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package org.hisrc.jscm.codemodel.impl;

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;

import org.hisrc.jscm.codemodel.JSCodeModel;
import org.hisrc.jscm.codemodel.JSFunctionDeclaration;
import org.hisrc.jscm.codemodel.JSProgram;
import org.hisrc.jscm.codemodel.JSProgramVisitor;
import org.hisrc.jscm.codemodel.JSSourceElement;
import org.hisrc.jscm.codemodel.lang.Validate;
import org.hisrc.jscm.codemodel.statement.JSStatement;
import org.hisrc.jscm.codemodel.statement.impl.StatementGeneratorImpl;

public class ProgramImpl extends StatementGeneratorImpl implements JSProgram {

	private final List sourceElements = new ArrayList();
	private final List unmodifiableSourceElements = Collections
			.unmodifiableList(sourceElements);

	public ProgramImpl(JSCodeModel codeModel) {
		super(codeModel);
	}

	@Override
	protected  S add(S statement) {
		Validate.notNull(statement);
		this.sourceElements.add(statement);
		return statement;
	}

	@Override
	public List getSourceElements() {
		return unmodifiableSourceElements;
	}

	@Override
	public JSFunctionDeclaration functionDeclaration(String name) {
		Validate.notNull(name);
		final JSFunctionDeclaration functionDeclaration = new FunctionDeclarationImpl(
				getCodeModel(), name);
		sourceElements.add(functionDeclaration);
		return functionDeclaration;
	}

	@Override
	public  V acceptProgramVisitor(
			JSProgramVisitor visitor) throws E {
		return visitor.visitProgram(this);
	}
}