public override object VisitIterationStatement([NotNull] CMinusParser.IterationStatementContext context)
{
this.Visit(context.logicalOrExpression());
this.internalScope++;
this.symbolTable.EnterScope();
this.Visit(context.statement());
this.symbolTable.ExitScope();
this.internalScope--;
return(null);
}
public override object VisitIterationStatement([NotNull] CMinusParser.IterationStatementContext context)
{
int logicalExpressionLabel = this.labelGenerator.GenerateLabel();
int statementBodyLabel = this.labelGenerator.GenerateLabel();
this.writer.WriteUnconditionalJump(logicalExpressionLabel);
this.writer.WriteLabel(statementBodyLabel);
this.Visit(context.statement());
this.writer.WriteLabel(logicalExpressionLabel);
this.Visit(context.logicalOrExpression());
this.writer.WriteJumpIfTrue(statementBodyLabel);
return(null);
}
public override object VisitIterationStatement([NotNull] CMinusParser.IterationStatementContext context)
{
this.labelGenerator.IncrementWhileCount();
string expressionLabel = this.labelGenerator.GenerateWhileConditionLabel();
string loopLabel = this.labelGenerator.GenerateWhileLabel();
this.writer.WriteUnconditionalJump(expressionLabel);
this.writer.WriteLabel(loopLabel);
this.Visit(context.statement());
this.writer.WriteLabel(expressionLabel);
this.Visit(context.logicalOrExpression());
this.writer.WriteUnaryArithmeticExpression("!");
this.writer.WriteConditionalJump(loopLabel);
return(null);
}