Phase 2: Function Definition System

Objective

Implement ES6/JavaScript-like function definition syntax and storage.

Desired Syntax

function greet(name) {
    return "Hello " + name;
}

function add(a, b) {
    return a + b;
}

Components to Build

1. Function Parser

  • File: src/xmd_processor/parse_function_definition/parse_function_definition.c
  • Purpose: Parse function definition syntax
  • Input: String containing function definition
  • Output: Function metadata structure

2. Function Structure

  • File: src/function/function_definition/function_definition.c
  • Purpose: Store function metadata (name, params, body)
  • Fields: name, parameter_list, body_content, local_variables

3. Function Registry

  • File: src/function/function_registry/function_registry.c
  • Purpose: Store and retrieve user-defined functions
  • Operations: register, lookup, list, clear

4. Parameter Parser

  • File: src/function/parse_parameters/parse_parameters.c
  • Purpose: Parse function parameter lists
  • Handle: (name), (a, b), (x, y, z)

Function Definition Directive

  • Syntax: ``
  • Processor: src/xmd_processor/process_function_def/process_function_def.c
  • Integration: Add to process_directive.c

Data Structures

typedef struct {
    char* name;
    char** parameters;
    int parameter_count;
    char* body;
    store* local_scope;
} function_definition;

typedef struct {
    function_definition** functions;
    int function_count;
    int capacity;
} function_registry;

Success Criteria

  • Functions can be defined in XMD
  • Function definitions stored in registry
  • Parameter parsing works correctly
  • No memory leaks in function storage

Dependencies

  • Phase 1 must be completed first
  • Variable system (already exists)
  • String processing utilities