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Diffstat (limited to 'src/commentcnv.l')
| -rw-r--r-- | src/commentcnv.l | 185 |
1 files changed, 185 insertions, 0 deletions
diff --git a/src/commentcnv.l b/src/commentcnv.l new file mode 100644 index 0000000..d2da72c --- /dev/null +++ b/src/commentcnv.l @@ -0,0 +1,185 @@ +/***************************************************************************** + * + * + * + * Copyright (C) 1997-2002 by Dimitri van Heesch. + * + * Permission to use, copy, modify, and distribute this software and its + * documentation under the terms of the GNU General Public License is hereby + * granted. No representations are made about the suitability of this software + * for any purpose. It is provided "as is" without express or implied warranty. + * See the GNU General Public License for more details. + * + * Documents produced by Doxygen are derivative works derived from the + * input used in their production; they are not affected by this license. + * + */ + +%{ + +#define YY_NEVER_INTERACTIVE 1 + +#include <stdio.h> +#include <stdlib.h> + +#include "bufstr.h" + +static BufStr *g_inBuf; +static BufStr *g_outBuf; +static int g_inBufPos; + +static void replaceCommentMarker(const char *s,int len) +{ + const char *p=s; + char c; + // copy blanks + while ((c=*p) && (c==' ' || c=='\t' || c=='\n')) + { + g_outBuf->addChar(c); + p++; + } + // replace start of comment marker by spaces + while ((c=*p) && (c=='/' || c=='!')) + { + g_outBuf->addChar(' '); + p++; + if (*p=='<') // comment-after-item marker + { + g_outBuf->addChar(' '); + p++; + } + if (c=='!') // end after first ! + { + break; + } + } + // copy comment line to output + g_outBuf->addArray(p,len-(p-s)); +} + +static inline void copyToOutput(const char *s,int len) +{ + g_outBuf->addArray(s,len); +} + +#undef YY_INPUT +#define YY_INPUT(buf,result,max_size) result=yyread(buf,max_size); + +static int yyread(char *buf,int max_size) +{ + int bytesInBuf = g_inBuf->curPos()-g_inBufPos; + int bytesToCopy = QMIN(max_size,bytesInBuf); + memcpy(buf,g_inBuf->data()+g_inBufPos,bytesToCopy); + g_inBufPos+=bytesToCopy; + return bytesToCopy; +} + +%} + +%option noyywrap +%option nounput + +%x Scan +%x SkipString +%x SComment +%x CComment +%x Verbatim + +%% + +<Scan>[^\"\/\n\\]* { /* eat anything that is not " / or \n */ + copyToOutput(yytext,yyleng); + } +<Scan>"\"" { /* start of a string */ + copyToOutput(yytext,yyleng); + BEGIN(SkipString); + } +<Scan>\n { /* new line */ + copyToOutput(yytext,yyleng); + } +<Scan>("//!"|"///").*\n/[ \t]*"//" { /* start C++ style special comment block */ + copyToOutput("/*!",3); + copyToOutput(yytext+3,yyleng-3); + BEGIN(SComment); + } +<Scan>"//".*\n { /* one line C++ comment */ + copyToOutput(yytext,yyleng); + } +<Scan>"/*" { /* start of a C comment */ + copyToOutput(yytext,yyleng); + BEGIN(CComment); + } +<Scan>"\\verbatim" { /* start of a verbatim block */ + copyToOutput(yytext,yyleng); + BEGIN(Verbatim); + } +<Scan>. { /* any other character */ + copyToOutput(yytext,yyleng); + } +<Verbatim>"\\endverbatim" { /* end of verbatim block */ + copyToOutput(yytext,yyleng); + BEGIN(Scan); + } +<Verbatim>[^\\\n]* { /* any character not a backslash or new line */ + copyToOutput(yytext,yyleng); + } +<Verbatim>\n { /* new line in verbatim block */ + copyToOutput(yytext,yyleng); + } +<Verbatim>. { /* any other character */ + copyToOutput(yytext,yyleng); + } +<SkipString>\\. { /* escaped character in string */ + copyToOutput(yytext,yyleng); + } +<SkipString>"\"" { /* end of string */ + copyToOutput(yytext,yyleng); + BEGIN(Scan); + } +<SkipString>. { /* any other string character */ + copyToOutput(yytext,yyleng); + } +<SkipString>\n { /* new line inside string (illegal for some compilers) */ + copyToOutput(yytext,yyleng); + } +<CComment>[^*\n]* { /* anything that is not a '*' */ + copyToOutput(yytext,yyleng); + } +<CComment>"*"+[^*/\n]* { /* stars without slashes */ + copyToOutput(yytext,yyleng); + } +<CComment>\n { /* new line in comment */ + copyToOutput(yytext,yyleng); + } +<CComment>"*"+"/" { /* end of C comment */ + copyToOutput(yytext,yyleng); + BEGIN(Scan); + } +<SComment>^[ \t]*"//".*/\n { /* second line of special comment */ + replaceCommentMarker(yytext,yyleng); + } +<SComment>\n[ \t]*"//".*/\n { /* other line of special comment */ + replaceCommentMarker(yytext,yyleng); + } +<SComment>\n { /* end of special comment */ + copyToOutput(" */",3); + copyToOutput(yytext,yyleng); + BEGIN(Scan); + } + +%% + +void convertCppComments(BufStr *inBuf,BufStr *outBuf) +{ + g_inBuf = inBuf; + g_outBuf = outBuf; + g_inBufPos = 0; + BEGIN(Scan); + yylex(); +} + +//---------------------------------------------------------------------------- +extern "C" { // some bogus code to keep the compiler happy + void commentcnvYYdummy() { yy_flex_realloc(0,0); } +} + |