Macros ​

Linking Macro Defines ​

Macro definitions are declared just like variables. Let's assume that the tickrate variable is macro define literal.

For example:
tickrate.hpp

#define TICKRATE 256

sum.jule

cpp use "tickrate.hpp"

cpp let TICKRATE: int

A few points:

• The data type must be specified when linking a variable
• Cannot give expression when linking a variable
• All variables linkings are immutable by default
• They cannot be constant, leave immutable if linking a constant variable
• Take macro definition literals as constants and leave them immutable

Linking Macro Functions ​

It is possible report macros to Jule. However, type protection must be provided exactly. Function-like macros must be declared as a function.

For example:
sum.hpp

#define SUM(X, Y) (X+Y)

sum.jule

cpp use "sum.hpp"

#cdef
cpp fn SUM(int, int): int

The cdef attribute must be used for correct parsing of preprocessor defines.