diff options
Diffstat (limited to 'src/lib/netlist/plib/pparser.cpp')
-rw-r--r-- | src/lib/netlist/plib/pparser.cpp | 531 |
1 files changed, 0 insertions, 531 deletions
diff --git a/src/lib/netlist/plib/pparser.cpp b/src/lib/netlist/plib/pparser.cpp deleted file mode 100644 index 2b365f22811..00000000000 --- a/src/lib/netlist/plib/pparser.cpp +++ /dev/null @@ -1,531 +0,0 @@ -// license:GPL-2.0+ -// copyright-holders:Couriersud -/* - * pparser.c - * - */ - -#include "pparser.h" -#include "palloc.h" -#include "putil.h" - -//#include <cstdarg> - -namespace plib { -// ---------------------------------------------------------------------------------------- -// A simple tokenizer -// ---------------------------------------------------------------------------------------- - -pstring ptokenizer::currentline_str() -{ - return m_cur_line; -} - - -void ptokenizer::skipeol() -{ - pstring::value_type c = getc(); - while (c) - { - if (c == 10) - { - c = getc(); - if (c != 13) - ungetc(c); - return; - } - c = getc(); - } -} - - -pstring::value_type ptokenizer::getc() -{ - if (m_unget != 0) - { - pstring::value_type c = m_unget; - m_unget = 0; - return c; - } - if (m_px == m_cur_line.end()) - { - m_lineno++; - if (m_strm.readline(m_cur_line)) - m_px = m_cur_line.begin(); - else - return 0; - return '\n'; - } - pstring::value_type c = *(m_px++); - return c; -} - -void ptokenizer::ungetc(pstring::value_type c) -{ - m_unget = c; -} - -void ptokenizer::require_token(const token_id_t &token_num) -{ - require_token(get_token(), token_num); -} - -void ptokenizer::require_token(const token_t &tok, const token_id_t &token_num) -{ - if (!tok.is(token_num)) - { - pstring val(""); - for (auto &i : m_tokens) - if (i.second.id() == token_num.id()) - val = i.first; - error(pfmt("Expected token <{1}> got <{2}>")(val)(tok.str()) ); - } -} - -pstring ptokenizer::get_string() -{ - token_t tok = get_token(); - if (!tok.is_type(STRING)) - { - error(pfmt("Expected a string, got <{1}>")(tok.str()) ); - } - return tok.str(); -} - -pstring ptokenizer::get_identifier() -{ - token_t tok = get_token(); - if (!tok.is_type(IDENTIFIER)) - { - error(pfmt("Expected an identifier, got <{1}>")(tok.str()) ); - } - return tok.str(); -} - -pstring ptokenizer::get_identifier_or_number() -{ - token_t tok = get_token(); - if (!(tok.is_type(IDENTIFIER) || tok.is_type(NUMBER))) - { - error(pfmt("Expected an identifier or number, got <{1}>")(tok.str()) ); - } - return tok.str(); -} - -// FIXME: combine into template -double ptokenizer::get_number_double() -{ - token_t tok = get_token(); - if (!tok.is_type(NUMBER)) - { - error(pfmt("Expected a number, got <{1}>")(tok.str()) ); - } - bool err; - auto ret = plib::pstonum_ne<double, true>(tok.str(), err); - if (err) - error(pfmt("Expected a number, got <{1}>")(tok.str()) ); - return ret; -} - -long ptokenizer::get_number_long() -{ - token_t tok = get_token(); - if (!tok.is_type(NUMBER)) - { - error(pfmt("Expected a long int, got <{1}>")(tok.str()) ); - } - bool err; - auto ret = plib::pstonum_ne<long, true>(tok.str(), err); - if (err) - error(pfmt("Expected a long int, got <{1}>")(tok.str()) ); - return ret; -} - -ptokenizer::token_t ptokenizer::get_token() -{ - while (true) - { - token_t ret = get_token_internal(); - if (ret.is_type(ENDOFFILE)) - return ret; - - if (ret.is(m_tok_comment_start)) - { - do { - ret = get_token_internal(); - } while (ret.is_not(m_tok_comment_end)); - } - else if (ret.is(m_tok_line_comment)) - { - skipeol(); - } - else if (ret.str() == "#") - { - skipeol(); - } - else - { - return ret; - } - } -} - -ptokenizer::token_t ptokenizer::get_token_internal() -{ - /* skip ws */ - pstring::value_type c = getc(); - while (m_whitespace.find(c) != pstring::npos) - { - c = getc(); - if (eof()) - { - return