xref: /llvm-project/clang-tools-extra/test/clang-tidy/checkers/modernize/use-std-print-absl.cpp (revision 222dd235ffc39b3695a3c002593097bec216a8fa)
183f875dcSMike Crowe // RUN: %check_clang_tidy \
283f875dcSMike Crowe // RUN:   -std=c++23 %s modernize-use-std-print %t -- \
3*222dd235SCongcong Cai // RUN:   -config="{CheckOptions: {modernize-use-std-print.StrictMode: true}}" \
483f875dcSMike Crowe // RUN:   -- -isystem %clang_tidy_headers
583f875dcSMike Crowe // RUN: %check_clang_tidy \
683f875dcSMike Crowe // RUN:   -std=c++23 %s modernize-use-std-print %t -- \
7*222dd235SCongcong Cai // RUN:   -config="{CheckOptions: {modernize-use-std-print.StrictMode: false}}" \
883f875dcSMike Crowe // RUN:   -- -isystem %clang_tidy_headers
983f875dcSMike Crowe 
1083f875dcSMike Crowe #include <cstdio>
1183f875dcSMike Crowe #include <string.h>
1283f875dcSMike Crowe 
1383f875dcSMike Crowe namespace absl
1483f875dcSMike Crowe {
1583f875dcSMike Crowe // Use const char * for the format since the real type is hard to mock up.
1683f875dcSMike Crowe template <typename... Args>
1783f875dcSMike Crowe int PrintF(const char *format, const Args&... args);
1883f875dcSMike Crowe 
1983f875dcSMike Crowe template <typename... Args>
2083f875dcSMike Crowe int FPrintF(FILE* output, const char *format, const Args&... args);
2183f875dcSMike Crowe }
2283f875dcSMike Crowe 
2383f875dcSMike Crowe void printf_simple() {
2483f875dcSMike Crowe   absl::PrintF("Hello %s %d", "world", 42);
2583f875dcSMike Crowe   // CHECK-MESSAGES: [[@LINE-1]]:3: warning: use 'std::print' instead of 'PrintF' [modernize-use-std-print]
2683f875dcSMike Crowe   // CHECK-FIXES: std::print("Hello {} {}", "world", 42);
2783f875dcSMike Crowe }
2883f875dcSMike Crowe 
2983f875dcSMike Crowe void printf_newline() {
3083f875dcSMike Crowe   absl::PrintF("Hello %s %d\n", "world", 42);
3183f875dcSMike Crowe   // CHECK-MESSAGES: [[@LINE-1]]:3: warning: use 'std::println' instead of 'PrintF' [modernize-use-std-print]
3283f875dcSMike Crowe   // CHECK-FIXES: std::println("Hello {} {}", "world", 42);
3383f875dcSMike Crowe 
3483f875dcSMike Crowe   using namespace absl;
3583f875dcSMike Crowe   PrintF("Hello %s %d\n", "world", 42);
3683f875dcSMike Crowe   // CHECK-MESSAGES: [[@LINE-1]]:3: warning: use 'std::println' instead of 'PrintF' [modernize-use-std-print]
3783f875dcSMike Crowe   // CHECK-FIXES: std::println("Hello {} {}", "world", 42);
3883f875dcSMike Crowe }
3983f875dcSMike Crowe 
4083f875dcSMike Crowe // absl uses the type of the argument rather than the format string, so unsigned
4183f875dcSMike Crowe // types will be printed as unsigned even if the format string indicates signed
4283f875dcSMike Crowe // and vice-versa. This is exactly what std::print will do too, so no casts are
4383f875dcSMike Crowe // required.
