1 files changed, 21 insertions, 0 deletions
diff --git a/lib/rubygems/resolver/api_set/gem_parser.rb b/lib/rubygems/resolver/api_set/gem_parser.rb
new file mode 100644
index 0000000000..4d827f4980
--- /dev/null
+++ b/lib/rubygems/resolver/api_set/gem_parser.rb
@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+class Gem::Resolver::APISet::GemParser
+  def parse(line)
+    version_and_platform, rest = line.split(" ", 2)
+    version, platform = version_and_platform.split("-", 2)
+    dependencies, requirements = rest.split("|", 2).map! {|s| s.split(",") } if rest
+    dependencies = dependencies ? dependencies.map! {|d| parse_dependency(d) } : []
+    requirements = requirements ? requirements.map! {|d| parse_dependency(d) } : []
+    [version, platform, dependencies, requirements]
+  end
+
+  private
+
+  def parse_dependency(string)
+    dependency = string.split(":", 2)
+    dependency[-1] = dependency[-1].split("&") if dependency.size > 1
+    dependency[0] = -dependency[0]
+    dependency
+  end
+end