Overhaul syntax highlighting (#342)

Co-authored-by: Hugo Locurcio <hugo.locurcio@hugo.pro>

syntaxes/examples/gdscript1.gd

@@ -0,0 +1,143 @@
+extends Node
+class_name TestClass
+
+# ******************************************************************************
+
+var a
+remote var b = 10.0
+remotesync var c := 20
+master var d :int = 30
+puppet var e :int
+
+signal sig_a
+signal sig_b()
+signal sig_c(param1, param2)
+signal sig_d(param1: int, param2: Dictionary)
+signal sig_e(
+		param1: int, # first param
+		param2: Dictionary,
+	)
+
+# ------------------------------------------------------------------------------
+
+var f = 40 setget set_f
+func set_f(value):
+	pass
+
+var g:int setget set_g, get_g
+func set_g(value: int=0) -> void:
+	pass
+
+var h:float = 1.0 setget set_h, get_h
+func set_h(value: int=0) -> void:
+	pass
+
+func get_g() -> int:
+	return 0
+
+# ------------------------------------------------------------------------------
+
+func func_a():
+	pass
+
+func func_b(param1, param2):
+	pass
+
+var dict = {
+	a = 0,
+	b = 0.0,
+	c = 'test',
+} 
+
+func func_c(
+		param1: int = 10,
+		param11,
+		param2 := 1.0,
+		param3: String = 'string',
+		param4 := {a=0, b=0.0, c='test'},
+	):
+	pass
+
+# ------------------------------------------------------------------------------
+
+var h = "double quotes"
+var i = 'single quotes'
+var j = """
+triple double quotes
+"""
+# var k = '''triple single quotes''' # this should be red because it's invalid
+
+# ------------------------------------------------------------------------------
+
+var IS_CONSTANT
+var not_CONSTANT
+var ALSO_NOT_constant
+var CONSTANT_not
+
+# ------------------------------------------------------------------------------
+
+onready var node_a = $Child
+onready var node_b = $Child/GrandChild
+onready var node_bb = $Child/GrandChild/GreatGrandChild
+onready var node_bbb = $Child/GrandChild/GreatGrandChild/GreatGreatGrandChild
+onready var node_c = $"../Sibling"
+onready var node_cc = $'../Sibling'
+onready var node_d = $'..' # parent
+onready var node_e = $"../.." # grandparent
+
+onready var node_f = get_node('Child')
+onready var node_g = get_node("Child/GrandChild")
+onready var node_h = get_node("../Sibling")
+
+if has_node('Child') and get_node('Child').has_node('GrandChild'):
+	pass
+
+onready var node_i = $badlyNamedChild
+onready var node_j = $badlyNamedChild/badly_named_grandchild
+
+var node_path_a = NodePath("Child")
+var node_path_b = NodePath('Child/GrandChild')
+var node_path_c = NodePath('../Sibling')
+
+# ------------------------------------------------------------------------------
+
+var _script = GDScript.new()
+
+var directions = [
+	Vector2.UP,
+	Vector2.DOWN,
+	Vector2.LEFT,
+	Vector2.RIGHT,
+]
+
+enum test_enum {
+	VALUE_1,
+	VALUE_2,
+	VALUE_3,
+}
+
+export(test_enum) var enum_variable = test_enum.VALUE_1
+
+# ------------------------------------------------------------------------------
+
+class InnerClass:
+	var some_var = 100
+	var dict = {
+		'key_a': some_var,
+		'key_b': str(10),
+		key_c = some_var,
+		key_d = int('10'),
+		key_e = Color(1, 1, 1),
+		key_f = Vector2(10, -10)
+	}
+
+	func _ready():
+		if true and true:
+			pass
+		elif false:
+			while true:
+				pass
+		else:
+			pass
+		
+		pass