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/*
 * Anarres C Preprocessor
 * Copyright (c) 2007-2008, Shevek
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
 * or implied.  See the License for the specific language governing
 * permissions and limitations under the License.
 */

package org.anarres.cpp;

/* pp */ class State {
	boolean	parent;
	boolean	active;
	boolean	sawElse;

	/* pp */ State() {
		this.parent = true;
		this.active = true;
		this.sawElse = false;
	}

	/* pp */ State(State parent) {
		this.parent = parent.isParentActive() && parent.isActive();
		this.active = true;
		this.sawElse = false;
	}

	/* Required for #elif */
	/* pp */ void setParentActive(boolean b) {
		this.parent = b;
	}

	/* pp */ boolean isParentActive() {
		return parent;
	}

	/* pp */ void setActive(boolean b) {
		this.active = b;
	}

	/* pp */ boolean isActive() {
		return active;
	}

	/* pp */ void setSawElse() {
		sawElse = true;
	}

	/* pp */ boolean sawElse() {
		return sawElse;
	}

	public String toString() {
		return "parent=" + parent +
			", active=" + active +
			", sawelse=" + sawElse;
	}
}