diff --git a/Cargo.lock b/Cargo.lock index 0a3137d9..a3e93bd7 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -2,24 +2,30 @@ # It is not intended for manual editing. [[package]] name = "aho-corasick" -version = "0.7.14" +version = "0.7.15" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "b476ce7103678b0c6d3d395dbbae31d48ff910bd28be979ba5d48c6351131d0d" +checksum = "7404febffaa47dac81aa44dba71523c9d069b1bdc50a77db41195149e17f68e5" dependencies = [ "memchr", ] [[package]] name = "anyhow" -version = "1.0.33" +version = "1.0.34" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "a1fd36ffbb1fb7c834eac128ea8d0e310c5aeb635548f9d58861e1308d46e71c" +checksum = "bf8dcb5b4bbaa28653b647d8c77bd4ed40183b48882e130c1f1ffb73de069fd7" [[package]] -name = "arc-swap" -version = "0.4.7" +name = "arrayref" +version = "0.3.6" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "4d25d88fd6b8041580a654f9d0c581a047baee2b3efee13275f2fc392fc75034" +checksum = "a4c527152e37cf757a3f78aae5a06fbeefdb07ccc535c980a3208ee3060dd544" + +[[package]] +name = "arrayvec" +version = "0.5.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "23b62fc65de8e4e7f52534fb52b0f3ed04746ae267519eef2a83941e8085068b" [[package]] name = "async-channel" @@ -34,9 +40,9 @@ dependencies = [ [[package]] name = "async-executor" -version = "1.3.0" +version = "1.4.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "d373d78ded7d0b3fa8039375718cde0aace493f2e34fb60f51cbf567562ca801" +checksum = "eb877970c7b440ead138f6321a3b5395d6061183af779340b65e20c0fede9146" dependencies = [ "async-task", "concurrent-queue", @@ -59,9 +65,9 @@ dependencies = [ [[package]] name = "async-io" -version = "1.1.10" +version = "1.3.1" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "d54bc4c1c7292475efb2253227dbcfad8fe1ca4c02bc62c510cc2f3da5c4704e" +checksum = "9315f8f07556761c3e48fec2e6b276004acf426e6dc068b2c2251854d65ee0fd" dependencies = [ "concurrent-queue", "fastrand", @@ -88,9 +94,9 @@ dependencies = [ [[package]] name = "async-net" -version = "1.4.7" +version = "1.5.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "ee4c3668eb091d781e97f0026b5289b457c77d407a85749a9bb4c057456c428f" +checksum = "06de475c85affe184648202401d7622afb32f0f74e02192857d0201a16defbe5" dependencies = [ "async-io", "blocking", @@ -106,7 +112,7 @@ checksum = "4c8cea09c1fb10a317d1b5af8024eeba256d6554763e85ecd90ff8df31c7bbda" dependencies = [ "async-io", "blocking", - "cfg-if", + "cfg-if 0.1.10", "event-listener", "futures-lite", "once_cell", @@ -116,9 +122,9 @@ dependencies = [ [[package]] name = "async-task" -version = "4.0.2" +version = "4.0.3" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "8ab27c1aa62945039e44edaeee1dc23c74cc0c303dd5fe0fb462a184f1c3a518" +checksum = "e91831deabf0d6d7ec49552e489aed63b7456a7a3c46cff62adad428110b0af0" [[package]] name = "atomic-waker" @@ -132,12 +138,35 @@ version = "1.0.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "cdb031dd78e28731d87d56cc8ffef4a8f36ca26c38fe2de700543e627f8a464a" +[[package]] +name = "base64" +version = "0.12.3" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "3441f0f7b02788e948e47f457ca01f1d7e6d92c693bc132c22b087d3141c03ff" + +[[package]] +name = "base64" +version = "0.13.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "904dfeac50f3cdaba28fc6f57fdcddb75f49ed61346676a78c4ffe55877802fd" + [[package]] name = "bitflags" version = "1.2.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "cf1de2fe8c75bc145a2f577add951f8134889b4795d47466a54a5c846d691693" +[[package]] +name = "blake2b_simd" +version = "0.5.11" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "afa748e348ad3be8263be728124b24a24f268266f6f5d58af9d75f6a40b5c587" +dependencies = [ + "arrayref", + "arrayvec", + "constant_time_eq", +] + [[package]] name = "blocking" version = "1.0.2" @@ -166,9 +195,9 @@ checksum = "df8670b8c7b9dae1793364eafadf7239c40d669904660c5960d74cfd80b46a53" [[package]] name = "cc" -version = "1.0.61" +version = "1.0.65" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "ed67cbde08356238e75fc4656be4749481eeffb09e19f320a25237d5221c985d" +checksum = "95752358c8f7552394baf48cd82695b345628ad3f170d607de3ca03b8dacca15" dependencies = [ "jobserver", ] @@ -179,6 +208,25 @@ version = "0.1.10" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "4785bdd1c96b2a846b2bd7cc02e86b6b3dbf14e7e53446c4f54c92a361040822" +[[package]] +name = "cfg-if" +version = "1.0.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd" + +[[package]] +name = "chrono" +version = "0.4.19" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "670ad68c9088c2a963aaa298cb369688cf3f9465ce5e2d4ca10e6e0098a1ce73" +dependencies = [ + "libc", + "num-integer", + "num-traits", + "time", + "winapi", +] + [[package]] name = "clap" version = "3.0.0-beta.2" @@ -212,11 +260,28 @@ dependencies = [ "cache-padded", ] +[[package]] +name = "constant_time_eq" +version = "0.1.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "245097e9a4535ee1e3e3931fcfcd55a796a44c643e8596ff6566d68f09b87bbc" + +[[package]] +name = "crossbeam-utils" +version = "0.8.1" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "02d96d1e189ef58269ebe5b97953da3274d83a93af647c2ddd6f9dab28cedb8d" +dependencies = [ + "autocfg", + "cfg-if 1.0.0", + "lazy_static", +] + [[package]] name = "crossterm" -version = "0.18.0" +version = "0.18.2" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "c2fcdc3c9cf8ee446222e8ee8691a6d21b563b8fe1a64b1873080db7b5b23cf0" +checksum = "4e86d73f2a0b407b5768d10a8c720cf5d2df49a9efc10ca09176d201ead4b7fb" dependencies = [ "bitflags", "crossterm_winapi", @@ -231,13 +296,34 @@ dependencies = [ [[package]] name = "crossterm_winapi" -version = "0.6.1" +version = "0.6.2" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "057b7146d02fb50175fd7dbe5158f6097f33d02831f43b4ee8ae4ddf67b68f5c" +checksum = "c2265c3f8e080075d9b6417aa72293fc71662f34b4af2612d8d1b074d29510db" dependencies = [ "winapi", ] +[[package]] +name = "dirs" +version = "2.0.2" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "13aea89a5c93364a98e9b37b2fa237effbb694d5cfe01c5b70941f7eb087d5e3" +dependencies = [ + "cfg-if 0.1.10", + "dirs-sys", +] + +[[package]] +name = "dirs-sys" +version = "0.3.5" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "8e93d7f5705de3e49895a2b5e0b8855a1c27f080192ae9c32a6432d50741a57a" +dependencies = [ + "libc", + "redox_users", + "winapi", +] + [[package]] name = "event-listener" version = "2.5.1" @@ -253,6 +339,25 @@ dependencies = [ "instant", ] +[[package]] +name = "fern" +version = "0.6.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "8c9a4820f0ccc8a7afd67c39a0f1a0f4b07ca1725164271a64939d7aeb9af065" +dependencies = [ + "log", +] + +[[package]] +name = "form_urlencoded" +version = "1.0.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "ece68d15c92e84fa4f19d3780f1294e5ca82a78a6d515f1efaabcc144688be00" +dependencies = [ + "matches", + "percent-encoding", +] + [[package]] name = "futf" version = "0.1.4" @@ -263,23 +368,29 @@ dependencies = [ "new_debug_unreachable", ] +[[package]] +name = "futures" +version = "0.1.30" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "4c7e4c2612746b0df8fed4ce0c69156021b704c9aefa360311c04e6e9e002eed" + [[package]] name = "futures-core" -version = "0.3.6" +version = "0.3.8" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "d674eaa0056896d5ada519900dbf97ead2e46a7b6621e8160d79e2f2e1e2784b" +checksum = "847ce131b72ffb13b6109a221da9ad97a64cbe48feb1028356b836b47b8f1748" [[package]] name = "futures-io" -version = "0.3.6" +version = "0.3.8" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "5fc94b64bb39543b4e432f1790b6bf18e3ee3b74653c5449f63310e9a74b123c" +checksum = "611834ce18aaa1bd13c4b374f5d653e1027cf99b6b502584ff8c9a64413b30bb" [[package]] name = "futures-lite" -version = "1.11.1" +version = "1.11.2" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "381a7ad57b1bad34693f63f6f377e1abded7a9c85c9d3eb6771e11c60aaadab9" +checksum = "5e6c079abfac3ab269e2927ec048dabc89d009ebfdda6b8ee86624f30c689658" dependencies = [ "fastrand", "futures-core", @@ -290,6 +401,60 @@ dependencies = [ "waker-fn", ] +[[package]] +name = "futures-macro" +version = "0.3.8" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "77408a692f1f97bcc61dc001d752e00643408fbc922e4d634c655df50d595556" +dependencies = [ + "proc-macro-hack", + "proc-macro2", + "quote", + "syn", +] + +[[package]] +name = "futures-task" +version = "0.3.8" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "7c554eb5bf48b2426c4771ab68c6b14468b6e76cc90996f528c3338d761a4d0d" +dependencies = [ + "once_cell", +] + +[[package]] +name = "futures-util" +version = "0.3.8" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "d304cff4a7b99cfb7986f7d43fbe93d175e72e704a8860787cc95e9ffd85cbd2" +dependencies = [ + "futures-core", + "futures-macro", + "futures-task", + "pin-project", + "pin-utils", + "proc-macro-hack", + "proc-macro-nested", + "slab", +] + +[[package]] +name = "getrandom" +version = "0.1.15" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "fc587bc0ec293155d5bfa6b9891ec18a1e330c234f896ea47fbada4cadbe47e6" +dependencies = [ + "cfg-if 0.1.10", + "libc", + "wasi 0.9.0+wasi-snapshot-preview1", +] + +[[package]] +name = "glob" +version = "0.3.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "9b919933a397b79c37e33b77bb2aa3dc8eb6e165ad809e58ff75bc7db2e34574" + [[package]] name = "hashbrown" version = "0.9.1" @@ -312,6 +477,28 @@ dependencies = [ "unicode-width", ] +[[package]] +name = "helix-lsp" +version = "0.1.0" +dependencies = [ + "anyhow", + "futures-util", + "glob", + "helix-core", + "helix-view", + "jsonrpc-core", + "log", + "lsp-types", + "once_cell", + "pathdiff", + "serde", + "serde_json", + "shellexpand", + "smol", + "thiserror", + "url", +] + [[package]] name = "helix-syntax" version = "0.1.0" @@ -325,10 +512,15 @@ name = "helix-term" version = "0.1.0" dependencies = [ "anyhow", + "chrono", "clap", "crossterm", + "fern", + "futures-util", "helix-core", + "helix-lsp", "helix-view", + "log", "num_cpus", "smol", "tui", @@ -342,7 +534,9 @@ dependencies = [ "crossterm", "helix-core", "once_cell", + "smol", "tui", + "url", ] [[package]] @@ -354,6 +548,17 @@ dependencies = [ "libc", ] +[[package]] +name = "idna" +version = "0.2.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "02e2673c30ee86b5b96a9cb52ad15718aa1f966f5ab9ad54a8b95d5ca33120a9" +dependencies = [ + "matches", + "unicode-bidi", + "unicode-normalization", +] + [[package]] name = "indexmap" version = "1.6.0" @@ -366,13 +571,19 @@ dependencies = [ [[package]] name = "instant" -version = "0.1.7" +version = "0.1.9" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "63312a18f7ea8760cdd0a7c5aac1a619752a246b833545e3e36d1f81f7cd9e66" +checksum = "61124eeebbd69b8190558df225adf7e4caafce0d743919e5d6b19652314ec5ec" dependencies = [ - "cfg-if", + "cfg-if 1.0.0", ] +[[package]] +name = "itoa" +version = "0.4.6" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "dc6f3ad7b9d11a0c00842ff8de1b60ee58661048eb8049ed33c73594f359d7e6" + [[package]] name = "jobserver" version = "0.1.21" @@ -382,6 +593,19 @@ dependencies = [ "libc", ] +[[package]] +name = "jsonrpc-core" +version = "15.1.