Copyright (c) 2000, 2014 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
/*******************************************************************************
 * Copyright (c) 2000, 2014 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.ASTVisitor;
import org.eclipse.jdt.internal.compiler.codegen.CodeStream;
import org.eclipse.jdt.internal.compiler.impl.StringConstant;
import org.eclipse.jdt.internal.compiler.lookup.BlockScope;
import org.eclipse.jdt.internal.compiler.lookup.TypeBinding;
import org.eclipse.jdt.internal.compiler.util.Util;

public class StringLiteral extends Literal {

	char[] source;
	int lineNumber;

	public StringLiteral(char[] token, int start, int end, int lineNumber) {

		this(start,end);
		this.source = token;
		this.lineNumber = lineNumber - 1; // line number is 1 based
	}

	public StringLiteral(int s, int e) {

		super(s,e);
	}

	@Override
	public void computeConstant() {

		this.constant = StringConstant.fromValue(String.valueOf(this.source));
	}

	public ExtendedStringLiteral extendWith(CharLiteral lit){

		//add the lit source to mine, just as if it was mine
		return new ExtendedStringLiteral(this,lit);
	}

	public ExtendedStringLiteral extendWith(StringLiteral lit){

		//add the lit source to mine, just as if it was mine
		return new ExtendedStringLiteral(this,lit);
	}

	
 Add the lit source to mine, just as if it was mine
/**
	 *  Add the lit source to mine, just as if it was mine
	 */
	public StringLiteralConcatenation extendsWith(StringLiteral lit) {
		return new StringLiteralConcatenation(this, lit);
	}
	
Code generation for string literal
/**
	 * Code generation for string literal
	 */
	@Override
	public void generateCode(BlockScope currentScope, CodeStream codeStream, boolean valueRequired) {

		int pc = codeStream.position;
		if (valueRequired)
			codeStream.ldc(this.constant.stringValue());
		codeStream.recordPositionsFrom(pc, this.sourceStart);
	}

	@Override
	public TypeBinding literalType(BlockScope scope) {

		return scope.getJavaLangString();
	}

	@Override
	public StringBuffer printExpression(int indent, StringBuffer output) {

		// handle some special char.....
		output.append('\"');
		for (int i = 0; i < this.source.length; i++) {
			Util.appendEscapedChar(output, this.source[i], true);
		}
		output.append('\"');
		return output;
	}

	@Override
	public char[] source() {

		return this.source;
	}

	@Override
	public void traverse(ASTVisitor visitor, BlockScope scope) {
		visitor.visit(this, scope);
		visitor.endVisit(this, scope);
	}
}