Class WktShapeParser.State

The parse state.

Inheritance
System.Object
WktShapeParser.State
Inherited Members
System.Object.Equals(System.Object)
System.Object.Equals(System.Object, System.Object)
System.Object.GetHashCode()
System.Object.GetType()
System.Object.MemberwiseClone()
System.Object.ReferenceEquals(System.Object, System.Object)
System.Object.ToString()
Assembly: Spatial4n.dll
Syntax
[Serializable]
public class State

Constructors

Name Description
State(WktShapeParser, String)

Fields

Name Description
dimension

Dimensionality specifier (e.g. 'Z', or 'M') following a shape type name.
offset

Offset of the next char in rawString to be read.

rawString

Set in ParseIfSupported(String).

Properties

Name Description
Ctx
Eof

If the string is consumed, i.e. at end-of-file.
Parser

Methods

Name Description
NextDouble()

Reads in a double from the string. Parses digits with an optional decimal, sign, or exponent. NaN and Infinity are not supported. offset is advanced past whitespace.
NextExpect(Char)

Verifies that the current character is of the expected value. If the character is the expected value, then it is consumed and offset is advanced past whitespace.
NextIf(Char)

If the current character is expected, then offset is advanced after it and any subsequent whitespace. Otherwise, false is returned.
NextIfEmptyAndSkipZM()

Skips over a dimensionality token (e.g. 'Z' or 'M') if found, storing in dimension, and then looks for EMPTY, consuming that and whitespace.

  dimensionToken? 'EMPTY'?
NextIfWhitespace()

Moves offset to next non-whitespace character. Doesn't move if the offset is already at non-whitespace. There is very little reason for subclasses to call this because most other parsing methods call it.
NextSubShapeString()

Returns the next chunk of text till the next ',' or ')' (non-inclusive) or EOF. If a '(' is encountered, then it looks past its matching ')', taking care to handle nested matching parenthesis too. It's designed to be of use to subclasses that wish to get the entire subshape at the current position as a string so that it might be passed to other software that will parse it.

Example:

  OUTER(INNER(3, 5))

If this is called when offset is at the first character, then it will return this whole string. If called at the "I" then it will return "INNER(3, 5)". If called at "3", then it will return "3". In all cases, offset will be positioned at the next position following the returned substring.

NextWord()

Reads the word starting at the current character position. The word terminates once Spatial4n.Core.IO.WktShapeParser.State.IsIdentifierPartCharacter(System.Char) (which is identical to Java's Character.isJavaIdentifierPart(char)) returns false (or EOF). offset is advanced past whitespace.
SkipDouble()

Advances offset forward until it points to a character that isn't part of a number.
SkipNextDoubles()

Advances past as many doubles as there are, with intervening whitespace.

Extension Methods