public override void Visit(IndexExpr expr)
{
if (expr.Target == null)
{
_needsAsync = true;
}
}
/// <summary>
/// Visits the function call expression tree
/// </summary>
/// <param name="exp"></param>
public object VisitIndex(IndexExpr exp)
{
_callBackOnNodeStart(exp);
_callBackOnNodeStart(exp.VarExp);
_callBackOnNodeStart(exp.IndexExp);
return(null);
}
/// <summary>
/// Evaluate object[index]
/// </summary>
/// <returns></returns>
public object VisitIndex(IndexExpr expr)
{
var ndxVal = expr.IndexExp.Evaluate(this);
var listObject = expr.VarExp.Evaluate(this);
// Check for empty objects.
ExceptionHelper.NotNull(expr, listObject, "indexing");
ExceptionHelper.NotNull(expr, ndxVal, "indexing");
var lobj = (LObject)listObject;
// CASE 1. Access
// e.g. Array: users[0]
// e.g. Map: users['total']
if (!expr.IsAssignment)
{
var result = EvalHelper.AccessIndex(Ctx.Methods, expr, lobj, (LObject)ndxVal);
return(result);
}
// CASE 2. Assignment
// e.g. Array: users[0] = 'john'
// e.g. Map: users['total'] = 200
// NOTE: In this case of assignment, return back a MemberAccess object descripting what is assign
var indexAccess = new IndexAccess();
indexAccess.Instance = lobj;
indexAccess.MemberName = (LObject)ndxVal;
return(indexAccess);
}
/// <summary>
/// Creates an index expression from the parameters supplied.
/// </summary>
/// <param name="varExp"></param>
/// <param name="indexExp"></param>
/// <param name="isAssignment"></param>
/// <param name="token"></param>
/// <returns></returns>
public static Expr Index(Expr varExp, Expr indexExp, bool isAssignment, TokenData token)
{
var exp = new IndexExpr();
exp.IsAssignment = isAssignment;
exp.VarExp = varExp;
exp.IndexExp = indexExp;
SetupContext(exp, token);
return(exp);
}
private Expr ParseIndexExpr(Expr prev)
{
var openBracket = Match("[");
var next = GetToken();
Expr projectionFilter = null;
if (next.Kind == "STRING" && GetToken(1).Kind == "]")
{
Match("STRING");
Match("]");
projectionFilter = new KeyExpr(GetLocation(next), prev, next.Text);
}
else if (next.Kind == "..")
{
Match("..");
next = GetToken();
if (next.Kind == "]")
{
Match("]");
projectionFilter = new SliceExpr(GetLocation(openBracket), prev, null, null);
}
else
{
var upperBound = ParseExpr();
projectionFilter = new SliceExpr(GetLocation(openBracket), prev, null, upperBound);
}
}
else
{
var filter = ParseExpr();
next = GetToken();
if (next.Kind == "..")
{
Expr upperBound = null;
Match("..");
next = GetToken();
if (next.Kind != "]")
{
upperBound = ParseExpr();
}
Match("]");
projectionFilter = new SliceExpr(GetLocation(openBracket), prev, filter, upperBound);
}
else
{
Match("]");
projectionFilter = new IndexExpr(GetLocation(openBracket), prev, filter);
}
}
return(projectionFilter);
}
public override Null Visit(IndexExpr node)
{
context = null;
node.computedType = new ErrorType();
base.Visit(node);
if (!(node.obj.computedType is ListType)) {
log.ErrorTypeMismatch(node.location, new ListType(), node.obj.computedType);
return null;
}
if (!node.index.computedType.IsInt()) {
log.ErrorTypeMismatch(node.location, new PrimType { kind = PrimKind.Int }, node.index.computedType);
return null;
}
node.computedType = node.obj.computedType.ItemType();
return null;
}
internal string DoExpr(Expression e)
{
string ret = null;
if (e is AnonymousFunctionExpr) // function() ... end
{
// TODO: optimize into InlineFunctionExpr?
