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wpp: Fix expansion of macro bodies following the parsing of a numerical digit. 

The current regular expression causes all letters and spaces (among
other characters) following the appearance of a digit to be classed as
a literal, including C identifiers which may need to be expanded.

The expression was intended to catch the remaining characters that
were not covered by the first two rules ([^a-zA-Z0-9'"#/\\\n]+ and
{cident}), but the [^'"#/\\\n] expression caught {cident} as well.
While one solution would have been just to catch the expression that
match [a-zA-Z0-9]* that don't match {cident}, i.e. [0-9][a-zA-Z0-9]*,
in the interests of avoiding unnecessary multiple LITERALs being
generated and then combined during parsing the expression also
includes the first expression, making it
[0-9][a-zA-Z0-9]*[^a-zA-Z0-9'"#/\\\n]*.
This commit is contained in:
Rob Shearman 2010-01-18 22:15:09 +00:00 committed by Alexandre Julliard
parent 226998185f
commit 3fecf9ddcd
1 changed files with 1 additions and 1 deletions
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2
libs/wpp/ppl.l
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@ -527,7 +527,7 @@ void pp_writestring(const char *format, ...)
<pp_mbody>{cident} ppy_lval.cptr = pp_xstrdup(ppy_text); return tIDENT;
<pp_mbody>\#\# return tCONCAT;
<pp_mbody>\# return tSTRINGIZE;
<pp_mbody>[0-9][^'"#/\\\n]* ppy_lval.cptr = pp_xstrdup(ppy_text); return tLITERAL;
<pp_mbody>[0-9][a-zA-Z0-9]*[^a-zA-Z0-9'"#/\\\n]* ppy_lval.cptr = pp_xstrdup(ppy_text); return tLITERAL;
<pp_mbody>(\\\r?)|(\/[^/*'"#\\\n]*) ppy_lval.cptr = pp_xstrdup(ppy_text); return tLITERAL;
<pp_mbody>\\\r?\n{ws}+ newline(0); ppy_lval.cptr = pp_xstrdup(" "); return tLITERAL;
<pp_mbody>\\\r?\n newline(0);