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Contents
require 'byebug/command'
require 'byebug/helpers/parse'
module Byebug
#
# Implements conditions on breakpoints.
#
# Adds the ability to stop on breakpoints only under certain conditions.
#
class ConditionCommand < Command
include Helpers::ParseHelper
self.allow_in_post_mortem = true
def self.regexp
/^\s* cond(?:ition)? (?:\s+(\d+)(?:\s+(.*))?)? \s*$/x
end
def self.description
<<-EOD
cond[ition] <n>[ expr]
#{short_description}
Specify breakpoint number <n> to break only if <expr> is true. <n> is
an integer and <expr> is an expression to be evaluated whenever
breakpoint <n> is reached. If no expression is specified, the condition
is removed.
EOD
end
def self.short_description
'Sets conditions on breakpoints'
end
def execute
return puts(help) unless @match[1]
breakpoints = Byebug.breakpoints.sort_by(&:id)
return errmsg(pr('condition.errors.no_breakpoints')) if breakpoints.empty?
pos, err = get_int(@match[1], 'Condition', 1)
return errmsg(err) if err
breakpoint = breakpoints.find { |b| b.id == pos }
return errmsg(pr('break.errors.no_breakpoint')) unless breakpoint
unless syntax_valid?(@match[2])
return errmsg(pr('break.errors.not_changed', expr: @match[2]))
end
breakpoint.expr = @match[2]
end
end
end
Version data entries
26 entries across 25 versions & 3 rubygems