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org.jetbrains.jet.codegen.binding.CodegenAnnotatingVisitor Maven / Gradle / Ivy
/*
* Copyright 2010-2014 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.jet.codegen.binding;
import com.intellij.psi.PsiElement;
import com.intellij.psi.tree.IElementType;
import com.intellij.psi.tree.TokenSet;
import com.intellij.util.containers.Stack;
import kotlin.Function1;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jetbrains.jet.codegen.AsmUtil;
import org.jetbrains.jet.codegen.JvmRuntimeTypes;
import org.jetbrains.jet.codegen.SamCodegenUtil;
import org.jetbrains.jet.codegen.SamType;
import org.jetbrains.jet.codegen.state.GenerationState;
import org.jetbrains.jet.codegen.when.SwitchCodegenUtil;
import org.jetbrains.jet.codegen.when.WhenByEnumsMapping;
import org.jetbrains.jet.lang.cfg.WhenChecker;
import org.jetbrains.jet.lang.descriptors.*;
import org.jetbrains.jet.lang.descriptors.impl.ClassDescriptorImpl;
import org.jetbrains.jet.lang.psi.*;
import org.jetbrains.jet.lang.resolve.BindingContext;
import org.jetbrains.jet.lang.resolve.BindingTrace;
import org.jetbrains.jet.lang.resolve.DescriptorToSourceUtils;
import org.jetbrains.jet.lang.resolve.DescriptorUtils;
import org.jetbrains.jet.lang.resolve.calls.callUtil.CallUtilPackage;
import org.jetbrains.jet.lang.resolve.calls.model.ExpressionValueArgument;
import org.jetbrains.jet.lang.resolve.calls.model.ResolvedCall;
import org.jetbrains.jet.lang.resolve.calls.model.ResolvedValueArgument;
import org.jetbrains.jet.lang.resolve.constants.CompileTimeConstant;
import org.jetbrains.jet.lang.resolve.constants.EnumValue;
import org.jetbrains.jet.lang.resolve.constants.NullValue;
import org.jetbrains.jet.lang.resolve.java.JvmAbi;
import org.jetbrains.jet.lang.resolve.kotlin.PackagePartClassUtils;
import org.jetbrains.jet.lang.resolve.name.Name;
import org.jetbrains.jet.lang.resolve.scopes.JetScope;
import org.jetbrains.jet.lang.resolve.source.SourcePackage;
import org.jetbrains.jet.lang.types.JetType;
import org.jetbrains.org.objectweb.asm.Type;
import java.util.*;
import static org.jetbrains.jet.codegen.binding.CodegenBinding.*;
import static org.jetbrains.jet.lang.resolve.BindingContext.*;
import static org.jetbrains.jet.lang.resolve.name.SpecialNames.safeIdentifier;
import static org.jetbrains.jet.lexer.JetTokens.*;
class CodegenAnnotatingVisitor extends JetVisitorVoid {
private static final TokenSet BINARY_OPERATIONS = TokenSet.orSet(
AUGMENTED_ASSIGNMENTS,
TokenSet.create(PLUS, MINUS, MUL, DIV, PERC, RANGE, LT, GT, LTEQ, GTEQ, IDENTIFIER));
private static class ClassDescriptorWithState {
private boolean isDelegationToSuperCall;
private final ClassDescriptor descriptor;
public ClassDescriptorWithState(ClassDescriptor descriptor) {
this.descriptor = descriptor;
}
public boolean isDelegationToSuperCall() {
return isDelegationToSuperCall;
}
public void setDelegationToSuperCall(boolean isDelegationToSuperCall) {
this.isDelegationToSuperCall = isDelegationToSuperCall;
}
public ClassDescriptor getDescriptor() {
return descriptor;
}
}
private final Map anonymousSubclassesCount = new HashMap();
private final Stack classStack = new Stack();
private final Stack nameStack = new Stack();
private final BindingTrace bindingTrace;
private final BindingContext bindingContext;
private final GenerationState.GenerateClassFilter filter;
private final JvmRuntimeTypes runtimeTypes;
public CodegenAnnotatingVisitor(@NotNull GenerationState state) {
this.bindingTrace = state.getBindingTrace();
this.bindingContext = state.getBindingContext();
this.filter = state.getGenerateDeclaredClassFilter();
this.runtimeTypes = state.getJvmRuntimeTypes();
}
@NotNull
private ClassDescriptor recordClassForFunction(
@NotNull JetElement element,
@NotNull FunctionDescriptor funDescriptor,
@NotNull Collection supertypes,
@NotNull String name
) {
String simpleName = name.substring(name.lastIndexOf('/') + 1);
ClassDescriptorImpl classDescriptor = new ClassDescriptorImpl(
funDescriptor.getContainingDeclaration(), Name.special(""), Modality.FINAL, supertypes,
