Wolfram Language Paclet Repository

Community-contributed installable additions to the Wolfram Language

Primary Navigation

    • Cloud & Deployment
    • Core Language & Structure
    • Data Manipulation & Analysis
    • Engineering Data & Computation
    • External Interfaces & Connections
    • Financial Data & Computation
    • Geographic Data & Computation
    • Geometry
    • Graphs & Networks
    • Higher Mathematical Computation
    • Images
    • Knowledge Representation & Natural Language
    • Machine Learning
    • Notebook Documents & Presentation
    • Scientific and Medical Data & Computation
    • Social, Cultural & Linguistic Data
    • Strings & Text
    • Symbolic & Numeric Computation
    • System Operation & Setup
    • Time-Related Computation
    • User Interface Construction
    • Visualization & Graphics
    • Random Paclet
    • Alphabetical List
  • Using Paclets
    • Get Started
    • Download Definition Notebook
  • Learn More about Wolfram Language

Parser

Tutorials

  • Building Language Front-Ends
  • Inside CodeAnalysis - How CodeStructure Parses C
  • Design and Compilation Strategy
  • Implementing the LaTeX Math Parser
  • MaTeX Comparison Showcase
  • The Parser Landscape - a Survey of What Exists Today
  • The Parser Zoo - language front-ends over a shared algebra
  • Parsing BNF Grammars (and bootstrapping a TPTP parser)
  • Parsing GrammarRules Locally
  • A Markdown Inline Parser in Parser Combinators
  • ParsingOpenQASM
  • Parsing TPTP, Auto-Generated from the Published BNF
  • PrattVsPEG
  • The Wolfram Box Typesetting Reference

Guides

  • Parsing in the Wolfram Language

Symbols

  • ASTAddSource
  • ASTAlgebra
  • ASTContainer
  • ASTLeafQ
  • ASTNodeQ
  • ASTStripSource
  • BinaryNode
  • BrainfuckAST
  • BrainfuckGrammar
  • BrainfuckRun
  • BrainfuckSemantic
  • CalculatorAST
  • CalculatorEval
  • CalculatorGrammar
  • CalculatorSemantic
  • CallNode
  • ContainerNode
  • EBNFParse
  • EBNFRules
  • ErrorNode
  • ExportLaTeX
  • GroupNode
  • InfixNode
  • JSONAST
  • JSONGrammar
  • JSONImport
  • JSONSemantic
  • LambdaAST
  • LambdaEval
  • LambdaGrammar
  • LambdaSemantic
  • LaTeXMathParse
  • LaTeXMathParser
  • LaTeXMathStyle
  • LeafNode
  • LispAST
  • LispGrammar
  • LispRead
  • LispSemantic
  • LispSymbol
  • MarkdownInlineParse
  • MarkdownInlineParser
  • MarkdownParse
  • MarkdownParser
  • ParseAction
  • ParseBetween
  • ParseChainLeft
  • ParseChainRight
  • ParseCharacter
  • ParseChoiceLongest
  • ParseChoice
  • ParseFail
  • ParseLiteral
  • ParseLookahead
  • ParseMany
  • Parse
  • ParseNotFollowedBy
  • ParseOperatorTable
  • ParseOptional
  • ParsePartial
  • ParsePosition
  • ParserCombinator
  • ParserCombinatorQ
  • ParserCompile
  • ParseRecursive
  • ParseRegex
  • ParseSepBy1
  • ParseSepBy
  • ParseSequence
  • ParseSome
  • ParseSucceed
  • ParseTry
  • PostfixNode
  • PrefixNode
  • RecCell
  • RecRef
  • SetRec
  • SpannedToken
  • TernaryNode
  • ToCodeParser
  • TPTPExport
  • TPTPImport

Overviews

  • WolframParser
Wolfram`Parser`
ParseCharacter
​
ParseCharacter
[pat]
returns the
ParserCombinator
that matches a single character against the character-class pattern
pat
, consuming and returning that character.
​
Details and Options
▪
pat
may be a built-in character-class atom (
LetterCharacter
,
DigitCharacter
,
WhitespaceCharacter
,
WordCharacter
,
HexadecimalCharacter
,
PunctuationCharacter
), a
CharacterRange
[$a$,$b$]
, an
Alternatives
of these, or a literal one-character
String
.
▪
Result: the matched character as a
String
of length one.
▪
The same combinator works over a token-list input (not just a string): it matches a single token against
pat
and returns it, so the character classes double as token predicates.
​
Examples  
(5)
Basic Examples  
(1)
A digit:
In[1]:=
ParseCharacter
[DigitCharacter]
Out[1]=
ParserCombinator
Type: Character
Arity: 1
Compiled: False

Apply it:
In[2]:=
Parse

ParseCharacter
[DigitCharacter],"5"
Out[2]=
5
A letter:
In[3]:=
Parse

ParseCharacter
[LetterCharacter],"x"
Out[3]=
x
Scope  
(1)

Properties & Relations  
(1)

Possible Issues  
(1)

Neat Examples  
(1)

SeeAlso
ParseLiteral
 
▪
ParserCombinator
 
▪
LetterCharacter
 
▪
DigitCharacter
 
▪
CharacterRange
RelatedGuides
▪
WolframParser
""

© 2026 Wolfram. All rights reserved.

  • Legal & Privacy Policy
  • Contact Us
  • WolframAlpha.com
  • WolframCloud.com