made several fixes and started work on editor

.gitattributes

@@ -0,0 +1 @@
+/addons/Wol/editor/WolEditor.tscn filter=lfs diff=lfs merge=lfs -text

ExampleDialogue/ExampleScene.gd

@@ -8,17 +8,20 @@ func _ready():
 	$Ship/DialogueStarter.connect('body_entered', self, '_on_player_near_dialogue', [$Ship, true])
 	$Ship/DialogueStarter.connect('body_exited', self, '_on_player_near_dialogue', [$Ship, false])
 
+	$Dialogue/Wol.connect('finished', self, '_on_finished')
+
 func _on_player_near_dialogue(_player, node, entered):
-	print('body entered?', entered)
 	if entered:
 		current_dialogue = node.name
 	else:
 		current_dialogue = null
 
+func _on_finished():
+	$DialogueCooldown.start()
+
 func _process(_delta):
-	if Input.is_action_just_released('ui_accept') and current_dialogue and not $Dialogue/Wol.running:
+	if Input.is_action_just_released('ui_accept') \
-		print(current_dialogue)
+			and current_dialogue and not $Dialogue/Wol.running and $DialogueCooldown.time_left == 0:
 		$Dialogue/Wol.starting_node = current_dialogue
 		$Dialogue/Wol.path = 'res://ExampleDialogue/%s.yarn' % current_dialogue
 		$Dialogue/Wol.start()
-		print($Dialogue/Wol.variable_storage)

ExampleDialogue/ExampleScene.tscn

@@ -230,3 +230,7 @@ __meta__ = {
 
 [node name="CollisionPolygon2D" type="CollisionPolygon2D" parent="StaticBody2D"]
 polygon = PoolVector2Array( -3, 427, -40, 426, -40, 648, 838, 647, 838, 419, 787, 420, 788, 600, 2, 600, 0, 420 )
+
+[node name="DialogueCooldown" type="Timer" parent="."]
+wait_time = 0.4
+one_shot = true

addons/Wol/core/StandardLibrary.gd

@@ -79,7 +79,11 @@ func node_visit_count(node = virtual_machine.current_node.name):
 	if node is Value:
 		node = virtual_machine.program.strings[node.value()].text
 
+
 	var variable_storage = virtual_machine.dialogue.variable_storage
 	var visited_node_count = variable_storage[virtual_machine.program.filename]
 
+	print('checking node "%s"' % node)
+	print(variable_storage)
+
 	return visited_node_count[node] if visited_node_count.has(node) else 0

addons/Wol/core/VirtualMachine.gd

@@ -68,7 +68,7 @@ func set_node(name):
 		dialogue.variable_storage[program.filename] = {}
 
 	if not dialogue.variable_storage[program.filename].has(name):
-		dialogue.variable_storage[program.filename][name] = 0
+		dialogue.variable_storage[program.filename][name] = 1
 	else:
 		dialogue.variable_storage[program.filename][name] += 1
 	return true

addons/Wol/core/compiler/compiler.gd

@@ -1,5 +1,7 @@
 extends Object
 
+signal error(message, line_number, column)
+
 const Constants = preload('res://addons/Wol/core/Constants.gd')
 const Lexer = preload('res://addons/Wol/core/compiler/Lexer.gd')
 const Program = preload('res://addons/Wol/core/Program.gd')
@@ -12,13 +14,15 @@ var filename = ''
 
 var current_node
 var has_implicit_string_tags = false
+var soft_assert = false
 
 var string_count = 0
 var string_table = {}
 var label_count = 0
 
-func _init(_filename, _source = null):
+func _init(_filename, _source = null, _soft_assert = false):
 	filename = _filename
+	soft_assert = _soft_assert
 
 	if not _filename and _source:
 		self.source = _source
@@ -28,32 +32,33 @@ func _init(_filename, _source = null):
 		self.source = file.get_as_text()
 		file.close()
 
-func compile():
+	var source_lines = source.split('\n')
-	var header_sep = RegEx.new()
-	var header_property = RegEx.new()
-	header_sep.compile('---(\r\n|\r|\n)')
-	header_property.compile('(?<field>.*): *(?<value>.*)')
-
-	assert(header_sep.search(source), 'No headers found!')
-	
-	var line_number = 0
-
-	var source_lines = source.split('\n', false)
 	for i in range(source_lines.size()):
 		source_lines[i] = source_lines[i].strip_edges(false, true)
 
-	var parsed_nodes = []
+	source = source_lines.join('\n')
-	while line_number < source_lines.size():
-		var title = ''
-		var body = ''
 
-		# Parse header
+func get_headers(offset = 0):
-		while true:
+	var header_property = RegEx.new()
+	var header_sep = RegEx.new()
+
+	header_sep.compile('---(\r\n|\r|\n)')
+	header_property.compile('(?<field>.*): *(?<value>.*)')
+
+	self.assert(header_sep.search(source), 'No headers found!')
+
+	var title = ''
+	var position = Vector2.ZERO
+
+	var source_lines = source.split('\n')
+	var line_number = offset
+	while line_number < source_lines.size():
 		var line = source_lines[line_number]
 		line_number += 1
 		
 		if not line.empty():
 			var result = header_property.search(line)
+
 			if result != null:
 				var field = result.get_string('field')
 				var value = result.get_string('value')
@@ -61,37 +66,86 @@ func compile():
 				if field == 'title':
 					var regex = RegEx.new()
 					regex.compile(INVALID_TITLE)
-						assert(not regex.search(value), 'Invalid characters in title "%s", correct to "%s"' % [value, regex.sub(value, '', true)])
+					self.assert(not regex.search(value), 'Invalid characters in title "%s", correct to "%s"' % [value, regex.sub(value, '', true)])
 
 					title = value
-					# TODO: Implement position, color and tags
 
-			if line_number >= source_lines.size() or line == '---':
+				if field == 'position':
+					var regex = RegEx.new()
+					regex.compile('^position:.*,.*\\d$')
+					self.assert(regex.search(line), 'Couldn\'t parse position property in the headers, got "%s" instead in node "%s"' % [value, title])
+
+					position = Vector2(int(value.split(',')[0].strip_edges()), int(value.split(',')[1].strip_edges()))
+
+				# TODO: Implement color and tags
+
+		if line == '---':
 			break
 
