mirror of
https://codeberg.org/StreamGraph/StreamGraph.git
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52 lines
1.2 KiB
GDScript
52 lines
1.2 KiB
GDScript
# (c) 2023-present Eroax
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# (c) 2023-present Yagich
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# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
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extends DeckNode
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var expr = Expression.new()
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func _init():
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name = "Expression"
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node_type = name.to_snake_case()
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description = "A node returning the result of a mathematical expression."
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category = "general"
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props_to_serialize = []
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# TODO: order of ports is changed
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# due to https://github.com/godotengine/godot/issues/85558
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# when it's fixed, switch it back
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add_input_port(
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DeckType.Types.DICTIONARY,
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"Expression Input"
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)
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add_output_port(
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DeckType.Types.ANY,
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"Expression Text",
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"codeblock"
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)
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func _value_request(_from_port : int) -> Variant:
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var text = get_output_ports()[0].value_callback.call()
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var err = expr.parse(text, ["deck_var", "input"])
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if err != OK:
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DeckHolder.logger.log_node("Expression parse failed: %s" % err, Logger.LogType.ERROR)
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printerr(err)
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return null
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var res = expr.execute([_belonging_to.variable_stack, request_value(0)])
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if expr.has_execute_failed():
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DeckHolder.logger.log_node("Expression Execution Failed: %s" % text, Logger.LogType.ERROR)
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return null
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return res
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