SelectionToken.h File Reference

Declares lexical token types and token records for atom selections. More...

Classes
struct	SelectionToken
	Owns one token and its source position. More...

Enumerations
enum class	SelectionTokenType {   End , Identifier , Integer , Real ,   LeftParenthesis , RightParenthesis , Colon , All ,   None , And , Or , Not ,   ByResidue , ByGroup , Bonded , Type ,   Chemical , SegmentIdentifier , ResidueIdentifier , ResidueName ,   Atom , ByNumber }
	Identifies one lexical element in an atom-selection expression. More...

Detailed Description

Declares lexical token types and token records for atom selections.

Enumeration Type Documentation

SelectionTokenType

enum class SelectionTokenType

strong

Identifies one lexical element in an atom-selection expression.

The values are internal parser categories rather than a serialized ABI. Text matching for recognized keywords and dotted operators is case-insensitive. See Atom Selection for the user-facing language.

Enumerator
End	Marks the byte position immediately after the complete expression.
Identifier	Represents an unclassified bare value.
Integer	Represents a bare signed decimal integer.
Real	Represents a bare decimal value containing one decimal point.
LeftParenthesis	Represents (.
RightParenthesis	Represents ).
Colon	Represents the inclusive range separator :.
All	Represents the primary selection keyword ALL.
None	Represents the primary selection keyword NONE.
And	Represents the binary intersection operator .AND..
Or	Represents the binary union operator .OR..
Not	Represents the prefix complement operator .NOT..
ByResidue	Represents the prefix residue-expansion operator .BYRES..
ByGroup	Represents the prefix group-expansion operator .BYGROUP..
Bonded	Represents the prefix direct-neighbor operator .BONDED..
Type	Represents selection by the PSF atom-name field.
Chemical	Represents selection by the PSF atom-type field.
SegmentIdentifier	Represents selection by the PSF segment identifier.
ResidueIdentifier	Represents selection by the PSF residue identifier.
ResidueName	Represents selection by the PSF residue name.
Atom	Represents a three-field segment, residue, and atom-name selection.
ByNumber	Represents selection by one-based atom number.