Commit
+19 -25 +/-1 browse
| 1 | diff --git a/grammar.js b/grammar.js |
| 2 | index 3979ce3..20d076d 100644 |
| 3 | --- a/grammar.js |
| 4 | +++ b/grammar.js |
| 5 | @@ -2,17 +2,6 @@ const NEWLINE = /\r?\n/; |
| 6 | const WHITE_SPACE = /[\t\f\v ]+/; |
| 7 | const ANYTHING = /[^\r\n]+/; |
| 8 | |
| 9 | - const COMMAND_PRELUDE = token.immediate("diff"); |
| 10 | - const FILE_CHANGE_PRELUDE = token.immediate( |
| 11 | - field("kind", choice("new", "deleted", "rename")) |
| 12 | - ); |
| 13 | - const INDEX_PRELUDE = token.immediate("index"); |
| 14 | - const SIMILARITY_PRELUDE = token.immediate("similarity"); |
| 15 | - const FILE_PRELUDE = token.immediate(field("kind", choice("---", "+++"))); |
| 16 | - const LOCATION_PRELUDE = token.immediate("@@"); |
| 17 | - const ADDITION_PRELUDE = token.immediate("+"); |
| 18 | - const DELETION_PRELUDE = token.immediate("-"); |
| 19 | - |
| 20 | module.exports = grammar({ |
| 21 | name: "gitdiff", |
| 22 | |
| 23 | @@ -34,34 +23,39 @@ module.exports = grammar({ |
| 24 | $.context |
| 25 | ), |
| 26 | |
| 27 | - command: ($) => seq(COMMAND_PRELUDE, "--git", $.filename), |
| 28 | + command: ($) => iseq("diff", "--git", $.filename), |
| 29 | |
| 30 | file_change: ($) => |
| 31 | - choice( |
| 32 | - seq(FILE_CHANGE_PRELUDE, "file", "mode", $.mode), |
| 33 | - seq(FILE_CHANGE_PRELUDE, choice("from", "to"), $.filename) |
| 34 | + iseq( |
| 35 | + field("kind", choice("new", "deleted", "rename")), |
| 36 | + choice( |
| 37 | + seq("file", "mode", $.mode), |
| 38 | + seq(choice("from", "to"), $.filename) |
| 39 | + ) |
| 40 | ), |
| 41 | |
| 42 | - index: ($) => |
| 43 | - seq(INDEX_PRELUDE, $.commit, "..", $.commit, optional($.mode)), |
| 44 | |
| 45 | - similarity: ($) => |
| 46 | - seq(SIMILARITY_PRELUDE, "index", field("score", /\d+/), "%"), |
| 47 | + index: ($) => iseq("index", $.commit, "..", $.commit, optional($.mode)), |
| 48 | |
| 49 | - file: ($) => seq(FILE_PRELUDE, $.filename), |
| 50 | + similarity: ($) => iseq("similarity", "index", field("score", /\d+/), "%"), |
| 51 | |
| 52 | - location: ($) => |
| 53 | - seq(LOCATION_PRELUDE, $.linerange, $.linerange, "@@", ANYTHING), |
| 54 | + file: ($) => iseq(field("kind", choice("---", "+++")), $.filename), |
| 55 | |
| 56 | - addition: ($) => seq(ADDITION_PRELUDE, optional(ANYTHING)), |
| 57 | + location: ($) => iseq("@@", $.linerange, $.linerange, "@@", ANYTHING), |
| 58 | |
| 59 | - deletion: ($) => seq(DELETION_PRELUDE, optional(ANYTHING)), |
| 60 | + addition: ($) => iseq("+", optional(ANYTHING)), |
| 61 | + |
| 62 | + deletion: ($) => iseq("-", optional(ANYTHING)), |
| 63 | |
| 64 | context: ($) => token(prec(-1, ANYTHING)), |
| 65 | |
| 66 | linerange: ($) => /[-\+]\d+,\d+/, |
| 67 | - filename: ($) => ANYTHING, |
| 68 | + filename: ($) => repeat1(/\S+/), |
| 69 | commit: ($) => /[a-f0-9]{7,40}/, |
| 70 | mode: ($) => /\d+/, |
| 71 | }, |
| 72 | }); |
| 73 | + |
| 74 | + function iseq(start_token, ...tokens) { |
| 75 | + return seq(token.immediate(start_token), ...tokens); |
| 76 | + } |