diff options
Diffstat (limited to 'src/lsp/lsp.zig')
| -rw-r--r-- | src/lsp/lsp.zig | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/src/lsp/lsp.zig b/src/lsp/lsp.zig index 43f94f95..33e95570 100644 --- a/src/lsp/lsp.zig +++ b/src/lsp/lsp.zig @@ -31,8 +31,34 @@ pub const Req = struct { offset: u32, arg: []const u8 = "", root: []const u8 = "", + /// For `explain`: the query it narrates, read from `arg` (`<kind> + /// <arg>`) by `explaining`; a definition when none was asked before. + explains: Kind = .definition, }; +/// An `explain` request made the one it narrates: `explains` and `arg` set +/// from its `<kind> <arg>`; any other request as it is. +pub fn explaining(req: Req) Req { + if (req.kind != .explain) return req; + var r = req; + const sp = std.mem.indexOfScalar(u8, req.arg, ' ') orelse req.arg.len; + const named = std.meta.stringToEnum(Kind, req.arg[0..sp]) orelse .definition; + r.explains = if (named == .explain or named == .status) .definition else named; + r.arg = if (sp < req.arg.len) req.arg[sp + 1 ..] else ""; + return r; +} + +test "an explain request narrates the query named in its arg, a definition by default" { + const base: Req = .{ .kind = .explain, .path = "/x.zig", .source = "", .offset = 0 }; + var r = base; + r.arg = "hover "; + try std.testing.expectEqual(Kind.hover, explaining(r).explains); + r.arg = "rename newName"; + try std.testing.expectEqual(Kind.rename, explaining(r).explains); + try std.testing.expectEqualStrings("newName", explaining(r).arg); + try std.testing.expectEqual(Kind.definition, explaining(base).explains); +} + /// Every language, Zig's (zls) included, through the protocol client, which /// runs its server as a child process. None on the web or the board. const backends = if (@import("pardes_config").platform == .web or @import("pardes_config").platform == .esp32p4) |