// Find returns the node for the given ID.
func (m *Map) Find(id uint64) (schema.Node, error) {
if n := m.nodes[id]; n.IsValid() {
return n, nil
}
data, err := m.registry().Find(id)
if err != nil {
return schema.Node{}, err
}
msg, err := capnp.Unmarshal(data)
if err != nil {
return schema.Node{}, err
}
req, err := schema.ReadRootCodeGeneratorRequest(msg)
if err != nil {
return schema.Node{}, err
}
nodes, err := req.Nodes()
if err != nil {
return schema.Node{}, err
}
if m.nodes == nil {
m.nodes = make(map[uint64]schema.Node)
}
for i := 0; i < nodes.Len(); i++ {
n := nodes.At(i)
m.nodes[n.Id()] = n
}
return m.nodes[id], nil
}
func TestDefaultFind(t *testing.T) {
if s := schemas.Find(0xdeadbeef); s != nil {
t.Errorf("schemas.Find(0xdeadbeef) = %d-byte slice; want nil", len(s))
}
s := schemas.Find(capnp.Package)
if s == nil {
t.Fatalf("schemas.Find(%#x) = nil", capnp.Package)
}
msg, err := capnp.Unmarshal(s)
if err != nil {
t.Fatalf("capnp.Unmarshal(schemas.Find(%#x)) error: %v", capnp.Package, err)
}
req, err := schema.ReadRootCodeGeneratorRequest(msg)
if err != nil {
t.Fatalf("ReadRootCodeGeneratorRequest error: %v", err)
}
nodes, err := req.Nodes()
if err != nil {
t.Fatalf("req.Nodes() error: %v", err)
}
for i := 0; i < nodes.Len(); i++ {
n := nodes.At(i)
if n.Id() == capnp.Package {
// Found
if n.Which() != schema.Node_Which_annotation {
t.Errorf("found node %#x which = %v; want annotation", capnp.Package, n.Which())
}
return
}
}
t.Fatalf("could not find node %#x in registry", capnp.Package)
}
func mustReadGeneratorRequest(t *testing.T, name string) schema.CodeGeneratorRequest {
data := mustReadTestFile(t, name)
msg, err := capnp.Unmarshal(data)
if err != nil {
t.Fatalf("Unmarshaling %s: %v", name, err)
}
req, err := schema.ReadRootCodeGeneratorRequest(msg)
if err != nil {
t.Fatalf("Reading code generator request %s: %v", name, err)
}
return req
}
func main() {
var opts genoptions
flag.BoolVar(&opts.promises, "promises", true, "generate code for promises")
flag.BoolVar(&opts.schemas, "schemas", true, "embed schema information in generated code")
flag.BoolVar(&opts.structStrings, "structstrings", true, "generate String() methods for structs (-schemas must be true)")
flag.Parse()
msg, err := capnp.NewDecoder(os.Stdin).Decode()
if err != nil {
fmt.Fprintln(os.Stderr, "capnpc-go: reading input:", err)
os.Exit(1)
}
req, err := schema.ReadRootCodeGeneratorRequest(msg)
if err != nil {
fmt.Fprintln(os.Stderr, "capnpc-go: reading input:", err)
os.Exit(1)
}
nodes, err := buildNodeMap(req)
if err != nil {
fmt.Fprintln(os.Stderr, "capnpc-go:", err)
os.Exit(1)
}
success := true
reqFiles, _ := req.RequestedFiles()
for i := 0; i < reqFiles.Len(); i++ {
reqf := reqFiles.At(i)
err := generateFile(reqf, nodes, opts)
if err != nil {
fname, _ := reqf.Filename()
fmt.Fprintf(os.Stderr, "capnpc-go: generating %s: %v\n", fname, err)
success = false
}
}
if !success {
os.Exit(1)
}
}
func TestEncode(t *testing.T) {
tests := []struct {
constID uint64
text string
}{
{0xc0b634e19e5a9a4e, `(key = "42", value = (int32 = -123))`},
{0x967c8fe21790b0fb, `(key = "float", value = (float64 = 3.14))`},
{0xdf35cb2e1f5ea087, `(key = "bool", value = (bool = false))`},
{0xb167974479102805, `(map = [(key = "foo", value = (void = void)), (key = "bar", value = (void = void))])`},
{0x81fdbfdc91779421, `(map = [])`},
{0x8e85252144f61858, `(data = "Hi\xde\xad\xbe\xef\xca\xfe")`},
