mvdan.cc
1// Copyright 2018 The CUE Authors
2//
3// Licensed under the Apache License, Version 2.0 (the "License");
4// you may not use this file except in compliance with the License.
5// You may obtain a copy of the License at
6//
7// http://www.apache.org/licenses/LICENSE-2.0
8//
9// Unless required by applicable law or agreed to in writing, software
10// distributed under the License is distributed on an "AS IS" BASIS,
11// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12// See the License for the specific language governing permissions and
13// limitations under the License.
14
15// Package pkg defines CUE standard packages.
16//
17// Many of the standard packages are modeled after and generated from the Go
18// core packages. The types, values, and functions are defined as their Go
19// equivalence and mapped to CUE types.
20//
21// Beware that some packages are defined in lesser-precision types than are
22// typically used in CUE and thus may lead to loss of precision.
23//
24// All packages except those defined in the tool subdirectory are hermetic,
25// that is depending only on a known set of inputs, and therefore can guarantee
26// reproducible results. That is:
27//
28// - no reading of files contents
29// - no querying of the file system of any kind
30// - no communication on the network
31// - no information about the type of environment
32// - only reproducible random generators
33//
34// Hermetic configurations allow for fast and advanced analysis that otherwise
35// would not be possible or practical. The cue "cmd" command can be used to mix
36// in non-hermetic influences into configurations by using packages defined
37// in the tool subdirectory.
38package pkg
39
40//go:generate go run gen.go