Releases: Beluga-lang/Beluga
Releases · Beluga-lang/Beluga
1.1.2
CHANGES:
Added
- Added C. Sano, R. Kavanagh and B. Pientka's artifact for "Mechanizing Session-Types Using a Structural View" as a case study (#271).
Fixed
- Support postponed fixity pragmas in modules.
- The hole
_
in the LF term\x._
is parsed as a wildcard instead of as an identifier. - Shadowed bindings in a module are no longer brought into scope when the module is opened.
- Support postponed fixity pragmas in Harpoon sessions.
1.1.1
1.1
CHANGES:
Added
- Parsing and disambiguation of non-normal expressions is supported.
- Parsing of prefix, infix and postfix operators is supported for computation-level type family constants and constructors, as well as type-annotated programs and values.
- Improved error-reporting with printing of source code.
- Pretty-printing of Beluga signatures to HTML now supports hyperlinks for constants to their declaration site.
Changed
- Substitution meta-objects need to be prefixed by
$
. That is, the plain substitution[g |- $S]
must be written as$[g |- $S]
, and the renaming substitution[g |-# $S]
must be written as$[g |-# $S]
. - Substitution meta-types need to be prefixed by
$
. That is, the plain substitution meta-type[g |- h]
must be written as$[g |- h]
, and the renaming substitution meta-type[g |-# h]
must be written as$[g |-# h]
. - Parameter types need to be prefixed by
#
. That is,{#p : [g |- nat]}
must be written as{#p : #[g |- nat]}
. - Identifier overloading is disallowed. This means that term-level constants may not be overloaded with type-level constants.
- Freezing of type family declarations is more strict. This means that old-style LF term-level constants cannot be added to type families after any declaration other than old-style LF type or term-level constant declarations.
- Destructors for coinductive type families use postfix notation, like projections or field accesses (i.e.,
s .hd
,s .tl
). This applies both in computation-level patterns and expressions. - Namespaces are now fully supported in Beluga signatures.
Fixed
- Interactive Harpoon sessions are now local to the referencing environment in which they are declared.
- Lexing of nested delimited comments
%{{
,}}%
and%{
,}%
is fixed. --open
pragmas behave like OCaml'sopen
directive, whereby declarations introduced by--open
are not re-exported, and not copy/pasted textually.
Removed
- Harpoon sequencing of REPL commands with
;
is no longer supported. - Context variable arrow types
[ctx] → [⊢ unit]
are no longer supported.