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "0745a6379e3edc893c84ec203589790774e4247420033e71a76d3ab4687991fa" +dependencies = [ + "futures", + "log", + "serde", + "serde_derive", + "serde_json", +] + [[package]] name = "lazy_static" version = "1.4.0" @@ -390,15 +614,15 @@ checksum = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646" [[package]] name = "libc" -version = "0.2.79" +version = "0.2.80" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "2448f6066e80e3bfc792e9c98bf705b4b0fc6e8ef5b43e5889aff0eaa9c58743" +checksum = "4d58d1b70b004888f764dfbf6a26a3b0342a1632d33968e4a179d8011c760614" [[package]] name = "lock_api" -version = "0.4.1" +version = "0.4.2" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "28247cc5a5be2f05fbcd76dd0cf2c7d3b5400cb978a28042abcd4fa0b3f8261c" +checksum = "dd96ffd135b2fd7b973ac026d28085defbe8983df057ced3eb4f2130b0831312" dependencies = [ "scopeguard", ] @@ -409,7 +633,21 @@ version = "0.4.11" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "4fabed175da42fed1fa0746b0ea71f412aa9d35e76e95e59b192c64b9dc2bf8b" dependencies = [ - "cfg-if", + "cfg-if 0.1.10", +] + +[[package]] +name = "lsp-types" +version = "0.84.0" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "3b95be71fe205e44de754185bcf86447b65813ce1ceb298f8d3793ade5fff08d" +dependencies = [ + "base64 0.12.3", + "bitflags", + "serde", + "serde_json", + "serde_repr", + "url", ] [[package]] @@ -418,17 +656,23 @@ version = "0.1.1" source = "registry+https://github.com/rust-lang/crates.io-index" checksum = "c41e0c4fef86961ac6d6f8a82609f55f31b05e4fce149ac5710e439df7619ba4" +[[package]] +name = "matches" +version = "0.1.8" +source = "registry+https://github.com/rust-lang/crates.io-index" +checksum = "7ffc5c5338469d4d3ea17d269fa8ea3512ad247247c30bd2df69e68309ed0a08" + [[package]] name = "memchr" -version = "2.3.3" +version = "2.3.4" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "3728d817d99e5ac407411fa471ff9800a778d88a24685968b36824eaf4bee400" +checksum = "0ee1c47aaa256ecabcaea351eae4a9b01ef39ed810004e298d2511ed284b1525" [[package]] name = "mio" -version = "0.7.3" +version = "0.7.6" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "e53a6ea5f38c0a48ca42159868c6d8e1bd56c0451238856cc08d58563643bdc3" +checksum = "f33bc887064ef1fd66020c9adfc45bb9f33d75a42096c81e7c56c65b75dd1a8b" dependencies = [ "libc", "log", @@ -439,9 +683,9 @@ dependencies = [ [[package]] name = "miow" -version = "0.3.5" +version = "0.3.6" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "07b88fb9795d4d36d62a012dfbf49a8f5cf12751f36d31a9dbe66d528e58979e" +checksum = "5a33c1b55807fbed163481b5ba66db4b2fa6cde694a5027be10fb724206c5897" dependencies = [ "socket2", "winapi", @@ -465,13 +709,32 @@ checksum = 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name = "smallvec" -version = "1.4.2" +version = "1.5.0" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "fbee7696b84bbf3d89a1c2eccff0850e3047ed46bfcd2e92c29a2d074d57e252" +checksum = "7acad6f34eb9e8a259d3283d1e8c1d34d7415943d4895f65cc73813c7396fc85" [[package]] name = "smol" -version = "1.2.4" +version = "1.2.5" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "aaf8ded16994c0ae59596c6e4733c76faeb0533c26fd5ca1b1bc89271a049a66" +checksum = "85cf3b5351f3e783c1d79ab5fc604eeed8b8ae9abd36b166e8b87a089efd85e4" dependencies = [ "async-channel", "async-executor", @@ -631,16 +1047,27 @@ dependencies = [ [[package]] name = "socket2" -version = "0.3.15" +version = "0.3.17" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "b1fa70dc5c8104ec096f4fe7ede7a221d35ae13dcd19ba1ad9a81d2cab9a1c44" +checksum = "2c29947abdee2a218277abeca306f25789c938e500ea5a9d4b12a5a504466902" dependencies = [ - "cfg-if", + "cfg-if 1.0.0", 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a/Cargo.toml b/Cargo.toml index 25dbe725..d7dab22e 100644 --- a/Cargo.toml +++ b/Cargo.toml @@ -4,6 +4,7 @@ members = [ "helix-view", "helix-term", "helix-syntax", + "helix-lsp", ] # Build helix-syntax in release mode to make the code path faster in development. diff --git a/helix-core/src/diagnostic.rs b/helix-core/src/diagnostic.rs new file mode 100644 index 00000000..96ed6746 --- /dev/null +++ b/helix-core/src/diagnostic.rs @@ -0,0 +1,7 @@ +use crate::Range; + +pub struct Diagnostic { + pub range: (usize, usize), + pub line: usize, + pub message: String, +} diff --git a/helix-core/src/history.rs b/helix-core/src/history.rs index e6d9a738..66445525 100644 --- a/helix-core/src/history.rs +++ b/helix-core/src/history.rs @@ -57,37 +57,31 @@ impl History { self.cursor == 0 } - pub fn undo(&mut self, state: &mut State) { + // TODO: I'd like to pass Transaction by reference but it fights with the borrowck + + pub fn undo(&mut self) -> Option { if self.at_root() { // We're at the root of undo, nothing to do. - return; + return None; } let current_revision = &self.revisions[self.cursor]; - // TODO: pass the return value through? It should always succeed - let success = current_revision.revert.apply(state); - - if !success { - panic!("Failed to apply undo!"); - } - self.cursor = current_revision.parent; + + Some(current_revision.revert.clone()) } - pub fn redo(&mut self, state: &mut State) { + pub fn redo(&mut self) -> Option { let current_revision = &self.revisions[self.cursor]; // for now, simply pick the latest child (linear undo / redo) if let Some((index, transaction)) = current_revision.children.last() { - let success = transaction.apply(state); - - if !success { - panic!("Failed to apply redo!"); - } - self.cursor = *index; + + return Some(transaction.clone()); } + None } } @@ -120,17 +114,27 @@ mod test { assert_eq!("hello 世界!", state.doc()); // --- + fn undo(history: &mut History, state: &mut State) { + if let Some(transaction) = history.undo() { + transaction.apply(state); + } + } + fn redo(history: &mut History, state: &mut State) { + if let Some(transaction) = history.redo() { + transaction.apply(state); + } + } - history.undo(&mut state); + undo(&mut history, &mut state); assert_eq!("hello world!", state.doc()); - history.redo(&mut state); + redo(&mut history, &mut state); assert_eq!("hello 世界!", state.doc()); - history.undo(&mut state); - history.undo(&mut state); + undo(&mut history, &mut state); + undo(&mut history, &mut state); assert_eq!("hello", state.doc()); // undo at root is a no-op - history.undo(&mut state); + undo(&mut history, &mut state); assert_eq!("hello", state.doc()); } } diff --git a/helix-core/src/indent.rs b/helix-core/src/indent.rs index 2e1a095e..6b9a1ab1 100644 --- a/helix-core/src/indent.rs +++ b/helix-core/src/indent.rs @@ -111,17 +111,17 @@ fn find_first_non_whitespace_char(state: &State, line_num: usize) -> usize { start } -fn suggested_indent_for_line(state: &State, line_num: usize) -> usize { +fn suggested_indent_for_line(syntax: Option<&Syntax>, state: &State, line_num: usize) -> usize { let line = state.doc.line(line_num); let current = indent_level_for_line(line); let start = find_first_non_whitespace_char(state, line_num); - suggested_indent_for_pos(state, start) + suggested_indent_for_pos(syntax, state, start) } -pub fn suggested_indent_for_pos(state: &State, pos: usize) -> usize { - if let Some(syntax) = &state.syntax { +pub fn suggested_indent_for_pos(syntax: Option<&Syntax>, state: &State, pos: usize) -> usize { + if let Some(syntax) = syntax { let byte_start = state.doc.char_to_byte(pos); let node = get_highest_syntax_node_at_bytepos(syntax, byte_start); @@ -163,13 +163,18 @@ mod test { ", ); - let mut state = State::new(doc); - state.set_language("source.rust", &[]); - - assert_eq!(suggested_indent_for_line(&state, 0), 0); // mod - assert_eq!(suggested_indent_for_line(&state, 1), 1); // fn - assert_eq!(suggested_indent_for_line(&state, 2), 2); // 1 + 1 - assert_eq!(suggested_indent_for_line(&state, 4), 1); // } - assert_eq!(suggested_indent_for_line(&state, 5), 0); // } + let state = State::new(doc); + // TODO: set_language + let language_config = crate::syntax::LOADER + .language_config_for_scope("source.rust") + .unwrap(); + let highlight_config = language_config.highlight_config(&[]).unwrap().unwrap(); + let syntax = Syntax::new(&state.doc, highlight_config.clone()); + + assert_eq!(suggested_indent_for_line(Some(&syntax), &state, 0), 0); // mod + assert_eq!(suggested_indent_for_line(Some(&syntax), &state, 1), 1); // fn + assert_eq!(suggested_indent_for_line(Some(&syntax), &state, 2), 2); // 1 + 1 + assert_eq!(suggested_indent_for_line(Some(&syntax), &state, 4), 1); // } + assert_eq!(suggested_indent_for_line(Some(&syntax), &state, 5), 0); // } } } diff --git a/helix-core/src/lib.rs b/helix-core/src/lib.rs index 62d23a10..ddf1439c 100644 --- a/helix-core/src/lib.rs +++ b/helix-core/src/lib.rs @@ -1,4 +1,5 @@ #![allow(unused)] +mod diagnostic; pub mod graphemes; mod history; pub mod indent; @@ -22,7 +23,8 @@ pub use selection::Range; pub use selection::Selection; pub use syntax::Syntax; +pub use diagnostic::Diagnostic; pub use history::History; pub use state::State; -pub use transaction::{Assoc, Change, ChangeSet, Transaction}; +pub use transaction::{Assoc, Change, ChangeSet, Operation, Transaction}; diff --git a/helix-core/src/selection.rs b/helix-core/src/selection.rs index 13c820f1..9413fead 100644 --- a/helix-core/src/selection.rs +++ b/helix-core/src/selection.rs @@ -179,6 +179,11 @@ impl Selection { } } + /// Constructs a selection holding a single cursor. + pub fn point(pos: usize) -> Self { + Self::single(pos, pos) + } + #[must_use] pub fn new(ranges: SmallVec<[Range; 1]>, primary_index: usize) -> Self { fn normalize(mut ranges: SmallVec<[Range; 1]>, mut primary_index: usize) -> Selection { diff --git a/helix-core/src/state.rs b/helix-core/src/state.rs index 1b0a67ae..4d531aa0 100644 --- a/helix-core/src/state.rs +++ b/helix-core/src/state.rs @@ -1,33 +1,14 @@ use crate::graphemes::{nth_next_grapheme_boundary, nth_prev_grapheme_boundary, RopeGraphemes}; use crate::syntax::LOADER; -use crate::{ChangeSet, Position, Range, Rope, RopeSlice, Selection, Syntax}; +use crate::{ChangeSet, Diagnostic, Position, Range, Rope, RopeSlice, Selection, Syntax}; use anyhow::Error; -use std::path::PathBuf; - -#[derive(Copy, Clone, PartialEq, Eq, Hash)] -pub enum Mode { - Normal, - Insert, - Goto, -} - /// A state represents the current editor state of a single buffer. +#[derive(Clone)] pub struct State { // TODO: fields should be private but we need to refactor commands.rs first - /// Path to file on disk. - pub path: Option, pub doc: Rope, pub selection: Selection, - pub mode: Mode, - - pub restore_cursor: bool, - - // - pub syntax: Option, - /// Pending changes since last history commit. - pub changes: ChangeSet, - pub old_state: Option<(Rope, Selection)>, } #[derive(Copy, Clone, PartialEq, Eq)] @@ -46,57 +27,12 @@ pub enum Granularity { impl State { #[must_use] pub fn new(doc: Rope) -> Self { - let changes = ChangeSet::new(&doc); - let old_state = Some((doc.clone(), Selection::single(0, 0))); - Self { - path: None, doc, selection: Selection::single(0, 0), - mode: Mode::Normal, - restore_cursor: false, - syntax: None, - changes, - old_state, } } - // TODO: passing scopes here is awkward - pub fn load(path: PathBuf, scopes: &[String]) -> Result { - use std::{env, fs::File, io::BufReader, path::PathBuf}; - let _current_dir = env::current_dir()?; - - let doc = Rope::from_reader(BufReader::new(File::open(path.clone())?))?; - - // TODO: create if not found - - let mut state = Self::new(doc); - - if let Some(language_config) = LOADER.language_config_for_file_name(path.as_path()) { - let highlight_config = language_config.highlight_config(scopes).unwrap().unwrap(); - // TODO: config.configure(scopes) is now delayed, is that ok? - - let syntax = Syntax::new(&state.doc, highlight_config.clone()); - - state.syntax = Some(syntax); - }; - - state.path = Some(path); - - Ok(state) - } - - pub fn set_language(&mut self, scope: &str, scopes: &[String]) { - if let Some(language_config) = LOADER.language_config_for_scope(scope) { - let highlight_config = language_config.highlight_config(scopes).unwrap().unwrap(); - // TODO: config.configure(scopes) is now delayed, is that ok? - - let syntax = Syntax::new(&self.doc, highlight_config.clone()); - - self.syntax = Some(syntax); - }; - } - // TODO: doc/selection accessors // TODO: be able to take either Rope or RopeSlice @@ -110,16 +46,6 @@ impl State { &self.selection } - #[inline] - pub fn mode(&self) -> Mode { - self.mode - } - - #[inline] - pub fn path(&self) -> Option<&PathBuf> { - self.path.as_ref() - } - // pub fn doc(&self, range: R) -> RopeSlice // where // R: std::ops::RangeBounds, diff --git a/helix-core/src/syntax.rs b/helix-core/src/syntax.rs index 02903637..70d42c47 100644 --- a/helix-core/src/syntax.rs +++ b/helix-core/src/syntax.rs @@ -62,11 +62,15 @@ impl LanguageConfiguration { }) .map(Option::as_ref) } + + pub fn scope(&self) -> &str { + &self.scope + } } use once_cell::sync::Lazy; -pub(crate) static LOADER: Lazy = Lazy::new(Loader::init); +pub static LOADER: Lazy = Lazy::new(Loader::init); pub struct Loader { // highlight_names ? diff --git a/helix-core/src/transaction.rs b/helix-core/src/transaction.rs index 6f3956aa..f1cb2ca1 100644 --- a/helix-core/src/transaction.rs +++ b/helix-core/src/transaction.rs @@ -5,8 +5,9 @@ use std::convert::TryFrom; /// (from, to, replacement) pub type Change = (usize, usize, Option); +// TODO: pub(crate) #[derive(Debug, Clone, PartialEq, Eq)] -pub(crate) enum Operation { +pub enum Operation { /// Move cursor by n characters. Retain(usize), /// Delete n characters. @@ -40,6 +41,12 @@ impl ChangeSet { } // TODO: from iter + // + + #[doc(hidden)] // used by lsp to convert to LSP changes + pub fn changes(&self) -> &[Operation] { + &self.changes + } #[must_use] fn len_after(&self) -> usize { @@ -351,22 +358,6 @@ pub struct Transaction { // scroll_into_view } -/// Like std::mem::replace() except it allows the replacement value to be mapped from the -/// original value. -pub fn take_with(mut_ref: &mut T, closure: F) -where - F: FnOnce(T) -> T, -{ - use std::{panic, ptr}; - - unsafe { - let old_t = ptr::read(mut_ref); - let new_t = panic::catch_unwind(panic::AssertUnwindSafe(|| closure(old_t))) - .unwrap_or_else(|_| ::std::process::abort()); - ptr::write(mut_ref, new_t); - } -} - impl Transaction { /// Create a new, empty transaction. pub fn new(state: &mut State) -> Self { @@ -376,29 +367,21 @@ impl Transaction { } } + pub fn changes(&self) -> &ChangeSet { + &self.changes + } + /// Returns true if applied successfully. pub fn apply(&self, state: &mut State) -> bool { if !self.changes.is_empty() { - // TODO: also avoid mapping the selection if not necessary - - let old_doc = state.doc().clone(); - // apply changes to the document if !self.changes.apply(&mut state.doc) { return false; } - - // Compose this transaction with the