Add HCL lexer.

README.md

@@ -33,29 +33,30 @@ Prefix | Language
 :----: | --------
 A | ABNF, ActionScript, ActionScript 3, Ada, Angular2, ANTLR, ApacheConf, APL, AppleScript, Arduino, Awk
 B | Ballerina, Base Makefile, Bash, Batchfile, BlitzBasic, BNF, Brainfuck
-C | C, C#, C++, Cassandra CQL, CFEngine3, cfstatement/ColdFusion, CMake, COBOL, CSS, Cap'n Proto, Ceylon, ChaiScript, Cheetah, Clojure, CoffeeScript, Common Lisp, Coq, Crystal, Cython
-D | Dart, Diff, Django/Jinja, Docker, DTD
+C | C, C#, C++, Cap'n Proto, Cassandra CQL, Ceylon, CFEngine3, cfstatement, ChaiScript, Cheetah, Clojure, CMake, COBOL, CoffeeScript, Common Lisp, Coq, Crystal, CSS, Cython
+D | D, Dart, Diff, Django/Jinja, Docker, DTD
 E | EBNF, Elixir, Elm, EmacsLisp, Erlang
 F | Factor, Fish, Forth, Fortran, FSharp
-G | GAS, GDScript, GLSL, Genshi, Genshi HTML, Genshi Text, Gnuplot, Go, Go HTML Template, Go Text Template, GraphQL, Groovy
-H | Handlebars, Haskell, Haxe, Hexdump, HTML, HTTP, Hy 
+G | GAS, GDScript, Genshi, Genshi HTML, Genshi Text, GLSL, Gnuplot, Go, Go HTML Template, Go Text Template, GraphQL, Groovy
+H | Handlebars, Haskell, Haxe, HCL, Hexdump, HTML, HTTP, Hy
 I | Idris, INI, Io
-J | Java, JavaScript, JSON, Jsx, Julia, Jungle
+J | Java, JavaScript, JSON, Julia, Jungle
 K | Kotlin
 L | Lighttpd configuration file, LLVM, Lua
-M | Mako, Markdown, Mason, Mathematica, MiniZinc, Modula-2, MonkeyC, MorrowindScript, Myghty, MySQL
+M | Mako, markdown, Mason, Mathematica, Matlab, MiniZinc, Modula-2, MonkeyC, MorrowindScript, Myghty, MySQL
 N | NASM, Newspeak, Nginx configuration file, Nim, Nix
 O | Objective-C, OCaml, Octave, OpenSCAD, Org Mode
-P | PacmanConf, Perl, PHP, Pig, PkgConfig, Plaintext, PL/pgSQL, PostgreSQL SQL dialect, PostScript, POVRay, PowerShell, Prolog, Protocol Buffer, Puppet, Python, Python 3
+P | PacmanConf, Perl, PHP, Pig, PkgConfig, PL/pgSQL, plaintext, PostgreSQL SQL dialect, PostScript, POVRay, PowerShell, Prolog, Protocol Buffer, Puppet, Python, Python 3
 Q | QBasic
-R | R, Racket, Ragel, reg, reStructuredText, Rexx, Ruby, Rust
-S | Sass, Scala, Scheme, Scilab, SCSS, Smalltalk, Smarty, Snobol, Solidity, SPARQL, SQL, SquidConf, Swift, systemd, Systemverilog
-T | TASM, Tcl, Tcsh, Termcap, Terminfo, Terraform, TeX, Thrift, TOML, TradingView, Transact-SQL, Turtle, Twig, TypeScript, TypoScript, TypoScriptCssData, TypoScriptHtmlData
-V | verilog, VHDL, VimL
+R | R, Racket, Ragel, react, reg, reStructuredText, Rexx, Ruby, Rust
+S | Sass, Scala, Scheme, Scilab, SCSS, Smalltalk, Smarty, Snobol, Solidity, SPARQL, SQL, SquidConf, Swift, SYSTEMD, systemverilog
+T | TASM, Tcl, Tcsh, Termcap, Terminfo, Terraform, TeX, Thrift, TOML, TradingView, Transact-SQL, Turing, Turtle, Twig, TypeScript, TypoScript, TypoScriptCssData, TypoScriptHtmlData
+V | VB.net, verilog, VHDL, VimL, vue
 W | WDTE
 X | XML, Xorg
 Y | YAML
 
+
 _I will attempt to keep this section up to date, but an authoritative list can be
 displayed with `chroma --list`._
 

lexers/h/hcl.go

@@ -0,0 +1,69 @@
+package h
+
+import (
+	. "github.com/alecthomas/chroma" // nolint
+	"github.com/alecthomas/chroma/lexers/internal"
+)
+
+// HCL lexer.
+var HCL = internal.Register(MustNewLexer(
+	&Config{
+		Name:      "HCL",
+		Aliases:   []string{"hcl"},
+		Filenames: []string{"*.hcl"},
+		MimeTypes: []string{"application/x-hcl"},
+	},
+	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(Name, Text, Operator), nil},
+			{`\d+`, Number, nil},
+			{`\b\w+\b`, Keyword, 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)},
+		},
+		"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},
+		},
+	},
+))

table.py

@@ -0,0 +1,15 @@
+#!/usr/bin/env python3
+from collections import defaultdict
+from subprocess import check_output
+
+lines = check_output(["go", "run", "./cmd/chroma/main.go", "--list"]).decode('utf-8').splitlines()
+lines = [line.strip() for line in lines if line.startswith("  ") and not line.startswith("   ")]
+lines = sorted(lines, key=lambda l: l.lower())
+
+table = defaultdict(list)
+
+for line in lines:
+    table[line[0].upper()].append(line)
+
+for key, value in table.items():
+    print("{} | {}".format(key, ', '.join(value)))