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https://github.com/rust-lang/rust.git
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Move -l option parsing into its own submodule
No functional change (yet).
This commit is contained in:
Zalathar
parent
2902bca654
commit
478db489b3
@ -30,17 +30,18 @@ use rustc_target::spec::{
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};
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use tracing::debug;
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pub use crate::config::cfg::{Cfg, CheckCfg, ExpectedValues};
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use crate::config::native_libs::parse_libs;
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use crate::errors::FileWriteFail;
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pub use crate::options::*;
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use crate::search_paths::SearchPath;
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use crate::utils::{CanonicalizedPath, NativeLib, NativeLibKind};
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use crate::utils::CanonicalizedPath;
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use crate::{EarlyDiagCtxt, HashStableContext, Session, filesearch, lint};
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mod cfg;
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mod native_libs;
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pub mod sigpipe;
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pub use cfg::{Cfg, CheckCfg, ExpectedValues};
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/// The different settings that the `-C strip` flag can have.
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#[derive(Clone, Copy, PartialEq, Hash, Debug)]
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pub enum Strip {
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@ -2134,143 +2135,6 @@ fn parse_assert_incr_state(
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}
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}
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fn parse_native_lib_kind(
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early_dcx: &EarlyDiagCtxt,
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matches: &getopts::Matches,
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kind: &str,
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) -> (NativeLibKind, Option<bool>) {
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let (kind, modifiers) = match kind.split_once(':') {
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None => (kind, None),
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Some((kind, modifiers)) => (kind, Some(modifiers)),
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};
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let kind = match kind {
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"static" => NativeLibKind::Static { bundle: None, whole_archive: None },
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"dylib" => NativeLibKind::Dylib { as_needed: None },
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"framework" => NativeLibKind::Framework { as_needed: None },
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"link-arg" => {
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if !nightly_options::is_unstable_enabled(matches) {
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let why = if nightly_options::match_is_nightly_build(matches) {
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" and only accepted on the nightly compiler"
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} else {
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", the `-Z unstable-options` flag must also be passed to use it"
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};
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early_dcx.early_fatal(format!("library kind `link-arg` is unstable{why}"))
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}
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NativeLibKind::LinkArg
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}
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_ => early_dcx.early_fatal(format!(
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"unknown library kind `{kind}`, expected one of: static, dylib, framework, link-arg"
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)),
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};
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match modifiers {
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None => (kind, None),
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Some(modifiers) => parse_native_lib_modifiers(early_dcx, kind, modifiers, matches),
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}
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}
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fn parse_native_lib_modifiers(
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early_dcx: &EarlyDiagCtxt,
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mut kind: NativeLibKind,
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modifiers: &str,
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matches: &getopts::Matches,
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) -> (NativeLibKind, Option<bool>) {
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let mut verbatim = None;
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for modifier in modifiers.split(',') {
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let (modifier, value) = match modifier.strip_prefix(['+', '-']) {
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Some(m) => (m, modifier.starts_with('+')),
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None => early_dcx.early_fatal(
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"invalid linking modifier syntax, expected '+' or '-' prefix \
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before one of: bundle, verbatim, whole-archive, as-needed",
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),
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};
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let report_unstable_modifier = || {
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if !nightly_options::is_unstable_enabled(matches) {
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let why = if nightly_options::match_is_nightly_build(matches) {
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" and only accepted on the nightly compiler"
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} else {
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", the `-Z unstable-options` flag must also be passed to use it"
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};
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early_dcx.early_fatal(format!("linking modifier `{modifier}` is unstable{why}"))
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}
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};
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let assign_modifier = |dst: &mut Option<bool>| {
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if dst.is_some() {
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let msg = format!("multiple `{modifier}` modifiers in a single `-l` option");
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early_dcx.early_fatal(msg)
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} else {
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*dst = Some(value);
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}
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};
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match (modifier, &mut kind) {
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("bundle", NativeLibKind::Static { bundle, .. }) => assign_modifier(bundle),
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("bundle", _) => early_dcx.early_fatal(
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"linking modifier `bundle` is only compatible with `static` linking kind",
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),
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("verbatim", _) => assign_modifier(&mut verbatim),
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("whole-archive", NativeLibKind::Static { whole_archive, .. }) => {
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assign_modifier(whole_archive)
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}
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("whole-archive", _) => early_dcx.early_fatal(
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"linking modifier `whole-archive` is only compatible with `static` linking kind",
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),
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("as-needed", NativeLibKind::Dylib { as_needed })
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| ("as-needed", NativeLibKind::Framework { as_needed }) => {
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report_unstable_modifier();
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assign_modifier(as_needed)
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}
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("as-needed", _) => early_dcx.early_fatal(
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"linking modifier `as-needed` is only compatible with \
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`dylib` and `framework` linking kinds",
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),
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// Note: this error also excludes the case with empty modifier
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// string, like `modifiers = ""`.
