Packages

trait PluginFrontend extends AnyRef

A PluginFrontend instance provides a platform-dependent way for protoc to communicate with a JVM based ProtocCodeGenerator.

protoc is able to launch plugins. Plugins are executables that take a serialized CodeGenerationRequest via stdin and serialize a CodeGenerationRequest to stdout. The idea in PluginFrontend is to create a minimal plugin that wires its stdin/stdout to this JVM.

The two-way communication always goes as follows:

  1. protoc writes a request to the stdin of a plugin 2. plugin writes the data to the channel 3. this JVM reads it, interprets it as CodeGenerationRequest and process it. 4. this JVM writes a CodeGenerationResponse to the channel 5. this JVM closes the channel. 6. the plugin reads the data and writes it to standard out. 7. protoc handles the CodeGenerationResponse (creates Scala sources)
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PosixPluginFrontend, WindowsPluginFrontend
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Type Members

  1. abstract type InternalState

Abstract Value Members

  1. abstract def cleanup(state: InternalState): Unit
  2. abstract def prepare(plugin: ProtocCodeGenerator, env: ExtraEnv): (Path, InternalState)

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