class Rubocop::Cop::Lint::Void
This cop checks for operators, variables and literals used in void context.
Constants
- LITERALS
- LIT_MSG
- OPS
- OP_MSG
- VARS
- VAR_MSG
Public Instance Methods
on_begin(node)
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Calls superclass method
# File lib/rubocop/cop/lint/void.rb, line 18 def on_begin(node) expressions = *node expressions[0...-1].each do |expr| check_for_void_op(expr) check_for_literal(expr) check_for_var(expr) end super end
Private Instance Methods
check_for_literal(node)
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# File lib/rubocop/cop/lint/void.rb, line 49 def check_for_literal(node) if LITERALS.include?(node.type) add_offence(:warning, node.loc.expression, sprintf(LIT_MSG, node.loc.expression.source)) end end
check_for_var(node)
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# File lib/rubocop/cop/lint/void.rb, line 42 def check_for_var(node) if VARS.include?(node.type) add_offence(:warning, node.loc.name, sprintf(VAR_MSG, node.loc.name.source)) end end
check_for_void_op(node)
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# File lib/rubocop/cop/lint/void.rb, line 32 def check_for_void_op(node) return unless node.type == :send op = node.loc.selector.source if OPS.include?(op) add_offence(:warning, node.loc.selector, sprintf(OP_MSG, op)) end end