private static void _determineActions(MacroContext context, [InstantHandle] Func<AstGetSet> retValue,
out AstNode contStmt, out AstNode breakStmt)
{
var inv = context.Invocation;
var bl = context.CurrentLoopBlock;
if (bl == null)
{
contStmt = new AstReturn(inv.File, inv.Line, inv.Column, ReturnVariant.Continue)
{Expression = retValue()};
breakStmt = new AstReturn(inv.File, inv.Line, inv.Column, ReturnVariant.Break)
{Expression = retValue()};
}
else
{
contStmt = new AstExplicitGoTo(inv.File, inv.Line, inv.Column, bl.ContinueLabel);
breakStmt = new AstExplicitGoTo(inv.File, inv.Line, inv.Column, bl.BreakLabel);
}
}
private bool _optimizeConditionalReturnExpression(CompilerTarget target)
{
var cond = Expression as AstConditionalExpression;
if (cond == null)
return false;
// return if( cond )
// expr1
// else
// expr2
var retif = new AstCondition(Position, target.CurrentBlock, cond.Condition, cond.IsNegative);
var ret1 = new AstReturn(File, Line, Column, ReturnVariant)
{
Expression = cond.IfExpression
};
retif.IfBlock.Add(ret1);
var ret2 = new AstReturn(File, Line, Column, ReturnVariant)
{
Expression = cond.ElseExpression
};
//not added to the condition
retif.EmitEffectCode(target); // if( cond )
// return expr1
ret2.EmitEffectCode(target); // return expr2
//ret1 and ret2 will continue optimizing
return true;
}
