Toy (another JVM based language)

Toy is a simple programming language running on the jvm, which is envolved from Enkel

Build & Run

• Generate parser code from ANTLR ./gradlew :antlr:generateGrammarSource

• Compile *.toy to *.class
  command line usage:

  usage: Compiler [-d <destination>] [-h] [-m <module>] [-s <source>]
   -d,--dest <destination>   the output directory of the class files,
                             otherwise the root directory of project as
                             default.
   -h,--help                 show this help message and exit program
   -m,--module <module>      the module declared in ToyMake.json you want to
                             build,
                             otherwise all the modules will be built.
   -s,--src <source>         the root directory of your project,
                             otherwise the workspace directory as default.

  example:

  java -cp build/:compiler/build/libs/compiler-0.0.1-SNAPSHOT.jar xyz.chph.toy.compiler.Compiler -s ToyExamples/ -d build/

  output:

  steve@steve-PC:~/$ java -cp build/:compiler/build/libs/compiler-0.0.1-SNAPSHOT.jar xyz.chph.toy.compiler.Compiler -s ToyExamples/ -d build/
  Importing/Function.toy
  Importing/Import.toy
  ClassPathCalls/Library.toy
  ClassPathCalls/Client.toy
  ClassPathCalls/TestJava.toy

  and the class files will be created in ./build/：

  steve@steve-PC:~/$ tree build/
  build/
  ├── ClassPathCalls
  │   ├── Client.class
  │   ├── Library.class
  │   └── TestJava.class
  └── Importing
      ├── Function.class
      └── Import.class
  
  2 directories, 5 files

• Run java -cp build/ *.class, examples:

  java -cp build/ Importing.Import

Example

• Input(Fields.toy)

Fields {
int field
start {
   field = 5
   print field
}
}

• Output(Fields.class)

Decompiled form:

public class Fields {
    public int field;

    public void start() {
        this.field = 5;
        System.out.println(this.field);
    }

    public Fields() {
    }

    public static void main(String[] var0) {
        (new Fields()).start();
    }
}

Other examples please see ./ToyExamples/*.toy

TODO

• Unit Tests & Bugs fixing
• Other grammar features
• VS Code/IDEA highlight plugin
• Support debugger
• Port to LLVM IR