diff options
Diffstat (limited to 'Godeps/_workspace/src/github.com/stretchr/objx/accessors.go')
-rw-r--r-- | Godeps/_workspace/src/github.com/stretchr/objx/accessors.go | 179 |
1 files changed, 0 insertions, 179 deletions
diff --git a/Godeps/_workspace/src/github.com/stretchr/objx/accessors.go b/Godeps/_workspace/src/github.com/stretchr/objx/accessors.go deleted file mode 100644 index 721bcac79..000000000 --- a/Godeps/_workspace/src/github.com/stretchr/objx/accessors.go +++ /dev/null @@ -1,179 +0,0 @@ -package objx - -import ( - "fmt" - "regexp" - "strconv" - "strings" -) - -// arrayAccesRegexString is the regex used to extract the array number -// from the access path -const arrayAccesRegexString = `^(.+)\[([0-9]+)\]$` - -// arrayAccesRegex is the compiled arrayAccesRegexString -var arrayAccesRegex = regexp.MustCompile(arrayAccesRegexString) - -// Get gets the value using the specified selector and -// returns it inside a new Obj object. -// -// If it cannot find the value, Get will return a nil -// value inside an instance of Obj. -// -// Get can only operate directly on map[string]interface{} and []interface. -// -// Example -// -// To access the title of the third chapter of the second book, do: -// -// o.Get("books[1].chapters[2].title") -func (m Map) Get(selector string) *Value { - rawObj := access(m, selector, nil, false, false) - return &Value{data: rawObj} -} - -// Set sets the value using the specified selector and -// returns the object on which Set was called. -// -// Set can only operate directly on map[string]interface{} and []interface -// -// Example -// -// To set the title of the third chapter of the second book, do: -// -// o.Set("books[1].chapters[2].title","Time to Go") -func (m Map) Set(selector string, value interface{}) Map { - access(m, selector, value, true, false) - return m -} - -// access accesses the object using the selector and performs the -// appropriate action. -func access(current, selector, value interface{}, isSet, panics bool) interface{} { - - switch selector.(type) { - case int, int8, int16, int32, int64, uint, uint8, uint16, uint32, uint64: - - if array, ok := current.([]interface{}); ok { - index := intFromInterface(selector) - - if index >= len(array) { - if panics { - panic(fmt.Sprintf("objx: Index %d is out of range. Slice only contains %d items.", index, len(array))) - } - return nil - } - - return array[index] - } - - return nil - - case string: - - selStr := selector.(string) - selSegs := strings.SplitN(selStr, PathSeparator, 2) - thisSel := selSegs[0] - index := -1 - var err error - - // https://github.com/stretchr/objx/issues/12 - if strings.Contains(thisSel, "[") { - - arrayMatches := arrayAccesRegex.FindStringSubmatch(thisSel) - - if len(arrayMatches) > 0 { - - // Get the key into the map - thisSel = arrayMatches[1] - - // Get the index into the array at the key - index, err = strconv.Atoi(arrayMatches[2]) - - if err != nil { - // This should never happen. If it does, something has gone - // seriously wrong. Panic. - panic("objx: Array index is not an integer. Must use array[int].") - } - - } - } - - if curMap, ok := current.(Map); ok { - current = map[string]interface{}(curMap) - } - - // get the object in question - switch current.(type) { - case map[string]interface{}: - curMSI := current.(map[string]interface{}) - if len(selSegs) <= 1 && isSet { - curMSI[thisSel] = value - return nil - } else { - current = curMSI[thisSel] - } - default: - current = nil - } - - if current == nil && panics { - panic(fmt.Sprintf("objx: '%v' invalid on object.", selector)) - } - - // do we need to access the item of an array? - if index > -1 { - if array, ok := current.([]interface{}); ok { - if index < len(array) { - current = array[index] - } else { - if panics { - panic(fmt.Sprintf("objx: Index %d is out of range. Slice only contains %d items.", index, len(array))) - } - current = nil - } - } - } - - if len(selSegs) > 1 { - current = access(current, selSegs[1], value, isSet, panics) - } - - } - - return current - -} - -// intFromInterface converts an interface object to the largest -// representation of an unsigned integer using a type switch and -// assertions -func intFromInterface(selector interface{}) int { - var value int - switch selector.(type) { - case int: - value = selector.(int) - case int8: - value = int(selector.(int8)) - case int16: - value = int(selector.(int16)) - case int32: - value = int(selector.(int32)) - case int64: - value = int(selector.(int64)) - case uint: - value = int(selector.(uint)) - case uint8: - value = int(selector.(uint8)) - case uint16: - value = int(selector.(uint16)) - case uint32: - value = int(selector.(uint32)) - case uint64: - value = int(selector.(uint64)) - default: - panic("objx: array access argument is not an integer type (this should never happen)") - } - - return value -} |