summaryrefslogtreecommitdiff
path: root/vendor/github.com/exponent-io/jsonpath/pathaction.go
diff options
context:
space:
mode:
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/pathaction.go
parent2b74391cd5281f6fdf391ff8ad50fd1490f6bf89 (diff)
downloadpodman-a031b83a09a8628435317a03f199cdc18b78262f.tar.gz
podman-a031b83a09a8628435317a03f199cdc18b78262f.tar.bz2
podman-a031b83a09a8628435317a03f199cdc18b78262f.zip
Initial checkin from CRI-O repo
Signed-off-by: Matthew Heon <matthew.heon@gmail.com>
Diffstat (limited to 'vendor/github.com/exponent-io/jsonpath/pathaction.go')
-rw-r--r--vendor/github.com/exponent-io/jsonpath/pathaction.go61
1 files changed, 61 insertions, 0 deletions
diff --git a/vendor/github.com/exponent-io/jsonpath/pathaction.go b/vendor/github.com/exponent-io/jsonpath/pathaction.go
new file mode 100644
index 000000000..497ed686c
--- /dev/null
+++ b/vendor/github.com/exponent-io/jsonpath/pathaction.go
@@ -0,0 +1,61 @@
+package jsonpath
+
+// pathNode is used to construct a trie of paths to be matched
+type pathNode struct {
+ matchOn interface{} // string, or integer
+ childNodes []pathNode
+ action DecodeAction
+}
+
+// match climbs the trie to find a node that matches the given JSON path.
+func (n *pathNode) match(path JsonPath) *pathNode {
+ var node *pathNode = n
+ for _, ps := range path {
+ found := false
+ for i, n := range node.childNodes {
+ if n.matchOn == ps {
+ node = &node.childNodes[i]
+ found = true
+ break
+ } else if _, ok := ps.(int); ok && n.matchOn == AnyIndex {
+ node = &node.childNodes[i]
+ found = true
+ break
+ }
+ }
+ if !found {
+ return nil
+ }
+ }
+ return node
+}
+
+// PathActions represents a collection of DecodeAction functions that should be called at certain path positions
+// when scanning the JSON stream. PathActions can be created once and used many times in one or more JSON streams.
+type PathActions struct {
+ node pathNode
+}
+
+// DecodeAction handlers are called by the Decoder when scanning objects. See PathActions.Add for more detail.
+type DecodeAction func(d *Decoder) error
+
+// Add specifies an action to call on the Decoder when the specified path is encountered.
+func (je *PathActions) Add(action DecodeAction, path ...interface{}) {
+
+ var node *pathNode = &je.node
+ for _, ps := range path {
+ found := false
+ for i, n := range node.childNodes {
+ if n.matchOn == ps {
+ node = &node.childNodes[i]
+ found = true
+ break
+ }
+ }
+ if !found {
+ node.childNodes = append(node.childNodes, pathNode{matchOn: ps})
+ node = &node.childNodes[len(node.childNodes)-1]
+ }
+ }
+ node.action = action
+}