bool firstMatcherDominatesSecond(PatternMatcher a, PatternMatcher b)
{
// Compare their class word first
// Compare the associated patterns.
// Extract the patterns from a, b.
ProseObject[] pa = a.AssociatedPattern;
ProseObject[] pb = b.AssociatedPattern;
for (int i = 0; i < pa.Length; i++)
{
// Most often they'll be the same and then
if (pa[i] == pb[i])
{
continue;
}
// @prose is weaker than everything else
if (pa[i] == @prose && pb[i] != @prose)
{
return(false);
}
else if (pa[i] != @prose && pb[i] == @prose)
{
continue;
}
else if (pa[i] == @raw && pb[i] is Word)
{
return(false);
}
else if (pa[i] is Word && pb[i] == @raw)
{
continue;
}
Word aword = (Word)pa[i];
List <ProseObject> descendents = aword.getAllDescendents(this);
// If there even one piece of b's pattern doesn't descend from a's
// then a doesn't dominate.
if (!descendents.Contains(pb[i]))
{
return(false);
}
}
return(true);
}
private List <ProseObject> getMatchingPatternWords(ProseObject obj)
{
List <ProseObject> matchingPatternWords = new List <ProseObject>(16);
//
// Create a list of ProseObjects that, if they appeared in a pattern, would match with obj.
//
// Objects match themselves
matchingPatternWords.Add(obj);
if (obj is ProseAction)
{
matchingPatternWords.Add(runtime.@prose);
matchingPatternWords.Add(runtime.@action);
// Pure actions can appear in text.
if (((ProseAction)obj).IsPure)
{
matchingPatternWords.Add(runtime.@text);
}
}
else if (obj is StringLiteralObject)
{
matchingPatternWords.Add(runtime.@prose);
matchingPatternWords.Add(runtime.@string);
matchingPatternWords.Add(runtime.@text);
}
else if (obj is RawWordObject)
{
matchingPatternWords.Add(runtime.@prose);
matchingPatternWords.Add(runtime.@raw);
// Don't need to add @text because "" handles it.
}
else if (obj is Word)
{
// If we see an opening "" we could start matching prose or text or string
if (obj == runtime.Quadquote)
{
matchingPatternWords.Add(runtime.@string);
matchingPatternWords.Add(runtime.@text);
matchingPatternWords.Add(runtime.@prose);
}
// If we see an opening {, the ONLY options is that we're matching prose.
else if (obj == runtime.LeftCurlyBracket)
{
//if (obj != runtime.@prose)
matchingPatternWords.Add(runtime.@prose);
}
else
{
// Arbitrary words can be @prose or @pattern (neither of which require
// any parenthetical notation). @text is left out because "" always tells
// you when you're entering a text block.
// I DON"T UNDERATND WHAT THESE IF STATEMENTS WERE SUPPOSED TO DO
//if (obj != runtime.@prose)
matchingPatternWords.Add(runtime.@prose);
//if (obj != runtime.@pattern)
matchingPatternWords.Add(runtime.@pattern);
matchingPatternWords.Add(runtime.@raw);
// If it's a word, then all descendent words are matches.
Word word = (Word)obj;
matchingPatternWords.AddRange(word.getAllDescendents(runtime));
}
}
return(matchingPatternWords);
}
