36 lines
777 B
Go
36 lines
777 B
Go
package core
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import (
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"strconv"
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"unicode/utf8"
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"git.akyoto.dev/cli/q/src/build/errors"
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"git.akyoto.dev/cli/q/src/build/token"
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)
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// Number tries to convert the token into a numeric value.
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func (f *Function) Number(t token.Token) (int, byte, error) {
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switch t.Kind {
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case token.Number:
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number, err := strconv.Atoi(t.Text(f.File.Bytes))
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return number, 8, err
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case token.Rune:
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r := t.Bytes(f.File.Bytes)
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r = r[1 : len(r)-1]
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if len(r) == 0 {
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return 0, 0, errors.New(errors.InvalidRune, f.File, t.Position+1)
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}
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number, size := utf8.DecodeRune(r)
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if len(r) > size {
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return 0, 0, errors.New(errors.InvalidRune, f.File, t.Position+1)
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}
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return int(number), byte(size), nil
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}
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return 0, 0, errors.New(errors.InvalidNumber, f.File, t.Position)
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}
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