SourcePackage.toSourceElement(element)
);
classDescriptor.initialize(JetScope.Empty.INSTANCE$, Collections.emptySet(), null);
bindingTrace.record(CLASS_FOR_FUNCTION, funDescriptor, classDescriptor);
return classDescriptor;
}
private String inventAnonymousClassName(JetElement declaration) {
String top = peekFromStack(nameStack);
Integer cnt = anonymousSubclassesCount.get(top);
if (cnt == null) {
cnt = 0;
}
String name = top + "$" + (cnt + 1);
ClassDescriptor descriptor = bindingContext.get(CLASS, declaration);
if (descriptor == null) {
if (declaration instanceof JetFunctionLiteralExpression ||
declaration instanceof JetNamedFunction ||
declaration instanceof JetObjectLiteralExpression ||
declaration instanceof JetCallableReferenceExpression) {
}
else {
throw new IllegalStateException(
"Class-less declaration which is not JetFunctionLiteralExpression|JetNamedFunction|JetObjectLiteralExpression|JetCallableReferenceExpression : " +
declaration.getClass().getName());
}
}
anonymousSubclassesCount.put(top, cnt + 1);
return name;
}
@Override
public void visitJetElement(@NotNull JetElement element) {
super.visitJetElement(element);
element.acceptChildren(this);
}
@Override
public void visitJetFile(@NotNull JetFile file) {
if (file.isScript()) {
// SCRIPT: should be replaced with VisitScript override
//noinspection ConstantConditions
ClassDescriptor classDescriptor = bindingContext.get(CLASS_FOR_SCRIPT, bindingContext.get(SCRIPT, file.getScript()));
pushClassDescriptor(classDescriptor);
//noinspection ConstantConditions
nameStack.push(asmTypeForScriptPsi(bindingContext, file.getScript()).getInternalName());
}
else {
nameStack.push(AsmUtil.internalNameByFqNameWithoutInnerClasses(file.getPackageFqName()));
}
file.acceptChildren(this);
nameStack.pop();
if (file.isScript()) {
popClassDescriptor();
}
}
@Override
public void visitEnumEntry(@NotNull JetEnumEntry enumEntry) {
ClassDescriptor descriptor = bindingContext.get(CLASS, enumEntry);
assert descriptor != null :
String.format("No descriptor for enum entry \n---\n%s\n---\n", JetPsiUtil.getElementTextWithContext(enumEntry));
if (enumEntry.getDeclarations().isEmpty()) {
for (JetDelegationSpecifier specifier : enumEntry.getDelegationSpecifiers()) {
specifier.accept(this);
}
}
else {
bindingTrace.record(ENUM_ENTRY_CLASS_NEED_SUBCLASS, descriptor);
super.visitEnumEntry(enumEntry);
}
}
@Override
public void visitClassObject(@NotNull JetClassObject classObject) {
ClassDescriptor classDescriptor = bindingContext.get(CLASS, classObject.getObjectDeclaration());
assert classDescriptor != null : String.format("No class found in binding context for: \n---\n%s\n---\n",
JetPsiUtil.getElementTextWithContext(classObject));
String name = peekFromStack(nameStack) + JvmAbi.CLASS_OBJECT_SUFFIX;
recordClosure(classDescriptor, name);
pushClassDescriptor(classDescriptor);
nameStack.push(name);
super.visitClassObject(classObject);
nameStack.pop();
popClassDescriptor();
}
@Override
public void visitObjectDeclaration(@NotNull JetObjectDeclaration declaration) {
if (declaration.getParent() instanceof JetObjectLiteralExpression || declaration.getParent() instanceof JetClassObject) {
super.visitObjectDeclaration(declaration);
}
else {
if (!filter.shouldProcess(declaration)) return;
ClassDescriptor classDescriptor = bindingContext.get(CLASS, declaration);
// working around a problem with shallow analysis
if (classDescriptor == null) return;
String name = getName(classDescriptor);
recordClosure(classDescriptor, name);
pushClassDescriptor(classDescriptor);
nameStack.push(name);
super.visitObjectDeclaration(declaration);
nameStack.pop();
popClassDescriptor();
}
}
@Override
public void visitClass(@NotNull JetClass klass) {
if (!filter.shouldProcess(klass)) return;
ClassDescriptor classDescriptor = bindingContext.get(CLASS, klass);
// working around a problem with shallow analysis
if (classDescriptor == null) return;
String name = getName(classDescriptor);
recordClosure(classDescriptor, name);
pushClassDescriptor(classDescriptor);
nameStack.push(name);
