From 698f8c2f01ea549d77d7dc3338a12e04c11057b9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Wed, 17 Apr 2024 14:02:58 +0200 Subject: Adding upstream version 1.64.0+dfsg1. Signed-off-by: Daniel Baumann --- vendor/clap/src/macros.rs | 1062 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 1062 insertions(+) create mode 100644 vendor/clap/src/macros.rs (limited to 'vendor/clap/src/macros.rs') diff --git a/vendor/clap/src/macros.rs b/vendor/clap/src/macros.rs new file mode 100644 index 000000000..0b671a37a --- /dev/null +++ b/vendor/clap/src/macros.rs @@ -0,0 +1,1062 @@ +/// Deprecated in [Issue #3087](https://github.com/clap-rs/clap/issues/3087), maybe [`clap::Parser`][crate::Parser] would fit your use case? +#[cfg(feature = "yaml")] +#[cfg_attr( + feature = "deprecated", + deprecated( + since = "3.0.0", + note = "Deprecated in Issue #3087, maybe clap::Parser would fit your use case?" + ) +)] +#[doc(hidden)] +#[macro_export] +macro_rules! load_yaml { + ($yaml:expr) => { + &$crate::YamlLoader::load_from_str(include_str!($yaml)).expect("failed to load YAML file") + [0] + }; +} + +/// Deprecated, replaced with [`ArgMatches::value_of_t`][crate::ArgMatches::value_of_t] +#[macro_export] +#[cfg_attr( + feature = "deprecated", + deprecated(since = "3.0.0", note = "Replaced with `ArgMatches::value_of_t`") +)] +#[doc(hidden)] +macro_rules! value_t { + ($m:ident, $v:expr, $t:ty) => { + $crate::value_t!($m.value_of($v), $t) + }; + ($m:ident.value_of($v:expr), $t:ty) => { + $m.value_of_t::<$t>($v) + }; +} + +/// Deprecated, replaced with [`ArgMatches::value_of_t_or_exit`][crate::ArgMatches::value_of_t_or_exit] +#[macro_export] +#[cfg_attr( + feature = "deprecated", + deprecated( + since = "3.0.0", + note = "Replaced with `ArgMatches::value_of_t_or_exit`" + ) +)] +#[doc(hidden)] +macro_rules! value_t_or_exit { + ($m:ident, $v:expr, $t:ty) => { + value_t_or_exit!($m.value_of($v), $t) + }; + ($m:ident.value_of($v:expr), $t:ty) => { + $m.value_of_t_or_exit::<$t>($v) + }; +} + +/// Deprecated, replaced with [`ArgMatches::values_of_t`][crate::ArgMatches::value_of_t] +#[macro_export] +#[cfg_attr( + feature = "deprecated", + deprecated(since = "3.0.0", note = "Replaced with `ArgMatches::values_of_t`") +)] +#[doc(hidden)] +macro_rules! values_t { + ($m:ident, $v:expr, $t:ty) => { + values_t!($m.values_of($v), $t) + }; + ($m:ident.values_of($v:expr), $t:ty) => { + $m.values_of_t::<$t>($v) + }; +} + +/// Deprecated, replaced with [`ArgMatches::values_of_t_or_exit`][crate::ArgMatches::value_of_t_or_exit] +#[macro_export] +#[cfg_attr( + feature = "deprecated", + deprecated( + since = "3.0.0", + note = "Replaced with `ArgMatches::values_of_t_or_exit`" + ) +)] +#[doc(hidden)] +macro_rules! values_t_or_exit { + ($m:ident, $v:expr, $t:ty) => { + values_t_or_exit!($m.values_of($v), $t) + }; + ($m:ident.values_of($v:expr), $t:ty) => { + $m.values_of_t_or_exit::<$t>($v) + }; +} + +#[cfg_attr( + feature = "deprecated", + deprecated(since = "3.0.0", note = "Replaced with `ArgEnum`") +)] +#[doc(hidden)] +#[macro_export] +macro_rules! _clap_count_exprs { + () => { 0 }; + ($e:expr) => { 1 }; + ($e:expr, $($es:expr),+) => { 1 + $crate::_clap_count_exprs!($($es),*) }; +} + +/// Deprecated, replaced with [`ArgEnum`][crate::ArgEnum] +#[cfg_attr( + feature = "deprecated", + deprecated(since = "3.0.0", note = "Replaced with `ArgEnum`") +)] +#[doc(hidden)] +#[macro_export] +macro_rules! arg_enum { + (@as_item $($i:item)*) => ($($i)*); + (@impls ( $($tts:tt)* ) -> ($e:ident, $($v:ident),+)) => { + $crate::arg_enum!