public virtual void InitFromContext(Context cx)
{
SetErrorReporter(cx.GetErrorReporter());
languageVersion = cx.GetLanguageVersion();
generateDebugInfo = (!cx.IsGeneratingDebugChanged() || cx.IsGeneratingDebug());
reservedKeywordAsIdentifier = cx.HasFeature(Context.FEATURE_RESERVED_KEYWORD_AS_IDENTIFIER);
allowMemberExprAsFunctionName = cx.HasFeature(Context.FEATURE_MEMBER_EXPR_AS_FUNCTION_NAME);
strictMode = cx.HasFeature(Context.FEATURE_STRICT_MODE);
warningAsError = cx.HasFeature(Context.FEATURE_WARNING_AS_ERROR);
xmlAvailable = cx.HasFeature(Context.FEATURE_E4X);
optimizationLevel = cx.GetOptimizationLevel();
generatingSource = cx.IsGeneratingSource();
activationNames = cx.activationNames;
// Observer code generation in compiled code :
generateObserverCount = cx.generateObserverCount;
}
internal static void CheckDeprecated(Context cx, string name)
{
int version = cx.GetLanguageVersion();
if (version >= Context.VERSION_1_4 || version == Context.VERSION_DEFAULT)
{
string msg = GetMessage1("msg.deprec.ctor", name);
if (version == Context.VERSION_DEFAULT)
{
Context.ReportWarning(msg);
}
else
{
throw Context.ReportRuntimeError(msg);
}
}
}
/// <summary>Get and set the language version.</summary>
/// <remarks>
/// Get and set the language version.
/// This method is defined as a JavaScript function.
/// </remarks>
public static double Version(Context cx, Scriptable thisObj, object[] args, Function funObj)
{
double result = cx.GetLanguageVersion();
if (args.Length > 0)
{
double d = Context.ToNumber(args[0]);
cx.SetLanguageVersion((int)d);
}
return result;
}
public virtual object Js_split(Context cx, Scriptable scope, string target, object[] args)
{
// create an empty Array to return;
Scriptable result = cx.NewArray(scope, 0);
// return an array consisting of the target if no separator given
// don't check against undefined, because we want
// 'fooundefinedbar'.split(void 0) to split to ['foo', 'bar']
if (args.Length < 1)
{
result.Put(0, result, target);
return result;
}
// Use the second argument as the split limit, if given.
bool limited = (args.Length > 1) && (args[1] != Undefined.instance);
long limit = 0;
// Initialize to avoid warning.
if (limited)
{
limit = ScriptRuntime.ToUint32(args[1]);
if (limit > target.Length)
{
limit = 1 + target.Length;
}
}
string separator = null;
int[] matchlen = new int[1];
Scriptable re = null;
RegExpProxy reProxy = null;
if (args[0] is Scriptable)
{
reProxy = ScriptRuntime.GetRegExpProxy(cx);
if (reProxy != null)
{
Scriptable test = (Scriptable)args[0];
if (reProxy.IsRegExp(test))
{
re = test;
}
}
}
if (re == null)
{
separator = ScriptRuntime.ToString(args[0]);
matchlen[0] = separator.Length;
}
// split target with separator or re
int[] ip = new int[] { 0 };
int match;
int len = 0;
bool[] matched = new bool[] { false };
string[][] parens = new string[][] { null };
int version = cx.GetLanguageVersion();
while ((match = Find_split(cx, scope, target, separator, version, reProxy, re, ip, matchlen, matched, parens)) >= 0)
{
if ((limited && len >= limit) || (match > target.Length))
{
break;
}
string substr;
if (target.Length == 0)
{
substr = target;
}
else
{
substr = Sharpen.Runtime.Substring(target, ip[0], match);
}
result.Put(len, result, substr);
len++;
if (re != null && matched[0] == true)
{
int size = parens[0].Length;
for (int num = 0; num < size; num++)
{
if (limited && len >= limit)
{
break;
}
result.Put(len, result, parens[0][num]);
len++;
}
matched[0] = false;
}
ip[0] = match + matchlen[0];
if (version < Context.VERSION_1_3 && version != Context.VERSION_DEFAULT)
{
if (!limited && ip[0] == target.Length)
{
break;
}
}
}
return result;
}
private static SubString InterpretDollar(Context cx, RegExpImpl res, string da, int dp, int[] skip)
{
char dc;
int num;
int tmp;
if (da[dp] != '$')
{
Kit.CodeBug();
}
int version = cx.GetLanguageVersion();
