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Use Method#parameters introduced in Ruby 1.9.2

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Mike Dvorkin 2010-11-05 19:45:24 -07:00
parent 8f94cef98f
commit 57b215ff10
2 changed files with 102 additions and 13 deletions
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20
lib/ap/awesome_print.rb
View file

@ -246,11 +246,21 @@ class AwesomePrint
# Return [ name, arguments, owner ] tuple for a given method.
#------------------------------------------------------------------------------
def method_tuple(method)
# arity: For Ruby methods that take a variable number of arguments, returns -N - 1,
# where N is the number of required arguments. For methods written in C, returns -1
# if the call takes a variable number of arguments.
args = method.arity.abs.times.map { |i| "arg#{i+1}" }
args[-1] = "*#{args[-1]}" if method.arity < 0
if method.respond_to?(:parameters) # Ruby 1.9.2+
# See http://ruby.runpaint.org/methods#method-objects-parameters
args = method.parameters.inject([]) do |arr, (type, name)|
name ||= (type == :block ? 'block' : "arg#{arr.size + 1}")
arr << case type
when :req then name.to_s
when :opt, :rest then "*#{name}"
when :block then "&#{name}"
else '?'
end
end
else # See http://ruby-doc.org/core/classes/Method.html#M001902
args = method.arity.abs.times.map { |i| "arg#{i+1}" }
args[-1] = "*#{args[-1]}" if method.arity < 0
end
if method.to_s =~ /(Unbound)*Method: (.*?)[#\.]/
owner = "#{$2}#{$1 ? '(unbound)' : ''}".gsub('(', ' (')

