mirror of
https://github.com/VictoriaMetrics/VictoriaMetrics.git
synced 2024-12-26 12:20:10 +01:00
99 lines
2.6 KiB
Go
99 lines
2.6 KiB
Go
// Copyright 2015 The Go 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 ir
|
|
|
|
// This file defines the BuilderMode type and its command-line flag.
|
|
|
|
import (
|
|
"bytes"
|
|
"fmt"
|
|
)
|
|
|
|
// BuilderMode is a bitmask of options for diagnostics and checking.
|
|
//
|
|
// *BuilderMode satisfies the flag.Value interface. Example:
|
|
//
|
|
// var mode = ir.BuilderMode(0)
|
|
// func init() { flag.Var(&mode, "build", ir.BuilderModeDoc) }
|
|
//
|
|
type BuilderMode uint
|
|
|
|
const (
|
|
PrintPackages BuilderMode = 1 << iota // Print package inventory to stdout
|
|
PrintFunctions // Print function IR code to stdout
|
|
PrintSource // Print source code when printing function IR
|
|
LogSource // Log source locations as IR builder progresses
|
|
SanityCheckFunctions // Perform sanity checking of function bodies
|
|
NaiveForm // Build naïve IR form: don't replace local loads/stores with registers
|
|
GlobalDebug // Enable debug info for all packages
|
|
)
|
|
|
|
const BuilderModeDoc = `Options controlling the IR builder.
|
|
The value is a sequence of zero or more of these letters:
|
|
C perform sanity [C]hecking of the IR form.
|
|
D include [D]ebug info for every function.
|
|
P print [P]ackage inventory.
|
|
F print [F]unction IR code.
|
|
A print [A]ST nodes responsible for IR instructions
|
|
S log [S]ource locations as IR builder progresses.
|
|
N build [N]aive IR form: don't replace local loads/stores with registers.
|
|
`
|
|
|
|
func (m BuilderMode) String() string {
|
|
var buf bytes.Buffer
|
|
if m&GlobalDebug != 0 {
|
|
buf.WriteByte('D')
|
|
}
|
|
if m&PrintPackages != 0 {
|
|
buf.WriteByte('P')
|
|
}
|
|
if m&PrintFunctions != 0 {
|
|
buf.WriteByte('F')
|
|
}
|
|
if m&PrintSource != 0 {
|
|
buf.WriteByte('A')
|
|
}
|
|
if m&LogSource != 0 {
|
|
buf.WriteByte('S')
|
|
}
|
|
if m&SanityCheckFunctions != 0 {
|
|
buf.WriteByte('C')
|
|
}
|
|
if m&NaiveForm != 0 {
|
|
buf.WriteByte('N')
|
|
}
|
|
return buf.String()
|
|
}
|
|
|
|
// Set parses the flag characters in s and updates *m.
|
|
func (m *BuilderMode) Set(s string) error {
|
|
var mode BuilderMode
|
|
for _, c := range s {
|
|
switch c {
|
|
case 'D':
|
|
mode |= GlobalDebug
|
|
case 'P':
|
|
mode |= PrintPackages
|
|
case 'F':
|
|
mode |= PrintFunctions
|
|
case 'A':
|
|
mode |= PrintSource
|
|
case 'S':
|
|
mode |= LogSource
|
|
case 'C':
|
|
mode |= SanityCheckFunctions
|
|
case 'N':
|
|
mode |= NaiveForm
|
|
default:
|
|
return fmt.Errorf("unknown BuilderMode option: %q", c)
|
|
}
|
|
}
|
|
*m = mode
|
|
return nil
|
|
}
|
|
|
|
// Get returns m.
|
|
func (m BuilderMode) Get() interface{} { return m }
|