AnonymousFunctionExpr f = e as AnonymousFunctionExpr;
StringBuilder sb = new StringBuilder();
sb.Append("function(");
for (int i = 0; i < f.Arguments.Count; i++)
{
sb.Append(f.Arguments[i].Name);
if (i != f.Arguments.Count - 1 || f.IsVararg)
{
sb.Append(",");
}
}
if (f.IsVararg)
{
sb.Append("...");
}
sb.Append(")");
sb.Append(DoChunk(f.Body));
sb.Append(" end");
ret = sb.ToString();
}
else if (e is BinOpExpr)
{
string left = DoExpr((e as BinOpExpr).Lhs);
string op = (e as BinOpExpr).Op;
string right = DoExpr((e as BinOpExpr).Rhs);
ret = string.Format("{0}{1}{2}", left, op, right);
}
else if (e is BoolExpr)
{
bool val = (e as BoolExpr).Value;
ret = val ? "true" : "false";
}
else if (e is CallExpr && (!(e is StringCallExpr) && !(e is TableCallExpr)))
{
CallExpr c = e as CallExpr;
StringBuilder sb = new StringBuilder();
sb.Append(DoExpr(c.Base) + "(");
for (int i = 0; i < c.Arguments.Count; i++)
{
sb.Append(DoExpr(c.Arguments[i]));
if (i != c.Arguments.Count - 1)
{
sb.Append(",");
}
}
sb.Append(")");
ret = sb.ToString();
}
else if (e is StringCallExpr)
{
StringCallExpr s = e as StringCallExpr;
ret = string.Format("{0}{1}", DoExpr(s.Base), DoExpr(s.Arguments[0]));
}
else if (e is TableCallExpr)
{
TableCallExpr s = e as TableCallExpr;
ret = string.Format("{0}{1}", DoExpr(s.Base), DoExpr(s.Arguments[0]));
}
else if (e is IndexExpr)
{
IndexExpr i = e as IndexExpr;
ret = string.Format("{0}[{1}]", DoExpr(i.Base), DoExpr(i.Index));
}
else if (e is InlineFunctionExpression) // |<args>| -> <exprs>
{
InlineFunctionExpression ife = e as InlineFunctionExpression;
StringBuilder sb = new StringBuilder();
sb.Append("|");
for (int i = 0; i < ife.Arguments.Count; i++)
{
sb.Append(ife.Arguments[i].Name);
if (i != ife.Arguments.Count - 1 || ife.IsVararg)
{
sb.Append(", ");
}
}
if (ife.IsVararg)
{
sb.Append("...");
}
sb.Append("|->");
for (int i2 = 0; i2 < ife.Expressions.Count; i2++)
{
sb.Append(DoExpr(ife.Expressions[i2]));
if (i2 != ife.Expressions.Count - 1)
{
sb.Append(",");
}
}
ret = sb.ToString();
}
else if (e is TableConstructorKeyExpr)
{
TableConstructorKeyExpr t = e as TableConstructorKeyExpr;
ret = "[" + DoExpr(t.Key) + "]=" + DoExpr(t.Value);
}
else if (e is MemberExpr)
{
MemberExpr m = e as MemberExpr;
ret = DoExpr(m.Base) + m.Indexer + m.Ident;
}
else if (e is NilExpr)
{
ret = "nil";
}
else if (e is NumberExpr)
{
ret = (e as NumberExpr).Value;
}
else if (e is StringExpr)
{
StringExpr se = e as StringExpr;
string delim = se.StringType == TokenType.SingleQuoteString ? "'" : (se.StringType == TokenType.DoubleQuoteString ? "\"" : "[");
if (delim == "[")
{
// Long strings keep their [=*[
ret = se.Value;
}
else
{
ret = delim + se.Value + delim;
}
}
else if (e is TableConstructorStringKeyExpr)
{
TableConstructorStringKeyExpr tcske = e as TableConstructorStringKeyExpr;
ret = tcske.Key + "=" + DoExpr(tcske.Value);
}
else if (e is TableConstructorExpr)
{
TableConstructorExpr t = e as TableConstructorExpr;
StringBuilder sb = new StringBuilder();
sb.Append("{");
for (int i = 0; i < t.EntryList.Count; i++)
{
sb.Append(DoExpr(t.EntryList[i]));
if (i != t.EntryList.Count - 1)
{
sb.Append(",");
}
}
sb.Append("}");
ret = sb.ToString();
}
else if (e is UnOpExpr)
{
string op = (e as UnOpExpr).Op;
string s = op;
if (s.Length != 1)
{
s += " ";
}
ret = s + DoExpr((e as UnOpExpr).Rhs);
}
else if (e is TableConstructorValueExpr)
{
ret = DoExpr((e as TableConstructorValueExpr).Value);
}
else if (e is VarargExpr)
{
ret = "...";
}
else if (e is VariableExpression)
{
ret = (e as VariableExpression).Var.Name;
}
if (ret != null)
{
return(string.Format("{0}{1}{2}", "(".Repeat(e.ParenCount), ret, ")".Repeat(e.ParenCount)));
}
throw new NotImplementedException(e.GetType().Name + " is not implemented");
}
internal string DoExpr(Expression e, List <Token> tok, ref int index, Scope s)
{
int startP = index;
for (int i = 0; i < e.ParenCount; i++)
{
index++;
}
string ret = null;
if (e is AnonymousFunctionExpr) // function() ... end
{
AnonymousFunctionExpr f = e as AnonymousFunctionExpr;
StringBuilder sb = new StringBuilder();
sb.Append(fromToken(tok[index++], s)); // 'function'
sb.Append(fromToken(tok[index++], s)); // '('
for (int i2 = 0; i2 < f.Arguments.Count; i2++)
{
sb.Append(fromToken(tok[index++], s));
if (i2 != f.Arguments.Count - 1 || f.IsVararg)
{
sb.Append(fromToken(tok[index++], s) + " ");
}
}
if (f.IsVararg)
{
sb.Append(fromToken(tok[index++], s));
}
sb.Append(fromToken(tok[index++], s)); // ')'
if (f.Body.Count > 1)
{
sb.Append(options.EOL);
indent++;
sb.Append(DoChunk(f.Body));
sb.Append(nldedent());
}
else if (f.Body.Count == 0)
{
sb.Append(" ");
}
else
{
sb.Append(" " + DoStatement(f.Body[0]));
sb.Append(" ");
}
//sb.Append(DoChunk(f.Body));
// Ugh.
