DeforaOS/CPP
DeforaOS/CPP
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Added a filter for comments

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This commit is contained in:
Pierre Pronchery 2008-05-13 13:18:18 +00:00
parent 0c17a6cf60
commit 187a04704d
3 changed files with 38 additions and 8 deletions
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4
include/cpp.h
View File

@ -30,7 +30,8 @@ typedef enum _CppFilter
{
CPP_FILTER_NONE = 0,
CPP_FILTER_TRIGRAPH = 1,
CPP_FILTER_WHITESPACE = 2
CPP_FILTER_WHITESPACE = 2,
CPP_FILTER_COMMENT = 4
} CppFilter;
typedef enum _CppCode
@ -101,6 +102,7 @@ typedef enum _CppCode
CPP_CODE_SQUOTE,
CPP_CODE_WHITESPACE,
CPP_CODE_NEWLINE,
CPP_CODE_COMMENT,
CPP_CODE_WORD, /* FIXME numbers and keywords? */
CPP_CODE_UNKNOWN
} CppCode;

36
src/cpp.c
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@ -487,7 +487,8 @@ static int _cpp_callback_otherspace(Parser * parser, Token * token, int c,
size_t len = 0;
char * p;
if(!isspace(c) || c == '\n')
assert(c != '\n');
if(!isspace(c))
return 1;
#ifdef DEBUG
fprintf(stderr, "DEBUG: %s()\n", __func__);
@ -520,8 +521,12 @@ static int _cpp_callback_otherspace(Parser * parser, Token * token, int c,
/* cpp_callback_comment */
static int _cpp_callback_comment(Parser * parser, Token * token, int c,
void * data)
/* TODO implement a flag to actually keep the content */
{
Cpp * cpp = data;
char * str = NULL;
size_t len = 2;
char * p;
if(c != '/')
return 1;
#ifdef DEBUG
@ -534,6 +539,15 @@ static int _cpp_callback_comment(Parser * parser, Token * token, int c,
return 0;
}
for(c = parser_scan_filter(parser); c != EOF;)
{
if(!(cpp->filters & CPP_FILTER_COMMENT))
{
if((p = realloc(str, len + 3)) == NULL)
return -error_set_code(1, "%s", strerror(
errno));
str = p;
str[len++] = c;
}
if(c == '*')
{
if((c = parser_scan_filter(parser)) == '/')
@ -541,10 +555,24 @@ static int _cpp_callback_comment(Parser * parser, Token * token, int c,
}
else
c = parser_scan_filter(parser);
}
if(c == EOF)
return -1;
return -error_set_code(1, "%s", "End of file within a comment");
if(str != NULL)
{
str[0] = '/';
str[1] = '*';
str[len++] = '/';
str[len] = '\0';
token_set_code(token, CPP_CODE_COMMENT);
token_set_string(token, str);
free(str);
}
else
{
token_set_code(token, CPP_CODE_WHITESPACE);
token_set_string(token, " ");
}
parser_scan_filter(parser);
return 0;
}
@ -996,7 +1024,7 @@ Cpp * cpp_new(char const * filename, int filters)
parser_add_callback(cpp->parser, _cpp_callback_newline, cpp);
parser_add_callback(cpp->parser, _cpp_callback_otherspace, cpp);
}
parser_add_callback(cpp->parser, _cpp_callback_comment, NULL);
parser_add_callback(cpp->parser, _cpp_callback_comment, cpp);
parser_add_callback(cpp->parser, _cpp_callback_directive, cpp);
parser_add_callback(cpp->parser, _cpp_callback_comma, NULL);
parser_add_callback(cpp->parser, _cpp_callback_operator, NULL);

2
src/main.c
View File

@ -75,7 +75,7 @@ static int _cpp(Prefs * prefs, int filec, char * filev[])
static int _cpp_do(Prefs * prefs, FILE * fp, char const * filename)
{
int ret;
int filter = CPP_FILTER_WHITESPACE;
int filter = CPP_FILTER_WHITESPACE | CPP_FILTER_COMMENT;
Cpp * cpp;
size_t i;
size_t j;