3.21 Scanner/Parser Interface
3.21 Scanner/Parser Interface
If the scanner terminates without any errors, control is passed to
the parser. The parser parses the token list generated by the
scanner. The token list consists of text scraps, freestanding
typesetter directives, and special sequence tokens.
The user should bear in mind that 
the scanner finishes running
before the parser starts running.
  This means that the scanner
cannot be influenced in any way by higher order structures such
1 Introduction
as the parser might parse. For example, it is impossible to write
2 Interface
a FunnelWeb macro to include a file, or to write a macro that
3 Scanner
inserts a vskip pragma into the input text.
4 Parser
5 Analyser
6 Tangle
7 Weave
Copyright   Ross N. Williams 1992,1999. All rights
8 Shell
9 Commands
10 Glossary
11 References
http://www.ross.net/funnelweb/reference/scanner_parser.html [3/3/2000 10:48:29 PM]

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