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z3/lib/cmd_util.cpp
Leonardo de Moura e9eab22e5c Z3 sources
Signed-off-by: Leonardo de Moura <leonardo@microsoft.com>
2012-10-02 11:35:25 -07:00

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/*++
Copyright (c) 2011 Microsoft Corporation
Module Name:
cmd_util.cpp
Abstract:
Macros for definining new SMT2 front-end cmds.
Author:
Leonardo (leonardo) 2011-04-01
Notes:
--*/
#include"cmd_context.h"
ast * get_ast_ref(cmd_context & ctx, symbol const & v) {
object_ref * r = ctx.find_object_ref(v);
SASSERT(r != 0);
if (r->kind() != ast_object_ref::cls_kind())
throw cmd_exception("global variable does not reference an AST");
return static_cast<ast_object_ref*>(r)->get_ast();
}
expr * get_expr_ref(cmd_context & ctx, symbol const & v) {
ast * r = get_ast_ref(ctx, v);
if (!is_expr(r))
throw cmd_exception("global variable does not reference a term");
return to_expr(r);
}
void store_expr_ref(cmd_context & ctx, symbol const & v, expr * t) {
ctx.insert(v, alloc(ast_object_ref, ctx, t));
}