public EXPRBLOCK CreateBlock(EXPRBLOCK pOptionalCurrentBlock, EXPRSTMT pOptionalStatements, Scope pOptionalScope)
{
EXPRBLOCK rval = new EXPRBLOCK();
rval.kind = ExpressionKind.EK_BLOCK;
rval.type = null;
rval.flags = 0;
rval.SetOptionalStatements(pOptionalStatements);
rval.OptionalScopeSymbol = pOptionalScope;
Debug.Assert(rval != null);
return(rval);
}
/////////////////////////////////////////////////////////////////////////////////
protected EXPRSTMT DispatchStatementList(EXPRSTMT expr)
{
Debug.Assert(expr != null);
EXPRSTMT first = expr;
EXPRSTMT pexpr = first;
while (pexpr != null)
{
// If the processor replaces the statement -- potentially with
// null, another statement, or a list of statements -- then we
// make sure that the statement list is hooked together correctly.
EXPRSTMT next = pexpr.GetOptionalNextStatement();
EXPRSTMT old = pexpr;
// Unhook the next one.
pexpr.SetOptionalNextStatement(null);
EXPR result = Dispatch(pexpr);
Debug.Assert(result == null || result.isSTMT());
if (pexpr == first)
{
first = (result == null) ? null : result.asSTMT();
}
else
{
pexpr.SetOptionalNextStatement((result == null) ? null : result.asSTMT());
}
// A transformation may return back a list of statements (or
// if the statements have been determined to be unnecessary,
// perhaps it has simply returned null.)
//
// Skip visiting the new list, then hook the tail of the old list
// up to the end of the new list.
while (pexpr.GetOptionalNextStatement() != null)
{
pexpr = pexpr.GetOptionalNextStatement();
}
// Re-hook the next pointer.
pexpr.SetOptionalNextStatement(next);
}
return first;
}
/////////////////////////////////////////////////////////////////////////////////
protected EXPRSTMT DispatchStatementList(EXPRSTMT expr)
{
Debug.Assert(expr != null);
EXPRSTMT first = expr;
EXPRSTMT pexpr = first;
while (pexpr != null)
{
// If the processor replaces the statement -- potentially with
// null, another statement, or a list of statements -- then we
// make sure that the statement list is hooked together correctly.
EXPRSTMT next = pexpr.GetOptionalNextStatement();
EXPRSTMT old = pexpr;
// Unhook the next one.
pexpr.SetOptionalNextStatement(null);
EXPR result = Dispatch(pexpr);
Debug.Assert(result == null || result.isSTMT());
if (pexpr == first)
{
first = (result == null) ? null : result.asSTMT();
}
else
{
pexpr.SetOptionalNextStatement((result == null) ? null : result.asSTMT());
}
// A transformation may return back a list of statements (or
// if the statements have been determined to be unnecessary,
// perhaps it has simply returned null.)
//
// Skip visiting the new list, then hook the tail of the old list
// up to the end of the new list.
while (pexpr.GetOptionalNextStatement() != null)
{
pexpr = pexpr.GetOptionalNextStatement();
}
// Re-hook the next pointer.
pexpr.SetOptionalNextStatement(next);
}
return(first);
}
protected virtual EXPR VisitSTMT(EXPRSTMT pExpr)
{
return VisitEXPR(pExpr);
}
protected virtual EXPR VisitSTMT(EXPRSTMT pExpr)
{
return(VisitEXPR(pExpr));
}
public EXPRBLOCK CreateBlock(EXPRBLOCK pOptionalCurrentBlock, EXPRSTMT pOptionalStatements, Scope pOptionalScope)
{
EXPRBLOCK rval = new EXPRBLOCK();
rval.kind = ExpressionKind.EK_BLOCK;
rval.type = null;
rval.flags = 0;
rval.SetOptionalStatements(pOptionalStatements);
rval.OptionalScopeSymbol = pOptionalScope;
Debug.Assert(rval != null);
return (rval);
}