(@as_item + $($tts)* + + impl ::std::str::FromStr for $e { + type Err = String; + + fn from_str(s: &str) -> ::std::result::Result { + #[allow(deprecated, unused_imports)] + use ::std::ascii::AsciiExt; + match s { + $(stringify!($v) | + _ if s.eq_ignore_ascii_case(stringify!($v)) => Ok($e::$v)),+, + _ => Err({ + let v = vec![ + $(stringify!($v),)+ + ]; + format!("valid values: {}", + v.join(", ")) + }), + } + } + } + impl ::std::fmt::Display for $e { + fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result { + match *self { + $($e::$v => write!(f, stringify!($v)),)+ + } + } + } + impl $e { + #[allow(dead_code)] + pub fn variants() -> [&'static str; $crate::_clap_count_exprs!($(stringify!($v)),+)] { + [ + $(stringify!($v),)+ + ] + } + }); + }; + ($(#[$($m:meta),+])+ pub enum $e:ident { $($v:ident $(=$val:expr)*,)+ } ) => { + $crate::arg_enum!(@impls + ($(#[$($m),+])+ + pub enum $e { + $($v$(=$val)*),+ + }) -> ($e, $($v),+) + ); + }; + ($(#[$($m:meta),+])+ pub enum $e:ident { $($v:ident $(=$val:expr)*),+ } ) => { + $crate::arg_enum!(@impls + ($(#[$($m),+])+ + pub enum $e { + $($v$(=$val)*),+ + }) -> ($e, $($v),+) + ); + }; + ($(#[$($m:meta),+])+ enum $e:ident { $($v:ident $(=$val:expr)*,)+ } ) => { + $crate::arg_enum!(@impls + ($(#[$($m),+])+ + enum $e { + $($v$(=$val)*),+ + }) -> ($e, $($v),+) + ); + }; + ($(#[$($m:meta),+])+ enum $e:ident { $($v:ident $(=$val:expr)*),+ } ) => { + $crate::arg_enum!(@impls + ($(#[$($m),+])+ + enum $e { + $($v$(=$val)*),+ + }) -> ($e, $($v),+) + ); + }; + (pub enum $e:ident { $($v:ident $(=$val:expr)*,)+ } ) => { + $crate::arg_enum!(@impls + (pub enum $e { + $($v$(=$val)*),+ + }) -> ($e, $($v),+) + ); + }; + (pub enum $e:ident { $($v:ident $(=$val:expr)*),+ } ) => { + $crate::arg_enum!(@impls + (pub enum $e { + $($v$(=$val)*),+ + }) -> ($e, $($v),+) + ); + }; + (enum $e:ident { $($v:ident $(=$val:expr)*,)+ } ) => { + $crate::arg_enum!(@impls + (enum $e { + $($v$(=$val)*),+ + }) -> ($e, $($v),+) + ); + }; + (enum $e:ident { $($v:ident $(=$val:expr)*),+ } ) => { + $crate::arg_enum!(@impls + (enum $e { + $($v$(=$val)*),+ + }) -> ($e, $($v),+) + ); + }; +} + +/// Allows you to pull the version from your Cargo.toml at compile time as +/// `MAJOR.MINOR.PATCH_PKGVERSION_PRE` +/// +/// # Examples +/// +/// ```no_run +/// # #[macro_use] +/// # extern crate clap; +/// # use clap::Command; +/// # fn main() { +/// let m = Command::new("cmd") +/// .version(crate_version!()) +/// .get_matches(); +/// # } +/// ``` +#[cfg(feature = "cargo")] +#[macro_export] +macro_rules! crate_version { + () => { + env!("CARGO_PKG_VERSION") + }; +} + +/// Allows you to pull the authors for the command from your Cargo.toml at +/// compile time in the form: +/// `"author1 lastname :author2 lastname "` +/// +/// You can replace the colons with a custom separator by supplying a +/// replacement string, so, for example, +/// `crate_authors!(",\n")` would become +/// `"author1 lastname ,\nauthor2 lastname ,\nauthor3 lastname "` +/// +/// # Examples +/// +/// ```no_run +/// # #[macro_use] +/// # extern crate clap; +/// # use clap::Command; +/// # fn main() { +/// let m = Command::new("cmd") +/// .author(crate_authors!