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implementation_status.md

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CURSED Language Implementation Status

Overview

This document provides a detailed status report of the CURSED programming language implementation, comparing the specifications in the specs/ directory with the current implementation in the src/ directory.

Lexical Elements Status

  • Tokens and Keywords: ✅ Fully implemented in src/lexer/lexer.rs

    • All Gen Z slang keywords properly defined and recognized
    • Operators, delimiters, identifiers implemented
    • Integer, floating-point, string, boolean literals implemented
    • Byte and rune (character) literals implemented with full Unicode support
    • Keywords including vibe (package), yeet (import), slay (function), and others

  • Comments: ✅ Fully implemented

    • Line comments fr fr properly parsed
    • Block comments no cap ... on god properly parsed
    • Proper nesting and error handling for unterminated comments

Grammar Elements Status

  • Program Structure: ✅ Implemented

    • Package clauses (vibe) implemented with proper scope handling
    • Import declarations (yeet) implemented with alias support
    • Top-level declarations correctly handled

  • Declarations and Scope: ✅ Mostly implemented

    • Constants (facts) implemented with correct immutability semantics
    • Variables (sus) implemented with type annotations
    • Type declarations (be_like) implemented with support for structs and interfaces
    • Function declarations (slay) implemented with full parameter/return type support
    • Method declarations implemented for receiver types

  • Statements: ✅ Fully implemented

    • Simple statements (expressions, assignments) implemented
    • Block statements implemented with proper scoping
    • If-else statements (lowkey/highkey) with optional parentheses
    • Switch statements (vibe_check) with multiple cases support
    • For loops (bestie) implemented in all three forms (C-style, condition-only, infinite)
    • While loops (periodt) with condition expressions
    • Return statements (yolo) with optional return values
    • Break statements (ghosted) for loop termination
    • Continue statements (simp) for loop continuation
    • Defer statements (later) for resource management

  • Expressions: ✅ Fully implemented

    • Literals (int, float, string, boolean, byte, rune) with proper value handling
    • Identifiers with scope handling
    • Prefix expressions (!, -) implemented
    • Infix expressions with proper operator precedence
    • Call expressions with arguments handling
    • Index expressions for arrays and slices
    • Property access expressions with dot notation
    • Assignment expressions
    • Type conversion expressions
    • Array literals (crew) and hash literals (tea)
    • Struct instantiation expressions

Type System Status

  • Basic Types: ✅ Fully implemented in AST, parser, and JIT

    • lit (boolean): Implemented with based (true) and cap (false) - tested in JIT
    • smol, mid, normie, thicc (integers): Implemented with correct sizes - tested in JIT
    • snack, meal (floats): Implemented with float32/float64 equivalents - tested in JIT
    • tea (string): Implemented with full string support - tested in JIT
    • sip (character): Implemented with Unicode code point support - tested in JIT
    • byte and rune: Implemented with proper literal syntax - tested in JIT

  • Composite Types: 🟡 Partially implemented

    • Arrays: Implemented with literals and indexing
    • Slices: Basic implementation in place
    • Maps (tea[K]V): AST defined with hash literal support
    • Structs (squad): Fully implemented with fields and methods
    • Interfaces (collab): AST defined with method signatures
    • Pointers (@T): ✅ Fully implemented with support for pointer types, dereferencing and address-of operations
    • Functions: Implemented with first-class function support
    • Channels (dm): Fully implemented with buffers, blocking/non-blocking operations, and closing

  • Type Declarations: ✅ Implemented

    • Structure definitions with fields and proper scoping
    • Interface definitions with method signatures
    • Field type annotations with proper type checking setup

  • Generics: ✅ Fully Implemented

    • Generic type parameters parsing implemented with proper syntax [T] and [A, B]
    • Type parameter declaration syntax working for structs and functions
    • Generic instantiation parser support including nested generics
    • Type arguments for parameterized types with full AST representation
    • Type checker with support for generics and type parameter substitution
    • Generic type instantiation framework with proper resolution
    • Code generation for generic types and functions through monomorphization
    • Support for multiple type parameters in all constructs
    • Nested generic types supported (e.g., Box[Pair[A, B]])
    • Comprehensive test coverage for generic functions and types

