} // ParseLeftHandSideExpression
// Parse a PrimaryExpression, filling in info with any declarations.
void ParsePrimaryExpression(FunctionInfo info)
{
string id;
double d;
string s;
if (tok.TryMatchKeyword("this"))
{
}
else if (tok.TryMatchKeyword("null"))
{
}
else if (tok.TryMatchKeyword("true"))
{
}
else if (tok.TryMatchKeyword("false"))
{
}
else if (tok.TryMatchOp("("))
{
ParseExpression(info, true);
tok.MatchOp(")");
}
else if (tok.TryMatchOp("{"))
{
if (!tok.PeekOp("}"))
{
do
{
if (tok.TryMatchNumLit(out d))
{
}
else if (tok.TryMatchStringLit(out s))
{
}
else
{
tok.MatchID();
}
tok.MatchOp(":");
ParseExpression(info, true, assignmentPrec);
}while (tok.TryMatchOp(","));
}
tok.MatchOp("}");
}
else if (tok.TryMatchOp("["))
{
bool requireComma = false;
while (!tok.PeekOp("]"))
{
if (tok.TryMatchOp(","))
{
requireComma = false;
}
else if (!requireComma)
{
ParseExpression(info, true, assignmentPrec);
requireComma = true;
}
else
{
break;
}
}
tok.MatchOp("]");
}
else if (tok.TryMatchID(out id))
{
if (id == "eval")
{
info.CallsEval();
}
else if (id == "arguments")
{
info.UsesArgs();
}
// If the id is not bound in any enclosing scope, then list it
// as a potential global. Note that this is conservative -- it
// may actually be bound by a declaration we haven't parsed yet.
//
// HACK snewman 8/9/01: as currently implemented, this will not
// filter out identifiers that are bound by an enclosing "catch"
// clause.
if (!info.IDHasNonglobalBinding(id))
{
info.program.PotentialGlobal(id);
}
}
else if (tok.TryMatchNumLit(out d))
{
}
else if (tok.TryMatchStringLit(out s))
{
}
else
{
tok.Match();
ReportError("bad token when an expression was expected");
}
} // ParsePrimaryExpression
} // ParseLeftHandSideExpression
// Parse a PrimaryExpression, filling in info with any declarations.
void ParsePrimaryExpression(FunctionInfo info)
{
string id;
double d;
string s;
if (tok.TryMatchKeyword("this"))
{}
else if (tok.TryMatchKeyword("null"))
{}
else if (tok.TryMatchKeyword("true"))
{}
else if (tok.TryMatchKeyword("false"))
{}
else if (tok.TryMatchOp("("))
{
ParseExpression(info, true);
tok.MatchOp(")");
}
else if (tok.TryMatchOp("{"))
{
if (!tok.PeekOp("}"))
{
do
{
if (tok.TryMatchNumLit(out d))
{}
else if (tok.TryMatchStringLit(out s))
{}
else
tok.MatchID();
tok.MatchOp(":");
ParseExpression(info, true, assignmentPrec);
}
while (tok.TryMatchOp(","));
}
tok.MatchOp("}");
}
else if (tok.TryMatchOp("["))
{
bool requireComma = false;
while (!tok.PeekOp("]"))
if (tok.TryMatchOp(","))
requireComma = false;
else if (!requireComma)
{
ParseExpression(info, true, assignmentPrec);
requireComma = true;
}
else
break;
tok.MatchOp("]");
}
else if (tok.TryMatchID(out id))
{
if (id == "eval")
info.CallsEval();
else if (id == "arguments")
info.UsesArgs();
// If the id is not bound in any enclosing scope, then list it
// as a potential global. Note that this is conservative -- it
// may actually be bound by a declaration we haven't parsed yet.
//
// HACK snewman 8/9/01: as currently implemented, this will not
// filter out identifiers that are bound by an enclosing "catch"
// clause.
if (!info.IDHasNonglobalBinding(id))
info.program.PotentialGlobal(id);
}
else if (tok.TryMatchNumLit(out d))
{}
else if (tok.TryMatchStringLit(out s))
{}
else
{
tok.Match();
ReportError("bad token when an expression was expected");
}
} // ParsePrimaryExpression