84 lines
1.8 KiB
Go
84 lines
1.8 KiB
Go
package golinters
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import (
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"context"
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"errors"
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"fmt"
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"go/token"
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"strconv"
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"strings"
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"github.com/golangci/golangci-lint/pkg/lint/linter"
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"github.com/golangci/golangci-lint/pkg/result"
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)
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type TypeCheck struct{}
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func (TypeCheck) Name() string {
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return "typecheck"
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}
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func (TypeCheck) Desc() string {
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return "Like the front-end of a Go compiler, parses and type-checks Go code"
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}
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func (lint TypeCheck) parseError(srcErr error) (*result.Issue, error) {
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// TODO: cast srcErr to types.Error and just use it
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// file:line(<optional>:colon): message
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parts := strings.Split(srcErr.Error(), ":")
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if len(parts) < 3 {
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return nil, errors.New("too few colons")
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}
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file := parts[0]
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line, err := strconv.Atoi(parts[1])
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if err != nil {
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return nil, fmt.Errorf("can't parse line number %q: %s", parts[1], err)
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}
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var column int
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var message string
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if len(parts) == 3 { // no column
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message = parts[2]
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} else {
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column, err = strconv.Atoi(parts[2])
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if err == nil { // column was parsed
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message = strings.Join(parts[3:], ":")
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} else {
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message = strings.Join(parts[2:], ":")
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}
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}
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message = strings.TrimSpace(message)
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if message == "" {
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return nil, fmt.Errorf("empty message")
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}
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return &result.Issue{
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Pos: token.Position{
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Filename: file,
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Line: line,
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Column: column,
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},
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Text: markIdentifiers(message),
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FromLinter: lint.Name(),
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}, nil
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}
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func (lint TypeCheck) Run(ctx context.Context, lintCtx *linter.Context) ([]result.Issue, error) {
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var res []result.Issue
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for _, pkg := range lintCtx.NotCompilingPackages {
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for _, err := range pkg.Errors {
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i, perr := lint.parseError(err)
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if perr != nil {
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lintCtx.Log.Warnf("Can't parse type error %s: %s", err, perr)
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} else {
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res = append(res, *i)
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}
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}
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}
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return res, nil
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}
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