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        {\Huge\bf Exception Handling in \CFA}

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        by \\

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        {\Large Andrew James Beach} \\

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        A thesis \\
        presented to the University of Waterloo \\
        in fulfillment of the \\
        thesis requirement for the degree of \\
        Master of Mathematics \\
        in \\
        Computer Science \\

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        Waterloo, Ontario, Canada, \the\year \\

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        \copyright{} Andrew James Beach \the\year \\
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% E X A M I N I N G   C O M M I T T E E (Required for Ph.D. theses only)
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\begin{center}\textbf{Examining Committee Membership}\end{center}
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The following served on the Examining Committee for this thesis.
The decision of the Examining Committee is by majority vote.
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Internal-External Member: \=  \kill % using longest text to define tab length
External Examiner: \>  Bruce Bruce \\
\> Professor, Dept. of Philosophy of Zoology, University of Wallamaloo \\
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Supervisor(s): \> Ann Elk \\
\> Professor, Dept. of Zoology, University of Waterloo \\
\> Andrea Anaconda \\
\> Professor Emeritus, Dept. of Zoology, University of Waterloo \\
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Internal Member: \> Pamela Python \\
\> Professor, Dept. of Zoology, University of Waterloo \\
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Internal-External Member: \> Meta Meta \\
\> Professor, Dept. of Philosophy, University of Waterloo \\
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Other Member(s): \> Leeping Fang \\
\> Professor, Dept. of Fine Art, University of Waterloo \\
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I hereby declare that I am the sole author of this thesis. This is a true copy
of the thesis, including any required final revisions, as accepted by my
examiners.

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  \noindent
I understand that my thesis may be made electronically available to the public.

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% A B S T R A C T
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\begin{center}\textbf{Abstract}\end{center}

The \CFA (Cforall) programming language is an evolutionary refinement of
the C programming language, adding modern programming features without
changing the programming paradigms of C.
One of these modern programming features is more powerful error handling
through the addition of an exception handling mechanism (EHM).

This thesis covers the design and implementation of the \CFA EHM,
along with a review of the other required \CFA features.
The EHM includes common features of termination exception handling,
which abandons and recovers from an operation,
and similar support for resumption exception handling,
which repairs and continues with an operation.
The design of both has been adapted to utilize other tools \CFA provides,
as well as fit with the assertion based interfaces of the language.

The EHM has been implemented into the \CFA compiler and run-time environment.
Although it has not yet been optimized, performance testing has shown it has
comparable performance to other EHMs,
which is sufficient for use in current \CFA programs.

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\begin{center}\textbf{Acknowledgements}\end{center}

I would like to thank all the people who made this thesis possible.
(I'm waiting until who is involved is finalized.)

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\begin{center}\textbf{Dedication}\end{center}

This is dedicated to the one I love.
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