Command-line utilty to print the parse tree

1 files changed, 20 insertions, 0 deletions

diff --git a/src/bin/parse-rust.rs b/src/bin/parse-rust.rs
new file mode 100644
index 000000000..3c13e732e
--- /dev/null
+++ b/src/bin/parse-rust.rs
@@ -0,0 +1,20 @@
+extern crate libsyntax2;
+
+use std::io::Read;
+
+use libsyntax2::{tokenize, parse};
+use libsyntax2::utils::dump_tree;
+
+fn main() {
+    let text = read_input();
+    let tokens = tokenize(&text);
+    let file = parse(text, &tokens);
+    let tree = dump_tree(&file);
+    println!("{}", tree);
+}
+
+fn read_input() -> String {
+    let mut buff = String::new();
+    ::std::io::stdin().read_to_string(&mut buff).unwrap();
+    buff
+}