From 2e1ab8232156a23afd22834c1e707fb3403c0db6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bartek=20Iwa=C5=84czuk?= <biwanczuk@gmail.com>
Date: Wed, 31 Jul 2019 19:16:03 +0200
Subject: refactor: cleanup compiler pipeline (#2686)

* remove fetch_source_file_and_maybe_compile_async and
  replace it with State.fetch_compiled_module

* remove SourceFile.js_source()

* introduce CompiledModule which is basically the same as
  deno::SourceInfo and represents arbitrary file that has been
  compiled to JS module

* introduce //cli/compilers module containing all compilers

* introduce JsCompiler which is a no-op compiler
  - output is the same as input, no compilation takes place
  - it is used for MediaType::JavaScript and MediaType::Unknown

* introduce JsonCompiler that wraps JSON in default export

* support JS-to-JS compilation using checkJs
---
 cli/compilers/json.rs | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 cli/compilers/json.rs

(limited to 'cli/compilers/json.rs')

diff --git a/cli/compilers/json.rs b/cli/compilers/json.rs
new file mode 100644
index 000000000..57e44d354
--- /dev/null
+++ b/cli/compilers/json.rs
@@ -0,0 +1,26 @@
+// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
+use crate::compilers::CompiledModule;
+use crate::compilers::CompiledModuleFuture;
+use crate::file_fetcher::SourceFile;
+use crate::state::ThreadSafeState;
+use std::str;
+
+pub struct JsonCompiler {}
+
+impl JsonCompiler {
+  pub fn compile_async(
+    self: &Self,
+    _state: ThreadSafeState,
+    source_file: &SourceFile,
+  ) -> Box<CompiledModuleFuture> {
+    let module = CompiledModule {
+      code: format!(
+        "export default {};",
+        str::from_utf8(&source_file.source_code).unwrap()
+      ),
+      name: source_file.url.to_string(),
+    };
+
+    Box::new(futures::future::ok(module))
+  }
+}
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