Expression reboot

- Implemented A3::is_tag.
- Removed obsolte A3::extract_* code.
This commit is contained in:
Paul Beckingham 2011-07-24 14:46:22 -04:00
parent b3a73f2da1
commit b30b187b4c
2 changed files with 72 additions and 304 deletions

View file

@ -627,98 +627,104 @@ const A3 A3::tokenize (const A3& input) const
int i;
double d;
time_t t;
std::cout << "# " << n.dump () << "\n";
// std::cout << "# " << n.dump () << "\n";
while (! n.depleted ())
{
if (n.getQuoted ('"', s, true) ||
n.getQuoted ('\'', s, true))
{
std::cout << "# string '" << s << "'\n";
// std::cout << "# string '" << s << "'\n";
output.push_back (Arg (s, "string"));
}
else if (is_subst (n, s))
{
std::cout << "# subst '" << s << "'\n";
// std::cout << "# subst '" << s << "'\n";
output.push_back (Arg (s, "subst"));
}
else if (is_pattern (n, s))
{
std::cout << "# pattern '" << s << "'\n";
// std::cout << "# pattern '" << s << "'\n";
output.push_back (Arg (s, "pattern"));
}
else if (is_tag (n, s))
{
// std::cout << "# tag '" << s << "'\n";
output.push_back (Arg (s, "tag"));
}
else if (n.getOneOf (operators, s))
{
std::cout << "# operator '" << s << "'\n";
// std::cout << "# operator '" << s << "'\n";
output.push_back (Arg (s, "op"));
}
else if (is_attr (n, s))
{
std::cout << "# attr '" << s << "'\n";
// std::cout << "# attr '" << s << "'\n";
output.push_back (Arg (s, "attr"));
}
else if (is_attmod (n, s))
{
std::cout << "# attmod '" << s << "'\n";
// std::cout << "# attmod '" << s << "'\n";
output.push_back (Arg (s, "attmod"));
}
else if (is_dom (n, s))
{
std::cout << "# dom '" << s << "'\n";
// std::cout << "# dom '" << s << "'\n";
output.push_back (Arg (s, "dom"));
}
else if (n.getDateISO (t))
{
std::cout << "# date '" << t << "'\n";
// std::cout << "# date '" << t << "'\n";
output.push_back (Arg (Date (t).toISO (), "date"));
}
else if (n.getDate (date_format, t))
{
std::cout << "# date '" << t << "'\n";
// std::cout << "# date '" << t << "'\n";
output.push_back (Arg (Date (t).toString (date_format), "date"));
}
else if (is_duration (n, s))
{
std::cout << "# duration '" << s << "'\n";
// std::cout << "# duration '" << s << "'\n";
output.push_back (Arg (s, "duration"));
}
else if (is_id (n, s))
{
std::cout << "# id '" << s << "'\n";
// std::cout << "# id '" << s << "'\n";
output.push_back (Arg (s, "id"));
}
else if (is_uuid (n, s))
{
std::cout << "# uuid '" << s << "'\n";
// std::cout << "# uuid '" << s << "'\n";
output.push_back (Arg (s, "uuid"));
}
else if (n.getNumber (d))
{
std::cout << "# num '" << d << "'\n";
// std::cout << "# num '" << d << "'\n";
output.push_back (Arg (format (d), "num"));
}
else if (n.getInt (i))
{
std::cout << "# int '" << i << "'\n";
// std::cout << "# int '" << i << "'\n";
output.push_back (Arg (format (i), "int"));
}
else if (n.getName (s) ||
n.getWord (s)) // After DOM
{
std::cout << "# word '" << s << "'\n";
// std::cout << "# word '" << s << "'\n";
output.push_back (Arg (s, "word"));
}
@ -727,13 +733,13 @@ const A3 A3::tokenize (const A3& input) const
if (! n.getUntilWS (s))
n.getUntilEOS (s);
std::cout << "# word '" << s << "'\n";
// std::cout << "# word '" << s << "'\n";
output.push_back (Arg (s, "word"));
}
std::cout << "# " << n.dump () << "\n";
// std::cout << "# " << n.dump () << "\n";
n.skipWS ();
std::cout << "# " << n.dump () << "\n";
// std::cout << "# " << n.dump () << "\n";
}
return output;
@ -1033,29 +1039,6 @@ bool A3::is_subst (Nibbler& n, std::string& result)
return false;
}
////////////////////////////////////////////////////////////////////////////////
// <uuid>[,...]
bool A3::is_uuid (Nibbler& n, std::string& result)
{
n.save ();
result = "";
std::string uuid;
if (n.getUUID (uuid))
{
result += uuid;
while (n.skip (',') &&
n.getUUID (uuid))
{
result += ',' + uuid;
}
return true;
}
n.restore ();
return false;
}