("\n")) +/// .get_matches(); +/// # } +/// ``` +#[cfg(feature = "cargo")] +#[macro_export] +macro_rules! crate_authors { + ($sep:expr) => {{ + static CACHED: clap::once_cell::sync::Lazy = + clap::once_cell::sync::Lazy::new(|| env!("CARGO_PKG_AUTHORS").replace(':', $sep)); + + let s: &'static str = &*CACHED; + s + }}; + () => { + env!("CARGO_PKG_AUTHORS") + }; +} + +/// Allows you to pull the description from your Cargo.toml at compile time. +/// +/// # Examples +/// +/// ```no_run +/// # #[macro_use] +/// # extern crate clap; +/// # use clap::Command; +/// # fn main() { +/// let m = Command::new("cmd") +/// .about(crate_description!()) +/// .get_matches(); +/// # } +/// ``` +#[cfg(feature = "cargo")] +#[macro_export] +macro_rules! crate_description { + () => { + env!("CARGO_PKG_DESCRIPTION") + }; +} + +/// Allows you to pull the name from your Cargo.toml at compile time. +/// +/// # Examples +/// +/// ```no_run +/// # #[macro_use] +/// # extern crate clap; +/// # use clap::Command; +/// # fn main() { +/// let m = Command::new(crate_name!()) +/// .get_matches(); +/// # } +/// ``` +#[cfg(feature = "cargo")] +#[macro_export] +macro_rules! crate_name { + () => { + env!("CARGO_PKG_NAME") + }; +} + +/// Allows you to build the `Command` instance from your Cargo.toml at compile time. +/// +/// **NOTE:** Changing the values in your `Cargo.toml` does not trigger a re-build automatically, +/// and therefore won't change the generated output until you recompile. +/// +/// In some cases you can "trick" the compiler into triggering a rebuild when your +/// `Cargo.toml` is changed by including this in your `src/main.rs` file +/// `include_str!("../Cargo.toml");` +/// +/// # Examples +/// +/// ```no_run +/// # #[macro_use] +/// # extern crate clap; +/// # fn main() { +/// let m = command!().get_matches(); +/// # } +/// ``` +#[cfg(feature = "cargo")] +#[macro_export] +macro_rules! command { + () => {{ + $crate::command!($crate::crate_name!()) + }}; + ($name:expr) => {{ + let mut cmd = $crate::Command::new($name).version($crate::crate_version!()); + + let author = $crate::crate_authors!(); + if !author.is_empty() { + cmd = cmd.author(author) + } + + let about = $crate::crate_description!(); + if !about.is_empty() { + cmd = cmd.about(about) + } + + cmd + }}; +} + +/// Requires `cargo` feature flag to be enabled. +#[cfg(not(feature = "cargo"))] +#[macro_export] +macro_rules! command { + () => {{ + compile_error!("`cargo` feature flag is required"); + }}; + ($name:expr) => {{ + compile_error!("`cargo` feature flag is required"); + }}; +} + +/// Deprecated, replaced with [`clap::command!`][crate::command] +#[cfg(feature = "cargo")] +#[cfg_attr( + feature = "deprecated", + deprecated(since = "3.1.0", note = "Replaced with `clap::command!") +)] +#[macro_export] +macro_rules! app_from_crate { + () => {{ + let mut cmd = $crate::Command::new($crate::crate_name!()).version($crate::crate_version!()); + + let author = $crate::crate_authors!(", "); + if !author.is_empty() { + cmd = cmd.author(author) + } + + let about = $crate::crate_description!(); + if !about.is_empty() { + cmd = cmd.about(about) + } + + cmd + }}; + ($sep:expr) => {{ + let mut cmd = $crate::Command::new($crate::crate_name!()).version($crate::crate_version!()); + + let author = $crate::crate_authors!($sep); + if !author.is_empty() { + cmd = cmd.author(author) + } + + let about = $crate::crate_description!(); + if !about.is_empty() { + cmd = cmd.about(about) + } + + cmd + }}; +} + +#[doc(hidden)] +#[macro_export] +macro_rules! arg_impl { + ( @string $val:ident ) => { + stringify!