Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2012 IBM Corporation and others. * * This program and the accompanying materials * are made available under the terms of the Eclipse Public License 2.0 * which accompanies this distribution, and is available at * https://www.eclipse.org/legal/epl-2.0/ * * SPDX-License-Identifier: EPL-2.0 * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.jdt.internal.compiler.ast; import org.eclipse.jdt.internal.compiler.flow.FlowContext; import org.eclipse.jdt.internal.compiler.flow.FlowInfo; import org.eclipse.jdt.internal.compiler.impl.*; import org.eclipse.jdt.internal.compiler.lookup.*; public abstract class Literal extends Expression { public Literal(int s, int e) { this.sourceStart = s; this.sourceEnd = e; } @Override public FlowInfo analyseCode(BlockScope currentScope, FlowContext flowContext, FlowInfo flowInfo) { return flowInfo; } public abstract void computeConstant(); public abstract TypeBinding literalType(BlockScope scope); @Override public StringBuffer printExpression(int indent, StringBuffer output) { return output.append(source()); } @Override public TypeBinding resolveType(BlockScope scope) { // compute the real value, which must range its type's range this.resolvedType = literalType(scope); // in case of error, constant did remain null computeConstant(); if (this.constant == null) { scope.problemReporter().constantOutOfRange(this, this.resolvedType); this.constant = Constant.NotAConstant; } return this.resolvedType; } public abstract char[] source(); }