48 lines
1.1 KiB
Go
48 lines
1.1 KiB
Go
package parser
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import "git.tebibyte.media/sashakoshka/arf/file"
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import "git.tebibyte.media/sashakoshka/arf/lexer"
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// parseMeta parsese the metadata header at the top of an arf file.
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func (parser *ParsingOperation) parseMeta () (err error) {
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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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err = parser.nextToken(lexer.TokenKindNewline)
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if err != nil { return }
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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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file.ErrorKindError)
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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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err = parser.nextToken()
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if err != nil { return }
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}
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}
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