sb.Append(fromToken(tok[index++], s)); // <end>
ret = sb.ToString();
}
else if (e is BinOpExpr)
{
//int i = 0;
string left = DoExpr((e as BinOpExpr).Lhs, tok, ref index, s);
string op = fromToken(tok[index++], s);
string right = DoExpr((e as BinOpExpr).Rhs, tok, ref index, s);
ret = string.Format("{0} {1} {2}", left, op, right);
}
else if (e is BoolExpr)
{
ret = fromToken(tok[index++], s);
}
else if (e is CallExpr && (!(e is StringCallExpr) && !(e is TableCallExpr)))
{
CallExpr c = e as CallExpr;
StringBuilder sb = new StringBuilder();
sb.Append(DoExpr(c.Base, tok, ref index, s) // <base>
+ fromToken(tok[index++], s)); // '('
for (int i = 0; i < c.Arguments.Count; i++)
{
sb.Append(DoExpr(c.Arguments[i], tok, ref index, s));
if (i != c.Arguments.Count - 1)
{
sb.Append(fromToken(tok[index++], s)); // ', '
sb.Append(" ");
}
}
sb.Append(fromToken(tok[index++], s)); // ')'
ret = sb.ToString();
}
else if (e is StringCallExpr)
{
StringCallExpr sc = e as StringCallExpr;
ret = string.Format("{0} {1}", DoExpr(sc.Base, tok, ref index, s), DoExpr(sc.Arguments[0], tok, ref index, s));
}
else if (e is TableCallExpr)
{
TableCallExpr sc = e as TableCallExpr;
ret = string.Format("{0} {1}", DoExpr(sc.Base, tok, ref index, s), DoExpr(sc.Arguments[0], tok, ref index, s));
}
else if (e is IndexExpr)
{
IndexExpr i = e as IndexExpr;
ret = string.Format("{0}{1}{2}{3}", DoExpr(i.Base, tok, ref index, s), fromToken(tok[index++], s), DoExpr(i.Index, tok, ref index, s), fromToken(tok[index++], s));
}
else if (e is InlineFunctionExpression) // |<args>| -> <exprs>
{
InlineFunctionExpression ife = e as InlineFunctionExpression;
StringBuilder sb = new StringBuilder();
sb.Append(fromToken(tok[index++], s)); // '|;
for (int i = 0; i < ife.Arguments.Count; i++)
{
sb.Append(fromToken(tok[index++], s)); // <arg name>
if (i != ife.Arguments.Count - 1 || ife.IsVararg)
{
sb.Append(fromToken(tok[index++], s)); // ','
sb.Append(" ");
}
}
if (ife.IsVararg)
{
sb.Append(fromToken(tok[index++], s)); // '...'
sb.Append(" ");
}
sb.Append(fromToken(tok[index++], s)); // '|'
sb.Append(" ");
sb.Append(fromToken(tok[index++], s)); // '->'
sb.Append(" ");
for (int i2 = 0; i2 < ife.Expressions.Count; i2++)
{
sb.Append(DoExpr(ife.Expressions[i2], tok, ref index, s));
if (i2 != ife.Expressions.Count - 1)
{
sb.Append(fromToken(tok[index++], s)); // ','
sb.Append(" ");
}
}
ret = sb.ToString();
}
else if (e is TableConstructorKeyExpr)
{
TableConstructorKeyExpr t = e as TableConstructorKeyExpr;
ret =
fromToken(tok[index++], s)
+ DoExpr(t.Key, tok, ref index, s)
+ fromToken(tok[index++], s)
+ " "
+ fromToken(tok[index++], s)
+ " "
+ DoExpr(t.Value, tok, ref index, s);
}
else if (e is MemberExpr)
{
MemberExpr m = e as MemberExpr;
ret = DoExpr(m.Base, tok, ref index, s) + fromToken(tok[index++], s) + fromToken(tok[index++], s);
}
else if (e is NilExpr)
{
ret = fromToken(tok[index++], s);
}
else if (e is NumberExpr)
{
ret = fromToken(tok[index++], s);
}
else if (e is StringExpr)
{
ret = fromToken(tok[index++], s);
}
else if (e is TableConstructorStringKeyExpr)
{
TableConstructorStringKeyExpr tcske = e as TableConstructorStringKeyExpr;
ret = fromToken(tok[index++], s); // key
ret += " ";
ret += fromToken(tok[index++], s); // '='
ret += " ";
ret += DoExpr(tcske.Value, tok, ref index, s); // value
}
else if (e is TableConstructorExpr)
{
TableConstructorExpr t = e as TableConstructorExpr;
StringBuilder sb = new StringBuilder();
sb.Append(fromToken(tok[index++], s)); // '{'
sb.Append(" ");
for (int i = 0; i < t.EntryList.Count; i++)
{
sb.Append(DoExpr(t.EntryList[i], tok, ref index, s));
if (i != t.EntryList.Count - 1)
{
sb.Append(fromToken(tok[index++], s)); // ','
