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authorDaniel Mueller <deso@posteo.net>2020-04-04 15:32:14 -0700
committerDaniel Mueller <deso@posteo.net>2020-04-04 15:32:14 -0700
commit681cc8882f7995407c33eb48730daaa901074460 (patch)
treec865f6c4a34e11af685889a09d95f3225e54a16c /nitrocli/src/arg_util.rs
parentd0d9683df8398696147e7ee1fcffb2e4e957008c (diff)
downloadnitrocli-681cc8882f7995407c33eb48730daaa901074460.tar.gz
nitrocli-681cc8882f7995407c33eb48730daaa901074460.tar.bz2
Move nitrocli source code into repository root
Now that all vendored dependencies have been removed, this change moves the program's source code from the nitrocli/ directory into the root of the repository.
Diffstat (limited to 'nitrocli/src/arg_util.rs')
-rw-r--r--nitrocli/src/arg_util.rs158
1 files changed, 0 insertions, 158 deletions
diff --git a/nitrocli/src/arg_util.rs b/nitrocli/src/arg_util.rs
deleted file mode 100644
index e2e7b1d..0000000
--- a/nitrocli/src/arg_util.rs
+++ /dev/null
@@ -1,158 +0,0 @@
-// arg_util.rs
-
-// *************************************************************************
-// * Copyright (C) 2019 Daniel Mueller (deso@posteo.net) *
-// * *
-// * This program is free software: you can redistribute it and/or modify *
-// * it under the terms of the GNU General Public License as published by *
-// * the Free Software Foundation, either version 3 of the License, or *
-// * (at your option) any later version. *
-// * *
-// * This program is distributed in the hope that it will be useful, *
-// * but WITHOUT ANY WARRANTY; without even the implied warranty of *
-// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
-// * GNU General Public License for more details. *
-// * *
-// * You should have received a copy of the GNU General Public License *
-// * along with this program. If not, see <http://www.gnu.org/licenses/>. *
-// *************************************************************************
-
-macro_rules! count {
- ($head:ident) => { 1 };
- ($head:ident, $($tail:ident),*) => {
- 1 + count!($($tail),*)
- }
-}
-
-/// A macro for generating an enum with a set of simple (i.e., no
-/// parameters) variants and their textual representations.
-// TODO: Right now we hard code the derives we create. We may want to
-// make this set configurable.
-macro_rules! Enum {
- ( $name:ident, [ $( $var:ident => ($str:expr, $exec:expr), ) *] ) => {
- Enum! {$name, [
- $( $var => $str, )*
- ]}
-
- #[allow(unused_qualifications)]
- impl $name {
- fn execute(
- self,
- ctx: &mut crate::args::ExecCtx<'_>,
- args: ::std::vec::Vec<::std::string::String>,
- ) -> crate::Result<()> {
- match self {
- $(
- $name::$var => $exec(ctx, args),
- )*
- }
- }
- }
- };
- ( $name:ident, [ $( $var:ident => $str:expr, ) *] ) => {
- #[derive(Clone, Copy, Debug, PartialEq)]
- pub enum $name {
- $(
- $var,
- )*
- }
-
- impl $name {
- #[allow(unused)]
- pub fn all(&self) -> [$name; count!($($var),*) ] {
- $name::all_variants()
- }
-
- pub fn all_variants() -> [$name; count!($($var),*) ] {
- [
- $(
- $name::$var,
- )*
- ]
- }
- }
-
- impl ::std::convert::AsRef<str> for $name {
- fn as_ref(&self) -> &'static str {
- match *self {
- $(
- $name::$var => $str,
- )*
- }
- }
- }
-
- impl ::std::fmt::Display for $name {
- fn fmt(&self, f: &mut ::std::fmt::Formatter<'_>) -> ::std::fmt::Result {
- write!(f, "{}", self.as_ref())
- }
- }
-
- impl ::std::str::FromStr for $name {
- type Err = ();
-
- fn from_str(s: &str) -> ::std::result::Result<Self, Self::Err> {
- match s {
- $(
- $str => Ok($name::$var),
- )*
- _ => Err(()),
- }
- }
- }
- };
-}
-
-/// A macro for formatting the variants of an enum (as created by the
-/// Enum!{} macro) ready to be used in a help text. The supplied `fmt`
-/// needs to contain the named parameter `{variants}`, which will be
-/// replaced with a generated version of the enum's variants.
-macro_rules! fmt_enum {
- ( $enm:ident ) => {{
- fmt_enum!($enm.all())
- }};
- ( $all:expr ) => {{
- $all
- .iter()
- .map(::std::convert::AsRef::as_ref)
- .collect::<::std::vec::Vec<_>>()
- .join("|")
- }};
-}
-
-/// A macro for generating the help text for a command/subcommand. The
-/// argument is the variable representing the command (which in turn is
-/// an enum).
-/// Note that the name of this variable is embedded into the help text!
-macro_rules! cmd_help {
- ( $cmd:ident ) => {
- format!(
- concat!("The ", stringify!($cmd), " to execute ({})"),
- fmt_enum!($cmd)
- )
- };
-}
-
-#[cfg(test)]
-mod tests {
- Enum! {Command, [
- Var1 => "var1",
- Var2 => "2",
- Var3 => "crazy",
- ]}
-
- #[test]
- fn all_variants() {
- assert_eq!(
- Command::all_variants(),
- [Command::Var1, Command::Var2, Command::Var3]
- )
- }
-
- #[test]
- fn text_representations() {
- assert_eq!(Command::Var1.as_ref(), "var1");
- assert_eq!(Command::Var2.as_ref(), "2");
- assert_eq!(Command::Var3.as_ref(), "crazy");
- }
-}