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lambda debugging and tracing

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Macro CTTL_TRACE_EVERYTHING turns on tracing of lambda expressions unless CTTL_TRACE_DEPOSITS_OFF is defined.

Macro CTTL_TRACE_RULES turns on tracing of lambda expressions, unless CTTL_TRACE_DEPOSITS_OFF is defined.

Macro CTTL_TRACE_DEPOSITS turns on tracing of lambda expressions.

Macro CTTL_TRACE_DEPOSITS_OFF turns off tracing of lambda expressions, to be used in combination with CTTL_TRACE_EVERYTHING and CTTL_TRACE_RULES.

Macro CTTL_LAMBDA_ASSERT( expression ) tests logical expression. If the expression is false, it invokes standard C assert().

Macro CTTL_TRACE_DEPOSIT_JUSTIFY( ) sends spaces std::cout to align output cursor with the current level of CTTL tracing.

Macro CTTL_TRACE_DEPOSIT_TEXT( expression ) sends expression to std::cout.

Macro CTTL_LAMBDA_TRACE( xmessage ) sends character string to std::cout from inside lambda expressions. Lambda expression CTTL_LAMBDA_TRACE( xmessage ) has type of integer, and the value of atoi( xmessage ) while in trace mode; otherwise it has a value of 1.

For example:

code debugging

Prints message when lambda tracing is turned on.

Result of evaluation may be controlled by an integer in front of the text message submitted as atoi argument.. 

#define CTTL_TRACE_RULES // automatically turns lambda tracing on

#include "cttl/cttl.h"
#include "lambda/lambda.h"

using namespace cttl;

int main(int argc, char* argv[])
{
    CTTL_TRACE_DEPOSIT_JUSTIFY();
    CTTL_TRACE_DEPOSIT_TEXT( "BEGIN" );
    CTTL_TRACE_DEPOSIT_TEXT( std::endl );
    (
        CTTL_LAMBDA_TRACE( "File: " __FILE__ " Line:" CTTL_QUOTED_EXPRESSION( __LINE__ )  )
    ).evaluate();
    CTTL_TRACE_DEPOSIT_JUSTIFY();
    CTTL_TRACE_DEPOSIT_TEXT( "END" );

    return 0;
}
/*
Program output:

     BEGIN
     ( ++ "File: main.cpp Line:14"  0 )
     END
*/


Copyright © 1997-2006 Igor Kholodov mailto:cttl@users.sourceforge.net.

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