mirror of
https://github.com/ii64/sonic.git
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f9d033d6f8
* feat (decoder): support streaming IO * opt: fine tune buffer size factors * feat (encoder): support streaming IO * doc: refactor format and add comments * fix: io.EOF dead loop * build: adjust CI files * doc: update README.md
131 lines
2.8 KiB
Go
131 lines
2.8 KiB
Go
/*
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* Copyright 2021 ByteDance Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package decoder
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import (
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`encoding/json`
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`errors`
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`fmt`
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`reflect`
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`strconv`
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`strings`
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`github.com/bytedance/sonic/internal/native/types`
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`github.com/bytedance/sonic/internal/rt`
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)
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type SyntaxError struct {
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Pos int
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Src string
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Code types.ParsingError
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Msg string
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}
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func (self SyntaxError) Error() string {
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return fmt.Sprintf("%q", self.Description())
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}
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func (self SyntaxError) Description() string {
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i := 16
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p := self.Pos - i
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q := self.Pos + i
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/* check for empty source */
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if self.Src == "" {
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return fmt.Sprintf("no sources available: %#v", self)
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}
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/* prevent slicing before the beginning */
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if p < 0 {
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p, q, i = 0, q - p, i + p
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}
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/* prevent slicing beyond the end */
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if n := len(self.Src); q > n {
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n = q - n
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q = len(self.Src)
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/* move the left bound if possible */
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if p > n {
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i += n
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p -= n
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}
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}
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/* left and right length */
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x := clamp_zero(i)
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y := clamp_zero(q - p - i - 1)
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/* compose the error description */
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return fmt.Sprintf(
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"Syntax error at index %d: %s\n\n\t%s\n\t%s^%s\n",
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self.Pos,
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self.Message(),
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self.Src[p:q],
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strings.Repeat(".", x),
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strings.Repeat(".", y),
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)
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}
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func (self SyntaxError) Message() string {
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if self.Msg == "" {
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return self.Code.Message()
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}
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return self.Msg
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}
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func clamp_zero(v int) int {
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if v < 0 {
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return 0
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} else {
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return v
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}
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}
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/** JIT Error Helpers **/
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var stackOverflow = &json.UnsupportedValueError {
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Str : "Value nesting too deep",
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Value : reflect.ValueOf("..."),
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}
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//go:nosplit
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func error_wrap(src string, pos int, code types.ParsingError) error {
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return SyntaxError {
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Pos : pos,
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Src : src,
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Code : code,
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}
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}
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//go:nosplit
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func error_type(vt *rt.GoType) error {
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return &json.UnmarshalTypeError{Type: vt.Pack()}
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}
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//go:nosplit
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func error_field(name string) error {
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return errors.New("json: unknown field " + strconv.Quote(name))
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}
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//go:nosplit
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func error_value(value string, vtype reflect.Type) error {
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return &json.UnmarshalTypeError {
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Type : vtype,
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Value : value,
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}
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}
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