gotools/gopls/internal/golang/identifier.go

var ErrNoIdentFound …

// inferredSignature determines the resolved non-generic signature for an
// identifier in an instantiation expression.
//
// If no such signature exists, it returns nil.
func inferredSignature(info *types.Info, id *ast.Ident) *types.Signature { … }

// searchForEnclosing returns, given the AST path to a SelectorExpr,
// the exported named type of the innermost implicit field selection.
//
// For example, given "new(A).d" where this is (due to embedding) a
// shorthand for "new(A).b.c.d", it returns the named type of c,
// if it is exported, otherwise the type of b, or A.
func searchForEnclosing(info *types.Info, path []ast.Node) *types.TypeName { … }

// typeToObject returns the relevant type name for the given type, after
// unwrapping pointers, arrays, slices, channels, and function signatures with
// a single non-error result, and ignoring built-in named types.
func typeToObject(typ types.Type) *types.TypeName { … }

func hasErrorType(obj types.Object) bool { … }

// typeSwitchImplicits returns all the implicit type switch objects that
// correspond to the leaf *ast.Ident. It also returns the original type
// associated with the identifier (outside of a case clause).
func typeSwitchImplicits(info *types.Info, path []ast.Node) ([]types.Object, types.Type) { … }