Add pest support (helix-editor#10616)

Support [pest-parser](https://github.com/pest-parser)

- [pest-language-server](https://github.com/pest-parser/pest-ide-tools)
- [tree-sitter-pest](https://github.com/pest-parser/tree-sitter-pest)

close helix-editor#7878

book/src/generated/lang-support.md

@@ -141,6 +141,7 @@
 | passwd | ✓ | | | |
 | pem | ✓ | | | |
 | perl | ✓ | ✓ | ✓ | `perlnavigator` |
+| pest | ✓ | ✓ | ✓ | `pest-language-server` |
 | php | ✓ | ✓ | ✓ | `intelephense` |
 | php-only | ✓ | | | |
 | pkgbuild | ✓ | ✓ | ✓ | `pkgbuild-language-server`, `bash-language-server` |

languages.toml

@@ -67,6 +67,7 @@ openscad-lsp = { command = "openscad-lsp", args = ["--stdio"] }
 pasls = { command = "pasls", args = [] }
 pbkit = { command = "pb", args = [ "lsp" ] }
 perlnavigator = { command = "perlnavigator", args= ["--stdio"] }
+pest-language-server = { command = "pest-language-server" }
 prisma-language-server = { command = "prisma-language-server", args = ["--stdio"] }
 purescript-language-server = { command = "purescript-language-server", args = ["--stdio"] }
 pylsp = { command = "pylsp" }
@@ -3558,3 +3559,23 @@ language-servers = []
 [[grammar]]
 name = "move"
 source = { git = "https://github.com/tzakian/tree-sitter-move", rev = "8bc0d1692caa8763fef54d48068238d9bf3c0264" }
+
+[[language]]
+name = "pest"
+scope = "source.pest"
+injection-regex = "pest"
+file-types = ["pest"]
+comment-tokens = ["//", "///", "//!"]
+block-comment-tokens = { start = "/*", end = "*/" }
+indent = { tab-width = 4, unit = " " }
+language-servers = ["pest-language-server"]
+
+[language.auto-pairs]
+'(' = ')'
+'{' = '}'
+'[' = ']'
+'"' = '"'
+
+[[grammar]]
+name = "pest"
+source = { git = "https://github.com/pest-parser/tree-sitter-pest", rev = "a8a98a824452b1ec4da7f508386a187a2f234b85" }

runtime/queries/pest/highlights.scm

@@ -0,0 +1,49 @@
+(line_comment) @comment
+(block_comment) @comment
+
+[
+ "("
+ ")"
+ "["
+ "]"
+ "{"
+ "}"
+] @punctuation.bracket
+
+((identifier) @variable)
+((builtin) @type.builtin)
+((const) @constant)
+
+[
+ (string)
+ (character)
+] @string
+
+[
+ "_"
+ "@"
+ "$"
+]@keyword.storage.modifier
+
+[
+ "~"
+ "|"
+ "="
+ "+"
+ "*"
+ "&"
+ "^"
+ "!"
+ "?"
+ ".."
+] @operator
+
+[
+ "PUSH"
+ "PEEK"
+ "POP"
+ "SOI"
+ "EOI"
+ "ANY"
+] @keyword
+

runtime/queries/pest/indents.scm

@@ -0,0 +1,9 @@
+[
+ (expression)
+] @indent
+
+[
+ "]"
+ "}"
+ ")"
+] @outdent

runtime/queries/pest/injections.scm

@@ -0,0 +1,7 @@
+((line_comment) @injection.content
+ (#set! injection.language "comment")
+ (#set! injection.include-children))
+
+((block_comment) @injection.content
+ (#set! injection.language "comment")
+ (#set! injection.include-children))

runtime/queries/pest/textobjects.scm

@@ -0,0 +1,8 @@
+(grammar_rule (_) @class.inside) @class.around
+(term (_) @entry.inside) @entry.around
+
+(line_comment) @comment.inside
+(line_comment)+ @comment.around
+
+(block_comment) @comment.inside
+(block_comment)+ @comment.around