull OwnerKind contextKind,
039                @NotNull CodegenContext parentContext,
040                @Nullable MutableClosure closure
041        ) {
042            super(contextDescriptor instanceof PropertyAccessorDescriptor
043                  ? ((PropertyAccessorDescriptor) contextDescriptor).getCorrespondingProperty()
044                  : contextDescriptor, contextKind, parentContext, closure,
045                  parentContext.hasThisDescriptor() ? parentContext.getThisDescriptor() : null, null);
046        }
047    
048        @Override
049        public StackValue lookupInContext(DeclarationDescriptor d, @Nullable StackValue result, GenerationState state, boolean ignoreNoOuter) {
050            if (getContextDescriptor() == d) {
051                return result != null ? result : StackValue.local(0, AsmTypeConstants.OBJECT_TYPE);
052            }
053    
054            //noinspection ConstantConditions
055            return getParentContext().lookupInContext(d, result, state, ignoreNoOuter);
056        }
057    
058        @Override
059        public boolean isStatic() {
060            //noinspection ConstantConditions
061            return getParentContext().isStatic();
062        }
063    
064        @Override
065        public StackValue getOuterExpression(StackValue prefix, boolean ignoreNoOuter) {
066            //noinspection ConstantConditions
067            return getParentContext().getOuterExpression(prefix, false);
068        }
069    
070        @Nullable
071        public Label getMethodStartLabel() {
072            return methodStartLabel;
073        }
074    
075        public void setMethodStartLabel(@NotNull Label methodStartLabel) {
076            this.methodStartLabel = methodStartLabel;
077        }
078    
079        @Override
080        public String toString() {
081            return "Method: " + getContextDescriptor();
082        }
083    
084    }