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# frozen_string_literal: true
module Bundler
class Index
include Enumerable
def self.build
i = new
yield i
i
end
attr_reader :specs, :duplicates, :sources
protected :specs, :duplicates
RUBY = "ruby"
NULL = "\0"
def initialize
@sources = []
@cache = {}
@specs = {}
@duplicates = {}
end
def initialize_copy(o)
@sources = o.sources.dup
@cache = {}
@specs = {}
@duplicates = {}
o.specs.each do |name, hash|
@specs[name] = hash.dup
end
o.duplicates.each do |name, array|
@duplicates[name] = array.dup
end
end
def inspect
"#<#{self.class}:0x#{object_id} sources=#{sources.map(&:inspect)} specs.size=#{specs.size}>"
end
def empty?
each { return false }
true
end
def search_all(name, &blk)
return enum_for(:search_all, name) unless blk
specs_by_name(name).each(&blk)
@duplicates[name]&.each(&blk)
@sources.each {|source| source.search_all(name, &blk) }
end
# Search this index's specs, and any source indexes that this index knows
# about, returning all of the results.
def search(query)
results = local_search(query)
return results unless @sources.any?
@sources.each do |source|
results = safe_concat(results, source.search(query))
end
results.uniq!(&:full_name) unless results.empty? # avoid modifying frozen EMPTY_SEARCH
results
end
alias_method :[], :search
def local_search(query)
case query
when Gem::Specification, RemoteSpecification, LazySpecification, EndpointSpecification then search_by_spec(query)
when String then specs_by_name(query)
when Array then specs_by_name_and_version(*query)
else
raise "You can't search for a #{query.inspect}."
end
end
def add(spec)
(@specs[spec.name] ||= {}).store(spec.full_name, spec)
end
alias_method :<<, :add
def each(&blk)
return enum_for(:each) unless blk
specs.values.each do |spec_sets|
spec_sets.values.each(&blk)
end
sources.each {|s| s.each(&blk) }
self
end
def spec_names
names = specs.keys + sources.map(&:spec_names)
names.uniq!
names
end
def unmet_dependency_names
dependency_names.select do |name|
search(name).empty?
end
end
def dependency_names
names = []
each do |spec|
spec.dependencies.each do |dep|
next if dep.type == :development
names << dep.name
end
end
names.uniq
end
# Combines indexes proritizing existing specs, like `Hash#reverse_merge!`
# Duplicate specs found in `other` are stored in `@duplicates`.
def use(other)
return unless other
other.each do |spec|
exist?(spec) ? add_duplicate(spec) : add(spec)
end
self
end
# Combines indexes proritizing specs from `other`, like `Hash#merge!`
# Duplicate specs found in `self` are saved in `@duplicates`.
def merge!(other)
return unless other
other.each do |spec|
if existing = find_by_spec(spec)
add_duplicate(existing)
end
add spec
end
self
end
def size
@sources.inject(@specs.size) do |size, source|
size += source.size
end
end
# Whether all the specs in self are in other
# TODO: rename to #include?
def ==(other)
all? do |spec|
other_spec = other[spec].first
other_spec && dependencies_eql?(spec, other_spec) && spec.source == other_spec.source
end
end
def dependencies_eql?(spec, other_spec)
deps = spec.dependencies.select {|d| d.type != :development }
other_deps = other_spec.dependencies.select {|d| d.type != :development }
deps.sort == other_deps.sort
end
def add_source(index)
raise ArgumentError, "Source must be an index, not #{index.class}" unless index.is_a?(Index)
@sources << index
@sources.uniq! # need to use uniq! here instead of checking for the item before adding
end
private
def safe_concat(a, b)
return a if b.empty?
return b if a.empty?
a.concat(b)
end
def add_duplicate(spec)
(@duplicates[spec.name] ||= []) << spec
end
def specs_by_name_and_version(name, version)
results = @specs[name]&.values
return EMPTY_SEARCH unless results
results.select! {|spec| spec.version == version }
results
end
def specs_by_name(name)
@specs[name]&.values || EMPTY_SEARCH
end
EMPTY_SEARCH = [].freeze
def search_by_spec(spec)
spec = find_by_spec(spec)
spec ? [spec] : EMPTY_SEARCH
end
def find_by_spec(spec)
@specs[spec.name]&.fetch(spec.full_name, nil)
end
def exist?(spec)
@specs[spec.name]&.key?(spec.full_name)
end
end
end
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