Expressions reboot

- Implemented A3::is_dom obsoleting Nibbler::getDOM.
- Implemented A3::is_duration.
- Implemented A3::is_pattern to replace Nibbler::getQuoted call.
- Improved A3::is_attr, A3::is_attmod.
- Obsoleted A3::is_multipart.
This commit is contained in:
Paul Beckingham 2011-07-24 13:33:20 -04:00
parent f502ee0c52
commit c39f8bd6af
2 changed files with 162 additions and 91 deletions

View file

@ -33,6 +33,7 @@
#include <Context.h>
#include <Directory.h>
#include <Date.h>
#include <Duration.h>
#include <ViewText.h>
#include <text.h>
#include <util.h>
@ -636,7 +637,7 @@ const A3 A3::tokenize (const A3& input) const
output.push_back (Arg (s, "string"));
}
else if (n.getQuoted ('/', s, true))
else if (is_pattern (n, s))
{
std::cout << "# pattern '" << s << "'\n";
output.push_back (Arg (s, "pattern"));
@ -660,7 +661,7 @@ const A3 A3::tokenize (const A3& input) const
output.push_back (Arg (s, "attmod"));
}
else if (n.getDOM (s))
else if (is_dom (n, s))
{
std::cout << "# dom '" << s << "'\n";
output.push_back (Arg (s, "dom"));
@ -678,6 +679,12 @@ const A3 A3::tokenize (const A3& input) const
output.push_back (Arg (Date (t).toString (date_format), "date"));
}
else if (is_duration (n, s))
{
std::cout << "# duration '" << s << "'\n";
output.push_back (Arg (s, "duration"));
}
else if (n.getNumber (d))
{
std::cout << "# num '" << d << "'\n";
@ -722,35 +729,31 @@ bool A3::is_attr (Nibbler& n, std::string& result)
std::string name;
std::string value;
if (n.getName (name))
// If there is a valid attribute name.
if (n.getName (name) &&
name.length () &&
is_attribute (name, name))
{
if (name.length ())
if (n.skip (':'))
{
if (n.skip (':'))
// Both quoted and unquoted Att's are accepted.
// Consider removing this for a stricter parse.
if (n.getQuoted ('"', value) ||
n.getQuoted ('\'', value) ||
n.getName (value) ||
n.getUntilEOS (value) ||
n.depleted ())
{
// Both quoted and unquoted Att's are accepted.
// Consider removing this for a stricter parse.
if (n.getQuoted ('"', value) ||
n.getQuoted ('\'', value) ||
n.getName (value) ||
n.getUntilEOS (value) ||
n.depleted ())
{
/*
TODO Eliminate anything that looks like a URL.
// Exclude certain URLs, that look like attrs.
if (value.find ('@') <= n.cursor () ||
value.find ('/') <= n.cursor ())
return false;
// TODO Reject anything that looks like a URL.
// Exclude certain URLs, that look like attrs.
if (value.find ('@') <= n.cursor () ||
value.find ('/') <= n.cursor ())
return false;
*/
// Validate and canonicalize attribute name.
if (is_attribute (name, name))
{
result = name + ':' + value;
return true;
}
}
result = name + ':' + value;
return true;
}
}
}
@ -768,16 +771,20 @@ bool A3::is_attmod (Nibbler& n, std::string& result)
std::string modifier;
std::string value;
// If there is a valid attribute name.
if (n.getName (name) &&
name.length ())
name.length () &&
is_attribute (name, name))
{
if (n.skip ('.'))
{
// Skip the negation character.
n.skip ('~');
// If there is a valid modifier name.
if (n.getName (modifier) &&
modifier.length ())
modifier.length () &&
is_modifier (modifier, modifier))
{
if (n.skip (':'))
{
@ -797,19 +804,15 @@ bool A3::is_attmod (Nibbler& n, std::string& result)
return false;
*/
// Validate and canonicalize attribute name.
if (is_attribute (name, name) &&
is_modifier (modifier, modifier))
{
result = name + '.' + modifier + ':' + value;
return true;
}
result = name + '.' + modifier + ':' + value;
return true;
}
}
}
}
}
n.restore ();
return false;
}
@ -856,9 +859,122 @@ bool A3::is_modifier (const std::string& input, std::string& canonical)
return false;
}
////////////////////////////////////////////////////////////////////////////////
// DOM references are one of the following:
//
// 1. Fixed string
// DOM::get_references
// 2. Attribute
// <attr>
// 3. Task-specific attribute
// <id>.<attr>
// <uuid>.<attr>
// 4. Configuration value
// rc.<name>
//
bool A3::is_dom (Nibbler& n, std::string& result)
{
n.save ();
std::string name;
int id;
std::string uuid;
// Fixed string reference.
std::vector <std::string> refs = context.dom.get_references ();
if (n.getOneOf (refs, result))
return true;
// Configuration.
if (n.getLiteral ("rc."))
{
result = "rc.";
while (n.getWord (name))
{
result += name;
if (n.skip ('.'))
result += '.';
}
return true;
}
n.restore ();
// <id>.<attr>
if (n.getInt (id) &&
n.skip ('.') &&
n.getName (name) &&
name.length () &&
is_attribute (name, name))
{
result = format (id) + '.' + name;
return true;
}
n.restore ();
