private ITermMatcher BuildMatcher(AstQuery ast)
{
var wordQuery = ast as WordAstQuery;
if (wordQuery != null)
{
return(BuildWordMatcher(wordQuery));
}
var wildQuery = ast as WildcardAstQuery;
if (wildQuery != null)
{
return(BuildWildcardMatcher(wildQuery));
}
var editQuery = ast as EditAstQuery;
if (editQuery != null)
{
return(BuildEditMatcher(editQuery));
}
throw new Exception("Not a terminal query");
}
private ISearchQuery Compile(AstQuery ast)
{
if (ast == null)
{
throw new ArgumentNullException(nameof(ast));
}
if ((ast is WordAstQuery) ||
(ast is WildcardAstQuery) ||
(ast is EditAstQuery))
{
return(CompilePattern(index.GetTerms(BuildMatcher(ast))));
}
var func = ast as FunctionAstQuery;
if (func != null)
{
if (func.Name == "OR")
{
return(CompileOr(func));
}
else if (func.Name == "SEQ")
{
return(CompileSeq(func));
}
else
{
throw new NotSupportedException($"Function {func.Name} is not supported");
}
}
throw new NotSupportedException($"Query {ast.Name} is not supported");
}
private ISearchQuery Compile(AstQuery ast)
{
if (ast == null)
{
throw new ArgumentNullException(nameof(ast));
}
var wordQuery = ast as WordAstQuery;
if (wordQuery != null)
{
return(CompileWord(wordQuery));
}
var wildQuery = ast as WildcardAstQuery;
if (wildQuery != null)
{
return(CompileWildcard(wildQuery));
}
var editQuery = ast as EditAstQuery;
if (editQuery != null)
{
return(CompileEdit(editQuery));
}
var func = ast as FunctionAstQuery;
if (func != null)
{
if (func.Name == "OR")
{
return(CompileOr(func));
}
else if (func.Name == "SEQ")
{
return(CompileSeq(func));
}
else
{
throw new NotSupportedException($"Function {func.Name} is not supported");
}
}
throw new NotSupportedException($"Query {ast.Name} is not supported");
}
public ParseResult(AstQuery query, int position)
{
this.query = query;
this.position = position;
}