19 lines
582 B
Ruby
19 lines
582 B
Ruby
module Parser
|
|
module Expression
|
|
include Parslet
|
|
|
|
rule(:simple_expression) { function_call | integer | string | name }
|
|
|
|
rule(:expression) { (while_do | conditional | operator_expression | function_call ) >> newline }
|
|
|
|
def delimited_expressions( delimit )
|
|
( (delimit.absent? >> expression).repeat(1)).as(:expressions) >> delimit
|
|
end
|
|
|
|
rule(:expressions_do) { delimited_expressions(keyword_do) }
|
|
rule(:expressions_else) { delimited_expressions(keyword_else) }
|
|
rule(:expressions_end) { delimited_expressions(keyword_end) }
|
|
|
|
end
|
|
end
|