Chih-Hung Hsieh | 92ff605 | 2020-06-10 20:18:39 -0700 | [diff] [blame] | 1 | use crate::rust; |
| 2 | use crate::rust_name::RustIdent; |
| 3 | use crate::strx; |
| 4 | |
| 5 | // Copy-pasted from libsyntax. |
| 6 | fn ident_start(c: char) -> bool { |
| 7 | (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || c == '_' |
| 8 | } |
| 9 | |
| 10 | // Copy-pasted from libsyntax. |
| 11 | fn ident_continue(c: char) -> bool { |
| 12 | (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z') || (c >= '0' && c <= '9') || c == '_' |
| 13 | } |
| 14 | |
| 15 | pub(crate) fn proto_path_to_rust_mod(path: &str) -> RustIdent { |
Haibo Huang | ba676d3 | 2020-08-12 13:52:13 -0700 | [diff] [blame^] | 16 | let without_dir = strx::remove_to(path, std::path::is_separator); |
Chih-Hung Hsieh | 92ff605 | 2020-06-10 20:18:39 -0700 | [diff] [blame] | 17 | let without_suffix = strx::remove_suffix(without_dir, ".proto"); |
| 18 | |
| 19 | let name = without_suffix |
| 20 | .chars() |
| 21 | .enumerate() |
| 22 | .map(|(i, c)| { |
| 23 | let valid = if i == 0 { |
| 24 | ident_start(c) |
| 25 | } else { |
| 26 | ident_continue(c) |
| 27 | }; |
| 28 | if valid { |
| 29 | c |
| 30 | } else { |
| 31 | '_' |
| 32 | } |
| 33 | }) |
| 34 | .collect::<String>(); |
| 35 | |
| 36 | let name = if rust::is_rust_keyword(&name) { |
| 37 | format!("{}_pb", name) |
| 38 | } else { |
| 39 | name |
| 40 | }; |
| 41 | RustIdent::from(name) |
| 42 | } |
| 43 | |
| 44 | #[cfg(test)] |
| 45 | mod test { |
| 46 | |
| 47 | use super::proto_path_to_rust_mod; |
| 48 | use crate::rust_name::RustIdent; |
| 49 | |
| 50 | #[test] |
| 51 | fn test_mod_path_proto_ext() { |
| 52 | assert_eq!( |
| 53 | RustIdent::from("proto"), |
| 54 | proto_path_to_rust_mod("proto.proto") |
| 55 | ); |
| 56 | } |
| 57 | |
| 58 | #[test] |
| 59 | fn test_mod_path_unknown_ext() { |
| 60 | assert_eq!( |
| 61 | RustIdent::from("proto_proto3"), |
| 62 | proto_path_to_rust_mod("proto.proto3") |
| 63 | ); |
| 64 | } |
| 65 | |
| 66 | #[test] |
| 67 | fn test_mod_path_empty_ext() { |
| 68 | assert_eq!(RustIdent::from("proto"), proto_path_to_rust_mod("proto")); |
| 69 | } |
Haibo Huang | ba676d3 | 2020-08-12 13:52:13 -0700 | [diff] [blame^] | 70 | |
| 71 | #[test] |
| 72 | fn test_mod_path_dir() { |
| 73 | assert_eq!( |
| 74 | RustIdent::from("baz"), |
| 75 | proto_path_to_rust_mod("foo/bar/baz.proto"), |
| 76 | ) |
| 77 | } |
| 78 | |
| 79 | #[cfg(target_os = "windows")] |
| 80 | #[test] |
| 81 | fn test_mod_path_dir_backslashes() { |
| 82 | assert_eq!( |
| 83 | RustIdent::from("baz"), |
| 84 | proto_path_to_rust_mod("foo\\bar\\baz.proto"), |
| 85 | ) |
| 86 | } |
Chih-Hung Hsieh | 92ff605 | 2020-06-10 20:18:39 -0700 | [diff] [blame] | 87 | } |