Updated terraform rules for Terraform 0.12+. Based on terraform

documentation (https://www.terraform.io/docs/configuration/index.html).
Added all builtin functions and updated syntax rules.

Author: orhanhenrik

lexers/t/terraform.go

@@ -15,55 +15,47 @@ var Terraform = internal.Register(MustNewLexer(
 	},
 	Rules{
 		"root": {
-			Include("string"),
-			Include("punctuation"),
-			Include("curly"),
-			Include("basic"),
-			Include("whitespace"),
-			{`[0-9]+`, LiteralNumber, nil},
-		},
-		"basic": {
-			{Words(`\b`, `\b`, `true`, `false`), KeywordType, nil},
-			{`\s*/\*`, CommentMultiline, Push("comment")},
-			{`\s*#.*\n`, CommentSingle, nil},
-			{`(.*?)(\s*)(=)`, ByGroups(NameAttribute, Text, Operator), nil},
-			{Words(`\b`, `\b`, `variable`, `resource`, `provider`, `provisioner`, `module`), KeywordReserved, Push("function")},
-			{Words(`\b`, `\b`, `ingress`, `egress`, `listener`, `default`, `connection`, `alias`), KeywordDeclaration, nil},
-			{`\$\{`, LiteralStringInterpol, Push("var_builtin")},
-		},
-		"function": {
-			{`(\s+)(".*")(\s+)`, ByGroups(Text, LiteralString, Text), nil},
-			Include("punctuation"),
-			Include("curly"),
-		},
-		"var_builtin": {
-			{`\$\{`, LiteralStringInterpol, Push()},
-			{Words(`\b`, `\b`, `concat`, `file`, `join`, `lookup`, `element`), NameBuiltin, nil},
-			Include("string"),
-			Include("punctuation"),
-			{`\s+`, Text, nil},
-			{`\}`, LiteralStringInterpol, Pop(1)},
+			{`[\[\](),.{}]`, Punctuation, nil},
+			{`-?[0-9]+`, LiteralNumber, nil},
+			{`=>`, Punctuation, nil},
+			{Words(``, `\b`, `true`, `false`), KeywordConstant, nil},
+			{`/(?s)\*(((?!\*/).)*)\*/`, CommentMultiline, nil},
+			{`\s*(#|//).*\n`, CommentSingle, nil},
+			{`([a-zA-Z]\w*)(\s*)(=(?!>))`, ByGroups(NameAttribute, Text, Text), nil},
+			{Words(`^\s*`, `\b`, `variable`, `data`, `resource`, `provider`, `provisioner`, `module`, `output`), KeywordReserved, nil},
+			{Words(``, `\b`, `for`, `in`), Keyword, nil },
+			{Words(``, ``, `count`, `data`, `var`, `module`, `each`), NameBuiltin, nil},
+			{Words(``, `\b`, `abs`, `ceil`, `floor`, `log`, `max`, `min`, `parseint`, `pow`, `signum`, ), NameBuiltin, nil},
+			{Words(``, `\b`, `chomp`, `format`, `formatlist`, `indent`, `join`, `lower`, `regex`, `regexall`, `replace`, `split`, `strrev`, `substr`, `title`, `trim`, `trimprefix`, `trimsuffix`, `trimspace`, `upper`), NameBuiltin, nil},
+			{Words(`[^.]`, `\b`, `chunklist`,`coalesce`,`coalescelist`,`compact`,`concat`,`contains`,`distinct`,`element`,`flatten`,`index`,`keys`,`length`,`list`,`lookup`,`map`,`matchkeys`,`merge`,`range`,`reverse`,`setintersection`,`setproduct`,`setsubtract`,`setunion`,`slice`,`sort`,`transpose`,`values`,`zipmap`), NameBuiltin, nil},
+			{Words(`[^.]`, `\b`, `base64decode`,`base64encode`,`base64gzip`,`csvdecode`,`jsondecode`,`jsonencode`,`urlencode`,`yamldecode`,`yamlencode`), NameBuiltin, nil},
+			{Words(``, `\b`, `abspath`,`dirname`,`pathexpand`,`basename`,`file`,`fileexists`,`fileset`,`filebase64`,`templatefile`), NameBuiltin, nil},
+			{Words(``, `\b`, `formatdate`,`timeadd`,`timestamp`), NameBuiltin, nil},
+			{Words(``, `\b`, `base64sha256`,`base64sha512`,`bcrypt`,`filebase64sha256`,`filebase64sha512`,`filemd5`,`filesha1`,`filesha256`,`filesha512`,`md5`,`rsadecrypt`,`sha1`,`sha256`,`sha512`,`uuid`,`uuidv5`), NameBuiltin, nil},
+			{Words(``, `\b`, `cidrhost`,`cidrnetmask`,`cidrsubnet`), NameBuiltin, nil},
+			{Words(``, `\b`, `can`,`tobool`,`tolist`,`tomap`,`tonumber`,`toset`,`tostring`,`try`), NameBuiltin, nil},
+			{`=(?!>)|\+|-|\*|\/|:|!|%|>|<(?!<)|>=|<=|==|!=|&&|\||\?`, Operator, nil},
+			{`\n|\s+|\\\n`, Text, nil},
+			{`[a-zA-Z]\w*`, NameOther, nil},
+			{`"`, LiteralStringDouble, Push("string")},
+			{`(?s)(<<-?)(\w+)(\n\s*(?:(?!\2).)*\s*\n\s*)(\2)`, ByGroups(Operator, Operator, String, Operator), nil},
+		},
+		"declaration": {
+			{`(\s*)("(?:\\\\|\\"|[^"])*")(\s*)`, ByGroups(Text, NameVariable, Text), nil},
+			{`\{`, Punctuation, Pop(1)},
 		},
 		"string": {
-			{`(".*")`, ByGroups(LiteralStringDouble), nil},
-		},
-		"punctuation": {
-			{`[\[\](),.]`, Punctuation, nil},
-		},
-		"curly": {
-			{`\{`, TextPunctuation, nil},
-			{`\}`, TextPunctuation, nil},
-		},
-		"comment": {
-			{`[^*/]`, CommentMultiline, nil},
-			{`/\*`, CommentMultiline, Push()},
-			{`\*/`, CommentMultiline, Pop(1)},
-			{`[*/]`, CommentMultiline, nil},
-		},
-		"whitespace": {
-			{`\n`, Text, nil},
-			{`\s+`, Text, nil},
-			{`\\\n`, Text, nil},
+			{`"`, LiteralStringDouble, Pop(1)},
+			{`\\\\`, LiteralStringDouble, nil},
+			{`\\\\"`, LiteralStringDouble, nil},
+			{`\$\{`, LiteralStringInterpol, Push("interp-inside")},
+			{`\$`, LiteralStringDouble, nil},
+			{`[^"\\\\$]+`, LiteralStringDouble, nil},
+		},
+		"interp-inside": {
+			{`\}`, LiteralStringInterpol, Pop(1)},
+			Include("root"),
 		},
+
 	},
 ))