Added GDScript Lexer support for % and $ symbols consistent with Godot Engine

include/LexicalStyles.iface

@@ -2305,3 +2305,4 @@ val SCE_GD_COMMENTBLOCK=12
 val SCE_GD_STRINGEOL=13
 val SCE_GD_WORD2=14
 val SCE_GD_ANNOTATION=15
+val SCE_GD_NODEPATH=16

include/SciLexer.h

@@ -2053,6 +2053,7 @@
 #define SCE_GD_STRINGEOL 13
 #define SCE_GD_WORD2 14
 #define SCE_GD_ANNOTATION 15
+#define SCE_GD_NODEPATH 16
 /* --Autogenerated -- end of section automatically generated from Scintilla.iface */
 
 #endif

lexers/LexGDScript.cxx

@@ -94,6 +94,16 @@ int GetGDStringState(Accessor &styler, Sci_Position i, Sci_PositionU *nextIndex)
 	}
 }
 
+int GetGDStringState(int ch) {
+	if (ch != '"' && ch != '\'')
+		return SCE_GD_DEFAULT;
+
+	if (ch == '"')
+		return SCE_GD_STRING;
+	else
+		return SCE_GD_CHARACTER;
+}
+
 inline bool IsAWordChar(int ch, bool unicodeIdentifiers) {
 	if (IsASCII(ch))
 		return (IsAlphaNumeric(ch) || ch == '.' || ch == '_');
@@ -104,6 +114,16 @@ inline bool IsAWordChar(int ch, bool unicodeIdentifiers) {
 	return IsXidContinue(ch);
 }
 
+inline bool IsANodePathChar(int ch, bool unicodeIdentifiers) {
+	if (IsASCII(ch))
+		return (IsAlphaNumeric(ch) || ch == '_' || ch == '/' || ch =='%');
+
+	if (!unicodeIdentifiers)
+		return false;
+
+	return IsXidContinue(ch);
+}
+
 inline bool IsAWordStart(int ch, bool unicodeIdentifiers) {
 	if (IsASCII(ch))
 		return (IsUpperOrLowerCase(ch) || ch == '_');
@@ -209,6 +229,7 @@ LexicalClass lexicalClasses[] = {
 	13, "SCE_GD_STRINGEOL", "error literal string", "End of line where string is not closed",
 	14, "SCE_GD_WORD2", "identifier", "Highlighted identifiers",
 	15, "SCE_GD_ANNOTATION", "annotation", "Annotations",
+	16, "SCE_GD_NODEPATH", "path", "Node path",
 };
 
 }
@@ -390,7 +411,9 @@ void SCI_METHOD LexerGDScript::Lex(Sci_PositionU startPos, Sci_Position length,
 	bool indentGood = true;
 	Sci_Position startIndicator = sc.currentPos;
 	bool inContinuedString = false;
-
+	bool percentIsNodePath = false;
+	int nodePathStringState = SCE_GD_DEFAULT;
+
 	for (; sc.More(); sc.Forward()) {
 
 		if (sc.atLineStart) {
@@ -412,6 +435,7 @@ void SCI_METHOD LexerGDScript::Lex(Sci_PositionU startPos, Sci_Position length,
 		}
 
 		if (sc.atLineEnd) {
+			percentIsNodePath = false;
 			ProcessLineEnd(sc, inContinuedString);
 			lineCurrent++;
 			if (!sc.More())
@@ -479,6 +503,18 @@ void SCI_METHOD LexerGDScript::Lex(Sci_PositionU startPos, Sci_Position length,
 			if (!IsAWordStart(sc.ch, options.unicodeIdentifiers)) {
 				sc.SetState(SCE_GD_DEFAULT);
 			}
+		} else if (sc.state == SCE_GD_NODEPATH) {
+			if (nodePathStringState != SCE_GD_DEFAULT) {
+				if (sc.ch == GetGDStringQuoteChar(nodePathStringState) ) {
+					nodePathStringState = SCE_GD_DEFAULT;
+				}
+			} else {
+				if (IsGDStringStart(sc.ch)) {
+					nodePathStringState = GetGDStringState(sc.ch);
+				} else if (!IsANodePathChar(sc.ch, options.unicodeIdentifiers)) {
+					sc.SetState(SCE_GD_DEFAULT);
+				}
+			}
 		} else if (IsGDSingleQuoteStringState(sc.state)) {
 			if (sc.ch == '\\') {
 				if ((sc.chNext == '\r') && (sc.GetRelative(2) == '\n')) {
@@ -541,14 +577,17 @@ void SCI_METHOD LexerGDScript::Lex(Sci_PositionU startPos, Sci_Position length,
 						base_n_number = true;
 						sc.SetState(SCE_GD_NUMBER);
 					} else {
-						sc.SetState(SCE_GD_NUMBER);
 						sc.ForwardSetState(SCE_GD_IDENTIFIER);
 					}
 				} else {
 					base_n_number = false;
 					sc.SetState(SCE_GD_NUMBER);
 				}
+			} else if ((sc.ch == '$') || (sc.ch == '%' && (percentIsNodePath || IsFirstNonWhitespace(sc.currentPos, styler)))) {
+				percentIsNodePath = false;
+				sc.SetState(SCE_GD_NODEPATH);
 			} else if (isoperator(sc.ch) || sc.ch == '`') {
+				percentIsNodePath = !((sc.ch == ')') || (sc.ch == ']') || (sc.ch == '}'));
 				sc.SetState(SCE_GD_OPERATOR);
 			} else if (sc.ch == '#') {
 				sc.SetState(sc.chNext == '#' ? SCE_GD_COMMENTBLOCK : SCE_GD_COMMENTLINE);

