diff options
Diffstat (limited to 'third_party/rust/clap/src/build/macros.rs')
| -rw-r--r-- | third_party/rust/clap/src/build/macros.rs | 180 |
1 files changed, 180 insertions, 0 deletions
diff --git a/third_party/rust/clap/src/build/macros.rs b/third_party/rust/clap/src/build/macros.rs new file mode 100644 index 0000000000..5be4d205e0 --- /dev/null +++ b/third_party/rust/clap/src/build/macros.rs @@ -0,0 +1,180 @@ +#[cfg(feature = "yaml")] +macro_rules! yaml_tuple2 { + ($a:ident, $v:ident, $c:ident) => {{ + if let Some(vec) = $v.as_vec() { + for ys in vec { + if let Some(tup) = ys.as_vec() { + debug_assert_eq!(2, tup.len()); + $a = $a.$c(yaml_str!(tup[0]), yaml_str!(tup[1])); + } else { + panic!("Failed to convert YAML value to vec"); + } + } + } else { + panic!("Failed to convert YAML value to vec"); + } + $a + }}; +} + +#[cfg(feature = "yaml")] +macro_rules! yaml_tuple3 { + ($a:ident, $v:ident, $c:ident) => {{ + if let Some(vec) = $v.as_vec() { + for ys in vec { + if let Some(tup) = ys.as_vec() { + debug_assert_eq!(3, tup.len()); + $a = $a.$c( + yaml_str!(tup[0]), + yaml_opt_str!(tup[1]), + yaml_opt_str!(tup[2]), + ); + } else { + panic!("Failed to convert YAML value to vec"); + } + } + } else { + panic!("Failed to convert YAML value to vec"); + } + $a + }}; +} + +#[cfg(feature = "yaml")] +macro_rules! yaml_vec_or_str { + ($a:ident, $v:ident, $c:ident) => {{ + let maybe_vec = $v.as_vec(); + if let Some(vec) = maybe_vec { + for ys in vec { + if let Some(s) = ys.as_str() { + $a = $a.$c(s); + } else { + panic!("Failed to convert YAML value {:?} to a string", ys); + } + } + } else { + if let Some(s) = $v.as_str() { + $a = $a.$c(s); + } else { + panic!( + "Failed to convert YAML value {:?} to either a vec or string", + $v + ); + } + } + $a + }}; +} + +#[cfg(feature = "yaml")] +macro_rules! yaml_vec { + ($a:ident, $v:ident, $c:ident) => {{ + let maybe_vec = $v.as_vec(); + if let Some(vec) = maybe_vec { + let content = vec.into_iter().map(|ys| { + if let Some(s) = ys.as_str() { + s + } else { + panic!("Failed to convert YAML value {:?} to a string", ys); + } + }); + $a = $a.$c(content) + } else { + panic!("Failed to convert YAML value {:?} to a vec", $v); + } + $a + }}; +} + +#[cfg(feature = "yaml")] +macro_rules! yaml_opt_str { + ($v:expr) => {{ + if !$v.is_null() { + Some( + $v.as_str() + .unwrap_or_else(|| panic!("failed to convert YAML {:?} value to a string", $v)), + ) + } else { + None + } + }}; +} + +#[cfg(feature = "yaml")] +macro_rules! yaml_char { + ($v:expr) => {{ + $v.as_str() + .unwrap_or_else(|| panic!("failed to convert YAML {:?} value to a string", $v)) + .chars() + .next() + .unwrap_or_else(|| panic!("Expected char")) + }}; +} + +#[cfg(feature = "yaml")] +macro_rules! yaml_str { + ($v:expr) => {{ + $v.as_str() + .unwrap_or_else(|| panic!("failed to convert YAML {:?} value to a string", $v)) + }}; +} + +#[cfg(feature = "yaml")] +macro_rules! yaml_to_char { + ($a:ident, $v:ident, $c:ident) => {{ + $a.$c(yaml_char!($v)) + }}; +} + +#[cfg(feature = "yaml")] +macro_rules! yaml_to_str { + ($a:ident, $v:ident, $c:ident) => {{ + $a.$c(yaml_str!($v)) + }}; +} + +#[cfg(feature = "yaml")] +macro_rules! yaml_to_bool { + ($a:ident, $v:ident, $c:ident) => {{ + $a.$c($v + .as_bool() + .unwrap_or_else(|| panic!("failed to convert YAML {:?} value to a string", $v))) + }}; +} + +#[cfg(feature = "yaml")] +macro_rules! yaml_to_usize { + ($a:ident, $v:ident, $c:ident) => {{ + $a.$c($v + .as_i64() + .unwrap_or_else(|| panic!("failed to convert YAML {:?} value to a string", $v)) + as usize) + }}; +} + +#[cfg(feature = "yaml")] +macro_rules! yaml_to_setting { + ($a:ident, $v:ident, $c:ident, $s:ident, $t:literal, $n:expr) => {{ + if let Some(v) = $v.as_vec() { + for ys in v { + if let Some(s) = ys.as_str() { + $a = $a.$c(s.parse::<$s>().unwrap_or_else(|_| { + panic!("Unknown {} '{}' found in YAML file for {}", $t, s, $n) + })); + } else { + panic!( + "Failed to convert YAML {:?} value to an array of strings", + $v + ); + } + } + } else if let Some(v) = $v.as_str() { + $a = $a.$c(v + .parse::<$s>() + .unwrap_or_else(|_| panic!("Unknown {} '{}' found in YAML file for {}", $t, v, $n))) + } else { + panic!("Failed to convert YAML {:?} value to a string", $v); + } + $a + }}; +} |