1######################################### 2feaLib: Read/write OpenType feature files 3######################################### 4 5fontTools' ``feaLib`` allows for the creation and parsing of Adobe 6Font Development Kit for OpenType feature (``.fea``) files. The syntax 7of these files is described `here <https://adobe-type-tools.github.io/afdko/OpenTypeFeatureFileSpecification.html>`_. 8 9The :class:`fontTools.feaLib.parser.Parser` class can be used to parse files 10into an abstract syntax tree, and from there the 11:class:`fontTools.feaLib.builder.Builder` class can add features to an existing 12font file. You can inspect the parsed syntax tree, walk the tree and do clever 13things with it, and also generate your own feature files programmatically, by 14using the classes in the :mod:`fontTools.feaLib.ast` module. 15 16Parsing 17------- 18 19.. autoclass:: fontTools.feaLib.parser.Parser 20 :members: parse 21 :member-order: bysource 22 23Building 24--------- 25 26.. automodule:: fontTools.feaLib.builder 27 :members: addOpenTypeFeatures, addOpenTypeFeaturesFromString 28 29Generation/Interrogation 30------------------------ 31 32.. _`glyph-containing object`: 33.. _`glyph-containing objects`: 34 35In the below, a **glyph-containing object** is an object of one of the following 36classes: :class:`GlyphName`, :class:`GlyphClass`, :class:`GlyphClassName`. 37 38.. automodule:: fontTools.feaLib.ast 39 :member-order: bysource 40 :members: 41