mirror of
https://github.com/gonum/gonum.git
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03398562de
Ruleguard run with ruleguard -c=0 -rules ruleguard.rules.go ./... from https://github.com/dgryski/semgrep-go with the following rules inactivated to reduce noise: - unconvert for floating point values - oddcomparisons - floateq
667 lines
17 KiB
Go
667 lines
17 KiB
Go
// Copyright ©2014 The Gonum Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build ignore
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// +build ignore
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package main
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import (
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"bytes"
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"go/format"
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"log"
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"os"
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"strings"
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"text/template"
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"gonum.org/v1/gonum/unit"
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)
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type Unit struct {
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DimensionName string
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Receiver string
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PowerOffset int // from normal (for example, mass base unit is kg, not g)
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PrintString string // print string for the unit (kg for mass)
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ExtraConstant []Constant
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Name string
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TypeComment string // text to comment the type
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Dimensions []Dimension
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ErForm string // for Xxxer interface
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}
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type Dimension struct {
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Name string
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Power int
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}
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func (u Unit) Units() string {
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dims := make(unit.Dimensions)
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for _, d := range u.Dimensions {
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dims[dimOf[d.Name]] = d.Power
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}
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return dims.String()
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}
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const (
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AngleName string = "AngleDim"
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CurrentName string = "CurrentDim"
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LengthName string = "LengthDim"
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LuminousIntensityName string = "LuminousIntensityDim"
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MassName string = "MassDim"
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MoleName string = "MoleDim"
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TemperatureName string = "TemperatureDim"
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TimeName string = "TimeDim"
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)
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var dimOf = map[string]unit.Dimension{
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"AngleDim": unit.AngleDim,
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"CurrentDim": unit.CurrentDim,
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"LengthDim": unit.LengthDim,
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"LuminousIntensityDim": unit.LuminousIntensityDim,
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"MassDim": unit.MassDim,
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"MoleDim": unit.MoleDim,
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"TemperatureDim": unit.TemperatureDim,
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"TimeDim": unit.TimeDim,
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}
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type Constant struct {
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Name string
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Value string
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}
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type Prefix struct {
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Name string
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Power int
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}
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var Units = []Unit{
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// Base units.
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{
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DimensionName: "Dimless",
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Receiver: "d",
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TypeComment: "Dimless represents a dimensionless constant",
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Dimensions: []Dimension{},
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},
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{
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DimensionName: "Angle",
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Receiver: "a",
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PrintString: "rad",
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Name: "Rad",
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TypeComment: "Angle represents an angle in radians",
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Dimensions: []Dimension{
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{Name: AngleName, Power: 1},
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},
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},
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{
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DimensionName: "Current",
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Receiver: "i",
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PrintString: "A",
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Name: "Ampere",
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TypeComment: "Current represents a current in Amperes",
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Dimensions: []Dimension{
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{Name: CurrentName, Power: 1},
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},
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},
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{
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DimensionName: "Length",
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Receiver: "l",
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PrintString: "m",
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Name: "Metre",
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TypeComment: "Length represents a length in metres",
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Dimensions: []Dimension{
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{Name: LengthName, Power: 1},
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},
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},
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{
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DimensionName: "LuminousIntensity",
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Receiver: "j",
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PrintString: "cd",
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Name: "Candela",
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TypeComment: "Candela represents a luminous intensity in candela",
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Dimensions: []Dimension{
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{Name: LuminousIntensityName, Power: 1},
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},
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},
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{
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DimensionName: "Mass",
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Receiver: "m",
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PowerOffset: -3,
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PrintString: "kg",
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Name: "Gram",
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TypeComment: "Mass represents a mass in kilograms",
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ExtraConstant: []Constant{
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{Name: "Kilogram", Value: "Kilo * Gram"},
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},
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Dimensions: []Dimension{
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{Name: MassName, Power: 1},
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},
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},
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{
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DimensionName: "Mole",
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Receiver: "n",
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PrintString: "mol",
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Name: "Mol",
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TypeComment: "Mole represents an amount in moles",
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Dimensions: []Dimension{
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{Name: MoleName, Power: 1},
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},
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},
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{
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DimensionName: "Temperature",
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Receiver: "t",
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PrintString: "K",
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Name: "Kelvin",
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TypeComment: "Temperature represents a temperature in Kelvin",
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Dimensions: []Dimension{
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{Name: TemperatureName, Power: 1},
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},
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ErForm: "Temperaturer",
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},
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{
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DimensionName: "Time",
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Receiver: "t",
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PrintString: "s",
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Name: "Second",
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TypeComment: "Time represents a duration in seconds",
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ExtraConstant: []Constant{
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{Name: "Minute", Value: "60 * Second"},
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{Name: "Hour", Value: "60 * Minute"},
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},
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Dimensions: []Dimension{
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{Name: TimeName, Power: 1},
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},
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ErForm: "Timer",
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},
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// Derived units.