// <uuid>.<attr>
if (n.getUUID (uuid) &&
n.skip ('.') &&
n.getName (name) &&
name.length () &&
is_attribute (name, name))
{
result = uuid + '.' + name;
return true;
}
n.restore ();
// Attribute.
if (n.getName (name) &&
name.length () &&
is_attribute (name, name))
{
result = name;
return true;
}
n.restore ();
return false;
}
////////////////////////////////////////////////////////////////////////////////
bool A3::is_duration (Nibbler& n, std::string& result)
{
n.save ();
int quantity;
std::string unit;
std::vector <std::string> units = Duration::get_units ();
if (n.getInt (quantity) &&
n.getOneOf (units, unit))
{
result = format (quantity) + unit;
return true;
}
n.restore ();
return false;
}
////////////////////////////////////////////////////////////////////////////////
// /<pattern>/
bool A3::is_pattern (Nibbler& n, std::string& result)
{
std::string pattern;
if (n.getQuoted ('/', pattern) &&
pattern.length () > 0)
{
result = '/' + pattern + '/';
return true;
}
return false;
}
@ -874,26 +990,6 @@ bool A3::is_modifier (const std::string& input, std::string& canonical)
#ifdef NOPE
////////////////////////////////////////////////////////////////////////////////
bool A3::is_multipart (
const std::string& input,
std::vector <std::string>& parts)
{
parts.clear ();
Nibbler n (input);
std::string part;
while (n.getQuoted ('"', part) ||
n.getQuoted ('\'', part) ||
// n.getQuoted ('/', part) || <--- this line breaks subst.
n.getUntilWS (part))
{
n.skipWS ();
parts.push_back (part);
}
return parts.size () > 1 ? true : false;
}
////////////////////////////////////////////////////////////////////////////////
// /<from>/<to>/[g]
//
@ -923,23 +1019,6 @@ bool A3::is_subst (const std::string& input)
return false;
}
////////////////////////////////////////////////////////////////////////////////
// /<pattern>/
bool A3::is_pattern (const std::string& input)
{
std::string::size_type first = input.find ('/', 0);
std::string::size_type second = input.find ('/', first + 1);
std::string::size_type third = input.find ('/', second + 1);
if (first == 0 &&
second == input.length () - 1 &&
third == std::string::npos &&
second > 1)
return true;
return false;
}
////////////////////////////////////////////////////////////////////////////////
// <id>[-<id>][,<id>[-<id>]]
bool A3::is_id (const std::string& input)
@ -1629,6 +1708,10 @@ bool A3::valid_modifier (const std::string& modifier)
////////////////////////////////////////////////////////////////////////////////
void A3::dump (const std::string& label)
{
@ -1640,7 +1723,6 @@ void A3::dump (const std::string& label)
color_map["override"] = Color ("bold red on red");
color_map["terminator"] = Color ("bold yellow on yellow");
color_map["word"] = Color ("white on gray4");
color_map["none"] = Color ("black on white");
// Filter colors.
color_map["attr"] = Color ("bold red on gray4");
@ -1649,21 +1731,11 @@ void A3::dump (const std::string& label)
color_map["op"] = Color ("green on gray4");
color_map["string"] = Color ("bold yellow on gray4");
color_map["date"] = Color ("bold yellow on gray4");
/*
color_map["tag"] = Color ("green on gray2");
color_map["id"] = Color ("yellow on gray2");
color_map["uuid"] = Color ("yellow on gray2");
color_map["subst"] = Color ("bold cyan on gray2");
color_map["exp"] = Color ("bold green on gray2");
*/
// color_map["none"] = Color ("white on gray2");
// Fundamentals.
/*
color_map["lvalue"] = Color ("bold green on rgb010");
color_map["int"] = Color ("bold yellow on rgb010");
color_map["number"] = Color ("bold yellow on rgb010");
color_map["rx"] = Color ("bold red on rgb010");
*/
color_map["dom"] = Color ("bold white on gray4");
color_map["duration"] = Color ("magenta on gray4");
// Default.
color_map["none"] = Color ("black on white");
Color color_debug (context.config.get ("color.debug"));
std::stringstream out;

View file

@ -109,13 +109,12 @@ public:
static bool is_attmod (Nibbler&, std::string&);
static bool is_attribute (const std::string&, std::string&);
static bool is_modifier (const std::string&, std::string&);
static bool is_dom (Nibbler&, std::string&);
static bool is_duration (Nibbler&, std::string&);
static bool is_pattern (Nibbler&, std::string&);
/*
static bool is_multipart (const std::string&, std::vector <std::string>&);
static bool is_subst (const std::string&);
static bool is_pattern (const std::string&);
static bool is_id (const std::string&);
static bool is_uuid (const std::string&);
static bool is_tag (const std::string&);