sb.Append(" ");
}
}
if (t.EntryList.Count > 0) // empty table constructor is just { }
{
sb.Append(" ");
}
sb.Append(fromToken(tok[index++], s)); // '}'
ret = sb.ToString();
}
else if (e is UnOpExpr)
{
UnOpExpr u = e as UnOpExpr;
string sc = fromToken(tok[index++], s);
if (u.Op.Length != 1)
{
sc += " ";
}
ret = sc + DoExpr(u.Rhs, tok, ref index, s);
}
else if (e is TableConstructorValueExpr)
{
ret = DoExpr(((TableConstructorValueExpr)e).Value, tok, ref index, s);
}
else if (e is VarargExpr)
{
ret = fromToken(tok[index++], s);
}
else if (e is VariableExpression)
{
ret = fromToken(tok[index++], s);
}
else if (e is TableConstructorNamedFunctionExpr)
{
ret = DoStatement(((TableConstructorNamedFunctionExpr)e).Value);
}
if (ret != null)
{
if (e.ParenCount > 0)
{
StringBuilder sb = new StringBuilder();
for (int i = 0; i < e.ParenCount; i++)
{
sb.Append(fromToken(tok[startP++], s));
}
sb.Append(ret);
for (int i = 0; i < e.ParenCount; i++)
{
sb.Append(fromToken(tok[index++], s));
}
return(sb.ToString());
}
else
{
return(ret);
}
}
//return string.Format("{0}{1}{2}", "(".Repeat(e.ParenCount), ret, ")".Repeat(e.ParenCount));
throw new NotImplementedException(e.GetType().Name + " is not implemented");
}
string DoExpr(Expression e)
{
string ret = "";
if (e is AnonymousFunctionExpr) // function() ... end
{
AnonymousFunctionExpr f = e as AnonymousFunctionExpr;
StringBuilder sb = new StringBuilder();
sb.Append("function(");
for (int i = 0; i < f.Arguments.Count; i++)
{
sb.Append(f.Arguments[i].Name);
if (i != f.Arguments.Count - 1 || f.IsVararg)
{
sb.Append(", ");
}
}
if (f.IsVararg)
{
sb.Append("...");
}
sb.Append(")");
if (f.Body.Count > 1)
{
sb.Append(EOL);
indent++;
sb.Append(DoChunk(f.Body));
sb.Append(nldedent());
sb.Append("end");
}
else if (f.Body.Count == 0)
{
sb.Append(" end");
}
else
{
sb.Append(" " + DoStatement(f.Body[0]));
sb.Append(" end");
}
ret = sb.ToString();
}
else if (e is BinOpExpr)
{
BinOpExpr b = e as BinOpExpr;
string left = DoExpr(b.Lhs);
string op = b.Op;
string right = DoExpr(b.Rhs);
if (op == "!=")
{
op = "~=";
}
if (op == ">>")
{
ret = string.Format("bit.rshift({0}, {1})", left, right);
}
else if (op == "<<")
{
ret = string.Format("bit.lshift({0}, {1})", left, right);
}
else if (op == "&")
{
ret = string.Format("bit.band({0}, {1})", left, right);
}
else if (op == "|")
{
ret = string.Format("bit.bor({0}, {1})", left, right);
}
else if (op == "^^")
{
ret = string.Format("bit.bxor({0}, {1})", left, right);
}
else
{
ret = string.Format("{0} {1} {2}", left, op, right);
}
}
else if (e is BoolExpr)
{
bool val = (e as BoolExpr).Value;
ret = val ? "true" : "false";
}
else if (e is CallExpr && (!(e is StringCallExpr) && !(e is TableCallExpr)))
{
CallExpr c = e as CallExpr;
StringBuilder sb = new StringBuilder();
sb.Append(DoExpr(c.Base) + "(");
for (int i = 0; i < c.Arguments.Count; i++)
{
sb.Append(DoExpr(c.Arguments[i]));
if (i != c.Arguments.Count - 1)
{
sb.Append(", ");
}
}
sb.Append(")");
ret = sb.ToString();
}
else if (e is StringCallExpr)
{
StringCallExpr s = e as StringCallExpr;
ret = string.Format("{0} {1}", DoExpr(s.Base), DoExpr(s.Arguments[0]));
}
else if (e is TableCallExpr)
{
TableCallExpr s = e as TableCallExpr;
ret = string.Format("{0} {1}", DoExpr(s.Base), DoExpr(s.Arguments[0]));
}
else if (e is IndexExpr)
{
IndexExpr i = e as IndexExpr;
ret = string.Format("{0}[{1}]", DoExpr(i.Base), DoExpr(i.Index));
}
else if (e is InlineFunctionExpression) // |<args>| -> <exprs>
{
InlineFunctionExpression ife = e as InlineFunctionExpression;
StringBuilder sb = new StringBuilder();
sb.Append("function(");
for (int i = 0; i < ife.Arguments.Count; i++)
{
sb.Append(ife.Arguments[i].Name);
