From 985ae0bfd7eded06bb8efe7a12196311a5df5b8d Mon Sep 17 00:00:00 2001
From: Andrew Morris <voltrevo@gmail.com>
Date: Tue, 19 Apr 2022 22:11:35 +1000
Subject: [PATCH] Run typescript lexer example

---
 Cargo.lock  | 63 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 Cargo.toml  |  1 +
 src/main.rs | 43 +++++++++++++++++++++++++++++++++++-
 3 files changed, 106 insertions(+), 1 deletion(-)

diff --git a/Cargo.lock b/Cargo.lock
index 89a0341..d93fbb8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -46,6 +46,17 @@ dependencies = [
  "syn",
 ]
 
+[[package]]
+name = "atty"
+version = "0.2.14"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d9b39be18770d11421cdb1b9947a45dd3f37e93092cbf377614828a319d5fee8"
+dependencies = [
+ "hermit-abi",
+ "libc",
+ "winapi",
+]
+
 [[package]]
 name = "autocfg"
 version = "1.1.0"
@@ -174,6 +185,15 @@ dependencies = [
  "wasi",
 ]
 
+[[package]]
+name = "hermit-abi"
+version = "0.1.19"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "62b467343b94ba476dcb2500d242dadbb39557df889310ac77c5d99100aaac33"
+dependencies = [
+ "libc",
+]
+
 [[package]]
 name = "ident_case"
 version = "1.0.1"
@@ -624,6 +644,7 @@ checksum = "f1cf725d3f2283e3bbc8f7803a3f39c0a2fdd81f7cb26dac7afa58b0ffe6299c"
 dependencies = [
  "ahash",
  "ast_node",
+ "atty",
  "better_scoped_tls",
  "cfg-if",
  "debug_unreachable",
@@ -637,6 +658,7 @@ dependencies = [
  "string_cache",
  "swc_eq_ignore_macros",
  "swc_visit",
+ "termcolor",
  "tracing",
  "unicode-width",
  "url",
@@ -736,6 +758,15 @@ dependencies = [
  "unicode-xid",
 ]
 
+[[package]]
+name = "termcolor"
+version = "1.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bab24d30b911b2376f3a13cc2cd443142f0c81dda04c118693e35b3835757755"
+dependencies = [
+ "winapi-util",
+]
+
 [[package]]
 name = "tinyvec"
 version = "1.5.1"
@@ -847,6 +878,7 @@ dependencies = [
 name = "value_script"
 version = "0.1.0"
 dependencies = [
+ "swc_common",
  "swc_ecma_parser",
 ]
 
@@ -868,6 +900,37 @@ version = "0.10.2+wasi-snapshot-preview1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "fd6fbd9a79829dd1ad0cc20627bf1ed606756a7f77edff7b66b7064f9cb327c6"
 
+[[package]]
+name = "winapi"
+version = "0.3.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5c839a674fcd7a98952e593242ea400abe93992746761e38641405d28b00f419"
+dependencies = [
+ "winapi-i686-pc-windows-gnu",
+ "winapi-x86_64-pc-windows-gnu",
+]
+
+[[package]]
+name = "winapi-i686-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
+
+[[package]]
+name = "winapi-util"
+version = "0.1.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "70ec6ce85bb158151cae5e5c87f95a8e97d2c0c4b001223f33a334e3ce5de178"
+dependencies = [
+ "winapi",
+]
+
+[[package]]
+name = "winapi-x86_64-pc-windows-gnu"
+version = "0.4.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
+
 [[package]]
 name = "windows-sys"
 version = "0.34.0"
diff --git a/Cargo.toml b/Cargo.toml
index 65228dd..ff330d0 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -6,4 +6,5 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+swc_common = { version = "0.17.22", features=["tty-emitter"] }
 swc_ecma_parser = "0.102.2"
diff --git a/src/main.rs b/src/main.rs
index e7a11a9..f98aa77 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,3 +1,44 @@
+use swc_common::{
+    self,
+    errors::{ColorConfig, Handler},
+    sync::Lrc,
+    FileName, SourceMap,
+};
+use swc_ecma_parser::{lexer::Lexer, Capturing, Parser, StringInput, Syntax};
+
 fn main() {
-    println!("Hello, world!");
+    let cm: Lrc<SourceMap> = Default::default();
+    let handler = Handler::with_tty_emitter(ColorConfig::Auto, true, false, Some(cm.clone()));
+
+    // Real usage
+    // let fm = cm
+    //     .load_file(Path::new("test.js"))
+    //     .expect("failed to load test.js");
+
+    let fm = cm.new_source_file(
+        FileName::Custom("test.js".into()),
+        "interface Foo {}".into(),
+    );
+
+    let lexer = Lexer::new(
+        Syntax::Typescript(Default::default()),
+        Default::default(),
+        StringInput::from(&*fm),
+        None,
+    );
+
+    let capturing = Capturing::new(lexer);
+
+    let mut parser = Parser::new_from(capturing);
+
+    for e in parser.take_errors() {
+        e.into_diagnostic(&handler).emit();
+    }
+
+    let _module = parser
+        .parse_typescript_module()
+        .map_err(|e| e.into_diagnostic(&handler).emit())
+        .expect("Failed to parse module.");
+
+    println!("Tokens: {:?}", parser.input().take());
 }