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{
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DimensionName: "AbsorbedRadioactiveDose",
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Receiver: "a",
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PrintString: "Gy",
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Name: "Gray",
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TypeComment: "AbsorbedRadioactiveDose is a measure of absorbed dose of ionizing radiation in grays",
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Dimensions: []Dimension{
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{Name: LengthName, Power: 2},
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{Name: TimeName, Power: -2},
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},
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},
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{
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DimensionName: "Acceleration",
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Receiver: "a",
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PrintString: "m s^-2",
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TypeComment: "Acceleration represents an acceleration in metres per second squared",
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Dimensions: []Dimension{
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{Name: LengthName, Power: 1},
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{Name: TimeName, Power: -2},
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},
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},
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{
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DimensionName: "Area",
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Receiver: "a",
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PrintString: "m^2",
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TypeComment: "Area represents an area in square metres",
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Dimensions: []Dimension{
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{Name: LengthName, Power: 2},
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},
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},
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{
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DimensionName: "Radioactivity",
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Receiver: "r",
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PrintString: "Bq",
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Name: "Becquerel",
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TypeComment: "Radioactivity represents a rate of radioactive decay in becquerels",
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Dimensions: []Dimension{
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{Name: TimeName, Power: -1},
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},
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},
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{
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DimensionName: "Capacitance",
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Receiver: "cp",
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PrintString: "F",
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Name: "Farad",
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TypeComment: "Capacitance represents an electrical capacitance in Farads",
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Dimensions: []Dimension{
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{Name: CurrentName, Power: 2},
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{Name: LengthName, Power: -2},
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{Name: MassName, Power: -1},
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{Name: TimeName, Power: 4},
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},
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ErForm: "Capacitancer",
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},
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{
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DimensionName: "Charge",
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Receiver: "ch",
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PrintString: "C",
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Name: "Coulomb",
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TypeComment: "Charge represents an electric charge in Coulombs",
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Dimensions: []Dimension{
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{Name: CurrentName, Power: 1},
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{Name: TimeName, Power: 1},
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},
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ErForm: "Charger",
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},
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{
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DimensionName: "Conductance",
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Receiver: "co",
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PrintString: "S",
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Name: "Siemens",
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TypeComment: "Conductance represents an electrical conductance in Siemens",
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Dimensions: []Dimension{
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{Name: CurrentName, Power: 2},
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{Name: LengthName, Power: -2},
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{Name: MassName, Power: -1},
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{Name: TimeName, Power: 3},
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},
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ErForm: "Conductancer",
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},
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{
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DimensionName: "EquivalentRadioactiveDose",
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Receiver: "a",
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PrintString: "Sy",
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Name: "Sievert",
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TypeComment: "EquivalentRadioactiveDose is a measure of equivalent dose of ionizing radiation in sieverts",
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Dimensions: []Dimension{
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{Name: LengthName, Power: 2},
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{Name: TimeName, Power: -2},
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},
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},
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{
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DimensionName: "Energy",
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Receiver: "e",
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PrintString: "J",
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Name: "Joule",
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TypeComment: "Energy represents a quantity of energy in Joules",
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Dimensions: []Dimension{
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{Name: LengthName, Power: 2},
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{Name: MassName, Power: 1},
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{Name: TimeName, Power: -2},
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},
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},
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{
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DimensionName: "Frequency",
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Receiver: "f",
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PrintString: "Hz",
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Name: "Hertz",
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TypeComment: "Frequency represents a frequency in Hertz",
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Dimensions: []Dimension{
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{Name: TimeName, Power: -1},
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},
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},
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{
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DimensionName: "Force",
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Receiver: "f",
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PrintString: "N",
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Name: "Newton",
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TypeComment: "Force represents a force in Newtons",
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Dimensions: []Dimension{
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{Name: LengthName, Power: 1},
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{Name: MassName, Power: 1},
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{Name: TimeName, Power: -2},
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},
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ErForm: "Forcer",
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},
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{
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DimensionName: "Inductance",
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Receiver: "i",
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PrintString: "H",
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Name: "Henry",
