Caché ObjectScript Reference - InterSystems Documentation

System and Other FunctionsDescriptionYou can use $ZUTIL(62,1) to check the syntax of a line of Caché ObjectScript code, specifiedas a quoted string. If code contains a syntax error, $ZUTIL(62,1) returns a string with thefollowing format:nn,,textornn,,textWhere nn is the character position number (counting from 0) that evoked the error, is a literal (returned in a terminal session, otherwise omitted), and text is an errormessage, such as “Invalid command”, “Invalid function name”, “Invalid expression”, “Invalidspecial variable”, or “Expected space”. $ZUTIL(62,1) returns the first syntax error detected;the line of code may contain additional syntax errors.If no syntax error exists, $ZUTIL(62,1) returns the null string.ExamplesIn following example, $ZUTIL(62,1) checks the syntax of a line of code and, finding nosyntax error, returns the null string:SET err=$ZUTIL(62,1," SET x=1 HANG 5")IF err="" { WRITE "syntax correct" }ELSE { WRITE err }QUITNote that leading blanks are ignored when checking syntax; you may include or omit leadingblanks.In following example, $ZUTIL(62,1) checks the syntax of a line of code and finds a syntaxerror (SET cannot use the '= operator).SET err=$ZUTIL(62,1," SET x'=1")IF err="" { WRITE "syntax correct" }ELSE { WRITE err }QUITIt returns: 9,,Error in SET command. Note that the apostrophe character is at position 9,counting from 0 (and including the four leading blanks).The following example tests several lines of program code, and returns a syntax error foreach:594 Caché ObjectScript Reference