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// Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
use serde::Serialize;
use serde::Serializer;
use std::fmt;
use std::path::Path;
use std::path::PathBuf;
// Warning! The values in this enum are duplicated in tsc/99_main_compiler.js
// Update carefully!
#[allow(non_camel_case_types)]
#[repr(i32)]
#[derive(Clone, Copy, PartialEq, Debug)]
pub enum MediaType {
JavaScript = 0,
JSX = 1,
TypeScript = 2,
Dts = 3,
TSX = 4,
Json = 5,
Wasm = 6,
Unknown = 8,
}
impl fmt::Display for MediaType {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
let value = match self {
MediaType::JavaScript => "JavaScript",
MediaType::JSX => "JSX",
MediaType::TypeScript => "TypeScript",
MediaType::Dts => "Dts",
MediaType::TSX => "TSX",
MediaType::Json => "Json",
MediaType::Wasm => "Wasm",
MediaType::Unknown => "Unknown",
};
write!(f, "{}", value)
}
}
impl<'a> From<&'a Path> for MediaType {
fn from(path: &'a Path) -> Self {
MediaType::from_path(path)
}
}
impl<'a> From<&'a PathBuf> for MediaType {
fn from(path: &'a PathBuf) -> Self {
MediaType::from_path(path)
}
}
impl<'a> From<&'a String> for MediaType {
fn from(specifier: &'a String) -> Self {
MediaType::from_path(&PathBuf::from(specifier))
}
}
impl MediaType {
fn from_path(path: &Path) -> Self {
match path.extension() {
None => MediaType::Unknown,
Some(os_str) => match os_str.to_str() {
Some("ts") => MediaType::TypeScript,
Some("tsx") => MediaType::TSX,
Some("js") => MediaType::JavaScript,
Some("jsx") => MediaType::JSX,
Some("mjs") => MediaType::JavaScript,
Some("cjs") => MediaType::JavaScript,
Some("json") => MediaType::Json,
Some("wasm") => MediaType::Wasm,
_ => MediaType::Unknown,
},
}
}
}
impl Serialize for MediaType {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
let value = match self {
MediaType::JavaScript => 0 as i32,
MediaType::JSX => 1 as i32,
MediaType::TypeScript => 2 as i32,
MediaType::Dts => 3 as i32,
MediaType::TSX => 4 as i32,
MediaType::Json => 5 as i32,
MediaType::Wasm => 6 as i32,
MediaType::Unknown => 8 as i32,
};
Serialize::serialize(&value, serializer)
}
}
/// Serialize a `MediaType` enum into a human readable string. The default
/// serialization for media types is and integer.
///
/// TODO(@kitsonk) remove this once we stop sending MediaType into tsc.
pub fn serialize_media_type<S>(mt: &MediaType, s: S) -> Result<S::Ok, S::Error>
where
S: Serializer,
{
s.serialize_str(&format!("{}", mt))
}
#[cfg(test)]
mod tests {
use super::*;
use deno_core::serde_json::json;
#[test]
fn test_map_file_extension() {
assert_eq!(
MediaType::from(Path::new("foo/bar.ts")),
MediaType::TypeScript
);
assert_eq!(MediaType::from(Path::new("foo/bar.tsx")), MediaType::TSX);
assert_eq!(
MediaType::from(Path::new("foo/bar.d.ts")),
MediaType::TypeScript
);
assert_eq!(
MediaType::from(Path::new("foo/bar.js")),
MediaType::JavaScript
);
assert_eq!(MediaType::from(Path::new("foo/bar.jsx")), MediaType::JSX);
assert_eq!(MediaType::from(Path::new("foo/bar.json")), MediaType::Json);
assert_eq!(MediaType::from(Path::new("foo/bar.wasm")), MediaType::Wasm);
assert_eq!(
MediaType::from(Path::new("foo/bar.cjs")),
MediaType::JavaScript
);
assert_eq!(
MediaType::from(Path::new("foo/bar.txt")),
MediaType::Unknown
);
assert_eq!(MediaType::from(Path::new("foo/bar")), MediaType::Unknown);
}
#[test]
fn test_serialization() {
assert_eq!(json!(MediaType::JavaScript), json!(0));
assert_eq!(json!(MediaType::JSX), json!(1));
assert_eq!(json!(MediaType::TypeScript), json!(2));
assert_eq!(json!(MediaType::Dts), json!(3));
assert_eq!(json!(MediaType::TSX), json!(4));
assert_eq!(json!(MediaType::Json), json!(5));
assert_eq!(json!(MediaType::Wasm), json!(6));
assert_eq!(json!(MediaType::Unknown), json!(8));
}
#[test]
fn test_display() {
assert_eq!(format!("{}", MediaType::JavaScript), "JavaScript");
assert_eq!(format!("{}", MediaType::JSX), "JSX");
assert_eq!(format!("{}", MediaType::TypeScript), "TypeScript");
assert_eq!(format!("{}", MediaType::Dts), "Dts");
assert_eq!(format!("{}", MediaType::TSX), "TSX");
assert_eq!(format!("{}", MediaType::Json), "Json");
assert_eq!(format!("{}", MediaType::Wasm), "Wasm");
assert_eq!(format!("{}", MediaType::Unknown), "Unknown");
}
}
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