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refactor(fstab): Adapt fstab to new style; Adapting the parser
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Myzel394
parent
f6b825ebed
commit
1f4717deba
45
server/handlers/fstab/ast/fstab.go
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45
server/handlers/fstab/ast/fstab.go
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@ -0,0 +1,45 @@
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package ast
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import (
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"config-lsp/common"
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commonparser "config-lsp/common/parser"
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"github.com/emirpasic/gods/maps/treemap"
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)
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type FstabFieldName string
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const (
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FstabFieldSpec FstabFieldName = "spec"
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FstabFieldMountPoint FstabFieldName = "mountpoint"
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FstabFieldFileSystemType FstabFieldName = "filesystemtype"
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FstabFieldOptions FstabFieldName = "options"
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FstabFieldFreq FstabFieldName = "freq"
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FstabFieldPass FstabFieldName = "pass"
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)
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type FstabField struct {
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common.LocationRange
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Value commonparser.ParsedString
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}
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type FstabFields struct {
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common.LocationRange
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Spec *FstabField
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MountPoint *FstabField
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FilesystemType *FstabField
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Options *FstabField
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Freq *FstabField
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Pass *FstabField
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}
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type FstabEntry struct {
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Fields FstabFields
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}
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type FstabConfig struct {
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// [uint32]FstabEntry - line number to line mapping
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Entries *treemap.Map
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// [uint32]{} - line number to empty struct for comments
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CommentLines map[uint32]struct{}
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}
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159
server/handlers/fstab/ast/parser.go
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159
server/handlers/fstab/ast/parser.go
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@ -0,0 +1,159 @@
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package ast
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import (
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"config-lsp/common"
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commonparser "config-lsp/common/parser"
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"config-lsp/utils"
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"regexp"
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"github.com/emirpasic/gods/maps/treemap"
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gods "github.com/emirpasic/gods/utils"
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)
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func NewFstabConfig() *FstabConfig {
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config := &FstabConfig{}
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config.Clear()
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return config
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}
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func (c *FstabConfig) Clear() {
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c.Entries = treemap.NewWith(gods.UInt32Comparator)
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c.CommentLines = map[uint32]struct{}{}
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}
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var commentPattern = regexp.MustCompile(`^\s*#`)
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var emptyPattern = regexp.MustCompile(`^\s*$`)
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var whitespacePattern = regexp.MustCompile(`\S+`)
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func (c *FstabConfig) Parse(input string) []common.LSPError {
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errors := make([]common.LSPError, 0)
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lines := utils.SplitIntoLines(input)
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for rawLineNumber, line := range lines {
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lineNumber := uint32(rawLineNumber)
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if emptyPattern.MatchString(line) {
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continue
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}
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if commentPattern.MatchString(line) {
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c.CommentLines[lineNumber] = struct{}{}
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continue
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}
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errors = append(
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errors,
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c.parseStatement(lineNumber, line)...,
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)
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}
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return errors
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}
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func (c *FstabConfig) parseStatement(
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line uint32,
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input string,
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) []common.LSPError {
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fields := whitespacePattern.FindAllStringIndex(input, -1)
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if len(fields) == 0 {
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return []common.LSPError{
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{
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Range: common.LocationRange{
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Start: common.Location{
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Line: line,
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Character: 0,
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},
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End: common.Location{
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Line: line,
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Character: 0,
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},
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},
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},
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}
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}
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var spec *FstabField
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var mountPoint *FstabField
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var filesystemType *FstabField
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var options *FstabField
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var freq *FstabField
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var pass *FstabField
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switch len(fields) {
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case 6:
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pass = parseField(line, input, fields[5])
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fallthrough
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case 5:
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freq = parseField(line, input, fields[4])
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fallthrough
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case 4:
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options = parseField(line, input, fields[3])
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fallthrough
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case 3:
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filesystemType = parseField(line, input, fields[2])
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fallthrough
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case 2:
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mountPoint = parseField(line, input, fields[1])
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fallthrough
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case 1:
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spec = parseField(line, input, fields[0])
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}
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fstabLine := FstabEntry{
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Fields: FstabFields{
