tree 2d138e91319dd8200814bbcf0576c5da5caa8ed2
parent 38c2a50d42e5243705ad7495da0c3a6cb9bbe40d
author River Riddle <riverriddle@google.com> 1572644862 -0700
committer A. Unique TensorFlower <gardener@tensorflow.org> 1572644896 -0700

Add DialectAsmParser/Printer classes to simplify dialect attribute and type parsing.

These classes are functionally similar to the OpAsmParser/Printer classes and provide hooks for parsing attributes/tokens/types/etc. This change merely sets up the base infrastructure and updates the parser hooks, followups will add hooks as needed to simplify existing handrolled dialect parsers.

This has various different benefits:
*) Attribute/Type parsing is much simpler to define.
*) Dialect attributes/types that contain other attributes/types can now use aliases.
*) It provides a 'spec' with which we may use in the future to auto-generate parsers/printers.
*) Error messages emitted by attribute/type parsers can provide character exact locations rather than "beginning of the string"

PiperOrigin-RevId: 278005322