grammars
This library provides Definite Clause Grammars (DCGs) for common parsing tasks. The DCGs support parsing both lists of characters (aka chars) and lists of character codes (aka codes).
Currently, three groups of DCGs are available, each defined in its own file:
blanks (
blank_grammars.lgt
)numbers (
number_grammars.lgt
)IP addresses (
ip_grammars.lgt
; depends onnumber_grammars.lgt
)
API documentation
Open the ../../docs/library_index.html#grammars link in a web browser.
Loading
To load all entities in this library, load the loader.lgt
file:
| ?- logtalk_load(grammars(loader)).
Testing
Minimal tests for this library predicates can be run by loading the
tester.lgt
file:
| ?- logtalk_load(grammars(tester)).
Usage
The library uses parametric objects where the single parameter can be
either chars
or codes
. The parameter must be bound when using
the DCGs. For example, when using implicit message sending:
:- uses(blank_grammars(chars), [
white_spaces//0, new_lines//0
]).