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Last change
on this file since 1624 was
1515,
checked in by campbell, 9 years ago
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Add type of maps on positive binary numbers, and use them for identifers.
Also:
- fix interpretation for - on positives
- move eq_nat_dec to a more appropriate place
- split out costs from other identifiers in ASM
- use identifier abstractions in back-end
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File size:
582 bytes
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| 1 | |
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| 2 | (* Basic identifier definition. This is done separately from the rest of the |
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| 3 | definitions for identifiers so that error messages can use identifiers |
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| 4 | and the other definitions can use the error monad (without having to |
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| 5 | parametrise the monad by the type of error messages). *) |
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| 6 | |
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| 7 | include "basics/types.ma". |
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| 8 | include "ASM/String.ma". |
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| 9 | include "utilities/binary/positive.ma". |
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| 10 | |
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| 11 | (* identifiers and their generators are tagged to differentiate them, and to |
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| 12 | provide extra type checking. *) |
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| 13 | |
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| 14 | inductive identifier (tag:String) : Type[0] ≝ |
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| 15 | an_identifier : Pos → identifier tag. |
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