[GitHub] [daffodil] stevedlawrence edited a comment on pull request #681: Fix some code generation corner cases

[GitBox <gi...@apache.org>]

stevedlawrence edited a comment on pull request #681:
URL: https://github.com/apache/daffodil/pull/681#issuecomment-972915240


   Regarding the version issue, I'm not sure of a way around that, but I'm not too familar with IDE's. Might be some IDE setting.
   
   I was curious to see if modifying build.sbt to add a new `sbt genExamples` would be complicated or messy, and I think it actually turned out not too bad:
   
   ```scala
   lazy val genExamples = taskKey[Unit]("Generate runtime2 example files")
   
   lazy val daffodil = project.in(file("."))...
                                  .settings(..., genExamplesSettings)
   
   ...
   
   lazy val genExamplesSettings = Seq(
     Compile / genExamples := {
       val tests = Seq(
         "ex_nums.dfdl.xsd" -> "ex_nums",
         "nested.dfdl.xsd" -> "NestedUnion",
       )
   
       val rootDir = (runtime2 / Test / resourceDirectory).value / "org" / "apache" / "daffodil" / "runtime2"
       val cp = (cli / Runtime / dependencyClasspath).value
       val stream = streams.value
       val mainClass = "org.apache.daffodil.Main"
       val forkOpts = ForkOptions()
                      .withBootJars(cp.files.toVector)
       tests.foreach { test =>
         IO.withTemporaryDirectory { tmpDir =>
           val args = Seq(mainClass, "generate", "c", "-s", (rootDir / test._1).toString, tmpDir.toString)
           val ret = Fork.java(forkOpts, args)
           if (ret != 0) {
             stream.log.error(s"failed to generate example: ${test._1}")
           }
           val srcDir = tmpDir / "c" / "libruntime"
           val tgtDir = rootDir / "examples" / test._2
           IO.copyFile(srcDir / "generated_code.c", tgtDir / "generated_code.c")
           IO.copyFile(srcDir / "generated_code.h", tgtDir / "generated_code.h")
         }
       }
     },
   )
   ```
   
   This depends on the Daffodil jars being built, and then fors java with the correct arguments to the run the CLI C generator to generate code to a temp directory and copy the generated files to the example directory.


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