grammar:
- Improve specification of `Path`
- Add `Use` and `UseTree` rules
- Add `Use` as a variant of ItemKind
cl-token:
- Add new keywords `use` and `as`
cl-ast:
- Add nodes for Use and UseTree
- Add new ItemKind for Use
- Implement traversal in Visit and Fold
cl-interpret:
- Mark ItemKind::Use with a todo
cl-parser:
- Update to match grammar
cl-typeck:
- Update to match changes in AST
- Mark UseTrees as NameCollectable and TypeResolvable, but leave as todos
- Made infallible rules infallible
- Don't double-check keywords where keywords are required.
- Of course, this change means rules aren't self-contained
- Rename the `Call` precedence level
- Made member-access operators left-associative
- Removed the useless `Nothing` error type. :(
WARNING: The type checker is still a MAJOR work in progress. You'll be unable to ignore the stringly-typed error handling, effort duplication, and general poor code quality all around. However, this makes leaps and bounds toward a functional, if primitive, type checker.
Definitions now borrow their data from the AST, reducing needless copies.
- This unfortunately means the REPL has to keep around old ASTs, but... Eh. Probably have to keep those around anyway.
The "char" primitive type has been added. Semantics TBD.
Modules definition, type_kind, and value_kind have been consolidated into one.
Project now keeps track of the set of unnamed (anonymous) types (i.e. tuples, function pointers, references) and will yield them freely.
- Project can now also evaluate arbitrary type expressions via the EvaluableTypeExpression trait.
The NameCollector has been replaced with trait NameCollectable.
- This pass visits each node in the AST which can have an item declaration inside it, and constructs an unevaluated module tree.
The TypeResolver has been replaced with trait TypeResolvable and the function resolve()
- This pass visits each *Def* in the project, and attempts to derive all subtypes.
- It's important to note that for Items, unlike EvaluableTypeExpression, the ID passed into resolve_type is the ID of `self`, not of the parent!
typeck.rs:
- The Conlang "standard library" is included in the binary
- There's a main menu now! Type "help" for options.
- Queries have been upgraded from paths to full type expressions!
- Querying doesn't currently trigger resolution, but it could!
cl-token:
- Minimize data redundancy by consolidating TokenKind::Literal; TokenData::{String, Identifier}
- Rename Op to Punct
cl-ast:
- Remove ExprKind::{Member, Call} in favor of making them
'binary' operators
- Consolidate boxes (TODO: consolidate more boxes)
- Remove repetition vecs in favor of boxes (this may come with performance tradeoffs!)
cl-lexer:
- Reflect changes from cl-token
cl-interpret, cl-repl/src/examples:
- Reflect changes from cl-ast
cl-parser:
- Switch to Pratt parsing for expressions
- TODO: Code cleanup
- TODO: Use total ordering for Precedence instead of binding powers (that's what the binding powers are there for anyway)
- Switch functional parsers to take Punct instead of TokenKind
- It's not like we need a `for`-separated list
- Remove `binary` macro. No longer needed with precedence climbing.
- Repurpose `operator` macro to produce both the operator and the respective Precedence
- Remove several of the smaller parser functions, since they've been consolidated into the larger `exprkind`
