This commit introduces fundamental changes to Myc's language structure
to enhance type safety and scoping clarity.
Key changes include:
- Introducing local scopes for `do` blocks.
- Separating statements (`def`, `assign`) from expressions, where
statements now have no return value and are only allowed within
blocks.
- A block now consists of multiple statements followed by a single final
expression.
- Stricter validation rules are enforced, such as disallowing
redefinition of local symbols in the same scope while allowing
shadowing of outer symbols.
- Compiler errors are generated for statements used in expression
contexts.
The implementation involved modifications to the AST, parser, binder
(scope-stack), and various compiler passes, along with VM runtime
optimizations.
The `Parameter` kind in `UntypedKind` was only used for identifiers that
were being declared or referenced. This commit renames it to
`Identifier` and updates all the necessary code to reflect this change.
This simplifies the AST and makes it more consistent.
Additionally, a new macro `repeat` has been added to
`src/ast/system.myc`.
This commit updates the benchmark and repeat counts for various example
files. These changes reflect potential performance improvements or
variations observed during testing.
These changes update the benchmark numbers and repeat counts in the
example files. The benchmark results have slightly varied, and these
updates reflect the most recent measurements.
This commit updates the benchmark results for various examples. The
benchmark times and repeat counts have been adjusted to reflect current
performance characteristics.
This commit introduces a new prelude file that defines the `while` macro
and registers it during environment bootstrapping. The `again` macro has
been updated to accept multiple arguments for its recursive call, and
several examples have been adjusted to reflect this change.
Additionally, the `MacroRegistry` in the compiler is now cloneable and
can be moved out of the `MacroExpander`.
Add a new Markdown document detailing the AST node structure as it
evolves through the compiler's different stages. This includes a diagram
illustrating the data flow and relationships between the generic
`Node<K, T>` structure and its specialized forms (`UntypedNode`,
`BoundNode`, `TypedNode`, `AnalyzedNode`). The document explains the
`kind` and `ty` payloads for each stage and their significance.
Also removes a deleted file related to a previous optimization plan and
adds new files for future optimization plans.
Michael Schimmel