org.eclipse.jdt.internal.compiler.parser.RecoveredUnit Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of ecj Show documentation
This is Eclipse JDT Core Batch Compiler used by Scout SDK
The newest version!
/*******************************************************************************
 * Copyright (c) 2000, 2015 IBM Corporation and others.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.jdt.internal.compiler.parser;

/**
 * Internal field structure for parsing recovery
 */
import java.util.HashSet;
import java.util.Set;

import org.eclipse.jdt.internal.compiler.ast.AbstractMethodDeclaration;
import org.eclipse.jdt.internal.compiler.ast.ASTNode;
import org.eclipse.jdt.internal.compiler.ast.Block;
import org.eclipse.jdt.internal.compiler.ast.CompilationUnitDeclaration;
import org.eclipse.jdt.internal.compiler.ast.FieldDeclaration;
import org.eclipse.jdt.internal.compiler.ast.ImportReference;
import org.eclipse.jdt.internal.compiler.ast.Initializer;
import org.eclipse.jdt.internal.compiler.ast.TypeDeclaration;

public class RecoveredUnit extends RecoveredElement {

	public CompilationUnitDeclaration unitDeclaration;

	public RecoveredImport[] imports;
	public int importCount;
	public RecoveredType[] types;
	public int typeCount;

	int pendingModifiers;
	int pendingModifersSourceStart = -1;
	RecoveredAnnotation[] pendingAnnotations;
	int pendingAnnotationCount;

public RecoveredUnit(CompilationUnitDeclaration unitDeclaration, int bracketBalance, Parser parser){
	super(null, bracketBalance, parser);
	this.unitDeclaration = unitDeclaration;
}
public RecoveredElement addAnnotationName(int identifierPtr, int identifierLengthPtr, int annotationStart, int bracketBalanceValue) {
	if (this.pendingAnnotations == null) {
		this.pendingAnnotations = new RecoveredAnnotation[5];
		this.pendingAnnotationCount = 0;
	} else {
		if (this.pendingAnnotationCount == this.pendingAnnotations.length) {
			System.arraycopy(
				this.pendingAnnotations,
				0,
				(this.pendingAnnotations = new RecoveredAnnotation[2 * this.pendingAnnotationCount]),
				0,
				this.pendingAnnotationCount);
		}
	}

	RecoveredAnnotation element = new RecoveredAnnotation(identifierPtr, identifierLengthPtr, annotationStart, this, bracketBalanceValue);

	this.pendingAnnotations[this.pendingAnnotationCount++] = element;

	return element;
}
public void addModifier(int flag, int modifiersSourceStart) {
	this.pendingModifiers |= flag;

	if (this.pendingModifersSourceStart < 0) {
		this.pendingModifersSourceStart = modifiersSourceStart;
	}
}
/*
 *	Record a method declaration: should be attached to last type
 */
public RecoveredElement add(AbstractMethodDeclaration methodDeclaration, int bracketBalanceValue) {

	/* attach it to last type - if any */
	if (this.typeCount > 0){
		RecoveredType type = this.types[this.typeCount -1];
		int start = type.bodyEnd;
		int end = type.typeDeclaration.bodyEnd;
		type.bodyEnd = 0; // reset position
		type.typeDeclaration.declarationSourceEnd = 0; // reset position
		type.typeDeclaration.bodyEnd = 0;

		int kind = TypeDeclaration.kind(type.typeDeclaration.modifiers);
		if(start > 0 &&
				start < end &&
				kind != TypeDeclaration.INTERFACE_DECL &&
				kind != TypeDeclaration.ANNOTATION_TYPE_DECL) {
			// the } of the last type can be considered as the end of an initializer
			Block block = new Block(0);
			block.sourceStart = block.sourceEnd = end;
			Initializer initializer = new Initializer(block, 0);
			initializer.bodyStart = end;
			initializer.bodyEnd = end;
			initializer.declarationSourceStart = end;
			initializer.declarationSourceEnd = end;
			initializer.sourceStart = end;
			initializer.sourceEnd = end;
			type.add(initializer, bracketBalanceValue);
		}

		resetPendingModifiers();

		return type.add(methodDeclaration, bracketBalanceValue);
	}
	return this; // ignore
}
/*
 *	Record a field declaration: should be attached to last type
 */
public RecoveredElement add(FieldDeclaration fieldDeclaration, int bracketBalanceValue) {

	/* attach it to last type - if any */
	if (this.typeCount > 0){
		RecoveredType type = this.types[this.typeCount -1];
		type.bodyEnd = 0; // reset position
		type.typeDeclaration.declarationSourceEnd = 0; // reset position
		type.typeDeclaration.bodyEnd = 0;

		resetPendingModifiers();

		return type.add(fieldDeclaration, bracketBalanceValue);
	}
	return this; // ignore
}
public RecoveredElement add(ImportReference importReference, int bracketBalanceValue) {
	resetPendingModifiers();

	if (this.imports == null) {
		this.imports = new RecoveredImport[5];
		this.importCount = 0;
	} else {
		if (this.importCount == this.imports.length) {
			System.arraycopy(
				this.imports,
				0,
				(this.imports = new RecoveredImport[2 * this.importCount]),
				0,
				this.importCount);
		}
	}
	RecoveredImport element = new RecoveredImport(importReference, this, bracketBalanceValue);
	this.imports[this.importCount++] = element;

