feat: IDE支持 — workspace拆分、LSP服务器、VS Code扩展
**Workspace 拆分** - aster-core: 纯库,zero-dependency,包含 lexer/parser/ast/interpreter/error/analysis - aster: REPL 二进制,薄封装 aster-core - aster-lsp: LSP 语言服务器 **VS Code 扩展 (vscode-ext/)** - TextMate 语法高亮 (.ast 文件) - 语言配置 (注释切换、括号配对、自动缩进) - LSP 客户端 (extension.js) **LSP 服务端功能** - Diagnostics: 实时显示 lex/parse 错误红色波浪线 - Completion: 关键字 + 内置函数 + 用户定义符号补全 - Hover: 悬停显示变量/函数信息 - Signature Help: 函数参数提示 - Goto Definition: Ctrl+Click 跳转到声明处 - Find References: 查找所有引用位置 - Rename: F2 重命名符号 **新增 analysis 模块** - collect_symbols: AST 遍历收集符号 - find_declaration/find_all_references: Token 扫描定位声明和引用
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// for-in loop demo
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print("=== array ===")
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let arr = [10, 20, 30]
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for (x in arr) {
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print(x)
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}
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print("=== object keys + values ===")
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let obj = {name: "Aster", year: 2025}
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for (k in obj) {
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print(k + ": " + obj[k])
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}
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print("=== string chars ===")
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for (c in "Hi") {
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print(c)
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}
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print("=== break ===")
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for (x in [1, 2, 3, 4, 5]) {
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if (x == 3) { break }
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print(x)
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}
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