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TypeComment: "Inductance represents an electrical inductance in Henry",
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Dimensions: []Dimension{
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{Name: CurrentName, Power: -2},
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{Name: LengthName, Power: 2},
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{Name: MassName, Power: 1},
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{Name: TimeName, Power: -2},
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},
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ErForm: "Inductancer",
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},
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{
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DimensionName: "Power",
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Receiver: "pw",
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PrintString: "W",
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Name: "Watt",
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TypeComment: "Power represents a power in Watts",
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Dimensions: []Dimension{
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{Name: LengthName, Power: 2},
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{Name: MassName, Power: 1},
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{Name: TimeName, Power: -3},
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},
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},
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{
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DimensionName: "Resistance",
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Receiver: "r",
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PrintString: "Ω",
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Name: "Ohm",
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TypeComment: "Resistance represents an electrical resistance, impedance or reactance in Ohms",
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Dimensions: []Dimension{
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{Name: CurrentName, Power: -2},
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{Name: LengthName, Power: 2},
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{Name: MassName, Power: 1},
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{Name: TimeName, Power: -3},
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},
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ErForm: "Resistancer",
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},
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{
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DimensionName: "MagneticFlux",
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Receiver: "m",
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PrintString: "Wb",
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Name: "Weber",
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TypeComment: "MagneticFlux represents a magnetic flux in Weber",
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Dimensions: []Dimension{
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{Name: CurrentName, Power: -1},
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{Name: LengthName, Power: 2},
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{Name: MassName, Power: 1},
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{Name: TimeName, Power: -2},
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},
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},
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{
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DimensionName: "MagneticFluxDensity",
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Receiver: "m",
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PrintString: "T",
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Name: "Tesla",
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TypeComment: "MagneticFluxDensity represents a magnetic flux density in Tesla",
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Dimensions: []Dimension{
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{Name: CurrentName, Power: -1},
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{Name: MassName, Power: 1},
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{Name: TimeName, Power: -2},
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},
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},
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{
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DimensionName: "Pressure",
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Receiver: "pr",
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PrintString: "Pa",
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Name: "Pascal",
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TypeComment: "Pressure represents a pressure in Pascals",
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Dimensions: []Dimension{
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{Name: LengthName, Power: -1},
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{Name: MassName, Power: 1},
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{Name: TimeName, Power: -2},
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},
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ErForm: "Pressurer",
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},
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{
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DimensionName: "Torque",
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Receiver: "t",
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PrintString: "N m",
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Name: "Newtonmetre",
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TypeComment: "Torque represents a torque in Newton metres",
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Dimensions: []Dimension{
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{Name: LengthName, Power: 2},
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{Name: MassName, Power: 1},
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{Name: TimeName, Power: -2},
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},
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ErForm: "Torquer",
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},
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{
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DimensionName: "Velocity",
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Receiver: "v",
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PrintString: "m s^-1",
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TypeComment: "Velocity represents a velocity in metres per second",
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Dimensions: []Dimension{
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{Name: LengthName, Power: 1},
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{Name: TimeName, Power: -1},
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},
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},
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{
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DimensionName: "Voltage",
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Receiver: "v",
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PrintString: "V",
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Name: "Volt",
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TypeComment: "Voltage represents a voltage in Volts",
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Dimensions: []Dimension{
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{Name: CurrentName, Power: -1},
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{Name: LengthName, Power: 2},
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{Name: MassName, Power: 1},
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{Name: TimeName, Power: -3},
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},
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ErForm: "Voltager",
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},
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{
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DimensionName: "Volume",
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Receiver: "v",
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PowerOffset: -3,
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PrintString: "m^3",
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Name: "Litre",
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TypeComment: "Volume represents a volume in cubic metres",
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Dimensions: []Dimension{
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{Name: LengthName, Power: 3},
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},
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},
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}
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// Generate generates a file for each of the units
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func main() {
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for _, unit := range Units {
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generate(unit)
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generateTest(unit)
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}
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}
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const headerTemplate = `// Code generated by "go generate gonum.org/v1/gonum/unit”; DO NOT EDIT.