if (i != ife.Arguments.Count - 1 || ife.IsVararg)
{
sb.Append(", ");
}
}
if (ife.IsVararg)
{
sb.Append("...");
}
sb.Append(") return ");
for (int i2 = 0; i2 < ife.Expressions.Count; i2++)
{
sb.Append(DoExpr(ife.Expressions[i2]));
if (i2 != ife.Expressions.Count - 1)
{
sb.Append(", ");
}
}
sb.Append(" end");
ret = sb.ToString();
}
else if (e is TableConstructorKeyExpr)
{
TableConstructorKeyExpr t = e as TableConstructorKeyExpr;
ret = "[" + DoExpr(t.Key) + "] = " + DoExpr(t.Value);
}
else if (e is MemberExpr)
{
MemberExpr m = e as MemberExpr;
ret = DoExpr(m.Base) + m.Indexer + m.Ident;
}
else if (e is NilExpr)
{
ret = "nil";
}
else if (e is NumberExpr)
{
ret = (e as NumberExpr).Value;
ret = ret.Replace("_", "");
}
else if (e is StringExpr)
{
StringExpr se = e as StringExpr;
string delim = se.StringType == TokenType.SingleQuoteString ? "'" : se.StringType == TokenType.DoubleQuoteString ? "\"" : "[";
if (delim == "[")
{
// Long strings keep their [=*[
ret = se.Value;
}
else
{
ret = delim + se.Value + delim;
}
}
else if (e is TableConstructorStringKeyExpr)
{
TableConstructorStringKeyExpr tcske = e as TableConstructorStringKeyExpr;
ret = tcske.Key + " = " + DoExpr(tcske.Value);
}
else if (e is TableConstructorExpr)
{
TableConstructorExpr t = e as TableConstructorExpr;
StringBuilder sb = new StringBuilder();
sb.Append("{ ");
for (int i = 0; i < t.EntryList.Count; i++)
{
sb.Append(DoExpr(t.EntryList[i]));
if (i != t.EntryList.Count - 1)
{
sb.Append(", ");
}
}
sb.Append("} ");
ret = sb.ToString();
}
else if (e is UnOpExpr)
{
string op = (e as UnOpExpr).Op;
if (op == "!")
{
op = "not";
}
string s = op;
if (s == "~")
{
ret = "bit.bnot(" + DoExpr((e as UnOpExpr).Rhs) + ")";
}
else if (s == "+")
{
ret = "math.abs(" + DoExpr((e as UnOpExpr).Rhs) + ")";
}
else
{
if (s.Length != 1)
{
s += " ";
}
ret = s + DoExpr((e as UnOpExpr).Rhs);
}
}
else if (e is TableConstructorValueExpr)
{
ret = DoExpr((e as TableConstructorValueExpr).Value);
}
else if (e is VarargExpr)
{
ret = "...";
}
else if (e is VariableExpression)
{
ret = (e as VariableExpression).Var.Name;
}
else if (e is TableConstructorNamedFunctionExpr)
{
TableConstructorNamedFunctionExpr fs = e as TableConstructorNamedFunctionExpr;
AnonymousFunctionExpr a = new AnonymousFunctionExpr();
a.Arguments = fs.Value.Arguments;
a.Arguments.Insert(0, new Variable()
{
Name = "self", IsGlobal = false, References = -1
});
a.Body = fs.Value.Body;
a.IsVararg = fs.Value.IsVararg;
ret = DoExpr(fs.Value.Name) + " = " + DoExpr(a);
}
return(string.Format("{0}{1}{2}", oparens(e.ParenCount), ret, cparens(e.ParenCount)));
throw new NotImplementedException(e.GetType().Name + " is not implemented");
}
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);
}
public override void Visit(IndexExpr expr) => _needsAsyncByItself = true;
Expr SpecFuncs(CallExpr ce)
{
Expr src, ndx;
bool forPrev = false, forCell = false;
int nMinArgs = 1;
switch (ce.funcName)
{
case "PREVCELL":
forCell = true; forPrev = true; break;
case "PREV":
nMinArgs = 0; forPrev = true; break;
case "INDIRECT":
forCell = true; break;
case nameof(FuncDefs_Xlsx.COLUMN):
// avoid COLUMN(args) fixing
return(new CallExpr(nameof(FuncDefs_Xlsx.COLUMN), ce.args));
default:
return(ce);
}
if (ce.args.Count < nMinArgs)
{
return(ce);
}
Expr arg;
string name;
if (ce.args.Count == 0)
{
arg = null;
name = FCurrName;
}
else
{
arg = ce.args[0];
if (arg.nodeType == ExprType.Reference)
{
name = ((ReferenceExpr)arg).name;
if (IsColumnName(name) || !forPrev && IsFullRelativeCell(CellRange.FromName(name)))
{
forCell = true;
}
else
{
name = OPs.TryAsString(arg, ctxRow) ?? name;
}
}
else
{
arg = FixRowExpr(arg);
name = OPs.TryAsName(arg, ctxRow);
}
}
if (name == null)
