Implemented #427, #429 and #430, and upgraded dependencies (#472)

4 years ago · 64dbf13afd
9 changed files with 360 additions and 155 deletions
--- a/.devcontainer/devcontainer.json
+++ b/.devcontainer/devcontainer.json
@ -1,43 +0,0 @@
-// For format details, see https://aka.ms/vscode-remote/devcontainer.json or the definition README at
-// https://github.com/microsoft/vscode-dev-containers/tree/master/containers/docker-existing-dockerfile
-{
-  "name": "Existing Dockerfile",
-  // Sets the run context to one level up instead of the .devcontainer folder.
-  "context": "..",
-  // Update the 'dockerFile' property if you aren't using the standard 'Dockerfile' filename.
-  "dockerFile": "../Dockerfile",
-  // The optional 'runArgs' property can be used to specify additional runtime arguments.
-  "runArgs": [
-    // Uncomment the next line to use Docker from inside the container. See https://aka.ms/vscode-remote/samples/docker-in-docker for details.
-    // "-v","/var/run/docker.sock:/var/run/docker.sock",
-    // Uncomment the next line if you will be using a ptrace-based debugger like C++, Go, and Rust.
-    "--cap-add=SYS_PTRACE",
-    "--security-opt",
-    "seccomp=unconfined"
-    // You may want to add a non-root user to your Dockerfile. On Linux, this will prevent
-    // new files getting created as root. See https://aka.ms/vscode-remote/containers/non-root-user
-    // for the needed Dockerfile updates and then uncomment the next line.
-    // "-u", "vscode"
-  ],
-  // Use 'settings' to set *default* container specific settings.json values on container create.
-  // You can edit these settings after create using File > Preferences > Settings > Remote.
-  "settings": {
-    // This will ignore your local shell user setting for Linux since shells like zsh are typically
-    // not in base container images. You can also update this to an specific shell to ensure VS Code
-    // uses the right one for terminals and tasks. For example, /bin/bash (or /bin/ash for Alpine).
-    "terminal.integrated.shell.linux": null,
-    "lldb.launch.sourceLanguages": [
-      "rust"
-    ]
-  },
-  // Uncomment the next line if you want to publish any ports.
-  // "appPort": [],
-  // Uncomment the next line to run commands after the container is created - for example installing git.
-  // "postCreateCommand": "apt-get update && apt-get install -y git",
-  // Add the IDs of extensions you want installed when the container is created in the array below.
-  "extensions": [
-    "vadimcn.vscode-lldb",
-    "matklad.rust-analyzer"
-  ],
-  "postCreateCommand": "rustup toolchain install stable && rustup component add rust-src rust-analysis --toolchain stable"
-}
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@ -26,7 +26,7 @@ jobs:
        with:
          path: target
          key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}
-      - uses: boa-dev/criterion-compare-action@63f86533b46ac15ffe9afafc8fb5c5b60ad4184d
+      - uses: boa-dev/criterion-compare-action@master
        with:
          token: ${{ secrets.GITHUB_TOKEN }}
          cwd: boa
--- a/Cargo.lock
+++ b/Cargo.lock
@ -92,9 +92,9 @@ dependencies = [

 [[package]]
 name = "bumpalo"
-version = "3.3.0"
+version = "3.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5356f1d23ee24a1f785a56d1d1a5f0fd5b0f6a0c0fb2412ce11da71649ab78f6"
+checksum = "2e8c087f005730276d1096a652e92a8bacee2e2472bcc9715a74d2bec38b5820"

 [[package]]
 name = "byteorder"
@ -210,9 +210,9 @@ dependencies = [

 [[package]]
 name = "crossbeam-queue"
-version = "0.2.1"
+version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c695eeca1e7173472a32221542ae469b3e9aac3a4fc81f7696bcad82029493db"
+checksum = "ab6bffe714b6bb07e42f201352c34f51fefd355ace793f9e638ebd52d23f98d2"
 dependencies = [
 "cfg-if",
 "crossbeam-utils",
@ -265,18 +265,18 @@ checksum = "5f2a4a2034423744d2cc7ca2068453168dcdb82c438419e639a26bd87839c674"

 [[package]]
 name = "gc"
-version = "0.3.5"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1a56d49bc3e3be03d3432ba45e0503aa13f7e0ad2fc2e6d8ab50b33725b3d767"
+checksum = "c94b8d46989f31474299e1483db243a9ed1f8a7d8508a78c91449e76e9ef6756"
 dependencies = [
 "gc_derive",
 ]

 [[package]]
 name = "gc_derive"
-version = "0.3.5"
+version = "0.3.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "034ffcc744b2fc6ec8d23695a4562428093b6f37c74746d9ee9ce606bfc869b8"
+checksum = "52c734b94d1d53fcc70e42c83cd7c6e108c9a4f6da8e78098a7d212805e86151"
 dependencies = [
 "proc-macro2",
 "quote",
@ -351,9 +351,9 @@ dependencies = [

 [[package]]
 name = "js-sys"
-version = "0.3.39"
+version = "0.3.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fa5a448de267e7358beaf4a5d849518fe9a0c13fce7afd44b06e68550e5562a7"
+checksum = "ce10c23ad2ea25ceca0093bd3192229da4c5b3c0f2de499c1ecac0d98d452177"
 dependencies = [
 "wasm-bindgen",
 ]
@ -366,9 +366,9 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"

 [[package]]
 name = "libc"
-version = "0.2.70"
+version = "0.2.71"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3baa92041a6fec78c687fa0cc2b3fae8884f743d672cf551bed1d6dac6988d0f"
+checksum = "9457b06509d27052635f90d6466700c65095fdf75409b3fbdd903e988b886f49"

