21 lines
793 B
Ruby
21 lines
793 B
Ruby
module Parser
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module Control
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include Parslet
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rule(:conditional) do
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keyword_if >>
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(( (value_expression|operator_expression).as(:conditional) ) |
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left_parenthesis >> (operator_expression|value_expression).as(:conditional) >> right_parenthesis) >>
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newline >> expressions_else.as(:if_true) >> newline >> expressions_end.as(:if_false)
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end
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rule(:while_do) do
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keyword_while >> left_parenthesis >> (operator_expression|value_expression).as(:while_cond) >>
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right_parenthesis >> keyword_do >> newline >>
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expressions_end.as(:body)
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end
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rule(:simple_return) do
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keyword_return >> (operator_expression|value_expression).as(:return_expression)
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end
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end
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end
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