在 /etc/profile 里添加了 #guide

export RUSTUP_DIST_SERVER=https://mirrors.ustc.edu.cn/rust-static
export RUSTUP_UPDATE_ROOT=https://mirrors.ustc.edu.cn/rust-static/rustup

然后再在 .bashrc .zshrc 里添加（如果自动无效的话）

export PATH=$PATH:$HOME/.cargo/bin

再执行

curl https://sh.rustup.rs -sSf | sh

即可获得现烤 Rust toolchain 一份 🍰

no_core 的时候，经常出现 libc 多了一个版本导致无法正常编译的情况，删除 commit 版本旧的那个即可

#PL #code #guide #daily #scheme

关于 Lice lice-lang/lice 解释器的分析

我们只看解释器实现，不看测试和文档什么的，目标为理解官方 Lice 解释器实现和汲取精华、以及提出充分利用 Kotlin 特性的建议

org/lice/api/scripting/*

javax.script 的 API 接口

我们可以看到，LiceScriptEngineFactory 类提供以下信息

LanguageVersion EngineVersion Extensions MimeTypes LanguageName Names EngineName

ScriptEngine()
OutputStatement(toDisplayString)
Program(statementsCode)

MethodCallSyntax(obj: String, mid: String, vararg args: String)

Parameter(paramString)
"javax.script.engine_version", "javax.script.language_version"
"javax.script.engine", "javax.script.language", "javax.script.name"

而 LiceScriptEngine 做这些

class LiceScriptEngine : JavaxScriptEngine
  private var context: LiceContext = LiceContext()
  getContext()
  setContext(context)
    setContextIfIsLiceContext()

  getFactory()

  eval(scriptString, context) = eval(script, context.bindings)
  eval(script: String) = eval(script, context.bindings)

  eval(reader: Reader) = eval(reader.readText(), context.bindings)
  eval(reader: Reader, n: Bindings) = eval(reader.readText(), n)
  eval(reader: Reader, context: ScriptContext)

  eval(script: String, n: Bindings)

  get(key: String?): Any? = context.bindings[key]
  put(key: String, value: Any?)

  createBindings() = SymbolList()
  getBindings(scope: Int) = context.bindings
  setBindings(bindings: Bindings?, scope: Int)

并且 LiceContext 做这些

bindings: SymbolList
reader: Reader
writer: Writer
errorWriter: Writer

getAttribute(name: String)
getAttribute(name: String, scope: Int)
setAttribute(name: String, value: Any?)
setAttribute(name: String, value: Any?, scope: Int)
removeAttribute(name: String) = bindings.removeVariable(name)
removeAttribute(name: String, scope: Int)

getScopes(): MutableList<Int>
getAttributesScope(name: String?): Int

getBindings(scope: Int)
setBindings(bindings: Bindings, scope: Int)

然后是 org/lice/core/*

AbstractBindings

variables: MutableMap<String, Any?>
provideFunctionWithMeta(name: String, node: ProvidedFuncWithMeta)
provideFunction
defineFunction
getVariable
defineVariable
isVariableDefined
removeVariable

containsValue
clear
putAll(from: Map<out String, Any>)
containsKey
get
put
isEmpty
remove
var size = fun ...
entries: MutableSet<LiceEntry>
keys
values

#guide #project #scheme https://tttttt.me/dsuses/2493 "Lime 升级的 HeapParser 解释"