64 lines
1.6 KiB
Go
64 lines
1.6 KiB
Go
package parse
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import (
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"git.makaay.nl/mauricem/go-parsekit/parse"
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"git.makaay.nl/mauricem/go-parsekit/tokenize"
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)
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// Some globally useful tokenizer definitions.
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var (
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c, a, m, tok = tokenize.C, tokenize.A, tokenize.M, tokenize.T
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// Whitespace means tab (0x09) or space (0x20).
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// This matches the blanks as defined by parsekit.
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whitespace = a.Blanks.Optional()
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// Newline means LF (0x0A) or CRLF (0x0D0A).
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// This matches the newline as defined by parsekit.
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newline = a.Newline
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// Whitespace + newlines.
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// This matches the whitespace as defined by parsekit.
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whitespaceInclNewlines = a.Whitespace
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// A '#' hash symbol marks the rest of the line as a comment.
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// All characters up to the end of the line are included in the comment.
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comment = c.Seq(a.Hash, a.UntilEndOfLine)
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optionalComment = comment.Optional()
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endOfLineOrComment = c.Seq(whitespace, optionalComment, a.EndOfLine)
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whitespaceNewlinesOrComments = whitespaceInclNewlines.Or(comment)
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// Keys may be either bare or quoted.
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detectKey = c.Any(bareKeyRune, a.SingleQuote, a.DoubleQuote)
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// Both [tables] and [[arrays of tables]] start with a square open bracket.
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detectTable = a.SquareOpen
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)
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func (t *parser) startDocument(p *parse.API) {
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for {
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switch {
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case p.Skip(whitespaceNewlinesOrComments):
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// NOOP
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case p.Peek(detectKey):
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p.Handle(t.startKeyValuePair)
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case p.Peek(detectTable):
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p.Handle(t.startTable)
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case p.Skip(a.EndOfFile):
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p.Stop()
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default:
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p.Expected("key/value pair, table or array of tables")
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return
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}
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if p.IsStoppedOrInError() {
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return
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}
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}
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}
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