public MipsProgram VisitStringConstant(ASTCILStringConstantNode StringConstant)
{
var result = new MipsProgram();
var stringValue = Regex.Unescape(StringConstant.Value);
if (!StringConstantGenerated.TryGetValue(StringConstant.Value, out var labelStringConstant))
{
result.SectionData.Append(MipsGenerationHelper.NewScript()
.AddData(StringConstant.ObjectLabel,
new[]
{
MipsGenerationHelper.AddIntData(
labelGenerator.GenerateLabelTypeInfo(CompilationUnit.TypeEnvironment.String.Name)),
MipsGenerationHelper.AddIntData(StringConstant.ValueLabel),
MipsGenerationHelper.AddIntData(stringValue.Length)
})
.Comment(StringConstant.Value)
.AddData(StringConstant.ValueLabel, new[]
{
MipsGenerationHelper.AddByteData(Regex.Unescape(StringConstant.Value).Select(x => (int)x))
}));
StringConstantGenerated.Add(StringConstant.Value, StringConstant.ObjectLabel);
labelStringConstant = StringConstant.ObjectLabel;
}
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.LoadFromAddress(MipsRegisterSet.a0, labelStringConstant)
.Add(MipsRegisterSet.a0, 4));
return(result);
}
public MipsProgram VisitAssignment(ASTCILAssignmentNode Assignment)
{
var result = Assignment.Expresion.Accept(this);
var symbolInfo = Assignment.Identifier;
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.Move(MipsRegisterSet.t0, MipsRegisterSet.a0));
if (symbolInfo.Kind == ObjectKind.Local)
{
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.GetLocalAddress(symbolInfo.Offset));
}
else
{
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.GetParamAddress(symbolInfo.Offset));
}
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.SaveToMemory(MipsRegisterSet.t0, MipsRegisterSet.a0)
.LoadFromMemory(MipsRegisterSet.a0, MipsRegisterSet.a0));
return(result);
}
public MipsProgram VisitVoid(ASTCILVoidNode Void)
{
var result = new MipsProgram();
result.SectionCode.Append(MipsGenerationHelper.NewScript().LoadFromAddress(MipsRegisterSet.a0, labelGenerator.GenerateVoid()));
return(result);
}
public MipsProgram VisitStringConcat(ASTCILStringConcatNode stringConcat)
{
var tags1 = labelGenerator.GenerateIf();
var tags2 = labelGenerator.GenerateIf();
var result = new MipsProgram();
result.SectionFunctions.Append(MipsGenerationHelper.NewScript()
.Tag(stringConcat.Tag)
.GetParam(MipsRegisterSet.a1, 0)
.GetParam(MipsRegisterSet.a2, 4)
.LoadFromMemory(MipsRegisterSet.t1, MipsRegisterSet.a1, 4)
.LoadFromMemory(MipsRegisterSet.t2, MipsRegisterSet.a2, 4)
.Add(MipsRegisterSet.t2, 1)
.Add(MipsRegisterSet.t1, MipsRegisterSet.t2, MipsRegisterSet.t0)
.Allocate(MipsRegisterSet.t0, MipsRegisterSet.a0)
.LoadFromMemory(MipsRegisterSet.a1, MipsRegisterSet.a1)
.LoadFromMemory(MipsRegisterSet.a2, MipsRegisterSet.a2)
.Copy(MipsRegisterSet.a1, MipsRegisterSet.a0, MipsRegisterSet.t1, tags1.end, tags1.@else)
.Copy(MipsRegisterSet.a2, MipsRegisterSet.a0, MipsRegisterSet.t2, tags2.end, tags2.@else)
.Sub(MipsRegisterSet.a0, MipsRegisterSet.t0)
.Sub(MipsRegisterSet.t0, 1));
result.SectionFunctions.Append(CreateString(MipsRegisterSet.a0, MipsRegisterSet.t0).SectionCode);