-		# past header
+	return {
+		'title': title,
+		'position': position
+	}
+
+func get_body(offset = 0):
 	var body_lines = []
 	
+	var source_lines = source.split('\n')
+	var recording = false
+	var line_number = offset
+
 	while line_number < source_lines.size() and source_lines[line_number] != '===':
+		if recording:
 			body_lines.append(source_lines[line_number])
+
+		recording = recording or source_lines[line_number] == '---'
 		line_number += 1
 
 	line_number += 1
 
-		body = PoolStringArray(body_lines).join('\n')
+	return PoolStringArray(body_lines).join('\n')
-		var lexer = Lexer.new(filename, title, body)
-		var tokens = lexer.tokenize()
 
-		var parser = Parser.new(title, tokens)
+func get_nodes():
-		var parser_node = parser.parse_node()
+	var nodes = []
+	var line_number = 0
+	var source_lines = source.split('\n')
+	while line_number < source_lines.size():
+		var headers = get_headers(line_number)
+		var body = get_body(line_number)
+		headers.body = body
 
-		parser_node.name = title
+		nodes.append(headers)
-		# parser_node.tags = title
+
-		parsed_nodes.append(parser_node)
+		# Add +2 to the final line to skip the === from that node
+		line_number = Array(source_lines).find_last(body.split('\n')[-1]) + 2
 
 		while line_number < source_lines.size() and source_lines[line_number].empty():
 			line_number += 1
 	
+	return nodes
+
+func assert(statement, message, line_number = -1, column = -1, _absolute_line_number = -1):
+	if not soft_assert:
+		assert(statement, message + ('; on line %d column %d' % [line_number, column]))
+	elif not statement:
+		emit_signal('error', message, line_number, column)
+
+func compile():
+	var parsed_nodes = []
+	for node in get_nodes():
+		var lexer = Lexer.new(self, filename, node.title, node.body)
+		var tokens = lexer.tokenize()
+
+		# In case of lexer error
+		if not tokens:
+			return
+
+		var parser = Parser.new(self, node.title, tokens)
+		var parser_node = parser.parse_node()
+
+		parser_node.name = node.title
+		parsed_nodes.append(parser_node)
+
 	var program = Program.new()
 	program.filename = filename
 
@@ -104,7 +158,7 @@ func compile():
 	return program
 
 func compile_node(program, parsed_node):
-	assert(not program.nodes.has(parsed_node.name), 'Duplicate node in program: %s' % parsed_node.name)
+	self.assert(not program.nodes.has(parsed_node.name), 'Duplicate node in program: %s' % parsed_node.name)
 
 	var node_compiled = Program.WolNode.new()
 
@@ -205,7 +259,7 @@ func generate_statement(node, statement):
 		Constants.StatementTypes.Line:
 			generate_line(node, statement)
 		_:
-			assert(false, 'Illegal statement type [%s]. Could not generate code.' % statement.type)
+			self.assert(false, statement.line_number, 'Illegal statement type [%s]. Could not generate code.' % statement.type)
 
 func generate_custom_command(node, command):
 	# TODO: See if the first tree of this statement is being used

addons/Wol/core/compiler/lexer.gd

@@ -2,7 +2,7 @@ extends Object
 
 const Constants = preload('res://addons/Wol/core/Constants.gd')
 
-const LINE_COMENT = '//'
+const LINE_COMMENT = '//'
 const FORWARD_SLASH = '/'
 const LINE_SEPARATOR = '\n'
 
@@ -22,6 +22,7 @@ const FORMAT_FUNCTION = 'format'
 
 var WHITESPACE = '\\s*'
 
+var compiler
 var filename = ''
 var title = ''
 var text = ''
@@ -33,14 +34,15 @@ var current_state
 var indent_stack = []
 var should_track_indent = false
 
-func _init(_filename, _title, _text):
+func _init(_compiler, _filename, _title, _text):
-	createstates()
+	create_states()
 
+	compiler = _compiler
 	filename = _filename
 	title = _title
 	text = _text
 
-func createstates():
+func create_states():
 	var patterns = {}
 	patterns[Constants.TokenType.Text] = ['.*', 'any text']
 
@@ -111,7 +113,7 @@ func createstates():
 	states[BASE].add_transition(Constants.TokenType.TagMarker, TAG, true)
 	states[BASE].add_text_rule(Constants.TokenType.Text)
 
-	#TODO: FIXME - Tags are not being proccessed properly this way. We must look for the format #{identifier}:{value}
+	#FIXME - Tags are not being proccessed properly this way. We must look for the format #{identifier}:{value}
 	#        Possible solution is to add more transitions
 	states[TAG] = LexerState.new(patterns)
 	states[TAG].add_transition(Constants.TokenType.Identifier, BASE)
@@ -236,7 +238,11 @@ func tokenize():
 	lines.append('')
 
 	for line in lines:
-		tokens += tokenize_line(line, line_number)
+		var line_tokens = tokenize_line(line, line_number)
+		if line_tokens == null:
+			return
+
+		tokens.append_array(line_tokens)
 		line_number += 1
 
 	var end_of_input = Token.new(
@@ -252,12 +258,12 @@ func tokenize():
 func tokenize_line(line, line_number):
 	var token_stack = []
 
