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package prompto.compiler;

import java.io.IOException;
import java.io.OutputStream;

class ByteWriter {

	OutputStream o;
	int length = 0;
	
	ByteWriter(OutputStream o) {
		this.o = o;
	}
	
	public int length() {
		return length;
	}

	private void write(int i) {
		try {
			o.write(i);
			length++;
		} catch (IOException e) {
			throw new CompilerException(e);
		}
	}

	void writeBytes(byte[] b) {
		try {
			o.write(b);
			length += b.length;
		} catch (IOException e) {
			throw new CompilerException(e);
		}
	}

	void writeU1(int u1) {
		write(u1);
	}

	void writeU2(int u2) {
		write(u2 >> 8);
		write(u2);
	}

	void writeU4(int u4) {
		write(u4 >> 24);
		write(u4 >> 16);
		write(u4 >> 8);
		write(u4);
	}


}