package weasel.compiler.keywords;
import java.util.ListIterator;
import weasel.compiler.WeaselCompiler;
import weasel.compiler.WeaselCompilerException;
import weasel.compiler.WeaselCompilerReturn;
import weasel.compiler.WeaselInstructionList;
import weasel.compiler.WeaselKeyWordCompilerHelper;
import weasel.compiler.WeaselToken;
import weasel.compiler.WeaselTokenType;
import weasel.interpreter.bytecode.WeaselInstructionJump;
public class WeaselKeyWordCompilerBreak extends WeaselKeyWordCompiler {
@Override
public WeaselCompilerReturn compile(WeaselToken token, WeaselCompiler compiler, WeaselKeyWordCompilerHelper compilerHelpher, ListIterator<WeaselToken> iterator) throws WeaselCompilerException {
WeaselToken t = iterator.next();
int s = 1;
if(t.tokenType==WeaselTokenType.INTEGER){
s = (Integer)t.param;
if(s<=0)
throw new WeaselCompilerException(t.line, "Negatives and 0 are not permitted");
t = iterator.next();
}
WeaselInstructionList instructionList = new WeaselInstructionList();
compilerHelpher.addClosingsAndFrees(s, instructionList, true);
WeaselInstructionJump breakJump;
instructionList.add(token.line, breakJump = new WeaselInstructionJump());
compilerHelpher.addBreak(s, breakJump);
expect(t, WeaselTokenType.SEMICOLON);
return null;
}
}