public void WhenIWantToGenerateCodeFromThatSchema()
{
string path = Path.Combine(Path.GetTempPath(), _inputSchemaFileName);
File.WriteAllText(path, _inputSchema);
_result = CapnpCompilation.InvokeCapnpAndGenerate(new string[] { path });
}
public CsFileGeneratorResult GenerateCodeBehindFile(CapnpGenJob job)
{
string capnpFile = job.CapnpPath;
// Works around a weird capnp.exe behavior: When the input file is empty, it will spit out an exception dump
// instead of a parse error. But the parse error is nice because it contains a generated ID. We want the parse error!
// Workaround: Generate a temporary file that contains a single line break (such that it is not empty...)
try
{
if (File.Exists(capnpFile) && new FileInfo(capnpFile).Length == 0)
{
string tempFile = Path.Combine(Path.GetTempPath(), Path.GetRandomFileName() + ".capnp");
File.WriteAllText(tempFile, Environment.NewLine);
try
{
var jobCopy = new CapnpGenJob()
{
CapnpPath = tempFile,
WorkingDirectory = job.WorkingDirectory
};
jobCopy.AdditionalArguments.AddRange(job.AdditionalArguments);
return(GenerateCodeBehindFile(jobCopy));
}
finally
{
File.Delete(tempFile);
}
}
}
catch
{
}
var args = new List <string>();
args.AddRange(job.AdditionalArguments);
args.Add(capnpFile);
var result = CapnpCompilation.InvokeCapnpAndGenerate(args, job.WorkingDirectory);
if (result.IsSuccess)
{
if (result.GeneratedFiles.Count == 1)
{
return(new CsFileGeneratorResult(
result.GeneratedFiles[0],
capnpFile + ".cs",
result.Messages));
}
else
{
return(new CsFileGeneratorResult(
"Code generation produced more than one file. This is not supported.",
result.Messages));
}
}
else
{
switch (result.ErrorCategory)
{
case CapnpProcessFailure.NotFound:
return(new CsFileGeneratorResult("Unable to find capnp.exe - please install capnproto on your system first."));
case CapnpProcessFailure.BadInput:
return(new CsFileGeneratorResult("Invalid schema", result.Messages));
case CapnpProcessFailure.BadOutput:
return(new CsFileGeneratorResult(
"Internal error: capnp.exe produced a binary code generation request which was not understood by the backend",
result.Messages));
default:
throw new NotSupportedException("Invalid error category");
}
}
}