001    /*
002     * Copyright 2010-2015 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.kotlin.js.translate.operation;
018    
019    import com.google.dart.compiler.backend.js.ast.JsBinaryOperation;
020    import com.google.dart.compiler.backend.js.ast.JsExpression;
021    import com.intellij.psi.tree.IElementType;
022    import org.jetbrains.annotations.NotNull;
023    import org.jetbrains.kotlin.descriptors.FunctionDescriptor;
024    import org.jetbrains.kotlin.js.translate.callTranslator.CallTranslator;
025    import org.jetbrains.kotlin.js.translate.context.TranslationContext;
026    import org.jetbrains.kotlin.js.translate.utils.JsAstUtils;
027    import org.jetbrains.kotlin.js.translate.utils.TranslationUtils;
028    import org.jetbrains.kotlin.lexer.JetTokens;
029    import org.jetbrains.kotlin.psi.JetConstantExpression;
030    import org.jetbrains.kotlin.psi.JetExpression;
031    import org.jetbrains.kotlin.psi.JetUnaryExpression;
032    import org.jetbrains.kotlin.resolve.BindingContext;
033    import org.jetbrains.kotlin.resolve.BindingContextUtils;
034    import org.jetbrains.kotlin.resolve.calls.model.ResolvedCall;
035    import org.jetbrains.kotlin.resolve.constants.CompileTimeConstant;
036    import org.jetbrains.kotlin.resolve.constants.evaluate.ConstantExpressionEvaluator;
037    import org.jetbrains.kotlin.types.JetType;
038    
039    import static org.jetbrains.kotlin.js.translate.general.Translation.translateAsExpression;
040    import static org.jetbrains.kotlin.js.translate.utils.BindingUtils.getCompileTimeValue;
041    import static org.jetbrains.kotlin.js.translate.utils.ErrorReportingUtils.message;
042    import static org.jetbrains.kotlin.js.translate.utils.PsiUtils.getBaseExpression;
043    import static org.jetbrains.kotlin.js.translate.utils.PsiUtils.getOperationToken;
044    import static org.jetbrains.kotlin.js.translate.utils.TranslationUtils.*;
045    import static org.jetbrains.kotlin.resolve.calls.callUtil.CallUtilPackage.getFunctionResolvedCallWithAssert;
046    
047    public final class UnaryOperationTranslator {
048        private UnaryOperationTranslator() {
049        }
050    
051        @NotNull
052        public static JsExpression translate(
053                @NotNull JetUnaryExpression expression,
054                @NotNull TranslationContext context
055        ) {
056            IElementType operationToken = expression.getOperationReference().getReferencedNameElementType();
057            if (operationToken == JetTokens.EXCLEXCL) {
058                JetExpression baseExpression = getBaseExpression(expression);
059                JetType type = BindingContextUtils.getTypeNotNull(context.bindingContext(), baseExpression);
060                JsExpression translatedExpression = translateAsExpression(baseExpression, context);
061                return type.isMarkedNullable() ? sure(translatedExpression, context) : translatedExpression;
062            }
063    
064            if (operationToken == JetTokens.MINUS) {
065                JetExpression baseExpression = getBaseExpression(expression);
066                if (baseExpression instanceof JetConstantExpression) {
067                    CompileTimeConstant<?> compileTimeValue = ConstantExpressionEvaluator.getConstant(expression, context.bindingContext());
068                    assert compileTimeValue != null : message(expression, "Expression is not compile time value: " + expression.getText() + " ");
069                    Object value = getCompileTimeValue(context.bindingContext(), expression, compileTimeValue);
070                    if (value instanceof Long) {
071                        return JsAstUtils.newLong((Long) value, context);
072                    }
073                }
074            }
075    
076            if (IncrementTranslator.isIncrement(operationToken)) {
077                return IncrementTranslator.translate(expression, context);
078            }
079    
080            JsExpression baseExpression = TranslationUtils.translateBaseExpression(context, expression);
081            if (isExclForBinaryEqualLikeExpr(expression, baseExpression)) {
082                return translateExclForBinaryEqualLikeExpr((JsBinaryOperation) baseExpression);
083            }
084    
085            ResolvedCall<? extends FunctionDescriptor> resolvedCall = getFunctionResolvedCallWithAssert(expression, context.bindingContext());
086            return CallTranslator.INSTANCE$.translate(context, resolvedCall, baseExpression);
087        }
088    
089        private static boolean isExclForBinaryEqualLikeExpr(@NotNull JetUnaryExpression expression, @NotNull JsExpression baseExpression) {
090            if (getOperationToken(expression).equals(JetTokens.EXCL)) {
091                if (baseExpression instanceof JsBinaryOperation) {
092                    return isEqualLikeOperator(((JsBinaryOperation) baseExpression).getOperator());
093                }
094            }
095            return false;
096        }
097    }