-	var fresh_line = line.replace('\t','    ').replace('\r','')
+	var fresh_line = line.replace('\t', '    ').replace('\r', '')
 
 	var indentation = line_indentation(line)
 	var previous_indentation = indent_stack.front()[0]
 
-	if should_track_indent && indentation > previous_indentation:
+	if should_track_indent and indentation > previous_indentation:
 		indent_stack.push_front([indentation, true])
 
 		var indent = Token.new(
@@ -284,7 +290,7 @@ func tokenize_line(line, line_number):
 	whitespace.compile(WHITESPACE)
 
 	while column < fresh_line.length():
-		if fresh_line.substr(column).begins_with(LINE_COMENT):
+		if fresh_line.substr(column).begins_with(LINE_COMMENT):
 			break
 		
 		var matched = false
@@ -367,13 +373,13 @@ func tokenize_line(line, line_number):
 				line_number,
 				column
 			]
-			assert(false, 'Expected %s in file %s in node "%s" on line #%d (column #%d)' % error_data)
+			compiler.assert(false, 'Expected %s in file %s in node "%s" on line #%d (column #%d)' % error_data, line_number, column)
+			return
 
 		var last_whitespace = whitespace.search(line, column)
 		if last_whitespace:
 			column += last_whitespace.get_string().length()
 	
-	
 	token_stack.invert()
 
 	return token_stack

addons/Wol/core/compiler/parser.gd

@@ -1,13 +1,17 @@
 extends Object
 
+# warnings-disable
+
 const Constants = preload('res://addons/Wol/core/Constants.gd')
 const Lexer = preload('res://addons/Wol/core/compiler/Lexer.gd')
 const Value = preload('res://addons/Wol/core/Value.gd')
 
-var tokens = []
+var compiler
 var title = ''
+var tokens = []
 
-func _init(_title, _tokens):
+func _init(_compiler, _title, _tokens):
+	compiler = _compiler
 	title = _title
 	tokens = _tokens
 	
@@ -21,13 +25,9 @@ func parse_node():
 	return WolNode.new('Start', null, self)
 
 func next_symbol_is(valid_types):
-	var type = self.tokens.front().type
+	return tokens.front().type in valid_types
-	for valid_type in valid_types:
-		if type == valid_type:
-			return true
-	return false
 
-# NOTE:0 look ahead for `<<` and `else`
+# NOTE: 0 look ahead for `<<` and `else`
 func next_symbols_are(valid_types):
 	var temporary = [] + tokens
 	for type in valid_types:
@@ -40,7 +40,7 @@ func expect_symbol(token_types = []):
 
 	if token_types.size() == 0:
 		if token.type == Constants.TokenType.EndOfInput:
-			assert(false, 'Unexpected end of input')
+			compiler.assert(false, 'Unexpected end of input')
 		return token
 
 	for type in token_types:
@@ -60,15 +60,12 @@ func expect_symbol(token_types = []):
 		error_guess = ''
 
 	var error_data = [
-		token.filename,
-		title,
-		token.line_number,
-		token.column,
 		PoolStringArray(token_names).join(', '),
 		Constants.token_type_name(token.type),
 		error_guess
 	]
-	assert(false, '[%s|%s:%d:%d]:\nExpected token "%s" but got "%s"%s' % error_data)
+	compiler.assert(false, 'Expected token "%s" but got "%s"%s' % error_data, token.line_number, token.column)
+	return token
 
 static func tab(indent_level, input, newline = true):
 	return '%*s| %s%s' % [indent_level * 2, '', input, '' if not newline else '\n']
@@ -111,11 +108,21 @@ class WolNode extends ParseNode:
 	
 	var editor_node_tags = []
 	var statements = []
+	var parser
 
-	func _init(name, parent, parser).(parent, parser):
+	func _init(_name, parent, _parser).(parent, _parser):
-		self.name = name
+		name = _name
+		parser = _parser
 		while parser.tokens.size() > 0 \
 				and not parser.next_symbol_is([Constants.TokenType.Dedent, Constants.TokenType.EndOfInput]):
+			
+			parser.compiler.assert(
+				not parser.next_symbol_is([Constants.TokenType.Indent]),
+				'Found a stray indentation!',
+				parser.tokens.front().line_number,
+				parser.tokens.front().column
+			)
+
 			statements.append(Statement.new(self, parser))
 
 	func tree_string(indent_level):
@@ -125,109 +132,6 @@ class WolNode extends ParseNode:
 
 		return PoolStringArray(info).join('')
 
