java - 从Java程序编译scala代码时出现异常

Question

我有以下代码在运行时在 Java 程序中编译 scala 代码

    Settings s = new Settings();
    Global g = new Global(s);
    Global.Run run = g.new Run();
    List<String> files = new LinkedList<>();

    files.add("src/main/java/scala/rules/ScalaRuleBasedStrategy.scala");

    run.compile(JavaConverters.asScalaBufferConverter(files)
     .asScala().toList());

但我收到此错误：

线程“主”java.lang.NoSuchMethodError 中的异常：scala.tools.nsc.Global$gen$.mkBlock(Lscala/collection/immutable/List;)Lscala/reflect/internal/Trees$Tree; 在 scala.tools.nsc.ast.parser.TreeBuilder.makeBlock(TreeBuilder.scala:110) 在 scala.tools.nsc.ast.parser.Parsers$Parser.block(Parsers.scala:1689)

标签： javascalascala-compiler

Answer 1

尝试

    Settings s = new Settings();
    MutableSettings.BooleanSetting usejavacp = s.usejavacp(); // added
    usejavacp.value_$eq(true); // added
    Global g = new Global(s);
    Global.Run run = g.new Run();
    List<String> files = new LinkedList<>();

    files.add("src/main/java/scala/rules/ScalaRuleBasedStrategy.scala");

    run.compile(JavaConverters.asScalaBufferConverter(files)
            .asScala().toList());