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7fe5f0a1d0
(https://github.com/ruby/irb/pull/971) It's essentially a combination of pushws and popws commands that are easier to use. Help message: ``` Usage: cd ([target]|..) IRB uses a stack of workspaces to keep track of context(s), with `pushws` and `popws` commands to manipulate the stack. The `cd` command is an attempt to simplify the operation and will be subject to change. When given: - an object, cd will use that object as the new context by pushing it onto the workspace stack. - "..", cd will leave the current context by popping the top workspace off the stack. - no arguments, cd will move to the top workspace on the stack by popping off all workspaces. Examples: cd Foo cd Foo.new cd @ivar cd .. cd ``` https://github.com/ruby/irb/commit/4a0e0e89b7
52 lines
1.6 KiB
Ruby
52 lines
1.6 KiB
Ruby
# frozen_string_literal: true
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module IRB
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module Command
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class CD < Base
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category "Workspace"
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description "Move into the given object or leave the current context."
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help_message(<<~HELP)
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Usage: cd ([target]|..)
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IRB uses a stack of workspaces to keep track of context(s), with `pushws` and `popws` commands to manipulate the stack.
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The `cd` command is an attempt to simplify the operation and will be subject to change.
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When given:
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- an object, cd will use that object as the new context by pushing it onto the workspace stack.
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- "..", cd will leave the current context by popping the top workspace off the stack.
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- no arguments, cd will move to the top workspace on the stack by popping off all workspaces.
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Examples:
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cd Foo
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cd Foo.new
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cd @ivar
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cd ..
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cd
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HELP
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def execute(arg)
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case arg
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when ".."
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irb_context.pop_workspace
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when ""
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# TODO: decide what workspace commands should be kept, and underlying APIs should look like,
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# and perhaps add a new API to clear the workspace stack.
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prev_workspace = irb_context.pop_workspace
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while prev_workspace
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prev_workspace = irb_context.pop_workspace
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end
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else
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begin
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obj = eval(arg, irb_context.workspace.binding)
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irb_context.push_workspace(obj)
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rescue StandardError => e
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warn "Error: #{e}"
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end
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end
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end
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end
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end
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end
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