public CCompoundStatement parseDoWhileStatement(Queue <CMatchedData> matchedData)
{
CToken[] currTokens = matchedData.Dequeue().getTokens();
CStatement loopStatement, nextStatement;
CLabeledStatement continueTarget, breakTarget;
CJumpStatement continueLoop;
int i;
if (currTokens[0].tokenType != CTokenType.DO)
{
throw new System.ArgumentException("matchedData should start with a do-while statement!", "matchedData");
}
loopStatement = parseStatement(matchedData);
if (loopStatement.nextStatement is CLabeledStatement &&
loopStatement.nextStatement.nextStatement is CLabeledStatement)
{
nextStatement = ((CLabeledStatement)loopStatement.nextStatement.nextStatement).labeledStatement;
}
else
{
throw new System.ArgumentException("incorrect do-while statement!", "matchedData");
}
/* Create loop */
breakTarget = new CLabeledStatement("do-while-loop: break target", null,
nextStatement != null ? nextStatement : new CExpressionStatement(new CExpression(""), null));
continueLoop = new CJumpStatement("continue", null);
continueTarget = new CLabeledStatement("do-while-loop: continue target", null, loopStatement);
continueLoop.setTargetStatement(continueTarget);
loopStatement.setNextStatement(
new CConditionalStatement(
((CConditionalStatement)((CLabeledStatement)loopStatement.nextStatement).labeledStatement).condition,
continueLoop,
null
)
);
for (i = 0; i < this.breakJumps.Count; i++)
{
if (continueTarget.contains(this.breakJumps[i]))
{
this.breakJumps[i].setTargetStatement(breakTarget);
this.breakJumps.RemoveAt(i);
i--;
}
}
for (i = 0; i < this.continueJumps.Count; i++)
{
if (continueTarget.contains(this.continueJumps[i]))
{
this.continueJumps[i].setTargetStatement(continueTarget);
this.continueJumps.RemoveAt(i);
i--;
}
}
return(new CCompoundStatement(
new CStatement[] { continueTarget, loopStatement.nextStatement },
breakTarget
));
}
public CLabeledStatement parseWhileStatement(Queue <CMatchedData> matchedData)
{
CToken[] currTokens = matchedData.Dequeue().getTokens();
CExpression conditionExpression;
CStatement loopStatement, nextStatement;
CLabeledStatement continueTarget, breakTarget;
CJumpStatement continueLoop;
int i;
if (currTokens[0].tokenType != CTokenType.WHILE)
{
throw new System.ArgumentException("matchedData should start with a while statement!", "matchedData");
}
conditionExpression = new CExpression(getText(currTokens, 2, currTokens.Length - 1));
loopStatement = parseStatement(matchedData);
/* Create loop */
nextStatement = loopStatement.nextStatement;
breakTarget = new CLabeledStatement("while-loop: break target", null,
nextStatement != null ? nextStatement : new CExpressionStatement(new CExpression(""), null));
continueLoop = new CJumpStatement("continue", null);
loopStatement.setNextStatement(continueLoop);
continueTarget = new CLabeledStatement("while-loop: continue target", null, new CConditionalStatement(
conditionExpression,
new CCompoundStatement(new CStatement[] { loopStatement, continueLoop }, null),
breakTarget
));
continueLoop.setTargetStatement(continueTarget);
for (i = 0; i < this.breakJumps.Count; i++)
{
if (continueTarget.contains(this.breakJumps[i]))
{
this.breakJumps[i].setTargetStatement(breakTarget);
this.breakJumps.RemoveAt(i);
i--;
}
}
for (i = 0; i < this.continueJumps.Count; i++)
{
if (continueTarget.contains(this.continueJumps[i]))
{
this.continueJumps[i].setTargetStatement(continueTarget);
this.continueJumps.RemoveAt(i);
i--;
}
}
return(continueTarget);
}
