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add line/pos information for pattern warnings. Issue #607

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Signed-off-by: Nikolaj Bjorner <nbjorner@microsoft.com>
This commit is contained in:
Nikolaj Bjorner 2016-05-16 08:59:58 -07:00
parent 69ccc02931
commit 6f5785338a
5 changed files with 21 additions and 18 deletions
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2
src/api/api_quant.cpp
View file

@ -72,7 +72,7 @@ extern "C" {
expr * const* no_ps = reinterpret_cast<expr * const*>(no_patterns);
pattern_validator v(mk_c(c)->m());
for (unsigned i = 0; i < num_patterns; i++) {
if (!v(num_decls, ps[i])) {
if (!v(num_decls, ps[i], 0, 0)) {
SET_ERROR_CODE(Z3_INVALID_PATTERN);
return 0;
}

4
src/parsers/smt/smtparser.cpp
View file

@ -1574,7 +1574,7 @@ private:
}
}
expr * p = m_manager.mk_pattern(ts.size(), (app*const*)(ts.c_ptr()));
if (!p || (!ignore_user_patterns() && !m_pattern_validator(num_bindings, p))) {
if (!p || (!ignore_user_patterns() && !m_pattern_validator(num_bindings, p, children[0]->line(), children[0]->pos()))) {
set_error("invalid pattern", children[0]);
return false;
}
@ -1583,7 +1583,7 @@ private:
else if (children[0]->string() == symbol("ex_act") && ts.size() == 1) {
app * sk_hack = m_manager.mk_app(m_sk_hack, 1, ts.c_ptr());
expr * p = m_manager.mk_pattern(1, &sk_hack);
if (!p || (!ignore_user_patterns() && !m_pattern_validator(num_bindings, p))) {
if (!p || (!ignore_user_patterns() && !m_pattern_validator(num_bindings, p, children[0]->line(), children[0]->pos()))) {
set_error("invalid pattern", children[0]);
return false;
}

2
src/parsers/smt2/smt2parser.cpp
View file

@ -1605,7 +1605,7 @@ namespace smt2 {
unsigned j = begin_pats;
for (unsigned i = begin_pats; i < end_pats; i++) {
expr * pat = pattern_stack().get(i);
if (!pat_validator()(num_decls, pat)) {
if (!pat_validator()(num_decls, pat, m_scanner.get_line(), m_scanner.get_pos())) {
if (!ignore_bad_patterns())
throw parser_exception("invalid pattern");
continue;

25
src/parsers/util/pattern_validation.cpp
View file

@ -31,16 +31,19 @@ struct pattern_validation_functor {
bool m_found_a_var;
family_id m_bfid;
family_id m_lfid;
unsigned m_line, m_pos;
pattern_validation_functor(uint_set & found_vars, unsigned num_bindings, unsigned num_new_bindings,
family_id bfid, family_id lfid):
family_id bfid, family_id lfid, unsigned line, unsigned pos):
m_found_vars(found_vars),
m_num_bindings(num_bindings),
m_num_new_bindings(num_new_bindings),
m_result(true),
m_found_a_var(false),
m_bfid(bfid),
m_lfid(lfid) {
m_lfid(lfid),
m_line(line),
m_pos(pos) {
}
bool is_forbidden(func_decl const * decl) {
@ -55,7 +58,7 @@ struct pattern_validation_functor {
void operator()(app * n) {
func_decl * decl = to_app(n)->get_decl();
if (is_forbidden(decl)) {
warning_msg("'%s' cannot be used in patterns.", decl->get_name().str().c_str());
warning_msg("(%d,%d): '%s' cannot be used in patterns.", m_line, m_pos, decl->get_name().str().c_str());
m_result = false;
}
}
@ -63,7 +66,7 @@ struct pattern_validation_functor {
void operator()(var * v) {
unsigned idx = to_var(v)->get_idx();
if (idx >= m_num_bindings) {
warning_msg("free variables cannot be used in patterns.");
warning_msg("(%d,%d): free variables cannot be used in patterns.", m_line, m_pos);
m_result = false;
return;
}
@ -76,30 +79,30 @@ struct pattern_validation_functor {
void operator()(quantifier * q) { m_result = false; }
};
bool pattern_validator::process(uint_set & found_vars, unsigned num_bindings, unsigned num_new_bindings, expr * n) {
bool pattern_validator::process(uint_set & found_vars, unsigned num_bindings, unsigned num_new_bindings, expr * n, unsigned line, unsigned pos) {
// I'm traversing the DAG as a tree, this is not a problem since pattern are supposed to be small ASTs.
if (n->get_kind() == AST_VAR) {
warning_msg("invalid pattern: variable.");
warning_msg("(%d,%d): invalid pattern: variable.", line, pos);
return false;
}
pattern_validation_functor f(found_vars, num_bindings, num_new_bindings, m_bfid, m_lfid);
pattern_validation_functor f(found_vars, num_bindings, num_new_bindings, m_bfid, m_lfid, line, pos);
for_each_expr(f, n);
if (!f.m_result)
return false;
if (!f.m_found_a_var) {
warning_msg("pattern does not contain any variable.");
warning_msg("(%d,%d): pattern does not contain any variable.", line, pos);
return false;
}
return true;
}
bool pattern_validator::operator()(unsigned num_bindings, unsigned num_new_bindings, expr * n) {
bool pattern_validator::operator()(unsigned num_bindings, unsigned num_new_bindings, expr * n, unsigned line, unsigned pos) {
uint_set found_vars;
if (!process(found_vars, num_bindings, num_new_bindings, n))
if (!process(found_vars, num_bindings, num_new_bindings, n, line, pos))
return false;
bool r = found_vars.num_elems() == num_new_bindings;
if (!r)
warning_msg("pattern does not contain all quantified variables.");
warning_msg("(%d,%d): pattern does not contain all quantified variables.", line, pos);
return r;
}

6
src/parsers/util/pattern_validation.h
View file

@ -27,7 +27,7 @@ class pattern_validator {
family_id m_bfid;
family_id m_lfid;
bool process(uint_set & found_vars, unsigned num_bindings, unsigned num_new_bindings, expr * n);
bool process(uint_set & found_vars, unsigned num_bindings, unsigned num_new_bindings, expr * n, unsigned line, unsigned pos);
public:
pattern_validator(ast_manager const & m):
@ -35,8 +35,8 @@ public:
m_lfid(m.get_label_family_id()) {
}
bool operator()(unsigned num_bindings, unsigned num_new_bindings, expr * n);
bool operator()(unsigned num_new_bindings, expr * n) { return operator()(UINT_MAX, num_new_bindings, n); }
bool operator()(unsigned num_bindings, unsigned num_new_bindings, expr * n, unsigned line, unsigned pos);
bool operator()(unsigned num_new_bindings, expr * n, unsigned line, unsigned pos) { return operator()(UINT_MAX, num_new_bindings, n, line, pos); }
};
#endif /* PATTERN_VALIDATION_H_ */