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authorMatthew Heon <matthew.heon@gmail.com>2017-11-01 11:24:59 -0400
committerMatthew Heon <matthew.heon@gmail.com>2017-11-01 11:24:59 -0400
commita031b83a09a8628435317a03f199cdc18b78262f (patch)
treebc017a96769ce6de33745b8b0b1304ccf38e9df0 /vendor/github.com/exponent-io/jsonpath/path.go
parent2b74391cd5281f6fdf391ff8ad50fd1490f6bf89 (diff)
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Initial checkin from CRI-O repo
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Diffstat (limited to 'vendor/github.com/exponent-io/jsonpath/path.go')
-rw-r--r--vendor/github.com/exponent-io/jsonpath/path.go67
1 files changed, 67 insertions, 0 deletions
diff --git a/vendor/github.com/exponent-io/jsonpath/path.go b/vendor/github.com/exponent-io/jsonpath/path.go
new file mode 100644
index 000000000..d7db2ad33
--- /dev/null
+++ b/vendor/github.com/exponent-io/jsonpath/path.go
@@ -0,0 +1,67 @@
+// Extends the Go runtime's json.Decoder enabling navigation of a stream of json tokens.
+package jsonpath
+
+import "fmt"
+
+type jsonContext int
+
+const (
+ none jsonContext = iota
+ objKey
+ objValue
+ arrValue
+)
+
+// AnyIndex can be used in a pattern to match any array index.
+const AnyIndex = -2
+
+// JsonPath is a slice of strings and/or integers. Each string specifies an JSON object key, and
+// each integer specifies an index into a JSON array.
+type JsonPath []interface{}
+
+func (p *JsonPath) push(n interface{}) { *p = append(*p, n) }
+func (p *JsonPath) pop() { *p = (*p)[:len(*p)-1] }
+
+// increment the index at the top of the stack (must be an array index)
+func (p *JsonPath) incTop() { (*p)[len(*p)-1] = (*p)[len(*p)-1].(int) + 1 }
+
+// name the key at the top of the stack (must be an object key)
+func (p *JsonPath) nameTop(n string) { (*p)[len(*p)-1] = n }
+
+// infer the context from the item at the top of the stack
+func (p *JsonPath) inferContext() jsonContext {
+ if len(*p) == 0 {
+ return none
+ }
+ t := (*p)[len(*p)-1]
+ switch t.(type) {
+ case string:
+ return objKey
+ case int:
+ return arrValue
+ default:
+ panic(fmt.Sprintf("Invalid stack type %T", t))
+ }
+}
+
+// Equal tests for equality between two JsonPath types.
+func (p *JsonPath) Equal(o JsonPath) bool {
+ if len(*p) != len(o) {
+ return false
+ }
+ for i, v := range *p {
+ if v != o[i] {
+ return false
+ }
+ }
+ return true
+}
+
+func (p *JsonPath) HasPrefix(o JsonPath) bool {
+ for i, v := range o {
+ if v != (*p)[i] {
+ return false
+ }
+ }
+ return true
+}