func Parse(input string) (sg *query.SubGraph, rerr error) {
l := lex.NewLexer(input)
go run(l)
sg = nil
for item := range l.Items {
if item.Typ == itemText {
continue
}
if item.Typ == itemOpType {
if item.Val == "mutation" {
return nil, errors.New("Mutations not supported")
}
}
if item.Typ == itemLeftCurl {
if sg == nil {
sg, rerr = getRoot(l)
if rerr != nil {
x.Err(glog, rerr).Error("While retrieving subgraph root")
return nil, rerr
}
} else {
if err := godeep(l, sg); err != nil {
return sg, err
}
}
}
}
return sg, nil
}
func TestNewLexerMutation(t *testing.T) {
input := `
mutation {
set {
What is <this> .
Why is this #!!?
How is this?
}
delete {
Why is this
}
}
query {
me(xid: rick) {
_city
}
}`
l := lex.NewLexer(input)
go run(l)
for item := range l.Items {
if item.Typ == lex.ItemError {
t.Error(item.String())
}
t.Log(item.String())
}
}
func Parse(line string) (rnq NQuad, rerr error) {
l := lex.NewLexer(line)
go run(l)
var oval string
var vend bool
for item := range l.Items {
if item.Typ == itemSubject {
rnq.Subject = stripBracketsIfPresent(item.Val)
}
if item.Typ == itemPredicate {
rnq.Predicate = stripBracketsIfPresent(item.Val)
}
if item.Typ == itemObject {
rnq.ObjectId = stripBracketsIfPresent(item.Val)
}
if item.Typ == itemLiteral {
oval = item.Val
}
if item.Typ == itemLanguage {
rnq.Language = item.Val
}
if item.Typ == itemObjectType {
// TODO: Strictly parse common types like integers, floats etc.
if len(oval) == 0 {
glog.Fatalf(
"itemObject should be emitted before itemObjectType. Input: %q",
line)
}
oval += "@@" + stripBracketsIfPresent(item.Val)
}
if item.Typ == lex.ItemError {
return rnq, fmt.Errorf(item.Val)
}
if item.Typ == itemValidEnd {
vend = true
}
if item.Typ == itemLabel {
rnq.Label = stripBracketsIfPresent(item.Val)
}
}
if !vend {
return rnq, fmt.Errorf("Invalid end of input")
}
if len(oval) > 0 {
rnq.ObjectValue = oval
}
if len(rnq.Subject) == 0 || len(rnq.Predicate) == 0 {
return rnq, fmt.Errorf("Empty required fields in NQuad")
}
if len(rnq.ObjectId) == 0 && rnq.ObjectValue == nil {
return rnq, fmt.Errorf("No Object in NQuad")
}
return rnq, nil
}
func TestNewLexer(t *testing.T) {
input := `
mutation {
me( id: 10, xid: rick ) {
name0 # my name
_city, # 0what would fail lex.
profilePic(width: 100, height: 100)
friends {
name
}
}
}`
l := lex.NewLexer(input)
go run(l)
for item := range l.Items {
fmt.Println(item.String())
}
}
func TestAbruptMutation(t *testing.T) {
input := `
mutation {
set {
What is <this> .
Why is this #!!?
How is this?
}`
l := lex.NewLexer(input)
go run(l)
var typ lex.ItemType
for item := range l.Items {
t.Log(item.String())
typ = item.Typ
}
if typ != lex.ItemError {
t.Error("This should fail.")
}
}
func TestNewLexer(t *testing.T) {
input := `
query {
me( id: 10, xid: rick ) {
name0 # my name
_city, # 0what would fail lex.
profilePic(width: 100, height: 100)
friends {
name
}
}
}`
l := lex.NewLexer(input)
go run(l)
for item := range l.Items {
if item.Typ == lex.ItemError {
t.Error(item.String())
}
t.Log(item.String())
}
}
func Parse(input string) (gq *GraphQuery, mu *Mutation, rerr error) {
l := lex.NewLexer(input)
go run(l)
mu = nil
gq = nil
for item := range l.Items {
if item.Typ == itemText {
continue
}
if item.Typ == itemOpType {
if item.Val == "mutation" {
if mu != nil {
return nil, nil, errors.New("Only one mutation block allowed.")
}
mu, rerr = getMutation(l)
if rerr != nil {
return nil, nil, rerr
}
}
}
if item.Typ == itemLeftCurl {
if gq == nil {
gq, rerr = getRoot(l)
if rerr != nil {
x.Err(glog, rerr).Error("While retrieving subgraph root")
return nil, nil, rerr
}
} else {
if err := godeep(l, gq); err != nil {
return nil, nil, err
}
}
}
}
return gq, mu, nil
}
