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89 lines
3.9 KiB
89 lines
3.9 KiB
2 years ago
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\chapter{Error, Warning, and Informational Messages}\label{ch:errors}
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Several error, warning, and informational messages will be printed by
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\aprepro{} if certain conditions are encountered during the parsing of an
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input file. The messages are of the form:
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\begin{apinp}
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Aprepro: Type: Message (file, line line\#)
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\end{apinp}
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Where \cmd{Type} is \cmd{ERROR} for an error message, \cmd{WARN} for a
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warning message, or \cmd{INFO} for an informational message; \cmd{Message}
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is an explanation of the problem, \cmd{file} is the filename being processed
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at the time of the message, and \cmd{line\#} is the number of the line
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within that file. Error messages are always output, Warning messages
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are output by default and can be turned off by using the \cmd{-W} or
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\cmd{--warning} command option, and Informational messages are turned off by
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default and can be turned on by using the \cmd{-M} or \cmd{--message} command
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option. (See Chapter~ref{ch:execution}.)
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\section{Error Messages}
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\begin{description}
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\item[Aprepro: ERROR: parse error (file, line line\#)]
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An unrecognized or ill-formed expression has been entered. Parsing of
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the file continues following this expression.
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\item[Aprepro: ERROR: Can't open 'file': No such file or directory] The file specified
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in the include or import command cannot be found or does not exist. Aprepro will terminate
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processing following this error message.
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\item[Aprepro: ERROR: Can't open 'file': Permission denied] The file specified in the
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include, import, or output command could not be opened due to insufficient permission.
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Aprepro will terminate processing following this error message.
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\item[Aprepro: ERROR: Improperly Nested ifdef/ifndef statements (file, line line\#)]
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An invalid ifdef/ifndef block has been detected. Typically this is caused by an
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extra endif or else statement.
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\item[Aprepro: ERROR: Zero divisor (file, line line\#)] An expression tried
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to divide by zero. The expression is given the value of the dividend and parsing continues.
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\item[Aprepro: ERROR: Invalid units system type. Valid types are: 'si', 'cgs', 'cgs-ev', 'shock', 'swap', 'ft-lbf-s', 'ft-lbm-s', 'in-lbf-s']
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The units system specified in the command could not be found. This
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is most likely due to a misspelling of the units system name.
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\item[Aprepro: ERROR: function (file, line line\#) DOMAIN error: Argument out of domain]
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The arithmetic function function has been passed an invalid
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argument. For example, the above error would be printed for each of
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the expressions:
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\begin{apinp}
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\{sqrt(-1.0)\} \{log(0.0)\} \{asin(1.1)\}
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\end{apinp}
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since the arguments are out of the valid domain for the function. The
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value returned by the function following an error is
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system-dependent. See the function's man page on your system for more
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information.
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\end{description}
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\section{Warning Messages}
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\begin{description}
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\item[Aprepro: WARN: Undefined variable 'variable' (file, line line\#)]
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A variable is used in an expression before it has been defined. The variable is
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set equal to zero or the null string (\texttt{"}\texttt{"}) and parsing continues.
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\item[Aprepro: WARN: Variable 'variable' redefined (file, line line\#)]
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A previously defined variable is being set equal to a new value.
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\item[Aprepro: (IMMUTABLE) Variable 'variable' is immutable and cannot be modified (file, line line\#)]
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The value of a variable that was created as an immutable variable was
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modified. No value will be returned by the expression. See page~\pageref{immutable} and
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page~\ref{immutable_block} for a description of immutable variables.
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\end{description}
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\section{Informational Messages}
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\begin{description}
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\item[Aprepro: INFO: Included File: 'filename' (file, line line\#)] The file filename
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is being included at line line\# of file file. This message will also be printed
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during the execution of a loop block since temporary files are used to implement
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the looping function, and during the execution of the units conversion and material
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database access routines.
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\end{description}
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