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_ => early_dcx.early_fatal(format!(
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"unknown linking modifier `{modifier}`, expected one \
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of: bundle, verbatim, whole-archive, as-needed"
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)),
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}
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}
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(kind, verbatim)
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}
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fn parse_libs(early_dcx: &EarlyDiagCtxt, matches: &getopts::Matches) -> Vec<NativeLib> {
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matches
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.opt_strs("l")
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.into_iter()
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.map(|s| {
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// Parse string of the form "[KIND[:MODIFIERS]=]lib[:new_name]",
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// where KIND is one of "dylib", "framework", "static", "link-arg" and
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// where MODIFIERS are a comma separated list of supported modifiers
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// (bundle, verbatim, whole-archive, as-needed). Each modifier is prefixed
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// with either + or - to indicate whether it is enabled or disabled.
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// The last value specified for a given modifier wins.
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let (name, kind, verbatim) = match s.split_once('=') {
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None => (s, NativeLibKind::Unspecified, None),
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Some((kind, name)) => {
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let (kind, verbatim) = parse_native_lib_kind(early_dcx, matches, kind);
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(name.to_string(), kind, verbatim)
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}
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};
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let (name, new_name) = match name.split_once(':') {
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None => (name, None),
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Some((name, new_name)) => (name.to_string(), Some(new_name.to_owned())),
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};
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if name.is_empty() {
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early_dcx.early_fatal("library name must not be empty");
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}
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NativeLib { name, new_name, kind, verbatim }
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})
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.collect()
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}
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pub fn parse_externs(
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early_dcx: &EarlyDiagCtxt,
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matches: &getopts::Matches,
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140
compiler/rustc_session/src/config/native_libs.rs
Normal file
140
compiler/rustc_session/src/config/native_libs.rs
Normal file
@ -0,0 +1,140 @@
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use crate::EarlyDiagCtxt;
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use crate::config::nightly_options;
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use crate::utils::{NativeLib, NativeLibKind};
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pub(crate) fn parse_libs(early_dcx: &EarlyDiagCtxt, matches: &getopts::Matches) -> Vec<NativeLib> {
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matches
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.opt_strs("l")
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.into_iter()
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.map(|s| {
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// Parse string of the form "[KIND[:MODIFIERS]=]lib[:new_name]",
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// where KIND is one of "dylib", "framework", "static", "link-arg" and
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// where MODIFIERS are a comma separated list of supported modifiers
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// (bundle, verbatim, whole-archive, as-needed). Each modifier is prefixed
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// with either + or - to indicate whether it is enabled or disabled.
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// The last value specified for a given modifier wins.