{0xc21398a8474837ba, `(voidList = [void, void])`},
{0xde82c2eeb3a4b07c, `(boolList = [true, false, true, false])`},
{0xf9e3ffc179272aa2, `(int8List = [1, -2, 3])`},
{0xfc421b96ec6ad2b6, `(int64List = [1, -2, 3])`},
{0xb3034b89d02775a5, `(uint8List = [255, 0, 1])`},
{0x9246c307e46ad03b, `(uint64List = [1, 2, 3])`},
{0xd012128a1a9cb7fc, `(float32List = [0.5, 3.14, -2])`},
{0xf16c386c66d492e2, `(textList = ["foo", "bar", "baz"])`},
{0xe14f4d42aa55de8c, `(dataList = ["\xde\xad\xbe\xef", "\xca\xfe"])`},
{0xe88c91698f7f0b73, `(cheese = gouda)`},
{0x9c51b843b337490b, `(cheeseList = [gouda, cheddar])`},
{0x81e2aadb8bfb237b, `(matrix = [[1, 2, 3], [4, 5, 6]])`},
}
data, err := readTestFile("txt.capnp.out")
if err != nil {
t.Fatal(err)
}
reg := new(schemas.Registry)
err = reg.Register(&schemas.Schema{
Bytes: data,
Nodes: []uint64{
0x8df8bc5abdc060a6,
0xd3602730c572a43b,
},
})
if err != nil {
t.Fatalf("Adding to registry: %v", err)
}
msg, err := capnp.Unmarshal(data)
if err != nil {
t.Fatal("Unmarshaling txt.capnp.out:", err)
}
req, err := schema.ReadRootCodeGeneratorRequest(msg)
if err != nil {
t.Fatal("Reading code generator request txt.capnp.out:", err)
}
nodes, err := req.Nodes()
if err != nil {
t.Fatal(err)
}
nodeMap := make(map[uint64]schema.Node, nodes.Len())
for i := 0; i < nodes.Len(); i++ {
n := nodes.At(i)
nodeMap[n.Id()] = n
}
for _, test := range tests {
c := nodeMap[test.constID]
if !c.IsValid() {
t.Errorf("Can't find node %#x; skipping", test.constID)
continue
}
dn, _ := c.DisplayName()
if c.Which() != schema.Node_Which_const {
t.Errorf("%s @%#x is a %v, not const; skipping", dn, test.constID, c.Which())
continue
}
typ, err := c.Const().Type()
if err != nil {
t.Errorf("(%s @%#x).const.type: %v", dn, test.constID, err)
continue
}
if typ.Which() != schema.Type_Which_structType {
t.Errorf("(%s @%#x).const.type is a %v; want struct", dn, test.constID, typ.Which())
continue
}
tid := typ.StructType().TypeId()
v, err := c.Const().Value()
if err != nil {
t.Errorf("(%s @%#x).const.value: %v", dn, test.constID, err)
continue
}
if v.Which() != schema.Value_Which_structValue {
t.Errorf("(%s @%#x).const.value is a %v; want struct", dn, test.constID, v.Which())
continue
}
sv, err := v.StructValuePtr()
if err != nil {
t.Errorf("(%s @%#x).const.value.struct: %v", dn, test.constID, err)
continue
}
buf := new(bytes.Buffer)
enc := NewEncoder(buf)
enc.UseRegistry(reg)
if err := enc.Encode(tid, sv.Struct()); err != nil {
t.Errorf("Encode(%#x, (%s @%#x).const.value.struct): %v", tid, dn, test.constID, err)
continue
}
if text := buf.String(); text != test.text {
t.Errorf("Encode(%#x, (%s @%#x).const.value.struct) = %q; want %q", tid, dn, test.constID, text, test.text)
continue
}
}
}
func TestBuildNodeMap(t *testing.T) {
tests := []struct {
name string
fileID uint64
fileNodes []uint64
}{
{
name: "go.capnp.out",
fileID: 0xd12a1c51fedd6c88,
fileNodes: []uint64{
0xbea97f1023792be0,
0xe130b601260e44b5,
0xc58ad6bd519f935e,
0xa574b41924caefc7,
0xc8768679ec52e012,
0xfa10659ae02f2093,
0xc2b96012172f8df1,
},
},
{
name: "group.capnp.out",
fileID: 0x83c2b5818e83ab19,
fileNodes: []uint64{
0xd119fd352d8ea888, // the struct
0x822357857e5925d4, // the group
},
},
}
for _, test := range tests {
data, err := readTestFile(test.name)
if err != nil {
t.Errorf("readTestFile(%q): %v", test.name, err)
continue
}
msg, err := capnp.Unmarshal(data)
if err != nil {
t.Errorf("Unmarshaling %s: %v", test.name, err)
