Merge pull request #11 from ratel-rust/test-n-benches

No Rust CLI, added benchmarks

Author: maciejhirsz

core/Cargo.toml

@@ -1,16 +1,8 @@
 [package]
 name = "ratel"
-version = "0.3.0"
+version = "0.4.0"
 authors = ["Maciej Hirsz <[email protected]>"]
 license = "MIT"
 description = "JavaScript transpiler in Rust"
 repository = "https://github.com/ratel-rust/ratel-core"
 documentation = "https://github.com/ratel-rust/ratel-core"
-
-[profile.release]
-panic = "abort"
-
-[dependencies]
-docopt = "0.6.78"
-rustc-serialize = "0.3.16"
-itoa = "0.1.1"

core/README.md

@@ -0,0 +1,15 @@
+# the `ratel` crate
+
+## Test:
+
+```
+cargo test
+```
+
+## Benchmark:
+
+```
+cargo bench
+```
+
+Benchmarks require a nightly version of Rust to work.

core/benches/colors.rs

@@ -0,0 +1,135 @@
+#![feature(test)]
+
+extern crate test;
+extern crate ratel;
+
+use test::Bencher;
+
+static SOURCE: &'static str = r#"
+
+'use strict';
+
+/**
+ * Extranct red color out of a color integer:
+ *
+ * 0x00DEAD -> 0x00
+ *
+ * @param  {Number} color
+ * @return {Number}
+ */
+function red( color )
+{
+    let foo = 3.14;
+    return color >> 16;
+}
+
+/**
+ * Extranct red color out of a color integer:
+ *
+ * 0x00DEAD -> 0xDE
+ *
+ * @param  {Number} color
+ * @return {Number}
+ */
+function green( color )
+{
+    return ( color >> 8 ) & 0xFF;
+}
+
+
+/**
+ * Extranct red color out of a color integer:
+ *
+ * 0x00DEAD -> 0xAD
+ *
+ * @param  {Number} color
+ * @return {Number}
+ */
+function blue( color )
+{
+    return color & 0xFF;
+}
+
+
+/**
+ * Converts an integer containing a color such as 0x00DEAD to a hex
+ * string, such as '#00DEAD';
+ *
+ * @param  {Number} int
+ * @return {String}
+ */
+function intToHex( int )
+{
+    const mask = '#000000';
+
+    const hex = int.toString( 16 );
+
+    return mask.substring( 0, 7 - hex.length ) + hex;
+}
+
+
+/**
+ * Converts a hex string containing a color such as '#00DEAD' to
+ * an integer, such as 0x00DEAD;
+ *
+ * @param  {Number} num
+ * @return {String}
+ */
+function hexToInt( hex )
+{
+    return parseInt( hex.substring( 1 ), 16 );
+}
+
+module.exports = {
+    red,
+    green,
+    blue,
+    intToHex,
+    hexToInt,
+};
+
+"#;
+
+#[bench]
+fn parse_to_ast(b: &mut Bencher) {
+    b.bytes = SOURCE.len() as u64;
+
+    b.iter(|| {
+        let ast = ratel::parser::parse(SOURCE.to_owned()).expect("Must parse");
+
+        ast
+    });
+}
+
+
+#[bench]
+fn parse_to_ast_and_transform_es5(b: &mut Bencher) {
+    b.bytes = SOURCE.len() as u64;
+
+    b.iter(|| {
+        let mut ast = ratel::parser::parse(SOURCE.to_owned()).expect("Must parse");
+
+        let settings = ratel::transformer::Settings::target_es5();
+
+        ratel::transformer::transform(&mut ast, settings);
+
+        ast
+    });
+}
+
+#[bench]
+fn codegen_from_ast(b: &mut Bencher) {
+    let mut ast = ratel::parser::parse(SOURCE.to_owned()).expect("Must parse");
+
+    let settings = ratel::transformer::Settings::target_es5();
+
+    ratel::transformer::transform(&mut ast, settings);
+
+    let output = ratel::codegen::generate_code(&ast, true);
+
+    b.bytes = output.len() as u64;
+
+    b.iter(|| {
+        ratel::codegen::generate_code(&ast, true)
+    });
+}

core/src/codegen.rs

@@ -1,6 +1,5 @@
-extern crate itoa;
-
 use std::ptr;
+use std::io::Write;
 
 use grammar::*;
 use grammar::OperatorType::*;
@@ -129,7 +128,7 @@ trait Code {
 impl Code for u64 {
     #[inline]
     fn to_code(&self, gen: &mut Generator) {
-        itoa::write(&mut gen.code, *self).expect("Can't fail on a Vec");
+        write!(&mut gen.code, "{}", *self).expect("Can't fail on a Vec");
     }
 }
 
@@ -716,11 +715,11 @@ impl Code for Statement {
     }
 }
 
-pub fn generate_code(program: Program, minify: bool) -> String {
+pub fn generate_code(program: &Program, minify: bool) -> String {
     let mut gen = Generator::new(minify);
 
-    for statement in program.body {
-        gen.write(&statement);
+    for statement in &program.body {
+        gen.write(statement);
         gen.new_line();
     }
 

core/src/main.rs

@@ -8,7 +8,7 @@ pub use ratel::grammar::OperatorType::*;
 fn output_program(input_program: &str) -> String {
     let mut ast = parser::parse(input_program.to_string()).expect("Must compile");
     transformer::transform(&mut ast, transformer::Settings::target_es5());
-    codegen::generate_code(ast, true)
+    codegen::generate_code(&ast, true)
 }
 
 macro_rules! assert_compile {

core/tests/codegen.rs

@@ -1,3 +1,4 @@
+npm-debug.log
 Cargo.lock
 native/target
 native/index.node

ffi/.gitignore

@@ -26,7 +26,7 @@ fn transform(call: Call) -> JsResult<JsString> {
     };
 
     transformer::transform(&mut ast, transformer::Settings::target_es5());
-    let out = codegen::generate_code(ast, minify.value());
+    let out = codegen::generate_code(&ast, minify.value());
 
     Ok(JsString::new(scope, &out).unwrap())
 }