($val) + }; + ( @string $val:literal ) => {{ + let ident_or_string_literal: &str = $val; + ident_or_string_literal + }}; + ( @string $val:tt ) => { + ::std::compile_error!("Only identifiers or string literals supported"); + }; + ( @string ) => { + None + }; + + ( @char $val:ident ) => {{ + let ident_or_char_literal = stringify!($val); + debug_assert_eq!( + ident_or_char_literal.len(), + 1, + "Single-letter identifier expected, got {}", + ident_or_char_literal + ); + ident_or_char_literal.chars().next().unwrap() + }}; + ( @char $val:literal ) => {{ + let ident_or_char_literal: char = $val; + ident_or_char_literal + }}; + ( @char ) => {{ + None + }}; + + ( + @arg + ($arg:expr) + --$long:ident + $($tail:tt)* + ) => { + $crate::arg_impl! { + @arg + ({ + debug_assert_eq!($arg.get_value_names(), None, "Flags should precede values"); + #[allow(deprecated)] + { + debug_assert!(!$arg.is_multiple_occurrences_set(), "Flags should precede `...`"); + } + + let mut arg = $arg; + let long = $crate::arg_impl! { @string $long }; + if arg.get_id().is_empty() { + arg = arg.id(long); + } + arg.long(long) + }) + $($tail)* + } + }; + ( + @arg + ($arg:expr) + --$long:literal + $($tail:tt)* + ) => { + $crate::arg_impl! { + @arg + ({ + debug_assert_eq!($arg.get_value_names(), None, "Flags should precede values"); + #[allow(deprecated)] + { + debug_assert!(!$arg.is_multiple_occurrences_set(), "Flags should precede `...`"); + } + + let mut arg = $arg; + let long = $crate::arg_impl! { @string $long }; + if arg.get_id().is_empty() { + arg = arg.id(long); + } + arg.long(long) + }) + $($tail)* + } + }; + ( + @arg + ($arg:expr) + -$short:ident + $($tail:tt)* + ) => { + $crate::arg_impl! { + @arg + ({ + debug_assert_eq!($arg.get_long(), None, "Short flags should precede long flags"); + debug_assert_eq!($arg.get_value_names(), None, "Flags should precede values"); + #[allow(deprecated)] + { + debug_assert!(!$arg.is_multiple_occurrences_set(), "Flags should precede `...`"); + } + + $arg.short($crate::arg_impl! { @char $short }) + }) + $($tail)* + } + }; + ( + @arg + ($arg:expr) + -$short:literal + $($tail:tt)* + ) => { + $crate::arg_impl! { + @arg + ({ + debug_assert_eq!($arg.get_long(), None, "Short flags should precede long flags"); + debug_assert_eq!($arg.get_value_names(), None, "Flags should precede values"); + #[allow(deprecated)] + { + debug_assert!(!$arg.is_multiple_occurrences_set(), "Flags should precede `...`"); + } + + $arg.short($crate::arg_impl! { @char $short }) + }) + $($tail)* + } + }; + ( + @arg + ($arg:expr) + <$value_name:ident> + $($tail:tt)* + ) => { + $crate::arg_impl! { + @arg + ({ + #[allow(deprecated)] + { + debug_assert!(!$arg.is_multiple_occurrences_set(), "Values should precede `...`"); + } + debug_assert_eq!($arg.get_value_names(), None, "Multiple values not yet supported"); + + let mut arg = $arg; + + arg = arg.required(true); + arg = arg.takes_value(true); + + let value_name = $crate::arg_impl! { @string $value_name }; + if arg.get_id().is_empty() { + arg = arg.id(value_name); + } + arg.value_name(value_name) + }) + $($tail)* + } + }; + ( + @arg + ($arg:expr) + <$value_name:literal> + $($tail:tt)* + ) => { + $crate::arg_impl! { + @arg + ({ + #[allow(deprecated)] + { + debug_assert!(!$arg.is_multiple_occurrences_set(), "Values should precede `...`"); + } + debug_assert_eq!