feat(snl): add parser and queries

7 files changed, 520 insertions, 0 deletions

diff --git a/SUPPORTED_LANGUAGES.md b/SUPPORTED_LANGUAGES.md
index 61371d0e0..2cc4bd6a9 100644
--- a/SUPPORTED_LANGUAGES.md
+++ b/SUPPORTED_LANGUAGES.md
@@ -265,6 +265,7 @@ jsx (queries only)[^jsx] | unstable | `HFIJ ` |   | @steelsojka
 [smali](https://github.com/tree-sitter-grammars/tree-sitter-smali) | unstable | `HFIJL` |   | @amaanq
 [smithy](https://github.com/indoorvivants/tree-sitter-smithy) | unstable | `H  J ` |   | @amaanq, @keynmol
 [snakemake](https://github.com/osthomas/tree-sitter-snakemake) | unstable | `HFIJL` |   | @osthomas
+[snl](https://github.com/minijackson/tree-sitter-snl)[^snl] | unstable | `HFIJL` |   | @minijackson
 [solidity](https://github.com/JoranHonig/tree-sitter-solidity) | unstable | `HF J ` |   | @amaanq
 [soql](https://github.com/aheber/tree-sitter-sfapex) | unstable | `H    ` |   | @aheber, @xixiafinland
 [sosl](https://github.com/aheber/tree-sitter-sfapex) | unstable | `H    ` |   | @aheber, @xixiafinland
@@ -359,4 +360,5 @@ jsx (queries only)[^jsx] | unstable | `HFIJ ` |   | @steelsojka
 [^query]: Tree-sitter query language
 [^sflog]: Salesforce debug log
 [^slang]: Shader Slang
+[^snl]: EPICS Sequencer's SNL files
 <!--parserinfo-->
diff --git a/lua/nvim-treesitter/parsers.lua b/lua/nvim-treesitter/parsers.lua
index 0ddc29cd4..6a64739fa 100644
--- a/lua/nvim-treesitter/parsers.lua
+++ b/lua/nvim-treesitter/parsers.lua
@@ -2081,6 +2081,15 @@ return {
     maintainers = { '@osthomas' },
     tier = 2,
   },
+  snl = {
+    install_info = {
+      url = 'https://github.com/minijackson/tree-sitter-snl',
+      revision = '846e2d6809ac5863a15b5494f20fd267c21221c8',
+    },
+    maintainers = { '@minijackson' },
+    readme_note = "EPICS Sequencer's SNL files",
+    tier = 2,
+  },
   solidity = {
     install_info = {
       revision = '4e938a46c7030dd001bc99e1ac0f0c750ac98254',
diff --git a/runtime/queries/snl/folds.scm b/runtime/queries/snl/folds.scm
new file mode 100644
index 000000000..65e50c62f
--- /dev/null
+++ b/runtime/queries/snl/folds.scm
@@ -0,0 +1,21 @@
+[
+  (for_statement)
+  (if_statement)
+  (while_statement)
+  (funcdef)
+  (structdef)
+  (comment)
+  (preproc_if)
+  (preproc_elif)
+  (preproc_else)
+  (preproc_ifdef)
+  (preproc_function_def)
+  (init_expr)
+  (entry)
+  (state_set)
+  (state)
+  (exit)
+] @fold
+
+(initial_defn
+  (preproc_include))+ @fold
diff --git a/runtime/queries/snl/highlights.scm b/runtime/queries/snl/highlights.scm
new file mode 100644
index 000000000..423a7deb7
--- /dev/null
+++ b/runtime/queries/snl/highlights.scm
@@ -0,0 +1,245 @@
+(identifier) @variable
+
+[
+  "enum"
+  "struct"
+  "union"
+] @keyword.type
+
+[
+  "assign"
+  "const"
+  "entry"
+  "exit"
+  "foreign"
+  "monitor"
+  "option"
+  "program"
+  "ss"
+  "state"
+  "sync"
+  "syncq"
+  "to"
+  "typename"
+] @keyword
+
+"sizeof" @keyword.operator
+
+"return" @keyword.return
+
+[
+  "while"
+  "for"
+  "continue"
+  "break"
+] @keyword.repeat
+
+[
+  "if"
+  "else"
+  "when"
+] @keyword.conditional
+
+[
+  "#elif"
+  "#else"
+  "#endif"
+  "#if"
+  "#ifdef"
+  "#ifndef"
+  (preproc_directive)
+  (line_marker)
+] @keyword.directive
+
+"#define" @keyword.directive.define
+
+"#include" @keyword.import
+
+[
+  "("
+  ")"
+  "["
+  "]"
+  "{"
+  "}"
+] @punctuation.bracket
+
+[
+  "."
