public virtual object Perform (Context cx, IScriptable scope, IScriptable thisObj, object [] args, RegExpActions actionType)
{
GlobData data = new GlobData ();
data.mode = actionType;
switch ( (RegExpActions)actionType) {
case EcmaScript.NET.RegExpActions.Match: {
object rval;
data.optarg = 1;
rval = matchOrReplace (cx, scope, thisObj, args, this, data, false);
return data.arrayobj == null ? rval : data.arrayobj;
}
case EcmaScript.NET.RegExpActions.Search:
data.optarg = 1;
return matchOrReplace (cx, scope, thisObj, args, this, data, false);
case EcmaScript.NET.RegExpActions.Replace: {
object arg1 = args.Length < 2 ? Undefined.Value : args [1];
string repstr = null;
IFunction lambda = null;
if (arg1 is IFunction) {
lambda = (IFunction)arg1;
}
else {
repstr = ScriptConvert.ToString (arg1);
}
data.optarg = 2;
data.lambda = lambda;
data.repstr = repstr;
data.dollar = repstr == null ? -1 : repstr.IndexOf ((char)'$');
data.charBuf = null;
data.leftIndex = 0;
object val = matchOrReplace (cx, scope, thisObj, args, this, data, true);
SubString rc = this.rightContext;
if (data.charBuf == null) {
if (data.global || val == null || !val.Equals (true)) {
/* Didn't match even once. */
return data.str;
}
SubString lc = this.leftContext;
replace_glob (data, cx, scope, this, lc.index, lc.length);
}
data.charBuf.Append (rc.charArray, rc.index, rc.length);
return data.charBuf.ToString ();
}
default:
throw Context.CodeBug ();
}
}
/*
* Analog of match_glob() in jsstr.c
*/
private static void match_glob(GlobData mdata, Context cx, IScriptable scope, int count, RegExpImpl reImpl)
{
if (mdata.arrayobj == null)
{
IScriptable s = ScriptableObject.GetTopLevelScope(scope);
mdata.arrayobj = ScriptRuntime.NewObject(cx, s, "Array", null);
}
SubString matchsub = reImpl.lastMatch;
string matchstr = matchsub.ToString();
mdata.arrayobj.Put(count, mdata.arrayobj, matchstr);
}
/// <summary> Analog of do_replace in jsstr.c</summary>
private static void do_replace(GlobData rdata, Context cx, RegExpImpl regExpImpl)
{
System.Text.StringBuilder charBuf = rdata.charBuf;
int cp = 0;
string da = rdata.repstr;
int dp = rdata.dollar;
if (dp != -1)
{
int [] skip = new int [1];
do
{
int len = dp - cp;
charBuf.Append(da.Substring(cp, (dp) - (cp)));
cp = dp;
SubString sub = interpretDollar(cx, regExpImpl, da, dp, skip);
if (sub != null)
{
len = sub.length;
if (len > 0)
{
charBuf.Append(sub.charArray, sub.index, len);
}
cp += skip [0];
dp += skip [0];
}
else
{
++dp;
}
dp = da.IndexOf((char)'$', dp);
}while (dp >= 0);
}
int daL = da.Length;
if (daL > cp)
{
charBuf.Append(da.Substring(cp, (daL) - (cp)));
}
}
/// <summary> Analog of C match_or_replace.</summary>
private static object matchOrReplace (Context cx, IScriptable scope, IScriptable thisObj, object [] args, RegExpImpl reImpl, GlobData data, bool forceFlat)
{
BuiltinRegExp re;
string str = ScriptConvert.ToString (thisObj);
data.str = str;
