Creeper Lv
37 lines
453 B
Plaintext
37 lines
453 B
Plaintext
syntax_ids:
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add_expr
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sub_expr
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mul_expr
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div_expr
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number_expr
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group_expr
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term
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expr
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rules:
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expr
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: expr plus term
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=> new_node add_expr $0 $1 $2
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: expr minus term
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=> new_node sub_expr $0 $1 $2
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: term
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=> new_node expr $0
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;
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term
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: term multiply factor
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=> new_node mul_expr $0 $1 $2
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: term divide factor
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=> new_node div_expr $0 $1 $2
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: factor
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=> new_node term $0
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;
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factor
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: number
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=> new_node number_expr $0
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: lparen expr rparen
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=> new_node group_expr $1
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;
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