Added support for GDScript (#2006)

This adds support for the GDScript language.

components.json

@@ -298,6 +298,10 @@
 			"title": "G-code",
 			"owner": "RunDevelopment"
 		},
+		"gdscript": {
+			"title": "GDScript",
+			"owner": "RunDevelopment"
+		},
 		"gedcom": {
 			"title": "GEDCOM",
 			"owner": "Golmote"

components/prism-gdscript.js

@@ -0,0 +1,27 @@
+Prism.languages.gdscript = {
+	'comment': /#.*/,
+	'string': {
+		pattern: /@?(?:("|')(?:(?!\1)[^\n\\]|\\[\s\S])*\1(?!"|')|"""(?:[^\\]|\\[\s\S])*?""")/,
+		greedy: true
+	},
+	'class-name': {
+		// class_name Foo, extends Bar, class InnerClass
+		// export(int) var baz, export(int, 0) var i
+		// as Node
+		// const FOO: int = 9, var bar: bool = true
+		// func add(reference: Item, amount: int) -> Item:
+		pattern: /(^(?:class_name|class|extends)[ \t]+|^export\([ \t]*|\bas[ \t]+|(?:\b(?:const|var)[ \t]|[,(])[ \t]*\w+[ \t]*:[ \t]*|->[ \t]*)[a-zA-Z_]\w*/m,
+		lookbehind: true
+	},
+	'keyword': /\b(?:and|as|assert|break|breakpoint|class|class_name|const|continue|elif|else|enum|export|extends|for|func|if|in|is|master|mastersync|match|not|null|onready|or|pass|preload|puppet|puppetsync|remote|remotesync|return|self|setget|signal|static|tool|var|while|yield)\b/,
+	'function': /[a-z_]\w*(?=[ \t]*\()/i,
+	'variable': /\$\w+/,
+	'number': [
+		/\b0b[01_]+\b|\b0x[\da-fA-F_]+\b|(?:\b\d[\d_]*(?:\.[\d_]*)?|\B\.[\d_]+)(?:e[+-]?[\d_]+)?\b/,
+		/\b(?:INF|NAN|PI|TAU)\b/
+	],
+	'constant': /\b[A-Z][A-Z_\d]*\b/,
+	'boolean': /\b(?:false|true)\b/,
+	'operator': /->|:=|&&|\|\||<<|>>|[-+*/%&|!<>=]=?|[~^]/,
+	'punctuation': /[.:,;()[\]{}]/
+};

examples/prism-gdscript.html

@@ -0,0 +1,66 @@
+<h2>Full example</h2>
+<pre><code>extends BaseClass
+class_name MyClass, "res://path/to/optional/icon.svg"
+
+# Member Variables
+
+var a = 5
+var s = "Hello"
+var arr = [1, 2, 3]
+var dict = {"key": "value", 2:3}
+var typed_var: int
+var inferred_type := "String"
+
+# Constants
+
+const ANSWER = 42
+const THE_NAME = "Charly"
+
+# Enums
+
+enum {UNIT_NEUTRAL, UNIT_ENEMY, UNIT_ALLY}
+enum Named {THING_1, THING_2, ANOTHER_THING = -1}
+
+# Built-in Vector Types
+
+var v2 = Vector2(1, 2)
+var v3 = Vector3(1, 2, 3)
+
+# Function
+
+func some_function(param1, param2):
+	var local_var = 5
+
+	if param1 &lt; local_var:
+		print(param1)
+	elif param2 > 5:
+		print(param2)
+	else:
+		print("Fail!")
+
+	for i in range(20):
+		print(i)
+
+	while param2 != 0:
+		param2 -= 1
+
+	var local_var2 = param1 + 3
+	return local_var2
+
+# Functions override functions with the same name on the base/parent class.
+# If you still want to call them, use '.' (like 'super' in other languages).
+
+func something(p1, p2):
+	.something(p1, p2)
+
+# Inner Class
+
+class Something:
+	var a = 10
+
+# Constructor
+
+func _init():
+	print("Constructed!")
+	var lv = Something.new()
+	print(lv.a)</code></pre>

plugins/show-language/prism-show-language.js

@@ -53,6 +53,7 @@
 		"erb": "ERB",
 		"fsharp": "F#",
 		"gcode": "G-code",
+		"gdscript": "GDScript",
 		"gedcom": "GEDCOM",
 		"glsl": "GLSL",
 		"gml": "GameMaker Language",