 [[package]]
 name = "lock_api"
@ -512,9 +512,9 @@ dependencies = [

 [[package]]
 name = "plotters"
-version = "0.2.14"
+version = "0.2.15"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f9b1d9ca091d370ea3a78d5619145d1b59426ab0c9eedbad2514a4cee08bf389"
+checksum = "0d1685fbe7beba33de0330629da9d955ac75bd54f33d7b79f9a895590124f6bb"
 dependencies = [
 "js-sys",
 "num-traits",
@ -556,18 +556,18 @@ dependencies = [

 [[package]]
 name = "proc-macro2"
-version = "1.0.17"
+version = "1.0.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1502d12e458c49a4c9cbff560d0fe0060c252bc29799ed94ca2ed4bb665a0101"
+checksum = "beae6331a816b1f65d04c45b078fd8e6c93e8071771f41b8163255bbd8d7c8fa"
 dependencies = [
 "unicode-xid",
 ]

 [[package]]
 name = "quote"
-version = "1.0.6"
+version = "1.0.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "54a21852a652ad6f610c9510194f398ff6f8692e334fd1145fed931f7fbe44ea"
+checksum = "aa563d17ecb180e500da1cfd2b028310ac758de548efdd203e18f283af693f37"
 dependencies = [
 "proc-macro2",
 ]
@ -645,9 +645,9 @@ checksum = "2439c63f3f6139d1b57529d16bc3b8bb855230c8efcc5d3a896c8bea7c3b1e84"

 [[package]]
 name = "regex"
-version = "1.3.7"
+version = "1.3.9"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a6020f034922e3194c711b82a627453881bc4682166cabb07134a10c26ba7692"
+checksum = "9c3780fcf44b193bc4d09f36d2a3c87b251da4a046c87795a0d35f4f927ad8e6"
 dependencies = [
 "aho-corasick",
 "memchr",
@ -666,9 +666,9 @@ dependencies = [

 [[package]]
 name = "regex-syntax"
-version = "0.6.17"
+version = "0.6.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fe5bd57d1d7414c6b5ed48563a2c855d995ff777729dcd91c369ec7fea395ae"
+checksum = "26412eb97c6b088a6997e05f69403a802a92d520de2f8e63c2b65f9e0f47c4e8"

 [[package]]
 name = "rustc-hash"
@ -687,9 +687,9 @@ dependencies = [

 [[package]]
 name = "ryu"
-version = "1.0.4"
+version = "1.0.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ed3d612bc64430efeb3f7ee6ef26d590dce0c43249217bddc62112540c7941e1"
+checksum = "71d301d4193d031abdd79ff7e3dd721168a9572ef3fe51a1517aba235bd8f86e"

 [[package]]
 name = "same-file"
@ -723,18 +723,18 @@ checksum = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"

 [[package]]
 name = "serde"
-version = "1.0.110"
+version = "1.0.111"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "99e7b308464d16b56eba9964e4972a3eee817760ab60d88c3f86e1fecb08204c"
+checksum = "c9124df5b40cbd380080b2cc6ab894c040a3070d995f5c9dc77e18c34a8ae37d"
 dependencies = [
 "serde_derive",
 ]

 [[package]]
 name = "serde_derive"
-version = "1.0.110"
+version = "1.0.111"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "818fbf6bfa9a42d3bfcaca148547aa00c7b915bec71d1757aa2d44ca68771984"
+checksum = "3f2c3ac8e6ca1e9c80b8be1023940162bf81ae3cffbb1809474152f2ce1eb250"
 dependencies = [
 "proc-macro2",
 "quote",
@ -743,9 +743,9 @@ dependencies = [

 [[package]]
 name = "serde_json"
-version = "1.0.53"
+version = "1.0.55"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "993948e75b189211a9b31a7528f950c6adc21f9720b6438ff80a7fa2f864cea2"
+checksum = "ec2c5d7e739bc07a3e73381a39d61fdb5f671c60c1df26a130690665803d8226"
 dependencies = [
 "itoa",
 "ryu",
@ -793,9 +793,9 @@ dependencies = [

 [[package]]
 name = "syn"
-version = "1.0.23"
+version = "1.0.31"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "95b5f192649e48a5302a13f2feb224df883b98933222369e4b3b0fe2a5447269"
+checksum = "b5304cfdf27365b7585c25d4af91b35016ed21ef88f17ced89c7093b43dba8b6"
 dependencies = [
 "proc-macro2",
 "quote",
@ -815,9 +815,9 @@ dependencies = [

 [[package]]
 name = "synstructure"
-version = "0.12.3"
+version = "0.12.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "67656ea1dc1b41b1451851562ea232ec2e5a80242139f7e679ceccfb5d61f545"
+checksum = "b834f2d66f734cb897113e34aaff2f1ab4719ca946f9a7358dba8f8064148701"
 dependencies = [
 "proc-macro2",
 "quote",
@ -845,9 +845,9 @@ dependencies = [

 [[package]]
 name = "tinytemplate"
-version = "1.0.4"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "45e4bc5ac99433e0dcb8b9f309dd271a165ae37dde129b9e0ce1bfdd8bfe4891"
+checksum = "6d3dc76004a03cec1c5932bca4cdc2e39aaa798e3f82363dd94f9adf6098c12f"
 dependencies = [
 "serde",
 "serde_json",
@ -902,9 +902,9 @@ checksum = "cccddf32554fecc6acb585f82a32a72e28b48f8c4c1883ddfeeeaa96f7d8e519"

 [[package]]
 name = "wasm-bindgen"
-version = "0.2.62"
+version = "0.2.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e3c7d40d09cdbf0f4895ae58cf57d92e1e57a9dd8ed2e8390514b54a47cc5551"
+checksum = "4c2dc4aa152834bc334f506c1a06b866416a8b6697d5c9f75b9a689c8486def0"
 dependencies = [
 "cfg-if",
 "wasm-bindgen-macro",
@ -912,9 +912,9 @@ dependencies = [

