public static void EndCompoundStatement(List <CCompoundStatmentItemType> itemTypes)
{
CIdentifier.ExitBlockScope();
List <CStatment> blockBody = new List <CStatment>();
List <int> localVarSizes = new List <int>();
//the item types come in sequential order (top to bottom), but they are sitting on the stack in reverse order (botom to top)
//revers the list to deal with this
itemTypes.Reverse();
foreach (var itemType in itemTypes)
{
if (itemType == CCompoundStatmentItemType.Statment)
{
CStatment stat = PopStatement();
blockBody.Add(stat);
}
else
{
CDeclaration decl = CDeclaration.PopDecl();
localVarSizes.Add(decl.Size);
//get a statments that initilizes the local variable (or does nothing if it is not a definition)
blockBody.Add(decl.GetDefinitionStatment());
}
}
//put the statments back in top to bottom order
blockBody.Reverse();
PushStatement(new CStatment(blockBody, localVarSizes));
}
public static void EndForLoopStatement(CForInitType initType, bool hasConditionExpression, bool hasIterationExpression)
{
List <CCompoundStatmentItemType> compondItems = new List <CCompoundStatmentItemType> {
CCompoundStatmentItemType.Statment, CCompoundStatmentItemType.Statment
};
CStatment loopBody = PopStatement();
CStatment iterationStatement = hasIterationExpression ? new CStatment(CExpression.PopExpression()) : new CStatment();
CExpression condition;
if (hasConditionExpression)
{
condition = CExpression.PopExpression();
}
else
{
CExpression.PushConstant("1");
condition = CExpression.PopExpression();
}
//init_claus
CStatment initClaus;
if (initType == CForInitType.Decl)
{
initClaus = CDeclaration.PopDecl().GetDefinitionStatment();
}
else if (initType == CForInitType.Expression)
{
initClaus = new CStatment(CExpression.PopExpression());
}
else
{
initClaus = new CStatment();
}
// contruct loop body
BeginCompoundStatement();
PushStatement(loopBody);
PushStatement(iterationStatement);
EndCompoundStatement(compondItems);
CStatment loopbody = PopStatement();
// while(cond_expression) loopbody
CExpression.PushExpression(condition);
PushStatement(loopBody);
BeginWhileLoopStatement();
EndWhileLoopStatement();
CStatment whilestat = PopStatement();
PushStatement(initClaus);
PushStatement(whilestat);
EndCompoundStatement(compondItems);
PushStatement(PopStatement());
}
