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Added caching to filter_text script function

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git-svn-id: svn://svn.code.sf.net/p/magicseteditor/code/trunk@786 0fc631ac-6414-0410-93d0-97cfa31319b6
This commit is contained in:
twanvl
2007-12-26 17:43:17 +00:00
parent b006faaabd
commit 4405863485
1 changed files with 26 additions and 3 deletions
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src/script/functions/basic.cpp
+26 -3
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@@ -494,14 +494,37 @@ class ScriptFilterRule : public ScriptValue {
// Create a regular expression rule for filtering strings
ScriptValueP filter_rule(Context& ctx) {
intrusive_ptr<ScriptFilterRule> ret(new ScriptFilterRule);
// match
// cached?
SCRIPT_PARAM_C(String, match);
SCRIPT_PARAM_DEFAULT_N(String, _("in context"), in_context, String());
// cache
const int CACHE_SIZE = 6;
struct CacheItem{
String match, in_context;
intrusive_ptr<ScriptFilterRule> rule;
};
static CacheItem cache[CACHE_SIZE];
static int cache_pos = 0;
// find in cache?
for (int i = 0 ; i < CACHE_SIZE ; ++i) {
if (cache[i].rule && cache[i].match == match && cache[i].in_context == in_context) {
return cache[i].rule;
}
}
// add item
cache[cache_pos].match = match;
cache[cache_pos].in_context = in_context;
cache[cache_pos].rule = intrusive_ptr<ScriptFilterRule>(new ScriptFilterRule);
intrusive_ptr<ScriptFilterRule>& ret = cache[cache_pos].rule;
cache_pos = (cache_pos+1) % CACHE_SIZE;
// match
if (!ret->regex.Compile(match, wxRE_ADVANCED)) {
throw ScriptError(_("Error while compiling regular expression: '")+match+_("'"));
}
// in_context
SCRIPT_OPTIONAL_PARAM_N(String, _("in context"), in_context) {
if (!in_context.empty()) {
if (!ret->context.Compile(in_context, wxRE_ADVANCED)) {
throw ScriptError(_("Error while compiling regular expression: '")+in_context+_("'"));
}