+++ /dev/null
-/*******************************************************************************
- * Copyright (c) 2000, 2004 IBM Corporation and others.
- * All rights reserved. This program and the accompanying materials
- * are made available under the terms of the Common Public License v1.0
- * which accompanies this distribution, and is available at
- * http://www.eclipse.org/legal/cpl-v10.html
- *
- * Contributors:
- * IBM Corporation - initial API and implementation
- *******************************************************************************/
-package org.eclipse.jdt.internal.compiler.ast;
-
-import org.eclipse.jdt.internal.compiler.ASTVisitor;
-import org.eclipse.jdt.internal.compiler.codegen.*;
-import org.eclipse.jdt.internal.compiler.flow.*;
-import org.eclipse.jdt.internal.compiler.lookup.*;
-
-public class Block extends Statement {
-
- public Statement[] statements;
- public int explicitDeclarations;
- // the number of explicit declaration , used to create scope
- public BlockScope scope;
-
- public Block(int explicitDeclarations) {
- this.explicitDeclarations = explicitDeclarations;
- }
-
- public FlowInfo analyseCode(
- BlockScope currentScope,
- FlowContext flowContext,
- FlowInfo flowInfo) {
-
- // empty block
- if (statements == null) return flowInfo;
- boolean didAlreadyComplain = false;
- for (int i = 0, max = statements.length; i < max; i++) {
- Statement stat = statements[i];
- if (!stat.complainIfUnreachable(flowInfo, scope, didAlreadyComplain)) {
- flowInfo = stat.analyseCode(scope, flowContext, flowInfo);
- } else {
- didAlreadyComplain = true;
- }
- }
- return flowInfo;
- }
- /**
- * Code generation for a block
- */
- public void generateCode(BlockScope currentScope, CodeStream codeStream) {
-
- if ((bits & IsReachableMASK) == 0) {
- return;
- }
- int pc = codeStream.position;
- if (statements != null) {
- for (int i = 0, max = statements.length; i < max; i++) {
- statements[i].generateCode(scope, codeStream);
- }
- } // for local variable debug attributes
- if (scope != currentScope) { // was really associated with its own scope
- codeStream.exitUserScope(scope);
- }
- codeStream.recordPositionsFrom(pc, this.sourceStart);
- }
-
- public boolean isEmptyBlock() {
-
- return statements == null;
- }
-
- public StringBuffer printBody(int indent, StringBuffer output) {
-
- if (this.statements == null) return output;
- for (int i = 0; i < statements.length; i++) {
- statements[i].printStatement(indent + 1, output);
- output.append('\n');
- }
- return output;
- }
-
- public StringBuffer printStatement(int indent, StringBuffer output) {
-
- printIndent(indent, output);
- output.append("{\n"); //$NON-NLS-1$
- printBody(indent, output);
- return printIndent(indent, output).append('}');
- }
-
- public void resolve(BlockScope upperScope) {
-
- if ((this.bits & UndocumentedEmptyBlockMASK) != 0) {
- upperScope.problemReporter().undocumentedEmptyBlock(this.sourceStart, this.sourceEnd);
- }
- if (statements != null) {
- scope =
- explicitDeclarations == 0
- ? upperScope
- : new BlockScope(upperScope, explicitDeclarations);
- for (int i = 0, length = statements.length; i < length; i++) {
- statements[i].resolve(scope);
- }
- }
- }
-
- public void resolveUsing(BlockScope givenScope) {
-
- if ((this.bits & UndocumentedEmptyBlockMASK) != 0) {
- givenScope.problemReporter().undocumentedEmptyBlock(this.sourceStart, this.sourceEnd);
- }
- // this optimized resolve(...) is sent only on none empty blocks
- scope = givenScope;
- if (statements != null) {
- for (int i = 0, length = statements.length; i < length; i++) {
- statements[i].resolve(scope);
- }
- }
- }
-
- public void traverse(
- ASTVisitor visitor,
- BlockScope blockScope) {
-
- if (visitor.visit(this, blockScope)) {
- if (statements != null) {
- for (int i = 0, length = statements.length; i < length; i++)
- statements[i].traverse(visitor, scope);
- }
- }
- visitor.endVisit(this, blockScope);
- }
-
- /**
- * Dispatch the call on its last statement.
- */
- public void branchChainTo(Label label) {
- if (this.statements != null) {
- this.statements[statements.length - 1].branchChainTo(label);
- }
- }
-
-}