Dear all,
the online help for the -error- statement does not decribe the range
for the argument. Is it described somewhere else? The problem I face
is that I find particularly convenient to return negative return codes
not to conflict with the error codes reserved for Stata. So my plugin
returns codes like -1, -2, -3 etc. In the .ado wrapper I analyse this
code, issue an error message and abort with the same error code.
Note that Stata 10 correctly shows code _rc = -1 in the review window after:
plugin call FooBarExternal
r(-1);
But:
//----------------------------------------------
program FooBar
capture plugin call FooBarExternal `0'
if (_rc!=0) {
if (_rc==-1) display "Not enough arguments. Alpha must be specified."
if (_rc==-2) display "Not enough arguments. Beta must be specified."
error _rc
}
end
program define FooBarExternal, plugin using("FooBar.plu" )
//----------------------------------------------
When I call FooBar from a .do file, I capture and analyse the return
code. However I never see my values -1, -2, -3. After some trials, the
problem seems to be in the -error- command:
. error -1
r(100000);
So regardless of the code, the value will be 100000. Is this intended?
Which error codes are reserved for Stata use? Is there a full list of
these codes (and messages if possible)? Which codes may a Stata
programmer use for his/her own commands?
Thank you,
Sergiy Radyakin
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