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feat: Improved syntax highlighting for Gleam (#13807)
Nik Revenco 8 months ago
parent c966421 · commit 40a3fb9
-rw-r--r--book/src/themes.md1
-rw-r--r--languages.toml4
-rw-r--r--runtime/queries/gleam/highlights.scm89
-rw-r--r--runtime/queries/gleam/injections.scm4
4 files changed, 82 insertions, 16 deletions
diff --git a/book/src/themes.md b/book/src/themes.md
index 46d0a2d3..3ef064d6 100644
--- a/book/src/themes.md
+++ b/book/src/themes.md
@@ -174,6 +174,7 @@ We use a similar set of scopes as
- `documentation` - Line documentation comments (e.g. `///` in Rust)
- `block` - Block comments (e.g. (`/* */`)
- `documentation` - Block documentation comments (e.g. `/** */` in Rust)
+ - `unused` - Unused variables and patterns, e.g. `_` and `_foo`
- `variable` - Variables
- `builtin` - Reserved language variables (`self`, `this`, `super`, etc.)
diff --git a/languages.toml b/languages.toml
index 6ea02d55..78c5561f 100644
--- a/languages.toml
+++ b/languages.toml
@@ -2080,14 +2080,14 @@ scope = "source.gleam"
injection-regex = "gleam"
file-types = ["gleam"]
roots = ["gleam.toml"]
-comment-token = "//"
+comment-tokens = ["//", "///", "////"]
indent = { tab-width = 2, unit = " " }
language-servers = [ "gleam" ]
auto-format = true
[[grammar]]
name = "gleam"
-source = { git = "https://github.com/gleam-lang/tree-sitter-gleam", rev = "6ece453acf8b14568c10f629f8cd25d3dde3794f" }
+source = { git = "https://github.com/gleam-lang/tree-sitter-gleam", rev = "ee93c639dc82148d716919df336ad612fd33538e" }
[[language]]
name = "quarto"
diff --git a/runtime/queries/gleam/highlights.scm b/runtime/queries/gleam/highlights.scm
index 961afc34..cc2c93e7 100644
--- a/runtime/queries/gleam/highlights.scm
+++ b/runtime/queries/gleam/highlights.scm
@@ -1,11 +1,12 @@
; Variables
(identifier) @variable
-(discard) @comment.unused
+(discard) @comment.unused ; `_` pattern
+(hole) @comment.unused ; `_`, `_foo` unused variable
; Comments
-(module_comment) @comment
-(statement_comment) @comment
-(comment) @comment
+(module_comment) @comment.line.documentation
+(statement_comment) @comment.line.documentation
+(comment) @comment.line
; Constants
(constant
@@ -23,7 +24,10 @@
field: (label) @function)
(#is-not? local))
+; =========
; Functions
+; =========
+
(unqualified_import (identifier) @function)
(unqualified_import "type" (type_identifier) @type)
(unqualified_import (type_identifier) @constructor)
@@ -41,6 +45,10 @@
right: (identifier) @function)
(#is-not? local))
+; =========
+; Misc
+; =========
+
; "Properties"
; Assumed to be intended to refer to a name for a field; something that comes
; before ":" or after "."
@@ -56,27 +64,55 @@
(attribute_value (identifier) @constant)
+; =========
+; Types
+; =========
+
+(type_hole) @comment.unused
+
; Type names
(remote_type_identifier) @type
(type_identifier) @type
+; Generic types
+[
+ ; in `pub type Dict(key, value)` this is `key` and `value`
+ (type_parameter)
+ ; in `pub fn size(dict: Dict(key, value)) -> Int` this is `key` and `value`
+ (type_var)
+] @type
+
; Data constructors
(constructor_name) @constructor
+; built-ins
+((constructor_name) @constant.builtin
+ (#any-of? @constant.builtin "False" "True"))
+((constructor_name) @constant.builtin
+ (#any-of? @constant.builtin "Nil"))
+((constructor_name) @type.enum.variant.builtin
+ (#any-of? @type.enum.variant.builtin "Ok" "Error" "Some" "None"))
+
+; =========
; Literals
+; =========
+
(string) @string
+(escape_sequence) @constant.character.escape
((escape_sequence) @warning
(#eq? @warning "\\e")) ; deprecated escape sequence
-(escape_sequence) @constant.character.escape
(bit_string_segment_option) @function.builtin
(integer) @constant.numeric.integer
(float) @constant.numeric.float
; Reserved identifiers
((identifier) @error
- (#any-of? @error "auto" "delegate" "derive" "else" "implement" "macro" "test" "echo"))
+ (#any-of? @error "auto" "delegate" "derive" "else" "implement" "macro" "test"))
+; =========
; Keywords
+; =========
+
[
(visibility_modifier) ; "pub"
(opacity_modifier) ; "opaque"
@@ -94,15 +130,32 @@
"todo"
"type"
"use"
+ "echo"
] @keyword
+; =========
; Operators
+; =========
+
(binary_expression
operator: _ @operator)
(boolean_negation "!" @operator)
(integer_negation "-" @operator)
+[
+ "->"
+ "-"
+ "="
+ ".."
+ "<-"
+ ; OR clause in patterns
+ "|"
+] @operator
+
+; ==========
; Punctuation
+; ==========
+
[
"("
")"
@@ -113,15 +166,23 @@
"<<"
">>"
] @punctuation.bracket
+
+(tuple_type "#" @punctuation.bracket)
+(tuple "#" @punctuation.bracket)
+(tuple_pattern "#" @punctuation.bracket)
+
[
- "."
","
- ;; Controversial -- maybe some are operators?
":"
- "#"
- "="
- "->"
- ".."
- "-"
- "<-"
] @punctuation.delimiter
+
+; the `/` in `import gleam/list`
+(import (module "/" @punctuation.delimiter))
+
+[
+ "."
+] @punctuation
+
+; affects e.g. `replace` in `string.replace("+", "-")`
+; without this, it would be highlighted as a field instead of function
+(function_call (field_access (label) @function))
diff --git a/runtime/queries/gleam/injections.scm b/runtime/queries/gleam/injections.scm
index ac82a3e5..22039b62 100644
--- a/runtime/queries/gleam/injections.scm
+++ b/runtime/queries/gleam/injections.scm
@@ -1,3 +1,7 @@
((comment) @injection.content
(#set! injection.language "comment"))
+; Inject markdown into documentation comments
+((doc_comment_content) @injection.content
+ (#set! injection.language "markdown")
+ (#set! injection.combined))