[oxide] Expose experimental Rust parser setup (#11116)

* make `sequential` and `parallel` version of a new (tmp) `parse_candidate_strings`

* use bitmasks for the strategy

Only sending a number over the wire instead of a serialized objects.

* use cleaner match syntax

oxide/crates/core/src/lib.rs

@@ -1,4 +1,5 @@
 use crate::parser::Extractor;
+use fxhash::FxHashSet;
 use rayon::prelude::*;
 use std::path::PathBuf;
 use tracing::event;
@@ -11,14 +12,7 @@ pub mod parser;
 pub mod utility;
 pub mod variant;
 
-#[derive(Debug, Clone)]
-pub struct ChangedContent {
-    pub file: Option<PathBuf>,
-    pub content: Option<String>,
-    pub extension: String,
-}
-
-pub fn parse_candidate_strings_from_files(changed_content: Vec<ChangedContent>) -> Vec<String> {
+fn init_tracing() {
     if matches!(std::env::var("DEBUG"), Ok(value) if value.eq("*") || value.eq("1") || value.eq("true") || value.contains("tailwind"))
     {
         tracing_subscriber::fmt()
@@ -27,10 +21,63 @@ pub fn parse_candidate_strings_from_files(changed_content: Vec<ChangedContent>)
             .compact()
             .init();
     }
+}
+
+#[derive(Debug, Clone)]
+pub struct ChangedContent {
+    pub file: Option<PathBuf>,
+    pub content: Option<String>,
+    pub extension: String,
+}
+
+#[derive(Debug)]
+pub enum IO {
+    Sequential = 0b0001,
+    Parallel = 0b0010,
+}
 
+impl From<u8> for IO {
+    fn from(item: u8) -> Self {
+        match item & 0b0011 {
+            0b0001 => IO::Sequential,
+            0b0010 => IO::Parallel,
+            _ => unimplemented!("Unknown 'IO' strategy"),
+        }
+    }
+}
+
+#[derive(Debug)]
+pub enum Parsing {
+    Sequential = 0b0100,
+    Parallel = 0b1000,
+}
+
+impl From<u8> for Parsing {
+    fn from(item: u8) -> Self {
+        match item & 0b1100 {
+            0b0100 => Parsing::Sequential,
+            0b1000 => Parsing::Parallel,
+            _ => unimplemented!("Unknown 'Parsing' strategy"),
+        }
+    }
+}
+
+pub fn parse_candidate_strings_from_files(changed_content: Vec<ChangedContent>) -> Vec<String> {
+    init_tracing();
     parse_all_blobs(read_all_files(changed_content))
 }
 
+pub fn parse_candidate_strings(input: Vec<ChangedContent>, options: u8) -> Vec<String> {
+    init_tracing();
+
+    match (IO::from(options), Parsing::from(options)) {
+        (IO::Sequential, Parsing::Sequential) => parse_all_blobs_sync(read_all_files_sync(input)),
+        (IO::Sequential, Parsing::Parallel) => parse_all_blobs_sync(read_all_files(input)),
+        (IO::Parallel, Parsing::Sequential) => parse_all_blobs(read_all_files_sync(input)),
+        (IO::Parallel, Parsing::Parallel) => parse_all_blobs(read_all_files(input)),
+    }
+}
+
 #[tracing::instrument(skip(changed_content))]
 fn read_all_files(changed_content: Vec<ChangedContent>) -> Vec<Vec<u8>> {
     event!(
@@ -49,6 +96,24 @@ fn read_all_files(changed_content: Vec<ChangedContent>) -> Vec<Vec<u8>> {
         .collect()
 }
 
+#[tracing::instrument(skip(changed_content))]
+fn read_all_files_sync(changed_content: Vec<ChangedContent>) -> Vec<Vec<u8>> {
+    event!(
+        tracing::Level::INFO,
+        "Reading {:?} file(s)",
+        changed_content.len()
+    );
+
+    changed_content
+        .into_iter()
+        .map(|c| match (c.file, c.content) {
+            (Some(file), None) => std::fs::read(file).unwrap(),
+            (None, Some(content)) => content.into_bytes(),
+            _ => Default::default(),
+        })
+        .collect()
+}
+
 #[tracing::instrument(skip(blobs))]
 fn parse_all_blobs(blobs: Vec<Vec<u8>>) -> Vec<String> {
     let input: Vec<_> = blobs.iter().map(|blob| &blob[..]).collect();
@@ -72,3 +137,27 @@ fn parse_all_blobs(blobs: Vec<Vec<u8>>) -> Vec<String> {
     result.sort();
     result
 }
+
+#[tracing::instrument(skip(blobs))]
+fn parse_all_blobs_sync(blobs: Vec<Vec<u8>>) -> Vec<String> {
+    let input: Vec<_> = blobs.iter().map(|blob| &blob[..]).collect();
+    let input = &input[..];
+
+    let mut result: Vec<String> = input
+        .iter()
+        .map(|input| Extractor::unique(input, Default::default()))
+        .fold(FxHashSet::default(), |mut a, b| {
+            a.extend(b);
+            a
+        })
+        .into_iter()
+        .map(|s| {
+            // SAFETY: When we parsed the candidates, we already guaranteed that the byte slices
+            // are valid, therefore we don't have to re-check here when we want to convert it back
+            // to a string.
+            unsafe { String::from_utf8_unchecked(s.to_vec()) }
+        })
+        .collect();
+    result.sort();
+    result
+}

oxide/crates/node/src/lib.rs

@@ -1,3 +1,4 @@
+use napi::bindgen_prelude::ToNapiValue;
 use std::path::PathBuf;
 
 #[macro_use]
@@ -11,16 +12,38 @@ pub struct ChangedContent {
   pub extension: String,
 }
 
+impl From<ChangedContent> for tailwindcss_core::ChangedContent {
+  fn from(changed_content: ChangedContent) -> Self {
+    tailwindcss_core::ChangedContent {
+      file: changed_content.file.map(PathBuf::from),
+      content: changed_content.content,
+      extension: changed_content.extension,
+    }
+  }
+}
+
 #[napi]
 pub fn parse_candidate_strings_from_files(changed_content: Vec<ChangedContent>) -> Vec<String> {
   tailwindcss_core::parse_candidate_strings_from_files(
-    changed_content
-      .into_iter()
-      .map(|changed_content| tailwindcss_core::ChangedContent {
-        file: changed_content.file.map(PathBuf::from),
-        content: changed_content.content,
-        extension: changed_content.extension,
-      })
-      .collect(),
+    changed_content.into_iter().map(Into::into).collect(),
   )
 }
+
+#[derive(Debug)]
+#[napi]
+pub enum IO {
+  Sequential = 0b0001,
+  Parallel = 0b0010,
+}
+
+#[derive(Debug)]
+#[napi]
+pub enum Parsing {
+  Sequential = 0b0100,
+  Parallel = 0b1000,
+}
+
+#[napi]
+pub fn parse_candidate_strings(input: Vec<ChangedContent>, strategy: u8) -> Vec<String> {
+  tailwindcss_core::parse_candidate_strings(input.into_iter().map(Into::into).collect(), strategy)
+}