chore: split web op crate (#9635)

This commit starts splitting out the deno_web op crate into multiple
smaller crates. This commit splits out WebIDL and URL API, but in the
future I want to split out each spec into its own crate. That means we
will have (in rough order of loading): `webidl`, `dom`, `streams`,
`console`, `encoding`, `url`, `file`, `fetch`, `websocket`, and
`webgpu` crates.

1 files changed, 155 insertions, 0 deletions

diff --git a/op_crates/url/lib.rs b/op_crates/url/lib.rs
new file mode 100644
index 000000000..a655d8c34
--- /dev/null
+++ b/op_crates/url/lib.rs
@@ -0,0 +1,155 @@
+// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
+
+use deno_core::error::generic_error;
+use deno_core::error::type_error;
+use deno_core::error::uri_error;
+use deno_core::error::AnyError;
+use deno_core::serde_json;
+use deno_core::serde_json::json;
+use deno_core::serde_json::Value;
+use deno_core::url::form_urlencoded;
+use deno_core::url::quirks;
+use deno_core::url::Url;
+use deno_core::JsRuntime;
+use deno_core::ZeroCopyBuf;
+use serde::Deserialize;
+use serde::Serialize;
+use std::panic::catch_unwind;
+use std::path::PathBuf;
+
+/// Parse `UrlParseArgs::href` with an optional `UrlParseArgs::base_href`, or an
+/// optional part to "set" after parsing. Return `UrlParts`.
+pub fn op_url_parse(
+  _state: &mut deno_core::OpState,
+  args: Value,
+  _zero_copy: &mut [ZeroCopyBuf],
+) -> Result<Value, AnyError> {
+  #[derive(Deserialize)]
+  #[serde(rename_all = "camelCase")]
+  struct UrlParseArgs {
+    href: String,
+    base_href: Option<String>,
+    // If one of the following are present, this is a setter call. Apply the
+    // proper `Url::set_*()` method after (re)parsing `href`.
+    set_hash: Option<String>,
+    set_host: Option<String>,
+    set_hostname: Option<String>,
+    set_password: Option<String>,
+    set_pathname: Option<String>,
+    set_port: Option<String>,
+    set_protocol: Option<String>,
+    set_search: Option<String>,
+    set_username: Option<String>,
+  }
+  let args: UrlParseArgs = serde_json::from_value(args)?;
+  let base_url = args
+    .base_href
+    .as_ref()
+    .map(|b| Url::parse(b).map_err(|_| type_error("Invalid base URL")))
+    .transpose()?;
+  let mut url = Url::options()
+    .base_url(base_url.as_ref())
+    .parse(&args.href)
+    .map_err(|_| type_error("Invalid URL"))?;
+
+  if let Some(hash) = args.set_hash.as_ref() {
+    quirks::set_hash(&mut url, hash);
+  } else if let Some(host) = args.set_host.as_ref() {
+    quirks::set_host(&mut url, host).map_err(|_| uri_error("Invalid host"))?;
+  } else if let Some(hostname) = args.set_hostname.as_ref() {
+    quirks::set_hostname(&mut url, hostname)
+      .map_err(|_| uri_error("Invalid hostname"))?;
+  } else if let Some(password) = args.set_password.as_ref() {
+    quirks::set_password(&mut url, password)
+      .map_err(|_| uri_error("Invalid password"))?;
+  } else if let Some(pathname) = args.set_pathname.as_ref() {
+    quirks::set_pathname(&mut url, pathname);
+  } else if let Some(port) = args.set_port.as_ref() {
+    quirks::set_port(&mut url, port).map_err(|_| uri_error("Invalid port"))?;
+  } else if let Some(protocol) = args.set_protocol.as_ref() {
+    quirks::set_protocol(&mut url, protocol)
+      .map_err(|_| uri_error("Invalid protocol"))?;
+  } else if let Some(search) = args.set_search.as_ref() {
+    quirks::set_search(&mut url, search);
+  } else if let Some(username) = args.set_username.as_ref() {
+    quirks::set_username(&mut url, username)
+      .map_err(|_| uri_error("Invalid username"))?;
+  }
+
+  #[derive(Serialize)]
+  struct UrlParts<'a> {
+    href: &'a str,
+    hash: &'a str,
+    host: &'a str,
+    hostname: &'a str,
+    origin: &'a str,
+    password: &'a str,
+    pathname: &'a str,
+    port: &'a str,
+    protocol: &'a str,
+    search: &'a str,
+    username: &'a str,
+  }
+  // TODO(nayeemrmn): Panic that occurs in rust-url for the `non-spec:`
+  // url-constructor wpt tests: https://github.com/servo/rust-url/issues/670.
+  let username = catch_unwind(|| quirks::username(&url)).map_err(|_| {
+    generic_error(format!(
+      "Internal error while parsing \"{}\"{}, \
+       see https://github.com/servo/rust-url/issues/670",
+      args.href,
+      args
+        .base_href
+        .map(|b| format!(" against \"{}\"", b))
+        .unwrap_or_default()
+    ))
+  })?;
+  Ok(json!(UrlParts {
+    href: quirks::href(&url),
+    hash: quirks::hash(&url),
+    host: quirks::host(&url),
+    hostname: quirks::hostname(&url),
+    origin: &quirks::origin(&url),
+    password: quirks::password(&url),
+    pathname: quirks::pathname(&url),
+    port: quirks::port(&url),
+    protocol: quirks::protocol(&url),
+    search: quirks::search(&url),
+    username,
+  }))
+}
+
+pub fn op_url_parse_search_params(
+  _state: &mut deno_core::OpState,
+  args: Value,
+  _zero_copy: &mut [ZeroCopyBuf],
+) -> Result<Value, AnyError> {
+  let search: String = serde_json::from_value(args)?;
+  let search_params: Vec<_> = form_urlencoded::parse(search.as_bytes())
+    .into_iter()
+    .collect();
+  Ok(json!(search_params))
+}
+
+pub fn op_url_stringify_search_params(
+  _state: &mut deno_core::OpState,
+  args: Value,
+  _zero_copy: &mut [ZeroCopyBuf],
+) -> Result<Value, AnyError> {
+  let search_params: Vec<(String, String)> = serde_json::from_value(args)?;
+  let search = form_urlencoded::Serializer::new(String::new())
+    .extend_pairs(search_params)
+    .finish();
+  Ok(json!(search))
+}
+
+/// Load and execute the javascript code.
+pub fn init(isolate: &mut JsRuntime) {
+  let files = vec![("deno:op_crates/url/00_url.js", include_str!("00_url.js"))];
+  for (url, source_code) in files {
+    isolate.execute(url, source_code).unwrap();
+  }
+}
+
+pub fn get_declaration() -> PathBuf {
+  PathBuf::from(env!("CARGO_MANIFEST_DIR")).join("lib.deno_url.d.ts")
+}