Definition

Evaluates a preprocessor-style expression with macro substitution. Tokenizes the input expression, expands macros where appropriate, parses it according to operator precedence, and computes the integer result. Returns .true. if evaluation succeeded and the result is non-zero.

Examples

   integer :: value
 
   call add(macros, 'SIZE', '64')
 
   if (evaluate_expression('SIZE >= 32', macros, value)) then
      print *, value      ! 1
   end if

Constructors

Constructor

logical function evaluate(expr, macros, val)

Parameters

[in]	expr	Expression string to evaluate
[in,out]	macros	Array of defined macros for substitution and defined() checks
[out]	val	(optional) integer result of the evaluation

Returns: .true. if the expression evaluated successfully to non-zero, .false. otherwise

Constructor

logical function evaluate(expr, macros, ctx, val)

Parameters

[in]	expr	Expression string to evaluate
[in,out]	macros	Array of defined macros for substitution and defined() checks
[in]	ctx	Current context
[out]	val	(optional) integer result of the evaluation

Returns: .true. if the expression evaluated successfully to non-zero, .false. otherwise

Definition at line 171 of file operators.f90.

The documentation for this interface was generated from the following file:

operators.f90

Methods

◆ evaluate_expression_default()

logical function evaluate_expression_default	(	character(*), intent(in)	expr,
		type(macro), dimension(:), intent(inout), allocatable	macros,
		integer, intent(out), optional	val )

Evaluates a preprocessor-style expression with macro substitution. Tokenizes the input expression, expands macros where appropriate, parses it according to operator precedence, and computes the integer result. Returns .true. if evaluation succeeded and the result is non-zero.

Parameters

[in]	expr	Expression string to evaluate
[in,out]	macros	Array of defined macros for substitution and defined() checks
[out]	val	(optional) integer result of the evaluation

Returns: .true. if the expression evaluated successfully to non-zero, .false. otherwise

Definition at line 189 of file operators.f90.

◆ evaluate_expression_with_context()

logical function evaluate_expression_with_context	(	character(*), intent(in)	expr,
		type(macro), dimension(:), intent(inout), allocatable	macros,
		type(context), intent(in)	ctx,
		integer, intent(out), optional	val )

Evaluates a preprocessor-style expression with macro substitution. Tokenizes the input expression, expands macros where appropriate, parses it according to operator precedence, and computes the integer result. Returns .true. if evaluation succeeded and the result is non-zero.

Parameters

[in]	expr	Expression string to evaluate
[in,out]	macros	Array of defined macros for substitution and defined() checks
[in]	ctx	Context
[out]	val	(optional) integer result of the evaluation

Returns: .true. if the expression evaluated successfully to non-zero, .false. otherwise

Definition at line 212 of file operators.f90.