($arg.get_value_names(), None, "Multiple values not yet supported"); + + let mut arg = $arg; + + arg = arg.required(true); + arg = arg.takes_value(true); + + let value_name = $crate::arg_impl! { @string $value_name }; + if arg.get_id().is_empty() { + arg = arg.id(value_name); + } + arg.value_name(value_name) + }) + $($tail)* + } + }; + ( + @arg + ($arg:expr) + [$value_name:ident] + $($tail:tt)* + ) => { + $crate::arg_impl! { + @arg + ({ + #[allow(deprecated)] + { + debug_assert!(!$arg.is_multiple_occurrences_set(), "Values should precede `...`"); + } + debug_assert_eq!($arg.get_value_names(), None, "Multiple values not yet supported"); + + let mut arg = $arg; + + if arg.get_long().is_none() && arg.get_short().is_none() { + arg = arg.required(false); + } else { + arg = arg.min_values(0).max_values(1); + } + arg = arg.takes_value(true); + + let value_name = $crate::arg_impl! { @string $value_name }; + if arg.get_id().is_empty() { + arg = arg.id(value_name); + } + arg.value_name(value_name) + }) + $($tail)* + } + }; + ( + @arg + ($arg:expr) + [$value_name:literal] + $($tail:tt)* + ) => { + $crate::arg_impl! { + @arg + ({ + #[allow(deprecated)] + { + debug_assert!(!$arg.is_multiple_occurrences_set(), "Values should precede `...`"); + } + debug_assert_eq!($arg.get_value_names(), None, "Multiple values not yet supported"); + + let mut arg = $arg; + + if arg.get_long().is_none() && arg.get_short().is_none() { + arg = arg.required(false); + } else { + arg = arg.min_values(0).max_values(1); + } + arg = arg.takes_value(true); + + let value_name = $crate::arg_impl! { @string $value_name }; + if arg.get_id().is_empty() { + arg = arg.id(value_name); + } + arg.value_name(value_name) + }) + $($tail)* + } + }; + ( + @arg + ($arg:expr) + ... + $($tail:tt)* + ) => { + $crate::arg_impl! { + @arg + ({#[allow(deprecated)]{ + $arg.multiple_occurrences(true) + }}) + $($tail)* + } + }; + ( + @arg + ($arg:expr) + $help:literal + ) => { + $arg.help($help) + }; + ( + @arg + ($arg:expr) + ) => { + $arg + }; +} + +/// Create an [`Arg`] from a usage string. +/// +/// Allows creation of basic settings for the [`Arg`]. +/// +/// **NOTE**: Not all settings may be set using the usage string method. Some properties are +/// only available via the builder pattern. +/// +/// # Syntax +/// +/// Usage strings typically following the form: +/// +/// ```notrust +/// [explicit name] [short] [long] [value names] [...] [help string] +/// ``` +/// +/// ### Explicit Name +/// +/// The name may be either a bare-word or a string, followed by a `:`, like `name:` or +/// `"name":`. +/// +/// *Note:* This is an optional field, if it's omitted the argument will use one of the additional +/// fields as the name using the following priority order: +/// +/// 1. Explicit Name +/// 2. Long +/// 3. Value Name +/// +/// See [`Arg::name`][crate::Arg::name]. +/// +/// ### Short +/// +/// A short flag is a `-` followed by either a bare-character or quoted character, like `-f` or +/// `-'f'`. +/// +/// See [`Arg::short`][crate::Arg::short]. +/// +/// ### Long +/// +/// A long flag is a `--` followed by either a bare-word or a string, like `--foo` or +/// `--"foo"`. +/// +/// See [`Arg::long`][crate::Arg::long]. +/// +/// ### Values (Value Notation) +/// +/// This is set by placing bare-word between: +/// - `[]` like `[FOO]` +/// - Positional argument: optional +/// - Named argument: optional value +/// - `<>` like ``: required +/// +/// See [`Arg::value_name`][crate::Arg::value_name]. +/// +/// ### `...