7 Commits

Author SHA1 Message Date
amery fa9a7b4735 basic: rename and document queue related methods
Signed-off-by: Alejandro Mery <amery@jpi.io>
2023-09-04 17:37:09 +00:00
amery cfd4a94559 basic: call executeFinal() when OnToken() fails
Signed-off-by: Alejandro Mery <amery@jpi.io>
2023-09-04 17:37:09 +00:00
amery d8af7821e4 Merge pull request 'parser: introduce NewError() and ErrPlusPosition()' (#8)
Reviewed-on: #8
2023-09-04 19:33:24 +02:00
amery 8f3e59ec36 parser: introduce ErrPlusPosition to apply a position offset to a lexer.Error
Signed-off-by: Alejandro Mery <amery@jpi.io>
2023-09-04 15:25:20 +00:00
amery d316031c44 basic: cleanup using parser.NewError()
Signed-off-by: Alejandro Mery <amery@jpi.io>
2023-09-04 15:25:20 +00:00
amery c3883cbb0d parser: introduce NewError() to create lexer.Error using lexer.Position
Signed-off-by: Alejandro Mery <amery@jpi.io>
2023-09-04 15:16:43 +00:00
amery 314c004efd Merge pull request 'parser: introduce TextParser and refactor Parser' (#7)
Reviewed-on: #7
2023-09-04 16:17:04 +02:00
9 changed files with 23 additions and 278 deletions
-7
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@@ -1,7 +0,0 @@
{
"cSpell.words": [
"asciigoat",
"Subname",
"unescapes"
]
}
+3 -12
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@@ -4,28 +4,19 @@ import (
"errors" "errors"
"asciigoat.org/core/lexer" "asciigoat.org/core/lexer"
"asciigoat.org/ini/parser"
) )
var ( var (
errInvalidToken = errors.New("invalid token") errInvalidToken = errors.New("invalid token")
) )
func newError(pos lexer.Position, content, hint string, err error) *lexer.Error {
return &lexer.Error{
Line: pos.Line,
Column: pos.Column,
Content: content,
Hint: hint,
Err: err,
}
}
func newErrInvalidToken(t *token) *lexer.Error { func newErrInvalidToken(t *token) *lexer.Error {
return newError(t.pos, t.value, "", errInvalidToken) return parser.NewError(t.pos, t.value, "", errInvalidToken)
} }
func (dec *decoder) OnError(pos lexer.Position, content string, err error) error { func (dec *decoder) OnError(pos lexer.Position, content string, err error) error {
err = newError(pos, content, "", err) err = parser.NewError(pos, content, "", err)
dec.executeFinal() dec.executeFinal()
return err return err
} }
-5
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@@ -2,11 +2,6 @@ module asciigoat.org/ini
go 1.19 go 1.19
replace (
asciigoat.org/core => ../core
darvaza.org/core => ../../darvaza.org/core
)
require ( require (
asciigoat.org/core v0.3.9 asciigoat.org/core v0.3.9
github.com/mgechev/revive v1.3.3 github.com/mgechev/revive v1.3.3
+2
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@@ -1,3 +1,5 @@
asciigoat.org/core v0.3.9 h1:hgDDz4ecm3ZvehX++m8A/IzAt+B5oDPiRtxatzfUHPQ=
asciigoat.org/core v0.3.9/go.mod h1:CAaHwyw8MpAq4a1MYtN2dxJrsK+hmIdW50OndaQZYPI=
github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8= github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8=
github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ= github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
github.com/chavacava/garif v0.1.0 h1:2JHa3hbYf5D9dsgseMKAmc/MZ109otzgNFk5s87H9Pc= github.com/chavacava/garif v0.1.0 h1:2JHa3hbYf5D9dsgseMKAmc/MZ109otzgNFk5s87H9Pc=
-90
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@@ -1,90 +0,0 @@
package parser
import (
"asciigoat.org/core/lexer"
)
type commaArrayParser struct {
TextParser
out []string
}
func (p *commaArrayParser) lexStart() (lexer.StateFn, error) {
for {
r, _, err := p.ReadRune()
switch {
case err != nil:
// EOF
return nil, err