IScriptable topScope = ScriptableObject.GetTopLevelScope (scope);
if (args.Length == 0) {
object compiled = BuiltinRegExp.compileRE ("", "", false);
re = new BuiltinRegExp (topScope, compiled);
}
else if (args [0] is BuiltinRegExp) {
re = (BuiltinRegExp)args [0];
}
else {
string src = ScriptConvert.ToString (args [0]);
string opt;
if (data.optarg < args.Length) {
args [0] = src;
opt = ScriptConvert.ToString (args [data.optarg]);
}
else {
opt = null;
}
object compiled = BuiltinRegExp.compileRE (src, opt, forceFlat);
re = new BuiltinRegExp (topScope, compiled);
}
data.regexp = re;
data.global = (re.Flags & BuiltinRegExp.JSREG_GLOB) != 0;
int [] indexp = new int [] { 0 };
object result = null;
if (data.mode == EcmaScript.NET.RegExpActions.Search) {
result = re.executeRegExp (cx, scope, reImpl, str, indexp, BuiltinRegExp.TEST);
if (result != null && result.Equals (true))
result = (int)reImpl.leftContext.length;
else
result = -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, BuiltinRegExp.TEST);
if (result == null || !result.Equals (true))
break;
if (data.mode == EcmaScript.NET.RegExpActions.Match) {
match_glob (data, cx, scope, count, reImpl);
}
else {
if (data.mode != EcmaScript.NET.RegExpActions.Replace)
Context.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 == EcmaScript.NET.RegExpActions.Replace) ? BuiltinRegExp.TEST : BuiltinRegExp.MATCH));
}
return result;
}
/// <summary> Analog of do_replace in jsstr.c</summary>
private static void do_replace (GlobData rdata, Context cx, RegExpImpl regExpImpl)
{
System.Text.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 (da.Substring (cp, (dp) - (cp)));
cp = dp;
SubString sub = interpretDollar (cx, regExpImpl, da, dp, skip);
if (sub != null) {
len = sub.length;
if (len > 0) {
charBuf.Append (sub.charArray, sub.index, len);
}
cp += skip [0];
dp += skip [0];
}
else {
++dp;
}
dp = da.IndexOf ((char)'$', dp);
}
while (dp >= 0);
}
int daL = da.Length;
if (daL > cp) {
charBuf.Append (da.Substring (cp, (daL) - (cp)));
}
}
/*
* Analog of replace_glob() in jsstr.c
*/
private static void replace_glob (GlobData rdata, Context cx, IScriptable scope, RegExpImpl reImpl, int leftIndex, int leftlen)
{
int replen;
string lambdaStr;
if (rdata.lambda != null) {
// invoke lambda function with args lastMatch, $1, $2, ... $n,
// leftContext.length, whole string.
SubString [] parens = reImpl.parens;
int parenCount = (parens == null) ? 0 : parens.Length;
object [] args = new object [parenCount + 3];
args [0] = reImpl.lastMatch.ToString ();
for (int i = 0; i < parenCount; i++) {
SubString sub = parens [i];
if (sub != null) {
args [i + 1] = sub.ToString ();
}
else {
args [i + 1] = Undefined.Value;
}
}
args [parenCount + 1] = (int)reImpl.leftContext.length;
args [parenCount + 2] = rdata.str;
// This is a hack to prevent expose of reImpl data to
// JS function which can run new regexps modifing
// regexp that are used later by the engine.
