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Added is_unique_value. Its semantics is equal to the old is_value method. The contract for is_value changed. See comments at ast.h for more information.

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Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
This commit is contained in:
Leonardo de Moura 2012-12-07 12:53:51 -08:00
parent bd0366eef7
commit a07b459fdf
19 changed files with 157 additions and 50 deletions
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2
src/ast/rewriter/bool_rewriter.cpp
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@ -732,7 +732,7 @@ br_status bool_rewriter::mk_distinct_core(unsigned num_args, expr * const * args
return BR_DONE;
}
visited.mark(arg);
if (!m().is_value(arg))
if (!m().is_unique_value(arg))
all_value = false;
}
if (all_value) {

7
src/ast/rewriter/th_rewriter.cpp
View file

@ -200,7 +200,12 @@ struct th_rewriter_cfg : public default_rewriter_cfg {
expr * mk_eq_value(expr * lhs, expr * value) {
SASSERT(m().is_value(value));
if (m().is_value(lhs)) {
return lhs == value ? m().mk_true() : m().mk_false();
if (m().are_equal(lhs, value)) {
return m().mk_true();
}
else if (m().are_distinct(lhs, value)) {
return m().mk_false();
}
}
return m().mk_eq(lhs, value);
}