# Copyright 2020 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

import("//build/rust/rustc_binary.gni")
import("//build/rust/rustc_fuzzer.gni")
import("//build/rust/rustc_library.gni")

# Defaults should generally work if the fuzz target function name matches the
# fuzzer name.
rustc_fuzzer("toy_example_arbitrary") {
  sources = [ "src/lib.rs" ]
}

# If the fuzz target function name differs from the fuzzer name, provide it via
# the `rustfunction` parameter.
rustc_fuzzer("toy_example_raw_bytes") {
  rustfunction = "toy_example_u8"

  sources = [ "src/lib.rs" ]
}

# If it is infeasible to refactor a Rust binary into a library, set the
# `source_root` explicitly and conditionally exclude symbols like `main` from
# compilation using `#[cfg(not(fuzz))]`.
rustc_fuzzer("toy_example_with_main") {
  source_root = "src/main.rs"
  deps = [ ":helper" ]

  sources = [ "src/main.rs" ]
}

# TODO
rustc_library("helper") {
  source_root = "helper/lib.rs"
  deps = [ "//src/lib/fuzzing/rust:fuzz" ]

  sources = [ "helper/lib.rs" ]
}

rustc_fuzzer("toy_example_same_name") {
  deps = [ ":helper" ]

  sources = [ "src/lib.rs" ]
}

# Fake tool to demostrate that fuzzers can exist alongside Rust binaries.
rustc_binary("toy_example_bin") {
  name = "toy_example"
  deps = [
    ":helper",
    "//src/lib/fuzzing/rust:fuzz",
  ]

  sources = [ "src/main.rs" ]
}
# TODO(fxbug.dev/69449): create a `fuchsia_package` label that demonstrates
# how to wrap toy_example_bin in a fuchsia_package.