tests/languages/gdscript/class-name_feature.test

@@ -0,0 +1,79 @@
+class_name Foo
+extends Bar
+
+class InnerClass:
+
+export(int) var baz
+export(int, 0) var i
+
+return foo as Node
+
+const FOO: int = 9
+var bar: bool = true
+
+func add(reference: Item, amount: int) -> Item:
+
+----------------------------------------------------
+
+[
+	["keyword", "class_name"],
+	["class-name", "Foo"],
+	["keyword", "extends"],
+	["class-name", "Bar"],
+
+	["keyword", "class"],
+	["class-name", "InnerClass"],
+	["punctuation", ":"],
+
+	["keyword", "export"],
+	["punctuation", "("],
+	["class-name", "int"],
+	["punctuation", ")"],
+	["keyword", "var"],
+	" baz\n",
+	["keyword", "export"],
+	["punctuation", "("],
+	["class-name", "int"],
+	["punctuation", ","],
+	["number", "0"],
+	["punctuation", ")"],
+	["keyword", "var"],
+	" i\n\n",
+
+	["keyword", "return"],
+	" foo ",
+	["keyword", "as"],
+	["class-name", "Node"],
+
+	["keyword", "const"],
+	["constant", "FOO"],
+	["punctuation", ":"],
+	["class-name", "int"],
+	["operator", "="],
+	["number", "9"],
+	["keyword", "var"],
+	" bar",
+	["punctuation", ":"],
+	["class-name", "bool"],
+	["operator", "="],
+	["boolean", "true"],
+
+	["keyword", "func"],
+	["function", "add"],
+	["punctuation", "("],
+	"reference",
+	["punctuation", ":"],
+	["class-name", "Item"],
+	["punctuation", ","],
+	" amount",
+	["punctuation", ":"],
+	["class-name", "int"],
+	["punctuation", ")"],
+	["operator", "->"],
+	["class-name", "Item"],
+	["punctuation", ":"]
+]
+
+----------------------------------------------------
+
+Checks for class names.

tests/languages/gdscript/keyword_feature.test

@@ -0,0 +1,91 @@
+and
+as
+assert
+break
+breakpoint
+class
+class_name
+const
+continue
+elif
+else
+enum
+export
+extends
+for
+func
+if
+in
+is
+master
+mastersync
+match
+not
+null
+onready
+or
+pass
+preload
+puppet
+puppetsync
+remote
+remotesync
+return
+self
+setget
+signal
+static
+tool
+var
+while
+yield
+
+----------------------------------------------------
+
+[
+	["keyword", "and"],
+	["keyword", "as"],
+	["keyword", "assert"],
+	["keyword", "break"],
+	["keyword", "breakpoint"],
+	["keyword", "class"],
+	["keyword", "class_name"],
+	["keyword", "const"],
+	["keyword", "continue"],
+	["keyword", "elif"],
+	["keyword", "else"],
+	["keyword", "enum"],
+	["keyword", "export"],
+	["keyword", "extends"],
+	["keyword", "for"],
+	["keyword", "func"],
+	["keyword", "if"],
+	["keyword", "in"],
+	["keyword", "is"],
+	["keyword", "master"],
+	["keyword", "mastersync"],
+	["keyword", "match"],
+	["keyword", "not"],
+	["keyword", "null"],
+	["keyword", "onready"],
+	["keyword", "or"],
+	["keyword", "pass"],
+	["keyword", "preload"],
+	["keyword", "puppet"],
+	["keyword", "puppetsync"],
+	["keyword", "remote"],
+	["keyword", "remotesync"],
+	["keyword", "return"],
+	["keyword", "self"],
+	["keyword", "setget"],
+	["keyword", "signal"],
+	["keyword", "static"],
+	["keyword", "tool"],
+	["keyword", "var"],
+	["keyword", "while"],
+	["keyword", "yield"]
+]
+
+----------------------------------------------------
+
+Checks for keywords.

tests/languages/gdscript/number_feature.test

@@ -0,0 +1,34 @@
+123
+-123
+123.456
+.5
+1.2e-34
+
+0xBadFace
+0b01010101
+
+1_000_000_000_000
+0xBAD_FACE
+0b_0010_0010_0100_0100
+
+----------------------------------------------------
+
+[
+	["number", "123"],
+	["operator", "-"],
+	["number", "123"],
+	["number", "123.456"],
+	["number", ".5"],
+	["number", "1.2e-34"],
+
+	["number", "0xBadFace"],
+	["number", "0b01010101"],
+
+	["number", "1_000_000_000_000"],
+	["number", "0xBAD_FACE"],
+	["number", "0b_0010_0010_0100_0100"]
+]
+
+----------------------------------------------------
+
+Checks for numbers.

tests/languages/gdscript/operator_feature.test

@@ -0,0 +1,46 @@
++ - * / %
+& | ~ ^ >> <<
+&& || !
+> < = == != >= <=
+:=
+->
++= -= *= /= %= &= |=
+
+----------------------------------------------------
+
+[
+	["operator", "+"],
+	["operator", "-"],
+	["operator", "*"],
+	["operator", "/"],
+	["operator", "%"],
+	["operator", "&"],
+	["operator", "|"],
+	["operator", "~"],
+	["operator", "^"],
+	["operator", ">>"],
+	["operator", "<<"],
+	["operator", "&&"],
+	["operator", "||"],
+	["operator", "!"],
+	["operator", ">"],
+	["operator", "<"],
+	["operator", "="],
+	["operator", "=="],
+	["operator", "!="],
+	["operator", ">="],
+	["operator", "<="],
+	["operator", ":="],
+	["operator", "->"],
+	["operator", "+="],
+	["operator", "-="],
+	["operator", "*="],
+	["operator", "/="],
+	["operator", "%="],
+	["operator", "&="],
+	["operator", "|="]
+]
+
+----------------------------------------------------
+
+Checks for operators.

tests/languages/gdscript/punctuation_feature.test

@@ -0,0 +1,20 @@
+. : , ; [] () {}
+
+----------------------------------------------------
+
+[
+	["punctuation", "."],
+	["punctuation", ":"],
+	["punctuation", ","],
+	["punctuation", ";"],
+	["punctuation", "["],
+	["punctuation", "]"],
+	["punctuation", "("],
+	["punctuation", ")"],
+	["punctuation", "{"],
+	["punctuation", "}"]
+]
+
+----------------------------------------------------
+
+Checks for punctuation.