result.SectionFunctions.Append(MipsGenerationHelper.NewScript()
.Return());
return(result);
}
public MipsProgram VisitFunc(ASTCILFuncNode Func)
{
var result = new MipsProgram();
var body = new MipsProgram();
foreach (var item in Func.Body)
{
body += item.Accept(this);
}
var off = Func.Method.Locals.Count() * 4;
result.SectionTextGlobals.Append(MipsGenerationHelper.NewScript().GlobalSection(Func.Tag));
result.SectionFunctions.Append(MipsGenerationHelper.NewScript().Tag(Func.Tag));
result.SectionFunctions.Append(MipsGenerationHelper.NewScript().Sub(MipsRegisterSet.sp, off, MipsRegisterSet.sp));
result.SectionFunctions.Append(body.SectionCode);
if (Func.Boxing)
{
var label = labelGenerator.GenerateLabelTypeInfo(Func.BoxingType.Name);
result.SectionFunctions.Append(MipsGenerationHelper.NewScript().Boxing(label));
}
result.SectionFunctions.Append(MipsGenerationHelper.NewScript().Return());
result.SectionData.Append(body.SectionData);
return(result);
}
public MipsProgram VisitStringSubStr(ASTCILStringSubStrNode stringSubStr)
{
var tag1 = labelGenerator.GenerateIf();
var tag2 = labelGenerator.GenerateIf();
var tag3 = labelGenerator.GenerateIf();
var result = new MipsProgram();
result.SectionFunctions.Append(MipsGenerationHelper.NewScript()
.Tag(stringSubStr.Tag)
.GetParam(MipsRegisterSet.a1, 0)
.LoadFromMemory(MipsRegisterSet.t0, MipsRegisterSet.a1, 4)
.LoadFromMemory(MipsRegisterSet.a1, MipsRegisterSet.a1)
.GetParam(MipsRegisterSet.a2, 4)
.BranchLessThan(MipsRegisterSet.a2, 0, tag1.@else)
.GetParam(MipsRegisterSet.a3, 8)
.BranchLessThan(MipsRegisterSet.a3, 0, tag1.@else)
.Add(MipsRegisterSet.a2, MipsRegisterSet.a3, MipsRegisterSet.t1)
.BranchLessThan(MipsRegisterSet.t0, MipsRegisterSet.t1, tag1.@else)
.Add(MipsRegisterSet.a3, 1, MipsRegisterSet.t1)
.Allocate(MipsRegisterSet.t1, MipsRegisterSet.t0)
.Add(MipsRegisterSet.a1, MipsRegisterSet.a2)
.Copy(MipsRegisterSet.a1, MipsRegisterSet.t0, MipsRegisterSet.a3, tag2.end, tag2.@else)
.SaveByte(MipsRegisterSet.zero, MipsRegisterSet.t0)
.Sub(MipsRegisterSet.t1, 1)
.Sub(MipsRegisterSet.t0, MipsRegisterSet.t1));
result.SectionFunctions.Append(CreateString(MipsRegisterSet.t0, MipsRegisterSet.t1).SectionCode);
result.SectionFunctions.Append(MipsGenerationHelper.NewScript()
.Return()
.Tag(tag1.@else)
.ThrowRuntimeError(RuntimeErrors.SubStringOutOfRange, labelGenerator));
return(result);
}
public MipsProgram VisitSelf(ASTCILSelfNode Self)
{
var result = new MipsProgram();
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.GetParam(MipsRegisterSet.a0, 0));
return(result);
}
public MipsProgram VisitIntConstant(ASTCILIntConstantNode IntConstant)
{
var result = new MipsProgram();
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.LoadConstant(MipsRegisterSet.a0, IntConstant.Value));
return(result);
}
public MipsProgram VisitGoto(ASTCILGotoNode Goto)
{
var result = new MipsProgram();
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.JumpToLabel(Goto.Label));
return(result);
}
public MipsProgram VisitBoolNot(ASTCILBoolNotNode BoolNot)
{
var result = BoolNot.Expression.Accept(this);
