Fix syntax highlighting edge cases (#350)

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

syntaxes/GDScript.tmLanguage.json

@@ -5,6 +5,12 @@
     "scopeName": "source.gdscript",
     "name": "GDScript",
     "patterns": [
+        {
+            "include": "#nodepath_object"
+        },
+        {
+            "include": "#nodepath_function"
+        },
         {
             "include": "#base_expression"
         },
@@ -159,24 +165,88 @@
                 }
             ]
         },
+        "nodepath_object": {
+            "name": "meta.literal.nodepath.gdscript",
+            "begin": "(NodePath)\\s*(?:\\()",
+            "beginCaptures": {
+                "1": {
+                    "name": "support.class.library.gdscript"
+                }
+            },
+            "end": "(?:\\))",
+            "patterns": [
+                {
+                    "begin": "[\\\"\\']",
+                    "end": "[\\\"\\']",
+                    "name": "constant.character.escape"
+                }
+            ]
+        },
+        "nodepath_function": {
+            "name": "meta.literal.nodepath.gdscript",
+            "begin": "(get_node_or_null|has_node|find_node|get_node)\\s*(?:\\()",
+            "beginCaptures": {
+                "1": {
+                    "name": "entity.name.function.gdscript"
+                }
+            },
+            "end": "(?:\\))",
+            "patterns": [
+                {
+                    "begin": "[\\\"\\']",
+                    "end": "[\\\"\\']",
+                    "name": "constant.character.escape"
+                }
+            ]
+        },
         "self": {
             "match": "\\bself\\b",
             "name": "variable.language.gdscript"
         },
         "base_expression": {
             "patterns": [
+                {
+                    "include": "#builtin_get_node_shorthand"
+                },
+                {
+                    "include": "#nodepath_object"
+                },
+                {
+                    "include": "#nodepath_function"
+                },
                 {
                     "include": "#strings"
                 },
+                {
+                    "include": "#keywords"
+                },
+                {
+                    "include": "#function-call"
+                },
                 {
                     "include": "#comment"
                 },
+                {
+                    "include": "#self"
+                },
                 {
                     "include": "#letter"
                 },
                 {
                     "include": "#numbers"
                 },
+                {
+                    "include": "#builtin_func"
+                },
+                {
+                    "include": "#builtin_classes"
+                },
+                {
+                    "include": "#const_vars"
+                },
+                {
+                    "include": "#pascal_case_class"
+                },
                 {
                     "include": "#line-continuation"
                 }
@@ -487,6 +557,32 @@
             ]
         },
         "annotated-parameter": {
+            "begin": "(?x)\n  \\b\n  ([[:alpha:]_]\\w*) \\s* (:)\n",
+            "end": "(,)|(?=\\))",
+            "beginCaptures": {
+                "1": {
+                    "name": "variable.parameter.function.language.gdscript"
+                },
+                "2": {
+                    "name": "punctuation.separator.annotation.gdscript"
+                }
+            },
+            "endCaptures": {
+                "1": {
+                    "name": "punctuation.separator.parameters.gdscript"
+                }
+            },
+            "patterns": [
+                {
+                    "include": "#base_expression"
+                },
+                {
+                    "name": "keyword.operator.assignment.gdscript",
+                    "match": "=(?!=)"
+                }
+            ]
+        },
+        "annotated-parameter2": {
             "begin": "(?x)\n  \\b\n  ([[:alpha:]_]\\w*) \\s* (:) \\s* ([[:alpha:]_]\\w*)? \\s* (=)? \\s* ([[:alpha:].0-9\\'\\\"_]*)?\n",
             "end": "(,)|(?=\\))",
             "beginCaptures": {
@@ -512,10 +608,7 @@
                 "5": {
                     "patterns": [
                         {
-                            "include": "#numbers"
+                            "include": "#base_expression"
-                        },
-                        {
-                            "include": "#strings"
                         }
                     ]
                 }
@@ -562,6 +655,85 @@
         "any-property": {
             "match": "(?<=[^.]\\.)\\b([A-Za-z_]\\w*)\\b(?![(])",
             "name": "variable.other.property.gdscript"
+        },
+        "function-call": {
+            "name": "meta.function-call.gdscript",
+            "comment": "Regular function call of the type \"name(args)\"",
+            "begin": "(?x)\n  \\b(?=\n    ([[:alpha:]_]\\w*) \\s* (\\()\n  )\n",
+            "end": "(\\))",
+            "endCaptures": {
+                "1": {
+                    "name": "punctuation.definition.arguments.end.gdscript"
+                }
+            },
+            "patterns": [
+                {
+                    "include": "#function-name"
+                },
+                {
+                    "include": "#function-arguments"
+                }
+            ]
+        },
+        "function-name": {
+            "patterns": [
+                {
+                    "include": "#builtin_func"
+                },
+                {
+                    "include": "#builtin_classes"
+                },
+                {
+                    "comment": "Some color schemas support meta.function-call.generic scope",
+                    "name": "support.function.any-method.gdscript",
+                    "match": "(?x)\n  \\b ([[:alpha:]_]\\w*) \\b\n"
+                }
+            ]
+        },
+        "function-arguments": {
+            "begin": "(\\()",
+            "end": "(?=\\))(?!\\)\\s*\\()",
+            "beginCaptures": {
+                "1": {
+                    "name": "punctuation.definition.arguments.begin.gdscript"
+                }
+            },
+            "contentName": "meta.function-call.arguments.gdscript",
+            "patterns": [
+                {
+                    "name": "punctuation.separator.arguments.gdscript",
+                    "match": "(,)"
+                },
+                {
+                    "match": "\\b([[:alpha:]_]\\w*)\\s*(=)(?!=)",
+                    "captures": {
+                        "1": {
+                            "name": "variable.parameter.function-call.gdscript"
+                        },
+                        "2": {
+                            "name": "keyword.operator.assignment.gdscript"
+                        }
+                    }
+                },
+                {
+                    "name": "keyword.operator.assignment.gdscript",
+                    "match": "=(?!=)"
+                },
+                {
+                    "include": "#base_expression"
+                },
+                {
+                    "match": "\\s*(\\))\\s*(\\()",
+                    "captures": {
+                        "1": {
+                            "name": "punctuation.definition.arguments.end.gdscript"
+                        },
+                        "2": {
+                            "name": "punctuation.definition.arguments.begin.gdscript"
+                        }
+                    }
+                }
+            ]
         }
     }
 }

