Expression ParseSuffixedExpr(Scope scope, bool onlyDotColon = false)
{
// base primary expression
Expression prim = ParsePrimaryExpr(scope);
while (true)
{
if (reader.IsSymbol('.') || reader.IsSymbol(':'))
{
string symb = reader.Get().Data; // '.' or ':'
// TODO: should we allow keywords? I vote no.
if (!reader.Is(TokenType.Ident))
{
error("<Ident> expected");
}
Token id = reader.Get();
MemberExpr m = new MemberExpr();
m.Base = prim;
m.Indexer = symb;
m.Ident = id.Data;
prim = m;
}
else if (!onlyDotColon && reader.ConsumeSymbol('['))
{
int pass = 0;
const int maxamount = 100;
bool wasLastNumeric = false;
bool first = true;
bool hadComma = false;
do
{
Token tok = reader.Peek();
int col = tok.Column;
int line = tok.Line;
Expression ex = ParseExpr(scope);
//if (!reader.ConsumeSymbol(']'))
//error("']' expected");
IndexExpr i = new IndexExpr();
i.Base = prim;
i.Index = ex;
prim = i;
if ((first || wasLastNumeric) && ex is NumberExpr && hadComma == false)
{
tok = reader.Peek();
bool cma = reader.ConsumeSymbol(',');
if (cma && hadComma == false && first == false)
{
error("Unexpected ',' in matrice indexing", tok.Line, tok.Column, tok);
}
//else if (cma == false && hadComma)
// ;
hadComma = cma;
}
else
{
tok = reader.Peek();
bool cma = reader.ConsumeSymbol(',');
//if (cma == false)
// break;
if (cma && hadComma == false)
{
error("Unexpected ',' in matrice indexing", -1, -1, tok);
}
else if (cma == false && ex is NumberExpr == false && wasLastNumeric && hadComma == false)
{
error("Expected numeric constant in matrice indexing", line, col, tok);
}
else if (cma == false && hadComma)
{
if (tok.Type == TokenType.Symbol && tok.Data == "]")
{
;
}
else
{
error("Expected ','", -1, -1, tok);
}
}
else if (cma == false)
{
break;
}
else
{
hadComma = true;
}
hadComma = cma;
}
if (pass++ >= maxamount)
{
error("Maximum index depth reached");
}
wasLastNumeric = ex is NumberExpr;
first = false;
} while (!(reader.Peek().Data == "]"));
if (!reader.ConsumeSymbol(']'))
{
error("']' expected");
}
}
else if (!onlyDotColon && reader.ConsumeSymbol('('))
{
List <Expression> args = new List <Expression>();
while (!reader.ConsumeSymbol(')'))
{
Expression ex = ParseExpr(scope);
args.Add(ex);
if (!reader.ConsumeSymbol(','))
{
if (reader.ConsumeSymbol(')'))
{
break;
}
else
{
error("')' expected");
}
break;
}
}
CallExpr c = new CallExpr();
c.Base = prim;
c.Arguments = args;
prim = c;
}
else if (!onlyDotColon &&
(reader.Is(TokenType.SingleQuoteString) ||
reader.Is(TokenType.DoubleQuoteString) ||
reader.Is(TokenType.LongString)))
{
//string call
StringCallExpr e = new StringCallExpr();
e.Base = prim;
e.Arguments = new List <Expression> {
new StringExpr(reader.Peek().Data)
{
StringType = reader.Peek().Type
}
};
reader.Get();
prim = e;
}
else if (!onlyDotColon && reader.IsSymbol('{'))
{
// table call
// Fix for the issue with whole expr being parsed, not just table.
// See LuaMinify issue #2 (https://github.com/stravant/LuaMinify/issues/2)
//Expression ex = ParseExpr(scope);
Expression ex = ParseSimpleExpr(scope);
TableCallExpr t = new TableCallExpr();
t.Base = prim;
t.Arguments = new List <Expression> {
ex
};
prim = t;
}
else
{
break;
}
}
return(prim);
}
Expression ParseSuffixedExpr(Scope scope, bool onlyDotColon = false)
{
// base primary expression
Expression prim = ParsePrimaryExpr(scope);
while (true)
{
if (tok.IsSymbol('.') || tok.IsSymbol(':'))
{
string symb = tok.Get().Data; // '.' or ':'
// TODO: should we allow keywords?
if (!tok.Is(TokenType.Ident))
{
error("<Ident> expected");
}
Token id = tok.Get();
MemberExpr m = new MemberExpr();
m.Base = prim;
m.Indexer = symb;
m.Ident = id.Data;
prim = m;
}
else if (!onlyDotColon && tok.ConsumeSymbol('['))
{
Expression ex = ParseExpr(scope);
if (!tok.ConsumeSymbol(']'))
{
error("']' expected");
}
IndexExpr i = new IndexExpr();
i.Base = prim;
i.Index = ex;
prim = i;
}
else if (!onlyDotColon && tok.ConsumeSymbol('('))
{
List <Expression> args = new List <Expression>();
while (!tok.ConsumeSymbol(')'))
{
Expression ex = ParseExpr(scope);
args.Add(ex);
if (!tok.ConsumeSymbol(','))
{
if (tok.ConsumeSymbol(')'))
{
break;
}
else
{
error("')' expected");
}
}
}
CallExpr c = new CallExpr();
c.Base = prim;
c.Arguments = args;
prim = c;
}
else if (!onlyDotColon &&
(tok.Is(TokenType.SingleQuoteString) ||
tok.Is(TokenType.DoubleQuoteString) ||
tok.Is(TokenType.LongString)))
{
//string call
StringCallExpr e = new StringCallExpr();
e.Base = prim;
e.Arguments = new List <Expression> {
new StringExpr(tok.Peek().Data)
{
StringType = tok.Peek().Type
}
};
tok.Get();
prim = e;
}
else if (!onlyDotColon && tok.IsSymbol('{'))
{
// table call
Expression ex = ParseExpr(scope);
TableCallExpr t = new TableCallExpr();
t.Base = prim;
t.Arguments = new List <Expression> {
ex
};
prim = t;
}
else
{
break;
}
}
return(prim);
}
