98 lines
2.3 KiB
Go
98 lines
2.3 KiB
Go
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package yaml
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import (
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"errors"
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"fmt"
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)
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// Error is an error implementation used to report errors that correspond to
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// a particular position in an input buffer.
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type Error struct {
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cause error
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Line, Column int
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}
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func (e Error) Error() string {
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return fmt.Sprintf("on line %d, column %d: %s", e.Line, e.Column, e.cause.Error())
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}
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// Cause is an implementation of the interface used by
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// github.com/pkg/errors.Cause, returning the underlying error without the
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// position information.
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func (e Error) Cause() error {
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return e.cause
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}
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// WrappedErrors is an implementation of github.com/hashicorp/errwrap.Wrapper
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// returning the underlying error without the position information.
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func (e Error) WrappedErrors() []error {
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return []error{e.cause}
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}
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func parserError(p *yaml_parser_t) error {
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var cause error
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if len(p.problem) > 0 {
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cause = errors.New(p.problem)
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} else {
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cause = errors.New("invalid YAML syntax") // useless generic error, then
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}
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return parserErrorWrap(p, cause)
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}
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func parserErrorWrap(p *yaml_parser_t, cause error) error {
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switch {
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case p.problem_mark.line != 0:
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line := p.problem_mark.line
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column := p.problem_mark.column
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// Scanner errors don't iterate line before returning error
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if p.error == yaml_SCANNER_ERROR {
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line++
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column = 0
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}
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return Error{
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cause: cause,
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Line: line,
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Column: column + 1,
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}
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case p.context_mark.line != 0:
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return Error{
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cause: cause,
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Line: p.context_mark.line,
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Column: p.context_mark.column + 1,
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}
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default:
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return cause
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}
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}
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func parserErrorf(p *yaml_parser_t, f string, vals ...interface{}) error {
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return parserErrorWrap(p, fmt.Errorf(f, vals...))
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}
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func parseEventErrorWrap(evt *yaml_event_t, cause error) error {
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if evt.start_mark.line == 0 {
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// Event does not have a start mark, so we won't wrap the error at all
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return cause
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}
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return Error{
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cause: cause,
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Line: evt.start_mark.line,
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Column: evt.start_mark.column + 1,
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}
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}
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func parseEventErrorf(evt *yaml_event_t, f string, vals ...interface{}) error {
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return parseEventErrorWrap(evt, fmt.Errorf(f, vals...))
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}
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func emitterError(e *yaml_emitter_t) error {
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var cause error
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if len(e.problem) > 0 {
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cause = errors.New(e.problem)
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} else {
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cause = errors.New("failed to write YAML token") // useless generic error, then
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}
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return cause
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}
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