37 lines
1.2 KiB
Ruby
37 lines
1.2 KiB
Ruby
# frozen_string_literal: true
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module Gitlab
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module Ci
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module Pipeline
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module Expression
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module Lexeme
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class Operator < Lexeme::Base
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# This operator class is design to handle single operators that take two
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# arguments. Expression::Parser was originally designed to read infix operators,
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# and so the two operands are called "left" and "right" here. If we wish to
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# implement an Operator that takes a greater or lesser number of arguments, a
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# structural change or additional Operator superclass will likely be needed.
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OperatorError = Class.new(Expression::ExpressionError)
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def initialize(left, right)
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raise OperatorError, 'Invalid left operand' unless left.respond_to? :evaluate
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raise OperatorError, 'Invalid right operand' unless right.respond_to? :evaluate
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@left = left
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@right = right
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end
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def self.type
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:operator
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end
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def self.precedence
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raise NotImplementedError
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end
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end
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end
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end
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end
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end
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end
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