super.visitClass(klass);
nameStack.pop();
popClassDescriptor();
}
private String getName(ClassDescriptor classDescriptor) {
String base = peekFromStack(nameStack);
Name descriptorName = safeIdentifier(classDescriptor.getName());
return DescriptorUtils.isTopLevelDeclaration(classDescriptor) ? base.isEmpty() ? descriptorName
.asString() : base + '/' + descriptorName : base + '$' + descriptorName;
}
@Override
public void visitObjectLiteralExpression(@NotNull JetObjectLiteralExpression expression) {
ClassDescriptor classDescriptor = bindingContext.get(CLASS, expression.getObjectDeclaration());
if (classDescriptor == null) {
// working around a problem with shallow analysis
super.visitObjectLiteralExpression(expression);
return;
}
String name = inventAnonymousClassName(expression.getObjectDeclaration());
recordClosure(classDescriptor, name);
pushClassDescriptor(classDescriptor);
nameStack.push(CodegenBinding.getAsmType(bindingContext, classDescriptor).getInternalName());
super.visitObjectLiteralExpression(expression);
nameStack.pop();
popClassDescriptor();
}
@Override
public void visitFunctionLiteralExpression(@NotNull JetFunctionLiteralExpression expression) {
JetFunctionLiteral functionLiteral = expression.getFunctionLiteral();
FunctionDescriptor functionDescriptor =
(FunctionDescriptor) bindingContext.get(DECLARATION_TO_DESCRIPTOR, functionLiteral);
// working around a problem with shallow analysis
if (functionDescriptor == null) return;
String name = inventAnonymousClassName(expression);
Collection supertypes = runtimeTypes.getSupertypesForClosure(functionDescriptor);
ClassDescriptor classDescriptor = recordClassForFunction(functionLiteral, functionDescriptor, supertypes, name);
recordClosure(classDescriptor, name);
pushClassDescriptor(classDescriptor);
nameStack.push(name);
super.visitFunctionLiteralExpression(expression);
nameStack.pop();
popClassDescriptor();
}
private void pushClassDescriptor(ClassDescriptor classDescriptor) {
classStack.push(new ClassDescriptorWithState(classDescriptor));
}
private void popClassDescriptor() {
classStack.pop();
}
private ClassDescriptor getOuterClassDescriptor() {
ListIterator iterator = classStack.listIterator(classStack.size());
while(iterator.hasPrevious()) {
ClassDescriptorWithState previous = iterator.previous();
if (!previous.isDelegationToSuperCall()) {//find last not delegated to super call
return previous.getDescriptor();
}
}
return null;
}
@Override
public void visitDelegationToSuperCallSpecifier(@NotNull JetDelegatorToSuperCall call) {
ClassDescriptorWithState state = peekFromStack(classStack);
// working around a problem with shallow analysis
if (state == null) return;
state.setDelegationToSuperCall(true);
super.visitDelegationToSuperCallSpecifier(call);
state.setDelegationToSuperCall(false);
}
@Override
public void visitCallableReferenceExpression(@NotNull JetCallableReferenceExpression expression) {
FunctionDescriptor functionDescriptor = bindingContext.get(FUNCTION, expression);
// working around a problem with shallow analysis
if (functionDescriptor == null) return;
ResolvedCall referencedFunction = CallUtilPackage.getResolvedCall(expression.getCallableReference(), bindingContext);
if (referencedFunction == null) return;
Collection supertypes =
runtimeTypes.getSupertypesForFunctionReference((FunctionDescriptor) referencedFunction.getResultingDescriptor());
String name = inventAnonymousClassName(expression);
ClassDescriptor classDescriptor = recordClassForFunction(expression, functionDescriptor, supertypes, name);
recordClosure(classDescriptor, name);
pushClassDescriptor(classDescriptor);
nameStack.push(name);
super.visitCallableReferenceExpression(expression);
nameStack.pop();
popClassDescriptor();
}
private void recordClosure(@NotNull ClassDescriptor classDescriptor, @NotNull String name) {
CodegenBinding.recordClosure(bindingTrace, classDescriptor, getOuterClassDescriptor(), Type.getObjectType(name));
}
@Override
public void visitProperty(@NotNull JetProperty property) {
DeclarationDescriptor propertyDescriptor = bindingContext.get(DECLARATION_TO_DESCRIPTOR, property);
