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go/types: fix errors in recording type information
In my previous change, I didn't use the correct functions for continuing to record type informations after errors. Change to using the correct functions, and add a comment to clarify in expr.go. Updates #22467 Change-Id: I66ebb636ceb2b994db652343430f0551db0050c3 Reviewed-on: https://go-review.googlesource.com/128835 Run-TryBot: Robert Griesemer <gri@golang.org> Reviewed-by: Robert Griesemer <gri@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
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@ -42,7 +42,7 @@ func mustTypecheck(t *testing.T, path, source string, info *Info) string {
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return pkg.Name()
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}
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func maybeTypecheck(t *testing.T, path, source string, info *Info) string {
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func mayTypecheck(t *testing.T, path, source string, info *Info) string {
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fset := token.NewFileSet()
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f, err := parser.ParseFile(fset, path, source, 0)
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if f == nil { // ignore errors unless f is nil
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@ -265,7 +265,7 @@ func TestTypesInfo(t *testing.T) {
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for _, test := range tests {
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info := Info{Types: make(map[ast.Expr]TypeAndValue)}
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name := maybeTypecheck(t, "TypesInfo", test.src, &info)
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name := mayTypecheck(t, "TypesInfo", test.src, &info)
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// look for expression type
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var typ Type
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@ -310,7 +310,7 @@ func (check *Checker) shortVarDecl(pos token.Pos, lhs, rhs []ast.Expr) {
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check.recordDef(ident, obj)
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}
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} else {
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check.expr(&operand{}, lhs)
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check.useLHS(lhs)
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check.errorf(lhs.Pos(), "cannot declare %s", lhs)
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}
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if obj == nil {
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@ -34,9 +34,7 @@ func (check *Checker) call(x *operand, e *ast.CallExpr) exprKind {
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check.conversion(x, T)
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}
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default:
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for _, arg := range e.Args {
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check.expr(&operand{}, arg)
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}
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check.use(e.Args...)
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check.errorf(e.Args[n-1].Pos(), "too many arguments in conversion to %s", T)
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}
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x.expr = e
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@ -1094,6 +1094,8 @@ func (check *Checker) exprInternal(x *operand, e ast.Expr, hint Type) exprKind {
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continue
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}
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key, _ := kv.Key.(*ast.Ident)
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// do all possible checks early (before exiting due to errors)
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// so we don't drop information on the floor
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check.expr(x, kv.Value)
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if key == nil {
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check.errorf(kv.Pos(), "invalid field name %s in struct literal", kv.Key)
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