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Contents
module GraphQL
class Schema
# Stores `{ name => type }` pairs for a given schema.
# It behaves like a hash except for a couple things:
# - if you use `[key]` and that key isn't defined, 💥!
# - if you try to define the same key twice, 💥!
#
# If you want a type, but want to handle the undefined case, use {#fetch}.
class TypeMap
extend Forwardable
def_delegators :@storage, :key?, :keys, :values
def initialize
@storage = {}
end
def [](key)
@storage[key] || raise("No type found for '#{key}'")
end
def []=(key, value)
if @storage.key?(key)
raise("Duplicate type definition found for name '#{key}'")
else
@storage[key] = value
end
end
def fetch(key, fallback_value)
@storage.key?(key) ? @storage[key] : fallback_value
end
end
end
end
Version data entries
20 entries across 20 versions & 1 rubygems