// TODO: redesign is necessary
if (reImpl != cx.RegExpProxy)
Context.CodeBug ();
RegExpImpl re2 = new RegExpImpl ();
re2.multiline = reImpl.multiline;
re2.input = reImpl.input;
cx.RegExpProxy = re2;
try {
IScriptable parent = ScriptableObject.GetTopLevelScope (scope);
object result = rdata.lambda.Call (cx, parent, parent, args);
lambdaStr = ScriptConvert.ToString (result);
}
finally {
cx.RegExpProxy = reImpl;
}
replen = lambdaStr.Length;
}
else {
lambdaStr = null;
replen = rdata.repstr.Length;
if (rdata.dollar >= 0) {
int [] skip = new int [1];
int dp = rdata.dollar;
do {
SubString sub = interpretDollar (cx, reImpl, rdata.repstr, dp, skip);
if (sub != null) {
replen += sub.length - skip [0];
dp += skip [0];
}
else {
++dp;
}
dp = rdata.repstr.IndexOf ((char)'$', dp);
}
while (dp >= 0);
}
}
int growth = leftlen + replen + reImpl.rightContext.length;
System.Text.StringBuilder charBuf = rdata.charBuf;
if (charBuf == null) {
charBuf = new System.Text.StringBuilder (growth);
rdata.charBuf = charBuf;
}
else {
charBuf.EnsureCapacity (rdata.charBuf.Length + growth);
}
charBuf.Append (reImpl.leftContext.charArray, leftIndex, leftlen);
if (rdata.lambda != null) {
charBuf.Append (lambdaStr);
}
else {
do_replace (rdata, cx, reImpl);
}
}
/*
* Analog of match_glob() in jsstr.c
*/
private static void match_glob (GlobData mdata, Context cx, IScriptable scope, int count, RegExpImpl reImpl)
{
if (mdata.arrayobj == null) {
IScriptable s = ScriptableObject.GetTopLevelScope (scope);
mdata.arrayobj = ScriptRuntime.NewObject (cx, s, "Array", null);
}
SubString matchsub = reImpl.lastMatch;
string matchstr = matchsub.ToString ();
mdata.arrayobj.Put (count, mdata.arrayobj, matchstr);
}
public virtual object Perform(Context cx, IScriptable scope, IScriptable thisObj, object [] args, RegExpActions actionType)
{
GlobData data = new GlobData();
data.mode = actionType;
switch ((RegExpActions)actionType)
{
case EcmaScript.NET.RegExpActions.Match: {
object rval;
data.optarg = 1;
rval = matchOrReplace(cx, scope, thisObj, args, this, data, false);
return(data.arrayobj == null ? rval : data.arrayobj);
}
case EcmaScript.NET.RegExpActions.Search:
data.optarg = 1;
return(matchOrReplace(cx, scope, thisObj, args, this, data, false));
case EcmaScript.NET.RegExpActions.Replace: {
object arg1 = args.Length < 2 ? Undefined.Value : args [1];
string repstr = null;
IFunction lambda = null;
if (arg1 is IFunction)
{
lambda = (IFunction)arg1;
}
else
{
repstr = ScriptConvert.ToString(arg1);
}
data.optarg = 2;
data.lambda = lambda;
data.repstr = repstr;
data.dollar = repstr == null ? -1 : repstr.IndexOf((char)'$');
data.charBuf = null;
data.leftIndex = 0;
object val = matchOrReplace(cx, scope, thisObj, args, this, data, true);
SubString rc = this.rightContext;
if (data.charBuf == null)
{
if (data.global || val == null || !val.Equals(true))
{
/* Didn't match even once. */
return(data.str);
}
SubString lc = this.leftContext;
replace_glob(data, cx, scope, this, lc.index, lc.length);
}
data.charBuf.Append(rc.charArray, rc.index, rc.length);
return(data.charBuf.ToString());
}
default:
throw Context.CodeBug();
}
}
/*
* Analog of replace_glob() in jsstr.c
*/
private static void replace_glob(GlobData rdata, Context cx, IScriptable scope, RegExpImpl reImpl, int leftIndex, int leftlen)
{
int replen;
string lambdaStr;
if (rdata.lambda != null)
{
// invoke lambda function with args lastMatch, $1, $2, ... $n,
// leftContext.length, whole string.
SubString [] parens = reImpl.parens;
int parenCount = (parens == null) ? 0 : parens.Length;
object [] args = new object [parenCount + 3];
args [0] = reImpl.lastMatch.ToString();
for (int i = 0; i < parenCount; i++)
{
SubString sub = parens [i];
if (sub != null)
{
args [i + 1] = sub.ToString();
}
else
{
args [i + 1] = Undefined.Value;
}
}
args [parenCount + 1] = (int)reImpl.leftContext.length;
args [parenCount + 2] = rdata.str;
// This is a hack to prevent expose of reImpl data to
// JS function which can run new regexps modifing
// regexp that are used later by the engine.