` +/// +/// `...` (three consecutive dots/periods) specifies that this argument may occur multiple +/// times (not to be confused with multiple values per occurrence). +/// +/// See [`Arg::multiple_occurrences`][crate::Arg::multiple_occurrences]. +/// +/// ### Help String +/// +/// The help string is denoted between a pair of double quotes `""` and may contain any +/// characters. +/// +/// # Examples +/// +/// ```rust +/// # use clap::{Command, Arg, arg}; +/// Command::new("prog") +/// .args(&[ +/// arg!(--config "a required file for the configuration and no short"), +/// arg!(-d --debug ... "turns on debugging information and allows multiples"), +/// arg!([input] "an optional input file to use") +/// ]) +/// # ; +/// ``` +/// [`Arg`]: ./struct.Arg.html +#[macro_export] +macro_rules! arg { + ( $name:ident: $($tail:tt)+ ) => { + $crate::arg_impl! { + @arg ($crate::Arg::new($crate::arg_impl! { @string $name })) $($tail)+ + } + }; + ( $($tail:tt)+ ) => {{ + let arg = $crate::arg_impl! { + @arg ($crate::Arg::default()) $($tail)+ + }; + debug_assert!(!arg.get_id().is_empty(), "Without a value or long flag, the `name:` prefix is required"); + arg + }}; +} + +/// Deprecated, replaced with [`clap::Parser`][crate::Parser] and [`clap::arg!`][crate::arg] (Issue clap-rs/clap#2835) +#[cfg_attr( + feature = "deprecated", + deprecated( + since = "3.0.0", + note = "Replaced with `clap::Parser` for a declarative API (Issue clap-rs/clap#2835)" + ) +)] +#[doc(hidden)] +#[macro_export] +macro_rules! clap_app { + (@app ($builder:expr)) => { $builder }; + (@app ($builder:expr) (@arg ($name:expr): $($tail:tt)*) $($tt:tt)*) => { + $crate::clap_app!{ @app + ($builder.arg( + $crate::clap_app!{ @arg ($crate::Arg::new($name)) (-) $($tail)* })) + $($tt)* + } + }; + (@app ($builder:expr) (@arg $name:ident: $($tail:tt)*) $($tt:tt)*) => { + $crate::clap_app!{ @app + ($builder.arg( + $crate::clap_app!{ @arg ($crate::Arg::new(stringify!($name))) (-) $($tail)* })) + $($tt)* + } + }; + (@app ($builder:expr) (@setting $setting:ident) $($tt:tt)*) => { + $crate::clap_app!{ @app + ($builder.setting($crate::AppSettings::$setting)) + $($tt)* + } + }; +// Treat the application builder as an argument to set its attributes + (@app ($builder:expr) (@attributes $($attr:tt)*) $($tt:tt)*) => { + $crate::clap_app!{ @app ($crate::clap_app!{ @arg ($builder) $($attr)* }) $($tt)* } + }; + (@app ($builder:expr) (@group $name:ident => $($tail:tt)*) $($tt:tt)*) => { + $crate::clap_app!{ @app + ($crate::clap_app!{ @group ($builder, $crate::ArgGroup::new(stringify!($name))) $($tail)* }) + $($tt)* + } + }; + (@app ($builder:expr) (@group $name:ident !$ident:ident => $($tail:tt)*) $($tt:tt)*) => { + $crate::clap_app!{ @app + ($crate::clap_app!{ @group ($builder, $crate::ArgGroup::new(stringify!($name)).$ident(false)) $($tail)* }) + $($tt)* + } + }; + (@app ($builder:expr) (@group $name:ident +$ident:ident => $($tail:tt)*) $($tt:tt)*) => { + $crate::clap_app!{ @app + ($crate::clap_app!{ @group ($builder, $crate::ArgGroup::new(stringify!($name)).$ident(true)) $($tail)* }) + $($tt)* + } + }; +// Handle subcommand creation + (@app ($builder:expr) (@subcommand $name:ident => $($tail:tt)*) $($tt:tt)*) => { + $crate::clap_app!{ @app + ($builder.subcommand( + $crate::clap_app!{ @app ($crate::Command::new(stringify!