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#define | XFCE_GENERIC_STACK() |
#define | xfce_stack_new() |
#define | xfce_stack_free() |
#define | xfce_stack_top() |
#define | xfce_stack_pop() |
#define | xfce_stack_push() |
This module provides generic data types - as known from the C++ standard template library - for the brave C programmer. Since C does not provide any template mechanism, these generics are completely based on C preprocessor macros and the functions offer no type safety at all (though some common mistakes will surely be caught by the C compiler).
Example 2. Using a generic stack
typedef XFCE_GENERIC_STACK(int) IntStack; IntStack *stack = xfce_stack_new (IntStack); xfce_stack_push (stack, 0); xfce_stack_push (stack, 1); printf ("Top is %d\n", xfce_stack_top (stack)); xfce_stack_pop (stack); printf ("Top is %d\n", xfce_stack_top (stack)); xfce_stack_free (stack);
#define XFCE_GENERIC_STACK(Type)
This macro is used to create a new stack data type which elements are of
Type
. For example, to create a stack type that handles elements of type
double
, you'd write the following
typedef XFCE_GENERIC_STACK(double) MyDoubleStack;
and furtheron refer to your stack type as MyDoubleStack
.
#define xfce_stack_new(StackType)
Creates a new instance of StackType
and returns a pointer to the newly
created instance. For example, imagine you declared a type MyDoubleStack
as shown above, you can instantiate this type with
MyDoubleStack *my_stack = xfce_stack_new (MyDoubleStack);
#define xfce_stack_free(stack)
Frees a stack, that was allocated using xfce_stack_new.
#define xfce_stack_top(stack)
Returns the top element from stack
. Note that this function does not
pop the top element, it just returns it.