previous one - take_with(&mut state.changes, |changes| { - changes.compose(self.changes.clone()).unwrap() - }); - - if let Some(syntax) = &mut state.syntax { - // TODO: no unwrap - syntax.update(&old_doc, &state.doc, &self.changes).unwrap(); - } } + // TODO: also avoid mapping the selection if not necessary + // update the selection: either take the selection specified in the transaction, or map the // current selection through changes. state.selection = self diff --git a/helix-lsp/Cargo.toml b/helix-lsp/Cargo.toml new file mode 100644 index 00000000..2ecd0cc1 --- /dev/null +++ b/helix-lsp/Cargo.toml @@ -0,0 +1,26 @@ +[package] +name = "helix-lsp" +version = "0.1.0" +authors = ["Blaž Hrastnik "] +edition = "2018" + +# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html + +[dependencies] +helix-core = { path = "../helix-core" } +helix-view = { path = "../helix-view" } +once_cell = "1.4" + +lsp-types = { version = "0.84", features = ["proposed"] } +smol = "1.2" +url = "2" +pathdiff = "0.2" +shellexpand = "2.0" +glob = "0.3" +anyhow = "1" +serde_json = "1.0" +serde = { version = "1.0", features = ["derive"] } +jsonrpc-core = "15.1" +futures-util = "0.3" +thiserror = "1" +log = "0.4" diff --git a/helix-lsp/src/client.rs b/helix-lsp/src/client.rs new file mode 100644 index 00000000..1f07cf89 --- /dev/null +++ b/helix-lsp/src/client.rs @@ -0,0 +1,355 @@ +use crate::{ + transport::{Payload, Transport}, + Call, Error, +}; + +type Result = core::result::Result; + +use helix_core::{ChangeSet, Transaction}; +use helix_view::Document; + +// use std::collections::HashMap; +use std::sync::atomic::{AtomicU64, Ordering}; + +use jsonrpc_core as jsonrpc; +use lsp_types as lsp; +use serde_json::Value; + +use smol::{ + channel::{Receiver, Sender}, + io::{BufReader, BufWriter}, + // prelude::*, + process::{Child, ChildStderr, Command, Stdio}, + Executor, +}; + +pub struct Client { + _process: Child, + stderr: BufReader, + + outgoing: Sender, + pub incoming: Receiver, + + pub request_counter: AtomicU64, + + capabilities: Option, + // TODO: handle PublishDiagnostics Version + // diagnostics: HashMap>, +} + +impl Client { + pub fn start(ex: &Executor, cmd: &str, args: &[String]) -> Self { + let mut process = Command::new(cmd) + .args(args) + .stdin(Stdio::piped()) + .stdout(Stdio::piped()) + .stderr(Stdio::piped()) + .spawn() + .expect("Failed to start language server"); + // smol makes sure the process is reaped on drop, but using kill_on_drop(true) maybe? + + // TODO: do we need bufreader/writer here? or do we use async wrappers on unblock? + let writer = BufWriter::new(process.stdin.take().expect("Failed to open stdin")); + let reader = BufReader::new(process.stdout.take().expect("Failed to open stdout")); + let stderr = BufReader::new(process.stderr.take().expect("Failed to open stderr")); + + let (incoming, outgoing) = Transport::start(ex, reader, writer); + + Client { + _process: process, + stderr, + + outgoing, + incoming, + + request_counter: AtomicU64::new(0), + + capabilities: None, + // diagnostics: HashMap::new(), + } + } + + fn next_request_id(&self) -> jsonrpc::Id { + let id = self.request_counter.fetch_add(1, Ordering::Relaxed); + jsonrpc::Id::Num(id) + } + + fn to_params(value: Value) -> Result { + use jsonrpc::Params; + + let params = match value { + Value::Null => Params::None, + Value::Bool(_) | Value::Number(_) | Value::String(_) => Params::Array(vec![value]), + Value::Array(vec) => Params::Array(vec), + Value::Object(map) => Params::Map(map), + }; + + Ok(params) + } + + /// Execute a RPC request on the language server. + pub async fn request(&self, params: R::Params) -> Result + where + R::Params: serde::Serialize, + R::Result: core::fmt::Debug, // TODO: temporary + { + let params = serde_json::to_value(params)?; + + let request = jsonrpc::MethodCall { + jsonrpc: Some(jsonrpc::Version::V2), + id: self.next_request_id(), + method: R::METHOD.to_string(), + params: Self::to_params(params)?, + }; + + let (tx, rx) = smol::channel::bounded::>(1); + + self.outgoing + .send(Payload::Request { + chan: tx, + value: request, + }) + .await + .map_err(|e| Error::Other(e.into()))?; + + let response = rx.recv().await.map_err(|e| Error::Other(e.into()))??; + + let response = serde_json::from_value(response)?; + + // TODO: we should pass request to a sender thread via a channel + // so it can't be interleaved + + // TODO: responses can be out of order, we need to register a single shot response channel + + Ok(response) + } + + /// Send a RPC notification to the language server. + pub async fn notify(&self, params: R::Params) -> Result<()> + where + R::Params: serde::Serialize, + { + let params = serde_json::to_value(params)?; + + let notification = jsonrpc::Notification { + jsonrpc: Some(jsonrpc::Version::V2), + method: R::METHOD.to_string(), + params: Self::to_params(params)?, + }; + + self.outgoing + .send(Payload::Notification(notification)) + .await + .map_err(|e| Error::Other(e.into()))?; + + Ok(()) + } + + /// Reply to a language server RPC call. + pub async fn reply( + &self, + id: jsonrpc::Id, + result: core::result::Result, + ) -> Result<()> { + use jsonrpc::{Failure, Output, Success, Version}; + + let output = match result { + Ok(result) => Output::Success(Success { + jsonrpc: Some(Version::V2), + id, + result, + }), + Err(error) => Output::Failure(Failure { + jsonrpc: Some(Version::V2), + id, + error, + }), + }; + + self.outgoing + .send(Payload::Response(output)) + .await + .map_err(|e| Error::Other(e.into()))?; + + Ok(()) + } + + // ------------------------------------------------------------------------------------------- + // General messages + // ------------------------------------------------------------------------------------------- + + pub async fn initialize(&mut self) -> Result<()> { + // TODO: delay any requests that are triggered prior to initialize + + #[allow(deprecated)] + let params = lsp::InitializeParams { + process_id: Some(std::process::id()), + root_path: None, + // root_uri: Some(lsp_types::Url::parse("file://localhost/")?), + root_uri: None, // set to project root in the future + initialization_options: None, + capabilities: lsp::ClientCapabilities { + ..Default::default() + }, + trace: None, + workspace_folders: None, + client_info: None, + locale: None, // TODO + }; + + let response = self.request::(params).await?; + self.capabilities = Some(response.capabilities); + + // next up, notify + self.notify::(lsp::InitializedParams {}) + .await?; + + Ok(()) + } + + pub async fn shutdown(&self) -> Result<()> { + self.request::(()).await + } + + pub async fn exit(&self) -> Result<()> { + self.notify::(()).await + } + + // ------------------------------------------------------------------------------------------- + // Text document + // ------------------------------------------------------------------------------------------- + + pub async fn text_document_did_open(&mut self, doc: &Document) -> Result<()> { + self.notify::(lsp::DidOpenTextDocumentParams { + text_document: lsp::TextDocumentItem { + uri: lsp::Url::from_file_path(doc.path().unwrap()).unwrap(), + language_id: "rust".to_string(), // TODO: hardcoded for now + version: doc.version, + text: String::from(doc.text()), + }, + }) + .await + } + + fn to_changes(changeset: &ChangeSet) -> Vec { + let mut iter = changeset.changes().iter().peekable(); + let mut old_pos = 0; + + let mut changes = Vec::new(); + + use crate::util::pos_to_lsp_pos; + use helix_core::Operation::*; + + // TEMP + let rope = helix_core::Rope::from(""); + let old_text = rope.slice(..); + + while let Some(change) = iter.next() { + let len = match change { + Delete(i) | Retain(i) => *i, + Insert(_) => 0, + }; + let old_end = old_pos + len; + + match change { + Retain(_) => {} + Delete(_) => { + let start = pos_to_lsp_pos(&old_text, old_pos); + let end = pos_to_lsp_pos(&old_text, old_end); + + // a subsequent ins means a replace, consume it + if let Some(Insert(s)) = iter.peek() { + iter.next(); + + // replacement + changes.push(lsp::TextDocumentContentChangeEvent { + range: Some(lsp::Range::new(start, end)), + text: s.into(), + range_length: None, + }); + } else { + // deletion + changes.push(lsp::TextDocumentContentChangeEvent { + range: Some(lsp::Range::new(start, end)), + text: "".to_string(), + range_length: None, + }); + }; + } + Insert(s) => { + let start = pos_to_lsp_pos(&old_text, old_pos); + + // insert + changes.push(lsp::TextDocumentContentChangeEvent { + range: Some(lsp::Range::new(start, start)), + text: s.into(), + range_length: None, + }); + } + } + old_pos = old_end; + } + + changes + } + + // TODO: trigger any time history.commit_revision happens + pub async fn text_document_did_change( + &mut self, + doc: &Document, + transaction: &Transaction, + ) -> Result<()> { + // figure out what kind of sync the server supports + + let capabilities = self.capabilities.as_ref().unwrap(); // TODO: needs post init + + let sync_capabilities = match capabilities.text_document_sync { + Some(lsp::TextDocumentSyncCapability::Kind(kind)) => kind, + Some(lsp::TextDocumentSyncCapability::Options(lsp::TextDocumentSyncOptions { + change: Some(kind), + .. + })) => kind, + // None | SyncOptions { changes: None } + _ => return Ok(()), + }; + + let changes = match sync_capabilities { + lsp::TextDocumentSyncKind::Full => { + vec![lsp::TextDocumentContentChangeEvent { + // range = None -> whole document + range: None, //Some(Range) + range_length: None, // u64 apparently deprecated + text: "".to_string(), + }] // TODO: probably need old_state here too? + } + lsp::TextDocumentSyncKind::Incremental => Self::to_changes(transaction.changes()), + lsp::TextDocumentSyncKind::None => return Ok(()), + }; + + self.notify::(lsp::DidChangeTextDocumentParams { + text_document: lsp::VersionedTextDocumentIdentifier::new( + lsp::Url::from_file_path(doc.path().unwrap()).unwrap(), + doc.version, + ), + content_changes: changes, + }) + .await + } + + // TODO: impl into() TextDocumentIdentifier / VersionedTextDocumentIdentifier for Document. + + pub async fn text_document_did_close(&mut self, doc: &Document) -> Result<()> { + self.notify::(lsp::DidCloseTextDocumentParams { + text_document: lsp::TextDocumentIdentifier::new( + lsp::Url::from_file_path(doc.path().unwrap()).unwrap(), + ), + }) + .await + } + + // will_save / will_save_wait_until + + pub async fn text_document_did_save(&mut self) -> anyhow::Result<()> { + unimplemented!() + } +} diff --git a/helix-lsp/src/lib.rs b/helix-lsp/src/lib.rs new file mode 100644 index 00000000..eae6fa86 --- /dev/null +++ b/helix-lsp/src/lib.rs @@ -0,0 +1,117 @@ +mod client; +mod transport; + +pub use jsonrpc_core as jsonrpc; +pub use lsp_types as lsp; + +pub use once_cell::sync::{Lazy, OnceCell}; + +pub use client::Client; +pub use lsp::{Position, Url}; + +use thiserror::Error; + +use std::{collections::HashMap, sync::Arc}; + +#[derive(Error, Debug)] +pub enum Error { + #[error("protocol error: {0}")] + Rpc(#[from] jsonrpc::Error), + #[error("failed to parse: {0}")] + Parse(#[from] serde_json::Error), + #[error("request timed out")] + Timeout, + #[error(transparent)] + Other(#[from] anyhow::Error), +} + +pub mod util { + use super::*; + + pub fn lsp_pos_to_pos(doc: &helix_core::RopeSlice, pos: lsp::Position) -> usize { + let line = doc.line_to_char(pos.line as usize); + let line_start = doc.char_to_utf16_cu(line); + doc.utf16_cu_to_char(pos.character as usize + line_start) + } + pub fn pos_to_lsp_pos(doc: &helix_core::RopeSlice, pos: usize) -> lsp::Position { + let line = doc.char_to_line(pos); + let line_start = doc.char_to_utf16_cu(line); + let col = doc.char_to_utf16_cu(pos) - line_start; + + lsp::Position::new(line as u32, col as u32) + } +} + +#[derive(Debug, PartialEq, Clone)] +pub enum Notification { + PublishDiagnostics(lsp::PublishDiagnosticsParams), +} + +impl Notification { + pub fn parse(method: &str, params: jsonrpc::Params) -> Notification { + use lsp::notification::Notification as _; + + match method { + lsp::notification::PublishDiagnostics::METHOD => { + let params: lsp::PublishDiagnosticsParams = params + .parse() + .expect("Failed to parse PublishDiagnostics params"); + + // TODO: need to loop over diagnostics and distinguish them by URI + Notification::PublishDiagnostics(params) + } + _ => unimplemented!