feal::Assert Class Reference

Class defining debugging messages. More...

#include <asserts.hh>

Collaboration diagram for feal::Assert:

Public Member Functions
	Assert (const std::string &expression)
	Constructor. More...
	Assert (const Assert &other)
	Copy constructor. More...
	~Assert ()
	Destructor. More...
template<typename T >
Assert &	add_value (T var_current_val, const char *var_name)
	Adds name and value of variable. More...
Assert &	set_context (const char *file_name, const char *function, const int line)
	Stores values for printing out line number, function, etc. More...
void	error (std::string error_msg="")
	Generate error with given message. More...
void	warning (std::string warning_msg="")
	Generate warning with given message. More...

Public Attributes
Assert &	_FEAL_ASSERT_A
	clever macro A More...
Assert &	_FEAL_ASSERT_B
	clever macro B More...

Protected Attributes
Exc_assert	exception_
	Exception object. More...
bool	thrown_
	Flag marked if Assert thrown error, warning, ... More...

Detailed Description

Class defining debugging messages.

Allows define assert, warning etc. either only for debug mode or for release mode also.

Definition of asserts is designed using macros FEAL_ASSERT and FEAL_ASSERT_PERMANENT. First macro is used for both modes, second is only for debug. Definition allows to printout given variables too. For simplifying are designed shorter names of macros ASSERT and ASSERT_PERMANENT, these names can be used if thea aren't in conflicts with external libraries.

Examples of usage:

1) We expect empty stings 's1' and 's2', if condition is not satisfied exception will be thrown. Condition is indicated in first parentheses, variables designed for printout follow as (s1)(s2). Each variable must be defined in separate parentheses. The last step is calling of the appropriate assert type, in this case error(). This assert is performed for debug and release mode.

std::string s1, s2;
...
FEAL_ASSERT_PERMANENT(s1.empty() && s2.empty())(s1)(s2).error("Both strings must be empty!");

2) Parameter of error method is optional.

FEAL_ASSERT_PERMANENT(s1.empty() && s2.empty())(s1)(s2).error();

3) This example is same as previous, but assert is performed only for debug mode.

FEAL_ASSERT(s1.empty() && s2.empty())(s1)(s2).error("Both strings must be empty!");

4) Example is same as case 1). Assert type error is called automatically if any other is not listed. This case is not recommended, rather use explicitly calling of error() method.

FEAL_ASSERT_PERMANENT(s1.empty() && s2.empty())(s1)(s2);

5) Example with same condition as all previous but with other type - warning. Any exception is not thrown, only warning is printed. Parameter of warning method is optional.

FEAL_ASSERT_PERMANENT(s1.empty() && s2.empty())(s1)(s2).warning("Both strings should be empty!");

For simplifying we have defined several macros for comparsion of values:

• ASSERT_LT(a, b) or ASSERT_PERMANENT_LT(a, b) ... check if (a < b)
• ASSERT_LE(a, b) or ASSERT_PERMANENT_LE(a, b) ... check if (a <= b)
• ASSERT_GT(a, b) or ASSERT_PERMANENT_GT(a, b) ... check if (a > b)
• ASSERT_GE(a, b) or ASSERT_PERMANENT_GE(a, b) ... check if (a >= b)
• ASSERT_EQ(a, b) or ASSERT_PERMANENT_EQ(a, b) ... check if (a == b)
• ASSERT_PTR(obj) or ASSERT_PERMANENT_PTR(obj) ... check if obj is non-null pointer

All macros allow easier declaration of assert. Following example shows declarations of same cases with usage of different macros:

ASSERT_PERMANENT_LT( idx, arr.size() ).error("Index out of array!");
FEAL_ASSERT_PERMANENT( idx < arr.size() )(idx)(arr.size()).error("Index out of array!");

Definition at line 122 of file asserts.hh.

Constructor & Destructor Documentation

Assert() [1/2]

feal::Assert::Assert ( const std::string &  expression )

inline

Constructor.

Definition at line 125 of file asserts.hh.

Assert() [2/2]

feal::Assert::Assert ( const Assert &  other )

inline

Copy constructor.

Definition at line 135 of file asserts.hh.

~Assert()

feal::Assert::~Assert

(

)

Destructor.

Definition at line 69 of file asserts.cc.

Member Function Documentation

add_value()

template<typename T >

Assert& feal::Assert::add_value ( T  var_current_val, const char *  var_name  )

inline

Adds name and value of variable.

Definition at line 149 of file asserts.hh.

error()

void feal::Assert::error

(

std::string

error_msg = ""

)

Generate error with given message.

Definition at line 88 of file asserts.cc.

set_context()

Assert & feal::Assert::set_context	(	const char *	file_name,
		const char *	function,
		const int	line
	)

Stores values for printing out line number, function, etc.

Definition at line 78 of file asserts.cc.

warning()

void feal::Assert::warning

(

std::string

warning_msg = ""

)

Generate warning with given message.

Definition at line 96 of file asserts.cc.

Member Data Documentation

_FEAL_ASSERT_A

Assert& feal::Assert::_FEAL_ASSERT_A

clever macro A

Definition at line 144 of file asserts.hh.

_FEAL_ASSERT_B

Assert& feal::Assert::_FEAL_ASSERT_B

clever macro B

Definition at line 145 of file asserts.hh.

exception_

Exc_assert feal::Assert::exception_

protected

Exception object.

Definition at line 168 of file asserts.hh.

thrown_

bool feal::Assert::thrown_

protected

Flag marked if Assert thrown error, warning, ...

Definition at line 169 of file asserts.hh.

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The documentation for this class was generated from the following files:

• /opt/flow123d/flow123d/src/system/asserts.hh
• /opt/flow123d/flow123d/src/system/asserts.cc