-# TODO: Evaluate use
-class Header extends ParseNode:
-	pass
-
-class InlineExpression extends ParseNode:
-	var expression
-
-	func _init(parent, parser).(parent, parser):
-		parser.expect_symbol([Constants.TokenType.ExpressionFunctionStart])
-		expression = ExpressionNode.parse(self, parser)
-		parser.expect_symbol([Constants.TokenType.ExpressionFunctionEnd])
-
-	static func can_parse(parser):
-		return parser.next_symbol_is([Constants.TokenType.ExpressionFunctionStart])
-
-	func tree_string(_indent_level):
-		return "InlineExpression:"
-
-# Returns a format_text string as [ name "{0}" key1="value1" key2="value2" ]
-class FormatFunctionNode extends ParseNode:
-	var format_text = ''
-	var expression_value
-
-	func _init(parent:ParseNode, parser, expressionCount:int).(parent, parser):
-		format_text="["
-		parser.expect_symbol([Constants.TokenType.FormatFunctionStart])
-
-		while not parser.next_symbol_is([Constants.TokenType.FormatFunctionEnd]):
-			if parser.next_symbol_is([Constants.TokenType.Text]):
-				format_text += parser.expect_symbol().value
-
-			if InlineExpression.can_parse(parser):
-				expression_value = InlineExpression.new(self, parser)
-				format_text +=" \"{%d}\" " % expressionCount
-		parser.expect_symbol()
-		format_text+="]"
-
-	static func can_parse(parser):
-		return parser.next_symbol_is([Constants.TokenType.FormatFunctionStart])
-
-	# TODO: Make format prettier and add more information
-	func tree_string(_indent_level):
-		return "FormatFunction"
-
-class LineNode extends ParseNode:
-	var line_text = ''
-	# FIXME: Right now we are putting the formatfunctions and inline expressions in the same
-	#        list but if at some point we want to stronly type our sub list we need to make a new
-	#        parse node that can have either an InlineExpression or a FunctionFormat
-	#        .. This is a consideration for Godot4.x
-	var substitutions = []
-	var line_id = ''
-	var line_tags = []
-
-	# NOTE: If format function an inline functions are both present
-	# 		returns a line in the format "Some text {0} and some other {1}[format "{2}" key="value" key="value"]"
-
-	func _init(parent, parser).(parent, parser):
-		while parser.next_symbol_is(
-				[
-					Constants.TokenType.FormatFunctionStart,
-					Constants.TokenType.ExpressionFunctionStart,
-					Constants.TokenType.Text,
-					Constants.TokenType.TagMarker
-				]
-			):
-
-			if FormatFunctionNode.can_parse(parser):
-				var format_function = FormatFunctionNode.new(self, parser, substitutions.size())
-				if format_function.expression_value != null:
-					substitutions.append(format_function.expression_value)
-
-				line_text += format_function.format_text
-
-			elif InlineExpression.can_parse(parser):
-				var inline_expression = InlineExpression.new(self, parser)
-				line_text += '{%d}' % substitutions.size()
-				substitutions.append(inline_expression)
-
-			elif parser.next_symbols_are([Constants.TokenType.TagMarker, Constants.TokenType.Identifier]):
-				parser.expect_symbol()
-				var tag_token = parser.expect_symbol([ Constants.TokenType.Identifier ])
-				if tag_token.value.begins_with("line:"):
-					if line_id.empty():
-						line_id = tag_token.value
-					else:
-						printerr("Too many line_tags @[%s:%d]" %[parser.currentNodeName, tag_token.line_number])
-						return
-				else:
-					tags.append(tag_token.value)
-
-			else:
-				var token = parser.expect_symbol()
-				if token.line_number == line_number and token.type != Constants.TokenType.BeginCommand:
-					line_text += token.value
-				else:
-					parser.tokens.push_front(token)
-					break
-
-
-	func tree_string(indent_level):
-		return tab(indent_level, 'Line: (%s)[%d]' % [line_text, substitutions.size()])
-
 class Statement extends ParseNode:
 	var Type = Constants.StatementTypes
 
@@ -270,7 +174,7 @@ class Statement extends ParseNode:
 			type = Type.Line
 
 		else:
-			printerr('Expected a statement but got %s instead. (probably an imbalanced if statement)' % parser.tokens.front()._to_string())
+			parser.compiler.assert(false, 'Expected a statement but got %s instead. (probably an imbalanced if statement)' % parser.tokens.front()._to_string())
 		
 		var tags = []
 
@@ -305,6 +209,107 @@ class Statement extends ParseNode:
 
 		return PoolStringArray(info).join('')
 
