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rudimentary support for class sourcecode with show-source

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* renamed show-method to show-source (show-method is now an alias)
* This is very slow, it can be sped up significantly by getting rid of the mini pry instance and writing a helper method
This commit is contained in:
John Mair 2012-04-10 11:39:56 +12:00
parent 663be7be29
commit ff8efd035b
1 changed files with 60 additions and 12 deletions
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72
lib/pry/default_commands/introspection.rb
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@ -77,18 +77,19 @@ class Pry
end
end
create_command "show-method" do
description "Show the source for METH. Aliases: $, show-source"
create_command "show-source" do
description "Show the source for METH or CLASS. Aliases: $, show-method"
banner <<-BANNER
Usage: show-method [OPTIONS] [METH]
Usage: show-method [OPTIONS] [METH|CLASS]
Aliases: $, show-source
Show the source for method METH. Tries instance methods first and then methods by default.
Show the source for method METH or CLASS. Tries instance methods first and then methods by default.
e.g: `show-method hello_method`
e.g: `show-method -m hello_method`
e.g: `show-method Pry#rep`
e.g: `show-source hello_method`
e.g: `show-source -m hello_method`
e.g: `show-source Pry#rep`
e.g: `show-source Pry`
https://github.com/pry/pry/wiki/Source-browsing#wiki-Show_method
BANNER
@ -104,7 +105,31 @@ class Pry
opt.on :f, :flood, "Do not use a pager to view text longer than one screen."
end
def process
def module?(name)
begin
kind = target.eval("defined?(#{name})")
rescue Pry::RescuableException
end
!!(kind == "constant" && target.eval(name).is_a?(Module))
end
def method?
!!method_object
rescue CommandError
false
end
def process(name)
if module?(name)
code = process_module(name)
else method?
code = process_method
end
render_output(code, opts)
end
def process_method
raise CommandError, "Could not find method source" unless method_object.source
output.puts make_header(method_object)
@ -112,10 +137,33 @@ class Pry
output.puts "#{text.bold("Visibility:")} #{method_object.visibility}"
output.puts
code = Code.from_method(method_object, start_line).
Code.from_method(method_object, start_line).
with_line_numbers(use_line_numbers?)
end
render_output(code, opts)
def find_method_source_location(klass)
ims = Pry::Method.all_from_class(klass) + Pry::Method.all_from_obj(klass)
ims.each do |m|
break m.source_location if m.source_location
end
end
def process_module(name)
klass = target.eval(name)
mod_type_string = klass.class.to_s.downcase
file, line = find_method_source_location(klass)
raise Pry::CommandError, "Can't find #{mod_type_string} code" if !file.is_a?(String)
immediate_class_name = name.split(/::/).last
class_regex = /#{mod_type_string}\s*(\w*)(::)?#{immediate_class_name}/
all_lines = File.readlines(file)
search_lines = all_lines[0..(line - 2)]
idx = search_lines.rindex { |v| class_regex =~ v }
code = Pry.new(:input => StringIO.new(all_lines[idx..-1].join), :prompt => proc {""}, :hooks => Pry::Hooks.new).r
Code.new(code).to_s
end
def use_line_numbers?
@ -131,8 +179,8 @@ class Pry
end
end
alias_command "show-source", "show-method"
alias_command "$", "show-method"
alias_command "show-method", "show-source"
alias_command "$", "show-source"
command "show-command", "Show the source for CMD." do |*args|
target = target()