HP 3000 Manuals HP 3000 Manuals
TRANSACT Enhancements by Gary Peck, Commercial Systems Division The Transact/V enhancements described in this article were chosen from the list of enhancement requests presented to Hewlett-Packard at the SIGRAPID conference at Annapolis, Maryland in February, 1987. They represent high priority requests identified by the Transact users present at the conference. These enhancements extend the Transact language and compiler to allow: 1. More capable "IF" , "REPEAT" , and "WHILE" statements. 2. Array subscripting. 3. Class condition tests. 4. Programs to automatically "list" all items used. 5. Programs to process arithmetic traps on calculations. 6. Concatenate multiple items with a "MOVE" verb. 7. Print the list of items extracted by the "LIST(AUTO)" verb. These enhancements are implemented under MPE V/E and under MPE XL compatibility mode in TRANSACT/V A.06.00; and carried forward to the TRANSACT/XL compiler A.00.00. Compiler Enhancements This section describes enhancements to the TRANSACT/V compiler which do not require modifying run time functionality, and do not require extensions to the language. The enhancements described here are either optional (i.e. invoked via a compiler option) or implemented as permanent changes to the compiler. Print LIST(auto) Items The Transact compiler prints the items to be placed in the list register when it encounters a "LIST(AUTO) filename" statement and the DEFN option is used on the compile. The items will be included in the compile listing as a generated comment and will give the name and relative list register position of each item placed in the list register. For a "LIST(AUTO) @" , the items will be printed at the end of the segment or program. LANGUAGE ENHANCEMENTS This section provides a detailed description of language enhancements to TRANSACT/V. For each enhancement, the format for the new language syntax is provided along with a discussion of new options. Only changes to current verb syntax are mentioned. Those aspects of the verbs that remain unchanged are not mentioned here.