 [[package]]
 name = "wasm-bindgen-backend"
-version = "0.2.62"
+version = "0.2.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c3972e137ebf830900db522d6c8fd74d1900dcfc733462e9a12e942b00b4ac94"
+checksum = "ded84f06e0ed21499f6184df0e0cb3494727b0c5da89534e0fcc55c51d812101"
 dependencies = [
 "bumpalo",
 "lazy_static",
@ -927,9 +927,9 @@ dependencies = [

 [[package]]
 name = "wasm-bindgen-macro"
-version = "0.2.62"
+version = "0.2.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2cd85aa2c579e8892442954685f0d801f9129de24fa2136b2c6a539c76b65776"
+checksum = "838e423688dac18d73e31edce74ddfac468e37b1506ad163ffaf0a46f703ffe3"
 dependencies = [
 "quote",
 "wasm-bindgen-macro-support",
@ -937,9 +937,9 @@ dependencies = [

 [[package]]
 name = "wasm-bindgen-macro-support"
-version = "0.2.62"
+version = "0.2.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8eb197bd3a47553334907ffd2f16507b4f4f01bbec3ac921a7719e0decdfe72a"
+checksum = "3156052d8ec77142051a533cdd686cba889537b213f948cd1d20869926e68e92"
 dependencies = [
 "proc-macro2",
 "quote",
@ -950,15 +950,15 @@ dependencies = [

 [[package]]
 name = "wasm-bindgen-shared"
-version = "0.2.62"
+version = "0.2.63"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a91c2916119c17a8e316507afaaa2dd94b47646048014bbdf6bef098c1bb58ad"
+checksum = "c9ba19973a58daf4db6f352eda73dc0e289493cd29fb2632eb172085b6521acd"

 [[package]]
 name = "web-sys"
-version = "0.3.39"
+version = "0.3.40"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8bc359e5dd3b46cb9687a051d50a2fdd228e4ba7cf6fcf861a5365c3d671a642"
+checksum = "7b72fe77fd39e4bd3eaa4412fd299a0be6b3dfe9d2597e2f1c20beb968f41d17"
 dependencies = [
 "js-sys",
 "wasm-bindgen",
--- a/7
+++ b/7
@ -1,7 +0,0 @@
-FROM rust:latest
-
-WORKDIR /usr/src/myapp
-
-RUN apt-get -y update && apt-get -y upgrade
-
-CMD ["/bin/bash"]
--- a/boa/Cargo.toml
+++ b/boa/Cargo.toml
@ -18,13 +18,13 @@ gc = { version = "0.3.5", features = ["derive"] }
 serde_json = "1.0.53"
 rand = "0.7.3"
 num-traits = "0.2.11"
-regex = "1.3.7"
+regex = "1.3.9"
 rustc-hash = "1.1.0"
 num-bigint = { version = "0.2.6", features = ["serde"] }
 bitflags = "1.2.1"

 # Optional Dependencies
-serde = { version = "1.0.110", features = ["derive"], optional = true }
+serde = { version = "1.0.111", features = ["derive"], optional = true }
 measureme = { version = "0.7.1", optional = true }
 once_cell = { version = "1.4.0", optional = true }

--- a/boa/benches/exec.rs
+++ b/boa/benches/exec.rs
@ -100,11 +100,209 @@ fn fibonacci(c: &mut Criterion) {
    });
 }