+class InlineExpression extends ParseNode:
+	var expression
+
+	func _init(parent, parser).(parent, parser):
+		parser.expect_symbol([Constants.TokenType.ExpressionFunctionStart])
+		expression = ExpressionNode.parse(self, parser)
+		parser.expect_symbol([Constants.TokenType.ExpressionFunctionEnd])
+
+	static func can_parse(parser):
+		return parser.next_symbol_is([Constants.TokenType.ExpressionFunctionStart])
+
+	func tree_string(_indent_level):
+		return "InlineExpression:"
+
+# Returns a format_text string as [ name "{0}" key1="value1" key2="value2" ]
+class FormatFunctionNode extends ParseNode:
+	var format_text = ''
+	var expression_value
+
+	func _init(parent:ParseNode, parser, expressionCount:int).(parent, parser):
+		format_text="["
+		parser.expect_symbol([Constants.TokenType.FormatFunctionStart])
+
+		# FIXME: Add exit condition in case of failure
+		while not parser.next_symbol_is([Constants.TokenType.FormatFunctionEnd]):
+			if parser.next_symbol_is([Constants.TokenType.Text]):
+				format_text += parser.expect_symbol().value
+
+			if InlineExpression.can_parse(parser):
+				expression_value = InlineExpression.new(self, parser)
+				format_text +=" \"{%d}\" " % expressionCount
+		parser.expect_symbol()
+		format_text+="]"
+
+	static func can_parse(parser):
+		return parser.next_symbol_is([Constants.TokenType.FormatFunctionStart])
+
+	# TODO: Make format prettier and add more information
+	func tree_string(_indent_level):
+		return "FormatFunction"
+
+class LineNode extends ParseNode:
+	var line_text = ''
+	# FIXME: Right now we are putting the formatfunctions and inline expressions in the same
+	#        list but if at some point we want to strongly type our sub list we need to make a new
+	#        parse node that can have either an InlineExpression or a FunctionFormat
+	#        .. This is a consideration for Godot4.x
+	var substitutions = []
+	var line_id = ''
+	var line_tags = []
+
+	# NOTE: If format function an inline functions are both present
+	# 		returns a line in the format "Some text {0} and some other {1}[format "{2}" key="value" key="value"]"
+
+	func _init(parent, parser).(parent, parser):
+		while parser.next_symbol_is(
+				[
+					Constants.TokenType.FormatFunctionStart,
+					Constants.TokenType.ExpressionFunctionStart,
+					Constants.TokenType.Text,
+					Constants.TokenType.TagMarker
+				]
+			):
+
+			if FormatFunctionNode.can_parse(parser):
+				var format_function = FormatFunctionNode.new(self, parser, substitutions.size())
+				if format_function.expression_value != null:
+					substitutions.append(format_function.expression_value)
+
+				line_text += format_function.format_text
+
+			elif InlineExpression.can_parse(parser):
+				var inline_expression = InlineExpression.new(self, parser)
+				line_text += '{%d}' % substitutions.size()
+				substitutions.append(inline_expression)
+
+			elif parser.next_symbols_are([Constants.TokenType.TagMarker, Constants.TokenType.Identifier]):
+				parser.expect_symbol()
+				var tag_token = parser.expect_symbol([ Constants.TokenType.Identifier ])
+				if tag_token.value.begins_with("line:"):
+					if line_id.empty():
+						line_id = tag_token.value
+					else:
+						printerr("Too many line_tags @[%s:%d]" % [parser.currentNodeName, tag_token.line_number])
+						return
+				else:
+					tags.append(tag_token.value)
+
+			else:
+				var token = parser.expect_symbol()
+				if token.line_number == line_number and token.type != Constants.TokenType.BeginCommand:
+					line_text += token.value
+				else:
+					parser.tokens.push_front(token)
+					break
+
+
+	func tree_string(indent_level):
+		return tab(indent_level, 'Line: (%s)[%d]' % [line_text, substitutions.size()])
+
+
 class CustomCommand extends ParseNode:
 
 	enum Type {
@@ -322,6 +327,7 @@ class CustomCommand extends ParseNode:
 		var command_tokens = []
 		command_tokens.append(parser.expect_symbol())
 
+		# FIXME: add exit condition
 		while not parser.next_symbol_is([Constants.TokenType.EndCommand]):
 			command_tokens.append(parser.expect_symbol())
 
@@ -338,9 +344,9 @@ class CustomCommand extends ParseNode:
 			type = Type.Expression
 
 		else:
-			#otherwise evaluuate command
+			# otherwise evaluate command
 			type = Type.ClientCommand
-			self.client_command = command_tokens[0].value
+			client_command = command_tokens[0].value
 	
 	func tree_string(indent_level):
 		match type:
@@ -362,9 +368,7 @@ class ShortcutOptionGroup extends ParseNode:
 		# parse options until there is no more
 		# expect one otherwise invalid
 
-		var index = 1
+		var index = 0
-		options.append(ShortCutOption.new(index, self, parser))
-		index += 1
 		while parser.next_symbol_is([Constants.TokenType.ShortcutOption]):
 			options.append(ShortCutOption.new(index, self, parser))
 			index += 1
@@ -393,7 +397,7 @@ class ShortCutOption extends ParseNode:
 		parser.expect_symbol([Constants.TokenType.ShortcutOption])
 		label = parser.expect_symbol([Constants.TokenType.Text]).value
 
-		# NOTE: Parse the conditional << if $x >> when it exists
+		# FIXME: Parse the conditional << if $x >> when it exists
 		var tags = []
 		while parser.next_symbols_are([Constants.TokenType.BeginCommand, Constants.TokenType.IfToken]) \
 			or parser.next_symbol_is([Constants.TokenType.TagMarker]):
@@ -446,6 +450,7 @@ class Block extends ParseNode:
 		parser.expect_symbol([Constants.TokenType.Indent])
 
 		#keep reading statements until we hit a dedent
+		# FIXME: find exit condition
 		while not parser.next_symbol_is([Constants.TokenType.Dedent]):
 			#parse all statements including nested blocks
 			statements.append(Statement.new(self, parser))
@@ -669,6 +674,8 @@ class ExpressionNode extends ParseNode:
 
 	# Using Djikstra's shunting-yard algorithm to convert stream of expresions into postfix notation,
 	# & then build a tree of expressions
+	
+	# TODO: Rework expression parsing
 	static func parse(parent, parser):
 		var rpn = []
 		var op_stack = []
@@ -693,20 +700,30 @@ class ExpressionNode extends ParseNode:
 
 		var last
 
+		print(parser.tokens.slice(0, 6))
 		#read expression content
 		while parser.tokens.size() > 0 and parser.next_symbol_is(valid_types):
+			print(parser.tokens.front())
 			var next = parser.expect_symbol(valid_types)
 
-			if next.type == Constants.TokenType.Variable \
+			if next.type in [
-					or next.type == Constants.TokenType.Number \
+					Constants.TokenType.Variable,
-					or next.type == Constants.TokenType.Str \
+					Constants.TokenType.Number,
-					or next.type == Constants.TokenType.FalseToken \
+					Constants.TokenType.Str,
-					or next.type == Constants.TokenType.TrueToken \
+					Constants.TokenType.FalseToken,
-					or next.type == Constants.TokenType.NullToken:
+					Constants.TokenType.TrueToken,
+					Constants.TokenType.NullToken
+				]:
 
-				#output primitives
+				# Output primitives
+				print('adding value "%s" in expression' % next)
+				print(op_stack.size())
+				if func_stack.size() != 0:
+					op_stack.append(next)
+				else:
 					rpn.append(next)
 			elif next.type == Constants.TokenType.Identifier:
+				print('adding function')
 				op_stack.push_back(next)
 				func_stack.push_back(next)
 
