public override IPStmt VisitAssertStmt(PParser.AssertStmtContext context)
{
IPExpr assertion = exprVisitor.Visit(context.assertion);
if (!PrimitiveType.Bool.IsSameTypeAs(assertion.Type))
{
throw handler.TypeMismatch(context.assertion, assertion.Type, PrimitiveType.Bool);
}
IPExpr message;
if (context.message == null)
{
message = new StringExpr(context, "", new List <IPExpr>());
}
else
{
message = exprVisitor.Visit(context.message);
if (!message.Type.IsSameTypeAs(PrimitiveType.String))
{
throw handler.TypeMismatch(context.message, message.Type, PrimitiveType.String);
}
}
return(new AssertStmt(context, assertion, message));
}
public override Null Visit(StringExpr node)
{
context = null;
node.computedType = new PrimType { kind = PrimKind.String };
return null;
}
static List <CompletionItem> DoExpr(Expression e)
{
List <CompletionItem> ret = new List <CompletionItem>();
if (e is AnonymousFunctionExpr)
{
AnonymousFunctionExpr f = e as AnonymousFunctionExpr;
for (int i = 0; i < f.Arguments.Count; i++)
{
ret.Add(new CompletionItem(f.Arguments[i].Name));
}
ret.AddRange(DoChunk(f.Body));
}
else if (e is BinOpExpr)
{
}
else if (e is BoolExpr)
{
}
else if (e is CallExpr && (!(e is StringCallExpr) && !(e is TableCallExpr)))
{
}
else if (e is StringCallExpr)
{
ret.AddRange(DoExpr(((StringCallExpr)e).Base));
}
else if (e is TableCallExpr)
{
ret.AddRange(DoExpr(((StringCallExpr)e).Base));
}
else if (e is IndexExpr)
{
ret.AddRange(DoExpr(((IndexExpr)e).Base));
ret.AddRange(DoExpr(((IndexExpr)e).Index));
}
else if (e is InlineFunctionExpression) // |<args>| -> <exprs>
{
InlineFunctionExpression ife = e as InlineFunctionExpression;
for (int i = 0; i < ife.Arguments.Count; i++)
{
ret.Add(new CompletionItem(ife.Arguments[i].Name));
}
}
else if (e is TableConstructorKeyExpr)
{
TableConstructorKeyExpr t = e as TableConstructorKeyExpr;
ret.AddRange(DoExpr(t.Key));
ret.AddRange(DoExpr(t.Value));
}
else if (e is MemberExpr)
{
MemberExpr m = e as MemberExpr;
ret.AddRange(DoExpr(m.Base));
ret.Add(new CompletionItem(m.Ident));
}
else if (e is NilExpr)
{
}
else if (e is NumberExpr)
{
}
else if (e is StringExpr)
{
StringExpr se = e as StringExpr;
}
else if (e is TableConstructorStringKeyExpr)
{
TableConstructorStringKeyExpr tcske = e as TableConstructorStringKeyExpr;
ret.Add(new CompletionItem(tcske.Key));
ret.AddRange(DoExpr(tcske.Value));
}
else if (e is TableConstructorExpr)
{
TableConstructorExpr t = e as TableConstructorExpr;
for (int i = 0; i < t.EntryList.Count; i++)
{
ret.AddRange(DoExpr(t.EntryList[i]));
}
}
else if (e is UnOpExpr)
{
}
else if (e is TableConstructorValueExpr)
{
ret.AddRange(DoExpr((e as TableConstructorValueExpr).Value));
}
else if (e is VarargExpr)
{
}
else if (e is VariableExpression)
{
ret.Add(new CompletionItem((e as VariableExpression).Var.Name));
}
return(ret);
}
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");
}
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 ParseSimpleExpr(Scope scope)
{
if (reader.Is(TokenType.Number))
{
return new NumberExpr {
Value = reader.Get().Data
}
}
;
else if (reader.Is(TokenType.DoubleQuoteString) || reader.Is(TokenType.SingleQuoteString) || reader.Is(TokenType.LongString))
{
StringExpr s = new StringExpr
{
Value = reader.Peek().Data,
StringType = reader.Peek().Type
};
reader.Get();
return(s);
}
else if (reader.ConsumeKeyword("nil"))
{
return(new NilExpr());
}
else if (reader.IsKeyword("false") || reader.IsKeyword("true"))
{
return new BoolExpr {
Value = reader.Get().Data == "true"
}
}
;
else if (reader.ConsumeSymbol("..."))
