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go/types: respect IgnoreFuncBodies for function literals

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This is a 1:1 port of CL 313650 to go/types.

Change-Id: Iec01ac2831f21162d9977a139549e081ee769f90
Reviewed-on: https://go-review.googlesource.com/c/go/+/314631
Trust: Robert Findley <rfindley@google.com>
Run-TryBot: Robert Findley <rfindley@google.com>
TryBot-Result: Go Bot <gobot@golang.org>
Reviewed-by: Robert Griesemer <gri@golang.org>
This commit is contained in:
Rob Findley 2021-04-28 11:13:35 -04:00 • committed by Robert Findley
parent 6082c05d8b
commit fa6ed6e81a
2 changed files with 18 additions and 12 deletions
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26
src/go/types/expr.go
View file

@ -1085,18 +1085,20 @@ func (check *Checker) exprInternal(x *operand, e ast.Expr, hint Type) exprKind {
case *ast.FuncLit:
if sig, ok := check.typ(e.Type).(*Signature); ok {
// Anonymous functions are considered part of the
// init expression/func declaration which contains
// them: use existing package-level declaration info.
decl := check.decl // capture for use in closure below
iota := check.iota // capture for use in closure below (#22345)
// Don't type-check right away because the function may
// be part of a type definition to which the function
// body refers. Instead, type-check as soon as possible,
// but before the enclosing scope contents changes (#22992).
check.later(func() {
check.funcBody(decl, "<function literal>", sig, e.Body, iota)
})
if !check.conf.IgnoreFuncBodies && e.Body != nil {
// Anonymous functions are considered part of the
// init expression/func declaration which contains
// them: use existing package-level declaration info.
decl := check.decl // capture for use in closure below
iota := check.iota // capture for use in closure below (#22345)
// Don't type-check right away because the function may
// be part of a type definition to which the function
// body refers. Instead, type-check as soon as possible,
// but before the enclosing scope contents changes (#22992).
check.later(func() {
check.funcBody(decl, "<function literal>", sig, e.Body, iota)
})
}
x.mode = value
x.typ = sig
} else {

4
src/go/types/stmt.go
View file

@ -14,6 +14,10 @@ import (
)
func (check *Checker) funcBody(decl *declInfo, name string, sig *Signature, body *ast.BlockStmt, iota constant.Value) {
if check.conf.IgnoreFuncBodies {
panic("internal error: function body not ignored")
}
if trace {
check.trace(body.Pos(), "--- %s: %s", name, sig)
defer func() {