Add filetype for terraform files with syntax hl

rc/filetype/terraform.kak

@@ -0,0 +1,120 @@
+# Terraform configuration language
+# https://www.terraform.io/docs/configuration/
+
+# Detection
+# ‾‾‾‾‾‾‾‾‾
+
+hook global BufCreate .*[.](tf|tfvars) %{
+  set-option buffer filetype terraform
+}
+
+
+# Initialization
+# ‾‾‾‾‾‾‾‾‾‾‾‾‾‾
+
+hook global WinSetOption filetype=terraform %{
+    require-module terraform
+
+    set-option window static_words %opt{terraform_static_words}
+
+    hook -once -always window WinSetOption filetype=.* %{ remove-hooks window terraform-.+ }
+}
+
+
+hook -group terraform-highlight global WinSetOption filetype=terraform %{
+    add-highlighter window/terraform ref terraform
+    hook -once -always window WinSetOption filetype=.* %{ remove-highlighter window/terraform }
+}
+
+
+provide-module terraform %§
+
+# Highlighters
+# ‾‾‾‾‾‾‾‾‾‾‾‾
+
+add-highlighter shared/terraform regions
+add-highlighter shared/terraform/code  default-region group
+
+add-highlighter shared/terraform/comment1 region '#'    '$'  fill comment
+add-highlighter shared/terraform/comment2 region '\\'   '$'  fill comment
+add-highlighter shared/terraform/comment3 region /\*    \*/  fill comment
+
+# Strings can contain interpolated terraform expressions, which can contain
+# strings. Currently, we cannot support nesting of the same type of delimiter,
+# so instead we render the full interpolation as a value (otherwise, it
+# looks bad).
+# See https://github.com/mawww/kakoune/issues/1670
+add-highlighter shared/terraform/string  region '"' '(?<!\\)(?:\\\\)*"'  group
+add-highlighter shared/terraform/string/fill fill string
+add-highlighter shared/terraform/string/inter regex \$\{.+?\} 0:value
+
+add-highlighter shared/terraform/heredoc region -match-capture '<<-?(\w+)' '^\h*(\w+)$' regions
+add-highlighter shared/terraform/heredoc/fill default-region fill string
+add-highlighter shared/terraform/heredoc/inter region -recurse \{ (?<!\\)(\\\\)*\$\{ \} ref terraform
+
+
+add-highlighter shared/terraform/code/valueDec regex '\b[0-9]+([kKmMgG]b?)?\b' 0:value
+add-highlighter shared/terraform/code/valueHex regex '\b0x[0-9a-f]+([kKmMgG]b?)?\b' 0:value
+
+add-highlighter shared/terraform/code/operators regex [\[\]] 0:operator
+
+add-highlighter shared/terraform/code/field regex '^\h+(\w+)\s*(=)' 1:variable 2:keyword
+
+evaluate-commands %sh{
+  blocks="connection content data dynamic locals module output provider
+          provisioner resource terraform variable"
+
+  constants="true false null"
+
+  keywords="for for_each if in"
+
+  types="bool list map number object set string tuple"
+
+  var_subs="local module var"
+
+  # Builtin functions
+  fun_num="abs ceil floor log max min parseint pow signum"
+
+  fun_str="chomp format formatlist indent join lower regex regexall replace
+           split strrev substr title trimspace upper"
+
+  fun_coll="chunklist coalesce coalescelist compact concat contains
+            distinct element flatten index keys length lookup
+            matchkeys merge range reverse setintersection setproduct
+            setunion slice sort transpose values zipmap"
+
+  fun_enc="base64decode base64encode base64gzip csvdecode jsondecode
+           jsonencode urlencode yamldecode yamlencode"
+
+  fun_file="abspath dirname pathexpand basename file fileexists fileset
+            filebase64 templatefile"
+
+  fun_dt="formatdate timeadd timestamp"
+
+  fun_crypt="base64sha256 base64sha512 bcrypt filebase64sha256
+             filebase64sha512 filemd5 filesha1 filesha256 filesha512 md5
+             rsadecrypt sha1 sha256 sha512 uuid uuidv5"
+
+  fun_net="cidrhost cidrnetmask cidrsubnet"
+
+  fun_cast="tobool tolist tomap tonumber toset tostring"
+
+  functions="$fun_num $fun_str $fun_coll $fun_enc $fun_file $fun_dt $fun_crypt $fun_net $fun_cast"
+
+  join() { sep=$2; eval set -- $1; IFS="$sep"; echo "$*"; }
+
+  # Add grammar elements to the static completion list
+  printf %s\\n "declare-option str-list terraform_static_words $(join "$blocks $keywords $constants $types $var_subs $functions" ' ')"
+
+  # Highlight grammar elements
+  printf %s "
+    add-highlighter shared/terraform/code/ regex '\b($(join "$blocks"    '|'))\b[^.]' 1:keyword
+    add-highlighter shared/terraform/code/ regex '\b($(join "$keywords"  '|'))\b'     1:keyword
+    add-highlighter shared/terraform/code/ regex '\b($(join "$constants" '|'))\b'     1:value
+    add-highlighter shared/terraform/code/ regex '\b($(join "$types"     '|'))\b'     1:type
+    add-highlighter shared/terraform/code/ regex '\b($(join "$var_subs"  '|'))\b\.'   1:meta
+    add-highlighter shared/terraform/code/ regex '\b($(join "$functions" '|'))\s*\('  1:builtin
+  "
+}
+
+§