+  ","
+  ";"
+] @punctuation.delimiter
+
+[
+  "%%"
+  "%{"
+  "}%"
+  "..."
+] @punctuation.special
+
+[
+  "+"
+  "-"
+  "*"
+  "&"
+  "!"
+  "~"
+  "++"
+  "--"
+  "="
+  ">>"
+  "<<"
+  "/"
+  ">"
+  ">="
+  "<"
+  "<="
+  "=="
+  "!="
+  "^"
+  "|"
+  "||"
+  "&&"
+  "%"
+  "*="
+  "/="
+  "%="
+  "+="
+  "-="
+  "<<="
+  ">>="
+  "&="
+  "^="
+  "|="
+] @operator
+
+(comma_expr
+  "," @operator)
+
+[
+  (true)
+  (false)
+] @boolean
+
+(conditional_expression
+  [
+    "?"
+    ":"
+  ] @keyword.conditional.ternary)
+
+[
+  (string_literal)
+  (system_lib_string)
+] @string
+
+(parameter_expansion
+  [
+    "{"
+    "}"
+  ] @string.special)
+
+(parameter_expansion
+  (identifier) @constant)
+
+(escape_sequence) @string.escape
+
+(null) @constant.builtin
+
+[
+  (number_literal)
+  (char_literal)
+] @number
+
+((preproc_arg) @function.macro
+  (#set! "priority" 90))
+
+(preproc_defined) @function.macro
+
+(call_expression
+  function: (identifier) @function.call)
+
+(call_expression
+  function: (field_expression
+    field: (identifier) @function.call))
+
+(function_declarator
+  declarator: (identifier) @function)
+
+(preproc_function_def
+  name: (identifier) @function.macro)
+
+(field_expression
+  field: (identifier) @property)
+
+(type_qualifier) @keyword.modifier
+
+(structdef
+  name: (identifier) @type.definition)
+
+[
+  (basetype)
+  (type_expr)
+] @type
+
+(prim_type) @type.builtin
+
+(program
+  name: (identifier) @constant)
+
+(state_set
+  name: (identifier) @function)
+
+(state
+  name: (identifier) @function)
+
+(transition
+  name: (identifier) @function)
+
+(option
+  name: (identifier) @constant)
+
+((identifier) @constant
+  (#lua-match? @constant "^[A-Z][A-Z%d_]*$"))
+
+(preproc_def
+  name: (_) @constant.macro)
+
+(preproc_call
+  directive: (preproc_directive) @_u
+  argument: (_) @constant.macro
+  (#eq? @_u "#undef"))
+
+(comment) @comment @spell
+
+(param_decl
+  (declarator
+    (identifier) @variable.parameter))
+
+((identifier) @variable.parameter
+  (#has-ancestor? @variable.parameter param_decl))
+
+(param_decl
+  (declarator
+    (pointer_declarator) @variable.parameter))
+
+(preproc_params
+  (identifier) @variable.parameter)
+
+((call_expression
+  function: (_) @function.builtin)
+  (#any-of? @function.builtin
+    "delay" "pvPut" "pvPutComplete" "pvArrayPutComplete" "pvPutCancel" "pvArrayPutCancel" "pvGet"
+    "pvGetComplete" "pvArrayGetComplete" "pvGetCancel" "pvArrayGetCancel" "pvGetQ" "pvFreeQ"
+    "pvFlushQ" "pvAssign" "pvAssignSubst" "pvMonitor" "pvArrayMonitor" "pvStopMonitor"
+    "pvArrayStopMonitor" "pvSync" "pvArraySync" "pvCount" "pvStatus" "pvSeverity" "pvMessage"
+    "pvTimeStamp" "pvAssigned" "pvConnected" "pvArrayConnected" "pvIndex" "pvFlush" "pvChannelCount"
+    "pvAssignCount" "pvConnectCount" "efSet" "efClear" "efTest" "efTestAndClear" "macValueGet"
