49 lines
1.1 KiB
Java
49 lines
1.1 KiB
Java
package com.webcodepro.applecommander.util.applesoft;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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import java.io.PrintStream;
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import java.util.ArrayList;
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import java.util.List;
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/** An AppleSoft BASIC Line representation. */
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public class Line {
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public final int lineNumber;
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public final List<Statement> statements = new ArrayList<>();
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public Line(int lineNumber) {
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this.lineNumber = lineNumber;
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}
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public void prettyPrint(PrintStream ps) {
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boolean first = true;
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for (Statement statement : statements) {
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if (first) {
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first = false;
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ps.printf("%5d ", lineNumber);
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} else {
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ps.printf("%5s ", ":");
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}
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statement.prettyPrint(ps);
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ps.println();
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}
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}
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public int toBytes(int address, ByteArrayOutputStream os) throws IOException {
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ByteArrayOutputStream tmp = new ByteArrayOutputStream();
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for (Statement stmt : statements) {
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if (tmp.size() > 0) tmp.write(':');
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stmt.toBytes(tmp);
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}
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int nextAddress = address + tmp.size() + 5;
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os.write(nextAddress);
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os.write(nextAddress >> 8);
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os.write(lineNumber);
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os.write(lineNumber >> 8);
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tmp.writeTo(os);
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os.write(0x00);
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return nextAddress;
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}
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}
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