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add --compile-only flag for syntax/compile validation #6943

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Jawfish wants to merge 7 commits into from
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add --compile-only flag for syntax/compile validation #6943

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acc69e6
add --compile-only cli flag and runmode variant
Jawfish Feb 1, 2026
65f8f1e
implement compile-only mode handler
Jawfish Feb 1, 2026
ab1d681
add unit test for compile-only mode
Jawfish Feb 1, 2026
0fd1523
Merge branch 'main' into add-compile-only-flag
Jawfish Feb 1, 2026
b9d1330
fix --compile-only option termination
Jawfish Feb 1, 2026
2ad616c
exit non-zero when no files specified
Jawfish Feb 1, 2026
dde30cd
add docstring for compileonly variant
Jawfish Feb 1, 2026
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add --compile-only cli flag and runmode variant
  • Loading branch information
@Jawfish
Jawfish committed Feb 1, 2026
commit acc69e6b7bd099696498626385ae2967abf04be8
19 changes: 17 additions & 2 deletions src/settings.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@ pub enum RunMode {
Module(String),
InstallPip(InstallPipMode),
Repl,
CompileOnly(Vec<String>),
}

pub enum InstallPipMode {
Expand Down Expand Up @@ -52,6 +53,7 @@ struct CliArgs {
warning_control: Vec<String>,
implementation_option: Vec<String>,
check_hash_based_pycs: CheckHashPycsMode,
compile_only: bool,

#[cfg(feature = "flame-it")]
profile_output: Option<std::ffi::OsString>,
Expand Down Expand Up @@ -100,7 +102,8 @@ Options (and corresponding environment variables):
--help-all: print complete help information and exit

RustPython extensions:

--compile-only file ... : compile files without executing (terminates option list)
--install-pip [ensurepip|get-pip] : install pip using specified method

Arguments:
file : program read from script file
Expand Down Expand Up @@ -150,6 +153,7 @@ fn parse_args() -> Result<(CliArgs, RunMode, Vec<String>), lexopt::Error> {
Long("check-hash-based-pycs") => {
args.check_hash_based_pycs = parser.value()?.parse()?
}
Long("compile-only") => args.compile_only = true,

// TODO: make these more specific
Long("help-env") => help(parser),
Expand Down Expand Up @@ -179,6 +183,13 @@ fn parse_args() -> Result<(CliArgs, RunMode, Vec<String>), lexopt::Error> {
}
Value(script_name) => {
let script_name = script_name.string()?;
if args.compile_only {
return Ok((
args,
RunMode::CompileOnly(argv(script_name, parser)?),
vec![],
));
}
let mode = if script_name == "-" {
RunMode::Repl
} else {
Expand All @@ -189,7 +200,11 @@ fn parse_args() -> Result<(CliArgs, RunMode, Vec<String>), lexopt::Error> {
_ => return Err(arg.unexpected()),
}
}
Ok((args, RunMode::Repl, vec![]))
if args.compile_only {
Ok((args, RunMode::CompileOnly(vec![]), vec![]))
} else {
Ok((args, RunMode::Repl, vec![]))
}
}

fn help(parser: lexopt::Parser) -> ! {
Expand Down