46 lines
1.1 KiB
Go
46 lines
1.1 KiB
Go
// Copyright 2020 The Go 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 typesinternal provides access to internal go/types APIs that are not
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// yet exported.
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package typesinternal
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import (
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"go/token"
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"go/types"
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"reflect"
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"unsafe"
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)
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func SetUsesCgo(conf *types.Config) bool {
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v := reflect.ValueOf(conf).Elem()
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f := v.FieldByName("go115UsesCgo")
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if !f.IsValid() {
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f = v.FieldByName("UsesCgo")
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if !f.IsValid() {
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return false
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}
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}
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addr := unsafe.Pointer(f.UnsafeAddr())
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*(*bool)(addr) = true
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return true
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}
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func ReadGo116ErrorData(terr types.Error) (ErrorCode, token.Pos, token.Pos, bool) {
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var data [3]int
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// By coincidence all of these fields are ints, which simplifies things.
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v := reflect.ValueOf(terr)
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for i, name := range []string{"go116code", "go116start", "go116end"} {
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f := v.FieldByName(name)
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if !f.IsValid() {
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return 0, 0, 0, false
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}
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data[i] = int(f.Int())
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}
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return ErrorCode(data[0]), token.Pos(data[1]), token.Pos(data[2]), true
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}
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