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// Copyright ©2014 The Gonum Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package unit
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import (
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"errors"
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"fmt"
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"math"
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{{if .PrintString}}"unicode/utf8"{{end}}
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)
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// {{.TypeComment}}.
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type {{.DimensionName}} float64
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`
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var header = template.Must(template.New("header").Parse(headerTemplate))
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const constTemplate = `
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const {{if .ExtraConstant}}({{end}}
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{{.Name}} {{.DimensionName}} = {{if .PowerOffset}} 1e{{.PowerOffset}} {{else}} 1 {{end}}
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{{$name := .Name}}
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{{range .ExtraConstant}} {{.Name}} = {{.Value}}
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{{end}}
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{{if .ExtraConstant}}){{end}}
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`
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var prefix = template.Must(template.New("prefix").Parse(constTemplate))
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const methodTemplate = `
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// Unit converts the {{.DimensionName}} to a *Unit.
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func ({{.Receiver}} {{.DimensionName}}) Unit() *Unit {
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return New(float64({{.Receiver}}), Dimensions{
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{{range .Dimensions}} {{.Name}}: {{.Power}},
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{{end}}
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})
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}
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// {{.DimensionName}} allows {{.DimensionName}} to implement a {{if .ErForm}}{{.ErForm}}{{else}}{{.DimensionName}}er{{end}} interface.
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func ({{.Receiver}} {{.DimensionName}}) {{.DimensionName}}() {{.DimensionName}} {
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return {{.Receiver}}
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}
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// From converts the unit into the receiver. From returns an
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// error if there is a mismatch in dimension.
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func ({{.Receiver}} *{{.DimensionName}}) From(u Uniter) error {
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if !DimensionsMatch(u, {{if .Name}}{{.Name}}{{else}}{{.DimensionName}}(0){{end}}){
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*{{.Receiver}} = {{.DimensionName}}(math.NaN())
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return errors.New("unit: dimension mismatch")
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}
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*{{.Receiver}} = {{.DimensionName}}(u.Unit().Value())
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return nil
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}
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`
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var methods = template.Must(template.New("methods").Parse(methodTemplate))
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const formatTemplate = `
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func ({{.Receiver}} {{.DimensionName}}) Format(fs fmt.State, c rune) {
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switch c {
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case 'v':
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if fs.Flag('#') {
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fmt.Fprintf(fs, "%T(%v)", {{.Receiver}}, float64({{.Receiver}}))
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return
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}
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fallthrough
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case 'e', 'E', 'f', 'F', 'g', 'G':
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p, pOk := fs.Precision()
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w, wOk := fs.Width()
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{{if .PrintString}}const unit = " {{.PrintString}}"
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switch {
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case pOk && wOk:
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fmt.Fprintf(fs, "%*.*"+string(c), pos(w-utf8.RuneCount([]byte(unit))), p, float64({{.Receiver}}))
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case pOk:
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fmt.Fprintf(fs, "%.*"+string(c), p, float64({{.Receiver}}))
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case wOk:
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fmt.Fprintf(fs, "%*"+string(c), pos(w-utf8.RuneCount([]byte(unit))), float64({{.Receiver}}))
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default:
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fmt.Fprintf(fs, "%"+string(c), float64({{.Receiver}}))
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}
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fmt.Fprint(fs, unit)
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default:
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fmt.Fprintf(fs, "%%!%c(%T=%g {{.PrintString}})", c, {{.Receiver}}, float64({{.Receiver}})) {{else}} switch {
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case pOk && wOk:
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fmt.Fprintf(fs, "%*.*"+string(c), w, p, float64({{.Receiver}}))
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case pOk:
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fmt.Fprintf(fs, "%.*"+string(c), p, float64({{.Receiver}}))
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case wOk:
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fmt.Fprintf(fs, "%*"+string(c), w, float64({{.Receiver}}))
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default:
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fmt.Fprintf(fs, "%"+string(c), float64({{.Receiver}}))
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}
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default:
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fmt.Fprintf(fs, "%%!%c(%T=%g)", c, {{.Receiver}}, float64({{.Receiver}})) {{end}}
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}
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}
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`
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var form = template.Must(template.New("format").Parse(formatTemplate))
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|
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func generate(unit Unit) {
|
|
lowerName := strings.ToLower(unit.DimensionName)
|
|
filename := lowerName + ".go"
|
|
f, err := os.Create(filename)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
defer f.Close()
|
|
|
|
var buf bytes.Buffer
|
|
|
|
err = header.Execute(&buf, unit)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
if unit.Name != "" {
|
|
err = prefix.Execute(&buf, unit)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
}
|
|
|
|
err = methods.Execute(&buf, unit)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
err = form.Execute(&buf, unit)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
b, err := format.Source(buf.Bytes())
|
|
if err != nil {
|
|
f.Write(buf.Bytes()) // This is here to debug bad format
|
|
log.Fatalf("error formatting %q: %s", unit.DimensionName, err)
|
|
}
|
|
|
|
f.Write(b)
|
|
}
|
|
|
|
const testTemplate = `// Code generated by "go generate gonum.org/v1/gonum/unit; DO NOT EDIT.