("unhandled notification: {}", method), + } + } +} + +pub use jsonrpc::Call; + +type LanguageId = String; + +pub static REGISTRY: Lazy = Lazy::new(Registry::init); + +pub struct Registry { + inner: HashMap>>, +} + +impl Registry { + pub fn init() -> Self { + Self { + inner: HashMap::new(), + } + } + + pub fn get(&self, id: &str, ex: &smol::Executor) -> Option> { + // TODO: use get_or_try_init and propagate the error + self.inner + .get(id) + .map(|cell| { + cell.get_or_init(|| { + // TODO: lookup defaults for id (name, args) + + // initialize a new client + let client = Client::start(&ex, "rust-analyzer", &[]); + // TODO: also call initialize().await() + Arc::new(client) + }) + }) + .cloned() + } +} + +// REGISTRY = HashMap>> +// spawn one server per language type, need to spawn one per workspace if server doesn't support +// workspaces +// +// could also be a client per root dir +// +// storing a copy of Option>> on Document would make the LSP client easily +// accessible during edit/save callbacks +// +// the event loop needs to process all incoming streams, maybe we can just have that be a separate +// task that's continually running and store the state on the client, then use read lock to +// retrieve data during render +// -> PROBLEM: how do you trigger an update on the editor side when data updates? +// +// -> The data updates should pull all events until we run out so we don't frequently re-render diff --git a/helix-lsp/src/transport.rs b/helix-lsp/src/transport.rs new file mode 100644 index 00000000..4c349a13 --- /dev/null +++ b/helix-lsp/src/transport.rs @@ -0,0 +1,212 @@ +use std::collections::HashMap; + +use log::debug; + +use crate::{Error, Notification}; + +type Result = core::result::Result; + +use jsonrpc_core as jsonrpc; +use serde_json::Value; + +use smol::prelude::*; + +use smol::{ + channel::{Receiver, Sender}, + io::{BufReader, BufWriter}, + process::{ChildStderr, ChildStdin, ChildStdout}, + Executor, +}; + +pub(crate) enum Payload { + Request { + chan: Sender>, + value: jsonrpc::MethodCall, + }, + Notification(jsonrpc::Notification), + Response(jsonrpc::Output), +} + +use serde::{Deserialize, Serialize}; +/// A type representing all possible values sent from the server to the client. +#[derive(Debug, PartialEq, Clone, Deserialize, Serialize)] +#[serde(deny_unknown_fields)] +#[serde(untagged)] +enum Message { + /// A regular JSON-RPC request output (single response). + Output(jsonrpc::Output), + /// A JSON-RPC request or notification. + Call(jsonrpc::Call), +} + +pub(crate) struct Transport { + incoming: Sender, + outgoing: Receiver, + + pending_requests: HashMap>>, + headers: HashMap, + + writer: BufWriter, + reader: BufReader, +} + +impl Transport { + pub fn start( + ex: &Executor, + reader: BufReader, + writer: BufWriter, + ) -> (Receiver, Sender) { + let (incoming, rx) = smol::channel::unbounded(); + let (tx, outgoing) = smol::channel::unbounded(); + + let transport = Self { + reader, + writer, + incoming, + outgoing, + pending_requests: Default::default(), + headers: Default::default(), + }; + + ex.spawn(transport.duplex()).detach(); + + (rx, tx) + } + + async fn recv( + reader: &mut (impl AsyncBufRead + Unpin), + headers: &mut HashMap, + ) -> core::result::Result { + // read headers + loop { + let mut header = String::new(); + // detect pipe closed if 0 + reader.read_line(&mut header).await?; + let header = header.trim(); + + if header.is_empty() { + break; + } + + let parts: Vec<&str> = header.split(": ").collect(); + if parts.len() != 2 { + return Err(std::io::Error::new( + std::io::ErrorKind::Other, + "Failed to parse header", + )); + } + headers.insert(parts[0].to_string(), parts[1].to_string()); + } + + // find content-length + let content_length = headers.get("Content-Length").unwrap().parse().unwrap(); + + let mut content = vec![0; content_length]; + reader.read_exact(&mut content).await?; + let msg = String::from_utf8(content).unwrap(); + + // read data + + // try parsing as output (server response) or call (server request) + let output: serde_json::Result = serde_json::from_str(&msg); + + Ok(output?) + } + + pub async fn send_payload(&mut self, payload: Payload) -> anyhow::Result<()> { + match payload { + Payload::Request { chan, value } => { + self.pending_requests.insert(value.id.clone(), chan); + + let json = serde_json::to_string(&value)?; + self.send(json).await + } + Payload::Notification(value) => { + let json = serde_json::to_string(&value)?; + self.send(json).await + } + Payload::Response(error) => { + let json = serde_json::to_string(&error)?; + self.send(json).await + } + } + } + + pub async fn send(&mut self, request: String) -> anyhow::Result<()> { + debug!("-> {}", request); + + // send the headers + self.writer + .write_all(format!("Content-Length: {}\r\n\r\n", request.len()).as_bytes()) + .await?; + + // send the body + self.writer.write_all(request.as_bytes()).await?; + + self.writer.flush().await?; + + Ok(()) + } + + async fn recv_msg(&mut self, msg: Message) -> anyhow::Result<()> { + match msg { + Message::Output(output) => self.recv_response(output).await?, + Message::Call(call) => { + self.incoming.send(call).await?; + // let notification = Notification::parse(&method, params); + } + }; + Ok(()) + } + + async fn recv_response(&mut self, output: jsonrpc::Output) -> anyhow::Result<()> { + match output { + jsonrpc::Output::Success(jsonrpc::Success { id, result, .. }) => { + debug!("<- {}", result); + + let tx = self + .pending_requests + .remove(&id) + .expect("pending_request with id not found!"); + tx.send(Ok(result)).await?; + } + jsonrpc::Output::Failure(jsonrpc::Failure { id, error, .. }) => { + let tx = self + .pending_requests + .remove(&id) + .expect("pending_request with id not found!"); + tx.send(Err(error.into())).await?; + } + msg => unimplemented!("{:?}", msg), + } + Ok(()) + } + + pub async fn duplex(mut self) { + use futures_util::{select, FutureExt}; + loop { + select! { + // client -> server + msg = self.outgoing.next().fuse() => { + if msg.is_none() { + break; + } + let msg = msg.unwrap(); + + self.send_payload(msg).await.unwrap(); + } + // server <- client + msg = Self::recv(&mut self.reader, &mut self.headers).fuse() => { + if msg.is_err() { + break; + } + let msg = msg.unwrap(); + + debug!("<- {:?}", msg); + + self.recv_msg(msg).await.unwrap(); + } + } + } + } +} diff --git a/helix-term/Cargo.toml b/helix-term/Cargo.toml index ed546090..c1560ee7 100644 --- a/helix-term/Cargo.toml +++ b/helix-term/Cargo.toml @@ -14,12 +14,20 @@ path = "src/main.rs" [dependencies] helix-core = { path = "../helix-core" } helix-view = { path = "../helix-view", features = ["term"]} +helix-lsp = { path = "../helix-lsp"} anyhow = "1" smol = "1" -num_cpus = "1.13" +num_cpus = "1" # tui = { version = "0.12", default-features = false, features = ["crossterm"] } tui = { git = "https://github.com/fdehau/tui-rs", default-features = false, features = ["crossterm"] } crossterm = { version = "0.18", features = ["event-stream"] } clap = { version = "3.0.0-beta.2 ", default-features = false, features = ["std", "cargo"] } + +futures-util = "0.3" + +# Logging +fern = "0.6" +chrono = "0.4" +log = "0.4" diff --git a/helix-term/src/application.rs b/helix-term/src/application.rs index 1e719f5f..141779ec 100644 --- a/helix-term/src/application.rs +++ b/helix-term/src/application.rs @@ -1,6 +1,14 @@ use clap::ArgMatches as Args; -use helix_core::{indent::TAB_WIDTH, state::Mode, syntax::HighlightEvent, Position, Range, State}; -use helix_view::{commands, keymap, prompt::Prompt, Editor, View}; +use helix_core::{indent::TAB_WIDTH, syntax::HighlightEvent, Position, Range, State}; +use helix_view::{ + commands, + document::Mode, + keymap::{self, Keymaps}, + prompt::Prompt, + Document, Editor, Theme, View, +}; + +use log::{debug, info}; use std::{ borrow::Cow, @@ -15,8 +23,7 @@ use anyhow::Error; use crossterm::{ cursor, - cursor::position, - event::{self, read, Event, EventStream, KeyCode, KeyEvent}, + event::{read, Event, EventStream, KeyCode, KeyEvent}, execute, queue, terminal::{self, disable_raw_mode, enable_raw_mode}, }; @@ -25,21 +32,23 @@ use tui::{ backend::CrosstermBackend, buffer::Buffer as Surface, layout::Rect, - style::{Color, Style}, + style::{Color, Modifier, Style}, }; -const OFFSET: u16 = 6; // 5 linenr + 1 gutter +const OFFSET: u16 = 7; // 1 diagnostic + 5 linenr + 1 gutter type Terminal = tui::Terminal>; -static EX: smol::Executor = smol::Executor::new(); - const BASE_WIDTH: u16 = 30; -pub struct Application { +pub struct Application<'a> { editor: Editor, prompt: Option, terminal: Renderer, + + keymap: Keymaps, + executor: &'a smol::Executor<'a>, + language_server: helix_lsp::Client, } struct Renderer { @@ -75,30 +84,29 @@ impl Renderer { self.cache = Surface::empty(area); } - pub fn render_view(&mut self, view: &mut View, viewport: Rect) { - self.render_buffer(view, viewport); - self.render_statusline(view); + pub fn render_view(&mut self, view: &mut View, viewport: Rect, theme: &Theme) { + self.render_buffer(view, viewport, theme); + self.render_statusline(view, theme); } // TODO: ideally not &mut View but highlights require it because of cursor cache - pub fn render_buffer(&mut self, view: &mut View, viewport: Rect) { + pub fn render_buffer(&mut self, view: &mut View, viewport: Rect, theme: &Theme) { let area = Rect::new(0, 0, self.size.0, self.size.1); self.surface.reset(); // reset is faster than allocating new empty surface // clear with background color - self.surface - .set_style(area, view.theme.get("ui.background")); + self.surface.set_style(area, theme.get("ui.background")); // TODO: inefficient, should feed chunks.iter() to tree_sitter.parse_with(|offset, pos|) - let source_code = view.state.doc().to_string(); + let source_code = view.doc.text().to_string(); let last_line = view.last_line(); let range = { // calculate viewport byte ranges - let start = view.state.doc().line_to_byte(view.first_line); - let end = view.state.doc().line_to_byte(last_line) - + view.state.doc().line(last_line).len_bytes(); + let start = view.doc.text().line_to_byte(view.first_line); + let end = view.doc.text().line_to_byte(last_line) + + view.doc.text().line(last_line).len_bytes(); start..end }; @@ -106,7 +114,7 @@ impl Renderer { // TODO: range doesn't actually restrict source, just highlight range // TODO: cache highlight results // TODO: only recalculate when state.doc is actually modified - let highlights: Vec<_> = match view.state.syntax.as_mut() { + let highlights: Vec<_> = match view.doc.syntax.as_mut() { Some(syntax) => { syntax .highlight_iter(source_code.as_bytes(), Some(range), None, |_| None) @@ -122,6 +130,7 @@ impl Renderer { let mut visual_x = 0; let mut line = 0u16; let visible_selections: Vec = view + .doc .state .selection() .ranges() @@ -142,15 +151,15 @@ impl Renderer { HighlightEvent::Source { start, end } => { // TODO: filter out spans out of viewport for now.. - let start = view.state.doc().byte_to_char(start); - let end = view.state.doc().byte_to_char(end); // <-- index 744, len 743 + let start = view.doc.text().byte_to_char(start); + let end = view.doc.text().byte_to_char(end); // <-- index 744, len 743 - let text = view.state.doc().slice(start..end); + let text = view.doc.text().slice(start..end); use helix_core::graphemes::{grapheme_width, RopeGraphemes}; let style = match spans.first() { - Some(span) => view.theme.get(view.theme.scopes()[span.0].as_str()), + Some(span) => theme.get(theme.scopes()[span.0].as_str()), None => Style::default().fg(Color::Rgb(164, 160, 232)), // lavender }; @@ -200,6 +209,16 @@ impl Renderer { style }; + // ugh, improve with a traverse method + // or interleave highlight spans with selection and diagnostic spans + let style = if view.doc.diagnostics.iter().any(|diagnostic| { + diagnostic.range.0 <= char_index && diagnostic.range.1 > char_index + }) { + style.clone().add_modifier(Modifier::UNDERLINED) + } else { + style + }; + // TODO: paint cursor heads except primary self.surface @@ -207,23 +226,28 @@ impl Renderer { visual_x += width; } - // if grapheme == "\t" char_index += 1; } } } } - let style: Style = view.theme.get("ui.linenr"); + + let style: Style = theme.get("ui.linenr"); + let warning: Style = theme.get("warning"); let last_line = view.last_line(); for (i, line) in (view.first_line..last_line).enumerate() { + if view.doc.diagnostics.iter().any(|d| d.line == line) { + self.surface.set_stringn(0, i as u16, "●", 1, warning); + } + self.surface - .set_stringn(0, i as u16, format!("{:>5}", line + 1), 5, style); + .set_stringn(1, i as u16, format!("{:>5}", line + 1), 5, style); } } - pub fn render_statusline(&mut self, view: &View) { - let mode = match view.state.mode() { + pub fn render_statusline(&mut self, view: &View, theme: &Theme) { + let mode = match view.doc.mode() { Mode::Insert => "INS", Mode::Normal => "NOR", Mode::Goto => "GOTO", @@ -231,13 +255,20 @@ impl Renderer { // statusline self.surface.set_style( Rect::new(0, self.size.1 - 2, self.size.0, 1), - view.theme.get("ui.statusline"), + theme.get("ui.statusline"), ); self.surface .set_string(1, self.size.1 - 2, mode, self.text_color); + + self.surface.set_string( + self.size.0 - 10, + self.size.1 - 2, + format!