dart-sdk/pkg/js_ast
Stephen Adams d15da7d900 dart2js: Capture typedef arguments once
The type Map<T, Foo<Set<T>>> contains one type variable referenced twice,
so there are two inputs into the HTypeInfoExpression instruction.

If Foo is a typedef, T can be reused, e.g.

    typedef E Foo<E>(E a, E b);

As the typedef is expanded (to Function(Set<T>, Set<T>) => Set<T>) it
should not consume additional types from the to-level input.  We
prevent this by capturing the types and using the captured type
expressions inside the typedef expansion.

TODO: We should make the type subexpression Foo<...> be a second
HTypeInfoExpression, with Set<T> as its input (a third
HTypeInfoExpression). This would share all the Set<T> subexpressions
instead of duplicating them. This would require HTypeInfoExpression
inputs to correspond to type variables AND typedefs.

BUG= https://github.com/dart-lang/sdk/issues/28749
R=efortuna@google.com

Review-Url: https://codereview.chromium.org/2812393003 .
2017-04-13 12:45:32 -07:00
..
lib dart2js: Capture typedef arguments once 2017-04-13 12:45:32 -07:00
test Run dartfmt on js_ast 2017-03-15 21:22:40 -07:00
LICENSE Move js_ast library to its own package under pkg 2015-02-25 01:27:01 +00:00
pubspec.yaml Move js_ast library to its own package under pkg 2015-02-25 01:27:01 +00:00
README.md Move js_ast library to its own package under pkg 2015-02-25 01:27:01 +00:00

js_ast

A library for creating JavaScript ASTs from templates.