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// license:GPL-2.0+
// copyright-holders:Couriersud
/*
* nl_parser.c
*
*/
#include "nl_parser.h"
//#undef NL_VERBOSE_OUT
//#define NL_VERBOSE_OUT(x) printf x
// ----------------------------------------------------------------------------------------
// A simple tokenizer
// ----------------------------------------------------------------------------------------
pstring ptokenizer::currentline_str()
{
char buf[300];
int bufp = 0;
const char *p = m_line_ptr;
while (*p && *p != 10)
buf[bufp++] = *p++;
buf[bufp] = 0;
return pstring(buf);
}
void ptokenizer::skipeol()
{
char c = getc();
while (c)
{
if (c == 10)
{
c = getc();
if (c != 13)
ungetc();
return;
}
c = getc();
}
}
unsigned char ptokenizer::getc()
{
if (*m_px == 10)
{
m_line++;
m_line_ptr = m_px + 1;
}
if (*m_px)
return *(m_px++);
else
return *m_px;
}
void ptokenizer::ungetc()
{
m_px--;
}
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))
{
error("Error: expected token <%s> got <%s>\n", m_tokens[token_num.id()].cstr(), tok.str().cstr());
}
}
pstring ptokenizer::get_string()
{
token_t tok = get_token();
if (!tok.is_type(STRING))
{
error("Error: expected a string, got <%s>\n", tok.str().cstr());
}
return tok.str();
}
pstring ptokenizer::get_identifier()
{
token_t tok = get_token();
if (!tok.is_type(IDENTIFIER))
{
error("Error: expected an identifier, got <%s>\n", tok.str().cstr());
}
return tok.str();
}
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 */
char c = getc();
while (m_whitespace.find(c)>=0)
{
c = getc();
if (eof())
{
return token_t(ENDOFFILE);
}
}
if (m_identifier_chars.find(c)>=0)
{
/* read identifier till non identifier char */
pstring tokstr = "";
while (m_identifier_chars.find(c)>=0) {
tokstr += c;
c = getc();
}
ungetc();
token_id_t id = token_id_t(m_tokens.indexof(tokstr));
if (id.id() >= 0)
return token_t(id, 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)) < 0 && (m_whitespace.find(c) < 0)) {
tokstr += c;
/* expensive, check for single char tokens */
if (tokstr.len() == 1)
{
token_id_t id = token_id_t(m_tokens.indexof(tokstr));
if (id.id() >= 0)
return token_t(id, tokstr);
}
c = getc();
}
ungetc();
token_id_t id = token_id_t(m_tokens.indexof(tokstr));
if (id.id() >= 0)
return token_t(id, tokstr);
else
{
return token_t(UNKNOWN, tokstr);
}
}
}
ATTR_COLD void ptokenizer::error(const char *format, ...)
{
va_list ap;
va_start(ap, format);
pstring errmsg1 =pstring(format).vprintf(ap);
va_end(ap);
verror(errmsg1, currentline_no(), currentline_str());
//throw error;
}
// ----------------------------------------------------------------------------------------
// A netlist parser
// ----------------------------------------------------------------------------------------
ATTR_COLD void netlist_parser::verror(pstring msg, int line_num, pstring line)
{
m_setup.netlist().error("line %d: error: %s\n\t\t%s\n", line_num,
msg.cstr(), line.cstr());
//throw error;
}
bool netlist_parser::parse(const char *buf, const pstring nlname)
{
m_buf = buf;
reset(buf);
set_identifier_chars("abcdefghijklmnopqrstuvwvxyzABCDEFGHIJKLMNOPQRSTUVWXYZ01234567890_.-");
set_number_chars("01234567890eE-."); //FIXME: processing of numbers
char ws[5];
ws[0] = ' ';
ws[1] = 9;
ws[2] = 10;
ws[3] = 13;
ws[4] = 0;
set_whitespace(ws);
set_comment("/*", "*/", "//");
m_tok_param_left = register_token("(");
m_tok_param_right = register_token(")");
m_tok_comma = register_token(",");
m_tok_ALIAS = register_token("ALIAS");
m_tok_NET_C = register_token("NET_C");
m_tok_PARAM = register_token("PARAM");
m_tok_NET_MODEL = register_token("NET_MODEL");
m_tok_INCLUDE = register_token("INCLUDE");
m_tok_SUBMODEL = register_token("SUBMODEL");
m_tok_NETLIST_START = register_token("NETLIST_START");
m_tok_NETLIST_END = register_token("NETLIST_END");
bool in_nl = false;
while (true)
{
token_t token = get_token();
if (token.is_type(ENDOFFILE))
{
return false;
//error("EOF while searching for <%s>", nlname.cstr());
}
if (token.is(m_tok_NETLIST_END))
{
require_token(m_tok_param_left);
if (!in_nl)
error("Unexpected NETLIST_END");
else
{
in_nl = false;
}
require_token(m_tok_param_right);
}
else if (token.is(m_tok_NETLIST_START))
{
if (in_nl)
error("Unexpected NETLIST_START");
require_token(m_tok_param_left);
token_t name = get_token();
require_token(m_tok_param_right);
if (name.str() == nlname || nlname == "")
{
parse_netlist(name.str());
return true;
} else
in_nl = true;
}
}
}
