package slangc.parser;

public final class SourcePosition {
	private final Source source;
	private final int index, line, character;

	public SourcePosition(Source source, int index, int line, int character) {
		this.source = source;
		this.index = index;
		this.line = line;
		this.character = character;
	}
	
	public SourcePosition(Source source) {
		this(source, 0, 1, 1);
	}
	
	public SourcePosition clone() {
		return new SourcePosition(source, index, line, character);
	}
	
	public Source getSource() {
		return source;
	}
	
	public int getIndex() {
		return index;
	}
	
	public int getLineCount() {
		return line;
	}
	
	public int getCharacterCount() {
		return character;
	}
	
	public boolean isAtEnd() {
		return !source.isIndexWithinBounds(index);
	}
	
	@Override
	public String toString() {
		return "SourcePosition(" + source.toString() + ", " + index + ", " + line + ", " + character + ")";
	}
}