break statement

The break statement is used to unconditionally transfer control to the end of a containing statement, which is referred to as the target statement. The target statement is indicated by the optional label name; otherwise, in the absence of a label, the break statement checks its containing statement, the containing statement of its containing statement, and so on, until it finds a ForStatement, DoStatement, WhileStatement, or SwitchStatement, and selects that statement as its target statement. It is a compile-time error if the break statement cannot identify a target statement.

The break statement does not complete.

Definite assignment rules:

• The break statement contributes the VAS from before the break statement to the end of the target statement.
• The target statement will join the contributed VAS with its own ending VAS.

    BreakStatement:
        break Nameopt ;