mirror of https://github.com/goccy/go-json.git
84 lines
1.5 KiB
Go
84 lines
1.5 KiB
Go
package json
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import (
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"errors"
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)
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var (
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isWhiteSpace = [256]bool{}
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)
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func init() {
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isWhiteSpace[' '] = true
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isWhiteSpace['\n'] = true
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isWhiteSpace['\t'] = true
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isWhiteSpace['\r'] = true
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}
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func skipWhiteSpace(buf []byte, cursor int) int {
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LOOP:
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if isWhiteSpace[buf[cursor]] {
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cursor++
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goto LOOP
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}
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return cursor
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}
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func skipValue(buf []byte, cursor int) (int, error) {
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cursor = skipWhiteSpace(buf, cursor)
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braceCount := 0
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bracketCount := 0
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buflen := len(buf)
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for {
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switch buf[cursor] {
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case '\000':
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return cursor, errors.New("unexpected error value")
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case '{':
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braceCount++
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case '[':
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bracketCount++
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case '}':
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braceCount--
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if braceCount == -1 && bracketCount == 0 {
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return cursor, nil
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}
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case ']':
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bracketCount--
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case ',':
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if bracketCount == 0 && braceCount == 0 {
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return cursor, nil
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}
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case '"':
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cursor++
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for ; cursor < buflen; cursor++ {
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if buf[cursor] != '"' {
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continue
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}
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if buf[cursor-1] == '\\' {
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continue
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}
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if bracketCount == 0 && braceCount == 0 {
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return cursor + 1, nil
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}
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break
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}
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case '-', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9':
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cursor++
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for ; cursor < buflen; cursor++ {
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tk := int(buf[cursor])
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if (int('0') <= tk && tk <= int('9')) || tk == '.' || tk == 'e' || tk == 'E' {
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continue
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}
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break
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}
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if bracketCount == 0 && braceCount == 0 {
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return cursor, nil
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}
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continue
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}
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cursor++
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}
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return cursor, errors.New("unexpected error value")
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}
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