feat(traceql): implement stringer for AttributeScope

internal/traceql/attribute.go

@@ -1,6 +1,7 @@
 package traceql
 
 import (
+	"fmt"
 	"strings"
 
 	"github.com/go-faster/errors"
@@ -139,4 +140,21 @@ const (
 	ScopeNone AttributeScope = iota
 	ScopeResource
 	ScopeSpan
+	ScopeInstrumentation
 )
+
+// String implements [fmt.Stringer].
+func (s AttributeScope) String() string {
+	switch s {
+	case ScopeNone:
+		return "none"
+	case ScopeResource:
+		return "resource"
+	case ScopeSpan:
+		return "span"
+	case ScopeInstrumentation:
+		return "<instrumentation>"
+	default:
+		return fmt.Sprintf("unknown scope %d", uint8(s))
+	}
+}

internal/traceql/autocomplete.go

@@ -37,7 +37,7 @@ func ParseAutocomplete(input string) (c Autocomplete) {
 			return c
 		case !ok:
 			// Handle cases like `{ .foo = <missing field> && .bar = 10 }`.
-			op, ok := p.peekBinaryOp()
+			op, ok = p.peekBinaryOp()
 			if !ok {
 				return c
 			}