public virtual object Action(Context cx, Scriptable scope, Scriptable thisObj, object[] args, int actionType)
{
GlobData data = new GlobData();
data.mode = actionType;
switch (actionType)
{
case RegExpProxyConstants.RA_MATCH:
{
object rval;
data.optarg = 1;
rval = MatchOrReplace(cx, scope, thisObj, args, this, data, false);
return data.arrayobj == null ? rval : data.arrayobj;
}
case RegExpProxyConstants.RA_SEARCH:
{
data.optarg = 1;
return MatchOrReplace(cx, scope, thisObj, args, this, data, false);
}
case RegExpProxyConstants.RA_REPLACE:
{
object arg1 = args.Length < 2 ? Undefined.instance : args[1];
string repstr = null;
Function lambda = null;
if (arg1 is Function)
{
lambda = (Function)arg1;
}
else
{
repstr = ScriptRuntime.ToString(arg1);
}
data.optarg = 2;
data.lambda = lambda;
data.repstr = repstr;
data.dollar = repstr == null ? -1 : repstr.IndexOf('$');
data.charBuf = null;
data.leftIndex = 0;
object val = MatchOrReplace(cx, scope, thisObj, args, this, data, true);
if (data.charBuf == null)
{
if (data.global || val == null || !val.Equals(true))
{
return data.str;
}
SubString lc = this.leftContext;
Replace_glob(data, cx, scope, this, lc.index, lc.length);
}
SubString rc = this.rightContext;
data.charBuf.AppendRange(rc.str, rc.index, rc.index + rc.length);
return data.charBuf.ToString();
}
default:
{
throw Kit.CodeBug();
}
}
}
/// <summary>Analog of C match_or_replace.</summary>
/// <remarks>Analog of C match_or_replace.</remarks>
private static object MatchOrReplace(Context cx, Scriptable scope, Scriptable thisObj, object[] args, RegExpImpl reImpl, GlobData data, bool forceFlat)
{
NativeRegExp re;
string str = ScriptRuntime.ToString(thisObj);
data.str = str;
Scriptable topScope = ScriptableObject.GetTopLevelScope(scope);
if (args.Length == 0)
{
RECompiled compiled = NativeRegExp.CompileRE(cx, string.Empty, string.Empty, false);
re = new NativeRegExp(topScope, compiled);
}
else
{
if (args[0] is NativeRegExp)
{
re = (NativeRegExp)args[0];
}
else
{
string src = ScriptRuntime.ToString(args[0]);
string opt;
if (data.optarg < args.Length)
{
args[0] = src;
opt = ScriptRuntime.ToString(args[data.optarg]);
}
else
{
opt = null;
}
RECompiled compiled = NativeRegExp.CompileRE(cx, src, opt, forceFlat);
re = new NativeRegExp(topScope, compiled);
}
}
data.global = (re.GetFlags() & NativeRegExp.JSREG_GLOB) != 0;
int[] indexp = new int[] { 0 };
object result = null;
if (data.mode == RegExpProxyConstants.RA_SEARCH)
{
result = re.ExecuteRegExp(cx, scope, reImpl, str, indexp, NativeRegExp.TEST);
if (result != null && result.Equals(true))
{
result = Sharpen.Extensions.ValueOf(reImpl.leftContext.length);
}
else
{
result = Sharpen.Extensions.ValueOf(-1);
}
}
else
{
if (data.global)
{
re.lastIndex = 0;
for (int count = 0; indexp[0] <= str.Length; count++)
{
result = re.ExecuteRegExp(cx, scope, reImpl, str, indexp, NativeRegExp.TEST);
if (result == null || !result.Equals(true))
{
break;
}
if (data.mode == RegExpProxyConstants.RA_MATCH)
{
Match_glob(data, cx, scope, count, reImpl);
}
else
{
if (data.mode != RegExpProxyConstants.RA_REPLACE)
{
Kit.CodeBug();
}
SubString lastMatch = reImpl.lastMatch;
int leftIndex = data.leftIndex;
int leftlen = lastMatch.index - leftIndex;
data.leftIndex = lastMatch.index + lastMatch.length;
Replace_glob(data, cx, scope, reImpl, leftIndex, leftlen);
}
if (reImpl.lastMatch.length == 0)
{
if (indexp[0] == str.Length)
{