// TODO: redesign is necessary
if (reImpl != cx.RegExpProxy)
{
Context.CodeBug();
}
RegExpImpl re2 = new RegExpImpl();
re2.multiline = reImpl.multiline;
re2.input = reImpl.input;
cx.RegExpProxy = re2;
try {
IScriptable parent = ScriptableObject.GetTopLevelScope(scope);
object result = rdata.lambda.Call(cx, parent, parent, args);
lambdaStr = ScriptConvert.ToString(result);
}
finally {
cx.RegExpProxy = reImpl;
}
replen = lambdaStr.Length;
}
else
{
lambdaStr = null;
replen = rdata.repstr.Length;
if (rdata.dollar >= 0)
{
int [] skip = new int [1];
int dp = rdata.dollar;
do
{
SubString sub = interpretDollar(cx, reImpl, rdata.repstr, dp, skip);
if (sub != null)
{
replen += sub.length - skip [0];
dp += skip [0];
}
else
{
++dp;
}
dp = rdata.repstr.IndexOf((char)'$', dp);
}while (dp >= 0);
}
}
int growth = leftlen + replen + reImpl.rightContext.length;
System.Text.StringBuilder charBuf = rdata.charBuf;
if (charBuf == null)
{
charBuf = new System.Text.StringBuilder(growth);
rdata.charBuf = charBuf;
}
else
{
charBuf.EnsureCapacity(rdata.charBuf.Length + growth);
}
charBuf.Append(reImpl.leftContext.charArray, leftIndex, leftlen);
if (rdata.lambda != null)
{
charBuf.Append(lambdaStr);
}
else
{
do_replace(rdata, cx, reImpl);
}
}
/// <summary> Analog of C match_or_replace.</summary>
private static object matchOrReplace(Context cx, IScriptable scope, IScriptable thisObj, object [] args, RegExpImpl reImpl, GlobData data, bool forceFlat)
{
BuiltinRegExp re;
string str = ScriptConvert.ToString(thisObj);
data.str = str;
IScriptable topScope = ScriptableObject.GetTopLevelScope(scope);
if (args.Length == 0)
{
object compiled = BuiltinRegExp.compileRE("", "", false);
re = new BuiltinRegExp(topScope, compiled);
}
else if (args [0] is BuiltinRegExp)
{
re = (BuiltinRegExp)args [0];
}
else
{
string src = ScriptConvert.ToString(args [0]);
string opt;
if (data.optarg < args.Length)
{
args [0] = src;
opt = ScriptConvert.ToString(args [data.optarg]);
}
else
{
opt = null;
}
object compiled = BuiltinRegExp.compileRE(src, opt, forceFlat);
re = new BuiltinRegExp(topScope, compiled);
}
data.regexp = re;
data.global = (re.Flags & BuiltinRegExp.JSREG_GLOB) != 0;
int [] indexp = new int [] { 0 };
object result = null;
if (data.mode == EcmaScript.NET.RegExpActions.Search)
{
result = re.executeRegExp(cx, scope, reImpl, str, indexp, BuiltinRegExp.TEST);
if (result != null && result.Equals(true))
{
result = (int)reImpl.leftContext.length;
}
else
{
result = -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, BuiltinRegExp.TEST);
if (result == null || !result.Equals(true))
{
break;
}
if (data.mode == EcmaScript.NET.RegExpActions.Match)
{
match_glob(data, cx, scope, count, reImpl);
}
else
{
if (data.mode != EcmaScript.NET.RegExpActions.Replace)
{
Context.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 == EcmaScript.NET.RegExpActions.Replace) ? BuiltinRegExp.TEST : BuiltinRegExp.MATCH));
}
return(result);
}
