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Copyright (c) Ross N. Williams 1992,1999. All rights reserved.
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<TITLE>3.21 Scanner/Parser Interface</TITLE>
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<A HREF="index.html"><FONT COLOR="#FFFFFF"><B>Reference</B></FONT></A><BR>
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<A HREF="intro.html"><FONT COLOR="#FFFFFF">1 Introduction</FONT></A><BR>
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<A HREF="interface.html"><FONT COLOR="#FFFFFF">2 Interface</FONT></A><BR>
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<A HREF="scanner.html"><FONT COLOR="#FFFFFF">3 Scanner</FONT></A><BR>
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<A HREF="parser.html"><FONT COLOR="#FFFFFF">4 Parser</FONT></A><BR>
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<A HREF="analyser.html"><FONT COLOR="#FFFFFF">5 Analyser</FONT></A><BR>
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<A HREF="tangle.html"><FONT COLOR="#FFFFFF">6 Tangle</FONT></A><BR>
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<A HREF="weave.html"><FONT COLOR="#FFFFFF">7 Weave</FONT></A><BR>
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<A HREF="shell.html"><FONT COLOR="#FFFFFF">8 Shell</FONT></A><BR>
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<A HREF="commands.html"><FONT COLOR="#FFFFFF">9 Commands</FONT></A><BR>
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<A HREF="glossary.html"><FONT COLOR="#FFFFFF">10 Glossary</FONT></A><BR>
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<A HREF="references.html"><FONT COLOR="#FFFFFF">11 References</FONT></A><BR>
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<P><FONT SIZE="5">3.21 Scanner/Parser Interface</FONT><BR>
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<P>If the scanner terminates without any errors, control
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is passed to the parser. The parser parses the token list
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generated by the scanner. The token list consists of text
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scraps, freestanding typesetter directives, and special
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<P>The user should bear in mind that <I>the scanner
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finishes running before the parser starts running.</I> This
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means that the scanner cannot be influenced in any way by
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higher order structures such as the parser might parse. For
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example, it is impossible to write a FunnelWeb macro to
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include a file, or to write a macro that inserts a
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<SAMP>vskip</SAMP> pragma into the input text.
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<A HREF="copyright.html">Copyright © Ross N. Williams 1992,1999. All rights reserved.</A><BR>
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