4483f875dcSMike Crowe void printf_no_casts_in_strict_mode() {
4583f875dcSMike Crowe   using namespace absl;
4683f875dcSMike Crowe 
4783f875dcSMike Crowe   const unsigned short us = 42U;
4883f875dcSMike Crowe   PrintF("Integer %hd from unsigned short\n", us);
4983f875dcSMike Crowe   // CHECK-MESSAGES: [[@LINE-1]]:3: warning: use 'std::println' instead of 'PrintF' [modernize-use-std-print]
5083f875dcSMike Crowe   // CHECK-FIXES: std::println("Integer {} from unsigned short", us);
5183f875dcSMike Crowe 
5283f875dcSMike Crowe   const short s = 42;
5383f875dcSMike Crowe   PrintF("Unsigned integer %hu from short\n", s);
5483f875dcSMike Crowe   // CHECK-MESSAGES: [[@LINE-1]]:3: warning: use 'std::println' instead of 'PrintF' [modernize-use-std-print]
5583f875dcSMike Crowe   // CHECK-FIXES: std::println("Unsigned integer {} from short", s);
5683f875dcSMike Crowe }
5783f875dcSMike Crowe 
5809ed2102SMike Crowe int printf_uses_return_value(int i) {
5909ed2102SMike Crowe   using namespace absl;
6009ed2102SMike Crowe 
6109ed2102SMike Crowe   return PrintF("return value %d\n", i);
6209ed2102SMike Crowe }
6309ed2102SMike Crowe 
6483f875dcSMike Crowe void fprintf_simple(FILE *fp) {
6583f875dcSMike Crowe   absl::FPrintF(fp, "Hello %s %d", "world", 42);
6683f875dcSMike Crowe   // CHECK-MESSAGES: [[@LINE-1]]:3: warning: use 'std::print' instead of 'FPrintF' [modernize-use-std-print]
6783f875dcSMike Crowe   // CHECK-FIXES: std::print(fp, "Hello {} {}", "world", 42);
6883f875dcSMike Crowe }
6983f875dcSMike Crowe 
7083f875dcSMike Crowe void fprintf_newline(FILE *fp) {
7183f875dcSMike Crowe   absl::FPrintF(fp, "Hello %s %d\n", "world", 42);
7283f875dcSMike Crowe   // CHECK-MESSAGES: [[@LINE-1]]:3: warning: use 'std::println' instead of 'FPrintF' [modernize-use-std-print]
7383f875dcSMike Crowe   // CHECK-FIXES: std::println(fp, "Hello {} {}", "world", 42);
7483f875dcSMike Crowe 
7583f875dcSMike Crowe   using namespace absl;
7683f875dcSMike Crowe   FPrintF(fp, "Hello %s %d\n", "world", 42);
7783f875dcSMike Crowe   // CHECK-MESSAGES: [[@LINE-1]]:3: warning: use 'std::println' instead of 'FPrintF' [modernize-use-std-print]
7883f875dcSMike Crowe   // CHECK-FIXES: std::println(fp, "Hello {} {}", "world", 42);
7983f875dcSMike Crowe }
8083f875dcSMike Crowe 
8183f875dcSMike Crowe void fprintf_no_casts_in_strict_mode(FILE *fp) {
8283f875dcSMike Crowe   using namespace absl;
8383f875dcSMike Crowe 
8483f875dcSMike Crowe   const unsigned short us = 42U;
8583f875dcSMike Crowe   FPrintF(fp, "Integer %hd from unsigned short\n", us);
8683f875dcSMike Crowe   // CHECK-MESSAGES: [[@LINE-1]]:3: warning: use 'std::println' instead of 'FPrintF' [modernize-use-std-print]
8783f875dcSMike Crowe   // CHECK-FIXES: std::println(fp, "Integer {} from unsigned short", us);
8883f875dcSMike Crowe 
8983f875dcSMike Crowe   const short s = 42;
9083f875dcSMike Crowe   FPrintF(fp, "Unsigned integer %hu from short\n", s);
9183f875dcSMike Crowe   // CHECK-MESSAGES: [[@LINE-1]]:3: warning: use 'std::println' instead of 'FPrintF' [modernize-use-std-print]
9283f875dcSMike Crowe   // CHECK-FIXES: std::println(fp, "Unsigned integer {} from short", s);
9383f875dcSMike Crowe }
9409ed2102SMike Crowe 
9509ed2102SMike Crowe int fprintf_uses_return_value(FILE *fp, int i) {
9609ed2102SMike Crowe   using namespace absl;
9709ed2102SMike Crowe 
9809ed2102SMike Crowe   return FPrintF(fp, "return value %d\n", i);
9909ed2102SMike Crowe }
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