feat(build): add option to build specific dir

crates/cli/src/opts/build/core.rs

@@ -126,6 +126,11 @@ pub struct CoreBuildArgs {
  #[serde(skip)]
  pub skip: Option<Vec<SkipBuildFilter>>,
 
+ /// Build source files from specified paths.
+ #[arg(long, short, num_args(0..))]
+ #[serde(skip)]
+ pub paths: Option<Vec<PathBuf>>,
+
  #[command(flatten)]
  #[serde(flatten)]
  pub compiler: CompilerArgs,

crates/forge/bin/cmd/build.rs

@@ -3,7 +3,11 @@ use clap::Parser;
 use eyre::Result;
 use foundry_cli::{opts::CoreBuildArgs, utils::LoadConfig};
 use foundry_common::compile::ProjectCompiler;
-use foundry_compilers::{Project, ProjectCompileOutput};
+use foundry_compilers::{
+ compilers::{multi::MultiCompilerLanguage, Language},
+ utils::source_files_iter,
+ Project, ProjectCompileOutput,
+};
 use foundry_config::{
  figment::{
  self,
@@ -80,7 +84,16 @@ impl BuildArgs {
 
  let project = config.project()?;
 
+ // Collect sources to compile if build subdirectories specified.
+ let mut files = vec![];
+ if let Some(dirs) = self.args.paths {
+ for dir in dirs {
+ files.extend(source_files_iter(dir, MultiCompilerLanguage::FILE_EXTENSIONS));
+ }
+ }
+
  let compiler = ProjectCompiler::new()
+ .files(files)
  .print_names(self.names)
  .print_sizes(self.sizes)
  .quiet(self.format_json)

crates/forge/tests/cli/cmd.rs

@@ -1667,6 +1667,69 @@ function test_run() external {}
  );
 });
 
+forgetest_init!(can_build_specific_paths, |prj, cmd| {
+ prj.wipe();
+ prj.add_source(
+ "Counter.sol",
+ r"
+contract Counter {
+function count() external {}
+}",
+ )
+ .unwrap();
+ prj.add_test(
+ "Foo.sol",
+ r"
+contract Foo {
+function test_foo() external {}
+}",
+ )
+ .unwrap();
+ prj.add_test(
+ "Bar.sol",
+ r"
+contract Bar {
+function test_bar() external {}
+}",
+ )
+ .unwrap();
+
+ // Build 2 files within test dir
+ prj.clear();
+ cmd.args(["build", "--paths", "test", "--force"]);
+ cmd.unchecked_output().stdout_matches_path(
+ PathBuf::from(env!("CARGO_MANIFEST_DIR"))
+ .join("tests/fixtures/can_build_path_with_two_files.stdout"),
+ );
+
+ // Build one file within src dir
+ prj.clear();
+ cmd.forge_fuse();
+ cmd.args(["build", "--paths", "src", "--force"]);
+ cmd.unchecked_output().stdout_matches_path(
+ PathBuf::from(env!("CARGO_MANIFEST_DIR"))
+ .join("tests/fixtures/can_build_path_with_one_file.stdout"),
+ );
+
+ // Build 3 files from test and src dirs
+ prj.clear();
+ cmd.forge_fuse();
+ cmd.args(["build", "--paths", "src", "test", "--force"]);
+ cmd.unchecked_output().stdout_matches_path(
+ PathBuf::from(env!("CARGO_MANIFEST_DIR"))
+ .join("tests/fixtures/can_build_path_with_three_files.stdout"),
+ );
+
+ // Build single test file
+ prj.clear();
+ cmd.forge_fuse();
+ cmd.args(["build", "--paths", "test/Bar.sol", "--force"]);
+ cmd.unchecked_output().stdout_matches_path(
+ PathBuf::from(env!("CARGO_MANIFEST_DIR"))
+ .join("tests/fixtures/can_build_path_with_one_file.stdout"),
+ );
+});
+
 // checks that build --sizes includes all contracts even if unchanged
 forgetest_init!(can_build_sizes_repeatedly, |prj, cmd| {
  prj.clear_cache();

crates/forge/tests/fixtures/can_build_path_with_one_file.stdout

@@ -0,0 +1,3 @@
+Compiling 1 files with 0.8.23
+Solc 0.8.23 finished in 33.25ms
+Compiler run successful!

crates/forge/tests/fixtures/can_build_path_with_three_files.stdout

@@ -0,0 +1,3 @@
+Compiling 3 files with 0.8.23
+Solc 0.8.23 finished in 33.25ms
+Compiler run successful!

crates/forge/tests/fixtures/can_build_path_with_two_files.stdout

@@ -0,0 +1,3 @@
+Compiling 2 files with 0.8.23
+Solc 0.8.23 finished in 33.25ms
+Compiler run successful!