{
var undefs = string.Join(", ", ctxHdr.NamesOfUndefinedValues().Concat(ctxRow.NamesOfUndefinedValues()));
throw new Source.Exception($"Constant expected as value of {ce.args[0]}={arg} // ??? {undefs}");
}
if (forCell || IsColumnName(name) || !forPrev && IsFullRelativeCell(CellRange.FromName(name)))
{
if (forPrev)
{
src = new IndexExpr(PrevValsRef, new ConstExpr(ctxRow.IndexOf(CellValsRef.name)));
}
else
{
var re1 = new ReferenceExpr(name);
var re2 = FixHdrCellRef(re1);
if (re2 != re1)
{
// ref to header cell
return(re2);
}
else
{
// ref to row cell
src = CellValsRef;
}
}
ndx = new ConstExpr(name);
}
else
{
int i = ctxRow.IndexOf(name);
if (i < 0 || Generator.Ctx.ctxDepthStep <= i)
{
throw new Source.Exception($"Value named '{name}' not found in row context");
}
src = PrevValsRef;
ndx = new ConstExpr(i);
}
return(new IndexExpr(src, ndx));
}
public virtual void Visit(IndexExpr expr)
{
}
void DoExpr(Expression e, bool setVar = false, int setVarLhsCount = -1, bool onlyCheckConsts = false)
{
if (e is AnonymousFunctionExpr) // function() ... end
{
}
else if (e is BinOpExpr)
{
BinOpExpr boe = e as BinOpExpr;
switch (boe.GetOperator())
{
case BinaryOperator.Add:
binOp("ADD", boe.Lhs, boe.Rhs);
return;
case BinaryOperator.Subtract:
binOp("SUB", boe.Lhs, boe.Rhs);
return;
case BinaryOperator.Multiply:
binOp("MUL", boe.Lhs, boe.Rhs);
return;
case BinaryOperator.Divide:
binOp("DIV", boe.Lhs, boe.Rhs);
return;
case BinaryOperator.Power:
binOp("POW", boe.Lhs, boe.Rhs);
return;
case BinaryOperator.Modulus:
binOp("MOD", boe.Lhs, boe.Rhs);
return;
case BinaryOperator.Concat:
binOp("CONCAT", boe.Lhs, boe.Rhs);
return;
case BinaryOperator.And:
break;
case BinaryOperator.Or:
break;
case BinaryOperator.LessThan:
break;
case BinaryOperator.LessThanOrEqualTo:
break;
case BinaryOperator.GreaterThan:
break;
case BinaryOperator.GreaterThanOrEqualTo:
break;
case BinaryOperator.NotEqual:
break;
case BinaryOperator.ShiftRight:
CallExpr ce = new CallExpr();
ce.Arguments.Add(boe.Lhs);
ce.Arguments.Add(boe.Rhs);
ce.Base = new MemberExpr()
{
Base = new VariableExpression()
{
Var = new Variable()
{
Name = "bit", IsGlobal = true
}
},
Ident = "rshift",
Indexer = ".",
};
DoExpr(ce);
return;
case BinaryOperator.ShiftLeft:
ce = new CallExpr();
ce.Arguments.Add(boe.Lhs);
ce.Arguments.Add(boe.Rhs);
ce.Base = new MemberExpr()
{
Base = new VariableExpression()
{
Var = new Variable()
{
Name = "bit", IsGlobal = true
}
},
Ident = "lshift",
Indexer = ".",
};
DoExpr(ce);
return;
case BinaryOperator.Xor:
ce = new CallExpr();
ce.Arguments.Add(boe.Lhs);
ce.Arguments.Add(boe.Rhs);
ce.Base = new MemberExpr()
{
Base = new VariableExpression()
{
Var = new Variable()
{
Name = "bit", IsGlobal = true
}
},
Ident = "bxor",
Indexer = ".",
};
DoExpr(ce);
return;
case BinaryOperator.BitAnd:
ce = new CallExpr();
ce.Arguments.Add(boe.Lhs);
ce.Arguments.Add(boe.Rhs);
ce.Base = new MemberExpr()
{
Base = new VariableExpression()
{
Var = new Variable()
{
Name = "bit", IsGlobal = true
}
},
Ident = "band",
Indexer = ".",
};
DoExpr(ce);
return;
case BinaryOperator.BitOr:
ce = new CallExpr();
ce.Arguments.Add(boe.Lhs);
ce.Arguments.Add(boe.Rhs);
ce.Base = new MemberExpr()
{
Base = new VariableExpression()
{
Var = new Variable()
{
Name = "bit", IsGlobal = true
}
},
Ident = "bor",
Indexer = ".",
};
DoExpr(ce);
return;
case BinaryOperator.BitNot:
ce = new CallExpr();
ce.Arguments.Add(boe.Lhs);
ce.Arguments.Add(boe.Rhs);
ce.Base = new MemberExpr()
{
Base = new VariableExpression()
{
Var = new Variable()
{
Name = "bit", IsGlobal = true
}
},
Ident = "bnot",
Indexer = ".",
};
DoExpr(ce);
return;
case BinaryOperator.NONE:
default:
throw new Exception("Unknown binary operator '" + boe.Op + "'");