@@ -719,7 +736,7 @@ class ExpressionNode extends ParseNode:
 				while op_stack.back().type != Constants.TokenType.LeftParen:
 					var p = op_stack.pop_back()
 					if p == null:
-						printerr('unbalanced parenthesis %s ' % next.name)
+						printerr('unbalanced parenthesis %s' % next.name)
 						break
 					rpn.append(p)
 
@@ -732,7 +749,7 @@ class ExpressionNode extends ParseNode:
 				
 				#find the closest function on stack
 				#increment parameters
-				func_stack.back().parameter_count+=1
+				func_stack.back().parameter_count += 1
 				
 			elif Operator.is_op(next.type):
 				#this is an operator
@@ -759,7 +776,7 @@ class ExpressionNode extends ParseNode:
 					next.type = Constants.TokenType.EqualTo
 
 				#operator precedence
-				while (ExpressionNode.is_apply_precedence(next.type, op_stack)):
+				while ExpressionNode.is_apply_precedence(next.type, op_stack, parser):
 					var op = op_stack.pop_back()
 					rpn.append(op)
 
@@ -771,20 +788,28 @@ class ExpressionNode extends ParseNode:
 			elif next.type == Constants.TokenType.RightParen:
 				#leaving sub expression
 				# resolve order of operations
+				var parameters = []
 				while op_stack.back().type != Constants.TokenType.LeftParen:
-					rpn.append(op_stack.pop_back())
+					parameters.append(op_stack.pop_back())
-					if op_stack.back() == null:
+
-						printerr('Unbalanced parenthasis #RightParen. Parser.ExpressionNode')
+					parser.compiler.assert(
+						op_stack.back() != null,
+						'Unbalanced parenthasis #RightParen. Parser.ExpressionNode'
+					)
 				
 				
+				rpn.append_array(parameters)
 				op_stack.pop_back()
+				# FIXME: Something is going on with parameter counting, fixed for now
+				#		 but needs a bigger rework
 				if op_stack.back().type == Constants.TokenType.Identifier:
 					#function call
 					#last token == left paren this == no parameters
 					#else
 					#we have more than 1 param
-					if last.type != Constants.TokenType.LeftParen:
+					# if last.type != Constants.TokenType.LeftParen:
-						func_stack.back().parameter_count+=1
+					# 	func_stack.back().parameter_count += 1
+					func_stack.back().parameter_count = parameters.size()
 					
 					rpn.append(op_stack.pop_back())
 					func_stack.pop_back()
@@ -804,6 +829,8 @@ class ExpressionNode extends ParseNode:
 		var first = rpn.front()
 		var eval_stack = []#ExpressionNode
 
+		print(rpn)
+
 		while rpn.size() > 0:
 			var next = rpn.pop_front()
 			if Operator.is_op(next.type):
@@ -811,7 +838,14 @@ class ExpressionNode extends ParseNode:
 				var info = Operator.op_info(next.type)
 
 				if eval_stack.size() < info.arguments:
-					printerr('Error parsing : Not enough arguments for %s [ got %s expected - was %s]'%[Constants.token_type_name(next.type), eval_stack.size(), info.arguments])
+					printerr(
+						'Error parsing : Not enough arguments for %s [ got %s expected - was %s]' \
+						% [
+							Constants.token_type_name(next.type),
+							eval_stack.size(),
+							info.arguments
+						]
+					)
 
 				var function_parameters = []
 				for _i in range(info.arguments):
@@ -827,6 +861,7 @@ class ExpressionNode extends ParseNode:
 			# A function call
 			elif next.type == Constants.TokenType.Identifier:
 				var function_name = next.value
+				prints(function_name, next.parameter_count)
 
 				var function_parameters = []
 				for _i in range(next.parameter_count):
@@ -845,10 +880,14 @@ class ExpressionNode extends ParseNode:
 				eval_stack.append(expression)
 
 		
-		#we should have a single root expression left
+		# NOTE: We should have a single root expression left
-		#if more then we failed ---- NANI
+		# 		if more then we failed
-		if eval_stack.size() != 1:
+		parser.compiler.assert(
-			printerr('[%s] Error parsing expression (stack did not reduce correctly )' % first)
+			eval_stack.size() == 1,
+			'[%s] Error parsing expression (stack did not reduce correctly)' % first,
+			first.line_number,
+			first.column
+		)
 
 		return eval_stack.pop_back()
 
@@ -860,12 +899,13 @@ class ExpressionNode extends ParseNode:
 				return key					
 		return string
 
-	static func is_apply_precedence(_type, operator_stack):
+	static func is_apply_precedence(_type, operator_stack, parser):
 		if operator_stack.size() == 0:
 			return false
 		
 		if not Operator.is_op(_type):
-			assert(false, 'Unable to parse expression!')
+			parser.compiler.assert(false, 'Unable to parse expression!')
+			return false
 		
 		var second = operator_stack.back().type
 

addons/Wol/core/constants.gd

@@ -211,3 +211,4 @@ static func token_name(type):
 		if TokenType[key] == type:
 			return key					
 	return ''
+

addons/Wol/core/program.gd

@@ -29,7 +29,6 @@ class Line:
 	func _to_string():
 		return '%s:%d: "%s"' % [file_name.get_file(), line_number, text]
 
