Clean up a little lint and some shadowed variables

appengine.go

@@ -29,7 +29,7 @@ import (
 
 func init() {
 	glog.SetToStderr(true)
-	cfg := config.ParseConfigFromFile("cayley_appengine.cfg")
+	cfg, _ := config.Load("cayley_appengine.cfg")
 	qs, _ := graph.NewQuadStore("memstore", "", nil)
 	glog.Errorln(cfg)
 	db.Load(qs, cfg, cfg.DatabasePath)

graph/bolt/quadstore.go

@@ -43,7 +43,6 @@ var (
 	}
 	hashSize         = sha1.Size
 	localFillPercent = 0.7
-
 )
 
 type Token struct {
@@ -209,10 +208,10 @@ func (qs *QuadStore) ApplyDeltas(deltas []graph.Delta, ignoreOpts graph.IgnoreOp
 		for _, d := range deltas {
 			err := qs.buildQuadWrite(tx, d.Quad, d.ID.Int(), d.Action == graph.Add)
 			if err != nil {
-				if err == graph.ErrQuadExists && ignoreOpts.IgnoreDup{
+				if err == graph.ErrQuadExists && ignoreOpts.IgnoreDup {
 					continue
 				}
-				if err == graph.ErrQuadNotExist && ignoreOpts.IgnoreMissing{
+				if err == graph.ErrQuadNotExist && ignoreOpts.IgnoreMissing {
 					continue
 				}
 				return err
@@ -269,7 +268,7 @@ func (qs *QuadStore) buildQuadWrite(tx *bolt.Tx, q quad.Quad, id int64, isAdd bo
 		return graph.ErrQuadExists
 	}
 	if !isAdd && len(entry.History)%2 == 0 {
-		glog.Error("attempt to delete non-existent quad %v: %#c", entry, q)
+		glog.Errorf("attempt to delete non-existent quad %v: %#v", entry, q)
 		return graph.ErrQuadNotExist
 	}
 

graph/iterator.go

@@ -30,7 +30,7 @@ type Tagger struct {
 	fixedTags map[string]Value
 }
 
-// Adds a tag to the iterator.
+// Add a tag to the iterator.
 func (t *Tagger) Add(tag string) {
 	t.tags = append(t.tags, tag)
 }
@@ -42,12 +42,12 @@ func (t *Tagger) AddFixed(tag string, value Value) {
 	t.fixedTags[tag] = value
 }
 
-// Returns the tags. The returned value must not be mutated.
+// Tags returns the tags held in the tagger. The returned value must not be mutated.
 func (t *Tagger) Tags() []string {
 	return t.tags
 }
 
-// Returns the fixed tags. The returned value must not be mutated.
+// Fixed returns the fixed tags held in the tagger. The returned value must not be mutated.
 func (t *Tagger) Fixed() map[string]Value {
 	return t.fixedTags
 }
@@ -206,6 +206,7 @@ type IteratorStats struct {
 // Type enumerates the set of Iterator types.
 type Type int
 
+// These are the iterator types, defined as constants
 const (
 	Invalid Type = iota
 	All
@@ -306,6 +307,7 @@ func DumpStats(it Iterator) StatsContainer {
 
 // Utility logging functions for when an iterator gets called Next upon, or Contains upon, as
 // well as what they return. Highly useful for tracing the execution path of a query.
+
 func ContainsLogIn(it Iterator, val Value) {
 	if glog.V(4) {
 		glog.V(4).Infof("%s %d CHECK CONTAINS %d", strings.ToUpper(it.Type().String()), it.UID(), val)

graph/iterator/or_iterator_test.go

@@ -90,9 +90,9 @@ func TestShortCircuitingOrBasics(t *testing.T) {
 	or = NewShortCircuitOr()
 	or.AddSubIterator(f1)
 	or.AddSubIterator(f2)
-	v, exact := or.Size()
-	if v != 4 {
-		t.Errorf("Unexpected iterator size, got:%d expected %d", v, 4)
+	size, exact := or.Size()
+	if size != 4 {
+		t.Errorf("Unexpected iterator size, got:%d expected %d", size, 4)
 	}
 	if !exact {
 		t.Error("Size not exact.")

graph/mongo/iterator.go

@@ -160,7 +160,7 @@ func (it *Iterator) NextPath() bool {
 	return false
 }
 
-// No subiterators.
+// SubIterators returns no subiterators for a Mongo iterator.
 func (it *Iterator) SubIterators() []graph.Iterator {
 	return nil
 }

graph/quadwriter.go

@@ -23,8 +23,8 @@ package graph
 
 import (
 	"errors"
-	"time"
 	"flag"
+	"time"
 
 	"github.com/google/cayley/quad"
 )
@@ -64,7 +64,7 @@ var (
 )
 
 var (
-	IgnoreDup = flag.Bool("ignoredup", false, "Don't stop loading on duplicated key on add")
+	IgnoreDup     = flag.Bool("ignoredup", false, "Don't stop loading on duplicated key on add")
 	IgnoreMissing = flag.Bool("ignoremissing", false, "Don't stop loading on missing key on delete")
 )
 

query/gremlin/build_iterator.go

@@ -140,10 +140,12 @@ func buildInOutIterator(obj *otto.Object, qs graph.QuadStore, base graph.Iterato
 }
 
 func buildIteratorTreeHelper(obj *otto.Object, qs graph.QuadStore, base graph.Iterator) graph.Iterator {
-	it := base
-
 	// TODO: Better error handling
-	var subIt graph.Iterator
+	var (
+		it    graph.Iterator
+		subIt graph.Iterator
+	)
+
 	if prev, _ := obj.Get("_gremlin_prev"); !prev.IsObject() {
 		subIt = base
 	} else {
@@ -314,5 +316,8 @@ func buildIteratorTreeHelper(obj *otto.Object, qs graph.QuadStore, base graph.It
 		and.AddSubIterator(notIt)
 		it = and
 	}
+	if it == nil {
+		panic("Iterator building does not catch the output iterator in some case.")
+	}
 	return it
 }

query/sexp/parser_test.go

@@ -57,9 +57,9 @@ var testQueries = []struct {
 func TestMemstoreBackedSexp(t *testing.T) {
 	qs, _ := graph.NewQuadStore("memstore", "", nil)
 	w, _ := graph.NewQuadWriter("single", qs, nil)
-	it := BuildIteratorTreeForQuery(qs, "()")
-	if it.Type() != graph.Null {
-		t.Errorf(`Incorrect type for empty query, got:%q expect: "null"`, it.Type())
+	emptyIt := BuildIteratorTreeForQuery(qs, "()")
+	if emptyIt.Type() != graph.Null {
+		t.Errorf(`Incorrect type for empty query, got:%q expect: "null"`, emptyIt.Type())
 	}
 	for _, test := range testQueries {
 		if test.add.IsValid() {