+    "optGet"))
+
+((identifier) @constant.builtin
+  (#any-of? @constant.builtin
+    "pvStatOK" "pvStatERROR" "pvStatDISCONN" "pvStatREAD" "pvStatWRITE" "pvStatHIHI" "pvStatHIGH"
+    "pvStatLOLO" "pvStatLOW" "pvStatSTATE" "pvStatCOS" "pvStatCOMM" "pvStatTIMEOUT" "pvStatHW_LIMIT"
+    "pvStatCALC" "pvStatSCAN" "pvStatLINK" "pvStatSOFT" "pvStatBAD_SUB" "pvStatUDF" "pvStatDISABLE"
+    "pvStatSIMM" "pvStatREAD_ACCESS" "pvStatWRITE_ACCESS" "pvSevrOK" "pvSevrERROR" "pvSevrNONE"
+    "pvSevrMINOR" "pvSevrMAJOR" "pvSevrINVALID" "DEFAULT" "ASYNC" "SYNC" "NOEVFLAG"))
diff --git a/runtime/queries/snl/indents.scm b/runtime/queries/snl/indents.scm
new file mode 100644
index 000000000..0d6523615
--- /dev/null
+++ b/runtime/queries/snl/indents.scm
@@ -0,0 +1,61 @@
+[
+  (field_declaration_list)
+  (state_set)
+  (state)
+  (block)
+  (member_decl)
+] @indent.begin
+
+(block
+  "}" @indent.end)
+
+[
+  "else"
+  "}"
+] @indent.branch
+
+(call_expression) @indent.begin
+
+(call_expression
+  ")" @indent.end)
+
+(if_statement
+  condition: (_) @indent.begin)
+
+(if_statement
+  consequence: (_) @_consequence
+  (#not-kind-eq? @_consequence block)) @indent.begin
+
+(else_statement
+  consequence: (_) @_consequence
+  (#not-kind-eq? @_consequence block)) @indent.begin
+
+(while_statement
+  body: (statement
+    (_) @_body)
+  (#not-kind-eq? @_body block)) @indent.begin
+
+(for_statement
+  body: (statement
+    (_) @_body)
+  (#not-kind-eq? @_body block)) @indent.begin
+
+(init_declarator) @indent.begin
+
+(transition
+  condition: (_) @indent.begin)
+
+[
+  "#define"
+  "#ifdef"
+  "#if"
+  "#else"
+  "#endif"
+] @indent.zero
+
+[
+  (preproc_arg)
+  (string_literal)
+] @indent.ignore
+
+(comment) @indent.auto
diff --git a/runtime/queries/snl/injections.scm b/runtime/queries/snl/injections.scm
new file mode 100644
index 000000000..b595d8033
--- /dev/null
+++ b/runtime/queries/snl/injections.scm
@@ -0,0 +1,117 @@
+((comment) @injection.content
+  (#set! injection.language "comment"))
+
+((c_code) @injection.content
+  (#set! injection.language "c"))
+
+((preproc_arg) @injection.content
+  (#set! injection.self))
+
+((call_expression
+  function: (identifier) @_function
+  (args
+    .
+    [
+      (string_literal
+        (string_content) @injection.content)
+      (concatenated_string
+        (string_literal
+          (string_content) @injection.content))
+    ]))
+  ; format-ignore
+  (#any-of? @_function 
+    "printf" "printf_s"
+    "vprintf" "vprintf_s"
+    "scanf" "scanf_s"
+    "vscanf" "vscanf_s"
+    "wprintf" "wprintf_s"
+    "vwprintf" "vwprintf_s"
+    "wscanf" "wscanf_s"
+    "vwscanf" "vwscanf_s"
+    "cscanf" "_cscanf"
+    "printw"
+    "scanw")
+  (#set! injection.language "printf"))
+
+((call_expression
+  function: (identifier) @_function
+  (args
+    (_)
+    .