-
 class Option:
 	var line
 	var id = -1

addons/Wol/editor/Editor.gd

@@ -0,0 +1,56 @@
+tool
+extends Panel
+
+var current_node
+var current_graph_node
+
+func _ready():
+	hide()
+	connect('visibility_changed', self, '_on_visibility_changed')
+	$Close.connect('pressed', self, 'close')
+
+func close():
+	hide()
+
+func open_node(graph_node, node):
+	current_node = node
+	current_graph_node = graph_node
+
+	var text_edit = graph_node.get_node('TextEdit')
+	text_edit.get_parent().remove_child(text_edit)
+	$Content.add_child(text_edit)
+	toggle_text_edit(text_edit)
+	
+	show()
+	
+	# window_title = node.title
+
+func toggle_text_edit(text_edit):
+	text_edit.anchor_left = 0
+	text_edit.anchor_top = 0
+	text_edit.anchor_bottom = 1
+	text_edit.anchor_right = 1
+	text_edit.margin_left = 0
+	text_edit.margin_right = 0
+	text_edit.margin_bottom = 0
+	text_edit.margin_top = 0
+	text_edit.mouse_filter = MOUSE_FILTER_STOP if text_edit.get_parent().name == 'Content' else MOUSE_FILTER_IGNORE
+
+	text_edit.deselect()
+
+	for property in [
+		'highlight_current_line',
+		'show_line_numbers',
+		'draw_tabs',
+		'smooth_scrolling',
+		'wrap_enabled',
+		'minimap_draw'
+	]:
+		text_edit.set(property, not text_edit.get(property))
+
+func _on_visibility_changed():
+	if not visible:
+		var text_edit = $Content/TextEdit
+		$Content.remove_child(text_edit)
+		current_graph_node.add_child(text_edit)
+		toggle_text_edit(text_edit)

addons/Wol/editor/GraphNodeTemplate.tscn

@@ -0,0 +1,48 @@
+[gd_scene load_steps=3 format=2]
+
+[ext_resource path="res://addons/Wol/editor/WolGraphNode.gd" type="Script" id=1]
+
+[sub_resource type="StyleBoxFlat" id=1]
+content_margin_left = 4.0
+content_margin_right = 4.0
+content_margin_top = 26.0
+content_margin_bottom = 4.0
+corner_radius_top_left = 4
+corner_radius_top_right = 4
+corner_radius_bottom_right = 4
+corner_radius_bottom_left = 4
+
+[node name="GraphNodeTemplate" type="GraphNode"]
+margin_left = 500.0
+margin_top = 1068.0
+margin_right = 937.0
+margin_bottom = 1459.0
+mouse_filter = 1
+custom_styles/frame = SubResource( 1 )
+title = "Hello world"
+offset = Vector2( 500, 500 )
+resizable = true
+slot/0/left_enabled = false
+slot/0/left_type = 0
+slot/0/left_color = Color( 1, 1, 1, 1 )
+slot/0/right_enabled = false
+slot/0/right_type = 0
+slot/0/right_color = Color( 1, 1, 1, 1 )
+script = ExtResource( 1 )
+__meta__ = {
+"_edit_use_anchors_": false
+}
+
+[node name="TextEdit" type="TextEdit" parent="."]
+margin_left = 4.0
+margin_top = 26.0
+margin_right = 433.0
+margin_bottom = 387.0
+mouse_filter = 2
+size_flags_horizontal = 3
+size_flags_vertical = 3
+syntax_highlighting = true
+fold_gutter = true
+context_menu_enabled = false
+virtual_keyboard_enabled = false
+wrap_enabled = true

addons/Wol/editor/WolEditor.gd

@@ -0,0 +1,103 @@
+tool
+extends Control
+
+const Compiler = preload('res://addons/Wol/core/compiler/Compiler.gd')
+onready var GraphNodeTemplate = $GraphNodeTemplate
+
+var path
+var compiler
+
+func _ready():
+	for menu_button in [$Menu/File]:
+		menu_button.get_popup().connect('index_pressed', self, '_on_menu_pressed', [menu_button.get_popup()])
+
+	# TODO: Conditionally load in theme based on Editor or standalone
+
+	path = 'res://dialogue.yarn'
+	build_nodes()
+
+func build_nodes():
+	compiler = Compiler.new(path)
+
+	for node in compiler.get_nodes():
+		var graph_node = GraphNodeTemplate.duplicate()
+		$GraphEdit.add_child(graph_node)
+		graph_node.node = node
+		graph_node.show()
+		graph_node.connect('gui_input', self, '_on_graph_node_input', [graph_node, node])
+
+func serialize_to_file():
+	var buffer = []
+	for graph_node in $GraphEdit.get_children():
+		if not graph_node is GraphNode:
+			continue
+
+		var node = graph_node.node
+		buffer.append('title: %s' % node.title)
+		buffer.append('tags: ')
+		buffer.append('colorID: ')
+		buffer.append('position: %d, %d' % [node.position.x, node.position.y])
+		buffer.append('---')
+		buffer.append(node.body)
+		buffer.append('===')
+
+	return PoolStringArray(buffer).join('\n')
+
+func save_as(file_path = null):
+	if not file_path:
+		$FileDialog.mode = $FileDialog.MODE_SAVE_FILE
+		# TODO: Set up path based on context (Godot editor, standalone or web)
+		$FileDialog.popup_centered()
+		file_path = yield($FileDialog, 'file_selected')
+
+		if not file_path:
+			return
+	
+	var file = File.new()
+	file.open(file_path, File.WRITE)
+	file.store_string(serialize_to_file())
+	file.close()
+	print('saved file!')
+
+func open():
+	$FileDialog.mode = $FileDialog.MODE_OPEN_FILE
+	# TODO: Set up path based on context (Godot editor, standalone or web)
+	$FileDialog.popup_centered()
+	path = yield($FileDialog, 'file_selected')
+	if not path:
+		return
+
+	for node in $GraphEdit.get_children():
+		if node is GraphNode:
+			$GraphEdit.remove_child(node)
+			node.queue_free()
+
+	yield(get_tree(), 'idle_frame')
+	build_nodes()
+
+func new():
+	# TODO: add dialog for maybe saving existing file
+	
+	for node in $GraphEdit.get_children():
+		if node is GraphNode:
+			$GraphEdit.remove_child(node)
+			node.queue_free()
+
+	path = null
+
+func _on_menu_pressed(index, node):
+	match(node.get_item_text(index)):
+		'New':
+			new()
+		'Save':
+			save_as(path)
+		'Save as...':
+			save_as()
+		'Open':
+			open()
+
+func _on_graph_node_input(event, graph_node, node):
+	if event is InputEventMouseButton \
+			and event.doubleclick and event.button_index == BUTTON_LEFT:
+		$HBoxContainer/Editor.open_node(graph_node, node)
+		accept_event()