if (version != Context.VERSION_DEFAULT && version <= Context.VERSION_1_4)
{
if (dp > 0 && da[dp - 1] == '\\')
{
return null;
}
}
int daL = da.Length;
if (dp + 1 >= daL)
{
return null;
}
dc = da[dp + 1];
if (NativeRegExp.IsDigit(dc))
{
int cp;
if (version != Context.VERSION_DEFAULT && version <= Context.VERSION_1_4)
{
if (dc == '0')
{
return null;
}
num = 0;
cp = dp;
while (++cp < daL && NativeRegExp.IsDigit(dc = da[cp]))
{
tmp = 10 * num + (dc - '0');
if (tmp < num)
{
break;
}
num = tmp;
}
}
else
{
int parenCount = (res.parens == null) ? 0 : res.parens.Length;
num = dc - '0';
if (num > parenCount)
{
return null;
}
cp = dp + 2;
if ((dp + 2) < daL)
{
dc = da[dp + 2];
if (NativeRegExp.IsDigit(dc))
{
tmp = 10 * num + (dc - '0');
if (tmp <= parenCount)
{
cp++;
num = tmp;
}
}
}
if (num == 0)
{
return null;
}
}
num--;
skip[0] = cp - dp;
return res.GetParenSubString(num);
}
skip[0] = 2;
switch (dc)
{
case '$':
{
return new SubString("$");
}
case '&':
{
return res.lastMatch;
}
case '+':
{
return res.lastParen;
}
case '`':
{
if (version == Context.VERSION_1_2)
{
res.leftContext.index = 0;
res.leftContext.length = res.lastMatch.index;
}
return res.leftContext;
}
case '\'':
{
return res.rightContext;
}
}
return null;
}
public virtual int Find_split(Context cx, Scriptable scope, string target, string separator, Scriptable reObj, int[] ip, int[] matchlen, bool[] matched, string[][] parensp)
{
int i = ip[0];
int length = target.Length;
int result;
int version = cx.GetLanguageVersion();
NativeRegExp re = (NativeRegExp)reObj;
while (true)
{
// imitating C label
int ipsave = ip[0];
// reuse ip to save object creation
ip[0] = i;
object ret = re.ExecuteRegExp(cx, scope, this, target, ip, NativeRegExp.TEST);
if (ret != true)
{
// Mismatch: ensure our caller advances i past end of string.
ip[0] = ipsave;
matchlen[0] = 1;
matched[0] = false;
return length;
}
i = ip[0];
ip[0] = ipsave;
matched[0] = true;
SubString sep = this.lastMatch;
matchlen[0] = sep.length;
if (matchlen[0] == 0)
{
if (i == ip[0])
{
if (i == length)
{
if (version == Context.VERSION_1_2)
{
matchlen[0] = 1;
result = i;
}
else
{
result = -1;
}
break;
}
i++;
goto again_continue;
}
}
// imitating C goto
// PR_ASSERT((size_t)i >= sep->length);
result = i - matchlen[0];
break;
again_continue: ;
}
again_break: ;
int size = (parens == null) ? 0 : parens.Length;
parensp[0] = new string[size];
for (int num = 0; num < size; num++)
{
SubString parsub = GetParenSubString(num);
parensp[0][num] = parsub.ToString();
}
return result;
}
private static object JsConstructor(Context cx, Scriptable scope, object[] args)
{
int arglen = args.Length;
StringBuilder sourceBuf = new StringBuilder();
sourceBuf.Append("function ");
if (cx.GetLanguageVersion() != Context.VERSION_1_2)
{
sourceBuf.Append("anonymous");
}
sourceBuf.Append('(');
// Append arguments as coma separated strings
for (int i = 0; i < arglen - 1; i++)
{
if (i > 0)
{
sourceBuf.Append(',');
}
sourceBuf.Append(ScriptRuntime.ToString(args[i]));
}
sourceBuf.Append(") {");
if (arglen != 0)
{
// append function body
string funBody = ScriptRuntime.ToString(args[arglen - 1]);
sourceBuf.Append(funBody);
}
sourceBuf.Append("\n}");
string source = sourceBuf.ToString();
int[] linep = new int[1];
string filename = Context.GetSourcePositionFromStack(linep);
if (filename == null)
{
filename = "<eval'ed string>";
linep[0] = 1;
}
string sourceURI = ScriptRuntime.MakeUrlForGeneratedScript(false, filename, linep[0]);
Scriptable global = ScriptableObject.GetTopLevelScope(scope);
ErrorReporter reporter;
reporter = DefaultErrorReporter.ForEval(cx.GetErrorReporter());
Evaluator evaluator = Context.CreateInterpreter();
if (evaluator == null)
{
throw new JavaScriptException("Interpreter not present", filename, linep[0]);
}
// Compile with explicit interpreter instance to force interpreter
// mode.