// working around a problem with shallow analysis
if (propertyDescriptor == null) return;
String nameForClassOrPackageMember = getNameForClassOrPackageMember(propertyDescriptor);
if (nameForClassOrPackageMember != null) {
nameStack.push(nameForClassOrPackageMember);
}
else {
nameStack.push(peekFromStack(nameStack) + '$' + safeIdentifier(property.getNameAsSafeName()).asString());
}
super.visitProperty(property);
nameStack.pop();
}
@Override
public void visitNamedFunction(@NotNull JetNamedFunction function) {
FunctionDescriptor functionDescriptor = (FunctionDescriptor) bindingContext.get(DECLARATION_TO_DESCRIPTOR, function);
// working around a problem with shallow analysis
if (functionDescriptor == null) return;
String nameForClassOrPackageMember = getNameForClassOrPackageMember(functionDescriptor);
if (nameForClassOrPackageMember != null) {
nameStack.push(nameForClassOrPackageMember);
super.visitNamedFunction(function);
nameStack.pop();
}
else {
String name = inventAnonymousClassName(function);
Collection supertypes = runtimeTypes.getSupertypesForClosure(functionDescriptor);
ClassDescriptor classDescriptor = recordClassForFunction(function, functionDescriptor, supertypes, name);
recordClosure(classDescriptor, name);
pushClassDescriptor(classDescriptor);
nameStack.push(name);
super.visitNamedFunction(function);
nameStack.pop();
popClassDescriptor();
}
}
@Nullable
private String getNameForClassOrPackageMember(@NotNull DeclarationDescriptor descriptor) {
DeclarationDescriptor containingDeclaration = descriptor.getContainingDeclaration();
String peek = peekFromStack(nameStack);
String name = safeIdentifier(descriptor.getName()).asString();
if (containingDeclaration instanceof ClassDescriptor) {
return peek + '$' + name;
}
else if (containingDeclaration instanceof PackageFragmentDescriptor) {
JetFile containingFile = DescriptorToSourceUtils.getContainingFile(descriptor);
assert containingFile != null : "File not found for " + descriptor;
return PackagePartClassUtils.getPackagePartInternalName(containingFile) + '$' + name;
}
return null;
}
@Override
public void visitCallExpression(@NotNull JetCallExpression expression) {
super.visitCallExpression(expression);
ResolvedCall call = CallUtilPackage.getResolvedCall(expression, bindingContext);
if (call == null) return;
CallableDescriptor descriptor = call.getResultingDescriptor();
if (!(descriptor instanceof FunctionDescriptor)) return;
FunctionDescriptor original = SamCodegenUtil.getOriginalIfSamAdapter((FunctionDescriptor) descriptor);
if (original == null) return;
List valueArguments = call.getValueArgumentsByIndex();
if (valueArguments == null) {
throw new IllegalStateException("Failed to arrange value arguments by index: " + descriptor);
}
for (ValueParameterDescriptor valueParameter : original.getValueParameters()) {
SamType samType = SamType.create(valueParameter.getType());
if (samType == null) continue;
ResolvedValueArgument resolvedValueArgument = valueArguments.get(valueParameter.getIndex());
assert resolvedValueArgument instanceof ExpressionValueArgument : resolvedValueArgument;
ValueArgument valueArgument = ((ExpressionValueArgument) resolvedValueArgument).getValueArgument();
assert valueArgument != null;
JetExpression argumentExpression = valueArgument.getArgumentExpression();
assert argumentExpression != null : valueArgument.asElement().getText();
bindingTrace.record(CodegenBinding.SAM_VALUE, argumentExpression, samType);
}
}
@Override
public void visitBinaryExpression(@NotNull JetBinaryExpression expression) {
super.visitBinaryExpression(expression);
DeclarationDescriptor operationDescriptor = bindingContext.get(BindingContext.REFERENCE_TARGET, expression.getOperationReference());
if (!(operationDescriptor instanceof FunctionDescriptor)) return;
FunctionDescriptor original = SamCodegenUtil.getOriginalIfSamAdapter((FunctionDescriptor) operationDescriptor);
if (original == null) return;
SamType samType = SamType.create(original.getValueParameters().get(0).getType());
if (samType == null) return;