void netlist_parser::parse_netlist(const pstring &nlname)
{
while (true)
{
token_t token = get_token();
if (token.is_type(ENDOFFILE))
return;
require_token(m_tok_param_left);
NL_VERBOSE_OUT(("Parser: Device: %s\n", token.str().cstr()));
if (token.is(m_tok_ALIAS))
net_alias();
else if (token.is(m_tok_NET_C))
net_c();
else if (token.is(m_tok_PARAM))
netdev_param();
else if (token.is(m_tok_NET_MODEL))
net_model();
else if (token.is(m_tok_SUBMODEL))
net_submodel();
else if (token.is(m_tok_INCLUDE))
net_include();
else if (token.is(m_tok_NETLIST_END))
{
netdev_netlist_end();
return;
}
else
device(token.str());
}
}
void netlist_parser::netdev_netlist_start()
{
// don't do much
token_t name = get_token();
require_token(m_tok_param_right);
}
void netlist_parser::netdev_netlist_end()
{
// don't do much
require_token(m_tok_param_right);
}
void netlist_parser::net_model()
{
// don't do much
pstring model = get_string();
m_setup.register_model(model);
require_token(m_tok_param_right);
}
void netlist_parser::net_submodel()
{
// don't do much
pstring name = get_identifier();
require_token(m_tok_comma);
pstring model = get_identifier();
require_token(m_tok_param_right);
m_setup.namespace_push(name);
netlist_parser subparser(m_setup);
subparser.parse(m_buf, model);
m_setup.namespace_pop();
}
void netlist_parser::net_include()
{
// don't do much
pstring name = get_identifier();
require_token(m_tok_param_right);
netlist_parser subparser(m_setup);
subparser.parse(m_buf, name);
}
void netlist_parser::net_alias()
{
pstring alias = get_identifier();
require_token(m_tok_comma);
pstring out = get_identifier();
require_token(m_tok_param_right);
NL_VERBOSE_OUT(("Parser: Alias: %s %s\n", alias.cstr(), out.cstr()));
m_setup.register_alias(alias, out);
}
void netlist_parser::net_c()
{
pstring last = get_identifier();
require_token(m_tok_comma);
while (true)
{
pstring t1 = get_identifier();
m_setup.register_link(last , t1);
token_t n = get_token();
if (n.is(m_tok_param_right))
break;
if (!n.is(m_tok_comma))
error("expected a comma, found <%s>", n.str().cstr());
last = t1;
}
NL_VERBOSE_OUT(("Parser: Connect: %s %s\n", t1.cstr(), t2.cstr()));
}
void netlist_parser::netdev_param()
{
pstring param;
double val;
param = get_identifier();
require_token(m_tok_comma);
val = eval_param(get_token());
NL_VERBOSE_OUT(("Parser: Param: %s %f\n", param.cstr(), val));
m_setup.register_param(param, val);
require_token(m_tok_param_right);
}
void netlist_parser::device(const pstring &dev_type)
{
pstring devname;
net_device_t_base_factory *f = m_setup.factory().factory_by_name(dev_type, m_setup);
netlist_device_t *dev;
nl_util::pstring_list termlist = f->term_param_list();
nl_util::pstring_list def_params = f->def_params();
token_t tok;
int cnt;
devname = get_identifier();
dev = f->Create();
m_setup.register_dev(dev, devname);
NL_VERBOSE_OUT(("Parser: IC: %s\n", devname.cstr()));
cnt = 0;
while (cnt < def_params.count())
{
pstring paramfq = devname + "." + def_params[cnt];
NL_VERBOSE_OUT(("Defparam: %s\n", paramfq.cstr()));
require_token(m_tok_comma);
tok = get_token();
if (tok.is_type(STRING))
{
m_setup.register_param(paramfq, tok.str());
}
else
{
double val = eval_param(tok);
m_setup.register_param(paramfq, val);
}
cnt++;
}
tok = get_token();
cnt = 0;
while (tok.is(m_tok_comma) && cnt < termlist.count())
{
pstring output_name = get_identifier();
m_setup.register_link(devname + "." + termlist[cnt], output_name);
cnt++;
tok = get_token();
}
if (cnt != termlist.count())
fatalerror("netlist: input count mismatch for %s - expected %d found %d\n", devname.cstr(), termlist.count(), cnt);
require_token(tok, m_tok_param_right);
}
// ----------------------------------------------------------------------------------------
// private
// ----------------------------------------------------------------------------------------
double netlist_parser::eval_param(const token_t tok)
{
static const char *macs[6] = {"", "RES_K", "RES_M", "CAP_U", "CAP_N", "CAP_P"};
static double facs[6] = {1, 1e3, 1e6, 1e-6, 1e-9, 1e-12};
int i;
int f=0;
bool e;
double ret;
pstring val;
//printf("param %s\n", tok.m_token.cstr());
for (i=1; i<6;i++)
if (tok.str().equals(macs[i]))
f = i;
if (f>0)
{
require_token(m_tok_param_left);
val = get_identifier();
}
else
val = tok.str();
ret = val.as_double(&e);
if (e)
error("Error with parameter ...\n");
if (f>0)
require_token(m_tok_param_right);
return ret * facs[f];
}
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