moved all crates into seperate folder + related path fixes

crates/compiler/parse/fuzz/.gitignore

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+target
+corpus
+artifacts

crates/compiler/parse/fuzz/Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+[[package]]
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+ "bitmaps",
+ "rand_core 0.5.1",
+ "rand_xoshiro",
+ "sized-chunks",
+ "typenum",
+ "version_check",
+]
+
+[[package]]
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+dependencies = [
+ "bitmaps",
+ "rand_core 0.5.1",
+ "rand_xoshiro",
+ "sized-chunks",
+ "typenum",
+ "version_check",
+]
+
+[[package]]
+name = "inlinable_string"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb6ee2a7da03bfc3b66ca47c92c2e392fcc053ea040a85561749b026f7aad09a"
+
+[[package]]
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+
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+dependencies = [
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+ "cc",
+]
+
+[[package]]
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+dependencies = [
+ "rand_core 0.5.1",
+]
+
+[[package]]
+name = "roc_collections"
+version = "0.1.0"
+dependencies = [
+ "bumpalo",
+ "im",
+ "im-rc",
+ "wyhash",
+]
+
+[[package]]
+name = "roc_module"
+version = "0.1.0"
+dependencies = [
+ "bumpalo",
+ "inlinable_string",
+ "lazy_static",
+ "roc_collections",
+ "roc_region",
+]
+
+[[package]]
+name = "roc_parse"
+version = "0.1.0"
+dependencies = [
+ "bumpalo",
+ "encode_unicode",
+ "inlinable_string",
+ "roc_collections",
+ "roc_module",
+ "roc_region",
+]
+
+[[package]]
+name = "roc_parse-fuzz"
+version = "0.0.0"
+dependencies = [
+ "bumpalo",
+ "libfuzzer-sys",
+ "roc_parse",
+]
+
+[[package]]
+name = "roc_region"
+version = "0.1.0"
+
+[[package]]
+name = "sized-chunks"
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+checksum = "d59044ea371ad781ff976f7b06480b9f0180e834eda94114f2afb4afc12b7718"
+dependencies = [
+ "bitmaps",
+ "typenum",
+]
+
+[[package]]
+name = "typenum"
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "373c8a200f9e67a0c95e62a4f52fbf80c23b4381c05a17845531982fa99e6b33"
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+dependencies = [
+ "rand_core 0.4.2",
+]

crates/compiler/parse/fuzz/Cargo.toml

@@ -0,0 +1,38 @@
+[package]
+name = "roc_parse-fuzz"
+version = "0.0.0"
+authors = ["Automatically generated"]
+publish = false
+edition = "2021"
+
+[package.metadata]
+cargo-fuzz = true
+
+[dependencies]
+libfuzzer-sys = "0.3"
+bumpalo = { version = "3.6.1", features = ["collections"] }
+
+[dependencies.roc_parse]
+path = ".."
+
+# Prevent this from interfering with workspaces
+[workspace]
+members = ["."]
+
+[[bin]]
+name = "fuzz_expr"
+path = "fuzz_targets/fuzz_expr.rs"
+test = false
+doc = false
+
+[[bin]]
+name = "fuzz_defs"
+path = "fuzz_targets/fuzz_defs.rs"
+test = false
+doc = false
+
+[[bin]]
+name = "fuzz_header"
+path = "fuzz_targets/fuzz_header.rs"
+test = false
+doc = false

crates/compiler/parse/fuzz/README.md

@@ -0,0 +1,11 @@
+To setup fuzzing you will need to install cargo-fuzz and run with rust nightly:
+
+```
+$ cargo install cargo-fuzz
+$ cargo +nightly fuzz run -j<cores> <target> -- -dict=dict.txt
+```
+
+The different targets can be found by running `cargo fuzz list`.
+
+When a bug is found, it will be reported with commands to run it again and look for a minimized version.
+If you are going to file a bug, please minimize the input before filing the bug.

crates/compiler/parse/fuzz/dict.txt

@@ -0,0 +1,35 @@
+"if"
+"then"
+"else"
+"when"
+"as"
+"is"
+"expect"
+
+"app"
+"platform"
+"provides"
+"requires"
+"exposes"
+"imports"
+"effects"
+"interface"
+
+"|>"
+"=="
+"!="
+"&&"
+"||"
+"+"
+"*"
+"-"
+"//"
+"/"
+"<="
+"<"
+">="
+">"
+"^"
+"%"
+
+"->"

crates/compiler/parse/fuzz/fuzz_targets/fuzz_defs.rs

@@ -0,0 +1,11 @@
+#![no_main]
+use bumpalo::Bump;
+use libfuzzer_sys::fuzz_target;
+use roc_parse::test_helpers::parse_defs_with;
+
+fuzz_target!(|data: &[u8]| {
+    if let Ok(input) = std::str::from_utf8(data) {
+        let arena = Bump::new();
+        let _actual = parse_defs_with(&arena, input.trim());
+    }
+});

crates/compiler/parse/fuzz/fuzz_targets/fuzz_expr.rs

@@ -0,0 +1,11 @@
+#![no_main]
+use bumpalo::Bump;
+use libfuzzer_sys::fuzz_target;
+use roc_parse::test_helpers::parse_expr_with;
+
+fuzz_target!(|data: &[u8]| {
+    if let Ok(input) = std::str::from_utf8(data) {
+        let arena = Bump::new();
+        let _actual = parse_expr_with(&arena, input.trim());
+    }
+});

crates/compiler/parse/fuzz/fuzz_targets/fuzz_header.rs

@@ -0,0 +1,11 @@
+#![no_main]
+use bumpalo::Bump;
+use libfuzzer_sys::fuzz_target;
+use roc_parse::test_helpers::parse_header_with;
+
+fuzz_target!(|data: &[u8]| {
+    if let Ok(input) = std::str::from_utf8(data) {
+        let arena = Bump::new();
+        let _actual = parse_header_with(&arena, input.trim());
+    }
+});