/// <summary>Creates and reads a new if(){} fragment. Note that the else section is not read.</summary>
/// <param name="sr">The lexer to read the if condition and its true bracket block from.</param>
public IfFragment(CodeLexer sr){
ApplyElseTo=this;
Condition=new BracketFragment(sr);
IfTrue=new BracketFragment(sr);
// Add them as children such that code tree iterators can visit them:
AddChild(Condition);
AddChild(IfTrue);
}
/// <summary>Creates and reads a new if(){} fragment. Note that the else section is not read.</summary>
/// <param name="sr">The lexer to read the if condition and its true bracket block from.</param>
public IfFragment(CodeLexer sr)
{
ApplyElseTo = this;
Condition = new BracketFragment(sr);
IfTrue = new BracketFragment(sr);
// Add them as children such that code tree iterators can visit them:
AddChild(Condition);
AddChild(IfTrue);
}
public override AddResult AddTo(CodeFragment to, CodeLexer sr)
{
if (Value == "")
{
return(AddResult.Ok);
}
else if (Value == "var")
{
// We're reading a local:
return(AddResult.Local);
}
else if (Value == "for" || Value == "while")
{
return(new ForFragment(sr, Value).AddTo(to, sr));
}
else if (Value == "switch")
{
return(new SwitchFragment(sr).AddTo(to, sr));
}
else if (Value == "if")
{
return(new IfFragment(sr).AddTo(to, sr));
}
else if (Value == "else")
{
CodeFragment previous = to.ParentFragment;
// Parent->prev operation->last object. Should be an IF.
if (previous == null || ((previous = previous.LastChild) == null) || ((previous = previous.LastChild) == null) || previous.GetType() != typeof(IfFragment))
{
Error("Else can only be applied to an if. E.g. if(){}else{}.");
}
IfFragment ifFrag = (IfFragment)previous;
ifFrag.ApplyElseTo.SetIfFalse(new BracketFragment(sr));
return(AddResult.Stop);
}
else if (Value == "elseif")
{
CodeFragment previous = to.ParentFragment;
// Parent->prev operation->last object. Should be an IF.
if (previous == null || ((previous = previous.LastChild) == null) || ((previous = previous.LastChild) == null) || previous.GetType() != typeof(IfFragment))
{
Error("Else if can only be applied to an if. E.g. if(){}else if{}..");
}
IfFragment ifFrag = (IfFragment)previous;
IfFragment newfrag = new IfFragment(sr);
BracketFragment bf = new BracketFragment();
OperationFragment op = new OperationFragment();
op.AddChild(newfrag);
bf.AddChild(op);
ifFrag.ApplyElseTo.SetIfFalse(bf);
ifFrag.ApplyElseTo = newfrag;
return(AddResult.Stop);
}
else
{
return(base.AddTo(to, sr));
}
}
public override AddResult AddTo(CodeFragment to,CodeLexer sr){
if(Value==""){
return AddResult.Ok;
}else if(Value=="var"){
// We're reading a local:
return AddResult.Local;
}else if(Value=="for" || Value=="while"){
return new ForFragment(sr,Value).AddTo(to,sr);
}else if(Value=="switch"){
return new SwitchFragment(sr).AddTo(to,sr);
}else if(Value=="if"){
return new IfFragment(sr).AddTo(to,sr);
}else if(Value=="else"){
CodeFragment previous=to.ParentFragment;
// Parent->prev operation->last object. Should be an IF.
if(previous==null||((previous=previous.LastChild)==null)||((previous=previous.LastChild)==null)||previous.GetType()!=typeof(IfFragment)){
Error("Else can only be applied to an if. E.g. if(){}else{}.");
}
IfFragment ifFrag=(IfFragment)previous;
ifFrag.ApplyElseTo.SetIfFalse(new BracketFragment(sr));
return AddResult.Stop;
}else if(Value=="elseif"){
CodeFragment previous=to.ParentFragment;
// Parent->prev operation->last object. Should be an IF.
if(previous==null||((previous=previous.LastChild)==null)||((previous=previous.LastChild)==null)||previous.GetType()!=typeof(IfFragment)){
Error("Else if can only be applied to an if. E.g. if(){}else if{}..");
}
IfFragment ifFrag=(IfFragment)previous;
IfFragment newfrag=new IfFragment(sr);
BracketFragment bf=new BracketFragment();
OperationFragment op=new OperationFragment();
op.AddChild(newfrag);
bf.AddChild(op);
ifFrag.ApplyElseTo.SetIfFalse(bf);
ifFrag.ApplyElseTo=newfrag;
return AddResult.Stop;
}else{
return base.AddTo(to,sr);
}
}