break;
}
indexp[0]++;
}
}
}
else
{
result = re.ExecuteRegExp(cx, scope, reImpl, str, indexp, ((data.mode == RegExpProxyConstants.RA_REPLACE) ? NativeRegExp.TEST : NativeRegExp.MATCH));
}
}
return result;
}
/// <summary>Analog of do_replace in jsstr.c</summary>
private static void Do_replace(GlobData rdata, Context cx, RegExpImpl regExpImpl)
{
StringBuilder charBuf = rdata.charBuf;
int cp = 0;
string da = rdata.repstr;
int dp = rdata.dollar;
if (dp != -1)
{
int[] skip = new int[1];
do
{
int len = dp - cp;
charBuf.Append(Sharpen.Runtime.Substring(da, cp, dp));
cp = dp;
SubString sub = InterpretDollar(cx, regExpImpl, da, dp, skip);
if (sub != null)
{
len = sub.length;
if (len > 0)
{
charBuf.AppendRange(sub.str, sub.index, sub.index + len);
}
cp += skip[0];
dp += skip[0];
}
else
{
++dp;
}
dp = da.IndexOf('$', dp);
}
while (dp >= 0);
}
int daL = da.Length;
if (daL > cp)
{
charBuf.Append(Sharpen.Runtime.Substring(da, cp, daL));
}
}
private static void Replace_glob(GlobData rdata, Context cx, Scriptable scope, RegExpImpl reImpl, int leftIndex, int leftlen)
{
int replen;
string lambdaStr;
if (rdata.lambda != null)
{
// invoke lambda function with args lastMatch, $1, $2, ... $n,
// leftContext.length, whole string.
SubString[] parens = reImpl.parens;
int parenCount = (parens == null) ? 0 : parens.Length;
object[] args = new object[parenCount + 3];
args[0] = reImpl.lastMatch.ToString();
for (int i = 0; i < parenCount; i++)
{
SubString sub = parens[i];
if (sub != null)
{
args[i + 1] = sub.ToString();
}
else
{
args[i + 1] = Undefined.instance;
}
}
args[parenCount + 1] = Sharpen.Extensions.ValueOf(reImpl.leftContext.length);
args[parenCount + 2] = rdata.str;
// This is a hack to prevent expose of reImpl data to
// JS function which can run new regexps modifing
// regexp that are used later by the engine.
// TODO: redesign is necessary
if (reImpl != ScriptRuntime.GetRegExpProxy(cx))
{
Kit.CodeBug();
}
RegExpImpl re2 = new RegExpImpl();
re2.multiline = reImpl.multiline;
re2.input = reImpl.input;
ScriptRuntime.SetRegExpProxy(cx, re2);
try
{
Scriptable parent = ScriptableObject.GetTopLevelScope(scope);
object result = rdata.lambda.Call(cx, parent, parent, args);
lambdaStr = ScriptRuntime.ToString(result);
}
finally
{
ScriptRuntime.SetRegExpProxy(cx, reImpl);
}
replen = lambdaStr.Length;
}
else
{
lambdaStr = null;
replen = rdata.repstr.Length;
if (rdata.dollar >= 0)
{
int[] skip = new int[1];
int dp = rdata.dollar;
do
{
SubString sub = InterpretDollar(cx, reImpl, rdata.repstr, dp, skip);
if (sub != null)
{
replen += sub.length - skip[0];
dp += skip[0];
}
else
{
++dp;
}
dp = rdata.repstr.IndexOf('$', dp);
}
while (dp >= 0);
}
}
int growth = leftlen + replen + reImpl.rightContext.length;
StringBuilder charBuf = rdata.charBuf;
if (charBuf == null)
{
charBuf = new StringBuilder(growth);
rdata.charBuf = charBuf;
}
else
{
charBuf.EnsureCapacity(rdata.charBuf.Length + growth);
}
charBuf.AppendRange(reImpl.leftContext.str, leftIndex, leftIndex + leftlen);
if (rdata.lambda != null)
{
charBuf.Append(lambdaStr);
}
else
{
Do_replace(rdata, cx, reImpl);
}
}
private static void Match_glob(GlobData mdata, Context cx, Scriptable scope, int count, RegExpImpl reImpl)
{
if (mdata.arrayobj == null)
{
mdata.arrayobj = cx.NewArray(scope, 0);
}
SubString matchsub = reImpl.lastMatch;
string matchstr = matchsub.ToString();
mdata.arrayobj.Put(count, mdata.arrayobj, matchstr);
}