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Adding support for string macros and macros with arguments after include

This commit is contained in:
combinatorylogic 2017-09-21 18:25:02 +01:00
parent 143c0abd33
commit 64ca0be971
1 changed files with 69 additions and 41 deletions
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110
frontends/verilog/preproc.cc
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@ -182,15 +182,19 @@ static std::string next_token(bool pass_newline = false)
{
const char *ok = "abcdefghijklmnopqrstuvwxyz_ABCDEFGHIJKLMNOPQRSTUVWXYZ$0123456789";
if (ch == '`' || strchr(ok, ch) != NULL)
while ((ch = next_char()) != 0) {
if (strchr(ok, ch) == NULL) {
return_char(ch);
break;
}
{
ch = next_char();
if (ch == '"') {
token += ch;
}
} else do {
if (strchr(ok, ch) == NULL) {
return_char(ch);
break;
}
token += ch;
} while ((ch = next_char()) != 0);
}
}
return token;
}
@ -210,6 +214,59 @@ static void input_file(std::istream &f, std::string filename)
input_buffer.insert(it, "\n`file_pop\n");
}
static bool try_expand_macro(std::set<std::string> &defines_with_args,
std::map<std::string, std::string> &defines_map,
std::string &tok
)
{
if (tok == "`\"") {
std::string literal("\"");
// Expand string literal
while (!input_buffer.empty()) {
std::string ntok = next_token();
if (ntok == "`\"") {
insert_input(literal+"\"");
return true;
} else if (!try_expand_macro(defines_with_args, defines_map, ntok)) {
literal += ntok;
}
}
return false; // error - unmatched `"
} else if (tok.size() > 1 && tok[0] == '`' && defines_map.count(tok.substr(1)) > 0) {
std::string name = tok.substr(1);
// printf("expand: >>%s<< -> >>%s<<\n", name.c_str(), defines_map[name].c_str());
std::string skipped_spaces = skip_spaces();
tok = next_token(false);
if (tok == "(" && defines_with_args.count(name) > 0) {
int level = 1;
std::vector<std::string> args;
args.push_back(std::string());
while (1)
{
tok = next_token(true);
if (tok == ")" || tok == "}" || tok == "]")
level--;
if (level == 0)
break;
if (level == 1 && tok == ",")
args.push_back(std::string());
else
args.back() += tok;
if (tok == "(" || tok == "{" || tok == "[")
level++;
}
for (int i = 0; i < GetSize(args); i++)
defines_map[stringf("macro_%s_arg%d", name.c_str(), i+1)] = args[i];
} else {
insert_input(tok);
insert_input(skipped_spaces);
}
insert_input(defines_map[name]);
return true;
} else return false;
}
std::string frontend_verilog_preproc(std::istream &f, std::string filename, const std::map<std::string, std::string> &pre_defines_map,
dict<std::string, std::pair<std::string, bool>> &global_defines_cache, const std::list<std::string> &include_dirs)
{
@ -293,8 +350,9 @@ std::string frontend_verilog_preproc(std::istream &f, std::string filename, cons
if (tok == "`include") {
skip_spaces();
std::string fn = next_token(true);
while (fn.size() > 1 && fn[0] == '`' && defines_map.count(fn.substr(1)) > 0)
fn = defines_map.at(fn.substr(1));
while(try_expand_macro(defines_with_args, defines_map, fn)) {
fn = next_token();
}
while (1) {
size_t pos = fn.find('"');
if (pos == std::string::npos)
@ -445,39 +503,9 @@ std::string frontend_verilog_preproc(std::istream &f, std::string filename, cons
continue;
}
if (tok.size() > 1 && tok[0] == '`' && defines_map.count(tok.substr(1)) > 0) {
std::string name = tok.substr(1);
// printf("expand: >>%s<< -> >>%s<<\n", name.c_str(), defines_map[name].c_str());
std::string skipped_spaces = skip_spaces();
tok = next_token(false);
if (tok == "(" && defines_with_args.count(name) > 0) {
int level = 1;
std::vector<std::string> args;
args.push_back(std::string());
while (1)
{
tok = next_token(true);
if (tok == ")" || tok == "}" || tok == "]")
level--;
if (level == 0)
break;
if (level == 1 && tok == ",")
args.push_back(std::string());
else
args.back() += tok;
if (tok == "(" || tok == "{" || tok == "[")
level++;
}
for (int i = 0; i < GetSize(args); i++)
defines_map[stringf("macro_%s_arg%d", name.c_str(), i+1)] = args[i];
} else {
insert_input(tok);
insert_input(skipped_spaces);
}
insert_input(defines_map[name]);
if (try_expand_macro(defines_with_args, defines_map, tok))
continue;
}
output_code.push_back(tok);
}