public static EocAccessArrayExpression Translate(CodeConverter C, AccessArrayExpression expr)
{
if (expr == null)
{
return(null);
}
return(new EocAccessArrayExpression(C, EocExpression.Translate(C, expr.Target), EocExpression.Translate(C, expr.Index)));
}
private static Expression ParseExpression(BinaryReader reader, Encoding encoding, bool parseMember = true)
{
Expression result = null;
byte type;
while (true)
{
type = reader.ReadByte();
switch (type)
{
case 0x01:
result = ParamListEnd.Instance;
break;
case 0x16:
result = DefaultValueExpression.Instance;
break;
case 0x17:
result = new NumberLiteral(reader.ReadDouble());
break;
case 0x18:
result = BoolLiteral.ValueOf(reader.ReadInt16() != 0);
break;
case 0x19:
result = new DateTimeLiteral(DateTime.FromOADate(reader.ReadDouble()));
break;
case 0x1A:
result = new StringLiteral(reader.ReadBStr(encoding));
break;
case 0x1B:
result = new ConstantExpression(reader.ReadInt32());
break;
case 0x1C:
result = new ConstantExpression((short)(reader.ReadInt16() - 1), (short)(reader.ReadInt16() - 1));
break;
case 0x1D:
// 0x1D 0x38 <Int32:VarId>
continue;
case 0x1E:
result = new MethodPtrExpression(reader.ReadInt32());
break;
case 0x21:
result = ParseCallExpressionWithoutType(reader, encoding);
break;
case 0x23:
result = new EmnuConstantExpression((short)(reader.ReadInt16() - 1), (short)(reader.ReadInt16() - 1), reader.ReadInt32() - 1);
break;
case 0x37:
continue;
case 0x1F:
{
var array = new ArrayLiteralExpression();
Expression exp;
while (!((exp = ParseExpression(reader, encoding)) is ArrayLiteralEnd))
{
array.Add(exp);
}
result = array;
}
break;
case 0x20:
result = ArrayLiteralEnd.Instance;
break;
case 0x38: // ThisCall Or 访问变量
{
int variable = reader.ReadInt32();
if (variable == 0x0500FFFE)
{
reader.ReadByte(); // 0x3A
return(ParseExpression(reader, encoding, true));
}
else
{
result = new VariableExpression(variable);
parseMember = true;
}
}
break;
case 0x3B:
result = new NumberLiteral(reader.ReadInt32());
break;
default:
throw new Exception($"Unknown Type: {type.ToString("X2")}");
}
break;
}
if (parseMember &&
(result is VariableExpression ||
result is CallExpression ||
result is AccessMemberExpression ||
result is AccessArrayExpression))
{
while (reader.BaseStream.Position != reader.BaseStream.Length)
{
switch (reader.ReadByte())
{
case 0x39:
int memberId = reader.ReadInt32();
if (EplSystemId.GetType(memberId) == EplSystemId.Type_StructMember)
{
result = new AccessMemberExpression(result, reader.ReadInt32(), memberId);
}
else
{
result = new AccessMemberExpression(result, (short)(reader.ReadInt16() - 1), (short)(reader.ReadInt16() - 1), memberId - 1);
}
break;
case 0x3A:
result = new AccessArrayExpression(result, ParseExpression(reader, encoding, false));
break;
case 0x37:
goto parse_member_finish;
default:
reader.BaseStream.Position -= 1;
goto parse_member_finish;
}
}
}
parse_member_finish:
return(result);
}
private static Expression ParseExpression(BinaryReader reader, CodeSectionInfo codeSectionInfo, int blockId, bool parseMember = true)
{
Expression expression = null;
byte b = reader.ReadByte();
switch (b)
{
case 1:
expression = new ParamListEnd();
break;
case 22:
expression = null;
break;
case 23:
expression = new NumberLiteral(reader.ReadDouble());
break;
case 24:
expression = new BoolLiteral(reader.ReadInt16() != 0);
break;
case 25:
expression = new DateTimeLiteral(DateTime.FromOADate(reader.ReadDouble()));
break;
case 26:
expression = new StringLiteral(reader.ReadStringWithLengthPrefix());
break;
case 27:
expression = new ConstantExpression(-2, reader.ReadInt32());
break;
case 28:
expression = new ConstantExpression(reader.ReadInt16(), reader.ReadInt16());
break;
case 29:
if (reader.ReadByte() != 56)
{
throw new Exception();
}
expression = new VariableExpression(reader.ReadInt32(), codeSectionInfo, blockId);
break;
case 30:
expression = new SubPtrExpression(reader.ReadInt32(), codeSectionInfo);
break;
case 33:
expression = ParseCallExpressionWithoutType(reader, codeSectionInfo, blockId);
break;
case 35:
expression = new EmnuConstantExpression(reader.ReadInt32(), reader.ReadInt32());
break;
case 31:
{
ArrayLiteralExpression arrayLiteralExpression = new ArrayLiteralExpression();
Expression item;
while (!((item = ParseExpression(reader, codeSectionInfo, blockId, true)) is ArrayLiteralEnd))
{
arrayLiteralExpression.Value.Add(item);
}
expression = arrayLiteralExpression;
break;
}
case 32:
expression = new ArrayLiteralEnd();
break;
case 56:
{
int num = reader.ReadInt32();
if (num == 83951614)
{
reader.ReadByte();
expression = ParseExpression(reader, codeSectionInfo, blockId, true);
}
else
{
expression = new VariableExpression(num, codeSectionInfo, blockId);
}
break;
}
case 59:
expression = new NumberLiteral((double)reader.ReadInt32());
break;
default:
throw new Exception(string.Format("Unknown Type: {0}", b.ToString("X2")));
case 55:
break;
}
//bool flag = false;
if (parseMember && (expression is VariableExpression || expression is CallExpression))
{
while (reader.BaseStream.Position != reader.BaseStream.Length)
{
switch (reader.ReadByte())
{
case 57:
break;
case 58:
goto IL_027a;
default:
reader.BaseStream.Position -= 1L;
goto IL_02eb;
case 55:
goto IL_02eb;
}
int memberId = reader.ReadInt32();
int structId = reader.ReadInt32();
expression = new AccessMemberExpression(expression, structId, memberId);
continue;
IL_027a:
bool parseMember2 = reader.ReadByte() == 56;
reader.BaseStream.Position -= 1L;
expression = new AccessArrayExpression(expression, ParseExpression(reader, codeSectionInfo, blockId, parseMember2));
}
}
goto IL_02eb;
IL_02eb:
return(expression);
}