("{}", view.doc.diagnostics.len()), + self.text_color, + ); } - pub fn render_prompt(&mut self, view: &View, prompt: &Prompt) { + pub fn render_prompt(&mut self, view: &View, prompt: &Prompt, theme: &Theme) { // completion if !prompt.completion.is_empty() { // TODO: find out better way of clearing individual lines of the screen @@ -256,7 +287,7 @@ impl Renderer { } self.surface.set_style( Rect::new(0, self.size.1 - col_height - 2, self.size.0, col_height), - view.theme.get("ui.statusline"), + theme.get("ui.statusline"), ); for (i, command) in prompt.completion.iter().enumerate() { let color = if prompt.completion_selection_index.is_some() @@ -302,14 +333,14 @@ impl Renderer { pub fn render_cursor(&mut self, view: &View, prompt: Option<&Prompt>, viewport: Rect) { let mut stdout = stdout(); - match view.state.mode() { + match view.doc.mode() { Mode::Insert => write!(stdout, "\x1B[6 q"), mode => write!(stdout, "\x1B[2 q"), }; let pos = if let Some(prompt) = prompt { Position::new(self.size.0 as usize, 2 + prompt.cursor) } else { - if let Some(path) = view.state.path() { + if let Some(path) = view.doc.path() { self.surface.set_string( 6, self.size.1 - 1, @@ -318,10 +349,10 @@ impl Renderer { ); } - let cursor = view.state.selection().cursor(); + let cursor = view.doc.state.selection().cursor(); let mut pos = view - .screen_coords_at_pos(&view.state.doc().slice(..), cursor) + .screen_coords_at_pos(&view.doc.text().slice(..), cursor) .expect("Cursor is out of bounds."); pos.col += viewport.x as usize; pos.row += viewport.y as usize; @@ -332,8 +363,8 @@ impl Renderer { } } -impl Application { - pub fn new(mut args: Args) -> Result { +impl<'a> Application<'a> { + pub fn new(mut args: Args, executor: &'a smol::Executor<'a>) -> Result { let terminal = Renderer::new()?; let mut editor = Editor::new(); @@ -341,11 +372,18 @@ impl Application { editor.open(file, terminal.size)?; } + let language_server = helix_lsp::Client::start(&executor, "rust-analyzer", &[]); + let mut app = Self { editor, terminal, // TODO; move to state prompt: None, + + // + keymap: keymap::default(), + executor, + language_server, }; Ok(app) @@ -354,13 +392,16 @@ impl Application { fn render(&mut self) { let viewport = Rect::new(OFFSET, 0, self.terminal.size.0, self.terminal.size.1 - 2); // - 2 for statusline and prompt - if let Some(view) = &mut self.editor.view { - self.terminal.render_view(view, viewport); + // SAFETY: we cheat around the view_mut() borrow because it doesn't allow us to also borrow + // theme. Theme is immutable mutating view won't disrupt theme_ref. + let theme_ref = unsafe { &*(&self.editor.theme as *const Theme) }; + if let Some(view) = self.editor.view_mut() { + self.terminal.render_view(view, viewport, theme_ref); if let Some(prompt) = &self.prompt { if prompt.should_close { self.prompt = None; } else { - self.terminal.render_prompt(view, prompt); + self.terminal.render_prompt(view, prompt, theme_ref); } } } @@ -368,16 +409,19 @@ impl Application { self.terminal.draw(); // TODO: drop unwrap - self.terminal.render_cursor( - self.editor.view.as_ref().unwrap(), - self.prompt.as_ref(), - viewport, - ); + self.terminal + .render_cursor(self.editor.view().unwrap(), self.prompt.as_ref(), viewport); } pub async fn event_loop(&mut self) { let mut reader = EventStream::new(); - let keymap = keymap::default(); + + // initialize lsp + self.language_server.initialize().await.unwrap(); + self.language_server + .text_document_did_open(&self.editor.view().unwrap().doc) + .await + .unwrap(); self.render(); @@ -386,125 +430,225 @@ impl Application { break; } - // Handle key events - match reader.next().await { - Some(Ok(Event::Resize(width, height))) => { - self.terminal.resize(width, height); + use futures_util::{select, FutureExt}; + select! { + event = reader.next().fuse() => { + self.handle_terminal_events(event).await + } + call = self.language_server.incoming.next().fuse() => { + self.handle_language_server_message(call).await + } + } + } + } - // TODO: simplistic ensure cursor in view for now - if let Some(view) = &mut self.editor.view { - view.size = self.terminal.size; - view.ensure_cursor_in_view() - }; + pub async fn handle_terminal_events( + &mut self, + event: Option>, + ) { + // Handle key events + match event { + Some(Ok(Event::Resize(width, height))) => { + self.terminal.resize(width, height); + + // TODO: simplistic ensure cursor in view for now + // TODO: loop over views + if let Some(view) = self.editor.view_mut() { + view.size = self.terminal.size; + view.ensure_cursor_in_view() + }; + + self.render(); + } + Some(Ok(Event::Key(event))) => { + // if there's a prompt, it takes priority + if let Some(prompt) = &mut self.prompt { + self.prompt + .as_mut() + .unwrap() + .handle_input(event, &mut self.editor); self.render(); - } - Some(Ok(Event::Key(event))) => { - // if there's a prompt, it takes priority - if let Some(prompt) = &mut self.prompt { - self.prompt - .as_mut() - .unwrap() - .handle_input(event, &mut self.editor); - - self.render(); - } else if let Some(view) = &mut self.editor.view { - let keys = vec![event]; - // TODO: sequences (`gg`) - // TODO: handle count other than 1 - match view.state.mode() { - Mode::Insert => { - if let Some(command) = keymap[&Mode::Insert].get(&keys) { - command(view, 1); - } else if let KeyEvent { - code: KeyCode::Char(c), - .. - } = event - { - commands::insert::insert_char(view, c); - } + } else if let Some(view) = self.editor.view_mut() { + let keys = vec![event]; + // TODO: sequences (`gg`) + // TODO: handle count other than 1 + match view.doc.mode() { + Mode::Insert => { + if let Some(command) = self.keymap[&Mode::Insert].get(&keys) { + let mut cx = helix_view::commands::Context { + view, + executor: self.executor, + count: 1, + }; + + command(&mut cx); + } else if let KeyEvent { + code: KeyCode::Char(c), + .. + } = event + { + let mut cx = helix_view::commands::Context { + view, + executor: self.executor, + count: 1, + }; + commands::insert::insert_char(&mut cx, c); + } + view.ensure_cursor_in_view(); + } + Mode::Normal => { + if let &[KeyEvent { + code: KeyCode::Char(':'), + .. + }] = keys.as_slice() + { + let prompt = Prompt::new( + ":".to_owned(), + |_input: &str| { + // TODO: i need this duplicate list right now to avoid borrow checker issues + let command_list = vec![ + String::from("q"), + String::from("aaa"), + String::from("bbb"), + String::from("ccc"), + String::from("ddd"), + String::from("eee"), + String::from("averylongcommandaverylongcommandaverylongcommandaverylongcommandaverylongcommand"), + String::from("q"), + String::from("aaa"), + String::from("bbb"), + String::from("ccc"), + String::from("ddd"), + String::from("eee"), + String::from("q"), + String::from("aaa"), + String::from("bbb"), + String::from("ccc"), + String::from("ddd"), + String::from("eee"), + String::from("q"), + String::from("aaa"), + String::from("bbb"), + String::from("ccc"), + String::from("ddd"), + String::from("eee"), + String::from("q"), + String::from("aaa"), + String::from("bbb"), + String::from("ccc"), + String::from("ddd"), + String::from("eee"), + ]; + command_list + .into_iter() + .filter(|command| command.contains(_input)) + .collect() + }, // completion + |editor: &mut Editor, input: &str| match input { + "q" => editor.should_close = true, + _ => (), + }, + ); + + self.prompt = Some(prompt); + + // HAXX: special casing for command mode + } else if let Some(command) = self.keymap[&Mode::Normal].get(&keys) { + let mut cx = helix_view::commands::Context { + view, + executor: self.executor, + count: 1, + }; + command(&mut cx); + + // TODO: simplistic ensure cursor in view for now view.ensure_cursor_in_view(); } - Mode::Normal => { - if let &[KeyEvent { - code: KeyCode::Char(':'), - .. - }] = keys.as_slice() - { - let prompt = Prompt::new( - ":".to_owned(), - |_input: &str| { - // TODO: i need this duplicate list right now to avoid borrow checker issues - let command_list = vec![ - String::from("q"), - String::from("aaa"), - String::from("bbb"), - String::from("ccc"), - String::from("ddd"), - String::from("eee"), - String::from("averylongcommandaverylongcommandaverylongcommandaverylongcommandaverylongcommand"), - String::from("q"), - String::from("aaa"), - String::from("bbb"), - String::from("ccc"), - String::from("ddd"), - String::from("eee"), - String::from("q"), - String::from("aaa"), - String::from("bbb"), - String::from("ccc"), - String::from("ddd"), - String::from("eee"), - String::from("q"), - String::from("aaa"), - String::from("bbb"), - String::from("ccc"), - String::from("ddd"), - String::from("eee"), - String::from("q"), - String::from("aaa"), - String::from("bbb"), - String::from("ccc"), - String::from("ddd"), - String::from("eee"), - ]; - command_list - .into_iter() - .filter(|command| command.contains(_input)) - .collect() - }, // completion - |editor: &mut Editor, input: &str| match input { - "q" => editor.should_close = true, - _ => (), - }, - ); - - self.prompt = Some(prompt); - - // HAXX: special casing for command mode - } else if let Some(command) = keymap[&Mode::Normal].get(&keys) { - command(view, 1); - - // TODO: simplistic ensure cursor in view for now - view.ensure_cursor_in_view(); - } + } + mode => { + if let Some(command) = self.keymap[&mode].get(&keys) { + let mut cx = helix_view::commands::Context { + view, + executor: self.executor, + count: 1, + }; + command(&mut cx); + + // TODO: simplistic ensure cursor in view for now + view.ensure_cursor_in_view(); } - mode => { - if let Some(command) = keymap[&mode].get(&keys) { - command(view, 1); + } + } + self.render(); + } + } + Some(Ok(Event::Mouse(_))) => (), // unhandled + Some(Err(x)) => panic!(x), + None => panic!(), + }; + } - // TODO: simplistic ensure cursor in view for now - view.ensure_cursor_in_view(); - } - } + pub async fn handle_language_server_message(&mut self, call: Option) { + use helix_lsp::{Call, Notification}; + match call { + Some(Call::Notification(helix_lsp::jsonrpc::Notification { + method, params, .. + })) => { + let notification = Notification::parse(&method, params); + match notification { + Notification::PublishDiagnostics(params) => { + let path = Some(params.uri.to_file_path().unwrap()); + let view = self + .editor + .views + .iter_mut() + .find(|view| view.doc.path == path); + + if let Some(view) = view { + let doc = view.doc.text().slice(..); + let diagnostics = params + .diagnostics + .into_iter() + .map(|diagnostic| { + use helix_lsp::util::lsp_pos_to_pos; + let start = lsp_pos_to_pos(&doc, diagnostic.range.start); + let end = lsp_pos_to_pos(&doc, diagnostic.range.end); + + helix_core::Diagnostic { + range: (start, end), + line: diagnostic.range.start.line as usize, + message: diagnostic.message, + // severity + // code + // source + } + }) + .collect(); + + view.doc.diagnostics = diagnostics; + + // TODO: we want to process all the events in queue, then render. publishDiagnostic tends to send a whole bunch of events + self.render(); } - self.render(); } + _ => unreachable!(), } - Some(Ok(Event::Mouse(_))) => (), // unhandled - Some(Err(x)) => panic!(x), - None => break, } + Some(Call::MethodCall(call)) => { + debug!("Method not found {}", call.method); + + self.language_server.reply( + call.id, + // TODO: make a Into trait that can cast to Err(jsonrpc::Error) + Err(helix_lsp::jsonrpc::Error { + code: helix_lsp::jsonrpc::ErrorCode::MethodNotFound, + message: "Method not found".to_string(), + data: None, + }), + ); + } + _ => unreachable!(), } } diff --git a/helix-term/src/main.rs b/helix-term/src/main.rs index e14a328f..9378d3ee 100644 --- a/helix-term/src/main.rs +++ b/helix-term/src/main.rs @@ -11,6 +11,39 @@ use anyhow::Error; static EX: smol::Executor = smol::Executor::new(); +fn setup_logging(verbosity: u64) -> Result<(), fern::InitError> { + let mut base_config = fern::Dispatch::new(); + + // Let's say we depend on something which whose "info" level messages are too + // verbose to include in end-user output. If we don't need them, + // let's not include them. + // .level_for("overly-verbose-target", log::LevelFilter::Warn) + + base_config = match verbosity { + 0 => base_config.level(log::LevelFilter::Warn), + 1 => base_config.level(log::LevelFilter::Info), + 2 => base_config.level(log::LevelFilter::Debug), + _3_or_more => base_config.level(log::LevelFilter::Trace), + }; + + // Separate file config so we can include year, month and day in file logs + let file_config = fern::Dispatch::new() + .format(|out, message, record| { + out.finish(format_args!( + "{} {} [{}] {}", + chrono::Local::now().format("%Y-%m-%dT%H:%M:%S%.3f"), + record.target(), + record.level(), + message + )) + }) + .chain(fern::log_file("helix.log")?); + + base_config.chain(file_config).apply()?; + + Ok(()) +} + fn main() -> Result<(), Error> { let args = clap::app_from_crate!