miggor-StreamGraph/classes/deck/nodes/expression_node.gd
2023-12-08 14:36:19 +03:00

48 lines
908 B
GDScript

extends DeckNode
var expr = Expression.new()
func _init():
name = "Expression"
node_type = name.to_snake_case()
description = "A Node holding a block of executable GDScript code."
category = "general"
props_to_serialize = []
# TODO: order of ports is changed
# due to https://github.com/godotengine/godot/issues/85558
# when it's fixed, switch it back
add_input_port(
DeckType.Types.DICTIONARY,
"Expression Input"
)
add_output_port(
DeckType.Types.ANY,
"Expression Text",
"codeblock"
)
func _value_request(_from_port : int) -> Variant:
var text = get_output_ports()[0].value_callback.call()
var err = expr.parse(text, ["deck_var", "input"])
if err != OK:
printerr(err)
return null
var res = expr.execute([_belonging_to.variable_stack, request_value(0)])
if expr.has_execute_failed():
printerr("Expression Execution Failed: ", text)
return null
return res