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nunoplopesnunoplopes
committed
remove a few string copies
1 parent db5a1a7 commit b2d5c24

18 files changed

+39
-80
lines changed

‎src/api/api_ast.cpp

+2-4
Original file line numberDiff line numberDiff line change
@@ -146,8 +146,7 @@ extern "C" {
146146
ast_manager& m = mk_c(c)->m();
147147
recfun::decl::plugin& p = mk_c(c)->recfun().get_plugin();
148148
if (!p.has_def(d)) {
149-
std::string msg = "function " + mk_pp(d, m) + " needs to be declared using rec_func_decl";
150-
SET_ERROR_CODE(Z3_INVALID_ARG, msg.c_str());
149+
SET_ERROR_CODE(Z3_INVALID_ARG, "function " + mk_pp(d, m) + " needs to be declared using rec_func_decl");
151150
return;
152151
}
153152
expr_ref abs_body(m);
@@ -168,8 +167,7 @@ extern "C" {
168167
return;
169168
}
170169
if (!pd.get_def()->get_cases().empty()) {
171-
std::string msg = "function " + mk_pp(d, m) + " has already been given a definition";
172-
SET_ERROR_CODE(Z3_INVALID_ARG, msg.c_str());
170+
SET_ERROR_CODE(Z3_INVALID_ARG, "function " + mk_pp(d, m) + " has already been given a definition");
173171
return;
174172
}
175173

‎src/api/api_ast_map.cpp

+2-2
Original file line numberDiff line numberDiff line change
@@ -160,8 +160,8 @@ extern "C" {
160160
for (; it != end; ++it) {
161161
buffer << "\n (" << mk_ismt2_pp(it->m_key, mng, 3) << "\n " << mk_ismt2_pp(it->m_value, mng, 3) << ")";
162162
}
163-
buffer << ")";
164-
return mk_c(c)->mk_external_string(buffer.str());
163+
buffer << ')';
164+
return mk_c(c)->mk_external_string(std::move(buffer).str());
165165
Z3_CATCH_RETURN(nullptr);
166166
}
167167

‎src/api/api_context.cpp

+3-3
Original file line numberDiff line numberDiff line change
@@ -338,12 +338,12 @@ namespace api {
338338
std::ostringstream buffer;
339339
app * a = to_app(n);
340340
buffer << mk_pp(a->get_decl(), m()) << " applied to: ";
341-
if (a->get_num_args() > 1) buffer << "\n";
341+
if (a->get_num_args() > 1) buffer << '\n';
342342
for (unsigned i = 0; i < a->get_num_args(); ++i) {
343343
buffer << mk_bounded_pp(a->get_arg(i), m(), 3) << " of sort ";
344-
buffer << mk_pp(a->get_arg(i)->get_sort(), m()) << "\n";
344+
buffer << mk_pp(a->get_arg(i)->get_sort(), m()) << '\n';
345345
}
346-
auto str = buffer.str();
346+
auto str = std::move(buffer).str();
347347
warning_msg("%s", str.c_str());
348348
break;
349349
}

‎src/api/api_fpa.cpp

+2-2
Original file line numberDiff line numberDiff line change
@@ -1022,7 +1022,7 @@ extern "C" {
10221022
if (mpfm.is_inf(val)) mpqm.set(q, 0);
10231023
std::stringstream ss;
10241024
mpqm.display_decimal(ss, q, sbits);
1025-
return mk_c(c)->mk_external_string(ss.str());
1025+
return mk_c(c)->mk_external_string(std::move(ss).str());
10261026
Z3_CATCH_RETURN("");
10271027
}
10281028

@@ -1100,7 +1100,7 @@ extern "C" {
11001100
}
11011101
std::stringstream ss;
11021102
ss << exp;
1103-
return mk_c(c)->mk_external_string(ss.str());
1103+
return mk_c(c)->mk_external_string(std::move(ss).str());
11041104
Z3_CATCH_RETURN("");
11051105
}
11061106

‎src/api/api_goal.cpp

+2-2
Original file line numberDiff line numberDiff line change
@@ -185,7 +185,7 @@ extern "C" {
185185
std::ostringstream buffer;
186186
to_goal_ref(g)->display(buffer);
187187
// Hack for removing the trailing '\n'
188-
std::string result = buffer.str();
188+
std::string result = std::move(buffer).str();
189189
SASSERT(result.size() > 0);
190190
result.resize(result.size()-1);
191191
return mk_c(c)->mk_external_string(std::move(result));
@@ -203,7 +203,7 @@ extern "C" {
203203
}
204204
to_goal_ref(g)->display_dimacs(buffer, include_names);
205205
// Hack for removing the trailing '\n'
206-
std::string result = buffer.str();
206+
std::string result = std::move(buffer).str();
207207
SASSERT(result.size() > 0);
208208
result.resize(result.size()-1);
209209
return mk_c(c)->mk_external_string(std::move(result));

