This module declares the error exception used by the stable stub generator. There is an exception E which is used to propagate error messages to the top level procedure in Main.m3. Warning() and Failure() are used to print out warnings to the standard error stream. They do not halt the generation of stub code. Further there is a Fatal() procedure which halts the stub generator in case of an unexpected error.

INTERFACE StablegenError;

EXCEPTION E(TEXT);

PROCEDURE Warning (msg: TEXT);

Write msg to Stdio.stderr, preceeded by ''stablegen (warning):`` and followed by a newline

PROCEDURE Failure (msg: TEXT);

Write msg to Stdio.stderr, preceeded by ''stablegen error:`` and followed by a newline

PROCEDURE Fatal (msg: TEXT);

Write msg to Stdio.stderr, preceeded by ''stablegen: ***fatal error***`` and and halt the program (Process.Exit())

END StablegenError.