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path: root/src/pkg/json/generic.go
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Diffstat (limited to 'src/pkg/json/generic.go')
-rw-r--r--src/pkg/json/generic.go176
1 files changed, 115 insertions, 61 deletions
diff --git a/src/pkg/json/generic.go b/src/pkg/json/generic.go
index 9fa1ae550..7486db567 100644
--- a/src/pkg/json/generic.go
+++ b/src/pkg/json/generic.go
@@ -16,9 +16,9 @@ import (
// Integers identifying the data type in the Json interface.
const (
- StringKind = iota;
+ StringKind = iota;
NumberKind;
- MapKind; // JSON term is "Object", but in Go, it's a map
+ MapKind; // JSON term is "Object", but in Go, it's a map
ArrayKind;
BoolKind;
NullKind;
@@ -43,34 +43,64 @@ type Json interface {
// j.String() == `abc`, but JsonToString(j) == `"abc"`.
func JsonToString(j Json) string {
if j == nil {
- return "null"
+ return "null";
}
if j.Kind() == StringKind {
- return Quote(j.String())
+ return Quote(j.String());
}
- return j.String()
+ return j.String();
}
-type _Null struct { }
+type _Null struct{}
// Null is the JSON object representing the null data object.
var Null Json = &_Null{}
-func (*_Null) Kind() int { return NullKind }
-func (*_Null) String() string { return "null" }
-func (*_Null) Number() float64 { return 0 }
-func (*_Null) Bool() bool { return false }
-func (*_Null) Get(s string) Json { return Null }
-func (*_Null) Elem(int) Json { return Null }
-func (*_Null) Len() int { return 0 }
-
-type _String struct { s string; _Null }
-func (j *_String) Kind() int { return StringKind }
-func (j *_String) String() string { return j.s }
-
-type _Number struct { f float64; _Null }
-func (j *_Number) Kind() int { return NumberKind }
-func (j *_Number) Number() float64 { return j.f }
+func (*_Null) Kind() int {
+ return NullKind;
+}
+func (*_Null) String() string {
+ return "null";
+}
+func (*_Null) Number() float64 {
+ return 0;
+}
+func (*_Null) Bool() bool {
+ return false;
+}
+func (*_Null) Get(s string) Json {
+ return Null;
+}
+func (*_Null) Elem(int) Json {
+ return Null;
+}
+func (*_Null) Len() int {
+ return 0;
+}
+
+type _String struct {
+ s string;
+ _Null;
+}
+
+func (j *_String) Kind() int {
+ return StringKind;
+}
+func (j *_String) String() string {
+ return j.s;
+}
+
+type _Number struct {
+ f float64;
+ _Null;
+}
+
+func (j *_Number) Kind() int {
+ return NumberKind;
+}
+func (j *_Number) Number() float64 {
+ return j.f;
+}
func (j *_Number) String() string {
if math.Floor(j.f) == j.f {
return fmt.Sprintf("%.0f", j.f);
@@ -78,14 +108,22 @@ func (j *_Number) String() string {
return fmt.Sprintf("%g", j.f);
}
-type _Array struct { a *vector.Vector; _Null }
-func (j *_Array) Kind() int { return ArrayKind }
-func (j *_Array) Len() int { return j.a.Len() }
+type _Array struct {
+ a *vector.Vector;
+ _Null;
+}
+
+func (j *_Array) Kind() int {
+ return ArrayKind;
+}
+func (j *_Array) Len() int {
+ return j.a.Len();
+}
func (j *_Array) Elem(i int) Json {
if i < 0 || i >= j.a.Len() {
- return Null
+ return Null;
}
- return j.a.At(i).(Json)
+ return j.a.At(i).(Json);
}
func (j *_Array) String() string {
s := "[";
@@ -99,33 +137,49 @@ func (j *_Array) String() string {
return s;
}
-type _Bool struct { b bool; _Null }
-func (j *_Bool) Kind() int { return BoolKind }
-func (j *_Bool) Bool() bool { return j.b }
+type _Bool struct {
+ b bool;
+ _Null;
+}
+
+func (j *_Bool) Kind() int {
+ return BoolKind;
+}
+func (j *_Bool) Bool() bool {
+ return j.b;
+}
func (j *_Bool) String() string {
if j.b {
- return "true"
+ return "true";
}
- return "false"
+ return "false";
}
-type _Map struct { m map[string]Json; _Null }
-func (j *_Map) Kind() int { return MapKind }
-func (j *_Map) Len() int { return len(j.m) }
+type _Map struct {
+ m map[string]Json;
+ _Null;
+}
+
+func (j *_Map) Kind() int {
+ return MapKind;
+}
+func (j *_Map) Len() int {
+ return len(j.m);
+}
func (j *_Map) Get(s string) Json {
if j.m == nil {
- return Null
+ return Null;
}
v, ok := j.m[s];
if !ok {
- return Null
+ return Null;
}
return v;
}
func (j *_Map) String() string {
s := "{";
first := true;
- for k,v := range j.m {
+ for k, v := range j.m {
if first {
first = false;
} else {
@@ -152,7 +206,7 @@ func Walk(j Json, path string) Json {
var elem string;
if i := strings.Index(path, "/"); i >= 0 {
elem = path[0:i];
- path = path[i+1:len(path)];
+ path = path[i+1 : len(path)];
} else {
elem = path;
path = "";
@@ -161,16 +215,16 @@ func Walk(j Json, path string) Json {
case ArrayKind:
indx, err := strconv.Atoi(elem);
if err != nil {
- return Null
+ return Null;
}
j = j.Elem(indx);
case MapKind:
j = j.Get(elem);
default:
- return Null
+ return Null;
}
}
- return j
+ return j;
}
// Equal returns whether a and b are indistinguishable JSON objects.
