Leonardo de Moura
04b67f8b14
refactor(kernel/object): remove 'null' object, and operator bool for kernel objects
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-08 14:37:38 -08:00
Leonardo de Moura
2f88d6710c
feat(kernel/expr): add some_expr and none_expr for building values of type optional<expr>
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-08 10:34:38 -08:00
Leonardo de Moura
3e1fd06903
refactor(kernel/expr): remove 'null' expression, and operator bool for expression
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After this commit, a value of type 'expr' cannot be a reference to nullptr.
This commit also fixes several bugs due to the use of 'null' expressions.
TODO: do the same for kernel objects, sexprs, etc.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-07 23:21:10 -08:00
Leonardo de Moura
195ea24d71
refactor(kernel/type_checker): pass buffer<unification_constraint> as a pointer
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The idea is to make it an optional parameter independent of metavar_env.
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-07 10:27:11 -08:00
Leonardo de Moura
0c059a9917
feat(library/tactic): use _tac suffix instead of _tactic like Isabelle
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-05 20:06:32 -08:00
Leonardo de Moura
029ef57abd
feat(library/tactic): add apply_tactic
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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2013-12-05 03:22:12 -08:00
