+++ /dev/null
-// 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 }