() .arg( @@ -20,15 +53,27 @@ fn main() -> Result<(), Error> { .multiple(true) .index(1), ) + .arg( + Arg::new("verbose") + .about("Increases logging verbosity each use for up to 3 times") + .short('v') + .takes_value(false) + .multiple_occurrences(true), + ) .get_matches(); + let verbosity: u64 = args.occurrences_of("verbose"); + + setup_logging(verbosity).expect("failed to initialize logging."); + for _ in 0..num_cpus::get() { std::thread::spawn(move || smol::block_on(EX.run(smol::future::pending::<()>()))); } - smol::block_on(EX.run(async { - Application::new(args).unwrap().run().await; - })); + let mut app = Application::new(args, &EX).unwrap(); + + // we use the thread local executor to spawn the application task separately from the work pool + smol::block_on(app.run()); Ok(()) } diff --git a/helix-view/Cargo.toml b/helix-view/Cargo.toml index 330ae696..0a48b721 100644 --- a/helix-view/Cargo.toml +++ b/helix-view/Cargo.toml @@ -19,3 +19,6 @@ helix-core = { path = "../helix-core" } tui = { git = "https://github.com/fdehau/tui-rs", default-features = false, features = ["crossterm"], optional = true} crossterm = { version = "0.18", features = ["event-stream"], optional = true} once_cell = "1.4" +url = "2" + +smol = "1" diff --git a/helix-view/src/commands.rs b/helix-view/src/commands.rs index 1d7737f0..c135a3da 100644 --- a/helix-view/src/commands.rs +++ b/helix-view/src/commands.rs @@ -3,52 +3,65 @@ use helix_core::{ indent::TAB_WIDTH, regex::Regex, register, selection, - state::{Direction, Granularity, Mode, State}, + state::{Direction, Granularity, State}, ChangeSet, Range, Selection, Tendril, Transaction, }; use once_cell::sync::Lazy; use crate::{ + document::Mode, prompt::Prompt, view::{View, PADDING}, }; +pub struct Context<'a, 'b> { + pub count: usize, + pub view: &'a mut View, + pub executor: &'a smol::Executor<'b>, +} + /// A command is a function that takes the current state and a count, and does a side-effect on the /// state (usually by creating and applying a transaction). -pub type Command = fn(view: &mut View, count: usize); +pub type Command = fn(cx: &mut Context); -pub fn move_char_left(view: &mut View, count: usize) { - // TODO: use a transaction - let selection = view - .state - .move_selection(Direction::Backward, Granularity::Character, count); - view.state.selection = selection; +pub fn move_char_left(cx: &mut Context) { + let selection = + cx.view + .doc + .state + .move_selection(Direction::Backward, Granularity::Character, cx.count); + cx.view.doc.set_selection(selection); } -pub fn move_char_right(view: &mut View, count: usize) { - // TODO: use a transaction - view.state.selection = - view.state - .move_selection(Direction::Forward, Granularity::Character, count); +pub fn move_char_right(cx: &mut Context) { + let selection = + cx.view + .doc + .state + .move_selection(Direction::Forward, Granularity::Character, cx.count); + cx.view.doc.set_selection(selection); } -pub fn move_line_up(view: &mut View, count: usize) { - // TODO: use a transaction - view.state.selection = view - .state - .move_selection(Direction::Backward, Granularity::Line, count); +pub fn move_line_up(cx: &mut Context) { + let selection = + cx.view + .doc + .state + .move_selection(Direction::Backward, Granularity::Line, cx.count); + cx.view.doc.set_selection(selection); } -pub fn move_line_down(view: &mut View, count: usize) { - // TODO: use a transaction - view.state.selection = view - .state - .move_selection(Direction::Forward, Granularity::Line, count); +pub fn move_line_down(cx: &mut Context) { + let selection = + cx.view + .doc + .state + .move_selection(Direction::Forward, Granularity::Line, cx.count); + cx.view.doc.set_selection(selection); } -pub fn move_line_end(view: &mut View, _count: usize) { - // TODO: use a transaction - let lines = selection_lines(&view.state); +pub fn move_line_end(cx: &mut Context) { + let lines = selection_lines(&cx.view.doc.state); let positions = lines .into_iter() @@ -57,89 +70,80 @@ pub fn move_line_end(view: &mut View, _count: usize) { // Line end is pos at the start of next line - 1 // subtract another 1 because the line ends with \n - view.state.doc.line_to_char(index + 1).saturating_sub(2) + cx.view.doc.text().line_to_char(index + 1).saturating_sub(2) }) .map(|pos| Range::new(pos, pos)); let selection = Selection::new(positions.collect(), 0); - let transaction = Transaction::new(&mut view.state).with_selection(selection); - - transaction.apply(&mut view.state); + cx.view.doc.set_selection(selection); } -pub fn move_line_start(view: &mut View, _count: usize) { - let lines = selection_lines(&view.state); +pub fn move_line_start(cx: &mut Context) { + let lines = selection_lines(&cx.view.doc.state); let positions = lines .into_iter() .map(|index| { // adjust all positions to the start of the line. - view.state.doc.line_to_char(index) + cx.view.doc.text().line_to_char(index) }) .map(|pos| Range::new(pos, pos)); let selection = Selection::new(positions.collect(), 0); - let transaction = Transaction::new(&mut view.state).with_selection(selection); - - transaction.apply(&mut view.state); + cx.view.doc.set_selection(selection); } -pub fn move_next_word_start(view: &mut View, count: usize) { - let pos = view.state.move_pos( - view.state.selection.cursor(), +pub fn move_next_word_start(cx: &mut Context) { + let pos = cx.view.doc.state.move_pos( + cx.view.doc.selection().cursor(), Direction::Forward, Granularity::Word, - count, + cx.count, ); - // TODO: use a transaction - view.state.selection = Selection::single(pos, pos); + cx.view.doc.set_selection(Selection::point(pos)); } -pub fn move_prev_word_start(view: &mut View, count: usize) { - let pos = view.state.move_pos( - view.state.selection.cursor(), +pub fn move_prev_word_start(cx: &mut Context) { + let pos = cx.view.doc.state.move_pos( + cx.view.doc.selection().cursor(), Direction::Backward, Granularity::Word, - count, + cx.count, ); - // TODO: use a transaction - view.state.selection = Selection::single(pos, pos); + cx.view.doc.set_selection(Selection::point(pos)); } -pub fn move_next_word_end(view: &mut View, count: usize) { +pub fn move_next_word_end(cx: &mut Context) { let pos = State::move_next_word_end( - &view.state.doc().slice(..), - view.state.selection.cursor(), - count, + &cx.view.doc.text().slice(..), + cx.view.doc.selection().cursor(), + cx.count, ); - // TODO: use a transaction - view.state.selection = Selection::single(pos, pos); + cx.view.doc.set_selection(Selection::point(pos)); } -pub fn move_file_start(view: &mut View, _count: usize) { - // TODO: use a transaction - view.state.selection = Selection::single(0, 0); +pub fn move_file_start(cx: &mut Context) { + cx.view.doc.set_selection(Selection::point(0)); - view.state.mode = Mode::Normal; + cx.view.doc.mode = Mode::Normal; } -pub fn move_file_end(view: &mut View, _count: usize) { - // TODO: use a transaction - let text = &view.state.doc; +pub fn move_file_end(cx: &mut Context) { + let text = &cx.view.doc.text(); let last_line = text.line_to_char(text.len_lines().saturating_sub(2)); - view.state.selection = Selection::single(last_line, last_line); + cx.view.doc.set_selection(Selection::point(last_line)); - view.state.mode = Mode::Normal; + cx.view.doc.mode = Mode::Normal; } -pub fn check_cursor_in_view(view: &mut View) -> bool { - let cursor = view.state.selection().cursor(); - let line = view.state.doc().char_to_line(cursor); +pub fn check_cursor_in_view(view: &View) -> bool { + let cursor = view.doc.selection().cursor(); + let line = view.doc.text().char_to_line(cursor); let document_end = view.first_line + view.size.1.saturating_sub(1) as usize; if (line > document_end.saturating_sub(PADDING)) | (line < view.first_line + PADDING) { @@ -148,168 +152,186 @@ pub fn check_cursor_in_view(view: &mut View) -> bool { true } -pub fn page_up(view: &mut View, _count: usize) { - if view.first_line < PADDING { +pub fn page_up(cx: &mut Context) { + if cx.view.first_line < PADDING { return; } - view.first_line = view.first_line.saturating_sub(view.size.1 as usize); + cx.view.first_line = cx.view.first_line.saturating_sub(cx.view.size.1 as usize); - if !check_cursor_in_view(view) { - let text = view.state.doc(); - let pos = text.line_to_char(view.last_line().saturating_sub(PADDING)); - view.state.selection = Selection::single(pos, pos); + if !check_cursor_in_view(cx.view) { + let text = cx.view.doc.text(); + let pos = text.line_to_char(cx.view.last_line().saturating_sub(PADDING)); + cx.view.doc.set_selection(Selection::point(pos)); } } -pub fn page_down(view: &mut View, _count: usize) { - view.first_line += view.size.1 as usize + PADDING; +pub fn page_down(cx: &mut Context) { + cx.view.first_line += cx.view.size.1 as usize + PADDING; - if view.first_line < view.state.doc().len_lines() { - let text = view.state.doc(); - let pos = text.line_to_char(view.first_line as usize); - view.state.selection = Selection::single(pos, pos); + if cx.view.first_line < cx.view.doc.text().len_lines() { + let text = cx.view.doc.text(); + let pos = text.line_to_char(cx.view.first_line as usize); + cx.view.doc.set_selection(Selection::point(pos)); } } -pub fn half_page_up(view: &mut View, _count: usize) { - if view.first_line < PADDING { +pub fn half_page_up(cx: &mut Context) { + if cx.view.first_line < PADDING { return; } - view.first_line = view.first_line.saturating_sub(view.size.1 as usize / 2); + cx.view.first_line = cx + .view + .first_line + .saturating_sub(cx.view.size.1 as usize / 2); - if !check_cursor_in_view(view) { - let text = &view.state.doc; - let pos = text.line_to_char(view.last_line() - PADDING); - view.state.selection = Selection::single(pos, pos); + if !check_cursor_in_view(cx.view) { + let text = &cx.view.doc.text(); + let pos = text.line_to_char(cx.view.last_line() - PADDING); + cx.view.doc.set_selection(Selection::point(pos)); } } -pub fn half_page_down(view: &mut View, _count: usize) { - let lines = view.state.doc().len_lines(); - if view.first_line < lines.saturating_sub(view.size.1 as usize) { - view.first_line += view.size.1 as usize / 2; +pub fn half_page_down(cx: &mut Context) { + let lines = cx.view.doc.text().len_lines(); + if cx.view.first_line < lines.saturating_sub(cx.view.size.1 as usize) { + cx.view.first_line += cx.view.size.1 as usize / 2; } - if !check_cursor_in_view(view) { - let text = view.state.doc(); - let pos = text.line_to_char(view.first_line as usize); - view.state.selection = Selection::single(pos, pos); + if !check_cursor_in_view(cx.view) { + let text = cx.view.doc.text(); + let pos = text.line_to_char(cx.view.first_line as usize); + cx.view.doc.set_selection(Selection::point(pos)); } } // avoid select by default by having a visual mode switch that makes movements into selects -pub fn extend_char_left(view: &mut View, count: usize) { - // TODO: use a transaction - let selection = view - .state - .extend_selection(Direction::Backward, Granularity::Character, count); - view.state.selection = selection; +pub fn extend_char_left(cx: &mut Context) { + let selection = + cx.view + .doc + .state + .extend_selection(Direction::Backward, Granularity::Character, cx.count); + cx.view.doc.set_selection(selection); } -pub fn extend_char_right(view: &mut View, count: usize) { - // TODO: use a transaction - view.state.selection = - view.state - .extend_selection(Direction::Forward, Granularity::Character, count); +pub fn extend_char_right(cx: &mut Context) { + let selection = + cx.view + .doc + .state + .extend_selection(Direction::Forward, Granularity::Character, cx.count); + cx.view.doc.set_selection(selection); } -pub fn extend_line_up(view: &mut View, count: usize) { - // TODO: use a transaction - view.state.selection = - view.state - .extend_selection(Direction::Backward, Granularity::Line, count); +pub fn extend_line_up(cx: &mut Context) { + let selection = + cx.view + .doc + .state + .extend_selection(Direction::Backward, Granularity::Line, cx.count); + cx.view.doc.set_selection(selection); } -pub fn extend_line_down(view: &mut View, count: usize) { - // TODO: use a transaction - view.state.selection = - view.state - .extend_selection(Direction::Forward, Granularity::Line, count); +pub fn extend_line_down(cx: &mut Context) { + let selection = + cx.view + .doc + .state + .extend_selection(Direction::Forward, Granularity::Line, cx.count); + cx.view.doc.set_selection(selection); } -pub fn split_selection_on_newline(view: &mut View, _count: usize) { - let text = &view.state.doc.slice(..); +pub fn split_selection_on_newline(cx: &mut Context) { + let text = &cx.view.doc.text().slice(..); // only compile the regex once #[allow(clippy::trivial_regex)] static REGEX: Lazy = Lazy::new(|| Regex::new(r"\n").unwrap()); - // TODO: use a transaction - view.state.selection = selection::split_on_matches(text, view.state.selection(), ®EX) + let selection = selection::split_on_matches(text, cx.view.doc.selection(), ®EX); + cx.view.doc.set_selection(selection); } -pub fn select_line(view: &mut View, _count: usize) { +pub fn select_line(cx: &mut Context) { // TODO: count - let pos = view.state.selection().primary(); - let text = view.state.doc(); + let pos = cx.view.doc.selection().primary(); + let text = cx.view.doc.text(); let line = text.char_to_line(pos.head); let start = text.line_to_char(line); let end = text.line_to_char(line + 1).saturating_sub(1); - // TODO: use a transaction - view.state.selection = Selection::single(start, end); + cx.view.doc.set_selection(Selection::single(start, end)); } -pub