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org.jetbrains.kotlin.js.translate.reference.CallExpressionTranslator Maven / Gradle / Ivy
/*
* Copyright 2010-2017 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 org.jetbrains.kotlin.js.translate.reference;
import com.google.gwt.dev.js.ThrowExceptionOnErrorReporter;
import com.google.gwt.dev.js.rhino.CodePosition;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.kotlin.config.CommonConfigurationKeys;
import org.jetbrains.kotlin.descriptors.*;
import org.jetbrains.kotlin.incremental.components.NoLookupLocation;
import org.jetbrains.kotlin.js.backend.ast.*;
import org.jetbrains.kotlin.js.inline.util.CollectUtilsKt;
import org.jetbrains.kotlin.js.inline.util.RewriteUtilsKt;
import org.jetbrains.kotlin.js.parser.ParserUtilsKt;
import org.jetbrains.kotlin.js.resolve.BindingContextSlicesJsKt;
import org.jetbrains.kotlin.js.resolve.diagnostics.JsCallChecker;
import org.jetbrains.kotlin.js.translate.callTranslator.CallTranslator;
import org.jetbrains.kotlin.js.translate.context.TranslationContext;
import org.jetbrains.kotlin.js.translate.utils.PsiUtils;
import org.jetbrains.kotlin.name.Name;
import org.jetbrains.kotlin.psi.KtCallExpression;
import org.jetbrains.kotlin.psi.KtExpression;
import org.jetbrains.kotlin.psi.ValueArgument;
import org.jetbrains.kotlin.resolve.FunctionImportedFromObject;
import org.jetbrains.kotlin.resolve.calls.callUtil.CallUtilKt;
import org.jetbrains.kotlin.resolve.calls.model.ResolvedCall;
import org.jetbrains.kotlin.resolve.inline.InlineUtil;
import org.jetbrains.kotlin.resolve.scopes.LexicalScope;
import java.io.IOException;
import java.util.*;
import static org.jetbrains.kotlin.js.resolve.diagnostics.JsCallChecker.isJsCall;
import static org.jetbrains.kotlin.resolve.constants.evaluate.ConstantExpressionEvaluator.getConstant;
public final class CallExpressionTranslator extends AbstractCallExpressionTranslator {
@NotNull
public static JsNode translate(
@NotNull KtCallExpression expression,
@Nullable JsExpression receiver,
@NotNull TranslationContext context
) {
ResolvedCall resolvedCall =
CallUtilKt.getFunctionResolvedCallWithAssert(expression, context.bindingContext());
if (isJsCall(resolvedCall)) {
return (new CallExpressionTranslator(expression, receiver, context)).translateJsCode();
}
return (new CallExpressionTranslator(expression, receiver, context)).translate();
}
public static boolean shouldBeInlined(@NotNull CallableDescriptor descriptor, @NotNull TranslationContext context) {
if (context.getConfig().getConfiguration().getBoolean(CommonConfigurationKeys.DISABLE_INLINE)) return false;
return shouldBeInlined(descriptor);
}
public static boolean shouldBeInlined(@NotNull CallableDescriptor descriptor) {
if (descriptor instanceof SimpleFunctionDescriptor ||
descriptor instanceof PropertyAccessorDescriptor ||
descriptor instanceof FunctionImportedFromObject
) {
return InlineUtil.isInline(descriptor);
}
if (descriptor instanceof ValueParameterDescriptor) {
return InlineUtil.isInline(descriptor.getContainingDeclaration()) &&
InlineUtil.isInlineParameter((ParameterDescriptor) descriptor) &&
!((ValueParameterDescriptor) descriptor).isCrossinline();
}
return false;
}
private CallExpressionTranslator(
@NotNull KtCallExpression expression,
@Nullable JsExpression receiver,
@NotNull TranslationContext context
) {
super(expression, receiver, context);
}
@NotNull
private JsExpression translate() {
return CallTranslator.translate(context(), resolvedCall, receiver);
}
@NotNull
private JsNode translateJsCode() {
List arguments = expression.getValueArguments();
KtExpression argumentExpression = arguments.get(0).getArgumentExpression();
assert argumentExpression != null;
List statements = parseJsCode(argumentExpression);
int size = statements.size();
JsNode node;
if (size == 0) {
node = new JsNullLiteral();
}
else if (size > 1) {
node = new JsBlock(statements);
}
else {
JsStatement resultStatement = statements.get(0);
if (resultStatement instanceof JsExpressionStatement) {
node = ((JsExpressionStatement) resultStatement).getExpression();
}
else {
node = resultStatement;
}
}
LexicalScope lexicalScope = context().bindingContext().get(BindingContextSlicesJsKt.LEXICAL_SCOPE_FOR_JS, resolvedCall);
Map replacements = new HashMap<>();
if (lexicalScope != null) {
Set references = CollectUtilsKt.collectUsedNames(node);
references.removeAll(CollectUtilsKt.collectDefinedNames(node));
for (JsName name : references) {
VariableDescriptor variable = getVariableByName(lexicalScope, Name.identifier(name.getIdent()));
if (variable != null) {
replacements.put(name, ReferenceTranslator.translateAsValueReference(variable, context()));
}
}
if (!replacements.isEmpty()) {
node = RewriteUtilsKt.replaceNames(node, replacements);
}
}
return node;
}
@Nullable
private static VariableDescriptor getVariableByName(@NotNull LexicalScope scope, @NotNull Name name) {
while (true) {
Collection variables = scope.getContributedVariables(name, NoLookupLocation.FROM_BACKEND);
if (!variables.isEmpty()) {
return variables.size() == 1 ? variables.iterator().next() : null;
}
if (!(scope.getParent() instanceof LexicalScope)) break;
LexicalScope parentScope = (LexicalScope) scope.getParent();
if (scope.getOwnerDescriptor() != parentScope.getOwnerDescriptor()) break;
scope = parentScope;
}
return null;
}
@NotNull
private List parseJsCode(@NotNull KtExpression jsCodeExpression) {
String jsCode = JsCallChecker.extractStringValue(getConstant(jsCodeExpression, context().bindingContext()));
assert jsCode != null : "jsCode must be compile time string " + jsCodeExpression.getText();
// Parser can change local or global scope.
// In case of js we want to keep new local names,
// but no new global ones.
JsScope currentScope = context().scope();
assert currentScope instanceof JsFunctionScope : "Usage of js outside of function is unexpected";
JsScope temporaryRootScope = new JsRootScope(new JsProgram());
JsScope scope = new DelegatingJsFunctionScopeWithTemporaryParent((JsFunctionScope) currentScope, temporaryRootScope);
JsLocation location;
try {
location = PsiUtils.extractLocationFromPsi(jsCodeExpression, context().getSourceFilePathResolver());
}
catch (IOException e) {
location = new JsLocation(jsCodeExpression.getContainingKtFile().getName(), 0, 0);
}
List statements = ParserUtilsKt.parseExpressionOrStatement(
jsCode, ThrowExceptionOnErrorReporter.INSTANCE, scope,
new CodePosition(location.getStartLine(), location.getStartChar()), location.getFile());
return statements != null ? statements : Collections.emptyList();
}
}