class RubbyCop::Cop::Lint::Void
This cop checks for operators, variables and literals used in void context.
@example
# bad def some_method some_num * 10 do_something end
@example
# bad def some_method some_var do_something end
@example
# good def some_method do_something some_num * 10 end
@example
# good def some_method do_something some_var end
Constants
- DEFINED_MSG
- LIT_MSG
- OPS
- OP_MSG
- SELF_MSG
- VAR_MSG
Public Instance Methods
on_begin(node)
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# File lib/rubbycop/cop/lint/void.rb, line 53 def on_begin(node) check_begin(node) end
on_kwbegin(node)
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# File lib/rubbycop/cop/lint/void.rb, line 57 def on_kwbegin(node) check_begin(node) end
Private Instance Methods
check_begin(node)
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# File lib/rubbycop/cop/lint/void.rb, line 63 def check_begin(node) expressions = *node expressions.drop_last(1).each do |expr| check_for_void_op(expr) check_for_literal(expr) check_for_var(expr) check_for_self(expr) check_for_defined(expr) end end
check_for_defined(node)
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# File lib/rubbycop/cop/lint/void.rb, line 100 def check_for_defined(node) return unless node.defined_type? add_offense(node, :expression, format(DEFINED_MSG, node.source)) end
check_for_literal(node)
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# File lib/rubbycop/cop/lint/void.rb, line 88 def check_for_literal(node) return if !node.literal? || node.xstr_type? add_offense(node, :expression, format(LIT_MSG, node.source)) end
check_for_self(node)
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# File lib/rubbycop/cop/lint/void.rb, line 94 def check_for_self(node) return unless node.self_type? add_offense(node, :expression, SELF_MSG) end
check_for_var(node)
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# File lib/rubbycop/cop/lint/void.rb, line 83 def check_for_var(node) return unless node.variable? || node.const_type? add_offense(node, :name, format(VAR_MSG, node.loc.name.source)) end
check_for_void_op(node)
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# File lib/rubbycop/cop/lint/void.rb, line 75 def check_for_void_op(node) return unless node.send_type? && node.loc.selector op = node.loc.selector.source add_offense(node, :selector, format(OP_MSG, op)) if OPS.include?(op) end