63 lines
1.0 KiB
Go
63 lines
1.0 KiB
Go
package parser
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import (
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"bufio"
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"errors"
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"io"
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"regexp"
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)
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var (
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implRegex = regexp.MustCompile(`impl Perform.* for (.+) {`)
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respTypeRegex = regexp.MustCompile(`type Response = (.+);`)
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)
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var ErrNoType = errors.New("type line not found")
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type ImplParser struct {
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r *bufio.Reader
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}
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func NewImpl(r io.Reader) *ImplParser {
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return &ImplParser{
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r: bufio.NewReader(r),
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}
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}
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func (i *ImplParser) Parse() (map[string]string, error) {
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out := map[string]string{}
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for {
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line, err := i.r.ReadString('\n')
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if errors.Is(err, io.EOF) {
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break
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} else if err != nil {
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return nil, err
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}
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if implRegex.MatchString(line) {
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im := implRegex.FindStringSubmatch(line)
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line, err := i.r.ReadString('\n')
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if errors.Is(err, io.EOF) {
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return nil, io.ErrUnexpectedEOF
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} else if err != nil {
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return nil, err
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}
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if !respTypeRegex.MatchString(line) {
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return nil, ErrNoType
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}
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rtm := respTypeRegex.FindStringSubmatch(line)
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out[im[1]] = rtm[1]
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}
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}
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return out, nil
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}
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func (i *ImplParser) Reset(r io.Reader) {
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i.r.Reset(r)
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}
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