+static OBJECT_CREATION: &str = r#"
+(function () {
+    let test = {
+        my_prop: "hello",
+        another: 65,
+    };
+
+    return test;
+})();
+"#;
+
+fn object_creation(c: &mut Criterion) {
+    // Create new Realm and interpreter.
+    let realm = Realm::create();
+    let mut engine = Interpreter::new(realm);
+
+    // Lex all the tokens.
+    let mut lexer = Lexer::new(black_box(OBJECT_CREATION));
+    lexer.lex().expect("failed to lex");
+
+    // Parse the AST nodes.
+    let nodes = Parser::new(&black_box(lexer.tokens)).parse_all().unwrap();
+
+    // Execute the parsed nodes, passing them through a black box, to avoid over-optimizing by the compiler
+    c.bench_function("Object Creation (Execution)", move |b| {
+        b.iter(|| black_box(&nodes).run(&mut engine).unwrap())
+    });
+}
+
+static OBJECT_PROP_ACCESS_CONST: &str = r#"
+(function () {
+    let test = {
+        my_prop: "hello",
+        another: 65,
+    };
+
+    return test.my_prop;
+})();
+"#;
+
+fn object_prop_access_const(c: &mut Criterion) {
+    // Create new Realm and interpreter.
+    let realm = Realm::create();
+    let mut engine = Interpreter::new(realm);
+
+    // Lex all the tokens.
+    let mut lexer = Lexer::new(black_box(OBJECT_PROP_ACCESS_CONST));
+    lexer.lex().expect("failed to lex");
+
+    // Parse the AST nodes.
+    let nodes = Parser::new(&black_box(lexer.tokens)).parse_all().unwrap();
+
+    // Execute the parsed nodes, passing them through a black box, to avoid over-optimizing by the compiler
+    c.bench_function("Static Object Property Access (Execution)", move |b| {
+        b.iter(|| black_box(&nodes).run(&mut engine).unwrap())
+    });
+}
+
+static OBJECT_PROP_ACCESS_DYN: &str = r#"
+(function () {
+    let test = {
+        my_prop: "hello",
+        another: 65,
+    };
+
+    return test["my" + "_prop"];
+})();
+"#;
+
+fn object_prop_access_dyn(c: &mut Criterion) {
+    // Create new Realm and interpreter.
+    let realm = Realm::create();
+    let mut engine = Interpreter::new(realm);
+
+    // Lex all the tokens.
+    let mut lexer = Lexer::new(black_box(OBJECT_PROP_ACCESS_DYN));
+    lexer.lex().expect("failed to lex");
+
+    // Parse the AST nodes.
+    let nodes = Parser::new(&black_box(lexer.tokens)).parse_all().unwrap();
+
+    // Execute the parsed nodes, passing them through a black box, to avoid over-optimizing by the compiler
+    c.bench_function("Dynamic Object Property Access (Execution)", move |b| {
+        b.iter(|| black_box(&nodes).run(&mut engine).unwrap())
+    });
+}
+
+static REGEXP_LITERAL_CREATION: &str = r#"
+(function () {
+    let regExp = /hello/i;
+
+    return regExp;
+})();
+"#;
+
+fn regexp_literal_creation(c: &mut Criterion) {
+    // Create new Realm and interpreter.
+    let realm = Realm::create();
+    let mut engine = Interpreter::new(realm);
+
+    // Lex all the tokens.
+    let mut lexer = Lexer::new(black_box(REGEXP_LITERAL_CREATION));
+    lexer.lex().expect("failed to lex");
+
+    // Parse the AST nodes.
+    let nodes = Parser::new(&black_box(lexer.tokens)).parse_all().unwrap();
+
+    // Execute the parsed nodes, passing them through a black box, to avoid over-optimizing by the compiler
+    c.bench_function("RegExp Literal Creation (Execution)", move |b| {
+        b.iter(|| black_box(&nodes).run(&mut engine).unwrap())
+    });
+}
+
+static REGEXP_CREATION: &str = r#"
+(function () {
+    let regExp = new RegExp('hello', 'i');
+
+    return regExp;
+})();
+"#;
+
+fn regexp_creation(c: &mut Criterion) {
+    // Create new Realm and interpreter.
+    let realm = Realm::create();
+    let mut engine = Interpreter::new(realm);
+
+    // Lex all the tokens.
+    let mut lexer = Lexer::new(black_box(REGEXP_CREATION));
+    lexer.lex().expect("failed to lex");
+
+    // Parse the AST nodes.
+    let nodes = Parser::new(&black_box(lexer.tokens)).parse_all().unwrap();
+
+    // Execute the parsed nodes, passing them through a black box, to avoid over-optimizing by the compiler
+    c.bench_function("RegExp (Execution)", move |b| {
+        b.iter(|| black_box(&nodes).run(&mut engine).unwrap())
+    });
+}
+
+static REGEXP_LITERAL: &str = r#"
+(function () {
+    let regExp = /hello/i;
+
+    return regExp.test("Hello World");
+})();
+"#;
+
+fn regexp_literal(c: &mut Criterion) {
+    // Create new Realm and interpreter.
+    let realm = Realm::create();
+    let mut engine = Interpreter::new(realm);
+
+    // Lex all the tokens.
+    let mut lexer = Lexer::new(black_box(REGEXP_LITERAL));
+    lexer.lex().expect("failed to lex");
+
+    // Parse the AST nodes.
+    let nodes = Parser::new(&black_box(lexer.tokens)).parse_all().unwrap();
+
+    // Execute the parsed nodes, passing them through a black box, to avoid over-optimizing by the compiler
+    c.bench_function("RegExp Literal (Execution)", move |b| {
+        b.iter(|| black_box(&nodes).run(&mut engine).unwrap())
+    });
+}
+
+static REGEXP: &str = r#"
+(function () {
+    let regExp = new RegExp('hello', 'i');
+
+    return regExp.test("Hello World");
+})();
+"#;
+
+fn regexp(c: &mut Criterion) {
+    // Create new Realm and interpreter.
+    let realm = Realm::create();
+    let mut engine = Interpreter::new(realm);
+
+    // Lex all the tokens.
+    let mut lexer = Lexer::new(black_box(REGEXP));
+    lexer.lex().expect("failed to lex");
+
+    // Parse the AST nodes.
+    let nodes = Parser::new(&black_box(lexer.tokens)).parse_all().unwrap();
+
+    // Execute the parsed nodes, passing them through a black box, to avoid over-optimizing by the compiler
+    c.bench_function("RegExp (Execution)", move |b| {
+        b.iter(|| black_box(&nodes).run(&mut engine).unwrap())
+    });
+}
+
 criterion_group!(
    execution,
    create_realm,
    symbol_creation,
    for_loop_execution,
-    fibonacci
+    fibonacci,
+    object_creation,
+    object_prop_access_const,
+    object_prop_access_dyn,
+    regexp_literal_creation,
+    regexp_creation,
+    regexp_literal,
+    regexp,
 );
 criterion_main!(execution);
--- a/boa/benches/parser.rs
+++ b/boa/benches/parser.rs
@ -67,10 +67,55 @@ fn for_loop_parser(c: &mut Criterion) {
    });
 }

+static LONG_REPETITION: &str = r#"
+for (let a = 10; a < 100; a++) {
+    if (a < 10) {
+        console.log("impossible D:");
+    } else if (a < 50) {
+        console.log("starting");
+    } else {
+        console.log("finishing");
+    }
+}
+"#;
+
+fn long_file_parser(c: &mut Criterion) {
+    use std::{
+        fs::{self, File},
+        io::{BufWriter, Write},
+    };
+    // We include the lexing in the benchmarks, since they will get together soon, anyways.
+    const FILE_NAME: &str = "long_file_test.js";
+
+    {
+        let mut file = BufWriter::new(
+            File::create(FILE_NAME).unwrap_or_else(|_| panic!("could not create {}", FILE_NAME)),
+        );
+        for _ in 0..400 {
+            file.write_all(LONG_REPETITION.as_bytes())
+                .unwrap_or_else(|_| panic!("could not write {}", FILE_NAME));
+        }
+    }
+    c.bench_function("Long file (Parser)", move |b| {
+        b.iter(|| {
+            let file_str = fs::read_to_string(FILE_NAME)
+                .unwrap_or_else(|_| panic!("could not read {}", FILE_NAME));
+
+            let mut lexer = Lexer::new(black_box(&file_str));
+            lexer.lex().expect("failed to lex");
+
+            Parser::new(&black_box(lexer.tokens)).parse_all()
+        })
+    });
+
+    fs::remove_file(FILE_NAME).unwrap_or_else(|_| panic!("could not remove {}", FILE_NAME));
+}
+
 criterion_group!(
    parser,
    expression_parser,
    hello_world_parser,
-    for_loop_parser
+    for_loop_parser,
+    long_file_parser,
 );
 criterion_main!(parser);
--- a/boa_wasm/Cargo.toml
+++ b/boa_wasm/Cargo.toml
@ -12,7 +12,7 @@ edition = "2018"

