c++ - Parsing C Header Files -



c++ - Parsing C Header Files -

i have c header file have precompiled using gcc -e flag, , trying parse using lex , yacc; however, getting hung on typedef'd variables.

for example:

typedef unsigned long ulong; ulong = 5;

will throw syntax error @ sec line's ulong.

i have tried redefine part of grammar (found here) http://www.quut.com/c/ansi-c-grammar-y.html, under type_specifer replacing type_name identifier, create multiple s/r , r/r errors unable fix.

are there other approaches recommend? or different approach @ precompiling together?

in code link too: http://www.quut.com/c/ansi-c-grammar-y.html,

look @ bottom: see function

int check_type(void) { /* * pseudo code --- should check * * if (yytext == type_name) * homecoming type_name; * * homecoming identifier; */ /* * homecoming identifier */ homecoming identifier; }

you need write code identifies weather sequence (yytest, yytext+yylength] identifier or type_name. means in parser need build construction parse code function can identifier in structure.

pre-populate construction default types char/int/short/long/float/double etc. other types need add together parse input.

c++ c yacc lex

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