@@ -208,7 +262,7 @@ func Equal(a, b Json) bool {
if len(m) != len(b.(*_Map).m) {
return false;
}
- for k,v := range m {
+ for k, v := range m {
if !Equal(v, b.Get(k)) {
return false;
}
@@ -225,15 +279,15 @@ func Equal(a, b Json) bool {
type _JsonBuilder struct {
// either writing to *ptr
- ptr *Json;
+ ptr *Json;
// or to a[i] (can't set ptr = &a[i])
- a *vector.Vector;
- i int;
+ a *vector.Vector;
+ i int;
// or to m[k] (can't set ptr = &m[k])
- m map[string] Json;
- k string;
+ m map[string]Json;
+ k string;
}
func (b *_JsonBuilder) Put(j Json) {
@@ -256,40 +310,40 @@ func (b *_JsonBuilder) Get() Json {
case b.m != nil:
return b.m[b.k];
}
- return nil
+ return nil;
}
func (b *_JsonBuilder) Float64(f float64) {
- b.Put(&_Number{f, _Null{}})
+ b.Put(&_Number{f, _Null{}});
}
func (b *_JsonBuilder) Int64(i int64) {
- b.Float64(float64(i))
+ b.Float64(float64(i));
}
func (b *_JsonBuilder) Uint64(i uint64) {
- b.Float64(float64(i))
+ b.Float64(float64(i));
}
func (b *_JsonBuilder) Bool(tf bool) {
- b.Put(&_Bool{tf, _Null{}})
+ b.Put(&_Bool{tf, _Null{}});
}
func (b *_JsonBuilder) Null() {
- b.Put(Null)
+ b.Put(Null);
}
func (b *_JsonBuilder) String(s string) {
- b.Put(&_String{s, _Null{}})
+ b.Put(&_String{s, _Null{}});
}
func (b *_JsonBuilder) Array() {
- b.Put(&_Array{vector.New(0), _Null{}})
+ b.Put(&_Array{vector.New(0), _Null{}});
}
func (b *_JsonBuilder) Map() {
- b.Put(&_Map{make(map[string]Json), _Null{}})
+ b.Put(&_Map{make(map[string]Json), _Null{}});
}
func (b *_JsonBuilder) Elem(i int) Builder {
@@ -297,9 +351,9 @@ func (b *_JsonBuilder) Elem(i int) Builder {
bb.a = b.Get().(*_Array).a;
bb.i = i;
for i >= bb.a.Len() {
- bb.a.Push(Null)
+ bb.a.Push(Null);
}
- return bb
+ return bb;
}
func (b *_JsonBuilder) Key(k string) Builder {
@@ -307,7 +361,7 @@ func (b *_JsonBuilder) Key(k string) Builder {
bb.m = b.Get().(*_Map).m;
bb.k = k;
bb.m[k] = Null;
- return bb
+ return bb;
}
// StringToJson parses the string s as a JSON-syntax string
@@ -321,9 +375,9 @@ func StringToJson(s string) (json Json, ok bool, errtok string) {
b.ptr = &j;
ok, _, errtok = Parse(s, b);
if !ok {
- return nil, false, errtok
+ return nil, false, errtok;
}
- return j, true, ""
+ return j, true, "";
}
// BUG(rsc): StringToJson should return an os.Error instead of a bool.
generated by cgit v1.2.3 (git 2.39.1) at 2025-04-28 19:14:01 +0000