{
return(new VarargExpr());
}
else if (reader.ConsumeSymbol('{'))
{
TableConstructorExpr v = new TableConstructorExpr();
while (true)
{
if (reader.IsSymbol('['))
{
// key
reader.Get(); // eat '['
Expression key = ParseExpr(scope);
if (!reader.ConsumeSymbol(']'))
{
error("']' expected");
break;
}
if (!reader.ConsumeSymbol('='))
{
error("'=' Expected");
break;
}
Expression value = ParseExpr(scope);
v.EntryList.Add(new TableConstructorKeyExpr
{
Key = key,
Value = value,
});
}
else if (reader.Is(TokenType.Ident))
{
// value or key
Token lookahead = reader.Peek(1);
if (lookahead.Type == TokenType.Symbol && lookahead.Data == "=")
{
// we are a key
Token key = reader.Get();
if (!reader.ConsumeSymbol('='))
{
error("'=' Expected");
}
Expression value = ParseExpr(scope);
v.EntryList.Add(new TableConstructorStringKeyExpr
{
Key = key.Data,
Value = value,
});
}
else
{
// we are a value
Expression val = ParseExpr(scope);
v.EntryList.Add(new TableConstructorValueExpr
{
Value = val
});
}
}
#if !VANILLA_LUA
else if (reader.ConsumeKeyword("function"))
{
if (reader.Peek().Type != TokenType.Ident)
{
error("function name expected");
}
string name = reader.Get().Data;
FunctionStatement fs = ParseFunctionArgsAndBody(scope);
fs.IsLocal = false;
fs.Name = new StringExpr(name);
v.EntryList.Add(new TableConstructorNamedFunctionExpr
{
Value = fs
});
}
#endif
else if (reader.ConsumeSymbol('}'))
{
break;
}
else
{
//value
Expression value = ParseExpr(scope);
v.EntryList.Add(new TableConstructorValueExpr
{
Value = value
});
}
if (reader.ConsumeSymbol(';') || reader.ConsumeSymbol(','))
{
// I could have used just an empty statement (';') here, instead of { }
// but that leaves a warning, which clutters up the output
// other than that, all is good
}
else if (reader.ConsumeSymbol('}'))
{
break;
}
else
{
error("'}' or table entry Expected");
break;
}
}
return(v);
}
else if (reader.ConsumeKeyword("function"))
{
AnonymousFunctionExpr func = ParseExprFunctionArgsAndBody(scope);
//func.IsLocal = true;
return(func);
}
#if !VANILLA_LUA
else if (reader.ConsumeSymbol('|'))
{
// inline function... |<arg list>| -> <expr>, <expr>
InlineFunctionExpression func = new InlineFunctionExpression();
func.Scope = new Scope(scope);
// arg list
List <Variable> arglist = new List <Variable>();
bool isVarArg = false;
while (reader.ConsumeSymbol('|') == false)
{
if (reader.Is(TokenType.Ident))
{
Variable arg = new Variable();
arg.Name = reader.Get().Data;
func.Scope.AddLocal(arg);
arglist.Add(arg);
if (!reader.ConsumeSymbol(','))
{
if (reader.ConsumeSymbol('|'))
{
break;
}
else
{
error("'|' expected");
break;
}
}
}
else if (reader.ConsumeSymbol("..."))
{
isVarArg = true;
if (!reader.ConsumeSymbol('|'))
{
error("'...' must be the last argument of a function");
}
break;
}
else
{
error("Argument name or '...' expected");
break;
}
}
if (!reader.ConsumeSymbol("->"))
{
error("'->' expected");
}
// body
List <Expression> body = new List <Expression> {
ParseExpr(func.Scope)
};
while (reader.ConsumeSymbol(','))
{
body.Add(ParseExpr(func.Scope));
}
// end
//nodeFunc.AstType = AstType.Function;
func.Arguments = arglist;
func.Expressions = body;
func.IsVararg = isVarArg;
return(func);
}
#endif
else
{
return(ParseSuffixedExpr(scope));
}
}
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");
}
// <-- Name
// | FN Name TupleType
// | BOOL_LITERAL
// | INT_LITERAL
// | STRING_LITERAL
// | LPAREN (Expression)? RPAREN
private IUnboundExpr PrimaryExpr()
{
IUnboundExpr expression;
if (CurrentIs(TokenType.Name))
{
var name = Consume();
expression = new NameExpr(name.Position, name.StringValue, TypeArgs());
}
else if (CurrentIs(TokenType.Fn)) expression = FuncExpr();
else if (CurrentIs(TokenType.Bool)) expression = new BoolExpr(Consume(TokenType.Bool));
else if (CurrentIs(TokenType.Int)) expression = new IntExpr(Consume(TokenType.Int));
else if (CurrentIs(TokenType.String)) expression = new StringExpr(Consume(TokenType.String));
else if (CurrentIs(TokenType.LeftParen))
{
Token leftParen = Consume(TokenType.LeftParen);
if (CurrentIs(TokenType.RightParen))
{
// () -> unit
expression = new UnitExpr(leftParen.Position);
}
else if (CurrentIs(TokenType.Operator))
{
// ( OPERATOR ) -> an operator in prefix form
Token op = Consume(TokenType.Operator);
expression = new NameExpr(op.Position, op.StringValue);
}
else
{
// anything else is a regular parenthesized expression
expression = Expression();
}
Consume(TokenType.RightParen);
}
else expression = null;
return expression;
}