Class: Byebug::BreakCommand
Overview
Implements byebug “break” command.
Constant Summary
Constants inherited
from Command
Command::DEF_OPTIONS
Class Method Summary
collapse
Instance Method Summary
collapse
Methods inherited from Command
commands, find, format_subcmd, format_subcmds, help, inherited, #initialize, load_commands, #match, method_missing, options, register_setting_get, register_setting_set, register_setting_var, settings, settings_map
Class Method Details
.description ⇒ Object
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# File 'lib/byebug/commands/breakpoints.rb', line 97
def description
%{b[reak] file:line [if expr]
b[reak] class(.|#)method [if expr]
Set breakpoint to some position, (optionally) if expr == true}
end
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.names ⇒ Object
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# File 'lib/byebug/commands/breakpoints.rb', line 93
def names
%w(break)
end
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Instance Method Details
#execute ⇒ Object
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# File 'lib/byebug/commands/breakpoints.rb', line 16
def execute
return print BreakCommand.help(nil) if BreakCommand.names.include?(@match[0])
if @match[1]
line, _, _, expr = @match.captures
else
_, file, line, expr = @match.captures
end
if expr
if expr !~ /^\s*if\s+(.+)/
if file or line
errmsg "Expecting \"if\" in breakpoint condition; got: #{expr}.\n"
else
errmsg "Invalid breakpoint location: #{expr}.\n"
end
return
else
expr = $1
end
end
brkpt_filename = file
if file.nil?
unless @state.context
errmsg "We are not in a state that has an associated file.\n"
return
end
brkpt_filename = @state.file
if line.nil?
line = @state.line.to_s
end
elsif line !~ /^\d+$/
klass = debug_silent_eval(file)
if klass && klass.kind_of?(Module)
class_name = klass.name if klass
else
errmsg "Unknown class #{file}.\n"
throw :debug_error
end
end
if line =~ /^\d+$/
line = line.to_i
if LineCache.cache(brkpt_filename, Command.settings[:autoreload])
last_line = LineCache.size(brkpt_filename)
return errmsg "There are only #{last_line} lines in file " \
"#{brkpt_filename}\n" if line > last_line
return errmsg "Line #{line} is not a stopping point in file " \
"#{brkpt_filename}\n" unless
LineCache.trace_line_numbers(brkpt_filename).member?(line)
else
errmsg "No source file named #{brkpt_filename}\n"
return unless confirm("Set breakpoint anyway? (y/n) ")
end
return errmsg "We are not in a state we can add breakpoints.\n" unless
@state.context
b = Byebug.add_breakpoint brkpt_filename, line, expr
print "Created breakpoint #{b.id} at " \
"#{CommandProcessor.canonic_file(brkpt_filename)}:#{line.to_s}\n"
unless syntax_valid?(expr)
errmsg "Expression \"#{expr}\" syntactically incorrect; breakpoint" \
" disabled.\n"
b.enabled = false
end
else
method = line.intern
b = Byebug.add_breakpoint class_name, method, expr
print "Created breakpoint #{b.id} at #{class_name}::#{method.to_s}\n"
end
end
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#regexp ⇒ Object
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# File 'lib/byebug/commands/breakpoints.rb', line 7
def regexp
/ ^\s*
b(?:reak)?
(?: \s+ #{Position_regexp})? \s*
(?: \s+ (.*))? \s*
$
/x
end
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