test/examples/gdscript/AllStyles.gd

@@ -49,3 +49,7 @@ var hilight = 2
 @onready
 var a = 3
 @onready var b = 3
+
+# node-identifier=16
+%node
+$node

test/examples/gdscript/AllStyles.gd.folded

@@ -49,4 +49,8 @@
  0 400   0   @onready
  0 400   0   var a = 3
  0 400   0   @onready var b = 3
+ 1 400   0   
+ 0 400   0   # node-identifier=16
+ 0 400   0   %node
+ 0 400   0   $node
  1 400   0   

test/examples/gdscript/AllStyles.gd.styled

@@ -49,3 +49,7 @@
 {15}@onready{0}
 {5}var{0} {11}a{0} {10}={0} {2}3{0}
 {15}@onready{0} {5}var{0} {11}b{0} {10}={0} {2}3{0}
+
+{1}# node-identifier=16{0}
+{16}%node{0}
+{16}$node{0}

test/examples/gdscript/NodePath.gd

@@ -0,0 +1,33 @@
+# nodepath
+
+$Node
+
+%Node
+
+%node/"n o d e"/%'n o d e'
+
+%"No de"
+
+
+$/root/ThisNode/%Node % %test
+
+$MainMenuPanel/%Options % %test
+
+%Options % %test
+
+$Node % %test
+
+
+get_node("%Options") % %test
+
+$"Nod   se" % %test
+
+$/test/"No % de"/test % %test
+
+%node/"n o d e"/'n o d e' % %"No De"
+
+"%010d" % 12345
+
+1 % 1
+
+a % b

test/examples/gdscript/NodePath.gd.folded

@@ -0,0 +1,34 @@
+ 0 400   0   # nodepath
+ 1 400   0   
+ 0 400   0   $Node
+ 1 400   0   
+ 0 400   0   %Node
+ 1 400   0   
+ 0 400   0   %node/"n o d e"/%'n o d e'
+ 1 400   0   
+ 0 400   0   %"No de"
+ 1 400   0   
+ 1 400   0   
+ 0 400   0   $/root/ThisNode/%Node % %test
+ 1 400   0   
+ 0 400   0   $MainMenuPanel/%Options % %test
+ 1 400   0   
+ 0 400   0   %Options % %test
+ 1 400   0   
+ 0 400   0   $Node % %test
+ 1 400   0   
+ 1 400   0   
+ 0 400   0   get_node("%Options") % %test
+ 1 400   0   
+ 0 400   0   $"Nod   se" % %test
+ 1 400   0   
+ 0 400   0   $/test/"No % de"/test % %test
+ 1 400   0   
+ 0 400   0   %node/"n o d e"/'n o d e' % %"No De"
+ 1 400   0   
+ 0 400   0   "%010d" % 12345
+ 1 400   0   
+ 0 400   0   1 % 1
+ 1 400   0   
+ 0 400   0   a % b
+ 1 400   0   

test/examples/gdscript/NodePath.gd.styled

@@ -0,0 +1,33 @@
+{1}# nodepath{0}
+
+{16}$Node{0}
+
+{16}%Node{0}
+
+{16}%node/"n o d e"/%'n o d e'{0}
+
+{16}%"No de"{0}
+
+
+{16}$/root/ThisNode/%Node{0} {10}%{0} {16}%test{0}
+
+{16}$MainMenuPanel/%Options{0} {10}%{0} {16}%test{0}
+
+{16}%Options{0} {10}%{0} {16}%test{0}
+
+{16}$Node{0} {10}%{0} {16}%test{0}
+
+
+{11}get_node{10}({3}"%Options"{10}){0} {10}%{0} {16}%test{0}
+
+{16}$"Nod   se"{0} {10}%{0} {16}%test{0}
+
+{16}$/test/"No % de"/test{0} {10}%{0} {16}%test{0}
+
+{16}%node/"n o d e"/'n o d e'{0} {10}%{0} {16}%"No De"{0}
+
+{3}"%010d"{0} {10}%{0} {2}12345{0}
+
+{2}1{0} {10}%{0} {2}1{0}
+
+{11}a{0} {10}%{0} {11}b{0}