2022-08-12 18:33:21 +00:00
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package parser
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2022-08-12 21:22:51 +00:00
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import "git.tebibyte.media/sashakoshka/arf/lexer"
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2022-08-18 04:58:40 +00:00
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import "git.tebibyte.media/sashakoshka/arf/infoerr"
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2022-08-12 21:22:51 +00:00
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// parseMeta parsese the metadata header at the top of an arf file.
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2022-08-12 18:33:21 +00:00
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func (parser *ParsingOperation) parseMeta () (err error) {
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2022-08-12 21:22:51 +00:00
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for {
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err = parser.expect (
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lexer.TokenKindName,
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lexer.TokenKindSeparator)
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if err != nil { return }
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if parser.token.Is(lexer.TokenKindSeparator) {
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2022-08-15 02:38:57 +00:00
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err = parser.nextToken(lexer.TokenKindNewline)
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if err != nil { return }
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2022-08-12 21:22:51 +00:00
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err = parser.nextToken()
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return
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}
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field := parser.token.Value().(string)
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err = parser.nextToken(lexer.TokenKindString)
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if err != nil { return }
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value := parser.token.Value().(string)
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switch field {
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case "author":
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parser.tree.author = value
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case "license":
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parser.tree.license = value
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case "require":
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parser.tree.requires = append(parser.tree.requires, value)
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default:
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parser.token.NewError (
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"unrecognized metadata field: " + field,
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2022-08-18 04:58:40 +00:00
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infoerr.ErrorKindError)
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2022-08-12 21:22:51 +00:00
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}
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err = parser.nextToken(lexer.TokenKindNewline)
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if err != nil { return }
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2022-08-12 22:12:38 +00:00
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err = parser.nextToken()
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if err != nil { return }
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2022-08-12 21:22:51 +00:00
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}
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2022-08-12 18:33:21 +00:00
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}
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