80 lines
3.1 KiB
C
80 lines
3.1 KiB
C
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#ifndef BENCHMARK_COMMANDLINEFLAGS_H_
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#define BENCHMARK_COMMANDLINEFLAGS_H_
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#include <cstdint>
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#include <string>
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// Macro for referencing flags.
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#define FLAG(name) FLAGS_##name
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// Macros for declaring flags.
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#define DECLARE_bool(name) extern bool FLAG(name)
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#define DECLARE_int32(name) extern int32_t FLAG(name)
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#define DECLARE_int64(name) extern int64_t FLAG(name)
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#define DECLARE_double(name) extern double FLAG(name)
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#define DECLARE_string(name) extern std::string FLAG(name)
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// Macros for defining flags.
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#define DEFINE_bool(name, default_val, doc) bool FLAG(name) = (default_val)
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#define DEFINE_int32(name, default_val, doc) int32_t FLAG(name) = (default_val)
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#define DEFINE_int64(name, default_val, doc) int64_t FLAG(name) = (default_val)
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#define DEFINE_double(name, default_val, doc) double FLAG(name) = (default_val)
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#define DEFINE_string(name, default_val, doc) \
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std::string FLAG(name) = (default_val)
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namespace benchmark {
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// Parses 'str' for a 32-bit signed integer. If successful, writes the result
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// to *value and returns true; otherwise leaves *value unchanged and returns
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// false.
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bool ParseInt32(const std::string& src_text, const char* str, int32_t* value);
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// Parses a bool/Int32/string from the environment variable
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// corresponding to the given Google Test flag.
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bool BoolFromEnv(const char* flag, bool default_val);
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int32_t Int32FromEnv(const char* flag, int32_t default_val);
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double DoubleFromEnv(const char* flag, double default_val);
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const char* StringFromEnv(const char* flag, const char* default_val);
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// Parses a string for a bool flag, in the form of either
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// "--flag=value" or "--flag".
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//
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// In the former case, the value is taken as true if it passes IsTruthyValue().
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//
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// In the latter case, the value is taken as true.
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//
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// On success, stores the value of the flag in *value, and returns
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// true. On failure, returns false without changing *value.
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bool ParseBoolFlag(const char* str, const char* flag, bool* value);
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// Parses a string for an Int32 flag, in the form of
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// "--flag=value".
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//
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// On success, stores the value of the flag in *value, and returns
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// true. On failure, returns false without changing *value.
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bool ParseInt32Flag(const char* str, const char* flag, int32_t* value);
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// Parses a string for a Double flag, in the form of
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// "--flag=value".
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//
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// On success, stores the value of the flag in *value, and returns
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// true. On failure, returns false without changing *value.
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bool ParseDoubleFlag(const char* str, const char* flag, double* value);
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// Parses a string for a string flag, in the form of
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// "--flag=value".
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//
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// On success, stores the value of the flag in *value, and returns
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// true. On failure, returns false without changing *value.
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bool ParseStringFlag(const char* str, const char* flag, std::string* value);
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// Returns true if the string matches the flag.
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bool IsFlag(const char* str, const char* flag);
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// Returns true unless value starts with one of: '0', 'f', 'F', 'n' or 'N', or
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// some non-alphanumeric character. As a special case, also returns true if
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// value is the empty string.
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bool IsTruthyFlagValue(const std::string& value);
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} // end namespace benchmark
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#endif // BENCHMARK_COMMANDLINEFLAGS_H_
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