fn delete_selection(view: &mut View, _count: usize) { - let transaction = - Transaction::change_by_selection(&view.state, |range| (range.from(), range.to() + 1, None)); - transaction.apply(&mut view.state); +pub fn delete_selection(cx: &mut Context) { + let transaction = Transaction::change_by_selection(&cx.view.doc.state, |range| { + (range.from(), range.to() + 1, None) + }); + cx.view.doc.apply(&transaction); - append_changes_to_history(view); + append_changes_to_history(cx); } -pub fn change_selection(view: &mut View, count: usize) { - delete_selection(view, count); - insert_mode(view, count); +pub fn change_selection(cx: &mut Context) { + delete_selection(cx); + insert_mode(cx); } -pub fn collapse_selection(view: &mut View, _count: usize) { - view.state.selection = view - .state - .selection - .transform(|range| Range::new(range.head, range.head)) +pub fn collapse_selection(cx: &mut Context) { + let selection = cx + .view + .doc + .selection() + .transform(|range| Range::new(range.head, range.head)); + + cx.view.doc.set_selection(selection); } -pub fn flip_selections(view: &mut View, _count: usize) { - view.state.selection = view - .state - .selection - .transform(|range| Range::new(range.head, range.anchor)) +pub fn flip_selections(cx: &mut Context) { + let selection = cx + .view + .doc + .selection() + .transform(|range| Range::new(range.head, range.anchor)); + + cx.view.doc.set_selection(selection); } -fn enter_insert_mode(view: &mut View) { - view.state.mode = Mode::Insert; +fn enter_insert_mode(cx: &mut Context) { + cx.view.doc.mode = Mode::Insert; - append_changes_to_history(view); + append_changes_to_history(cx); } // inserts at the start of each selection -pub fn insert_mode(view: &mut View, _count: usize) { - enter_insert_mode(view); +pub fn insert_mode(cx: &mut Context) { + enter_insert_mode(cx); - view.state.selection = view - .state - .selection - .transform(|range| Range::new(range.to(), range.from())) + let selection = cx + .view + .doc + .selection() + .transform(|range| Range::new(range.to(), range.from())); + cx.view.doc.set_selection(selection); } // inserts at the end of each selection -pub fn append_mode(view: &mut View, _count: usize) { - enter_insert_mode(view); - view.state.restore_cursor = true; +pub fn append_mode(cx: &mut Context) { + enter_insert_mode(cx); + cx.view.doc.restore_cursor = true; // TODO: as transaction - let text = &view.state.doc.slice(..); - view.state.selection = view.state.selection.transform(|range| { + let text = &cx.view.doc.text().slice(..); + let selection = cx.view.doc.selection().transform(|range| { // TODO: to() + next char Range::new( range.from(), graphemes::next_grapheme_boundary(text, range.to()), ) - }) + }); + cx.view.doc.set_selection(selection); } // TODO: I, A, o and O can share a lot of the primitives. - -pub fn command_mode(_view: &mut View, _count: usize) { +pub fn command_mode(_cx: &mut Context) { unimplemented!() } @@ -329,30 +351,30 @@ fn selection_lines(state: &State) -> Vec { } // I inserts at the start of each line with a selection -pub fn prepend_to_line(view: &mut View, count: usize) { - enter_insert_mode(view); +pub fn prepend_to_line(cx: &mut Context) { + enter_insert_mode(cx); - move_line_start(view, count); + move_line_start(cx); } // A inserts at the end of each line with a selection -pub fn append_to_line(view: &mut View, count: usize) { - enter_insert_mode(view); +pub fn append_to_line(cx: &mut Context) { + enter_insert_mode(cx); - move_line_end(view, count); + move_line_end(cx); } // o inserts a new line after each line with a selection -pub fn open_below(view: &mut View, _count: usize) { - enter_insert_mode(view); +pub fn open_below(cx: &mut Context) { + enter_insert_mode(cx); - let lines = selection_lines(&view.state); + let lines = selection_lines(&cx.view.doc.state); let positions: Vec<_> = lines .into_iter() .map(|index| { // adjust all positions to the end of the line/start of the next one. - view.state.doc.line_to_char(index + 1) + cx.view.doc.text().line_to_char(index + 1) }) .collect(); @@ -373,111 +395,119 @@ pub fn open_below(view: &mut View, _count: usize) { 0, ); - let transaction = Transaction::change(&view.state, changes).with_selection(selection); + let transaction = Transaction::change(&cx.view.doc.state, changes).with_selection(selection); - transaction.apply(&mut view.state); + cx.view.doc.apply(&transaction); } // O inserts a new line before each line with a selection -fn append_changes_to_history(view: &mut View) { - if view.state.changes.is_empty() { +fn append_changes_to_history(cx: &mut Context) { + if cx.view.doc.changes.is_empty() { return; } - let new_changeset = ChangeSet::new(view.state.doc()); - let changes = std::mem::replace(&mut view.state.changes, new_changeset); + let new_changeset = ChangeSet::new(cx.view.doc.text()); + let changes = std::mem::replace(&mut cx.view.doc.changes, new_changeset); // Instead of doing this messy merge we could always commit, and based on transaction // annotations either add a new layer or compose into the previous one. - let transaction = Transaction::from(changes).with_selection(view.state.selection().clone()); + let transaction = Transaction::from(changes).with_selection(cx.view.doc.selection().clone()); - // HAXX: we need to reconstruct the state as it was before the changes.. - let (doc, selection) = view.state.old_state.take().unwrap(); - let mut old_state = State::new(doc); - old_state.selection = selection; + // increment document version + // TODO: needs to happen on undo/redo too + cx.view.doc.version += 1; + // TODO: trigger lsp/documentDidChange with changes + + // HAXX: we need to reconstruct the state as it was before the changes.. + let old_state = std::mem::replace(&mut cx.view.doc.old_state, cx.view.doc.state.clone()); // TODO: take transaction by value? - view.history.commit_revision(&transaction, &old_state); + cx.view + .doc + .history + .commit_revision(&transaction, &old_state); - // TODO: need to start the state with these vals - // HAXX - view.state.old_state = Some((view.state.doc().clone(), view.state.selection.clone())); + // TODO: notify LSP of changes } -pub fn normal_mode(view: &mut View, _count: usize) { - view.state.mode = Mode::Normal; +pub fn normal_mode(cx: &mut Context) { + cx.view.doc.mode = Mode::Normal; - append_changes_to_history(view); + append_changes_to_history(cx); // if leaving append mode, move cursor back by 1 - if view.state.restore_cursor { - let text = &view.state.doc.slice(..); - view.state.selection = view.state.selection.transform(|range| { + if cx.view.doc.restore_cursor { + let text = &cx.view.doc.text().slice(..); + let selection = cx.view.doc.selection().transform(|range| { Range::new( range.from(), graphemes::prev_grapheme_boundary(text, range.to()), ) }); + cx.view.doc.set_selection(selection); - view.state.restore_cursor = false; + cx.view.doc.restore_cursor = false; } } -pub fn goto_mode(view: &mut View, _count: usize) { - view.state.mode = Mode::Goto; +pub fn goto_mode(cx: &mut Context) { + cx.view.doc.mode = Mode::Goto; } // NOTE: Transactions in this module get appended to history when we switch back to normal mode. pub mod insert { use super::*; // TODO: insert means add text just before cursor, on exit we should be on the last letter. - pub fn insert_char(view: &mut View, c: char) { + pub fn insert_char(cx: &mut Context, c: char) { let c = Tendril::from_char(c); - let transaction = Transaction::insert(&view.state, c); + let transaction = Transaction::insert(&cx.view.doc.state, c); - transaction.apply(&mut view.state); + cx.view.doc.apply(&transaction); } - pub fn insert_tab(view: &mut View, _count: usize) { - insert_char(view, '\t'); + pub fn insert_tab(cx: &mut Context) { + insert_char(cx, '\t'); } - pub fn insert_newline(view: &mut View, _count: usize) { - let transaction = Transaction::change_by_selection(&view.state, |range| { - let indent_level = - helix_core::indent::suggested_indent_for_pos(&view.state, range.head); + pub fn insert_newline(cx: &mut Context) { + let transaction = Transaction::change_by_selection(&cx.view.doc.state, |range| { + let indent_level = helix_core::indent::suggested_indent_for_pos( + cx.view.doc.syntax.as_ref(), + &cx.view.doc.state, + range.head, + ); let indent = " ".repeat(TAB_WIDTH).repeat(indent_level); let mut text = String::with_capacity(1 + indent.len()); text.push('\n'); text.push_str(&indent); (range.head, range.head, Some(text.into())) }); - transaction.apply(&mut view.state); + cx.view.doc.apply(&transaction); } // TODO: handle indent-aware delete - pub fn delete_char_backward(view: &mut View, count: usize) { - let text = &view.state.doc.slice(..); - let transaction = Transaction::change_by_selection(&view.state, |range| { + pub fn delete_char_backward(cx: &mut Context) { + let text = &cx.view.doc.text().slice(..); + let transaction = Transaction::change_by_selection(&cx.view.doc.state, |range| { ( - graphemes::nth_prev_grapheme_boundary(text, range.head, count), + graphemes::nth_prev_grapheme_boundary(text, range.head, cx.count), range.head, None, ) }); - transaction.apply(&mut view.state); + cx.view.doc.apply(&transaction); } - pub fn delete_char_forward(view: &mut View, count: usize) { - let text = &view.state.doc.slice(..); - let transaction = Transaction::change_by_selection(&view.state, |range| { + pub fn delete_char_forward(cx: &mut Context) { + let text = &cx.view.doc.text().slice(..); + let transaction = Transaction::change_by_selection(&cx.view.doc.state, |range| { ( range.head, - graphemes::nth_next_grapheme_boundary(text, range.head, count), + graphemes::nth_next_grapheme_boundary(text, range.head, cx.count), None, ) }); - transaction.apply(&mut view.state); + cx.view.doc.apply(&transaction); } } @@ -487,24 +517,32 @@ pub fn insert_char_prompt(prompt: &mut Prompt, c: char) { // Undo / Redo -pub fn undo(view: &mut View, _count: usize) { - view.history.undo(&mut view.state); +pub fn undo(cx: &mut Context) { + if let Some(revert) = cx.view.doc.history.undo() { + cx.view.doc.version += 1; + cx.view.doc.apply(&revert); + } // TODO: each command could simply return a Option, then the higher level handles storing it? } -pub fn redo(view: &mut View, _count: usize) { - view.history.redo(&mut view.state); +pub fn redo(cx: &mut Context) { + if let Some(transaction) = cx.view.doc.history.redo() { + cx.view.doc.version += 1; + cx.view.doc.apply(&transaction); + } } // Yank / Paste -pub fn yank(view: &mut View, _count: usize) { +pub fn yank(cx: &mut Context) { // TODO: should selections be made end inclusive? - let values = view + let values = cx + .view + .doc .state .selection() - .fragments(&view.state.doc().slice(..)) + .fragments(&cx.view.doc.text().slice(..)) .map(|cow| cow.into_owned()) .collect(); @@ -513,7 +551,7 @@ pub fn yank(view: &mut View, _count: usize) { register::set(reg, values); } -pub fn paste(view: &mut View, _count: usize) { +pub fn paste(cx: &mut Context) { // TODO: allow specifying reg let reg = '"'; if let Some(values) = register::get(reg) { @@ -545,19 +583,19 @@ pub fn paste(view: &mut View, _count: usize) { let transaction = if linewise { // paste on the next line // TODO: can simply take a range + modifier and compute the right pos without ifs - let text = view.state.doc(); - Transaction::change_by_selection(&view.state, |range| { + let text = cx.view.doc.text(); + Transaction::change_by_selection(&cx.view.doc.state, |range| { let line_end = text.line_to_char(text.char_to_line(range.head) + 1); (line_end, line_end, Some(values.next().unwrap())) }) } else { - Transaction::change_by_selection(&view.state, |range| { + Transaction::change_by_selection(&cx.view.doc.state, |range| { (range.head + 1, range.head + 1, Some(values.next().unwrap())) }) }; - transaction.apply(&mut view.state); - append_changes_to_history(view); + cx.view.doc.apply(&transaction); + append_changes_to_history(cx); } } @@ -565,9 +603,9 @@ fn get_lines(view: &View) -> Vec { let mut lines = Vec::new(); // Get all line numbers - for range in view.state.selection.ranges() { - let start = view.state.doc.char_to_line(range.from()); - let end = view.state.doc.char_to_line(range.to()); + for range in view.doc.selection().ranges() { + let start = view.doc.text().char_to_line(range.from()); + let end = view.doc.text().char_to_line(range.to()); for line in start..