case r == RuneQuotes:
// Quoted Value
return p.lexQuotedString, nil
case IsNewLine(r):
// new lines are acceptable when parsing a string for
// comma delimited arrays. but make sure we discard it
// complete
p.UnreadRune()
p.AcceptNewLine()
p.Discard()
case lexer.IsSpace(r):
// discard whitespace outside quotes
p.Discard()
default:
p.UnreadRune()
return p.lexWord, nil
}
}
}
func (p *commaArrayParser) lexWord() (lexer.StateFn, error) {
for {
r, _, err := p.ReadRune()
switch {
case err != nil:
// done. store what we got and move on
_, s := p.Emit()
p.out = append(p.out, s)
return nil, err
case r == RuneEscape:
// escaped
r2, _, err := p.ReadRune()
switch {
case err != nil:
// incomplete
return nil, NewErrIncompleteEscaped(&p.TextParser)
case IsNewLine(r2):
// escaped new line
p.UnreadRune()
p.AcceptNewLine()
}
}
}
}
func (p *commaArrayParser) lexQuotedString() (lexer.StateFn, error) {
s, err := lexQuotedString(&p.TextParser)
if err != nil {
return nil, err
}
p.Discard()
p.out = append(p.out, s)
return p.lexStart, nil
}
func (p *commaArrayParser) Run() ([]string, error) {
err := lexer.Run(p.lexStart)
return p.out, err
}
// SplitCommaArray splits
func SplitCommaArray(s string) ([]string, error) {
if s != "" {
var p commaArrayParser
p.InitString(s)
return p.Run()
}
return nil, nil
}
+12 -36
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@@ -1,11 +1,20 @@
package parser package parser
import ( import (
"io/fs"
"asciigoat.org/core/lexer" "asciigoat.org/core/lexer"
) )
// NewError creates a lexer.Error using a lexer.Position
func NewError(pos lexer.Position, content, hint string, err error) *lexer.Error {
return &lexer.Error{
Line: pos.Line,
Column: pos.Column,
Content: content,
Hint: hint,
Err: err,
}
}
// ErrPlusPosition returns a copy of the given [lexer.Error] // ErrPlusPosition returns a copy of the given [lexer.Error]
// offsetting the Line/Column information. // offsetting the Line/Column information.
func ErrPlusPosition(pos lexer.Position, e *lexer.Error) *lexer.Error { func ErrPlusPosition(pos lexer.Position, e *lexer.Error) *lexer.Error {
@@ -14,38 +23,5 @@ func ErrPlusPosition(pos lexer.Position, e *lexer.Error) *lexer.Error {
Column: e.Column, Column: e.Column,
}) })
return &lexer.Error{ return NewError(pos, e.Content, e.Hint, e.Err)
Line: pos.Line,
Column: pos.Column,
Content: e.Content,
Hint: e.Hint,
Err: e.Err,
}
}
// NewErrIncompleteQuotedString returns a [lexer.Error]
// indicating the quoted string being parsed wasn't correctly
// terminated
func NewErrIncompleteQuotedString(p *TextParser) *lexer.Error {
return newErrIncomplete(p, "incomplete quoted string")
}
// NewErrIncompleteEscaped returns a [lexer.Error]
// indicating the text being parsed wasn't correctly
// terminated
func NewErrIncompleteEscaped(p *TextParser) *lexer.Error {
return newErrIncomplete(p, "incomplete escaped string")
}
func newErrIncomplete(p *TextParser, hint string) *lexer.Error {
pos, s := p.Emit()
pos.Add(GetPositionalLength(s))
return &lexer.Error{
Line: pos.Line,
Column: pos.Column,
Content: s,
Hint: hint,
Err: fs.ErrInvalid,
}
} }
+2 -6
View File
@@ -7,13 +7,11 @@ import (
) )
const ( const (
RuneComment = ';' // RuneComment is the standard INI comment character RuneComment = ';' // RuneComment is the standard dosini comment character
RuneCommentExtra = '#' // RuneCommentExtra is UNIX shell's comment character RuneCommentExtra = '#' // RuneCommentExtra is UNIX shell's comment character
RuneSectionStart = '[' // RuneSectionStart indicates the start of a section declaration RuneSectionStart = '[' // RuneSectionStart indicates the start of a section declaration