////////////////////////////////////////////////////////////////////////////////
// <id>[-<id>][,<id>[-<id>]]
bool A3::is_id (Nibbler& n, std::string& result)
@ -1103,6 +1086,50 @@ bool A3::is_id (Nibbler& n, std::string& result)
return false;
}
////////////////////////////////////////////////////////////////////////////////
// <uuid>[,...]
bool A3::is_uuid (Nibbler& n, std::string& result)
{
n.save ();
result = "";
std::string uuid;
if (n.getUUID (uuid))
{
result += uuid;
while (n.skip (',') &&
n.getUUID (uuid))
{
result += ',' + uuid;
}
return true;
}
n.restore ();
return false;
}
////////////////////////////////////////////////////////////////////////////////
// [+-]<tag>
bool A3::is_tag (Nibbler& n, std::string& result)
{
n.save ();
std::string indicator;
std::string name;
if (n.getN (1, indicator) &&
(indicator == "+" || indicator == "-") &&
n.getName (name) &&
name.length ())
{
result = indicator + name;
return true;
}
n.restore ();
return false;
}
@ -1117,23 +1144,6 @@ bool A3::is_id (Nibbler& n, std::string& result)
#ifdef NOPE
////////////////////////////////////////////////////////////////////////////////
// [+-]<tag>
bool A3::is_tag (const std::string& input)
{
if (input.length () > 1 &&
(input[0] == '+' ||
input[0] == '-') &&
noSpaces (input) &&
input.find ('+', 1) == std::string::npos &&
input.find ('-', 1) == std::string::npos)
{
return true;
}
return false;
}
////////////////////////////////////////////////////////////////////////////////
bool A3::is_operator (
const std::string& input,
@ -1441,243 +1451,6 @@ bool A3::extract_operator (
return true;
}
////////////////////////////////////////////////////////////////////////////////
// Almost all arguments are filters, except:
// subst
// program
// command
// rc
// override
//
// Special case: attr "limit" is ignored.
A3 A3::extract_read_only_filter ()
{
A3 filter;
std::vector <Arg>::iterator arg;
for (arg = this->begin (); arg != this->end (); ++arg)
{
// Excluded.
if (arg->_third == "program" ||
arg->_third == "command" ||
arg->_third == "rc" ||
arg->_third == "override")
{
}
// Included.
else if (arg->_third == "tag" ||
arg->_third == "pattern" ||
arg->_third == "attr" ||
arg->_third == "attmod" ||
arg->_third == "id" ||
arg->_third == "uuid" ||
arg->_third == "op" ||
arg->_third == "exp" ||
arg->_third == "word")
{
// "limit" is special - it is recognized but not included in filters.
if (arg->_first.find ("limit:") == std::string::npos)
filter.push_back (*arg);
}
// Error.
else
{
// substitution
throw std::string ("A ")
+ arg->_third
+ " '"
+ arg->_first
+ "' is not allowed in a read-only filter.";
}
}
return filter;
}
////////////////////////////////////////////////////////////////////////////////
// A write filter includes id/uuid anywhere on the command line, but any other
// filter elements must occur before the command.
//
// Special case: attr "limit" is ignored.
A3 A3::extract_write_filter ()
{
A3 filter;
bool before_command = true;
std::vector <Arg>::iterator arg;
for (arg = this->begin (); arg != this->end (); ++arg)
{
// Only use args prior to command.
if (arg->_third == "command")
before_command = false;
// Excluded.
else if (arg->_third == "program" ||
arg->_third == "rc" ||
arg->_third == "override")
{
}
// Included regardless of position.
else if (arg->_third == "id" ||
arg->_third == "uuid")
{
filter.push_back (*arg);
}
// Included if prior to command.
else if (arg->_third == "tag" ||
arg->_third == "pattern" ||
arg->_third == "attr" ||
arg->_third == "attmod" ||
arg->_third == "op" ||
arg->_third == "exp" ||
arg->_third == "word")
{
if (before_command)
{
// "limit" is special - it is recognized but not included in filters.
if (arg->_first.find ("limit:") == std::string::npos)
filter.push_back (*arg);
}
}
// Error.
else
{
if (before_command)
{
// substitution
throw std::string ("A substitution '")
