Statements And Expressions
This section covers executable syntax.
FOL separates executable forms into two broad groups:
- statements: forms executed for control flow, side effects, or declaration within a block
- expressions: forms that compute a value
Statements
Statements include:
- local declarations
- assignments
- routine calls used for side effects
- branching
- looping
- nested blocks
Examples:
var x: int = 0;
x = 5;
if (x > 0) { .echo(x) }
for (item in items) { .echo(item) }
Expressions
Expressions include:
- operator expressions
- literal expressions
- range expressions
- access expressions
- call expressions
Expressions can be nested freely and may appear in declarations, assignments, return statements, control-flow headers, and other expressions.