}
}
else if (e is BoolExpr)
{
bool v = ((BoolExpr)e).Value;
Instruction i = new Instruction("LOADBOOL");
i.A = block.getreg();
i.B = v ? 1 : 0;
i.C = 0;
emit(i);
return;
}
else if (e is CallExpr)//&& (!(e is StringCallExpr) && !(e is TableCallExpr)))
{
CallExpr ce = e as CallExpr;
int breg = ++block.regnum;
DoExpr(ce.Base);
bool isZero = false;
bool isMethod = false;
Expression ex = ce.Base;
while (ex != null)
{
if (ex is IndexExpr)
{
ex = ((IndexExpr)ex).Index;
}
else if (ex is MemberExpr)
{
MemberExpr me = ex as MemberExpr;
if (me.Indexer == ":")
{
isMethod = true;
break;
}
else
{
break;
}
//ex = me.Ident;
}
else
{
break;
}
}
foreach (Expression e2 in ce.Arguments)
{
DoExpr(e2);
if (e2 is CallExpr || block.Chunk.Instructions[block.Chunk.Instructions.Count - 1].Opcode == Instruction.LuaOpcode.CALL)
{
isZero = true;
Instruction i_ = block.Chunk.Instructions[block.Chunk.Instructions.Count - 1];
Debug.Assert(i_.Opcode == Instruction.LuaOpcode.CALL);
i_.C = 0;
}
}
Instruction i = new Instruction("CALL");
i.A = breg;
if (isMethod)
{
//i.B++;
i.B = isZero ? 2 : (ce.Arguments.Count > 0 ? 2 + ce.Arguments.Count : 2);
}
else
{
i.B = isZero ? 0 : (ce.Arguments.Count > 0 ? 1 + ce.Arguments.Count : 1);
}
i.C = setVarLhsCount == 0 || setVarLhsCount == -1 ?
1 : //(isZero ? 0 : 1) :
1 + setVarLhsCount; // (isZero ? 0 : 1 + setVarLhsCount);
//i.C = setVarLhsCount == 0 || setVarLhsCount == -1 ? 1 : 1 + setVarLhsCount;
emit(i);
return;
}
else if (e is StringCallExpr)
{
throw new Exception();
}
else if (e is TableCallExpr)
{
throw new Exception();
}
else if (e is IndexExpr)
{
IndexExpr ie = e as IndexExpr;
int regnum = block.regnum;
DoExpr(ie.Base);
DoExpr(ie.Index);
Instruction i = new Instruction("GETTABLE");
i.A = regnum;
i.B = regnum;
i.C = block.regnum - 1;// block.getreg();
emit(i);
block.regnum = regnum + 1;
return;
}
else if (e is InlineFunctionExpression) // |<args>| -> <exprs>
{
InlineFunctionExpression i = e as InlineFunctionExpression;
AnonymousFunctionExpr af = new AnonymousFunctionExpr();
af.Arguments = i.Arguments;
af.IsVararg = i.IsVararg;
af.Body = new List <Statement>()
{
new ReturnStatement
{
Arguments = i.Expressions
}
};
DoExpr(af);
}
else if (e is MemberExpr)
{
MemberExpr me = e as MemberExpr;
if (me.Indexer == ".")
{
int regnum = block.regnum;
DoExpr(me.Base);
DoExpr(new StringExpr(me.Ident), false, -1, true);
Instruction i = new Instruction("GETTABLE");
i.A = regnum;
i.B = regnum;
i.C = 256 + block.K[me.Ident];
//i.C = block.regnum - 1;// block.getreg();
emit(i);
block.regnum = regnum + 1;
return;
}
else if (me.Indexer == ":")
{
int regnum = block.regnum;
DoExpr(me.Base);
DoExpr(new StringExpr(me.Ident), false, -1, true);
Instruction i = new Instruction("SELF");
i.A = regnum;
i.B = regnum;
i.C = 256 + block.K[me.Ident];
//i.C = block.regnum - 1;// block.getreg();
emit(i);
block.regnum = regnum + 1;
return;
}
else
{
throw new Exception("Unknown member indexer '" + me.Indexer + "'");
}
}
else if (e is NilExpr)
{
Instruction i = new Instruction("LOADNIL");
i.A = block.getreg();
i.B = setVarLhsCount == -1 ? i.A : setVarLhsCount - 1;
i.C = 0;
emit(i);
return;
}
else if (e is NumberExpr)
{
NumberExpr ne = e as NumberExpr;
// TODO: this can optimized into a Dictionary to avoid re-parsing numbers each time
double r;
int x = Lua.luaO_str2d(ne.Value.Replace("_", ""), out r);
if (x == 0)
{
throw new LuaSourceException(line, 0, "Invalid number");
}
if (onlyCheckConsts == false)
{
Instruction i = new Instruction("loadk");
i.A = block.getreg();
i.Bx = block.K[r];
emit(i);
}
else
{
block.K.Check(r);
}
return;
}
else if (e is StringExpr)
{
StringExpr se = e as StringExpr;
string s = se.Value;
