package org.lilystudio.javascript.statement;
import java.io.IOException;
import java.io.Writer;
import org.lilystudio.javascript.Environment;
import org.lilystudio.javascript.IExpression;
import org.lilystudio.javascript.IStatement;
import org.lilystudio.javascript.scope.Scope;
import org.mozilla.javascript.Node;
import org.mozilla.javascript.ScriptOrFnNode;
/**
* with语句节点
*
* @version 1.0.0, 2010/01/01
* @author 欧阳先伟
* @since Common 0.1
*/
public class WithStatement extends Statement implements IBodyStatement {
/** with的表达式 */
private IExpression target;
/** with的主体 */
private IStatement bodyStatement;
/**
* 创建with语句节点
*
* @param node
* 语句子节点对应的rhino节点
* @param root
* 语句子节点对应的rhino根节点
* @param scope
* 语句子节点生存域
*/
public WithStatement(Node node, ScriptOrFnNode root, Scope scope) {
super(node);
target = addExpression(node.getFirstChild(), root, scope);
node = node.getNext();
bodyStatement = addStatement(node.getFirstChild(), root, new Scope(scope));
setNext(node.getNext().getNext());
}
public boolean isNeedLeftSeparator() {
return true;
}
public boolean isNeedRightSeparator() {
return bodyStatement.isNeedRightSeparator();
}
public void write(Writer writer, Environment env) throws IOException {
writer.write("with(");
target.write(writer, env);
writer.write(")");
bodyStatement.write(writer, env);
}
public boolean isIfBody() {
return bodyStatement instanceof IBodyStatement
&& ((IBodyStatement) bodyStatement).isIfBody();
}
}