token_t(ENDOFFILE); - } - } - if (m_number_chars_start.find(c) != pstring::npos) - { - /* read number while we receive number or identifier chars - * treat it as an identifier when there are identifier chars in it - * - */ - token_type ret = NUMBER; - pstring tokstr = ""; - while (true) { - if (m_identifier_chars.find(c) != pstring::npos && m_number_chars.find(c) == pstring::npos) - ret = IDENTIFIER; - else if (m_number_chars.find(c) == pstring::npos) - break; - tokstr += c; - c = getc(); - } - ungetc(c); - return token_t(ret, tokstr); - } - else if (m_identifier_chars.find(c) != pstring::npos) - { - /* read identifier till non identifier char */ - pstring tokstr = ""; - while (m_identifier_chars.find(c) != pstring::npos) - { - tokstr += c; - c = getc(); - } - ungetc(c); - auto id = m_tokens.find(tokstr); - if (id != m_tokens.end()) - return token_t(id->second, tokstr); - else - return token_t(IDENTIFIER, tokstr); - } - else if (c == m_string) - { - pstring tokstr = ""; - c = getc(); - while (c != m_string) - { - tokstr += c; - c = getc(); - } - return token_t(STRING, tokstr); - } - else - { - /* read identifier till first identifier char or ws */ - pstring tokstr = ""; - while ((m_identifier_chars.find(c) == pstring::npos) && (m_whitespace.find(c) == pstring::npos)) - { - tokstr += c; - /* expensive, check for single char tokens */ - if (tokstr.length() == 1) - { - auto id = m_tokens.find(tokstr); - if (id != m_tokens.end()) - return token_t(id->second, tokstr); - } - c = getc(); - } - ungetc(c); - auto id = m_tokens.find(tokstr); - if (id != m_tokens.end()) - return token_t(id->second, tokstr); - else - return token_t(UNKNOWN, tokstr); - } -} - -void ptokenizer::error(const pstring &errs) -{ - verror(errs, currentline_no(), currentline_str()); - //throw error; -} - -// ---------------------------------------------------------------------------------------- -// A simple preprocessor -// ---------------------------------------------------------------------------------------- - -ppreprocessor::ppreprocessor(defines_map_type *defines) -: std::istream(new st(this)) -, m_ifflag(0) -, m_level(0) -, m_lineno(0) -, m_pos(0) -, m_state(PROCESS) -, m_comment(false) -{ - m_expr_sep.emplace_back("!"); - m_expr_sep.emplace_back("("); - m_expr_sep.emplace_back(")"); - m_expr_sep.emplace_back("+"); - m_expr_sep.emplace_back("-"); - m_expr_sep.emplace_back("*"); - m_expr_sep.emplace_back("/"); - m_expr_sep.emplace_back("&&"); - m_expr_sep.emplace_back("||"); - m_expr_sep.emplace_back("=="); - m_expr_sep.emplace_back(","); - m_expr_sep.emplace_back(" "); - m_expr_sep.emplace_back("\t"); - - if (defines != nullptr) - m_defines = *defines; - m_defines.insert({"__PLIB_PREPROCESSOR__", define_t("__PLIB_PREPROCESSOR__", "1")}); -} - -void ppreprocessor::error(const pstring &err) -{ - throw pexception("PREPRO ERROR: " + err); -} - -#define CHECKTOK2(p_op, p_prio) \ - else if (tok == # p_op) \ - { \ - if (prio < (p_prio)) \ - return val; \ - start++; \ - const auto v2 = expr(sexpr, start, (p_prio)); \ - val = (val p_op v2); \ - } \ - -// Operator precedence see https://en.cppreference.com/w/cpp/language/operator_precedence - -int ppreprocessor::expr(const std::vector<pstring> &sexpr, std::size_t &start, int prio) -{ - int val = 0; - pstring tok=sexpr[start]; - if (tok == "(") - { - start++; - val = expr(sexpr, start, /*prio*/ 255); - if (sexpr[start] != ")") - error("parsing error!"); - start++; - } - while (start < sexpr.size()) - { - tok=sexpr[start]; - if (tok == ")") - { - // FIXME: catch error - return val; - } - else if (tok == "!") - { - if (prio < 3) - return val; - start++; - val = !expr(sexpr, start, 3); - } - CHECKTOK2(*, 5) - CHECKTOK2(/, 5) - CHECKTOK2(+, 6) - CHECKTOK2(-, 6) - CHECKTOK2(==, 10) - CHECKTOK2(&&, 