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.Not(MipsRegisterSet.a0));
return(result);
}
public MipsProgram VisitBoolConstant(ASTCILBoolConstantNode BoolConstant)
{
var result = new MipsProgram();
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.LoadConstant(MipsRegisterSet.a0,
BoolConstant.Value ? MipsGenerationHelper.TRUE : MipsGenerationHelper.FALSE));
return(result);
}
public override string ToString()
{
return(new StringBuilder().Append(MipsGenerationHelper.NewScript().DataSection())
.Append(SectionDataGlobals)
.Append(SectionData)
.AppendLine()
.Append(MipsGenerationHelper.NewScript().TextSection()).Append(SectionTextGlobals).Append(SectionCode)
.Append(SectionFunctions).ToString());
}
public MipsProgram VisitBoxing(ASTCILBoxingNode Boxing)
{
var result = Boxing.Expression.Accept(this);
var label = labelGenerator.GenerateLabelTypeInfo(Boxing.Type.Name);
result.SectionCode.Append(MipsGenerationHelper.NewScript().Boxing(label));
return(result);
}
public MipsProgram VisitRuntimeError(ASTCILRuntimeErrorNode RuntimeError)
{
var result = new MipsProgram();
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.ThrowRuntimeError(RuntimeError.Id, labelGenerator));
return(result);
}
public MipsProgram VisitIOInInt(ASTCILIOInIntNode IOInInt)
{
var result = new MipsProgram();
result.SectionFunctions.Append(MipsGenerationHelper.NewScript()
.Tag(IOInInt.Tag)
.ReadInt(MipsRegisterSet.a0)
.Return());
return(result);
}
public MipsProgram VisitIsVoid(ASTCILIsVoidNode IsVoid)
{
var result = IsVoid.Expression.Accept(this);
var(endLabel, elseLabel, _) = labelGenerator.GenerateIf();
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.IsVoid(labelGenerator.GenerateVoid(), elseLabel, endLabel));
return(result);
}
public MipsProgram VisitGetAttr(ASTCILGetAttrNode GetAttr)
{
var attr_offset = GetAttr.Atribute.Offset;
var result = new MipsProgram();
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.GetParam(MipsRegisterSet.a0, 0)
.LoadFromMemory(MipsRegisterSet.a0, MipsRegisterSet.a0, attr_offset));
return(result);
}
public MipsProgram VisitObjectTypeName(ASTCILObjectTypeNameNode objectTypeName)
{
var result = new MipsProgram();
result.SectionFunctions.Append(MipsGenerationHelper.NewScript()
.Tag(objectTypeName.Tag)
.GetParam(MipsRegisterSet.a0, 0)
.LoadFromMemory(MipsRegisterSet.a0, MipsRegisterSet.a0, MipsGenerationHelper.TypeInfoOffest)
.LoadFromMemory(MipsRegisterSet.a0, MipsRegisterSet.a0, MipsGenerationHelper.TypeNameOffset)
.Return());
return(result);
}
public MipsProgram VisitIOOutString(ASTCILIOOutStringNode IOOutString)
{
var result = new MipsProgram();
result.SectionFunctions.Append(MipsGenerationHelper.NewScript()
.Tag(IOOutString.Tag)
.GetParam(MipsRegisterSet.a0, 4)
.LoadFromMemory(MipsRegisterSet.a0, MipsRegisterSet.a0)
.PrintString(MipsRegisterSet.a0)
.GetParam(MipsRegisterSet.a0, 0)
.Return());
return(result);
}
public MipsProgram VisitSetAttribute(ASTCILSetAttributeNode SetAttribute)
{
var attr_offset = SetAttribute.Atribute.Offset;
var result = SetAttribute.Expression.Accept(this);
