public bool ParseTermOrPhrase(NuGetSearchTerm result)
{
Debug.Assert(_tokenizer.Peek() == TokenType.Term || _tokenizer.Peek() == TokenType.Phrase);
result.TermOrPhrase = _tokenizer.Term() ?? _tokenizer.Phrase();
_tokenizer.Pop();
return true;
}
// Returns list of 2-element arrays, element 0 is field name (or null), element 1 is term/phrase
public List<NuGetSearchTerm> Parse(string searchTerm)
{
var terms = new List<NuGetSearchTerm>();
_tokenizer = new Tokenizer(searchTerm);
while (_tokenizer.Peek() != TokenType.Eof)
{
var term = new NuGetSearchTerm();
if (_tokenizer.Peek() == TokenType.Field)
{
if (ParseField(term))
{
terms.Add(term);
}
}
else
{
if (ParseTermOrPhrase(term))
{
terms.Add(term);
}
}
}
return terms;
}
public bool ParseTermOrPhrase(NuGetSearchTerm result)
{
Debug.Assert(_tokenizer.Peek() == TokenType.Term || _tokenizer.Peek() == TokenType.Phrase);
result.TermOrPhrase = _tokenizer.Term() ?? _tokenizer.Phrase();
_tokenizer.Pop();
return(true);
}
// Returns list of 2-element arrays, element 0 is field name (or null), element 1 is term/phrase
public List <NuGetSearchTerm> Parse(string searchTerm)
{
var terms = new List <NuGetSearchTerm>();
_tokenizer = new Tokenizer(searchTerm);
while (_tokenizer.Peek() != TokenType.Eof)
{
var term = new NuGetSearchTerm();
if (_tokenizer.Peek() == TokenType.Field)
{
if (ParseField(term))
{
terms.Add(term);
}
}
else
{
if (ParseTermOrPhrase(term))
{
terms.Add(term);
}
}
}
return(terms);
}
// Helper function
// 1) fix cases of field names: ID -> Id
// 2) null out field names that we don't understand (so we will search them as non-field-specific terms)
// 3) For ID search, split search terms such as Id:"Foo.Bar" and "Foo-Bar" into a phrase "Foo Bar" which will work better for analyzed field search
private static NuGetSearchTerm StandardizeSearchTerms(NuGetSearchTerm input)
{
var fieldName = FieldAliases
.FirstOrDefault(f => f.Equals(input.Field, StringComparison.OrdinalIgnoreCase));
if (string.Equals(fieldName, "Author", StringComparison.OrdinalIgnoreCase))
{
fieldName = "Authors";
}
else if (string.Equals(fieldName, "Owner", StringComparison.OrdinalIgnoreCase))
{
fieldName = "Owners";
}
else if (string.Equals(fieldName, "Tag", StringComparison.OrdinalIgnoreCase))
{
fieldName = "Tags";
}
var searchTerm = new NuGetSearchTerm {
Field = fieldName, TermOrPhrase = input.TermOrPhrase
};
if (fieldName == "Id")
{
searchTerm.TermOrPhrase = PackageIndexEntity.SplitId(searchTerm.TermOrPhrase);
}
return(searchTerm);
}
public bool ParseField(NuGetSearchTerm result)
{
// ignore extra leading fields - just accept the last one
do
{
result.Field = _tokenizer.Field();
_tokenizer.Pop();
}while (_tokenizer.Peek() == TokenType.Field);
// Eof, Term, or Phrase....
if (_tokenizer.Peek() != TokenType.Eof)
{
return(ParseTermOrPhrase(result));
}
return(false);
}
public bool ParseField(NuGetSearchTerm result)
{
// ignore extra leading fields - just accept the last one
do
{
result.Field = _tokenizer.Field();
_tokenizer.Pop();
}
while (_tokenizer.Peek() == TokenType.Field);
// Eof, Term, or Phrase....
if (_tokenizer.Peek() != TokenType.Eof)
{
return ParseTermOrPhrase(result);
}
return false;
}
// Helper function
// 1) fix cases of field names: ID -> Id
// 2) null out field names that we don't understand (so we will search them as non-field-specific terms)
// 3) For ID search, split search terms such as Id:"Foo.Bar" and "Foo-Bar" into a phrase "Foo Bar" which will work better for analyzed field search
private static NuGetSearchTerm StandardizeSearchTerms(NuGetSearchTerm input)
{
var fieldName = FieldAliases
.FirstOrDefault(f => f.Equals(input.Field, StringComparison.OrdinalIgnoreCase));
if (string.Equals(fieldName, "Author", StringComparison.OrdinalIgnoreCase))
{
fieldName = "Authors";
}
else if (string.Equals(fieldName, "Owner", StringComparison.OrdinalIgnoreCase))
{
fieldName = "Owners";
}
else if (string.Equals(fieldName, "Tag", StringComparison.OrdinalIgnoreCase))
{
fieldName = "Tags";
}
var searchTerm = new NuGetSearchTerm { Field = fieldName, TermOrPhrase = input.TermOrPhrase };
if (fieldName == "Id")
{
searchTerm.TermOrPhrase = PackageIndexEntity.SplitId(searchTerm.TermOrPhrase);
}
return searchTerm;
}