=end { lines.push(line) @@ -578,29 +616,29 @@ fn get_lines(view: &View) -> Vec { lines } -pub fn indent(view: &mut View, _count: usize) { - let lines = get_lines(view); +pub fn indent(cx: &mut Context) { + let lines = get_lines(cx.view); // Indent by one level let indent = Tendril::from(" ".repeat(TAB_WIDTH)); let transaction = Transaction::change( - &view.state, + &cx.view.doc.state, lines.into_iter().map(|line| { - let pos = view.state.doc.line_to_char(line); + let pos = cx.view.doc.text().line_to_char(line); (pos, pos, Some(indent.clone())) }), ); - transaction.apply(&mut view.state); - append_changes_to_history(view); + cx.view.doc.apply(&transaction); + append_changes_to_history(cx); } -pub fn unindent(view: &mut View, _count: usize) { - let lines = get_lines(view); +pub fn unindent(cx: &mut Context) { + let lines = get_lines(cx.view); let mut changes = Vec::with_capacity(lines.len()); for line_idx in lines { - let line = view.state.doc.line(line_idx); + let line = cx.view.doc.text().line(line_idx); let mut width = 0; for ch in line.chars() { @@ -616,18 +654,27 @@ pub fn unindent(view: &mut View, _count: usize) { } if width > 0 { - let start = view.state.doc.line_to_char(line_idx); + let start = cx.view.doc.text().line_to_char(line_idx); changes.push((start, start + width, None)) } } - let transaction = Transaction::change(&view.state, changes.into_iter()); + let transaction = Transaction::change(&cx.view.doc.state, changes.into_iter()); - transaction.apply(&mut view.state); - append_changes_to_history(view); + cx.view.doc.apply(&transaction); + append_changes_to_history(cx); } -pub fn indent_selection(_view: &mut View, _count: usize) { +pub fn indent_selection(_cx: &mut Context) { // loop over each line and recompute proper indentation unimplemented!() } + +// + +pub fn save(cx: &mut Context) { + // Spawns an async task to actually do the saving. This way we prevent blocking. + + // TODO: handle save errors somehow? + cx.executor.spawn(cx.view.doc.save()).detach(); +} diff --git a/helix-view/src/document.rs b/helix-view/src/document.rs new file mode 100644 index 00000000..7c4596ad --- /dev/null +++ b/helix-view/src/document.rs @@ -0,0 +1,209 @@ +use anyhow::Error; +use std::future::Future; +use std::path::PathBuf; + +use helix_core::{ + syntax::LOADER, ChangeSet, Diagnostic, History, Position, Range, Rope, RopeSlice, Selection, + State, Syntax, Transaction, +}; + +#[derive(Copy, Clone, PartialEq, Eq, Hash)] +pub enum Mode { + Normal, + Insert, + Goto, +} + +pub struct Document { + pub state: State, // rope + selection + /// File path on disk. + pub path: Option, + + /// Current editing mode. + pub mode: Mode, + pub restore_cursor: bool, + + /// Tree-sitter AST tree + pub syntax: Option, + /// Corresponding language scope name. Usually `source.`. + pub language: Option, + + /// Pending changes since last history commit. + pub changes: ChangeSet, + pub old_state: State, + pub history: History, + pub version: i32, // should be usize? + + pub diagnostics: Vec, +} + +/// Like std::mem::replace() except it allows the replacement value to be mapped from the +/// original value. +fn take_with(mut_ref: &mut T, closure: F) +where + F: FnOnce(T) -> T, +{ + use std::{panic, ptr}; + + unsafe { + let old_t = ptr::read(mut_ref); + let new_t = panic::catch_unwind(panic::AssertUnwindSafe(|| closure(old_t))) + .unwrap_or_else(|_| ::std::process::abort()); + ptr::write(mut_ref, new_t); + } +} + +use url::Url; + +impl Document { + fn new(state: State) -> Self { + let changes = ChangeSet::new(&state.doc); + let old_state = state.clone(); + + Self { + path: None, + state, + mode: Mode::Normal, + restore_cursor: false, + syntax: None, + language: None, + changes, + old_state, + diagnostics: Vec::new(), + version: 0, + history: History::default(), + } + } + + // TODO: passing scopes here is awkward + // TODO: async fn? + pub fn load(path: PathBuf, scopes: &[String]) -> Result { + use std::{env, fs::File, io::BufReader}; + let _current_dir = env::current_dir()?; + + let doc = Rope::from_reader(BufReader::new(File::open(path.clone())?))?; + + // TODO: create if not found + + let mut doc = Self::new(State::new(doc)); + + if let Some(language_config) = LOADER.language_config_for_file_name(path.as_path()) { + let highlight_config = language_config.highlight_config(scopes).unwrap().unwrap(); + // TODO: config.configure(scopes) is now delayed, is that ok? + + let syntax = Syntax::new(&doc.state.doc, highlight_config.clone()); + + doc.syntax = Some(syntax); + // TODO: maybe just keep an Arc<> pointer to the language_config? + doc.language = Some(language_config.scope().to_string()); + + // TODO: this ties lsp support to tree-sitter enabled languages for now. Language + // config should use Option to let us have non-tree-sitter configs. + + // TODO: circular dep: view <-> lsp + // helix_lsp::REGISTRY; + // view should probably depend on lsp + }; + + // canonicalize path to absolute value + doc.path = Some(std::fs::canonicalize(path)?); + + Ok(doc) + } + + // TODO: do we need some way of ensuring two save operations on the same doc can't run at once? + // or is that handled by the OS/async layer + pub fn save(&self) -> impl Future> { + // we clone and move text + path into the future so that we asynchronously save the current + // state without blocking any further edits. + + let text = self.text().clone(); + let path = self.path.clone().expect("Can't save with no path set!"); // TODO: handle no path + + // TODO: mark changes up to now as saved + // TODO: mark dirty false + + async move { + use smol::{fs::File, prelude::*}; + let mut file = File::create(path).await?; + + // write all the rope chunks to file + for chunk in text.chunks() { + file.write_all(chunk.as_bytes()).await?; + } + // TODO: flush? + + Ok(()) + } // and_then(// lsp.send_text_saved_notification()) + } + + pub fn set_language(&mut self, scope: &str, scopes: &[String]) { + if let Some(language_config) = LOADER.language_config_for_scope(scope) { + let highlight_config = language_config.highlight_config(scopes).unwrap().unwrap(); + // TODO: config.configure(scopes) is now delayed, is that ok? + + let syntax = Syntax::new(&self.state.doc, highlight_config.clone()); + + self.syntax = Some(syntax); + }; + } + + pub fn set_selection(&mut self, selection: Selection) { + // TODO: use a transaction? + self.state.selection = selection; + } + + pub fn apply(&mut self, transaction: &Transaction) -> bool { + let old_doc = self.text().clone(); + + let success = transaction.apply(&mut self.state); + + if !transaction.changes().is_empty() { + // Compose this transaction with the previous one + take_with(&mut self.changes, |changes| { + changes.compose(transaction.changes().clone()).unwrap() + }); + + // TODO: when composing, replace transaction.selection too + + // update tree-sitter syntax tree + if let Some(syntax) = &mut self.syntax { + // TODO: no unwrap + syntax + .update(&old_doc, &self.state.doc, transaction.changes()) + .unwrap(); + } + + // TODO: map state.diagnostics over changes::map_pos too + } + success + } + + #[inline] + pub fn mode(&self) -> Mode { + self.mode + } + + #[inline] + pub fn path(&self) -> Option<&PathBuf> { + self.path.as_ref() + } + + pub fn url(&self) -> Option { + self.path().map(|path| Url::from_file_path(path).unwrap()) + } + + pub fn text(&self) -> &Rope { + &self.state.doc + } + + pub fn selection(&self) -> &Selection { + &self.state.selection + } + + // pub fn slice(&self, range: R) -> RopeSlice where R: RangeBounds { + // self.state.doc.slice + // } + + // TODO: transact(Fn) ? +} diff --git a/helix-view/src/editor.rs b/helix-view/src/editor.rs index c292caed..9fb2ae36 100644 --- a/helix-view/src/editor.rs +++ b/helix-view/src/editor.rs @@ -1,24 +1,48 @@ -use crate::View; +use crate::theme::Theme; +use crate::{Document, View}; use std::path::PathBuf; use anyhow::Error; pub struct Editor { - pub view: Option, + pub views: Vec, + pub focus: usize, pub should_close: bool, + pub theme: Theme, // TODO: share one instance +} + +impl Default for Editor { + fn default() -> Self { + Self::new() + } } impl Editor { pub fn new() -> Self { + let theme = Theme::default(); + Self { - view: None, + views: Vec::new(), + focus: 0, should_close: false, + theme, } } pub fn open(&mut self, path: PathBuf, size: (u16, u16)) -> Result<(), Error> { - self.view = Some(View::open(path, size)?); + let pos = self.views.len(); + let doc = Document::load(path, self.theme.scopes())?; + self.views.push(View::new(doc, size)?); + self.focus = pos; Ok(()) } + + pub fn view(&self) -> Option<&View> { + self.views.get(self.focus) + } + + pub fn view_mut(&mut self) -> Option<&mut View> { + self.views.get_mut(self.focus) + } } diff --git a/helix-view/src/keymap.rs b/helix-view/src/keymap.rs index 69e6cabb..c815911e 100644 --- a/helix-view/src/keymap.rs +++ b/helix-view/src/keymap.rs @@ -1,5 +1,6 @@ use crate::commands::{self, Command}; -use helix_core::{hashmap, state}; +use crate::document::Mode; +use helix_core::hashmap; use std::collections::HashMap; // Kakoune-inspired: @@ -81,14 +82,17 @@ use std::collections::HashMap; // = = align? // + = // } +// +// gd = goto definition +// gr = goto reference // } #[cfg(feature = "term")] pub use crossterm::event::{KeyCode, KeyEvent as Key, KeyModifiers as Modifiers}; // TODO: could be trie based -type Keymap = HashMap, Command>; -type Keymaps = HashMap; +pub type Keymap = HashMap, Command>; +pub type Keymaps = HashMap; macro_rules! key { ($ch:expr) => { @@ -128,7 +132,7 @@ macro_rules! ctrl { pub fn default() -> Keymaps { hashmap!( - state::Mode::Normal => + Mode::Normal => // as long as you cast the first item, rust is able to infer the other cases hashmap!( vec![key!('h')] => commands::move_char_left as Command, @@ -179,7 +183,7 @@ pub fn default() -> Keymaps { vec![ctrl!('u')] => commands::half_page_up, vec![ctrl!('d')] => commands::half_page_down, ), - state::Mode::Insert => hashmap!( + Mode::Insert => hashmap!( vec![Key { code: KeyCode::Esc, modifiers: Modifiers::NONE @@ -201,7 +205,7 @@ pub fn default() -> Keymaps { modifiers: Modifiers::NONE }] => commands::insert::insert_tab, ), - state::Mode::Goto => hashmap!( + Mode::Goto => hashmap!( vec![Key { code: KeyCode::Esc, modifiers: Modifiers::NONE diff --git a/helix-view/src/lib.rs b/helix-view/src/lib.rs index 8ea634af..3b923744 100644 --- a/helix-view/src/lib.rs +++ b/helix-view/src/lib.rs @@ -1,9 +1,12 @@ pub mod commands; +pub mod document; pub mod editor; pub mod keymap; pub mod prompt; pub mod theme; pub mod view; +pub use document::Document; pub use editor::Editor; +pub use theme::Theme; pub use view::View; diff --git a/helix-view/src/theme.rs b/helix-view/src/theme.rs index 4cc399ed..809ec05d 100644 --- a/helix-view/src/theme.rs +++ b/helix-view/src/theme.rs @@ -157,6 +157,8 @@ impl Default for Theme { "ui.background" => Style::default().bg(Color::Rgb(59, 34, 76)), // midnight "ui.linenr" => Style::default().fg(Color::Rgb(90, 89, 119)), // comet "ui.statusline" => Style::default().bg(Color::Rgb(40, 23, 51)), // revolver + + "warning" => Style::default().fg(Color::Rgb(255, 205, 28)), }; let scopes = mapping.keys().map(ToString::to_string).collect(); diff --git a/helix-view/src/view.rs b/helix-view/src/view.rs index 2b68dbc3..df41e3ae 100644 --- a/helix-view/src/view.rs +++ b/helix-view/src/view.rs @@ -1,44 +1,39 @@ use anyhow::Error; -use std::{borrow::Cow, path::PathBuf}; +use std::borrow::Cow; -use crate::theme::Theme; +use crate::Document; use helix_core::{ graphemes::{grapheme_width, RopeGraphemes}, indent::TAB_WIDTH, - History, Position, RopeSlice, State, + Position, RopeSlice, }; use tui::layout::Rect; pub const PADDING: usize = 5; +// TODO: view should be View { doc: Document(state, history,..) } +// since we can have multiple views into the same file pub struct View { - pub state: State, - pub history: History, + pub doc: Document, pub first_line: usize, pub size: (u16, u16), - pub theme: Theme, // TODO: share one instance } impl View { - pub fn open(path: PathBuf, size: (u16, u16)) -> Result { - let theme = Theme::default(); - let state = State::load(path, theme.scopes())?; - + pub fn new(doc: Document, size: (u16, u16)) -> Result { let view = Self { - state, + doc, first_line: 0, size, - theme, - history: History::default(), }; Ok(view) } pub fn ensure_cursor_in_view(&mut self) { - let cursor = self.state.selection().cursor(); - let line = self.state.doc().char_to_line(cursor); + let cursor = self.doc.state.selection().cursor(); + let line = self.doc.text().char_to_line(cursor); let document_end = self.first_line + (self.size.1 as usize).saturating_sub(2); // TODO: side scroll @@ -58,7 +53,7 @@ impl View { let viewport = Rect::new(6, 0, self.size.0, self.size.1 - 2); // - 2 for statusline and prompt std::cmp::min( self.first_line + (viewport.height as usize), - self.state.doc().len_lines() - 1, + self.doc.text().len_lines() - 1, ) } @@ -90,4 +85,25 @@ impl View { Some(Position::new(row, col)) } + + // pub fn traverse(&self, text: &RopeSlice, start: usize, end: usize, fun: F) + // where + // F: Fn(usize, usize), + // { + // let start = self.screen_coords_at_pos(text, start); + // let end = self.screen_coords_at_pos(text, end); + + // match (start, end) { + // // fully on screen + // (Some(start), Some(end)) => { + // // we want to calculate ends of lines for each char.. + // } + // // from start to end of screen + // (Some(start), None) => {} + // // from start of screen to end + // (None, Some(end)) => {} + // // not on screen + // (None, None) => return, + // } + // } }