Technical data

Working with the Target Language

2-20

identifier variable. %break and %continue are optional directives that you can

include in the

%foreach directive:

•

%break can be used to exit the nearest enclosing %for, %foreach, or %switch

statement.

•

%continue can be used to begin the next iteration of a loop.

%for

The syntax of the

%for

multiple inclusion directive is:

%for ident1 = const-exp1, const-exp2, ident2 = const-exp3

%body

%break

%continue

%endbody

%endfor

The first portion of the %for directive is identical to the %foreach statement in

that it causes a loop to execute from

0 to N–1 times over the body of the loop. In

the normal case, it only includes the lines between

%body and %endbody, and

the lines between the

%for and %body, and ignores the lines between the

%endbody and %endfor.

The

%break and %continue directives act the same as they do in the %foreach

directive.

const-exp2 is a Boolean expression that indicates whether the loop should be

rolled. If

const-exp2 is true, identifier1 receives the value of const-exp3,

otherwise it receives the null string. When the loop is rolled, all of the lines

between the

%for and the %endfor are included in the output exactly one time.