return cx.CompileFunction(global, source, evaluator, reporter, sourceURI, 1, null);
}
internal virtual object ExecuteRegExp(Context cx, Scriptable scope, RegExpImpl res, string str, int[] indexp, int matchType)
{
REGlobalData gData = new REGlobalData();
int start = indexp[0];
int end = str.Length;
if (start > end)
{
start = end;
}
//
// Call the recursive matcher to do the real work.
//
bool matches = MatchRegExp(gData, re, str, start, end, res.multiline);
if (!matches)
{
if (matchType != PREFIX)
{
return null;
}
return Undefined.instance;
}
int index = gData.cp;
int ep = indexp[0] = index;
int matchlen = ep - (start + gData.skipped);
index -= matchlen;
object result;
Scriptable obj;
if (matchType == TEST)
{
result = true;
obj = null;
}
else
{
result = cx.NewArray(scope, 0);
obj = (Scriptable)result;
string matchstr = Sharpen.Runtime.Substring(str, index, index + matchlen);
obj.Put(0, obj, matchstr);
}
if (re.parenCount == 0)
{
res.parens = null;
res.lastParen = SubString.emptySubString;
}
else
{
SubString parsub = null;
int num;
res.parens = new SubString[re.parenCount];
for (num = 0; num < re.parenCount; num++)
{
int cap_index = gData.ParensIndex(num);
string parstr;
if (cap_index != -1)
{
int cap_length = gData.ParensLength(num);
parsub = new SubString(str, cap_index, cap_length);
res.parens[num] = parsub;
if (matchType != TEST)
{
obj.Put(num + 1, obj, parsub.ToString());
}
}
else
{
if (matchType != TEST)
{
obj.Put(num + 1, obj, Undefined.instance);
}
}
}
res.lastParen = parsub;
}
if (!(matchType == TEST))
{
obj.Put("index", obj, Sharpen.Extensions.ValueOf(start + gData.skipped));
obj.Put("input", obj, str);
}
if (res.lastMatch == null)
{
res.lastMatch = new SubString();
res.leftContext = new SubString();
res.rightContext = new SubString();
}
res.lastMatch.str = str;
res.lastMatch.index = index;
res.lastMatch.length = matchlen;
res.leftContext.str = str;
if (cx.GetLanguageVersion() == Context.VERSION_1_2)
{
res.leftContext.index = start;
res.leftContext.length = gData.skipped;
}
else
{
res.leftContext.index = 0;
res.leftContext.length = start + gData.skipped;
}
res.rightContext.str = str;
res.rightContext.index = ep;
res.rightContext.length = end - ep;
return result;
}
private static CharSequence Js_substring(Context cx, CharSequence target, object[] args)
{
int length = target.Length;
double start = ScriptRuntime.ToInteger(args, 0);
double end;
if (start < 0)
{
start = 0;
}
else
{
if (start > length)
{
start = length;
}
}
if (args.Length <= 1 || args[1] == Undefined.instance)
{
end = length;
}
else
{
end = ScriptRuntime.ToInteger(args[1]);
if (end < 0)
{
end = 0;
}
else
{
if (end > length)
{
end = length;
}
}
// swap if end < start
if (end < start)
{
if (cx.GetLanguageVersion() != Context.VERSION_1_2)
{
double temp = start;
start = end;
end = temp;
}
else
{
// Emulate old JDK1.0 java.lang.String.substring()
end = start;
}
}
}
return target.SubSequence((int)start, (int)end);
}
