Lexilla API

Lexilla's own API is small: a few library-level functions to create lexers by name and list them, and the ILexer5 interface every lexer implements. The lexilla package exposes it as-is:

Lexilla (C++)	lexilla (Python)
CreateLexer(name)	create_lexer(name) -- name is a Language member or its string
GetLexerCount(), GetLexerName(index)	get_lexer_count(), get_lexer_name(index)
ILexer5	Lexer -- properties, word lists, named styles, sub-styles
SCLEX_* identifiers	LanguageIdentifier
SC_TYPE_* property types	PropertyType

The upstream reference is LexillaDoc.html. What each lexer does with its properties, keyword sets and styles is lexer-specific; ask the lexer itself:

from lexilla import Language, create_lexer

lexer = create_lexer(Language.CPP)
assert lexer is not None
print(lexer.property_names())          # one property name per line
print(lexer.describe_property("fold"))
print(lexer.describe_word_list_sets())  # what each setKeyWords() set is for
for style in range(lexer.named_styles()):
    print(style, lexer.name_of_style(style), lexer.description_of_style(style))

Once a lexer is handed to an editor (set_lexer(), or SCI_SETILEXER), it's configured through the editor's Scintilla messages instead -- setProperty(), setKeyWords(), styleSetFore(), ... -- see the Scintilla API's Styling & Lexing section and the lexilla highlighting example.