3.12 Pragma: Indentation
3.12 Pragma: Indentation
When FunnelWeb expands a macro, it can do so in two ways.
First it can treat the text it is processing as a one dimensional
Tutorial
stream of text, and merely insert the body of the macro in place
of the macro call. Second, it can treat the text of the macro as a
Developer
two dimensional object and indent each line of the macro body
by the amount that the macro call itself was indented. Consider
Reference
the following macros.
1 Introduction
2 Interface
@$@@{@ 
i=1;
3 Scanner
while (i<=N)
4 Parser
   @
5 Analyser
endwhile
6 Tangle
@}
7 Weave
8 Shell
@$@@{@ 
9 Commands
a[i]:=0;
10 Glossary
i:=i+1;@}
11 References
Under the regime of 
no indentation
 the loop structure macro
expands to:
SEARCH
i=1;
while (i<=N)
   a[i]:=0;
i:=i+1;
endwhile
Under the regime of 
blank indentation
 the loop structure
macro expands to:
i=1;
while (i<=N)
   a[i]:=0;
   i:=i+1;
endwhile
The indentation pragma determines which of these two regimes
will be used to expand the macros when constructing the
product files. The syntax of the pragma is:
http://www.ross.net/funnelweb/reference/scanner_prag_ind.html (1 of 2) [3/3/2000 10:47:50 PM]





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