public PageState <TPage> ReducePop(
PageState <TPage> pageState,
SceneState <TScene> sceneState,
PopAction action
)
{
// don't remove last page
if (pageState.Stack.Count > 1)
{
pageState.Stack.RemoveLast();
}
pageState.SetStateChanged();
ReduceAdjust(pageState, sceneState);
return(pageState);
}
internal void Add(PopAction <TViewModel> action)
{
_pops.Add(action);
}
Reaction operation()
{
if (LookAhead(EngageToken.KW_POP))
{
match(EngageToken.KW_POP);
string name = consumeText(EngageToken.ID);
PopAction op = new PopAction();
op.Name = name;
return(op);
}
else if (LookAhead(EngageToken.KW_POP_STAR_))
{
match(EngageToken.KW_POP_STAR_);
string name = consumeText(EngageToken.ID);
PopStarAction op = new PopStarAction();
op.Name = name;
return(op);
}
else if (LookAhead(EngageToken.KW_POP_HASH_))
{
match(EngageToken.KW_POP_HASH_);
string name = consumeText(EngageToken.ID);
PopHashAction op = new PopHashAction();
op.Name = name;
return(op);
}
else if (LookAhead(EngageToken.KW_AWAIT, EngageToken.LPAREN))
{
match(EngageToken.KW_AWAIT);
match(EngageToken.LPAREN);
string name = consumeText(EngageToken.ID);
match(EngageToken.KW_UPON);
string extraContext = consumeText(EngageToken.ID);
match(EngageToken.RPAREN);
string tmpContext = "";
if (LookAhead(EngageToken.KW_WITH))
{
match(EngageToken.KW_WITH);
tmpContext = consumeText(EngageToken.ID);
}
AwaitAction op = new AwaitAction();
op.Name = name;
op.ExtraContext = extraContext;
op.TmpContext = tmpContext;
return(op);
}
else if (LookAhead(EngageToken.KW_AWAIT))
{
match(EngageToken.KW_AWAIT);
string name = consumeText(EngageToken.ID);
string tmpContext = "";
if (LookAhead(EngageToken.KW_WITH))
{
match(EngageToken.KW_WITH);
tmpContext = consumeText(EngageToken.ID);
}
AwaitAction op = new AwaitAction();
op.Name = name;
op.ExtraContext = "";
op.TmpContext = tmpContext;
return(op);
}
else if (LookAhead(EngageToken.KW_AWAIT_STAR_))
{
match(EngageToken.KW_AWAIT_STAR_);
string name = consumeText(EngageToken.ID);
string tmpContext = "";
if (LookAhead(EngageToken.KW_WITH))
{
match(EngageToken.KW_WITH);
tmpContext = consumeText(EngageToken.ID);
}
AwaitStarAction op = new AwaitStarAction();
op.Name = name;
op.TmpContext = tmpContext;
return(op);
}
else if (LookAhead(EngageToken.KW_TEAR))
{
match(EngageToken.KW_TEAR);
string name = consumeText(EngageToken.ID);
TearAction op = new TearAction();
op.Name = name;
return(op);
}
else
{
fail("Expected operation");
return(null);
}
}