	/* if import not finished, then import becomes current */
	if (importReference.declarationSourceEnd == 0) return element;
	return this;
}
public RecoveredElement add(TypeDeclaration typeDeclaration, int bracketBalanceValue) {

	if ((typeDeclaration.bits & ASTNode.IsAnonymousType) != 0){
		if (this.typeCount > 0) {
			// add it to the last type
			RecoveredType lastType = this.types[this.typeCount-1];
			lastType.bodyEnd = 0; // reopen type
			lastType.typeDeclaration.bodyEnd = 0; // reopen type
			lastType.typeDeclaration.declarationSourceEnd = 0; // reopen type
			lastType.bracketBalance++; // expect one closing brace

			resetPendingModifiers();

			return lastType.add(typeDeclaration, bracketBalanceValue);
		}
	}
	if (this.types == null) {
		this.types = new RecoveredType[5];
		this.typeCount = 0;
	} else {
		if (this.typeCount == this.types.length) {
			System.arraycopy(
				this.types,
				0,
				(this.types = new RecoveredType[2 * this.typeCount]),
				0,
				this.typeCount);
		}
	}
	RecoveredType element = new RecoveredType(typeDeclaration, this, bracketBalanceValue);
	this.types[this.typeCount++] = element;

	if(this.pendingAnnotationCount > 0) {
		element.attach(
				this.pendingAnnotations,
				this.pendingAnnotationCount,
				this.pendingModifiers,
				this.pendingModifersSourceStart);
	}
	resetPendingModifiers();

	/* if type not finished, then type becomes current */
	if (typeDeclaration.declarationSourceEnd == 0) return element;
	return this;
}
/*
 * Answer the associated parsed structure
 */
public ASTNode parseTree(){
	return this.unitDeclaration;
}
public void resetPendingModifiers() {
	this.pendingAnnotations = null;
	this.pendingAnnotationCount = 0;
	this.pendingModifiers = 0;
	this.pendingModifersSourceStart = -1;
}
/*
 * Answer the very source end of the corresponding parse node
 */
public int sourceEnd(){
	return this.unitDeclaration.sourceEnd;
}
public String toString(int tab) {
	StringBuffer result = new StringBuffer(tabString(tab));
	result.append("Recovered unit: [\n"); //$NON-NLS-1$
	this.unitDeclaration.print(tab + 1, result);
	result.append(tabString(tab + 1));
	result.append("]"); //$NON-NLS-1$
	if (this.imports != null) {
		for (int i = 0; i < this.importCount; i++) {
			result.append("\n"); //$NON-NLS-1$
			result.append(this.imports[i].toString(tab + 1));
		}
	}
	if (this.types != null) {
		for (int i = 0; i < this.typeCount; i++) {
			result.append("\n"); //$NON-NLS-1$
			result.append(this.types[i].toString(tab + 1));
		}
	}
	return result.toString();
}
public CompilationUnitDeclaration updatedCompilationUnitDeclaration(){

	/* update imports */
	if (this.importCount > 0){
		ImportReference[] importRefences = new ImportReference[this.importCount];
		for (int i = 0; i < this.importCount; i++){
			importRefences[i] = this.imports[i].updatedImportReference();
		}
		this.unitDeclaration.imports = importRefences;
	}
	/* update types */
	if (this.typeCount > 0){
		int existingCount = this.unitDeclaration.types == null ? 0 : this.unitDeclaration.types.length;
		TypeDeclaration[] typeDeclarations = new TypeDeclaration[existingCount + this.typeCount];
		if (existingCount > 0){
			System.arraycopy(this.unitDeclaration.types, 0, typeDeclarations, 0, existingCount);
		}
		// may need to update the declarationSourceEnd of the last type
		if (this.types[this.typeCount - 1].typeDeclaration.declarationSourceEnd == 0){
			this.types[this.typeCount - 1].typeDeclaration.declarationSourceEnd = this.unitDeclaration.sourceEnd;
			this.types[this.typeCount - 1].typeDeclaration.bodyEnd = this.unitDeclaration.sourceEnd;
		}
		
		Set knownTypes = new HashSet<>();
		int actualCount = existingCount;
		for (int i = 0; i < this.typeCount; i++){
			TypeDeclaration typeDecl = this.types[i].updatedTypeDeclaration(0, knownTypes);
			// filter out local types (12454)
			if (typeDecl != null && (typeDecl.bits & ASTNode.IsLocalType) == 0){
				typeDeclarations[actualCount++] = typeDecl;
			}
		}
		if (actualCount != this.typeCount){
			System.arraycopy(
				typeDeclarations,
				0,
				typeDeclarations = new TypeDeclaration[existingCount+actualCount],
				0,
				existingCount+actualCount);
		}
		this.unitDeclaration.types = typeDeclarations;
	}
	return this.unitDeclaration;
}
public void updateParseTree(){
	updatedCompilationUnitDeclaration();
}
/*
 * Update the sourceEnd of the corresponding parse node
 */
public void updateSourceEndIfNecessary(int bodyStart, int bodyEnd){
	if (this.unitDeclaration.sourceEnd == 0)
		this.unitDeclaration.sourceEnd = bodyEnd;
}
}