Giant blob of minor changes

[dotfiles/.git] / .config / coc / extensions / coc-go-data / tools / pkg / mod / golang.org / x / tools@v0.0.0-20201028153306-37f0764111ff / go / ssa / util.go

diff --git a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201028153306-37f0764111ff/go/ssa/util.go b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201028153306-37f0764111ff/go/ssa/util.go
new file mode 100644 (file)
index 0000000..a09949a
--- /dev/null
+++ b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201028153306-37f0764111ff/go/ssa/util.go
@@ -0,0 +1,89 @@
+// Copyright 2013 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 ssa
+
+// This file defines a number of miscellaneous utility functions.
+
+import (
+       "fmt"
+       "go/ast"
+       "go/token"
+       "go/types"
+       "io"
+       "os"
+
+       "golang.org/x/tools/go/ast/astutil"
+)
+
+//// AST utilities
+
+func unparen(e ast.Expr) ast.Expr { return astutil.Unparen(e) }
+
+// isBlankIdent returns true iff e is an Ident with name "_".
+// They have no associated types.Object, and thus no type.
+//
+func isBlankIdent(e ast.Expr) bool {
+       id, ok := e.(*ast.Ident)
+       return ok && id.Name == "_"
+}
+
+//// Type utilities.  Some of these belong in go/types.
+
+// isPointer returns true for types whose underlying type is a pointer.
+func isPointer(typ types.Type) bool {
+       _, ok := typ.Underlying().(*types.Pointer)
+       return ok
+}
+
+func isInterface(T types.Type) bool { return types.IsInterface(T) }
+
+// deref returns a pointer's element type; otherwise it returns typ.
+func deref(typ types.Type) types.Type {
+       if p, ok := typ.Underlying().(*types.Pointer); ok {
+               return p.Elem()
+       }
+       return typ
+}
+
+// recvType returns the receiver type of method obj.
+func recvType(obj *types.Func) types.Type {
+       return obj.Type().(*types.Signature).Recv().Type()
+}
+
+// logStack prints the formatted "start" message to stderr and
+// returns a closure that prints the corresponding "end" message.
+// Call using 'defer logStack(...)()' to show builder stack on panic.
+// Don't forget trailing parens!
+//
+func logStack(format string, args ...interface{}) func() {
+       msg := fmt.Sprintf(format, args...)
+       io.WriteString(os.Stderr, msg)
+       io.WriteString(os.Stderr, "\n")
+       return func() {
+               io.WriteString(os.Stderr, msg)
+               io.WriteString(os.Stderr, " end\n")
+       }
+}
+
+// newVar creates a 'var' for use in a types.Tuple.
+func newVar(name string, typ types.Type) *types.Var {
+       return types.NewParam(token.NoPos, nil, name, typ)
+}
+
+// anonVar creates an anonymous 'var' for use in a types.Tuple.
+func anonVar(typ types.Type) *types.Var {
+       return newVar("", typ)
+}
+
+var lenResults = types.NewTuple(anonVar(tInt))
+
+// makeLen returns the len builtin specialized to type func(T)int.
+func makeLen(T types.Type) *Builtin {
+       lenParams := types.NewTuple(anonVar(T))
+       return &Builtin{
+               name: "len",
+               sig:  types.NewSignature(nil, lenParams, lenResults, false),
+       }
+}