‎src/api/api_model.cpp

+2-2
Original file line numberDiff line numberDiff line change
@@ -432,14 +432,14 @@ extern "C" {
432432
if (mk_c(c)->get_print_mode() == Z3_PRINT_SMTLIB2_COMPLIANT) {
433433
model_smt2_pp(buffer, mk_c(c)->m(), *(to_model_ref(m)), 0);
434434
// Hack for removing the trailing '\n'
435-
result = buffer.str();
435+
result = std::move(buffer).str();
436436
if (!result.empty())
437437
result.resize(result.size()-1);
438438
}
439439
else {
440440
model_params p;
441441
model_v2_pp(buffer, *(to_model_ref(m)), p.partial());
442-
result = buffer.str();
442+
result = std::move(buffer).str();
443443
}
444444
return mk_c(c)->mk_external_string(std::move(result));
445445
Z3_CATCH_RETURN(nullptr);

‎src/api/api_numeral.cpp

+5-5
Original file line numberDiff line numberDiff line change
@@ -189,7 +189,7 @@ extern "C" {
189189
if (ok && r.is_int() && !r.is_neg()) {
190190
std::stringstream strm;
191191
r.display_bin(strm, r.get_num_bits());
192-
return mk_c(c)->mk_external_string(strm.str());
192+
return mk_c(c)->mk_external_string(std::move(strm).str());
193193
}
194194
else {
195195
SET_ERROR_CODE(Z3_INVALID_ARG, nullptr);
@@ -237,7 +237,7 @@ extern "C" {
237237
else if (mk_c(c)->fpautil().is_numeral(to_expr(a), tmp)) {
238238
std::ostringstream buffer;
239239
fu.fm().display_smt2(buffer, tmp, false);
240-
return mk_c(c)->mk_external_string(buffer.str());
240+
return mk_c(c)->mk_external_string(std::move(buffer).str());
241241
}
242242
else {
243243
SET_ERROR_CODE(Z3_INVALID_ARG, nullptr);
@@ -288,21 +288,21 @@ extern "C" {
288288
if (u.is_numeral(e, r) && !r.is_int()) {
289289
std::ostringstream buffer;
290290
r.display_decimal(buffer, precision);
291-
return mk_c(c)->mk_external_string(buffer.str());
291+
return mk_c(c)->mk_external_string(std::move(buffer).str());
292292
}
293293
if (u.is_irrational_algebraic_numeral(e)) {
294294
algebraic_numbers::anum const & n = u.to_irrational_algebraic_numeral(e);
295295
algebraic_numbers::manager & am = u.am();
296296
std::ostringstream buffer;
297297
am.display_decimal(buffer, n, precision);
298-
return mk_c(c)->mk_external_string(buffer.str());
298+
return mk_c(c)->mk_external_string(std::move(buffer).str());
299299
}
300300
else if (mk_c(c)->fpautil().is_rm_numeral(to_expr(a), rm))
301301
return Z3_get_numeral_string(c, a);
302302
else if (mk_c(c)->fpautil().is_numeral(to_expr(a), ftmp)) {
303303
std::ostringstream buffer;
304304
fu.fm().display_decimal(buffer, ftmp, 12);
305-
return mk_c(c)->mk_external_string(buffer.str());
305+
return mk_c(c)->mk_external_string(std::move(buffer).str());
306306
}
307307
else if (Z3_get_numeral_rational(c, a, r)) {
308308
return mk_c(c)->mk_external_string(r.to_string());

‎src/api/api_solver.cpp

+8-8
Original file line numberDiff line numberDiff line change
@@ -170,8 +170,8 @@ extern "C" {
170170
if (g_is_threaded || g_thread_id != std::this_thread::get_id()) {
171171
g_is_threaded = true;
172172
std::ostringstream strm;
173-
strm << smt2log << "-" << std::this_thread::get_id();
174-
smt2log = symbol(strm.str());
173+
strm << smt2log << '-' << std::this_thread::get_id();
174+
smt2log = symbol(std::move(strm).str());
175175
}
176176
to_solver(s)->m_pp = alloc(solver2smt2_pp, mk_c(c)->m(), smt2log.str());
177177
}
@@ -208,7 +208,7 @@ extern "C" {
208208
if (!smt_logics::supported_logic(to_symbol(logic))) {
209209
std::ostringstream strm;
210210
strm << "logic '" << to_symbol(logic) << "' is not recognized";
211-
SET_ERROR_CODE(Z3_INVALID_ARG, strm.str());
211+
SET_ERROR_CODE(Z3_INVALID_ARG, std::move(strm).str());
212212
RETURN_Z3(nullptr);
213213
}
214214
else {
@@ -306,7 +306,7 @@ extern "C" {
306306