 [dependencies]
 Boa = { path = "../boa" }
-wasm-bindgen = "0.2.62"
+wasm-bindgen = "0.2.63"

 [lib]
 crate-type = ["cdylib", "lib"]
--- a/yarn.lock
+++ b/yarn.lock
@ -7,17 +7,11 @@
  resolved "https://registry.yarnpkg.com/@types/anymatch/-/anymatch-1.3.1.tgz#336badc1beecb9dacc38bea2cf32adf627a8421a"
  integrity sha512-/+CRPXpBDpo2RK9C68N3b2cOvO0Cf5B9aPijHsoDQTHivnGSObdOF2BRQOYjojWTDy6nQvMjmqRXIxH55VjxxA==

-"@types/events@*":
-  version "3.0.0"
-  resolved "https://registry.yarnpkg.com/@types/events/-/events-3.0.0.tgz#2862f3f58a9a7f7c3e78d79f130dd4d71c25c2a7"
-  integrity sha512-EaObqwIvayI5a8dCzhFrjKzVwKLxjoG9T6Ppd5CEo07LRKfQ8Yokw54r5+Wq7FaBQ+yXRvQAYPrHwya1/UFt9g==
-
 "@types/glob@^7.1.1":
-  version "7.1.1"
-  resolved "https://registry.yarnpkg.com/@types/glob/-/glob-7.1.1.tgz#aa59a1c6e3fbc421e07ccd31a944c30eba521575"
-  integrity sha512-1Bh06cbWJUHMC97acuD6UMG29nMt0Aqz1vF3guLfG+kHHJhy3AyohZFFxYk2f7Q1SQIrNwvncxAE0N/9s70F2w==
+  version "7.1.2"
+  resolved "https://registry.yarnpkg.com/@types/glob/-/glob-7.1.2.tgz#06ca26521353a545d94a0adc74f38a59d232c987"
+  integrity sha512-VgNIkxK+j7Nz5P7jvUZlRvhuPSmsEfS03b0alKcq5V/STUKAa3Plemsn5mrQUO7am6OErJ4rhGEGJbACclrtRA==
  dependencies:
-    "@types/events" "*"
    "@types/minimatch" "*"
    "@types/node" "*"

@ -26,15 +20,20 @@
  resolved "https://registry.yarnpkg.com/@types/html-minifier-terser/-/html-minifier-terser-5.1.0.tgz#551a4589b6ee2cc9c1dff08056128aec29b94880"
  integrity sha512-iYCgjm1dGPRuo12+BStjd1HiVQqhlRhWDOQigNxn023HcjnhsiFz9pc6CzJj4HwDCSQca9bxTL4PxJDbkdm3PA==

+"@types/json-schema@^7.0.4":
+  version "7.0.5"
+  resolved "https://registry.yarnpkg.com/@types/json-schema/-/json-schema-7.0.5.tgz#dcce4430e64b443ba8945f0290fb564ad5bac6dd"
+  integrity sha512-7+2BITlgjgDhH0vvwZU/HZJVyk+2XUlvxXe8dFMedNX/aMkaOq++rMAFXc0tM7ij15QaWlbdQASBR9dihi+bDQ==
+
 "@types/minimatch@*":
  version "3.0.3"
  resolved "https://registry.yarnpkg.com/@types/minimatch/-/minimatch-3.0.3.tgz#3dca0e3f33b200fc7d1139c0cd96c1268cadfd9d"
  integrity sha512-tHq6qdbT9U1IRSGf14CL0pUlULksvY9OZ+5eEgl1N7t+OA3tGvNpxJCzuKQlsNgCVwbAs670L1vcVQi8j9HjnA==

 "@types/node@*":
-  version "14.0.5"
-  resolved "https://registry.yarnpkg.com/@types/node/-/node-14.0.5.tgz#3d03acd3b3414cf67faf999aed11682ed121f22b"
-  integrity sha512-90hiq6/VqtQgX8Sp0EzeIsv3r+ellbGj4URKj5j30tLlZvRUpnAe9YbYnjl3pJM93GyXU0tghHhvXHq+5rnCKA==
+  version "14.0.13"
+  resolved "https://registry.yarnpkg.com/@types/node/-/node-14.0.13.tgz#ee1128e881b874c371374c1f72201893616417c9"
+  integrity sha512-rouEWBImiRaSJsVA+ITTFM6ZxibuAlTuNOCyxVbwreu6k6+ujs7DfnU9o+PShFhET78pMBl3eH+AGSI5eOTkPA==

 "@types/source-list-map@*":
  version "0.1.2"
@ -54,18 +53,18 @@
    source-map "^0.6.1"