($name))) $($tail)* } + )) + $($tt)* + } + }; +// Yaml like function calls - used for setting various meta directly against the app + (@app ($builder:expr) ($ident:ident: $($v:expr),*) $($tt:tt)*) => { +// $crate::clap_app!{ @app ($builder.$ident($($v),*)) $($tt)* } + $crate::clap_app!{ @app + ($builder.$ident($($v),*)) + $($tt)* + } + }; + +// Add members to group and continue argument handling with the parent builder + (@group ($builder:expr, $group:expr)) => { $builder.group($group) }; + // Treat the group builder as an argument to set its attributes + (@group ($builder:expr, $group:expr) (@attributes $($attr:tt)*) $($tt:tt)*) => { + $crate::clap_app!{ @group ($builder, $crate::clap_app!{ @arg ($group) (-) $($attr)* }) $($tt)* } + }; + (@group ($builder:expr, $group:expr) (@arg $name:ident: $($tail:tt)*) $($tt:tt)*) => { + $crate::clap_app!{ @group + ($crate::clap_app!{ @app ($builder) (@arg $name: $($tail)*) }, + $group.arg(stringify!($name))) + $($tt)* + } + }; + +// No more tokens to munch + (@arg ($arg:expr) $modes:tt) => { $arg }; +// Shorthand tokens influenced by the usage_string + (@arg ($arg:expr) $modes:tt --($long:expr) $($tail:tt)*) => { + $crate::clap_app!{ @arg ($arg.long($long)) $modes $($tail)* } + }; + (@arg ($arg:expr) $modes:tt --$long:ident $($tail:tt)*) => { + $crate::clap_app!{ @arg ($arg.long(stringify!($long))) $modes $($tail)* } + }; + (@arg ($arg:expr) $modes:tt -$short:ident $($tail:tt)*) => { + $crate::clap_app!{ @arg ($arg.short(stringify!($short).chars().next().unwrap())) $modes $($tail)* } + }; + (@arg ($arg:expr) (-) <$var:ident> $($tail:tt)*) => { + $crate::clap_app!{ @arg ($arg.value_name(stringify!($var))) (+) +takes_value +required $($tail)* } + }; + (@arg ($arg:expr) (+) <$var:ident> $($tail:tt)*) => { + $crate::clap_app!{ @arg ($arg.value_name(stringify!($var))) (+) $($tail)* } + }; + (@arg ($arg:expr) (-) [$var:ident] $($tail:tt)*) => { + $crate::clap_app!{ @arg ($arg.value_name(stringify!($var))) (+) +takes_value $($tail)* } + }; + (@arg ($arg:expr) (+) [$var:ident] $($tail:tt)*) => { + $crate::clap_app!{ @arg ($arg.value_name(stringify!($var))) (+) $($tail)* } + }; + (@arg ($arg:expr) $modes:tt ... $($tail:tt)*) => { + $crate::clap_app!{ @arg ($arg) $modes +multiple +takes_value $($tail)* } + }; +// Shorthand magic + (@arg ($arg:expr) $modes:tt #{$n:expr, $m:expr} $($tail:tt)*) => { + $crate::clap_app!{ @arg ($arg) $modes min_values($n) max_values($m) $($tail)* } + }; + (@arg ($arg:expr) $modes:tt * $($tail:tt)*) => { + $crate::clap_app!{ @arg ($arg) $modes +required $($tail)* } + }; +// !foo -> .foo(false) + (@arg ($arg:expr) $modes:tt !$ident:ident $($tail:tt)*) => { + $crate::clap_app!{ @arg ($arg.$ident(false)) $modes $($tail)* } + }; +// +foo -> .foo(true) + (@arg ($arg:expr) $modes:tt +$ident:ident $($tail:tt)*) => { + $crate::clap_app!{ @arg ($arg.$ident(true)) $modes $($tail)* } + }; +// Validator + (@arg ($arg:expr) $modes:tt {$fn_:expr} $($tail:tt)*) => { + $crate::clap_app!{ @arg ($arg.validator($fn_)) $modes $($tail)* } + }; + (@as_expr $expr:expr) => { $expr }; +// Help + (@arg ($arg:expr) $modes:tt $desc:tt) => { $arg.help($crate::clap_app!{ @as_expr $desc }) }; +// Handle functions that need to be called multiple times for each argument + (@arg ($arg:expr) $modes:tt $ident:ident[$($target:ident)*] $($tail:tt)*) => { + $crate::clap_app!{ @arg ($arg $( .$ident(stringify!