/// <summary>Checks if given glyph line at the given position matches given rule.</summary>
/// <param name="line"/>
/// <param name="rule"/>
protected internal virtual bool CheckIfBacktrackContextMatch(GlyphLine line, ContextualSubstRule rule)
{
int j;
OpenTableLookup.GlyphIndexer gidx = new OpenTableLookup.GlyphIndexer();
gidx.line = line;
gidx.idx = line.idx;
for (j = 0; j < rule.GetBacktrackContextLength(); ++j)
{
gidx.PreviousGlyph(openReader, lookupFlag);
if (gidx.glyph == null || !rule.IsGlyphMatchesBacktrack(gidx.glyph.GetCode(), j))
{
break;
}
}
return(j == rule.GetBacktrackContextLength());
}
/// <summary>Checks if given glyph line at the given position matches given rule.</summary>
/// <param name="line"/>
/// <param name="rule"/>
/// <param name="startIdx"/>
protected internal virtual bool CheckIfLookaheadContextMatch(GlyphLine line, ContextualSubstRule rule, int
startIdx)
{
int j;
OpenTableLookup.GlyphIndexer gidx = new OpenTableLookup.GlyphIndexer();
gidx.line = line;
gidx.idx = startIdx;
for (j = 0; j < rule.GetLookaheadContextLength(); ++j)
{
gidx.NextGlyph(openReader, lookupFlag);
if (gidx.glyph == null || !rule.IsGlyphMatchesLookahead(gidx.glyph.GetCode(), j))
{
break;
}
}
return(j == rule.GetLookaheadContextLength());
}
public SubTableLookup6Format3(OpenTypeFontTableReader openReader, int lookupFlag, SubTableLookup6Format3.SubstRuleFormat3
rule)
: base(openReader, lookupFlag)
{
this.substitutionRule = rule;
}
