kotlin 表达式引擎 - V2EX
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kotlin 表达式引擎

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  •   bootvue Jul 27, 2022 4415 views
    This topic created in 1404 days ago, the information mentioned may be changed or developed.
    字符串表达式 "s1 + ( s2 - s3 )" 集合 s1 s2 s3

    kotlin 中怎么让预定义的字符串作为表达式执行 实现类似 js 中 eval ( "表达式" )的效果 执行完返回集合类型的结果
    4 replies    2022-07-27 16:33:24 +08:00
    U2FSDGVK
        1
    U2FSDGVK  
       Jul 27, 2022
    这个问题我也查过一些,最后找到的是用 kotlin-script 运行字符串
    参考:
    https://stackoverflow.com/questions/56384889/run-kotlin-stored-as-a-string-is-giving-a-runtime-error
    https://stackoverflow.com/questions/49416321/kotlin-dynamically-compile-a-class-from-source-code-at-runtime
    实际用起来 kotlin-script 编译挺慢的
    Belmode
        3
    Belmode  
       Jul 27, 2022
    让字符串表达式生成临时 kts 文件,然后再用 kotlin 调用外部命令执行这个 kts ,读取返回结果。
    yazinnnn
        4
    yazinnnn  
       Jul 27, 2022
    https://github.com/Kotlin/kotlin-script-examples/blob/master/jvm/jsr223/jsr223.md

    resource/META-INF/services/javax.script.ScriptEngineFactory 中写入
    kotlin.script.experimental.jsr223.KotlinJsr223DefaultScriptEngineFactory

    https://gist.github.com/yazinnnn/9c7de3320c63f3f5bd5be2df6cc05665

    不知道你出于啥目的有这个需求, 如果只是学习的话, 不如直接启动一个 repl
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