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Side Cross Reference for Program Listings

IP.com Disclosure Number: IPCOM000081200D
Original Publication Date: 1974-Apr-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Melkun, BF: AUTHOR

Abstract

(Image Omitted) The entries in the CROSS REFERENCE column locate the places where definitions are found for names referenced in the program. Each entry in the CROSS REFERENCE column is found at the right end of a particular statement. Each entry is respectively associated with a particular name found within the same statement in the same order. Each entry locates the statement in which the associated name is defined.

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Side Cross Reference for Program Listings

(Image Omitted)

The entries in the CROSS REFERENCE column locate the places where definitions are found for names referenced in the program. Each entry in the CROSS REFERENCE column is found at the right end of a particular statement. Each entry is respectively associated with a particular name found within the same statement in the same order. Each entry locates the statement in which the associated name is defined.

The CROSS REFERENCE column can replace or supplement the usual (and not illustrated) CROSS REFERENCE table generated by PL/l (and other) compilers. The illustrated CROSS REFERENCE column provides a way of avoiding the need for the usual table when working with a program listing

In more detail, the illustrated sample PL/l program listing contains the usual PL/l statement numbers for the respective source statements, plus the additional column, headed CROSS REFERENCE. This CROSS REFERENCE column has an entry for each nonkeyword name, such as names for labels and procedures, found in the same statement. The entry specifies the statement number of the statement in which the name is declared. For names of built-in facilities (e.g., LENGTH), the entry can contain an indicator, illustrated as BI in statement number 4.

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