v0.5.4

[v0.5.4] - 2025-07-30

🎯 Major New Feature: Function Pointer Arrays & Lambda Closures

🚀 Core Features

• Function Pointer Arrays

  • Declaration: operations : []*fn(int, int) : int;
  • Initialization: operations = [add, subtract, multiply, divide];
  • Array access: firstOp = operations[0];
  • Direct invocation: result = operations[0](10, 5);
  • Lambda arrays: lambdas = [((a,b)=>a+b), ((a,b)=>a-b)];

• Lambda Closures

  • Automatic variable capture
  • Smart variable analysis
  • Multi-variable capture
  • Scope priority (parameters > closures)
  • Proper closure lifecycle management

• Compound Expressions

  • Array-indexed calls: array[index](args)
  • Function pointer call expressions
  • Nested expression chains

Technical Implementation

• AST Extension: Added ArrayAccess and FunctionPointerCall
• Closure System: closure_env field for captured variables
• Variable Analysis: analyze_lambda_variables method
• Type Checking: Full array/function pointer type matching
• Expression Parsing: Recursive compound expression parsing

Example Code

// Function pointer array
fn add(a:int, b:int):int { return a+b; };
fn subtract(a:int, b:int):int { return a-b; };

operations : []*fn(int,int):int = [add, subtract];
result1 = operations[0](10,5); // 15
result2 = operations[1](10,5); // 5

// Lambda array
lambdas : []*fn(int,int):int = [
    ((a,b)=>a+b),
    ((a,b)=>a*b),
    ((a,b)=>a*a + b*b)
];
result3 = lambdas[2](3,4); // 25

// Lambda closures
multiplier:int = 3;
base:int = 10;

multiply:*fn(int):int = (x=>x*multiplier);
calculate:*fn(int):int = (x=>x+base+multiplier);

result4 = multiply(5); // 15
result5 = calculate(7); // 20

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[v0.5.4] - 2025-07-30

🎯 重大新功能：函数指针数组与Lambda闭包

🚀 核心特性

• 函数指针数组

  • 声明：operations : []*fn(int, int) : int;
  • 初始化：operations = [add, subtract, multiply, divide];
  • 数组访问：firstOp = operations[0];
  • 直接调用：result = operations[0](10, 5);
  • Lambda数组：lambdas = [((a,b)=>a+b), ((a,b)=>a-b)];

• Lambda闭包

  • 自动变量捕获
  • 智能变量分析
  • 多变量捕获
  • 作用域优先级（参数 > 闭包）
  • 正确的闭包生命周期管理

• 复合表达式

  • 数组索引调用：array[index](args)
  • 函数指针调用表达式
  • 嵌套表达式链

技术实现

• AST扩展：新增ArrayAccess和FunctionPointerCall
• 闭包系统：closure_env存储捕获变量
• 变量分析：analyze_lambda_variables方法
• 类型检查：完整数组/函数指针类型匹配
• 表达式解析：递归复合表达式解析

示例代码

// 函数指针数组
fn add(a:int, b:int):int { return a+b; };
fn subtract(a:int, b:int):int { return a-b; };

operations : []*fn(int,int):int = [add, subtract];
result1 = operations[0](10,5); // 15
result2 = operations[1](10,5); // 5

// Lambda数组
lambdas : []*fn(int,int):int = [
    ((a,b)=>a+b),
    ((a,b)=>a*b),
    ((a,b)=>a*a + b*b)
];
result3 = lambdas[2](3,4); // 25

// Lambda闭包
multiplier:int = 3;
base:int = 10;

multiply:*fn(int):int = (x=>x*multiplier);
calculate:*fn(int):int = (x=>x+base+multiplier);

result4 = multiply(5); // 15
result5 = calculate(7); // 20

Full Changelog: CodeNothingCommunity/CodeNothing@v0.5.3...v0.5.4