syntaxes/examples/gdscript1.gd

@@ -12,11 +12,11 @@ puppet var e :int
 signal sig_a
 signal sig_b()
 signal sig_c(param1, param2)
-signal sig_d(param1: int, param2: Dictionary)
+# signal sig_d(param1: int, param2: Dictionary)
-signal sig_e(
+# signal sig_e(
-		param1: int, # first param
+# 		param1: int, # first param
-		param2: Dictionary,
+# 		param2: Dictionary,
-	)
+# 	)
 
 # ------------------------------------------------------------------------------
 
@@ -37,10 +37,46 @@ func get_g() -> int:
 
 # ------------------------------------------------------------------------------
 
-func func_a():
+func func_a(param1, param2, param3):
+	self.test()
+	$Node.get_node('Foo')
+	$Node.has_node('Foo')
+	$Node.find_node('Foo')
+	$Node.get_node_or_null('Foo')
+	print($Node.has_node('Foo'))
+	print(NodePath('Foo'))
+	print(NodePath("Foo"))
 	pass
 
-func func_b(param1, param2):
+func func_b(param1, param2=func_a(10, 1.0, 'test')) -> void:
+	pass
+
+func func_b1(param1 = false, param2: bool = false, param3 := false):
+	pass
+
+func func_b2(param1 = 10, param2: int = 100, param3 := 1000):
+	pass
+
+func func_b3(param1 = 1.0, param2: float = 10.0, param3 := 100.001):
+	pass
+
+func func_b4(param1 = 'foo', param2: String = 'bar', param3 := 'foobar'):
+	pass
+
+func func_b5(
+		param1 = 'foo', # comment
+		param2: String = 'bar',
+		param3: float = 3.14159,
+		param4:='foobar',
+		param5:=1000,
+		param6:=[],
+		param7:={},
+		param8:=func_a(),
+		param9:=Vector2(0, 1),
+		param10:=Vector2(0, 0),
+		param11:=Color(1, 1, 1, 0.5),
+		param12:=NodePath('Foo')
+	) -> void:
 	pass
 
 var dict = {
@@ -51,21 +87,20 @@ var dict = {
 
 func func_c(
 		param1: int = 10,
-		param11,
 		param2 := 1.0,
 		param3: String = 'string',
-		param4 := {a=0, b=0.0, c='test'},
+		param4 := {a=0, b=0.0, c='test'}
 	):
 	pass
 
 # ------------------------------------------------------------------------------
 
-var h = "double quotes"
+var q = "double quotes"
-var i = 'single quotes'
+var r = 'single quotes'
-var j = """
+var s = """
 triple double quotes
 """
-# var k = '''triple single quotes''' # this should be red because it's invalid
+var t = '''triple single quotes''' # this should be red because it's invalid
 
 # ------------------------------------------------------------------------------