IElementType token = expression.getOperationToken();
if (BINARY_OPERATIONS.contains(token)) {
bindingTrace.record(CodegenBinding.SAM_VALUE, expression.getRight(), samType);
}
else if (token == IN_KEYWORD || token == NOT_IN) {
bindingTrace.record(CodegenBinding.SAM_VALUE, expression.getLeft(), samType);
}
}
@Override
public void visitArrayAccessExpression(@NotNull JetArrayAccessExpression expression) {
super.visitArrayAccessExpression(expression);
DeclarationDescriptor operationDescriptor = bindingContext.get(BindingContext.REFERENCE_TARGET, expression);
if (!(operationDescriptor instanceof FunctionDescriptor)) return;
boolean isSetter = operationDescriptor.getName().asString().equals("set");
FunctionDescriptor original = SamCodegenUtil.getOriginalIfSamAdapter((FunctionDescriptor) operationDescriptor);
if (original == null) return;
List indexExpressions = expression.getIndexExpressions();
List parameters = original.getValueParameters();
for (ValueParameterDescriptor valueParameter : parameters) {
SamType samType = SamType.create(valueParameter.getType());
if (samType == null) continue;
if (isSetter && valueParameter.getIndex() == parameters.size() - 1) {
PsiElement parent = expression.getParent();
if (parent instanceof JetBinaryExpression && ((JetBinaryExpression) parent).getOperationToken() == EQ) {
JetExpression right = ((JetBinaryExpression) parent).getRight();
bindingTrace.record(CodegenBinding.SAM_VALUE, right, samType);
}
}
else {
JetExpression indexExpression = indexExpressions.get(valueParameter.getIndex());
bindingTrace.record(CodegenBinding.SAM_VALUE, indexExpression, samType);
}
}
}
@Override
public void visitWhenExpression(@NotNull JetWhenExpression expression) {
super.visitWhenExpression(expression);
if (!isWhenWithEnums(expression)) return;
String currentClassName = getCurrentTopLevelClassOrPackagePartInternalName(expression.getContainingJetFile());
if (bindingContext.get(MAPPINGS_FOR_WHENS_BY_ENUM_IN_CLASS_FILE, currentClassName) == null) {
bindingTrace.record(MAPPINGS_FOR_WHENS_BY_ENUM_IN_CLASS_FILE, currentClassName, new ArrayList(1));
}
List mappings = bindingContext.get(MAPPINGS_FOR_WHENS_BY_ENUM_IN_CLASS_FILE, currentClassName);
assert mappings != null : "guaranteed by contract";
int fieldNumber = mappings.size();
JetType type = bindingContext.get(BindingContext.EXPRESSION_TYPE, expression.getSubjectExpression());
assert type != null : "should not be null in a valid when by enums";
ClassDescriptor classDescriptor = (ClassDescriptor) type.getConstructor().getDeclarationDescriptor();
assert classDescriptor != null : "because it's enum";
WhenByEnumsMapping mapping = new WhenByEnumsMapping(classDescriptor, currentClassName, fieldNumber);
for (CompileTimeConstant constant : SwitchCodegenUtil.getAllConstants(expression, bindingContext)) {
if (constant instanceof NullValue) continue;
assert constant instanceof EnumValue : "expression in when should be EnumValue";
mapping.putFirstTime((EnumValue) constant, mapping.size() + 1);
}
mappings.add(mapping);
bindingTrace.record(MAPPING_FOR_WHEN_BY_ENUM, expression, mapping);
}
private boolean isWhenWithEnums(@NotNull JetWhenExpression expression) {
return WhenChecker.isWhenByEnum(expression, bindingContext) &&
SwitchCodegenUtil.checkAllItemsAreConstantsSatisfying(
expression,
bindingContext,
new Function1() {
@Override
public Boolean invoke(@NotNull CompileTimeConstant constant) {
return constant instanceof EnumValue || constant instanceof NullValue;
}
}
);
}
@NotNull
private String getCurrentTopLevelClassOrPackagePartInternalName(@NotNull JetFile file) {
ListIterator iterator = classStack.listIterator(classStack.size());
while (iterator.hasPrevious()) {
ClassDescriptor previous = iterator.previous().getDescriptor();
if (DescriptorUtils.isTopLevelOrInnerClass(previous)) {
return CodegenBinding.getAsmType(bindingContext, previous).getInternalName();
}
}
return PackagePartClassUtils.getPackagePartInternalName(file);
}
private static T peekFromStack(@NotNull Stack stack) {
return stack.empty() ? null : stack.peek();
}
}