|
|
|
|
// Copyright ©2019 The Gonum Authors. All rights reserved.
|
|
// Use of this source code is governed by a BSD-style
|
|
// license that can be found in the LICENSE file.
|
|
|
|
package unit
|
|
|
|
import (
|
|
"fmt"
|
|
"testing"
|
|
)
|
|
|
|
func Test{{.DimensionName}}(t *testing.T) {
|
|
t.Parallel()
|
|
for _, value := range []float64{-1, 0, 1} {
|
|
var got {{.DimensionName}}
|
|
err := got.From({{.DimensionName}}(value).Unit())
|
|
if err != nil {
|
|
t.Errorf("unexpected error for %T conversion: %v", got, err)
|
|
}
|
|
if got != {{.DimensionName}}(value) {
|
|
t.Errorf("unexpected result from round trip of %T(%v): got: %v want: %v", got, value, got, value)
|
|
}
|
|
if got != got.{{.DimensionName}}() {
|
|
t.Errorf("unexpected result from self interface method call: got: %#v want: %#v", got, value)
|
|
}
|
|
err = got.From(ether(1))
|
|
if err == nil {
|
|
t.Errorf("expected error for ether to %T conversion", got)
|
|
}
|
|
}
|
|
}
|
|
|
|
func Test{{.DimensionName}}Format(t *testing.T) {
|
|
t.Parallel()
|
|
for _, test := range []struct{
|
|
value {{.DimensionName}}
|
|
format string
|
|
want string
|
|
}{
|
|
{1.23456789, "%v", "1.23456789{{with .PrintString}} {{.}}{{end}}"},
|
|
{1.23456789, "%.1v", "1{{with .PrintString}} {{.}}{{end}}"},
|
|
{1.23456789, "%20.1v", "{{if .PrintString}}{{$s := printf "1 %s" .PrintString}}{{printf "%20s" $s}}{{else}}{{printf "%20s" "1"}}{{end}}"},
|
|
{1.23456789, "%20v", "{{if .PrintString}}{{$s := printf "1.23456789 %s" .PrintString}}{{printf "%20s" $s}}{{else}}{{printf "%20s" "1.23456789"}}{{end}}"},
|
|
{1.23456789, "%1v", "1.23456789{{with .PrintString}} {{.}}{{end}}"},
|
|
{1.23456789, "%#v", "unit.{{.DimensionName}}(1.23456789)"},
|
|
{1.23456789, "%s", "%!s(unit.{{.DimensionName}}=1.23456789{{with .PrintString}} {{.}}{{end}})"},
|
|
} {
|
|
got := fmt.Sprintf(test.format, test.value)
|
|
if got != test.want {
|
|
t.Errorf("Format %q %v: got: %q want: %q", test.format, test.value, got, test.want)
|
|
}
|
|
}
|
|
}
|
|
`
|
|
|
|
var tests = template.Must(template.New("test").Parse(testTemplate))
|
|
|
|
func generateTest(unit Unit) {
|
|
lowerName := strings.ToLower(unit.DimensionName)
|
|
filename := lowerName + "_test.go"
|
|
f, err := os.Create(filename)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
defer f.Close()
|
|
|
|
var buf bytes.Buffer
|
|
err = tests.Execute(&buf, unit)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
|
|
b, err := format.Source(buf.Bytes())
|
|
if err != nil {
|
|
f.Write(buf.Bytes()) // This is here to debug bad format.
|
|
log.Fatalf("error formatting test for %q: %s", unit.DimensionName, err)
|
|
}
|
|
|
|
f.Write(b)
|
|
}
|