14) - CHECKTOK2(||, 15) - else - { - // FIXME: error handling - val = plib::pstonum<decltype(val)>(tok); - start++; - } - } - return val; -} - -ppreprocessor::define_t *ppreprocessor::get_define(const pstring &name) -{ - auto idx = m_defines.find(name); - return (idx != m_defines.end()) ? &idx->second : nullptr; -} - -pstring ppreprocessor::replace_macros(const pstring &line) -{ - std::vector<pstring> elems(psplit(line, m_expr_sep)); - pstring ret(""); - for (auto & elem : elems) - { - define_t *def = get_define(elem); - ret += (def != nullptr) ? def->m_replace : elem; - } - return ret; -} - -static pstring catremainder(const std::vector<pstring> &elems, std::size_t start, const pstring &sep) -{ - pstring ret(""); - for (std::size_t i = start; i < elems.size(); i++) - { - ret += elems[i]; - ret += sep; - } - return ret; -} - -pstring ppreprocessor::process_comments(pstring line) -{ - bool in_string = false; - - std::size_t e = line.size(); - pstring ret = ""; - for (std::size_t i=0; i < e; ) - { - pstring c = plib::left(line, 1); - line = line.substr(1); - if (!m_comment) - { - if (c=="\"") - { - in_string = !in_string; - ret += c; - } - else if (in_string && c=="\\") - { - i++; - ret += (c + plib::left(line, 1)); - line = line.substr(1); - } - else if (!in_string && c=="/" && plib::left(line,1) == "*") - m_comment = true; - else if (!in_string && c=="/" && plib::left(line,1) == "/") - break; - else - ret += c; - } - else - if (c=="*" && plib::left(line,1) == "/") - { - i++; - line = line.substr(1); - m_comment = false; - } - i++; - } - return ret; -} - -pstring ppreprocessor::process_line(pstring line) -{ - bool line_cont = plib::right(line, 1) == "\\"; - if (line_cont) - line = plib::left(line, line.size() - 1); - - if (m_state == LINE_CONTINUATION) - m_line += line; - else - m_line = line; - - if (line_cont) - { - m_state = LINE_CONTINUATION; - return ""; - } - else - m_state = PROCESS; - - line = process_comments(m_line); - - pstring lt = plib::trim(plib::replace_all(line, pstring("\t"), pstring(" "))); - pstring ret; - // FIXME ... revise and extend macro handling - if (plib::startsWith(lt, "#")) - { - std::vector<pstring> lti(psplit(lt, " ", true)); - if (lti[0] == "#if") - { - m_level++; - std::size_t start = 0; - lt = replace_macros(lt); - std::vector<pstring> t(psplit(replace_all(lt.substr(3), pstring(" "), pstring("")), m_expr_sep)); - auto val = static_cast<int>(expr(t, start, 255)); - if (val == 0) - m_ifflag |= (1 << m_level); - } - else if (lti[0] == "#ifdef") - { - m_level++; - if (get_define(lti[1]) == nullptr) - m_ifflag |= (1 << m_level); - } - else if (lti[0] == "#ifndef") - { - m_level++; - if (get_define(lti[1]) != nullptr) - m_ifflag |= (1 << m_level); - } - else if (lti[0] == "#else") - { - m_ifflag ^= (1 << m_level); - } - else if (lti[0] == "#endif") - { - m_ifflag &= ~(1 << m_level); - m_level--; - } - else if (lti[0] == "#include") - { - // ignore - } - else if (lti[0] == "#pragma") - { - if (m_ifflag == 0 && lti.size() > 3 && lti[1] == "NETLIST") - { - if (lti[2] == "warning") - error("NETLIST: " + catremainder(lti, 3, " ")); - } - } - else if (lti[0] == "#define") - { - if (m_ifflag == 0) - { - if (lti.size() < 2) - error("PREPRO: define needs at least one argument: " + line); - else if (lti.size() == 2) - m_defines.insert({lti[1], define_t(lti[1], "")}); - else - { - pstring arg(""); - for (std::size_t i=2; i<lti.size() - 1; i++) - arg += lti[i] + " "; - arg += lti[lti.size()-1]; - m_defines.insert({lti[1], define_t(lti[1], arg)}); - } - } - } - else - { - if (m_ifflag == 0) - error(pfmt("unknown directive on line {1}: {2}")(m_lineno)(replace_macros(line))); - } - } - else - { - lt = replace_macros(lt); - if (m_ifflag == 0) - ret += lt; - } - return ret; -} - - - -} // namespace plib |