static IEnumerable<TaggedPair> HandleSequence(IEnumerable<TaggedPair> taggedTokens)
{
var pattern = Grammar.sequenceForm;
while (true)
{
int index = taggedTokens.IndexOfPattern(pattern, (x, p) => x.item1 == p);
if (index == -1)
{
break;
}
var subSequence = taggedTokens.Sub(index, pattern.Count());
var newAction = ActionParser.ParseToSingle(subSequence.Single(x => x.item1 == SyntacticPart.String).item2 as string);
var newPair = new TaggedPair(SyntacticPart.Action, newAction);
taggedTokens = taggedTokens.RemoveRange(index, pattern.Count());
taggedTokens = taggedTokens.Insert(index, newPair);
}
//Debug.LogWarning(taggedTokens.Select(x => x.item1 == SyntacticPart.Action ? "action" : x.item2).ToStringList("\n"));
//Debug.LogWarning(taggedTokens.Select(x => x.item1).ToStringList("\n"));
return taggedTokens;
}
static IEnumerable<TaggedPair> HandleIf(IEnumerable<TaggedPair> taggedTokens)
{
var pattern = Grammar.ifForm;
int start = 0;
while (true)
{
int index = taggedTokens.IndexOfPattern(pattern, (x, p) => x.item1 == p, start);
if (index == -1)
{
break;
}
if (taggedTokens.Count() > index + pattern.Count() && taggedTokens.ElementAt(index + pattern.Count()).item1 == SyntacticPart.Else)
{
start += pattern.Count() + 1;
continue;
}
var subSequence = taggedTokens.Sub(index, pattern.Count());
var newAction = new ActionIf(
subSequence.Single(x => x.item1 == SyntacticPart.String).item2 as string,
subSequence.Single(x => x.item1 == SyntacticPart.Action).item2 as Action2);
var newPair = new TaggedPair(SyntacticPart.Action, newAction);
taggedTokens = taggedTokens.RemoveRange(index, pattern.Count());
taggedTokens = taggedTokens.Insert(index, newPair);
}
//Debug.LogWarning(taggedTokens.Select(x => x.item1 == SyntacticPart.Action ? "action" : x.item2).ToStringList("\n"));
//Debug.LogWarning(taggedTokens.Select(x => x.item1).ToStringList("\n"));
return taggedTokens;
}
