Enform Plus Reference Manual

Enform Plus Language Elements

Enform Plus Reference Manual—422684-001

3-23

Logical Expressions

The syntax of a logical expression is:

condition

has one of the following forms:

conditional-operator

is one of the conditional operators shown in Table 3-4 on page 3-22.

expression

is an IF/THEN/ELSE or arithmetic expression.

pattern-match

is a pattern of numbers or characters, enclosed within both quotation marks and

brackets. The syntax for a pattern-match is:

is an integer indicating that exactly n number of characters must precede or follow

string-literal when it is found in a field value.

string-literal

is the pattern of characters or numbers to which the field is being compared. The

string-literal must be enclosed in quotation marks.

[NOT] condition [ { AND | OR } ] [NOT] condition ] ...

{ { BEGINS WITH } }

{ { ']' } }

{ [not] { CONTAINS } string-literal }

{ { '>' } }

{ { conditional operator } }

field-name { { EQUAL } }

{ { EQ } }

{ { IS } { value-range } }

{ [NOT] { = } { "["pattern-match"]" } }

{ { NE } }

{ { <> } }

{ variable } { variable }

{ field-name } [NOT] conditional-operator { field-name }

{ expression } { expression }

{ { n } { n } }

{ "[" { m,n } string-literal { m,n } "]" }

{ { - } { - } }