HLASM Language Reference

ALIAS Instruction
FRONT
The statement is placed at the front of the internal buffer.
Notes:
1. The ICTL instruction does not affect the format of the stored statements. The
assembler processes these statements according to the standard begin, end
and continue columns.
2. The assembler does not check the stored statements, even when the ISEQ
instruction is active.
Example:
MACRO
MAC1
.
| .A AINSERT 'INSERT RECORD NUMBER ONE',FRONT Insert record into the input stream
| .B AINSERT 'INSERT RECORD NUMBER TWO',FRONT Insert record at the top of the input stream
| .C AINSERT 'INSERT RECORD NUMBER THREE',BACK Insert record at the bottom of the input stream
| .
| .
| .
| &FIRST AREAD Retrieve record TWO from the top of the input stream
| .
| .D AINSERT 'INSERT RECORD NUMBER FOUR',FRONT Insert record at the top of the input stream
.
&SECOND AREAD
Retrieve record FOUR from the top of the input stream
.
MEND
CSECT
.
MAC1
.
END
In this example the variable &FIRST receives the operand of the AINSERT
statement created at .B. &SECOND receives the operand of the AINSERT
statement created at .D. The operand of the AINSERT statements at .A and .C are
in the internal buffer in the sequence .A followed by .C and are the next statements
processed when the macro generator has finished processing.
Figure 65 on page 263 shows code using AINSERT in statements 16, 22, and 23.
ALIAS Instruction
The ALIAS instruction specifies alternate names for the external symbols that
identify control sections, entry points, and external references. The instruction has
nothing to do with the link-time aliases in libraries.
►►──symbol──ALIAS──alias_string────────────────────────────────────►◄
symbol
is an external symbol that is represented by one of the following:
An ordinary symbol
A variable symbol that has been assigned a character string with a value
that is valid for an ordinary symbol
Chapter 5. Assembler Instruction Statements 109