Inline

When making a call the compiler may generate code to call a function where it is defined or it may copy the function code (inline) to prevent additional code generation.

The Sway compiler automatically inlines functions based on internal heuristics; however, the inline attribute may be used to suggest, but not require, code generation or code copying.

Generate code

To suggest code generation use the never keyword.

sway

{{#include ../../../../code/language/annotations/src/main.sw:never_inline}}

Copy code

To suggest code copy use the always keyword.

sway

{{#include ../../../../code/language/annotations/src/main.sw:always_inline}}