/
bufcoreprotoparse.go
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/
bufcoreprotoparse.go
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// Copyright 2020 Buf Technologies, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package bufcoreprotoparse
import (
"context"
"io"
"github.com/bufbuild/buf/internal/buf/bufanalysis"
"github.com/bufbuild/buf/internal/buf/bufcore"
"github.com/bufbuild/buf/internal/buf/bufcore/bufmodule"
"github.com/bufbuild/buf/internal/pkg/normalpath"
"github.com/jhump/protoreflect/desc/protoparse"
)
// ParserAccessorHandler handles ParserAccessor operations for protoparse..
type ParserAccessorHandler interface {
// Open opens the given path, and tracks the external path and import status.
//
// This function can be used as a ParserAccessor for protoparse.
Open(path string) (io.ReadCloser, error)
// ExternalPath returns the external path for the input path.
//
// Returns the input path if the external path is not known.
ExternalPath(path string) string
// IsImport returns true if the path is an import.
IsImport(path string) bool
}
// NewParserAccessorHandler returns a new ParserAccessorHandler.
//
// The given module should be a bufmodule.ModuleFileSet for image builds, as it needs
// access to not just the target files, but all dependency files as well.
//
// For AST building, this can just be a bufmodule.Module.
func NewParserAccessorHandler(ctx context.Context, module bufmodule.Module) ParserAccessorHandler {
return newParserAccessorHandler(ctx, module)
}
// GetFileAnnotations gets the FileAnnotations for the ErrorWithPos errors.
func GetFileAnnotations(
ctx context.Context,
parserAccessorHandler ParserAccessorHandler,
errorsWithPos []protoparse.ErrorWithPos,
) ([]bufanalysis.FileAnnotation, error) {
fileAnnotations := make([]bufanalysis.FileAnnotation, 0, len(errorsWithPos))
for _, errorWithPos := range errorsWithPos {
fileAnnotation, err := GetFileAnnotation(
ctx,
parserAccessorHandler,
errorWithPos,
)
if err != nil {
return nil, err
}
fileAnnotations = append(fileAnnotations, fileAnnotation)
}
return fileAnnotations, nil
}
// GetFileAnnotation gets the FileAnnotation for the ErrorWithPos error.
func GetFileAnnotation(
ctx context.Context,
parserAccessorHandler ParserAccessorHandler,
errorWithPos protoparse.ErrorWithPos,
) (bufanalysis.FileAnnotation, error) {
var fileInfo bufcore.FileInfo
var startLine int
var startColumn int
var endLine int
var endColumn int
typeString := "COMPILE"
message := "Compile error."
// this should never happen
// maybe we should error
if errorWithPos.Unwrap() != nil {
message = errorWithPos.Unwrap().Error()
}
sourcePos := protoparse.SourcePos{}
if errorWithSourcePos, ok := errorWithPos.(protoparse.ErrorWithSourcePos); ok {
if pos := errorWithSourcePos.Pos; pos != nil {
sourcePos = *pos
}
}
if sourcePos.Filename != "" {
path, err := normalpath.NormalizeAndValidate(sourcePos.Filename)
if err != nil {
return nil, err
}
fileInfo, err = bufcore.NewFileInfo(
path,
parserAccessorHandler.ExternalPath(path),
parserAccessorHandler.IsImport(path),
)
if err != nil {
return nil, err
}
}
if sourcePos.Line > 0 {
startLine = sourcePos.Line
endLine = sourcePos.Line
}
if sourcePos.Col > 0 {
startColumn = sourcePos.Col
endColumn = sourcePos.Col
}
return bufanalysis.NewFileAnnotation(
fileInfo,
startLine,
startColumn,
endLine,
endColumn,
typeString,
message,
), nil
}