+    [
+      (string_literal
+        (string_content) @injection.content)
+      (concatenated_string
+        (string_literal
+          (string_content) @injection.content))
+    ]))
+  ; format-ignore
+  (#any-of? @_function 
+    "fprintf" "fprintf_s"
+    "sprintf"
+    "dprintf"
+    "fscanf" "fscanf_s"
+    "sscanf" "sscanf_s"
+    "vsscanf" "vsscanf_s"
+    "vfprintf" "vfprintf_s"
+    "vsprintf"
+    "vdprintf"
+    "fwprintf" "fwprintf_s"
+    "vfwprintf" "vfwprintf_s"
+    "fwscanf" "fwscanf_s"
+    "swscanf" "swscanf_s"
+    "vswscanf" "vswscanf_s"
+    "vfscanf" "vfscanf_s"
+    "vfwscanf" "vfwscanf_s"
+    "wprintw"
+    "vw_printw" "vwprintw"
+    "wscanw"
+    "vw_scanw" "vwscanw")
+  (#set! injection.language "printf"))
+
+((call_expression
+  function: (identifier) @_function
+  (args
+    (_)
+    .
+    (_)
+    .
+    [
+      (string_literal
+        (string_content) @injection.content)
+      (concatenated_string
+        (string_literal
+          (string_content) @injection.content))
+    ]))
+  ; format-ignore
+  (#any-of? @_function 
+    "sprintf_s"
+    "snprintf" "snprintf_s"
+    "vsprintf_s"
+    "vsnprintf" "vsnprintf_s"
+    "swprintf" "swprintf_s"
+    "snwprintf_s"
+    "vswprintf" "vswprintf_s"
+    "vsnwprintf_s"
+    "mvprintw"
+    "mvscanw")
+  (#set! injection.language "printf"))
+
+((call_expression
+  function: (identifier) @_function
+  (args
+    (_)
+    .
+    (_)
+    .
+    (_)
+    .
+    [
+      (string_literal
+        (string_content) @injection.content)
+      (concatenated_string
+        (string_literal
+          (string_content) @injection.content))
+    ]))
+  (#any-of? @_function "mvwprintw" "mvwscanw")
+  (#set! injection.language "printf"))
diff --git a/runtime/queries/snl/locals.scm b/runtime/queries/snl/locals.scm
new file mode 100644
index 000000000..35c8da5c9
--- /dev/null
+++ b/runtime/queries/snl/locals.scm
@@ -0,0 +1,65 @@
+; Functions definitions
+(function_declarator
+  declarator: (identifier) @local.definition.function)
+
+(preproc_function_def
+  name: (identifier) @local.definition.macro) @local.scope
+
+(preproc_def
+  name: (identifier) @local.definition.macro)
+
+((identifier) @local.definition.parameter
+  (#has-ancestor? @local.definition.parameter param_decl))
+
+(init_declarator
+  (declarator
+    (identifier)) @local.definition.var)
+
+(array_declarator
+  (identifier) @local.definition.var)
+
+; Struct
+(member_decl
+  (declarator
+    (identifier)) @local.definition.field)
+
+(structdef
+  name: (identifier) @local.definition.type)
+
+; References
+((field_expression
+  field: (identifier) @local.reference)
+  (#set! reference.kind "field"))
+
+((call_expression
+  function: (identifier) @local.reference)
+  (#set! reference.kind "call"))
+
+((basetype
+  (identifier) @local.reference)
+  (#set! reference.kind "type"))
+
+; SNL specific
+(state_set
+  name: (identifier) @local.definition)
+
+(state
+  name: (identifier) @local.definition)
+
+(state_statement
+  name: (identifier) @local.reference)
+
+(transition
+  name: (identifier) @local.reference)
+
+(identifier) @local.reference
+
+[
+  (for_statement)
+  (if_statement)
+  (while_statement)
+  (source_file)
+  (block)
+  (state_set)
+  (state_block)
+] @local.scope