307307
if (!parse_smt2_commands(*ctx.get(), is)) {
308308
ctx = nullptr;
309-
SET_ERROR_CODE(Z3_PARSER_ERROR, errstrm.str());
309+
SET_ERROR_CODE(Z3_PARSER_ERROR, std::move(errstrm).str());
310310
return;
311311
}
312312

@@ -333,7 +333,7 @@ extern "C" {
333333
std::stringstream err;
334334
sat::solver solver(to_solver_ref(s)->get_params(), m.limit());
335335
if (!parse_dimacs(is, err, solver)) {
336-
SET_ERROR_CODE(Z3_PARSER_ERROR, err.str());
336+
SET_ERROR_CODE(Z3_PARSER_ERROR, std::move(err).str());
337337
return;
338338
}
339339
sat2goal s2g;
@@ -400,7 +400,7 @@ extern "C" {
400400
if (!initialized)
401401
to_solver(s)->m_solver = nullptr;
402402
descrs.display(buffer);
403-
return mk_c(c)->mk_external_string(buffer.str());
403+
return mk_c(c)->mk_external_string(std::move(buffer).str());
404404
Z3_CATCH_RETURN("");
405405
}
406406

@@ -799,7 +799,7 @@ extern "C" {
799799
init_solver(c, s);
800800
std::ostringstream buffer;
801801
to_solver_ref(s)->display(buffer);
802-
return mk_c(c)->mk_external_string(buffer.str());
802+
return mk_c(c)->mk_external_string(std::move(buffer).str());
803803
Z3_CATCH_RETURN("");
804804
}
805805

@@ -810,7 +810,7 @@ extern "C" {
810810
init_solver(c, s);
811811
std::ostringstream buffer;
812812
to_solver_ref(s)->display_dimacs(buffer, include_names);
813-
return mk_c(c)->mk_external_string(buffer.str());
813+
return mk_c(c)->mk_external_string(std::move(buffer).str());
814814
Z3_CATCH_RETURN("");
815815
}
816816

‎src/ast/ast_pp.h

+2-2
Original file line numberDiff line numberDiff line change
@@ -58,13 +58,13 @@ inline std::ostream& operator<<(std::ostream & out, mk_pp_vec const & pp) {
5858
inline std::string operator+(char const* s, mk_pp const& pp) {
5959
std::ostringstream strm;
6060
strm << s << pp;
61-
return strm.str();
61+
return std::move(strm).str();
6262
}
6363

6464
inline std::string operator+(std::string const& s, mk_pp const& pp) {
6565
std::ostringstream strm;
6666
strm << s << pp;
67-
return strm.str();
67+
return std::move(strm).str();
6868
}
6969

7070
inline std::string& operator+=(std::string& s, mk_pp const& pp) {

‎src/ast/rewriter/pb_rewriter.cpp

+2-6
Original file line numberDiff line numberDiff line change
@@ -157,9 +157,7 @@ expr_ref pb_rewriter::mk_validate_rewrite(app_ref& e1, app_ref& e2) {
157157
continue;
158158
}
159159

160-
std::ostringstream strm;
161-
strm << 'x' << i;
162-
name = symbol(strm.str());
160+
name = symbol('x' + std::to_string(i));
163161
trail.push_back(m.mk_const(name, a.mk_int()));
164162
expr* x = trail.back();
165163
m.is_not(e,e);
@@ -188,9 +186,7 @@ void pb_rewriter::validate_rewrite(func_decl* f, unsigned sz, expr*const* args,
188186
}
189187

190188
void pb_rewriter::dump_pb_rewrite(expr* fml) {
191-
std::ostringstream strm;
192-
strm << "pb_rewrite_" << (s_lemma++) << ".smt2";
193-
std::ofstream out(strm.str());
189+
std::ofstream out("pb_rewrite_" + std::to_string(s_lemma++) + ".smt2");
194190
ast_smt_pp pp(m());
195191
pp.display_smt2(out, fml);
196192
out.close();

