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authorWim <wim@42.be>2020-08-10 00:29:54 +0200
committerGitHub <noreply@github.com>2020-08-10 00:29:54 +0200
commit4e50fd864921c556988c919269448efdb90fa961 (patch)
treea3625f03f8de3c4f3841364000a4ea3aa42c1533 /vendor/github.com/francoispqt/gojay/decode_number.go
parentdfdffa0027334e55ce213fc6eb62206dbf48baf6 (diff)
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Use mattermost v5 module (#1192)
Diffstat (limited to 'vendor/github.com/francoispqt/gojay/decode_number.go')
-rw-r--r--vendor/github.com/francoispqt/gojay/decode_number.go118
1 files changed, 118 insertions, 0 deletions
diff --git a/vendor/github.com/francoispqt/gojay/decode_number.go b/vendor/github.com/francoispqt/gojay/decode_number.go
new file mode 100644
index 00000000..0042b471
--- /dev/null
+++ b/vendor/github.com/francoispqt/gojay/decode_number.go
@@ -0,0 +1,118 @@
+package gojay
+
+import (
+ "math"
+)
+
+var digits []int8
+
+const maxInt64toMultiply = math.MaxInt64 / 10
+const maxInt32toMultiply = math.MaxInt32 / 10
+const maxInt16toMultiply = math.MaxInt16 / 10
+const maxInt8toMultiply = math.MaxInt8 / 10
+const maxUint8toMultiply = math.MaxUint8 / 10
+const maxUint16toMultiply = math.MaxUint16 / 10
+const maxUint32toMultiply = math.MaxUint32 / 10
+const maxUint64toMultiply = math.MaxUint64 / 10
+const maxUint32Length = 10
+const maxUint64Length = 20
+const maxUint16Length = 5
+const maxUint8Length = 3
+const maxInt32Length = 10
+const maxInt64Length = 19
+const maxInt16Length = 5
+const maxInt8Length = 3
+const invalidNumber = int8(-1)
+
+var pow10uint64 = [21]uint64{
+ 0,
+ 1,
+ 10,
+ 100,
+ 1000,
+ 10000,
+ 100000,
+ 1000000,
+ 10000000,
+ 100000000,
+ 1000000000,
+ 10000000000,
+ 100000000000,
+ 1000000000000,
+ 10000000000000,
+ 100000000000000,
+ 1000000000000000,
+ 10000000000000000,
+ 100000000000000000,
+ 1000000000000000000,
+ 10000000000000000000,
+}
+
+var skipNumberEndCursorIncrement [256]int
+
+func init() {
+ digits = make([]int8, 256)
+ for i := 0; i < len(digits); i++ {
+ digits[i] = invalidNumber
+ }
+ for i := int8('0'); i <= int8('9'); i++ {
+ digits[i] = i - int8('0')
+ }
+
+ for i := 0; i < 256; i++ {
+ switch i {
+ case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '.', 'e', 'E', '+', '-':
+ skipNumberEndCursorIncrement[i] = 1
+ }
+ }
+}
+
+func (dec *Decoder) skipNumber() (int, error) {
+ end := dec.cursor + 1
+ // look for following numbers
+ for j := dec.cursor + 1; j < dec.length || dec.read(); j++ {
+ end += skipNumberEndCursorIncrement[dec.data[j]]
+
+ switch dec.data[j] {
+ case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '.', 'e', 'E', '+', '-', ' ', '\n', '\t', '\r':
+ continue
+ case ',', '}', ']':
+ return end, nil
+ default:
+ // invalid json we expect numbers, dot (single one), comma, or spaces
+ return end, dec.raiseInvalidJSONErr(dec.cursor)
+ }
+ }
+
+ return end, nil
+}
+
+func (dec *Decoder) getExponent() (int64, error) {
+ start := dec.cursor
+ end := dec.cursor
+ for ; dec.cursor < dec.length || dec.read(); dec.cursor++ {
+ switch dec.data[dec.cursor] { // is positive
+ case '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
+ end = dec.cursor + 1
+ case '-':
+ dec.cursor++
+ exp, err := dec.getExponent()
+ return -exp, err
+ case '+':
+ dec.cursor++
+ return dec.getExponent()
+ default:
+ // if nothing return 0
+ // could raise error
+ if start == end {
+ return 0, dec.raiseInvalidJSONErr(dec.cursor)
+ }
+ return dec.atoi64(start, end-1), nil
+ }
+ }
+ if start == end {
+
+ return 0, dec.raiseInvalidJSONErr(dec.cursor)
+ }
+ return dec.atoi64(start, end-1), nil
+}