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return proper ast-option from get_const_interp function insetad of raising exceptions from inside the C API. Fixes discrepancy with documentation and behavior across extensions of the API. Issue #587

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-05-15 13:29:38 -07:00
parent e5ca676251
commit cd937c07f3
3 changed files with 8 additions and 3 deletions
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src/api/api_model.cpp
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@ -50,14 +50,13 @@ extern "C" {
Z3_CATCH;
}
Z3_ast Z3_API Z3_model_get_const_interp(Z3_context c, Z3_model m, Z3_func_decl a) {
Z3_ast_opt Z3_API Z3_model_get_const_interp(Z3_context c, Z3_model m, Z3_func_decl a) {
Z3_TRY;
LOG_Z3_model_get_const_interp(c, m, a);
RESET_ERROR_CODE();
CHECK_NON_NULL(m, 0);
expr * r = to_model_ref(m)->get_const_interp(to_func_decl(a));
if (!r) {
SET_ERROR_CODE(Z3_INVALID_ARG);
RETURN_Z3(0);
}
mk_c(c)->save_ast_trail(r);