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comments about seeking to switches

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David Rose 2004-06-24 07:54:48 +00:00
parent 803712f986
commit da134a3737
1 changed files with 14 additions and 0 deletions
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direct/src/doc/dcPacker.txt
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@ -125,6 +125,13 @@ pop() to unpack the nested elements of an array that you seek to.
return; return;
} }
To seek to a field nested within another structure, use a dot to
compose the names: "parentName.fieldName".
In unpack mode, you may seek to any field that has a name, including a
field within the currently active case of a switch. You may also seek
to a switch parameter variable.
REPACK MODE (random write) REPACK MODE (random write)
@ -150,6 +157,13 @@ field with get_data() and get_length(), just as in pack mode.
memcpy(result, packer.get_data(), packer.get_length()); memcpy(result, packer.get_data(), packer.get_length());
In repack mode, you may not traverse from beginning to end of the
record--you must explicitly seek to each field you intend to repack.
You may seek to a field within the currently active case of a switch.
You may not seek directly to a switch parameter variable--repacking
this would invalidate the remaining contents of the switch--but you
may seek to the switch itself (if it has a name) and repack the entire
contents of the switch at once.
ADDITIONAL NOTES ADDITIONAL NOTES