‎src/ast/well_sorted.cpp

+1-2
Original file line numberDiff line numberDiff line change
@@ -70,8 +70,7 @@ struct well_sorted_proc {
7070
strm << "Expected sort: " << mk_pp(expected_sort, m_manager) << '\n';
7171
strm << "Actual sort: " << mk_pp(actual_sort, m_manager) << '\n';
7272
strm << "Function sort: " << mk_pp(decl, m_manager) << '.';
73-
auto str = strm.str();
74-
warning_msg("%s", str.c_str());
73+
warning_msg("%s", std::move(strm).str().c_str());
7574
m_error = true;
7675
return;
7776
}

‎src/math/lp/numeric_pair.h

-1
Original file line numberDiff line numberDiff line change
@@ -24,7 +24,6 @@
2424
#include <algorithm>
2525
#ifdef lp_for_z3
2626
#include "util/rational.h"
27-
#include "util/sstream.h"
2827
#include "util/z3_exception.h"
2928
#else
3029
// include "util/numerics/mpq.h"

‎src/model/model_smt2_pp.cpp

+2-4
Original file line numberDiff line numberDiff line change
@@ -68,7 +68,7 @@ static void pp_uninterp_sorts(std::ostream & out, ast_printer_context & ctx, mod
6868
buffer << " ";
6969
}
7070
buffer << "\n-----------";
71-
std::string buffer_str = buffer.str();
71+
std::string buffer_str = std::move(buffer).str();
7272
unsigned len = static_cast<unsigned>(buffer_str.length());
7373
pp_indent(out, indent);
7474
out << ";; ";
@@ -206,9 +206,7 @@ static void pp_funs(std::ostream & out, ast_printer_context & ctx, model_core co
206206
if (f_i->is_partial()) {
207207
body = mk_string(m, "#unspecified");
208208
for (unsigned j = 0; j < f->get_arity(); j++) {
209-
std::stringstream strm;
210-
strm << "x!" << (j+1);
211-
var_names.push_back(symbol(strm.str()));
209+
var_names.push_back(symbol("x!" + std::to_string(j+1)));
212210
}
213211
}
214212
else {

‎src/sat/sat_cutset.cpp

+1-1
Original file line numberDiff line numberDiff line change
@@ -273,7 +273,7 @@ namespace sat {
273273
std::string cut::table2string(unsigned num_input, uint64_t table) {
274274
std::ostringstream strm;
275275
display_table(strm, num_input, table);
276-
return strm.str();
276+
return std::move(strm).str();
277277
}
278278

279279

‎src/sat/sat_solver.cpp

+1-1
Original file line numberDiff line numberDiff line change
@@ -2280,7 +2280,7 @@ namespace sat {
22802280
<< std::setw(4) << m_stats.m_restart
22812281
<< mk_stat(*this)
22822282
<< " " << std::setw(6) << std::setprecision(2) << m_stopwatch.get_current_seconds() << ")\n";
2283-
std::string str(strm.str());
2283+
std::string str = std::move(strm).str();
22842284
svector<size_t> nums;
22852285
for (size_t i = 0; i < str.size(); ++i) {
22862286
while (i < str.size() && str[i] != ' ') ++i;

‎src/smt/smt_context_pp.cpp

+2-2
Original file line numberDiff line numberDiff line change
@@ -510,7 +510,7 @@ namespace smt {
510510
#else
511511
strm << "lemma_" << (++m_lemma_id) << ".smt2";
512512
#endif
513-
return strm.str();
513+
return std::move(strm).str();
514514
}
515515

516516

@@ -722,7 +722,7 @@ namespace smt {
722722
<< std::setw(4) << m_stats.m_num_del_clauses << " "
723723
<< std::setw(7) << mem_stat() << ")\n";
724724

725-
std::string str(strm.str());
725+
std::string str = std::move(strm).str();
726726
svector<size_t> offsets;
727727
for (size_t i = 0; i < str.size(); ++i) {
728728
while (i < str.size() && str[i] != ' ') ++i;

‎src/util/sstream.h

-31
This file was deleted.

‎src/util/zstring.cpp

+2-2
Original file line numberDiff line numberDiff line change
@@ -152,7 +152,7 @@ std::string zstring::encode() const {
152152
unsigned ch = m_buffer[i];
153153
if (ch < 32 || ch >= 128 || ('\\' == ch && i + 1 < m_buffer.size() && 'u' == m_buffer[i+1])) {
154154
_flush();
155-
strm << "\\u{" << std::hex << ch << std::dec << "}";
155+
strm << "\\u{" << std::hex << ch << std::dec << '}';
156156
}
157157
else {
158158
if (offset == 99)
@@ -161,7 +161,7 @@ std::string zstring::encode() const {
161161
}
162162
}
163163
_flush();
164-
return strm.str();
164+
return std::move(strm).str();
165165
}
166166

167167
bool zstring::suffixof(zstring const& other) const {

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