145 lines
2.9 KiB
Go
145 lines
2.9 KiB
Go
//+build jsoniter_sloppy
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package jsoniter
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// sloppy but faster implementation, do not validate the input json
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func (iter *Iterator) skipNumber() {
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for {
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for i := iter.head; i < iter.tail; i++ {
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c := iter.buf[i]
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switch c {
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case ' ', '\n', '\r', '\t', ',', '}', ']':
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iter.head = i
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return
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}
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}
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if !iter.loadMore() {
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return
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}
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}
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}
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func (iter *Iterator) skipArray() {
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level := 1
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for {
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for i := iter.head; i < iter.tail; i++ {
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switch iter.buf[i] {
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case '"': // If inside string, skip it
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iter.head = i + 1
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iter.skipString()
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i = iter.head - 1 // it will be i++ soon
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case '[': // If open symbol, increase level
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level++
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case ']': // If close symbol, increase level
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level--
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// If we have returned to the original level, we're done
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if level == 0 {
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iter.head = i + 1
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return
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}
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}
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}
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if !iter.loadMore() {
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iter.ReportError("skipObject", "incomplete array")
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return
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}
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}
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}
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func (iter *Iterator) skipObject() {
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level := 1
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for {
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for i := iter.head; i < iter.tail; i++ {
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switch iter.buf[i] {
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case '"': // If inside string, skip it
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iter.head = i + 1
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iter.skipString()
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i = iter.head - 1 // it will be i++ soon
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case '{': // If open symbol, increase level
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level++
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case '}': // If close symbol, increase level
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level--
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// If we have returned to the original level, we're done
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if level == 0 {
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iter.head = i + 1
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return
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}
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}
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}
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if !iter.loadMore() {
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iter.ReportError("skipObject", "incomplete object")
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return
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}
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}
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}
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func (iter *Iterator) skipString() {
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for {
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end, escaped := iter.findStringEnd()
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if end == -1 {
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if !iter.loadMore() {
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iter.ReportError("skipString", "incomplete string")
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return
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}
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if escaped {
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iter.head = 1 // skip the first char as last char read is \
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}
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} else {
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iter.head = end
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return
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}
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}
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}
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// adapted from: https://github.com/buger/jsonparser/blob/master/parser.go
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// Tries to find the end of string
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// Support if string contains escaped quote symbols.
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func (iter *Iterator) findStringEnd() (int, bool) {
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escaped := false
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for i := iter.head; i < iter.tail; i++ {
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c := iter.buf[i]
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if c == '"' {
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if !escaped {
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return i + 1, false
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}
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j := i - 1
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for {
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if j < iter.head || iter.buf[j] != '\\' {
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// even number of backslashes
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// either end of buffer, or " found
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return i + 1, true
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}
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j--
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if j < iter.head || iter.buf[j] != '\\' {
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// odd number of backslashes
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// it is \" or \\\"
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break
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}
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j--
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}
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} else if c == '\\' {
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escaped = true
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}
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}
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j := iter.tail - 1
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for {
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if j < iter.head || iter.buf[j] != '\\' {
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// even number of backslashes
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// either end of buffer, or " found
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return -1, false // do not end with \
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}
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j--
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if j < iter.head || iter.buf[j] != '\\' {
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// odd number of backslashes
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// it is \" or \\\"
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break
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}
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j--
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}
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return -1, true // end with \
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}
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