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.Move(MipsRegisterSet.t0, MipsRegisterSet.a0)
.GetParam(MipsRegisterSet.a0, 0)
.SaveToMemory(MipsRegisterSet.t0, MipsRegisterSet.a0, attr_offset)
.LoadFromMemory(MipsRegisterSet.a0, MipsRegisterSet.a0, attr_offset));
return(result);
}
public MipsProgram VisitType(ASTCILTypeNode Type)
{
var result = new MipsProgram();
foreach (var method in Type.Methods)
{
result += method.Accept(this);
}
var typeName = Type.Type.Name;
var typeNameParent = Type.Type.Parent?.Name;
var label_type_name = labelGenerator.GenerateLabelTypeName(typeName);
result.SectionData.Append(MipsGenerationHelper.NewScript()
.AddData(label_type_name.value, new[]
{
MipsGenerationHelper.AddStringData(typeName)
}));
result.SectionData.Append(MipsGenerationHelper.NewScript()
.AddData(label_type_name.@object, new[]
{
MipsGenerationHelper.AddIntData(label_type_name.value),
MipsGenerationHelper.AddIntData(typeName.Length)
}));
var label_virtual_table = labelGenerator.GenerateLabelVirtualTable(typeName);
result.SectionData.Append(MipsGenerationHelper.NewScript()
.AddData(label_virtual_table,
Type.VirtualTable.Select(x =>
MipsGenerationHelper.AddIntData(labelGenerator.GenerateFunc(x.Type.Name, x.Name)))));
var typeInfo_label = labelGenerator.GenerateLabelTypeInfo(typeName);
var typeInfo_label_parent = typeNameParent != null?labelGenerator.GenerateLabelTypeInfo(typeNameParent) : labelGenerator.GenerateVoid();
result.SectionData.Append(MipsGenerationHelper.NewScript()
.AddData(typeInfo_label, new[]
{
MipsGenerationHelper.AddIntData(label_type_name.@object),
MipsGenerationHelper.AddIntData(Type.Type.AllocateSize),
MipsGenerationHelper.AddIntData(label_virtual_table),
MipsGenerationHelper.AddIntData(typeInfo_label_parent)
}));
result.SectionDataGlobals.Append(MipsGenerationHelper.NewScript().GlobalSection(label_type_name.value)
.GlobalSection(label_type_name.@object)
.GlobalSection(label_virtual_table).GlobalSection(typeInfo_label));
return(result);
}
public MipsProgram VisitMultiplyTwoVariables(ASTCILMultiplyTwoVariablesNode MultiplyTwoVariables)
{
var left = MultiplyTwoVariables.Left.Accept(this);
left.SectionCode.Append(MipsGenerationHelper.NewScript()
.Push(MipsRegisterSet.a0));
var right = MultiplyTwoVariables.Right.Accept(this);
right.SectionCode.Append(MipsGenerationHelper.NewScript()
.Pop(MipsRegisterSet.t0)
.Mul(MipsRegisterSet.a0, MipsRegisterSet.t0));
return(left + right);
}
public MipsProgram VisitAllocate(ASTCILAllocateNode Allocate)
{
var label = labelGenerator.GenerateLabelTypeInfo(Allocate.Type.Name);
var result = new MipsProgram();
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.LoadFromAddress(MipsRegisterSet.t0, label)
.LoadFromMemory(MipsRegisterSet.a0, MipsRegisterSet.t0, MipsGenerationHelper.SizeOfOffset)
.Add(MipsRegisterSet.a0, 4)
.Allocate(MipsRegisterSet.a0, MipsRegisterSet.a0)
.SaveToMemory(MipsRegisterSet.t0, MipsRegisterSet.a0)
.Add(MipsRegisterSet.a0, 4));
return(result);
}
public MipsProgram VisitObjectCopy(ASTCILObjectCopyNode objectCopy)
{
