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Versions: 10
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Stored size: 1.74 KB
Contents
grammar SQLHelpers
rule where_tree
where_condition_or_empty {
def eval
init_clause = where_condition.where_clause rescue false
(init_clause) ? build_where_tree(init_clause) : nil
end
def build_where_tree(init_clause)
clauses = []
clause = init_clause
while clause
parens = clause.OPEN_PARENS rescue false
if parens
clauses << build_where_tree(clause.where_clause)
break
end
clause_obj = false
begin
clause_obj = clause.clause1
rescue
clause_obj = clause if clause.one_column_name rescue false
end
if clause_obj
clauses << {
:column => clause_obj.one_column_name.eval,
:condition => clause_obj.joiner_or_null.condition_joiner.eval,
:value => clause_obj.joiner_or_null.primitive.eval
}
dc_joiner = clause.disjunction_or_conjunction_joiner.text_value rescue dc_joiner = false
clauses << dc_joiner if dc_joiner
clause = clause.clause2 rescue false
if !clause
clause = clause.where_clause rescue false
end
else
clause = clause.where_clause rescue false
end
end
clauses
end
}
end
rule where_condition_or_empty
SPACES where_condition {
def eval
where_condition.eval
end
}
/
EMPTY_STRING
end
rule limit_condition_or_empty
SPACE limit { def eval; limit.eval; end } / EMPTY_STRING
end
rule order_by_condition_or_empty
SPACE order_by { def eval; order_by.eval; end } / EMPTY_STRING
end
end
Version data entries
10 entries across 10 versions & 1 rubygems