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LocationRange: common.LocationRange{
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Start: common.Location{
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Line: line,
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Character: 0,
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},
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End: common.Location{
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Line: line,
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Character: uint32(len(input)),
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},
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},
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Spec: spec,
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MountPoint: mountPoint,
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FilesystemType: filesystemType,
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Options: options,
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Freq: freq,
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Pass: pass,
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},
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}
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c.Entries.Put(line, fstabLine)
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return nil
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}
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func parseField(
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line uint32,
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input string,
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field []int,
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) *FstabField {
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start := uint32(field[0])
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end := uint32(field[1])
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value := input[start:end]
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return &FstabField{
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LocationRange: common.LocationRange{
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Start: common.Location{
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Line: line,
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Character: start,
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},
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End: common.Location{
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Line: line,
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Character: end,
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},
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},
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Value: commonparser.ParseRawString(value, commonparser.ParseFeatures{
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ParseEscapedCharacters: true,
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ParseDoubleQuotes: true,
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Replacements: &map[string]string{
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`\\040`: " ",
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},
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}),
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}
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}
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75
server/handlers/fstab/ast/parser_test.go
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75
server/handlers/fstab/ast/parser_test.go
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@ -0,0 +1,75 @@
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package ast
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import (
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"config-lsp/utils"
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"testing"
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)
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func TestExample1(
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t *testing.T,
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) {
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input := utils.Dedent(`
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LABEL=test /mnt/test ext4 defaults 0 0
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`)
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c := NewFstabConfig()
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errors := c.Parse(input)
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if len(errors) > 0 {
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t.Fatalf("Expected no errors, got %v", errors)
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}
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if c.Entries.Size() != 1 {
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t.Fatalf("Expected 1 entry, got %d", c.Entries.Size())
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}
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rawFirstEntry, _ := c.Entries.Get(uint32(0))
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firstEntry := rawFirstEntry.(FstabEntry)
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if !(firstEntry.Fields.Spec.Value.Value == "LABEL=test" && firstEntry.Fields.MountPoint.Value.Value == "/mnt/test" && firstEntry.Fields.FilesystemType.Value.Value == "ext4" && firstEntry.Fields.Options.Value.Value == "defaults" && firstEntry.Fields.Freq.Value.Value == "0" && firstEntry.Fields.Pass.Value.Value == "0") {
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t.Fatalf("Expected entry to be LABEL=test /mnt/test ext4 defaults 0 0, got %v", firstEntry)
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}
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if !(firstEntry.Fields.Spec.LocationRange.Start.Line == 0 && firstEntry.Fields.Spec.LocationRange.Start.Character == 0) {
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t.Errorf("Expected spec start to be 0:0, got %v", firstEntry.Fields.Spec.LocationRange.Start)
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}
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if !(firstEntry.Fields.Spec.LocationRange.End.Line == 0 && firstEntry.Fields.Spec.LocationRange.End.Character == 10) {
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t.Errorf("Expected spec end to be 0:10, got %v", firstEntry.Fields.Spec.LocationRange.End)
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}
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if !(firstEntry.Fields.MountPoint.LocationRange.Start.Line == 0 && firstEntry.Fields.MountPoint.LocationRange.Start.Character == 11) {
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t.Errorf("Expected mountpoint start to be 0:11, got %v", firstEntry.Fields.MountPoint.LocationRange.Start)
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}
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if !(firstEntry.Fields.MountPoint.LocationRange.End.Line == 0 && firstEntry.Fields.MountPoint.LocationRange.End.Character == 20) {
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t.Errorf("Expected mountpoint end to be 0:20, got %v", firstEntry.Fields.MountPoint.LocationRange.End)
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}
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if !(firstEntry.Fields.FilesystemType.LocationRange.Start.Line == 0 && firstEntry.Fields.FilesystemType.LocationRange.Start.Character == 21) {
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t.Errorf("Expected filesystemtype start to be 0:21, got %v", firstEntry.Fields.FilesystemType.LocationRange.Start)
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}
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if !(firstEntry.Fields.FilesystemType.LocationRange.End.Line == 0 && firstEntry.Fields.FilesystemType.LocationRange.End.Character == 25) {
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t.Errorf("Expected filesystemtype end to be 0:25, got %v", firstEntry.Fields.FilesystemType.LocationRange.End)
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}
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if !(firstEntry.Fields.Options.LocationRange.Start.Line == 0 && firstEntry.Fields.Options.LocationRange.Start.Character == 26) {
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t.Errorf("Expected options start to be 0:26, got %v", firstEntry.Fields.Options.LocationRange.Start)
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}
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if !(firstEntry.Fields.Options.LocationRange.End.Line == 0 && firstEntry.Fields.Options.LocationRange.End.Character == 34) {
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t.Errorf("Expected options end to be 0:34, got %v", firstEntry.Fields.Options.LocationRange.End)
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}
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if !(firstEntry.Fields.Freq.LocationRange.Start.Line == 0 && firstEntry.Fields.Freq.LocationRange.Start.Character == 35) {
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t.Errorf("Expected freq start to be 0:35, got %v", firstEntry.Fields.Freq.LocationRange.Start)
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}
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if !(firstEntry.Fields.Freq.LocationRange.End.Line == 0 && firstEntry.Fields.Freq.LocationRange.End.Character == 36) {
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t.Errorf("Expected freq end to be 0:36, got %v", firstEntry.Fields.Freq.LocationRange.End)
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}
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if !(firstEntry.Fields.Pass.LocationRange.Start.Line == 0 && firstEntry.Fields.Pass.LocationRange.Start.Character == 37) {
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t.Errorf("Expected pass start to be 0:37, got %v", firstEntry.Fields.Pass.LocationRange.Start)
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}
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}
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