Check out the official documentation here.
Note: Version 1.6.1 had a critical division by zero error that wasn't caught.
Package Extensions
Cpyte supports a package extension system that allows packages to extend the compiler with custom keywords, operators, and compiler hooks. Packages can provide:
- Custom Keywords: Add new language keywords via
package.json - Custom Operators: Define new operators for syntax extensions
- Compiler Hooks: Extend lexing, parsing, semantic analysis, and code generation
- Runtime Extensions: Add runtime code and libraries
Package Structure
Packages are stored in .cpm/modules/package_name/version/ and can include:
package.json- Extension manifest declaring capabilitiesparser_hooks.py- Custom syntax extensionssemantic_hooks.py- Custom type checking and analysis rulescodegen_hooks.py- Custom LLVM IR generationruntime_hooks.py- Runtime code and libraries*.cpy- Main package entry point*.ll- Prebuilt LLVM IR
Example Package
See examples/example_package/ for a complete example package with:
- Custom keywords:
async,await,defer - Custom operator:
~~ - Parser, semantic, codegen, and runtime hooks
Using Extension Packages
import @package_name
# Use custom keywords and syntax from the package
async def my_function() -> Promise:
# Custom syntax
defer cleanup()
return result
Examples
You'll find comprehensive examples in the examples/ directory that cover C imports, header imports, 64-bit support, and standard library usage:
| File | Description |
|---|---|
examples/c_import_example.cpy |
Importing and calling functions from C source files |
examples/example_math.c |
C source with math utility functions for the C import example |
examples/h_import_example.cpy |
Importing functions declared in C header files |
examples/example_functions.h / example_functions.c |
Header and implementation for the H import example |
examples/64bit_example.cpy |
Comprehensive int64/uint64 arithmetic, hex literals, type promotion |
examples/c_library_imports.cpy |
Using built-in C libraries (stdio, stdlib, math, string, time) |
examples/mixed_features.cpy |
Combines C imports, H imports, 64-bit, structs, pointers, linked lists |
examples/mixed_helpers.c / mixed_helpers.h |
Supporting C/header files for the mixed features example |
examples/test.cpy |
macOS event tap example that intercepts keyboard events using ApplicationServices framework |
examples/example_package/ |
Example package demonstrating extension capabilities with custom keywords, operators, and compiler hooks |
You can also import .cpy files — the examples show how to use import "other.cpy" to bring in public functions and structs from other Cpy files.
Run any example with:
python source/mainpie.py --jit examples/<filename>.cpy
Note
Cpyte is experimental software. The compiler is continuously tested with fuzzing, and we're still discovering and fixing correctness bugs. While many programs compile and run correctly, I can't make any guarantees about correctness or stability.
If you decide to use Cpyte, always use the latest version — older versions have bugs that are pretty easy to run into.
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