addons/Wol/editor/WolGraphNode.gd

@@ -0,0 +1,46 @@
+tool
+extends GraphNode
+
+const Compiler = preload('res://addons/Wol/core/compiler/Compiler.gd')
+
+var node setget set_node
+
+onready var text_edit = $TextEdit
+
+func _ready():
+	connect('offset_changed', self, '_on_offset_changed')
+	text_edit.connect('text_changed', self, '_on_text_changed')
+	$TextDebounce.connect('timeout', self, '_on_debounce')
+
+func _on_text_changed():
+	$TextDebounce.start(.3)
+
+func _on_debounce():
+	text_edit.get_node('ErrorGutter').hide()
+	node.body = text_edit.text
+	compile()
+
+func _on_offset_changed():
+	node.position = offset
+
+func _on_error(message, _line_number, _column):
+	var error_gutter = text_edit.get_node('ErrorGutter')
+	error_gutter.show()
+	error_gutter.text = message
+
+	# TODO: Highlight line based on line number and column
+
+func set_node(_node):
+	node = _node
+	title = node.title
+	text_edit.text = node.body
+	text_edit.clear_undo_history()
+	offset = node.position
+
+	compile()
+
+func compile():
+	var text = '---\n%s\n===' % text_edit.text
+	var compiler = Compiler.new(null, text, true)
+	compiler.connect('error', self, '_on_error')
+	compiler.compile()

addons/Wol/plugin.gd

@@ -1,6 +1,10 @@
 tool
 extends EditorPlugin
 
+const WolEditor = preload('res://addons/Wol/editor/WolEditor.tscn')
+
+var wol_editor_instance
+
 func _enter_tree():
 	add_custom_type(
 		'Wol',
@@ -9,5 +13,27 @@ func _enter_tree():
 		load('res://addons/Wol/icon-white.svg')
 	)
 
+	wol_editor_instance = WolEditor.instance()
+	get_editor_interface().get_editor_viewport().add_child(wol_editor_instance)
+
+	make_visible(false)
+
+func make_visible(visible):
+	if wol_editor_instance:
+		wol_editor_instance.visible = visible
+
 func _exit_tree():
 	remove_custom_type('Wol')
+
+	if wol_editor_instance:
+		wol_editor_instance.queue_free()
+
+func has_main_screen():
+	return true
+
+func get_plugin_name():
+	return 'Wol'
+
+func get_plugin_icon():
+	print(get_editor_interface().get_base_control().get_icon('Node', 'EditorIcons'))
+	return get_editor_interface().get_base_control().get_icon('Node', 'EditorIcons')

dialogue.yarn

@@ -1,13 +1,13 @@
 title: Start
 tags: 
-colorID: 0
+colorID: 
 position: 0, 0
 ---
 <<a_custom_command>>
 <<command_with multiple arguments>>
 
 // remove "to" to trigger error
-<<set $direction to 'that'>>
+<<set $direction to "that">>
 <<set $one to 1>>
 
 // Implement inline expressions
@@ -18,22 +18,22 @@ Narrator: Do you know you've been here {visit_count()} times?
 You: Did you know one + one equals {$one + $one}?
 Narrator: You wanna go somewhere?
 
- -> Go to the store
+-> Go to the store
     [[TheStore]]
-// -> Wait, how many times have I been to the store?
+-> How much did I visit the store?
-//       Narrator: You've been to the store {visit_count('TheStore')} times.
+    Narrator: You've been to the store { visit_count("TheStore") } times.
-//       [[Start]]
+    [[Start]]
 -> Lets stay here and talk
     [[Talk]]
 ===
 title: TheStore
 tags: 
-colorID: 0
+colorID: 
-position: 0, 200
+position: 400, 200
 ---
 Guy: Hey what's up I need your help can you come here?
 You: Well I can't I'm buying clothes.
-All right well hurry up and come over here.
+Guy: All right well hurry up and come over here.
 You: I can't find them.
 Guy: What do you mean you can't find them?
 You: I can't find them there's only soup.
@@ -58,8 +58,8 @@ You: FUCK YOU!
 ===
 title: Talk
 tags: 
-colorID: 0
+colorID: 
-position: 0, 400
+position: 800, 400
 ---
 Narrator: So how are you really?
 You: I'm good!

project.godot

@@ -24,6 +24,11 @@ gdscript/warnings/return_value_discarded=false
 
 enabled=PoolStringArray( "res://addons/Wol/plugin.cfg" )
 
+[network]
+
+limits/debugger_stdout/max_chars_per_second=8096
+limits/debugger_stdout/max_messages_per_frame=200
+
 [physics]
 
 common/enable_pause_aware_picking=true