RuneSectionEnd = ']' // RuneSectionEnd indicates the end of a section declaration RuneSectionEnd = ']' // RuneSectionEnd indiciates the end of a section declaration
RuneFieldEqual = '=' // RuneFieldEqual separates field keys from their values RuneFieldEqual = '=' // RuneFieldEqual separates field keys from their values
RuneQuotes = '"' // RuneQuotes indicates the start and end of a quoted value
RuneEscape = '\\' // RuneEscape indicates the next rune is escaped
) )
var ( var (
@@ -29,8 +27,6 @@ var (
RuneSectionStart, RuneSectionStart,
RuneSectionEnd, RuneSectionEnd,
RuneFieldEqual, RuneFieldEqual,
RuneQuotes,
RuneEscape,
}) })
) )
+1 -7
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@@ -31,13 +31,7 @@ func defaultOnToken(pos lexer.Position, typ TokenType, value string) error {
func defaultOnError(pos lexer.Position, content string, err error) error { func defaultOnError(pos lexer.Position, content string, err error) error {
log.Printf("%s:%v:%v: %q: %s", "error", pos.Line, pos.Column, content, err) log.Printf("%s:%v:%v: %q: %s", "error", pos.Line, pos.Column, content, err)
return lexer.Error{ return NewError(pos, content, "", err)
Line: pos.Line,
Column: pos.Column,
Content: content,
Err: err,
}
} }
func (p *Parser) setDefaults() { func (p *Parser) setDefaults() {
-112
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@@ -1,112 +0,0 @@
package parser
import (
"asciigoat.org/core/lexer"
)
// AcceptQuotedString consumes a quoted string from the source
// and returns it unquoted.
func (p *TextParser) AcceptQuotedString() (string, bool, error) {
r, _, err := p.ReadRune()
switch {
case err != nil:
// nothing here
return "", false, err
case r != RuneQuotes:
// not for us
p.UnreadRune()
return "", false, nil
default:
// let's roll
s, err := lexQuotedString(p)
switch {
case err != nil:
// bad quoted string
return "", false, err
default:
// success
return s, true, nil
}
}
}
func lexQuotedString(p *TextParser) (string, *lexer.Error) {
s, ok, err := lexQuotedStringNoEscape(p)
switch {
case err != nil:
return "", err
case ok:
return s, nil
default:
// escape character detected
return lexQuotedStringEscaped(p)
}
}
func lexQuotedStringNoEscape(p *TextParser) (string, bool, *lexer.Error) {
for {
r, _, err := p.ReadRune()
switch {
case err != nil:
// incomplete
return "", false, NewErrIncompleteQuotedString(p)
case r == RuneQuotes:
// end, just remove the quotes
s := p.String()
l := len(s)
return s[1 : l-2], true, nil
case r == RuneEscape:
// things just got complicated...
return "", false, nil
case IsNewLine(r):
// new lines within quoted values are acceptable
p.UnreadRune()
p.AcceptNewLine()
default:
// continue
}
}
}
func lexQuotedStringEscaped(*TextParser) (string, *lexer.Error) {
return "", nil
}
// // escaped. append partial
// mark = lexQuotedAppendPartial(p, &buf, mark)
//
// r2, _, err := p.ReadRune()
// switch {
// case err != nil:
// // incomplete
// return "", NewErrIncompleteQuotedString(p)
// case IsNewLine(r2):
// // escaped new line
// p.UnreadRune()
// p.AcceptNewLine()
// mark = lexQuotedAppendNewLine(p, &buf, mark)
// default:
// // bad escaped
// }
// Unquoted removes quotes and unescapes the content
func Unquoted(s string) (string, error) {
var p TextParser
if s == "" {
return "", nil
}
p.InitString(s)
unquoted, ok, err := p.AcceptQuotedString()
switch {
case err != nil:
// bad string
return "", err
case ok:
// success
return unquoted, nil
default:
// not quoted
return s, nil
}
}