// ECMA 15.3.2 The Function Constructor
JSObject* constructFunction(ExecState* exec, const ArgList& args, const Identifier& functionName, const UString& sourceURL, int lineNumber)
{
// Functions need to have a space following the opening { due to for web compatibility
// see https://bugs.webkit.org/show_bug.cgi?id=24350
// We also need \n before the closing } to handle // comments at the end of the last line
UString program;
if (args.isEmpty())
program = "(function() { \n})";
else if (args.size() == 1)
program = makeString("(function() { ", args.at(0).toString(exec), "\n})");
else {
StringBuilder builder;
builder.append("(function(");
builder.append(args.at(0).toString(exec));
for (size_t i = 1; i < args.size() - 1; i++) {
builder.append(",");
builder.append(args.at(i).toString(exec));
}
builder.append(") { ");
builder.append(args.at(args.size() - 1).toString(exec));
builder.append("\n})");
program = builder.build();
}
int errLine;
UString errMsg;
SourceCode source = makeSource(program, sourceURL, lineNumber);
RefPtr<FunctionExecutable> function = FunctionExecutable::fromGlobalCode(functionName, exec, exec->dynamicGlobalObject()->debugger(), source, &errLine, &errMsg);
if (!function)
return throwError(exec, SyntaxError, errMsg, errLine, source.provider()->asID(), source.provider()->url());
JSGlobalObject* globalObject = exec->lexicalGlobalObject();
ScopeChain scopeChain(globalObject, globalObject->globalData(), globalObject, exec->globalThisValue());
return new (exec) JSFunction(exec, function, scopeChain.node());
}
UString FunctionExecutable::paramString() const
{
FunctionParameters& parameters = *m_parameters;
StringBuilder builder;
for (size_t pos = 0; pos < parameters.size(); ++pos) {
if (!builder.isEmpty())
builder.append(", ");
builder.append(parameters[pos].ustring());
}
return builder.build();
}
// "inline" is required here to help WINSCW compiler resolve specialized argument in templated functions.
template <LiteralParser::ParserMode mode> inline LiteralParser::TokenType LiteralParser::Lexer::lexString(LiteralParserToken& token)
{
++m_ptr;
const UChar* runStart;
StringBuilder builder;
do {
runStart = m_ptr;
while (m_ptr < m_end && isSafeStringCharacter<mode>(*m_ptr))
++m_ptr;
if (runStart < m_ptr)
builder.append(runStart, m_ptr - runStart);
if ((mode == StrictJSON) && m_ptr < m_end && *m_ptr == '\\') {
++m_ptr;
if (m_ptr >= m_end)
return TokError;
switch (*m_ptr) {
case '"':
builder.append('"');
m_ptr++;
break;
case '\\':
builder.append('\\');
m_ptr++;
break;
case '/':
builder.append('/');
m_ptr++;
break;
case 'b':
builder.append('\b');
m_ptr++;
break;
case 'f':
builder.append('\f');
m_ptr++;
break;
case 'n':
builder.append('\n');
m_ptr++;
break;
case 'r':
builder.append('\r');
m_ptr++;
break;
case 't':
builder.append('\t');
m_ptr++;
break;
case 'u':
if ((m_end - m_ptr) < 5) // uNNNN == 5 characters
return TokError;
for (int i = 1; i < 5; i++) {
if (!isASCIIHexDigit(m_ptr[i]))
return TokError;
}
builder.append(AJ::Lexer::convertUnicode(m_ptr[1], m_ptr[2], m_ptr[3], m_ptr[4]));
m_ptr += 5;
break;
default:
return TokError;
}
}
} while ((mode == StrictJSON) && m_ptr != runStart && (m_ptr < m_end) && *m_ptr != '"');
if (m_ptr >= m_end || *m_ptr != '"')
return TokError;
token.stringToken = builder.build();
token.type = TokString;
token.end = ++m_ptr;
return TokString;
}
