extern void do_sharp (void)
{
char *w;
char c;
w = read_ctrl();
if (strcmp(w, "ifdef") == 0)
{
do_ifdef(1);
}
else if (strcmp(w, "ifndef") == 0)
{
do_ifndef(1);
}
else if (strcmp(w, "if") == 0)
{
do_if(1);
}
else if (strcmp(w, "else") == 0)
{
do_else(1);
}
else if (strcmp(w, "elif") == 0)
{
do_elif(1);
}
else if (strcmp(w, "endif") == 0)
{
do_endif(1);
}
else if (strcmp(w, "include") == 0)
{
do_include(1);
}
else if (strcmp(w, "define") == 0)
{
do_define(1, 0);
}
else if (strcmp(w, "undef") == 0)
{
do_undef(1);
}
else if (strcmp(w, "line") == 0)
{
do_line();
}
else if (strcmp(w, "pragma") == 0)
{
do_pragma();
}
else if (strcmp(w, "") == 0)
{}
else
{
int isnull;
isnull = 0;
if (strcmp(w, "") == 0)
{
c = Get();
if (c != '\n')
{
Push(c);
}
else
{
isnull = 1;
}
}
if (!isnull && !in_false_if())
{
err_head();
fprintf(stderr, "unknown control `%s'\n", w);
flush_sharp_line();
}
}
maybe_print('\n');
os_free(w);
}
bool Parser::SM_Run()
{
FILE *out_fp = included_files.top()->ofile;
const char *pos;
TRI_STATE result = TSV_0;
const char *output = pline.from.c_str();
sym_t preprocessor;
CC_STRING expanded_line;
do {
pos = pline.parsed.c_str();
preprocessor = GetPreprocessor(pos, &pos);
if(preprocessor != pline.pp_id || (pline.content != -1 && pline.content + pline.parsed.c_str() != pos) ) {
fprintf(stderr, "%s:%zu\n", dv_current_file, dv_current_line);
fprintf(stderr, " (%d) %s\n", pline.content, pline.parsed.c_str());
fprintf(stderr, " %d vs %d\n", preprocessor, pline.pp_id);
exit(1);
}
} while(0);
pos = pline.parsed.c_str() + pline.content;
dv_current_file = GetCurrentFileName().c_str();
dv_current_line = GetCurrentLineNumber();
// GDB_TRAP2(strstr(dv_current_file,"makeint.h"), (dv_current_line==30));
// GDB_TRAP2(strstr(dv_current_file,"/usr/include/features.h"), dv_current_line==131);
switch(pline.pp_id) {
case SSID_SHARP_IF:
if( superior_conditional_value(true) != TSV_0 )
result = (TRI_STATE) Compute(pos);
goto handle_if_branch;
case SSID_SHARP_IFNDEF:
if( superior_conditional_value(true) != TSV_0 )
result = (TRI_STATE) CheckSymbolDefined(pos, true, NULL);
goto handle_if_branch;
case SSID_SHARP_IFDEF:
if( superior_conditional_value(true) != TSV_0 )
result = (TRI_STATE) CheckSymbolDefined(pos, false, NULL);
handle_if_branch:
if( result == TSV_X ) {
if( gvar_preprocess_mode ) {
if(errmsg.isnull())
errmsg = "Error on processing conditional";
goto done;
}
}
conditionals.push(new CConditionalChain());
upper_chain()->enter_if(result);
upper_chain()->filename = dv_current_file;
upper_chain()->line = dv_current_line;
if(eval_current_conditional() != TSV_X)
output = NULL;
included_files.top()->add_if(result);
break;
case SSID_SHARP_ELIF:
if( superior_conditional_value(false) == TSV_0 ) {
included_files.top()->add_elif(false);
goto done;
}
if( upper_chain()->has_true() ) {
upper_chain()->enter_elif(TSV_0);
included_files.top()->add_elif(false);
goto done;
}
result = (TRI_STATE) Compute(pos);
if( gvar_preprocess_mode && result == TSV_X)
goto done;
/*
* Transformation on the condition of:
*
* 1) #if 0
* #elif X --> #if X
*
* 2) #elif X
* #elif 1 --> #else
*/
if( eval_current_conditional() == TSV_0 ) {
if(result == TSV_X) {
pline.to = do_elif(1);
output = pline.to.c_str();
} else
output = NULL;
} else {
if(result == TSV_1) {
pline.to = do_elif(2);
output = pline.to.c_str();
} else if(result == TSV_0)
output = NULL;
}
upper_chain()->enter_elif(result);
included_files.top()->add_elif(result);
break;
case SSID_SHARP_ELSE:
if( superior_conditional_value(false) == TSV_0 ) {
included_files.top()->add_else(false);
goto done;
}
result = upper_chain()->enter_else();
included_files.top()->add_else(result);
if( eval_current_conditional() != TSV_X )
output = NULL;
break;
case SSID_SHARP_ENDIF:
included_files.top()->add_endif();
CConditionalChain *c;
if( ! upper_chain()->keep_endif() )
output = NULL;
if( conditionals.size() == 0 ) {
errmsg = "Unmatched #endif";
goto done;
}
conditionals.pop(c);
delete c;
break;
default:
if(eval_current_conditional() == TSV_0)
goto done;
if(eval_current_conditional() == TSV_X)
goto print_and_exit;
switch(pline.pp_id) {
case SSID_SHARP_DEFINE:
if(!do_define(pos))
goto error_out;
break;
case SSID_SHARP_UNDEF:
handle_undef(intab, pos);
break;
case SSID_SHARP_INCLUDE:
case SSID_SHARP_INCLUDE_NEXT:
if( gvar_preprocess_mode )
do_include(pline.pp_id, pos, &output);
break;
default:
if(gvar_expand_macros) {
pos = pline.parsed.c_str();