($target)) )*) $modes $($tail)* } + }; +// Inherit builder's functions, e.g. `index(2)`, `requires_if("val", "arg")` + (@arg ($arg:expr) $modes:tt $ident:ident($($expr:expr),*) $($tail:tt)*) => { + $crate::clap_app!{ @arg ($arg.$ident($($expr),*)) $modes $($tail)* } + }; +// Inherit builder's functions with trailing comma, e.g. `index(2,)`, `requires_if("val", "arg",)` + (@arg ($arg:expr) $modes:tt $ident:ident($($expr:expr,)*) $($tail:tt)*) => { + $crate::clap_app!{ @arg ($arg.$ident($($expr),*)) $modes $($tail)* } + }; + +// Build a subcommand outside of an app. + (@subcommand $name:ident => $($tail:tt)*) => { + $crate::clap_app!{ @app ($crate::Command::new(stringify!($name))) $($tail)* } + }; +// Start the magic + (($name:expr) => $($tail:tt)*) => {{ + $crate::clap_app!{ @app ($crate::Command::new($name)) $($tail)*} + }}; + + ($name:ident => $($tail:tt)*) => {{ + $crate::clap_app!{ @app ($crate::Command::new(stringify!($name))) $($tail)*} + }}; +} + +macro_rules! impl_settings { + ($settings:ident, $flags:ident, + $( + $(#[$inner:ident $($args:tt)*])* + $setting:ident => $flag:path + ),+ + ) => { + impl $flags { + #[allow(dead_code)] + pub(crate) fn empty() -> Self { + $flags(Flags::empty()) + } + + #[allow(dead_code)] + pub(crate) fn insert(&mut self, rhs: Self) { + self.0.insert(rhs.0); + } + + #[allow(dead_code)] + pub(crate) fn remove(&mut self, rhs: Self) { + self.0.remove(rhs.0); + } + + #[allow(dead_code)] + pub(crate) fn set(&mut self, s: $settings) { + #[allow(deprecated)] // some Settings might be deprecated + match s { + $( + $(#[$inner $($args)*])* + $settings::$setting => self.0.insert($flag), + )* + } + } + + #[allow(dead_code)] + pub(crate) fn unset(&mut self, s: $settings) { + #[allow(deprecated)] // some Settings might be deprecated + match s { + $( + $(#[$inner $($args)*])* + $settings::$setting => self.0.remove($flag), + )* + } + } + + #[allow(dead_code)] + pub(crate) fn is_set(&self, s: $settings) -> bool { + #[allow(deprecated)] // some Settings might be deprecated + match s { + $( + $(#[$inner $($args)*])* + $settings::$setting => self.0.contains($flag), + )* + } + } + } + + impl BitOr for $flags { + type Output = Self; + + fn bitor(mut self, rhs: Self) -> Self::Output { + self.0.insert(rhs.0); + self + } + } + + impl From<$settings> for $flags { + fn from(setting: $settings) -> Self { + let mut flags = $flags::empty(); + flags.set(setting); + flags + } + } + + impl BitOr<$settings> for $flags { + type Output = Self; + + fn bitor(mut self, rhs: $settings) -> Self::Output { + self.set(rhs); + self + } + } + + impl BitOr for $settings { + type Output = $flags; + + fn bitor(self, rhs: Self) -> Self::Output { + let mut flags = $flags::empty(); + flags.set(self); + flags.set(rhs); + flags + } + } + } +} + +// Convenience for writing to stderr thanks to https://github.com/BurntSushi +macro_rules! wlnerr { + ($($arg:tt)*) => ({ + use std::io::{Write, stderr}; + writeln!(&mut stderr(), $($arg)*).ok(); + }) +} + +#[cfg(feature = "debug")] +macro_rules! debug { + ($($arg:tt)*) => ({ + let prefix = format!("[{:>w$}] \t", module_path!(), w = 28); + let body = format!($($arg)*); + let mut color = $crate::output::fmt::Colorizer::new($crate::output::fmt::Stream::Stderr, $crate::ColorChoice::Auto); + color.hint(prefix); + color.hint(body); + color.none("\n"); + let _ = color.print(); + }) +} + +#[cfg(not(feature = "debug"))] +macro_rules! debug { + ($($arg:tt)*) => {}; +} -- cgit v1.2.3