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.facade;
018    
019    import org.jetbrains.kotlin.js.backend.ast.JsProgram;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.annotations.Nullable;
022    import org.jetbrains.kotlin.descriptors.ModuleDescriptor;
023    import org.jetbrains.kotlin.js.analyze.TopDownAnalyzerFacadeForJS;
024    import org.jetbrains.kotlin.js.analyzer.JsAnalysisResult;
025    import org.jetbrains.kotlin.js.config.JsConfig;
026    import org.jetbrains.kotlin.js.coroutine.CoroutineTransformer;
027    import org.jetbrains.kotlin.js.facade.exceptions.TranslationException;
028    import org.jetbrains.kotlin.js.inline.JsInliner;
029    import org.jetbrains.kotlin.js.translate.context.StaticContext;
030    import org.jetbrains.kotlin.js.inline.clean.RemoveUnusedImportsKt;
031    import org.jetbrains.kotlin.js.inline.clean.ResolveTemporaryNamesKt;
032    import org.jetbrains.kotlin.js.translate.context.TranslationContext;
033    import org.jetbrains.kotlin.js.translate.general.Translation;
034    import org.jetbrains.kotlin.progress.ProgressIndicatorAndCompilationCanceledStatus;
035    import org.jetbrains.kotlin.psi.KtFile;
036    import org.jetbrains.kotlin.resolve.BindingTrace;
037    import org.jetbrains.kotlin.resolve.diagnostics.Diagnostics;
038    
039    import java.util.ArrayList;
040    import java.util.List;
041    
042    import static org.jetbrains.kotlin.diagnostics.DiagnosticUtils.hasError;
043    import static org.jetbrains.kotlin.js.translate.utils.ExpandIsCallsKt.expandIsCalls;
044    
045    /**
046     * An entry point of translator.
047     */
048    public final class K2JSTranslator {
049    
050        @NotNull
051        private final JsConfig config;
052    
053        public K2JSTranslator(@NotNull JsConfig config) {
054            this.config = config;
055        }
056    
057        @NotNull
058        public TranslationResult translate(
059                @NotNull List<KtFile> files,
060                @NotNull MainCallParameters mainCallParameters
061        ) throws TranslationException {
062            return translate(files, mainCallParameters, null);
063        }
064    
065        @NotNull
066        public TranslationResult translate(
067                @NotNull List<KtFile> files,
068                @NotNull MainCallParameters mainCallParameters,
069                @Nullable JsAnalysisResult analysisResult
070        ) throws TranslationException {
071            if (analysisResult == null) {
072                analysisResult = TopDownAnalyzerFacadeForJS.analyzeFiles(files, config);
073                ProgressIndicatorAndCompilationCanceledStatus.checkCanceled();
074            }
075    
076            BindingTrace bindingTrace = analysisResult.getBindingTrace();
077            TopDownAnalyzerFacadeForJS.checkForErrors(JsConfig.withJsLibAdded(files, config), bindingTrace.getBindingContext());
078            ModuleDescriptor moduleDescriptor = analysisResult.getModuleDescriptor();
079            Diagnostics diagnostics = bindingTrace.getBindingContext().getDiagnostics();
080    
081            TranslationContext context = Translation.generateAst(bindingTrace, files, mainCallParameters, moduleDescriptor, config);
082            ProgressIndicatorAndCompilationCanceledStatus.checkCanceled();
083            if (hasError(diagnostics)) return new TranslationResult.Fail(diagnostics);
084    
085            JsProgram program = JsInliner.process(context);
086            ResolveTemporaryNamesKt.resolveTemporaryNames(program);
087            ProgressIndicatorAndCompilationCanceledStatus.checkCanceled();
088            if (hasError(diagnostics)) return new TranslationResult.Fail(diagnostics);
089    
090            CoroutineTransformer coroutineTransformer = new CoroutineTransformer(program);
091            coroutineTransformer.accept(program);
092            RemoveUnusedImportsKt.removeUnusedImports(program);
093            ProgressIndicatorAndCompilationCanceledStatus.checkCanceled();
094            if (hasError(diagnostics)) return new TranslationResult.Fail(diagnostics);
095    
096            expandIsCalls(program, context);
097            ProgressIndicatorAndCompilationCanceledStatus.checkCanceled();
098    
099            List<String> importedModules = new ArrayList<String>();
100            for (StaticContext.ImportedModule module : context.getImportedModules()) {
101                importedModules.add(module.getExternalName());
102            }
103            return new TranslationResult.Success(config, files, program, diagnostics, importedModules, moduleDescriptor,
104                                                 bindingTrace.getBindingContext());
105        }
106    }