var result = new MipsProgram();
var tags = labelGenerator.GenerateIf();
var boolTypeInfo = labelGenerator.GenerateLabelTypeInfo(CompilationUnit.TypeEnvironment.Bool.Name);
var IntTypeInfo = labelGenerator.GenerateLabelTypeInfo(CompilationUnit.TypeEnvironment.Int.Name);
var intLabel = labelGenerator.GenerateIf();
var boolLabel = labelGenerator.GenerateIf();
result.SectionFunctions.Append(MipsGenerationHelper.NewScript()
.Tag(objectCopy.Tag)
.GetParam(MipsRegisterSet.a0, 0) // a0<- self
.LoadFromMemory(MipsRegisterSet.t0, MipsRegisterSet.a0,
MipsGenerationHelper.TypeInfoOffest) //t0 <- self.type_info
.LoadFromMemory(MipsRegisterSet.t1, MipsRegisterSet.t0,
MipsGenerationHelper.SizeOfOffset) //t1 <- self.size
.Add(MipsRegisterSet.t1, 4)
.Allocate(MipsRegisterSet.t1, MipsRegisterSet.a0) //a0<- new (allocate does not use t0 or t1)
.SaveToMemory(MipsRegisterSet.t0, MipsRegisterSet.a0) //putting self.typeInfo in a0 typeinfo area
.Add(MipsRegisterSet.a0, 4, MipsRegisterSet.t0) //to copy in t0
.Sub(MipsRegisterSet.t1, 4) //Size Copy in t1
.Move(MipsRegisterSet.a2, MipsRegisterSet.t1)
.GetParam(MipsRegisterSet.a0, 0) //From copy (self in a0)
.Copy(MipsRegisterSet.a0, MipsRegisterSet.t0, MipsRegisterSet.t1, tags.end,
tags.@else) //word to word copy
.Sub(MipsRegisterSet.t0, MipsRegisterSet.a2, MipsRegisterSet.a0)
.Move(MipsRegisterSet.a2, MipsRegisterSet.a0)
.LoadFromMemory(MipsRegisterSet.a0, MipsRegisterSet.a0, MipsGenerationHelper.TypeInfoOffest)
.LoadFromAddress(MipsRegisterSet.t0, IntTypeInfo)
.BranchOnEquals(MipsRegisterSet.a0, MipsRegisterSet.t0, intLabel.@else)
.JumpToLabel(intLabel.end)
.Tag(intLabel.@else)
.LoadFromMemory(MipsRegisterSet.a0, MipsRegisterSet.a2)
.Return()
.Tag(intLabel.end)
.LoadFromMemory(MipsRegisterSet.a0, MipsRegisterSet.a0, MipsGenerationHelper.TypeInfoOffest)
.LoadFromAddress(MipsRegisterSet.t0, boolTypeInfo)
.BranchOnEquals(MipsRegisterSet.a0, MipsRegisterSet.t0, boolLabel.@else)
.JumpToLabel(boolLabel.end)
.Tag(boolLabel.@else)
.LoadFromMemory(MipsRegisterSet.a0, MipsRegisterSet.a2)
.Return()
.Tag(boolLabel.end)
.Move(MipsRegisterSet.a0, MipsRegisterSet.a2)
.Return());
return(result);
}
public MipsProgram VisitEqualString(ASTCILEqualStringNode EqualString)
{
var left = EqualString.Left.Accept(this);
left.SectionCode.Append(MipsGenerationHelper.NewScript()
.Push(MipsRegisterSet.a0));
var right = EqualString.Right.Accept(this);
right.SectionCode.Append(MipsGenerationHelper.NewScript()
.Push(MipsRegisterSet.a0)
.LoadFromAddress(MipsRegisterSet.a0, MipsGenerationHelper.StringEqualsLabel)
.Call(MipsRegisterSet.a0)
.Pop(MipsRegisterSet.a1)
.Pop(MipsRegisterSet.a1));
return(left + right);
}
public MipsProgram VisitId(ASTCILIdNode Id)
{
var info = Id.Name;
var result = new MipsProgram();
if (info.Kind == ObjectKind.Local)
{
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.GetLocal(info.Offset));
}
if (info.Kind == ObjectKind.Parameter)
{
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.GetParam(MipsRegisterSet.a0, info.Offset));
}
return(result);
}
