Add TypeSpec support (#11412)

* Add TypeSpec support

Adds support for TypeSpec <https://typespec.io> in helix.

* Resolve PR comments

* Pull in LICENSE

Co-authored-by: Michael Davis <mcarsondavis@gmail.com>

---------

Co-authored-by: Michael Davis <mcarsondavis@gmail.com>

book/src/generated/lang-support.md

@@ -205,6 +205,7 @@
 | tsx | ✓ | ✓ | ✓ | `typescript-language-server` |
 | twig | ✓ |  |  |  |
 | typescript | ✓ | ✓ | ✓ | `typescript-language-server` |
+| typespec | ✓ | ✓ | ✓ | `tsp-server` |
 | typst | ✓ |  |  | `tinymist`, `typst-lsp` |
 | ungrammar | ✓ |  |  |  |
 | unison | ✓ |  | ✓ |  |

languages.toml

@@ -94,6 +94,7 @@ taplo = { command = "taplo", args = ["lsp", "stdio"] }
 templ = { command = "templ", args = ["lsp"] }
 terraform-ls = { command = "terraform-ls", args = ["serve"] }
 texlab = { command = "texlab" }
+typespec = { command = "tsp-server", args = ["--stdio"] }
 vala-language-server = { command = "vala-language-server" }
 vhdl_ls = { command = "vhdl_ls", args = [] }
 vlang-language-server = { command = "v-analyzer" }
@@ -767,6 +768,23 @@ indent = { tab-width = 2, unit = "  " }
 name = "typescript"
 source = { git = "https://github.com/tree-sitter/tree-sitter-typescript", rev = "b1bf4825d9eaa0f3bdeb1e52f099533328acfbdf", subpath = "typescript" }
 
+[[language]]
+name = "typespec"
+scope = "source.typespec"
+injection-regex = "(tsp|typespec)"
+language-id = "typespec"
+file-types = ["tsp"]
+roots = ["tspconfig.yaml"]
+auto-format = true
+comment-token = "//"
+block-comment-tokens = { start = "/*", end = "*/" }
+language-servers = ["typespec"]
+indent = { tab-width = 2, unit = "  " }
+
+[[grammar]]
+name = "typespec"
+source = { git = "https://github.com/happenslol/tree-sitter-typespec", rev = "0ee05546d73d8eb64635ed8125de6f35c77759fe" }
+
 [[language]]
 name = "tsx"
 scope = "source.tsx"

runtime/queries/typespec/highlights.scm

@@ -0,0 +1,177 @@
+; Keywords
+
+[
+  "is"
+  "extends"
+  "valueof"
+] @keyword.operator
+
+[
+  "namespace"
+  "scalar"
+  "interface"
+  "alias"
+] @keyword
+
+[
+  "model"
+  "enum"
+  "union"
+] @keyword.storage.type
+
+[
+  "op"
+  "fn"
+  "dec"
+] @keyword.function
+
+"extern" @keyword.storage.modifier
+
+[
+  "import"
+  "using"
+] @keyword.control.import
+
+[
+  "("
+  ")"
+  "{"
+  "}"
+  "<"
+  ">"
+  "["
+  "]"
+] @punctuation.bracket
+
+[
+  ","
+  ";"
+  "."
+  ":"
+] @punctuation.delimiter
+
+[
+  "|"
+  "&"
+  "="
+  "..."
+] @operator
+
+"?" @punctuation.special
+
+; Imports
+
+(import_statement
+  (quoted_string_literal) @string.special.path)
+
+; Namespaces
+
+(using_statement
+  module: (identifier_or_member_expression) @namespace)
+
+(namespace_statement
+  name: (identifier_or_member_expression) @namespace)
+
+; Comments
+
+[
+  (single_line_comment)
+] @comment.line
+
+[
+  (multi_line_comment)
+] @comment.block
+
+; Decorators
+
+(decorator
+  "@" @attribute
+  name: (identifier_or_member_expression) @attribute)
+
+(augment_decorator_statement
+  name: (identifier_or_member_expression) @attribute)
+
+(decorator
+  (decorator_arguments) @variable.parameter)
+
+; Scalars
+
+(scalar_statement
+  name: (identifier) @type)
+
+; Models
+
+(model_statement
+  name: (identifier) @type)
+
+(model_property
+  name: (identifier) @variable.other.member)
+
+; Operations
+
+(operation_statement
+  name: (identifier) @function.method)
+
+(operation_arguments
+  (model_property
+    name: (identifier) @variable.parameter))
+
+(template_parameter
+  name: (identifier) @type.parameter)
+
+(function_parameter
+  name: (identifier) @variable.parameter)
+
+; Interfaces
+
+(interface_statement
+  name: (identifier) @type)
+
+(interface_statement
+  (interface_body
+    (interface_member
+      (identifier) @function.method)))
+
+; Enums
+
+(enum_statement
+  name: (identifier) @type.enum)
+
+(enum_member
+  name: (identifier) @constant)
+
+; Unions
+
+(union_statement
+  name: (identifier) @type)
+
+(union_variant
+  name: (identifier) @type.enum.variant)
+
+; Aliases
+
+(alias_statement
+  name: (identifier) @type)
+
+; Built-in types
+
+[
+  (quoted_string_literal)
+  (triple_quoted_string_literal)
+] @string
+
+(escape_sequence) @constant.character.escape
+
+(boolean_literal) @constant.builtin.boolean
+
+[
+  (decimal_literal)
+  (hex_integer_literal)
+  (binary_integer_literal)
+] @constant.numeric.integer
+
+(builtin_type) @type.builtin
+
+; Identifiers
+
+(identifier_or_member_expression) @type

runtime/queries/typespec/indents.scm

@@ -0,0 +1,18 @@
+[
+  (model_expression)
+  (tuple_expression)
+  (namespace_body)
+  (interface_body)
+  (union_body)
+  (enum_body)
+  (template_arguments)
+  (template_parameters)
+  (operation_arguments)
+] @indent.begin
+
+[
+  "}"
+  ")"
+  ">"
+  "]"
+] @indent.end

runtime/queries/typespec/injections.scm

@@ -0,0 +1,5 @@
+([
+  (single_line_comment)
+  (multi_line_comment)
+] @injection.content
+  (#set! injection.language "comment"))

runtime/queries/typespec/textobjects.scm

@@ -0,0 +1,51 @@
+; Classes
+
+(enum_statement
+  (enum_body) @class.inside) @class.around
+
+(model_statement
+  (model_expression) @class.inside) @class.around
+
+(union_statement
+  (union_body) @class.inside) @class.around
+
+; Interfaces
+
+(interface_statement
+  (interface_body
+    (interface_member) @function.around) @class.inside) @class.around
+
+; Comments
+
+[
+  (single_line_comment)
+  (multi_line_comment)
+] @comment.inside
+
+[
+  (single_line_comment)
+  (multi_line_comment)
+]+ @comment.around
+
+; Functions
+
+[
+  (decorator)
+  (decorator_declaration_statement)
+  (function_declaration_statement)
+  (operation_statement)
+] @function.around
+
+(function_parameter_list
+  (function_parameter)? @parameter.inside)* @function.inside
+
+(decorator_arguments
+  (expression_list
+    (_) @parameter.inside)*) @function.inside
+
+(operation_arguments
+  (model_property)? @parameter.inside)* @function.inside
+
+(template_parameters
+  (template_parameter_list
+    (template_parameter) @parameter.inside)) @function.inside