Concurrency Status

  • Goroutines (stan): ✅ Full implementation

    • AST nodes and parsing for goroutine expressions fully implemented
    • Thread-safe runtime with proper concurrent execution using Rust threads
    • Thread-safety issues addressed with Arc and Mutex replacements for Rc and RefCell
    • Proper synchronization between threads and main execution
    • Integration tests for goroutines demonstrating true concurrency
    • Channel communication between goroutines fully operational

  • Channels (dm): ✅ Fully implemented

    • AST nodes defined for channel types, send, and receive operations
    • Full runtime support for channel operations using FFI functions
    • Buffered channels with capacity support implemented
    • Proper blocking and non-blocking send/receive operations implemented
    • Channel closing operations added with proper error handling
    • JIT execution support for all channel operations
    • Full test coverage for channel operations

Memory Management Status

  • Garbage Collection: 🟡 Partially implemented
    • memory module exists with basic structures
    • Memory reference tracking through memory_reference.rs
    • No comprehensive garbage collection algorithm visible
    • Likely relying on Rust's memory management for bootstrap compiler

Code Generation Status

  • LLVM IR Generation: ✅ Implemented
    • LLVM code generator exists in src/codegen/llvm.rs
    • JIT execution capability implemented and functional
    • Support for generating basic control structures
    • Function calling conventions implemented
    • Basic built-in types code generation working
    • Proper error handling for code generation failures
    • LLVM 17 migration in progress with updated API calls for builder methods

Runtime and Standard Library Status

  • Standard Library Implementation: 🔴 Minimal implementation

    • Basic I/O functions implemented in vibez package
    • String manipulation in stringz package
    • OS interaction through vibe_life package
    • Missing many standard library components from specification
    • Implementations likely thin wrappers around host language functions

  • Runtime Support: 🟡 Partially implemented

    • Basic runtime structures present in core module
    • Object representation for runtime values
    • Symbol tables and scoping mechanisms
    • Missing advanced features like concurrent execution

Bootstrap Compiler Status

  • Stage 0: Bootstrap Environment: ✅ Fully implemented

    • Complete project structure established
    • Build system setup with Cargo and make
    • Lexer and parser fully operational with error handling
    • AST representation complete with all language constructs
    • Code generation framework established with LLVM binding

  • Stage 1: Minimal Bootstrap Compiler: 🟡 Mostly implemented

    • Core language features fully implemented
    • Basic type system working with proper type checking
    • Control structures fully operational
    • Module system basics working with imports
    • Basic I/O capabilities through standard library
    • Missing some advanced language features

  • Stage 2: Full Compiler in CURSED: 🔴 Not implemented

    • Self-hosting capability not evident in codebase
    • No CURSED implementation of the compiler visible
    • Infrastructure for this stage not yet established

  • Stage 3: Self-Compiled Compiler: 🔴 Not implemented

    • Depends on Stage 2 completion
    • No visible progress on this stage

Testing Status

  • Unit Tests: ✅ Well implemented

    • Lexer has comprehensive tests including property-based tests
    • Parser has tests for major language features and edge cases
    • AST node tests with proper validation
    • Test coverage appears good for implemented components

  • Integration Tests: 🟡 Partially implemented

    • JIT integration tests in tests/jit_integration_tests.rs
    • Test files for various language features in tests/*.csd
    • Testing of generics and core language features
    • Some test infrastructure like run_jit_tests.sh

  • Example Programs: ✅ Implemented

    • Multiple example programs including:
      • Fibonacci sequence calculation
      • FizzBuzz implementation
      • Hello world examples
      • String manipulation demos
      • Web server example (structure defined)

Summary

The CURSED language implementation is solidly in Stage 1 (Minimal Bootstrap Compiler) with comprehensive lexer and parser implementations. The compiler can parse CURSED code into AST and generate LLVM IR for execution. Core language features including control flow, functions, and basic types are fully implemented. The type system is well-defined with support for basic and composite types, with generics now fully implemented and tested.

Advanced features like concurrency have been fully implemented with robust channel support and goroutines, while comprehensive garbage collection and a complete standard library are still in progress. There is no evidence of progress toward Stage 2 (self-hosting) yet.

The implementation follows the specifications closely for syntax and language features, with appropriate AST nodes and parsing logic for all described language elements. The bootstrap compiler is functional for most CURSED programs and is currently being upgraded to support LLVM 17.