continue
}
req, err := schema.ReadRootCodeGeneratorRequest(msg)
if err != nil {
t.Errorf("Reading code generator request %s: %v", test.name, err)
continue
}
nodes, err := buildNodeMap(req)
if err != nil {
t.Errorf("%s: buildNodeMap: %v", test.name, err)
}
f := nodes[test.fileID]
if f == nil {
t.Errorf("%s: node map is missing file node @%#x", test.name, test.fileID)
continue
}
if f.Id() != test.fileID {
t.Errorf("%s: node map has ID @%#x for lookup of @%#x", test.name, f.Id(), test.fileID)
}
// Test node.nodes collection
for _, id := range test.fileNodes {
found := false
for _, fn := range f.nodes {
if fn.Id() == id {
found = true
break
}
}
if !found {
t.Errorf("%s: missing @%#x from file nodes", test.name, id)
}
}
// Test map lookup
for _, k := range test.fileNodes {
n := nodes[k]
if n == nil {
t.Errorf("%s: missing @%#x from node map", test.name, k)
}
if n.Id() != k {
t.Errorf("%s: node map has ID @%#x for lookup of @%#x", test.name, n.Id(), k)
}
}
}
}
func TestDefineFile(t *testing.T) {
// Sanity check to make sure codegen produces parseable Go.
const iterations = 3
defaultOptions := genoptions{
promises: true,
schemas: true,
structStrings: true,
}
tests := []struct {
fileID uint64
fname string
opts genoptions
}{
{0x832bcc6686a26d56, "aircraft.capnp.out", defaultOptions},
{0x832bcc6686a26d56, "aircraft.capnp.out", genoptions{
promises: false,
schemas: false,
structStrings: false,
}},
{0x832bcc6686a26d56, "aircraft.capnp.out", genoptions{
promises: true,
schemas: false,
structStrings: false,
}},
{0x832bcc6686a26d56, "aircraft.capnp.out", genoptions{
promises: false,
schemas: true,
structStrings: false,
}},
{0x832bcc6686a26d56, "aircraft.capnp.out", genoptions{
promises: true,
schemas: true,
structStrings: false,
}},
{0x832bcc6686a26d56, "aircraft.capnp.out", genoptions{
promises: false,
schemas: true,
structStrings: true,
}},
{0x83c2b5818e83ab19, "group.capnp.out", defaultOptions},
{0xb312981b2552a250, "rpc.capnp.out", defaultOptions},
{0xd68755941d99d05e, "scopes.capnp.out", defaultOptions},
{0xecd50d792c3d9992, "util.capnp.out", defaultOptions},
}
for _, test := range tests {
data, err := readTestFile(test.fname)
if err != nil {
t.Errorf("reading %s: %v", test.fname, err)
continue
}
msg, err := capnp.Unmarshal(data)
if err != nil {
t.Errorf("Unmarshaling %s: %v", test.fname, err)
continue
}
req, err := schema.ReadRootCodeGeneratorRequest(msg)
if err != nil {
t.Errorf("Reading code generator request %s: %v", test.fname, err)
continue
}
nodes, err := buildNodeMap(req)
if err != nil {
t.Errorf("buildNodeMap %s: %v", test.fname, err)
continue
}
g := newGenerator(test.fileID, nodes, test.opts)
if err := g.defineFile(); err != nil {
t.Errorf("defineFile %s %+v: %v", test.fname, test.opts, err)
continue
}
src := g.generate()
if _, err := parser.ParseFile(token.NewFileSet(), test.fname+".go", src, 0); err != nil {
// TODO(light): log src
t.Errorf("generate %s %+v failed to parse: %v", test.fname, test.opts, err)
}
// Generation should be deterministic between runs.
for i := 0; i < iterations-1; i++ {
g := newGenerator(test.fileID, nodes, test.opts)
if err := g.defineFile(); err != nil {
t.Errorf("defineFile %s %+v [iteration %d]: %v", test.fname, test.opts, i+2, err)
continue
}
src2 := g.generate()
if !bytes.Equal(src, src2) {
t.Errorf("defineFile %s %+v [iteration %d] did not match iteration 1: non-deterministic", test.fname, test.opts, i+2)
}
}
}
}