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62 lines
1.1 KiB
GDScript
62 lines
1.1 KiB
GDScript
extends Node
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# This closesly follows the source provided in the lectures.
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# Later on after the lectures are complete or when I deem
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# Necessary there will be heavy refactors.
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class SyntaxNode:
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var Type : String
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var Value : int
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func Dictionary():
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var result = \
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{
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Type = self.Type,
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Value = self.Value
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}
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return result
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class LetterParser:
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var Str : String
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# NumericLiteral
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# : NUMBER
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# ;
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#
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func NumericLiteral():
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var \
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node = SyntaxNode.new()
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node.Type = "NumericLiteral"
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node.Value = int(self.Str)
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return node
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# Parses the text program description into an AST.
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func Parse(programDescription):
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self.Str = programDescription
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return NumericLiteral()
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var ProgramDescription = "7"
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var LParser = LetterParser.new()
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# Note: _ready is being used for Program func of the lectures.
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# Main Entry point.
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#
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# Program
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# : NumericLiteral
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# ;
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#
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func _ready():
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var ast = LParser.Parse(ProgramDescription)
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print(to_json(ast.Dictionary()))
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# Called every frame. 'delta' is the elapsed time since the previous frame.
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#func _process(delta):
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# pass
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