 "@types/webpack-sources@*":
-  version "0.1.7"
-  resolved "https://registry.yarnpkg.com/@types/webpack-sources/-/webpack-sources-0.1.7.tgz#0a330a9456113410c74a5d64180af0cbca007141"
-  integrity sha512-XyaHrJILjK1VHVC4aVlKsdNN5KBTwufMb43cQs+flGxtPAf/1Qwl8+Q0tp5BwEGaI8D6XT1L+9bSWXckgkjTLw==
+  version "1.4.0"
+  resolved "https://registry.yarnpkg.com/@types/webpack-sources/-/webpack-sources-1.4.0.tgz#e58f1f05f87d39a5c64cf85705bdbdbb94d4d57e"
+  integrity sha512-c88dKrpSle9BtTqR6ifdaxu1Lvjsl3C5OsfvuUbUwdXymshv1TkufUAXBajCCUM/f/TmnkZC/Esb03MinzSiXQ==
  dependencies:
    "@types/node" "*"
    "@types/source-list-map" "*"
-    source-map "^0.6.1"
+    source-map "^0.7.3"

 "@types/webpack@^4.4.31", "@types/webpack@^4.41.8":
-  version "4.41.13"
-  resolved "https://registry.yarnpkg.com/@types/webpack/-/webpack-4.41.13.tgz#988d114c8913d039b8a0e0502a7fe4f1f84f3d5e"
-  integrity sha512-RYmIHOWSxnTTa765N6jJBVE45pd2SYNblEYshVDduLw6RhocazNmRzE5/ytvBD8IkDMH6DI+bcrqxh8NILimBA==
+  version "4.41.17"
+  resolved "https://registry.yarnpkg.com/@types/webpack/-/webpack-4.41.17.tgz#0a69005e644d657c85b7d6ec1c826a71bebd1c93"
+  integrity sha512-6FfeCidTSHozwKI67gIVQQ5Mp0g4X96c2IXxX75hYEQJwST/i6NyZexP//zzMOBb+wG9jJ7oO8fk9yObP2HWAw==
  dependencies:
    "@types/anymatch" "*"
    "@types/node" "*"
@ -261,7 +260,7 @@ ajv-keywords@^3.1.0, ajv-keywords@^3.4.1:
  resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-3.4.1.tgz#ef916e271c64ac12171fd8384eaae6b2345854da"
  integrity sha512-RO1ibKvd27e6FEShVFfPALuHI3WjSVNeK5FIsmme/LYRNxjKuNj+Dt7bucLa6NdSv3JcVTyMlm9kGR84z1XpaQ==

-ajv@^6.1.0, ajv@^6.10.2, ajv@^6.12.0:
+ajv@^6.1.0, ajv@^6.10.2, ajv@^6.12.2:
  version "6.12.2"
  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.12.2.tgz#c629c5eced17baf314437918d2da88c99d5958cd"
  integrity sha512-k+V+hzjm5q/Mr8ef/1Y9goCmlsK4I6Sm74teeyGvFk1XrOsbsKLjEdrvny42CZ+a8sXbk8KWpY/bDwS+FLL2UQ==
@ -1347,9 +1346,9 @@ entities@^1.1.1:
  integrity sha512-f2LZMYl1Fzu7YSBKg+RoROelpOaNrcGmE9AZubeDfrCEia483oW4MI4VyFd5VNHIgQ/7qm1I0wUHK1eJnn2y2w==

 entities@^2.0.0:
-  version "2.0.2"
-  resolved "https://registry.yarnpkg.com/entities/-/entities-2.0.2.tgz#ac74db0bba8d33808bbf36809c3a5c3683531436"
-  integrity sha512-dmD3AvJQBUjKpcNkoqr+x+IF0SdRtPz9Vk0uTy4yWqga9ibB6s4v++QFWNohjiUGoMlF552ZvNyXDxz5iW0qmw==
+  version "2.0.3"
+  resolved "https://registry.yarnpkg.com/entities/-/entities-2.0.3.tgz#5c487e5742ab93c15abb5da22759b8590ec03b7f"
+  integrity sha512-MyoZ0jgnLvB2X3Lg5HqpFmn1kybDiIfEQmKzTb5apr51Rb+T3KdmMiqa70T+bhGnyv7bQ6WMj2QMHpGMmlrUYQ==

 errno@^0.1.3, errno@~0.1.7:
  version "0.1.7"
@ -1543,9 +1542,9 @@ extglob@^2.0.4:
    to-regex "^3.0.1"

 fast-deep-equal@^3.1.1:
-  version "3.1.1"
-  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-3.1.1.tgz#545145077c501491e33b15ec408c294376e94ae4"
-  integrity sha512-8UEa58QDLauDNfpbrX55Q9jrGHThw2ZMdOky5Gl1CDtVeJDPVrG4Jxx1N8jw2gkWaff5UUuX1KJd+9zGe2B+ZA==
+  version "3.1.3"
+  resolved "https://registry.yarnpkg.com/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz#3a7d56b559d6cbc3eb512325244e619a65c6c525"
+  integrity sha512-f3qQ9oQy9j2AhBe/H9VC91wLmKBCCU/gDOnKNAYG5hswO7BLKj09Hc5HYNz9cGI++xlpDCIgDaitVs03ATR84Q==

 fast-json-stable-stringify@^2.0.0:
  version "2.1.0"
@ -2195,9 +2194,9 @@ is-buffer@^1.1.5:
  integrity sha512-NcdALwpXkTm5Zvvbk7owOUSvVvBKDgKP5/ewfXEznmQFfs4ZRmanOeKBTjRVjka3QFoN6XJ+9F3USqfHqTaU5w==

 is-callable@^1.1.4, is-callable@^1.1.5:
-  version "1.1.5"
-  resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.1.5.tgz#f7e46b596890456db74e7f6e976cb3273d06faab"
-  integrity sha512-ESKv5sMCJB2jnHTWZ3O5itG+O128Hsus4K4Qh1h2/cgn2vbgnLSVqfV46AeJA9D5EeeLa9w81KUXMtn34zhX+Q==
+  version "1.2.0"
+  resolved "https://registry.yarnpkg.com/is-callable/-/is-callable-1.2.0.tgz#83336560b54a38e35e3a2df7afd0454d691468bb"
+  integrity sha512-pyVD9AaGLxtg6srb2Ng6ynWJqkHU9bEM087AKck0w8QwDarTfNcpIYoU8x8Hv2Icm8u6kFJM18Dag8lyqGkviw==