+ arg->_first
+ "' is not allowed in a write command filter.";
}
}
}
return filter;
}
////////////////////////////////////////////////////////////////////////////////
A3 A3::extract_modifications (bool include_seq/* = false*/)
{
A3 modifications;
bool seen_command = false;
std::vector <Arg>::iterator arg;
for (arg = this->begin (); arg != this->end (); ++arg)
{
// Only use args after command.
if (arg->_third == "command")
{
seen_command = true;
}
// Sequence excluded regardless of location.
else if (arg->_third == "id" ||
arg->_third == "uuid")
{
if (include_seq)
modifications.push_back (Arg (arg->_first, arg->_second, "word"));
}
else if (seen_command)
{
// Excluded.
if (arg->_third == "program" ||
arg->_third == "rc" ||
arg->_third == "override")
{
}
// Included.
else if (arg->_third == "tag" ||
arg->_third == "attr" ||
arg->_third == "subst" ||
arg->_third == "op" ||
arg->_third == "exp" ||
arg->_third == "word")
{
// "limit" is special - it is recognized but not included in filters.
if (arg->_first.find ("limit:") == std::string::npos)
modifications.push_back (*arg);
}
// Error.
else
{
// Instead of errors, simply downgrade these to 'word'.
if (arg->_third == "pattern" ||
arg->_third == "attmod" ||
arg->_third == "id" ||
arg->_third == "uuid")
{
arg->_third = "word";
modifications.push_back (*arg);
}
else
throw std::string ("Error: unrecognized argument in modifications.");
}
}
}
return modifications;
}
////////////////////////////////////////////////////////////////////////////////
A3 A3::extract_simple_words ()
{
A3 filter;
std::vector <Arg>::iterator arg;
for (arg = this->begin (); arg != this->end (); ++arg)
{
// Excluded.
if (arg->_third == "program" ||
arg->_third == "command" ||
arg->_third == "rc" ||
arg->_third == "override" ||
arg->_third == "attr" ||
arg->_third == "attmod")
{
;
}
// Included.
else if (arg->_third == "tag" ||
arg->_third == "pattern" ||
arg->_third == "subst" ||
arg->_third == "id" ||
arg->_third == "uuid" ||
arg->_third == "op" ||
arg->_third == "exp" ||
arg->_third == "word")
{
// "limit" is special - it is recognized but not included in filters.
if (arg->_first.find ("limit:") == std::string::npos)
filter.push_back (*arg);
}
// Error.
else
throw std::string ("Argument '") + arg->_first + "' is not allowed "
"with this command.";
}
return filter;
}
////////////////////////////////////////////////////////////////////////////////
bool A3::valid_modifier (const std::string& modifier)
{
for (unsigned int i = 0; i < NUM_MODIFIER_NAMES; ++i)
if (modifierNames[i] == modifier)
return true;
return false;
}
#endif // NOPE
@ -1709,6 +1482,8 @@ void A3::dump (const std::string& label)
color_map["date"] = Color ("bold yellow on gray4");
color_map["dom"] = Color ("bold white on gray4");
color_map["duration"] = Color ("magenta on gray4");
color_map["id"] = Color ("white on gray4");
color_map["uuid"] = Color ("white on gray4");
// Default.
color_map["none"] = Color ("black on white");

View file

@ -115,9 +115,9 @@ public:
static bool is_subst (Nibbler&, std::string&);
static bool is_id (Nibbler&, std::string&);
static bool is_uuid (Nibbler&, std::string&);
static bool is_tag (Nibbler&, std::string&);
/*
static bool is_tag (const std::string&);
static bool is_operator (const std::string&, char&, int&, char&);
static bool is_symbol_operator (const std::string&);
@ -129,13 +129,6 @@ public:
static bool extract_uuid (const std::string&, std::vector <std::string>&);
static bool extract_tag (const std::string&, char&, std::string&);
static bool extract_operator (const std::string&, std::string&);
A3 extract_read_only_filter ();
A3 extract_write_filter ();
A3 extract_modifications (bool include_seq = false);
A3 extract_simple_words ();
static bool valid_modifier (const std::string&);
*/
void dump (const std::string&);