if (se.StringType != TokenType.LongString)
{
s = Unescaper.Unescape(s);
}
else
{
int i = 1;
while (s[i] != '[')
{
i++;
}
i++;
s = s.Substring(i, s.Length - i - 2);
}
if (onlyCheckConsts == false)
{
Instruction i2 = new Instruction("loadk");
i2.A = block.getreg();
i2.Bx = block.K[s];
emit(i2);
}
else
{
block.K.Check(s);
}
return;
}
else if (e is TableConstructorExpr)
{
Instruction i = new Instruction("NEWTABLE");
int tblA = block.regnum;
i.A = block.getreg();
i.B = 0;
i.C = 0;
emit(i);
TableConstructorExpr tce = e as TableConstructorExpr;
if (tce.EntryList.Count == 0)
{
return;
}
int b = 0;
bool wasLastCall = false;
foreach (Expression e2 in tce.EntryList)
{
if (e2 is TableConstructorKeyExpr)
{
TableConstructorKeyExpr tcke = e2 as TableConstructorKeyExpr;
DoExpr(tcke.Key);
DoExpr(tcke.Value);
}
else if (e2 is TableConstructorNamedFunctionExpr)
{
TableConstructorNamedFunctionExpr tcnfe = e2 as TableConstructorNamedFunctionExpr;
}
else if (e2 is TableConstructorStringKeyExpr)
{
TableConstructorStringKeyExpr tcske = e2 as TableConstructorStringKeyExpr;
DoExpr(new StringExpr(tcske.Key));
DoExpr(tcske.Value);
}
else if (e2 is TableConstructorValueExpr)
{
TableConstructorValueExpr tcve = e2 as TableConstructorValueExpr;
DoExpr(tcve.Value);
if (tcve.Value is VarargExpr || tcve.Value is CallExpr)
{
wasLastCall = true;
}
else
{
wasLastCall = false;
}
}
b++;
}
i.B = b;
i = new Instruction("SETLIST");
i.A = tblA;
if (wasLastCall)
{
i.B = 0;
}
else
{
i.B = block.regnum - 1;
}
i.C = tblA + 1;
emit(i);
block.regnum = tblA;
return;
}
else if (e is UnOpExpr)
{
UnOpExpr uoe = e as UnOpExpr;
switch (uoe.GetOperator())
{
case UnaryOperator.Not:
unOp("NOT", uoe.Rhs);
return;
case UnaryOperator.Length:
unOp("LEN", uoe.Rhs);
return;
case UnaryOperator.BitNot:
CallExpr ce = new CallExpr();
ce.Arguments.Add(uoe.Rhs);
ce.Base = new MemberExpr()
{
Base = new VariableExpression()
{
Var = new Variable()
{
Name = "bit", IsGlobal = true
}
},
Ident = "bnot",
Indexer = ".",
};
DoExpr(ce);
return;
case UnaryOperator.Negate:
unOp("UNM", uoe.Rhs);
return;
case UnaryOperator.UnNegate:
ce = new CallExpr();
ce.Arguments.Add(uoe.Rhs);
ce.Base = new MemberExpr()
{
Base = new VariableExpression()
{
Var = new Variable()
{
Name = "math", IsGlobal = true
}
},
Ident = "abs",
Indexer = ".",
};
DoExpr(ce);
return;
case UnaryOperator.NONE:
default:
throw new Exception("Unknown unary operator '" + uoe.Op + "'");
}
}
else if (e is VarargExpr)
{
if (block.Chunk.Vararg == 0)
{
throw new LuaSourceException(0, 0, "Cannot use varargs (...) outside of a vararg function");
}
Instruction i = new Instruction("VARARG");
i.A = block.getreg();
if (setVar)
{
i.B = setVarLhsCount == -1 ? 0 : 1 + setVarLhsCount;
}
else
{
i.B = 0;
}
emit(i);
return;
}
else if (e is VariableExpression)
{
VariableExpression ve = e as VariableExpression;
if (ve.Var.IsGlobal == false)
{ // local
if (setVar)
{
//Instruction i = new Instruction("move");
//i.B = block.V[ve.Var.Name]; // moved into here
//i.A = block.getreg(); // from here
//emit(i);
int _TMP_001_ = block.V[ve.Var.Name]; // Should probably just add a Check method in Var2Reg
block.CheckLocalName(ve.Var.Name);
}
else
{
Instruction i = new Instruction("move");
i.B = block.V[ve.Var.Name]; // moved into here
i.A = block.getreg(); // from here
emit(i);
}
}
else
{ // global
Instruction i = null;
if (setVar)
{
i = new Instruction("setglobal");
i.A = block.regnum - 1; // ret
}
else
{
i = new Instruction("getglobal");
i.A = block.getreg(); // ret
}
i.Bx = block.K[ve.Var.Name]; // const
emit(i);
}
return;
}
throw new NotImplementedException(e.GetType().Name + " is not implemented");
}
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);
}
