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.intrinsics;
018    
019    import com.intellij.psi.PsiElement;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.asm4.Type;
022    import org.jetbrains.asm4.commons.InstructionAdapter;
023    import org.jetbrains.jet.codegen.ExpressionCodegen;
024    import org.jetbrains.jet.codegen.StackValue;
025    import org.jetbrains.jet.codegen.state.GenerationState;
026    import org.jetbrains.jet.lang.psi.JetBinaryExpression;
027    import org.jetbrains.jet.lang.psi.JetExpression;
028    
029    import java.util.List;
030    
031    public class RangeTo implements IntrinsicMethod {
032    
033        public RangeTo() {
034        }
035    
036        @Override
037        public StackValue generate(
038                ExpressionCodegen codegen,
039                InstructionAdapter v,
040                @NotNull Type expectedType,
041                PsiElement element,
042                List<JetExpression> arguments,
043                StackValue receiver,
044                @NotNull GenerationState state
045        ) {
046            if (arguments.size() == 1) {
047                Type leftType = receiver.type;
048                Type rightType = codegen.expressionType(arguments.get(0));
049                receiver.put(leftType, v);
050                codegen.gen(arguments.get(0), rightType);
051                v.invokestatic("jet/runtime/Ranges", "rangeTo",
052                               "(" + receiver.type.getDescriptor() + leftType.getDescriptor() + ")" + expectedType.getDescriptor());
053                return StackValue.onStack(expectedType);
054            }
055            else {
056                JetBinaryExpression expression = (JetBinaryExpression) element;
057                Type leftType = codegen.expressionType(expression.getLeft());
058                Type rightType = codegen.expressionType(expression.getRight());
059                //            if (JetTypeMapper.isIntPrimitive(leftType)) {
060                codegen.gen(expression.getLeft(), leftType);
061                codegen.gen(expression.getRight(), rightType);
062                v.invokestatic("jet/runtime/Ranges", "rangeTo",
063                               "(" + leftType.getDescriptor() + rightType.getDescriptor() + ")" + expectedType.getDescriptor());
064                return StackValue.onStack(expectedType);
065                //            }
066                //            else {
067                //                throw new UnsupportedOperationException("ranges are only supported for int objects");
068                //            }
069            }
070        }
071    }