GrammarToken [form]
is a grammar rules pattern object that represents any input of the specified form.
GrammarToken
Listing of GrammarToken Types »GrammarToken [form]
is a grammar rules pattern object that represents any input of the specified form.
Details
- GrammarToken is used in GrammarRules , along with FixedOrder , AnyOrder , etc.
- GrammarToken works with any form supported by Interpreter .
- New forms can be introduced by giving rules for GrammarToken ["string"] in GrammarRules .
Examples
open all close allBasic Examples (2)
Deploy a grammar that makes use of a built-in GrammarToken :
Apply the grammar to an input:
Deploy a grammar that defines and uses an "Appliance" token:
Apply the grammar to an input:
Scope (1)
A custom GrammarToken can be used before and after its definition in the GrammarRules :
Applications (1)
New tokens can be used to build up complicated expressions, e.g. to deploy a simple calculator:
Apply the calculator grammar and actions:
Properties & Relations (1)
If a definition is given for a built-in GrammarToken , the given definition is used, not the built-in one:
Apply the new definition to an input string:
The replacement for GrammarToken ["City" ] prevents use of the usual one by this grammar:
See Also
Related Guides
History
Text
Wolfram Research (2014), GrammarToken, Wolfram Language function, https://reference.wolfram.com/language/ref/GrammarToken.html.
CMS
Wolfram Language. 2014. "GrammarToken." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/GrammarToken.html.
APA
Wolfram Language. (2014). GrammarToken. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/GrammarToken.html
BibTeX
@misc{reference.wolfram_2025_grammartoken, author="Wolfram Research", title="{GrammarToken}", year="2014", howpublished="\url{https://reference.wolfram.com/language/ref/GrammarToken.html}", note=[Accessed: 17-November-2025]}
BibLaTeX
@online{reference.wolfram_2025_grammartoken, organization={Wolfram Research}, title={GrammarToken}, year={2014}, url={https://reference.wolfram.com/language/ref/GrammarToken.html}, note=[Accessed: 17-November-2025]}