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let (name, kind, verbatim) = match s.split_once('=') {
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None => (s, NativeLibKind::Unspecified, None),
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Some((kind, name)) => {
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let (kind, verbatim) = parse_native_lib_kind(early_dcx, matches, kind);
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(name.to_string(), kind, verbatim)
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}
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};
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let (name, new_name) = match name.split_once(':') {
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None => (name, None),
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Some((name, new_name)) => (name.to_string(), Some(new_name.to_owned())),
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};
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if name.is_empty() {
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early_dcx.early_fatal("library name must not be empty");
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}
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NativeLib { name, new_name, kind, verbatim }
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})
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.collect()
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}
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fn parse_native_lib_kind(
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early_dcx: &EarlyDiagCtxt,
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matches: &getopts::Matches,
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kind: &str,
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) -> (NativeLibKind, Option<bool>) {
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let (kind, modifiers) = match kind.split_once(':') {
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None => (kind, None),
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Some((kind, modifiers)) => (kind, Some(modifiers)),
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};
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let kind = match kind {
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"static" => NativeLibKind::Static { bundle: None, whole_archive: None },
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"dylib" => NativeLibKind::Dylib { as_needed: None },
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"framework" => NativeLibKind::Framework { as_needed: None },
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"link-arg" => {
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if !nightly_options::is_unstable_enabled(matches) {
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let why = if nightly_options::match_is_nightly_build(matches) {
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" and only accepted on the nightly compiler"
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} else {
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", the `-Z unstable-options` flag must also be passed to use it"
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};
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early_dcx.early_fatal(format!("library kind `link-arg` is unstable{why}"))
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}
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NativeLibKind::LinkArg
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}
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_ => early_dcx.early_fatal(format!(
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"unknown library kind `{kind}`, expected one of: static, dylib, framework, link-arg"
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)),
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};
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match modifiers {
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None => (kind, None),
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Some(modifiers) => parse_native_lib_modifiers(early_dcx, kind, modifiers, matches),
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}
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}
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fn parse_native_lib_modifiers(
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early_dcx: &EarlyDiagCtxt,
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mut kind: NativeLibKind,
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modifiers: &str,
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matches: &getopts::Matches,
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) -> (NativeLibKind, Option<bool>) {
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let mut verbatim = None;
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for modifier in modifiers.split(',') {
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let (modifier, value) = match modifier.strip_prefix(['+', '-']) {
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Some(m) => (m, modifier.starts_with('+')),
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None => early_dcx.early_fatal(
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"invalid linking modifier syntax, expected '+' or '-' prefix \
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before one of: bundle, verbatim, whole-archive, as-needed",
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),
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};
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let report_unstable_modifier = || {
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if !nightly_options::is_unstable_enabled(matches) {
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let why = if nightly_options::match_is_nightly_build(matches) {
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" and only accepted on the nightly compiler"
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} else {
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", the `-Z unstable-options` flag must also be passed to use it"
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};
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early_dcx.early_fatal(format!("linking modifier `{modifier}` is unstable{why}"))
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}
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};
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let assign_modifier = |dst: &mut Option<bool>| {
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if dst.is_some() {
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let msg = format!("multiple `{modifier}` modifiers in a single `-l` option");
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early_dcx.early_fatal(msg)
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} else {
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*dst = Some(value);
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}
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};
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match (modifier, &mut kind) {
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("bundle", NativeLibKind::Static { bundle, .. }) => assign_modifier(bundle),
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("bundle", _) => early_dcx.early_fatal(
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"linking modifier `bundle` is only compatible with `static` linking kind",
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),
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("verbatim", _) => assign_modifier(&mut verbatim),
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("whole-archive", NativeLibKind::Static { whole_archive, .. }) => {
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assign_modifier(whole_archive)
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}
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("whole-archive", _) => early_dcx.early_fatal(
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"linking modifier `whole-archive` is only compatible with `static` linking kind",
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),
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("as-needed", NativeLibKind::Dylib { as_needed })
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| ("as-needed", NativeLibKind::Framework { as_needed }) => {
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report_unstable_modifier();
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assign_modifier(as_needed)
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}
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("as-needed", _) => early_dcx.early_fatal(
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"linking modifier `as-needed` is only compatible with \
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`dylib` and `framework` linking kinds",
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),
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// Note: this error also excludes the case with empty modifier
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// string, like `modifiers = ""`.
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_ => early_dcx.early_fatal(format!(
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"unknown linking modifier `{modifier}`, expected one \
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of: bundle, verbatim, whole-archive, as-needed"
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)),
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}
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}
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(kind, verbatim)
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}
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