 is-data-descriptor@^0.1.4:
  version "0.1.4"
@ -2311,11 +2310,11 @@ is-plain-object@^2.0.3, is-plain-object@^2.0.4:
    isobject "^3.0.1"

 is-regex@^1.0.4, is-regex@^1.0.5:
-  version "1.0.5"
-  resolved "https://registry.yarnpkg.com/is-regex/-/is-regex-1.0.5.tgz#39d589a358bf18967f726967120b8fc1aed74eae"
-  integrity sha512-vlKW17SNq44owv5AQR3Cq0bQPEb8+kF3UKZ2fiZNOWtztYE5i0CzCZxFDwO58qAOWtxdBRVO/V5Qin1wjCqFYQ==
+  version "1.1.0"
+  resolved "https://registry.yarnpkg.com/is-regex/-/is-regex-1.1.0.tgz#ece38e389e490df0dc21caea2bd596f987f767ff"
+  integrity sha512-iI97M8KTWID2la5uYXlkbSDQIg4F6o1sYboZKKTDpnDQMLtUL86zxhgDet3Q2SriaYsyGqZ6Mn2SjbRKeLHdqw==
  dependencies:
-    has "^1.0.3"
+    has-symbols "^1.0.1"

 is-stream@^1.1.0:
  version "1.1.0"
@ -2611,9 +2610,9 @@ mime@1.6.0:
  integrity sha512-x0Vn8spI+wuJ1O6S7gnbaQg8Pxh4NNHb7KSINmEWKiPE4RKOplvijn+NkmYmmRgP68mc70j2EbeTFRsrswaQeg==

 mime@^2.4.4:
-  version "2.4.5"
-  resolved "https://registry.yarnpkg.com/mime/-/mime-2.4.5.tgz#d8de2ecb92982dedbb6541c9b6841d7f218ea009"
-  integrity sha512-3hQhEUF027BuxZjQA3s7rIv/7VCQPa27hN9u9g87sEkWaKwQPuXOkVKtOeiyUrnWqTDiOs8Ed2rwg733mB0R5w==
+  version "2.4.6"
+  resolved "https://registry.yarnpkg.com/mime/-/mime-2.4.6.tgz#e5b407c90db442f2beb5b162373d07b69affa4d1"
+  integrity sha512-RZKhC3EmpBchfTGBVb8fb+RL2cWyw/32lshnsETttkBAyAUXSGHxbEJWWRXc751DrIxG1q04b8QwMbAwkRPpUA==

 mimic-fn@^2.0.0:
  version "2.1.0"
@ -3085,9 +3084,9 @@ path-type@^3.0.0:
    pify "^3.0.0"

 pbkdf2@^3.0.3:
-  version "3.0.17"
-  resolved "https://registry.yarnpkg.com/pbkdf2/-/pbkdf2-3.0.17.tgz#976c206530617b14ebb32114239f7b09336e93a6"
-  integrity sha512-U/il5MsrZp7mGg3mSQfn742na2T+1/vHDCG5/iTI3X9MKUuYUZVLQhyRsg06mCgDBTd57TxzgZt7P+fYfjRLtA==
+  version "3.1.1"
+  resolved "https://registry.yarnpkg.com/pbkdf2/-/pbkdf2-3.1.1.tgz#cb8724b0fada984596856d1a6ebafd3584654b94"
+  integrity sha512-4Ejy1OPxi9f2tt1rRV7Go7zmfDQ+ZectEQz3VGUQhgq62HtIRPDyG/JtnwIxs6x3uNMwo2V7q1fMvKjb+Tnpqg==
  dependencies:
    create-hash "^1.1.2"
    create-hmac "^1.1.4"
@ -3196,9 +3195,9 @@ postcss-value-parser@^4.0.0, postcss-value-parser@^4.0.3:
  integrity sha512-97DXOFbQJhk71ne5/Mt6cOu6yxsSfM0QGQyl0L25Gca4yGWEGJaig7l7gbCX623VqTBNGLRLaVUCnNkcedlRSQ==

 postcss@^7.0.14, postcss@^7.0.16, postcss@^7.0.27, postcss@^7.0.5, postcss@^7.0.6:
-  version "7.0.30"
-  resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.30.tgz#cc9378beffe46a02cbc4506a0477d05fcea9a8e2"
-  integrity sha512-nu/0m+NtIzoubO+xdAlwZl/u5S5vi/y6BCsoL8D+8IxsD3XvBS8X4YEADNIVXKVuQvduiucnRv+vPIqj56EGMQ==
+  version "7.0.32"
+  resolved "https://registry.yarnpkg.com/postcss/-/postcss-7.0.32.tgz#4310d6ee347053da3433db2be492883d62cec59d"
+  integrity sha512-03eXong5NLnNCD05xscnGKGDZ98CyzoqPSMjOe6SuoQY7Z2hIj0Ld1g/O/UQRuOle2aRtiIRDg9tDcTGAkLfKw==
  dependencies:
    chalk "^2.4.2"
    source-map "^0.6.1"
@ -3312,7 +3311,7 @@ querystringify@^2.1.1:
  resolved "https://registry.yarnpkg.com/querystringify/-/querystringify-2.1.1.tgz#60e5a5fd64a7f8bfa4d2ab2ed6fdf4c85bad154e"
  integrity sha512-w7fLxIRCRT7U8Qu53jQnJyPkYZIaR4n5151KMfcJlO/A9397Wxb1amJvROTK6TOnp7PfoAmg/qXiNHI+08jRfA==

