In Files
- irb/frame.rb
Parent
Namespace
- CLASS IRB::Frame::FrameOverflow
- CLASS IRB::Frame::FrameUnderflow
Class/Module Index
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- Binding
- IRB::Abort
- IRB::Canvas
- IRB::Color
- IRB::Color::SymbolState
- IRB::Context
- IRB::ContextExtender
- IRB::ExtendCommandBundle
- IRB::FileInputMethod
- IRB::Frame
- IRB::Frame::FrameOverflow
- IRB::Frame::FrameUnderflow
- IRB::History
- IRB::InputMethod
- IRB::Inspector
- IRB::Irb
- IRB::IrbLoader
- IRB::JobManager
- IRB::LoadAbort
- IRB::MethodExtender
- IRB::Notifier
- IRB::Notifier::AbstractNotifier
- IRB::Notifier::CompositeNotifier
- IRB::Notifier::ErrUndefinedNotifier
- IRB::Notifier::ErrUnrecognizedLevel
- IRB::Notifier::LeveledNotifier
- IRB::Notifier::NoMsgNotifier
- IRB::OutputMethod
- IRB::OutputMethod::NotImplementedError
- IRB::RDoc
- IRB::RDoc::RI
- IRB::ReadlineInputMethod
- IRB::ReidlineInputMethod
- IRB::Reline
- IRB::RubyModel
- IRB::StdioInputMethod
- IRB::StdioOutputMethod
- IRB::Vec
- IRB::WorkSpace
- Object
- XMP
- XMP::StringInputMethod
IRB::Frame
Constants
- CALL_STACK_OFFSET
Default number of frames offset
- INIT_STACK_TIMES
Default number of stack frames
Public Class Methods
bottom(n = 0)
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Convenience method for #bottom
# File irb/frame.rb, line 67
def Frame.bottom(n = 0)
@backtrace.bottom(n)
end
new()
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Creates a new stack frame
# File irb/frame.rb, line 32
def initialize
@frames = [TOPLEVEL_BINDING] * INIT_STACK_TIMES
end
sender()
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Returns the binding context of the caller from the last frame initialized
# File irb/frame.rb, line 77
def Frame.sender
eval "self", @backtrace.top
end
top(n = 0)
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Convenience method for #top
# File irb/frame.rb, line 72
def Frame.top(n = 0)
@backtrace.top(n)
end
Public Instance Methods
bottom(n = 0)
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Returns the n number of frames on the call stack from the
first frame initialized.
Raises FrameOverflow if there are no frames in the given stack range.
# File irb/frame.rb, line 60
def bottom(n = 0)
bind = @frames[n]
fail FrameOverflow unless bind
bind
end
top(n = 0)
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Returns the n number of frames on the call stack from the last
frame initialized.
Raises FrameUnderflow if there are no frames in the given stack range.
# File irb/frame.rb, line 50
def top(n = 0)
bind = @frames[-(n + CALL_STACK_OFFSET)]
fail FrameUnderflow unless bind
bind
end
trace_func(event, file, line, id, binding)
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Used by Kernel#set_trace_func to register each event in the call stack
# File irb/frame.rb, line 37
def trace_func(event, file, line, id, binding)
case event
when 'call', 'class'
@frames.push binding
when 'return', 'end'
@frames.pop
end
end