95
spec/methods_spec.rb
View file

@ -68,7 +68,11 @@ describe "Single method" do
def world(a,b); end
end
method = Hello.instance_method(:world)
method.ai.should == "\e[1;33mHello (unbound)\e[0m#\e[1;35mworld\e[0m\e[0;37m(arg1, arg2)\e[0m"
if RUBY_VERSION < '1.9.2'
method.ai.should == "\e[1;33mHello (unbound)\e[0m#\e[1;35mworld\e[0m\e[0;37m(arg1, arg2)\e[0m"
else
method.ai.should == "\e[1;33mHello (unbound)\e[0m#\e[1;35mworld\e[0m\e[0;37m(a, b)\e[0m"
end
end
end
@ -128,7 +132,11 @@ describe "Object methods" do
protected
def m3(a,b); end
end
Hello.new.protected_methods.ai(:plain => true, :index => false).should == "[\n m3(arg1, arg2) Hello\n]"
if RUBY_VERSION < '1.9.2'
Hello.new.protected_methods.ai(:plain => true, :index => false).should == "[\n m3(arg1, arg2) Hello\n]"
else
Hello.new.protected_methods.ai(:plain => true, :index => false).should == "[\n m3(a, b) Hello\n]"
end
end
end
@ -150,7 +158,11 @@ describe "Object methods" do
def m3(a,b); end
end
out = Hello.new.private_methods.ai(:plain => true).split("\n").grep(/m\d/)
out.first.should =~ /^\s+\[\d+\]\s+m3\(arg1, arg2\)\s+Hello$/
if RUBY_VERSION < '1.9.2'
out.first.should =~ /^\s+\[\d+\]\s+m3\(arg1, arg2\)\s+Hello$/
else
out.first.should =~ /^\s+\[\d+\]\s+m3\(a, b\)\s+Hello$/
end
end
end
@ -172,7 +184,11 @@ describe "Object methods" do
def self.m3(a,b); end
end
out = Hello.singleton_methods.ai(:plain => true, :index => false).split("\n").grep(/m\d/)
out.first.should =~ /^\s+m3\(arg1, arg2\)\s+Hello$/
if RUBY_VERSION < '1.9.2'
out.first.should =~ /^\s+m3\(arg1, arg2\)\s+Hello$/
else
out.first.should =~ /^\s+m3\(a, b\)\s+Hello$/
end
end
end
end
@ -198,7 +214,11 @@ describe "Class methods" do
def m3(a,b); end
end
out = Hello.instance_methods.ai(:plain => true, :index => false).split("\n").grep(/m\d/)
out.first.should =~ /^\s+m3\(arg1, arg2\)\s+Hello\s\(unbound\)$/
if RUBY_VERSION < '1.9.2'
out.first.should =~ /^\s+m3\(arg1, arg2\)\s+Hello\s\(unbound\)$/
else
out.first.should =~ /^\s+m3\(a, b\)\s+Hello\s\(unbound\)$/
end
end
end
@ -218,7 +238,11 @@ describe "Class methods" do
def m3(a,b); end
end
out = Hello.public_instance_methods.ai(:plain => true, :index => false).split("\n").grep(/m\d/)
out.first.should =~ /^\s+m3\(arg1, arg2\)\s+Hello\s\(unbound\)$/
if RUBY_VERSION < '1.9.2'
out.first.should =~ /^\s+m3\(arg1, arg2\)\s+Hello\s\(unbound\)$/
else
out.first.should =~ /^\s+m3\(a, b\)\s+Hello\s\(unbound\)$/
end
end
end
@ -240,7 +264,11 @@ describe "Class methods" do
def m3(a,b); end
end
out = Hello.protected_instance_methods.ai(:plain => true, :index => false).split("\n").grep(/m\d/)
out.first.should =~ /^\s+m3\(arg1, arg2\)\s+Hello\s\(unbound\)$/
if RUBY_VERSION < '1.9.2'
out.first.should =~ /^\s+m3\(arg1, arg2\)\s+Hello\s\(unbound\)$/
else
out.first.should =~ /^\s+m3\(a, b\)\s+Hello\s\(unbound\)$/
end
end
end
@ -262,8 +290,59 @@ describe "Class methods" do
def m3(a,b); end
end
out = Hello.private_instance_methods.ai(:plain => true, :index => false).split("\n").grep(/m\d/)
out.first.should =~ /^\s+m3\(arg1, arg2\)\s+Hello\s\(unbound\)$/
if RUBY_VERSION < '1.9.2'
out.first.should =~ /^\s+m3\(arg1, arg2\)\s+Hello\s\(unbound\)$/
else
out.first.should =~ /^\s+m3\(a, b\)\s+Hello\s\(unbound\)$/
end
end
end
end
if RUBY_VERSION >= '1.9.2'
describe "Ruby 1.9.2+ Method#parameters" do
after do
Object.instance_eval{ remove_const :Hello } if defined?(Hello)
end
it "()" do
class Hello
def m1; end
end
out = Hello.new.methods.ai(:plain => true).split("\n").grep(/m1/)
out.first.should =~ /^\s+\[\s*\d+\]\s+m1\(\)\s+Hello$/
end
it ":req" do
class Hello
def m1(a, b, c); end
end
out = Hello.new.methods.ai(:plain => true).split("\n").grep(/m1/)
out.first.should =~ /^\s+\[\s*\d+\]\s+m1\(a, b, c\)\s+Hello$/
end
it ":opt" do
class Hello
def m1(a, b = 1, c = 2); end # m1(a, *b, *c)
end
out = Hello.new.methods.ai(:plain => true).split("\n").grep(/m1/)
out.first.should =~ /^\s+\[\s*\d+\]\s+m1\(a, \*b, \*c\)\s+Hello$/
end
it ":rest" do
class Hello
def m1(*a); end # m1(*a)
end
out = Hello.new.methods.ai(:plain => true).split("\n").grep(/m1/)
out.first.should =~ /^\s+\[\s*\d+\]\s+m1\(\*a\)\s+Hello$/
end
it ":block" do
class Hello
def m1(a, b = nil, &blk); end # m1(a, *b, &blk)
end
out = Hello.new.methods.ai(:plain => true).split("\n").grep(/m1/)
out.first.should =~ /^\s+\[\s*\d+\]\s+m1\(a, \*b, &blk\)\s+Hello$/
end
end
end