-randombytes@^2.0.0, randombytes@^2.0.1, randombytes@^2.0.5:
+randombytes@^2.0.0, randombytes@^2.0.1, randombytes@^2.0.5, randombytes@^2.1.0:
  version "2.1.0"
  resolved "https://registry.yarnpkg.com/randombytes/-/randombytes-2.1.0.tgz#df6f84372f0270dc65cdf6291349ab7a473d4f2a"
  integrity sha512-vYl3iOX+4CKUWuxGi9Ukhie6fsqXqS9FE2Zaic4tNFD2N2QQaXOMFbuKK4QmDHC0JO6B1Zp41J0LpT0oR68amQ==
@ -3531,11 +3530,12 @@ schema-utils@^1.0.0:
    ajv-keywords "^3.1.0"

 schema-utils@^2.6.5, schema-utils@^2.6.6:
-  version "2.6.6"
-  resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-2.6.6.tgz#299fe6bd4a3365dc23d99fd446caff8f1d6c330c"
-  integrity sha512-wHutF/WPSbIi9x6ctjGGk2Hvl0VOz5l3EKEuKbjPlB30mKZUzb9A5k9yEXRX3pwyqVLPvpfZZEllaFq/M718hA==
+  version "2.7.0"
+  resolved "https://registry.yarnpkg.com/schema-utils/-/schema-utils-2.7.0.tgz#17151f76d8eae67fbbf77960c33c676ad9f4efc7"
+  integrity sha512-0ilKFI6QQF5nxDZLFn2dMjvc4hjg/Wkg7rHd3jK6/A4a1Hl9VFdQWvgB1UMGoU94pad1P/8N7fMcEnLnSiju8A==
  dependencies:
-    ajv "^6.12.0"
+    "@types/json-schema" "^7.0.4"
+    ajv "^6.12.2"
    ajv-keywords "^3.4.1"

 select-hose@^2.0.0:
@ -3584,6 +3584,13 @@ serialize-javascript@^2.1.2:
  resolved "https://registry.yarnpkg.com/serialize-javascript/-/serialize-javascript-2.1.2.tgz#ecec53b0e0317bdc95ef76ab7074b7384785fa61"
  integrity sha512-rs9OggEUF0V4jUSecXazOYsLfu7OGK2qIn3c7IPBiffz32XniEp/TX9Xmc9LQfK2nQ2QKHvZ2oygKUGU0lG4jQ==

+serialize-javascript@^3.1.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/serialize-javascript/-/serialize-javascript-3.1.0.tgz#8bf3a9170712664ef2561b44b691eafe399214ea"
+  integrity sha512-JIJT1DGiWmIKhzRsG91aS6Ze4sFUrYbltlkg2onR5OrnNM02Kl/hnY/T4FN2omvyeBbQmMJv+K4cPOpGzOTFBg==
+  dependencies:
+    randombytes "^2.1.0"
+
 serve-index@^1.9.1:
  version "1.9.1"
  resolved "https://registry.yarnpkg.com/serve-index/-/serve-index-1.9.1.tgz#d3768d69b1e7d82e5ce050fff5b453bea12a9239"
@ -3757,6 +3764,11 @@ source-map@^0.6.0, source-map@^0.6.1, source-map@~0.6.0, source-map@~0.6.1:
  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.6.1.tgz#74722af32e9614e9c287a8d0bbde48b5e2f1a263"
  integrity sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==

+source-map@^0.7.3:
+  version "0.7.3"
+  resolved "https://registry.yarnpkg.com/source-map/-/source-map-0.7.3.tgz#5302f8169031735226544092e64981f751750383"
+  integrity sha512-CkCj6giN3S+n9qrYiBTX5gystlENnRW5jZeNLHpe6aue+SrHcG5VYwujhW9s4dY31mEGsxBDrHR6oI69fTXsaQ==
+
 spdy-transport@^3.0.0:
  version "3.0.0"
  resolved "https://registry.yarnpkg.com/spdy-transport/-/spdy-transport-3.0.0.tgz#00d4863a6400ad75df93361a1608605e5dcdcf31"
@ -3943,15 +3955,15 @@ tapable@^1.0.0, tapable@^1.1.3:
  integrity sha512-4WK/bYZmj8xLr+HUCODHGF1ZFzsYffasLUgEiMBY4fgtltdO6B4WJtlSbPaDTLpYTcGVwM2qLnFTICEcNxs3kA==

 terser-webpack-plugin@^1.4.3:
-  version "1.4.3"
-  resolved "https://registry.yarnpkg.com/terser-webpack-plugin/-/terser-webpack-plugin-1.4.3.tgz#5ecaf2dbdc5fb99745fd06791f46fc9ddb1c9a7c"
-  integrity sha512-QMxecFz/gHQwteWwSo5nTc6UaICqN1bMedC5sMtUc7y3Ha3Q8y6ZO0iCR8pq4RJC8Hjf0FEPEHZqcMB/+DFCrA==
+  version "1.4.4"
+  resolved "https://registry.yarnpkg.com/terser-webpack-plugin/-/terser-webpack-plugin-1.4.4.tgz#2c63544347324baafa9a56baaddf1634c8abfc2f"
+  integrity sha512-U4mACBHIegmfoEe5fdongHESNJWqsGU+W0S/9+BmYGVQDw1+c2Ow05TpMhxjPK1sRb7cuYq1BPl1e5YHJMTCqA==
  dependencies:
    cacache "^12.0.2"
    find-cache-dir "^2.1.0"
    is-wsl "^1.1.0"
    schema-utils "^1.0.0"
-    serialize-javascript "^2.1.2"
+    serialize-javascript "^3.1.0"
    source-map "^0.6.1"
    terser "^4.1.2"
    webpack-sources "^1.4.0"