expanded_line = ExpandLine(intab, false, pos, errmsg);
if(!errmsg.isnull())
goto error_out;
if(included_files.size() == 1) {
expanded_line += '\n';
output = expanded_line.c_str();
}
}
}
}
print_and_exit:
if( out_fp != NULL && output != NULL )
fprintf(out_fp, "%s", output);
done:
pline.comment_start = -1;
if(gvar_preprocess_mode && GetError()) {
IncludedFile *tmp;
CC_STRING pmsg, ts;
while(included_files.size() > 0) {
included_files.pop(tmp);
ts.Format(" %s:%u\n", tmp->ifile->name.c_str(), tmp->ifile->line);
pmsg += ts;
}
if( !pmsg.isnull() ) {
errmsg = pmsg + errmsg;
}
}
return gvar_preprocess_mode ? (GetError() == NULL) : true;
error_out:
return false;
}
int yylex()
{
if (delim_flag) {
assert(lookahead_token == -1);
if (delim_flag == 2) {
if ((yylval.str = get_thru_arg()) != 0)
return DELIMITED;
else
return 0;
}
else {
if (get_delimited()) {
token_buffer += '\0';
yylval.str = strsave(token_buffer.contents());
return DELIMITED;
}
else
return 0;
}
}
for (;;) {
int t;
if (lookahead_token >= 0) {
t = lookahead_token;
lookahead_token = -1;
}
else
t = get_token(1);
switch (t) {
case '\n':
return ';';
case EOF:
return 0;
case DEFINE:
do_define();
break;
case UNDEF:
do_undef();
break;
case ORDINAL:
yylval.n = token_int;
return t;
case NUMBER:
yylval.x = token_double;
return t;
case COMMAND_LINE:
case TEXT:
token_buffer += '\0';
if (!input_stack::get_location(&yylval.lstr.filename,
&yylval.lstr.lineno)) {
yylval.lstr.filename = 0;
yylval.lstr.lineno = -1;
}
yylval.lstr.str = strsave(token_buffer.contents());
return t;
case LABEL:
case VARIABLE:
token_buffer += '\0';
yylval.str = strsave(token_buffer.contents());
return t;
case LEFT:
// change LEFT to LEFT_CORNER when followed by OF
old_context_buffer = context_buffer;
lookahead_token = get_token(1);
if (lookahead_token == OF)
return LEFT_CORNER;
else
return t;
case RIGHT:
// change RIGHT to RIGHT_CORNER when followed by OF
old_context_buffer = context_buffer;
lookahead_token = get_token(1);
if (lookahead_token == OF)
return RIGHT_CORNER;
else
return t;
case UPPER:
// recognise UPPER only before LEFT or RIGHT
old_context_buffer = context_buffer;
lookahead_token = get_token(1);
if (lookahead_token != LEFT && lookahead_token != RIGHT) {
yylval.str = strsave("upper");
return VARIABLE;
}
else
return t;
case LOWER:
// recognise LOWER only before LEFT or RIGHT
old_context_buffer = context_buffer;
lookahead_token = get_token(1);
if (lookahead_token != LEFT && lookahead_token != RIGHT) {
yylval.str = strsave("lower");
return VARIABLE;
}
else
return t;
case NORTH:
// recognise NORTH only before OF
old_context_buffer = context_buffer;
lookahead_token = get_token(1);
if (lookahead_token != OF) {
yylval.str = strsave("north");
return VARIABLE;
}
else
return t;
case SOUTH:
// recognise SOUTH only before OF
old_context_buffer = context_buffer;
lookahead_token = get_token(1);
if (lookahead_token != OF) {
yylval.str = strsave("south");
return VARIABLE;
}
else
return t;
case EAST:
// recognise EAST only before OF
old_context_buffer = context_buffer;
lookahead_token = get_token(1);
if (lookahead_token != OF) {
yylval.str = strsave("east");
return VARIABLE;
}
else
return t;
case WEST:
// recognise WEST only before OF
old_context_buffer = context_buffer;
lookahead_token = get_token(1);
if (lookahead_token != OF) {
yylval.str = strsave("west");
return VARIABLE;
}
else
return t;
case TOP:
// recognise TOP only before OF
old_context_buffer = context_buffer;
lookahead_token = get_token(1);
if (lookahead_token != OF) {
yylval.str = strsave("top");
return VARIABLE;
}
else
return t;
case BOTTOM:
// recognise BOTTOM only before OF
old_context_buffer = context_buffer;
lookahead_token = get_token(1);
if (lookahead_token != OF) {
yylval.str = strsave("bottom");
return VARIABLE;
}
else
return t;
case CENTER:
// recognise CENTER only before OF
old_context_buffer = context_buffer;
lookahead_token = get_token(1);
if (lookahead_token != OF) {
yylval.str = strsave("center");
return VARIABLE;
}
else
return t;
case START:
// recognise START only before OF
old_context_buffer = context_buffer;
lookahead_token = get_token(1);
if (lookahead_token != OF) {
yylval.str = strsave("start");
return VARIABLE;
}
else
return t;
case END:
// recognise END only before OF
old_context_buffer = context_buffer;
lookahead_token = get_token(1);
if (lookahead_token != OF) {
yylval.str = strsave("end");
return VARIABLE;
}
else
return t;
default:
return t;
}
}
}