add fuzz

fuzz/.gitignore

@@ -0,0 +1,3 @@
+target
+corpus
+artifacts

fuzz/Cargo.lock

@@ -0,0 +1,44 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "arbitrary"
+version = "1.0.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "577b08a4acd7b99869f863c50011b01eb73424ccc798ecd996f2e24817adfca7"
+
+[[package]]
+name = "cc"
+version = "1.0.71"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "79c2681d6594606957bbb8631c4b90a7fcaaa72cdb714743a437b156d6a7eedd"
+
+[[package]]
+name = "libfuzzer-sys"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "36a9a84a6e8b55dfefb04235e55edb2b9a2a18488fcae777a6bdaa6f06f1deb3"
+dependencies = [
+ "arbitrary",
+ "cc",
+ "once_cell",
+]
+
+[[package]]
+name = "once_cell"
+version = "1.8.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "692fcb63b64b1758029e0a96ee63e049ce8c5948587f2f7208df04625e5f6b56"
+
+[[package]]
+name = "script_lang"
+version = "0.1.0"
+
+[[package]]
+name = "script_lang-fuzz"
+version = "0.0.0"
+dependencies = [
+ "libfuzzer-sys",
+ "script_lang",
+]

fuzz/Cargo.toml

@@ -0,0 +1,31 @@
+[package]
+name = "script_lang-fuzz"
+version = "0.0.0"
+authors = ["Automatically generated"]
+publish = false
+edition = "2018"
+
+[package.metadata]
+cargo-fuzz = true
+
+[dependencies]
+libfuzzer-sys = "0.4"
+
+[dependencies.script_lang]
+path = ".."
+
+# Prevent this from interfering with workspaces
+[workspace]
+members = ["."]
+
+[[bin]]
+name = "lex"
+path = "fuzz_targets/lex.rs"
+test = false
+doc = false
+
+[[bin]]
+name = "lex_parse"
+path = "fuzz_targets/lex_parse.rs"
+test = false
+doc = false

fuzz/fuzz_targets/lex.rs

@@ -0,0 +1,7 @@
+#![no_main]
+use libfuzzer_sys::fuzz_target;
+
+fuzz_target!(|data: String| {
+    let lexer = script_lang::Lexer::lex(&data);
+    let _tokens = lexer.collect::<Vec<_>>();
+});

fuzz/fuzz_targets/lex_parse.rs

@@ -0,0 +1,6 @@
+#![no_main]
+use libfuzzer_sys::fuzz_target;
+
+fuzz_target!(|data: &[u8]| {
+    // fuzzed code goes here
+});

src/bird/mod.rs

@@ -1,3 +1,5 @@
+#![allow(dead_code)]
+
 mod mem;
 
 use crate::ast::Program;

src/lib.rs

@@ -4,6 +4,8 @@ mod errors;
 mod lex;
 mod parse;
 
+pub use lex::*;
+
 pub fn run_program(program: &str) {
     let lexer = lex::Lexer::lex(program);
     let (success, errors) = lexer.partition::<Vec<_>, _>(|result| result.is_ok());