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// Copyright 2019 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package cache
import (
"context"
"fmt"
"go/parser"
"go/token"
"path/filepath"
"cuelang.org/go/internal/golangorgx/gopls/cache/parsego"
"cuelang.org/go/internal/golangorgx/gopls/file"
)
// ParseGo parses the file whose contents are provided by fh.
// The resulting tree may have been fixed up.
// If the file is not available, returns nil and an error.
func (s *Snapshot) ParseGo(ctx context.Context, fh file.Handle, mode parser.Mode) (*ParsedGoFile, error) {
pgfs, err := s.view.parseCache.parseFiles(ctx, token.NewFileSet(), mode, false, fh)
if err != nil {
return nil, err
}
return pgfs[0], nil
}
// parseGoImpl parses the Go source file whose content is provided by fh.
func parseGoImpl(ctx context.Context, fset *token.FileSet, fh file.Handle, mode parser.Mode, purgeFuncBodies bool) (*ParsedGoFile, error) {
ext := filepath.Ext(fh.URI().Path())
if ext != ".go" && ext != "" { // files generated by cgo have no extension
return nil, fmt.Errorf("cannot parse non-Go file %s", fh.URI())
}
content, err := fh.Content()
if err != nil {
return nil, err
}
// Check for context cancellation before actually doing the parse.
if ctx.Err() != nil {
return nil, ctx.Err()
}
pgf, _ := parsego.Parse(ctx, fset, fh.URI(), content, mode, purgeFuncBodies)
return pgf, nil
}
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