Note: None of this is implemented.

Metaprogramming enables fine-grained control over what program logic gets compiled, such as:

• Conditionally include or exclude certain code
• Algorithmically generate data or program logic

In effect, the metaprogramming facilities represent a additional, similar-looking language whose constructs are differentiated by being marked with #. This language manipulates regular program logic as if it were data.

Meta-conditionals are control flow blocks that are used to determine what logic gets compiled (as opposed to normal control flow blocks that determine what gets executed).

Meta-conditionals within generics or macros are evaluated when instantiated.

Meta variables

Meta variables are immutable and exist only at compile time. They hold typed, constant values, calculated from an expression.

imm #arrsize = 10

Note: Some meta-variables have their values set by the compiler, thereby providing information about the compile-time environment, such as the target platform and architecture. It is also possible to use a compiler option to pass in data to a program in one or more meta-variables.

#if

#if may be used to determine whether or not to include specific program logic in the compiled program:

#if #target == "windows":
	... Windows-specific logic ...
#elif #target == "linux":
	... Linux-specifc logic ...

#each

#each enables collection-driven, repetitive generation of the same program logic.

#each #x in #table:
	... some logic ...