public MipsProgram VisitFuncVirtualCall(ASTCILFuncVirtualCallNode FuncVirtualCall)
{
var result = new MipsProgram();
var cant = FuncVirtualCall.Arguments.Count;
result.SectionCode.Append(MipsGenerationHelper.NewScript().Sub(MipsRegisterSet.sp, 4 * cant));
for (int i = 0; i < cant; i++)
{
result += FuncVirtualCall.Arguments[i].Accept(this); // leave in a0 expresion result
if (i == 0)
{
var(endLabel, elseLabel, _) = labelGenerator.GenerateIf();
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.LoadFromAddress(MipsRegisterSet.t0, labelGenerator.GenerateVoid())
.BranchOnEquals(MipsRegisterSet.t0, MipsRegisterSet.a0, elseLabel)
.JumpToLabel(endLabel)
.Tag(elseLabel)
//.LoadConstant(MipsRegisterSet.a0, MipsGenerationHelper.TRUE) TODO: throw void execption dispatch
.Tag(endLabel));
}
result.SectionCode.Append(MipsGenerationHelper.NewScript().SaveToMemory(MipsRegisterSet.a0, MipsRegisterSet.sp, 4 * (i)));
}
// moving self to a0
result.SectionCode.Append(MipsGenerationHelper.NewScript().LoadFromMemory(MipsRegisterSet.a0, MipsRegisterSet.sp));
//loading self.typeInfo in a0
result.SectionCode.Append(MipsGenerationHelper.NewScript().LoadFromMemory(MipsRegisterSet.a0, MipsRegisterSet.a0, MipsGenerationHelper.TypeInfoOffest));
//loading typeInfo.virtual_table in a0
result.SectionCode.Append(MipsGenerationHelper.NewScript().LoadFromMemory(MipsRegisterSet.a0, MipsRegisterSet.a0, MipsGenerationHelper.VirtualTableOffset));
var virtualTable = CompilationUnit.MethodEnvironment.GetVirtualTable(FuncVirtualCall.Type);
var virtualMethod = virtualTable.Single(x => x.Name == FuncVirtualCall.MethodName);
int index = virtualTable.IndexOf(virtualMethod);
int offset = 4 * index;
// loading virtual_table.f in a0
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.LoadFromMemory(MipsRegisterSet.a0, MipsRegisterSet.a0, offset)
.Call(MipsRegisterSet.a0)
.Add(MipsRegisterSet.sp, cant * 4));
return(result);
}
public MipsProgram VisitLessThanTwoVariables(ASTCILLessThanTwoVariablesNode LessThanTwoVariables)
{
(string end_label, string else_label, _) = labelGenerator.GenerateIf();
var left = LessThanTwoVariables.Left.Accept(this);
left.SectionCode.Append(MipsGenerationHelper.NewScript()
.Push(MipsRegisterSet.a0));
var right = LessThanTwoVariables.Right.Accept(this);
right.SectionCode.Append(MipsGenerationHelper.NewScript()
.Pop(MipsRegisterSet.t0)
.BranchLessThan(MipsRegisterSet.t0, MipsRegisterSet.a0, else_label)
.LoadConstant(MipsRegisterSet.a0, 0)
.JumpToLabel(end_label)
.Tag(else_label)
.LoadConstant(MipsRegisterSet.a0, 1)
.Tag(end_label));
return(left + right);
}
private MipsProgram CreateString(Register r1, Register r2)
{
string label_info = labelGenerator.GenerateLabelTypeInfo(Types.String);
var result = new MipsProgram();
if (r2 == MipsRegisterSet.t1)
{
if (r1 == MipsRegisterSet.t2)
{
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.Move(MipsRegisterSet.t0, r1)
.Move(MipsRegisterSet.t2, r2)
.Move(MipsRegisterSet.t1, MipsRegisterSet.t0));
}
else
{
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.Move(MipsRegisterSet.t2, r2)
.Move(MipsRegisterSet.t1, r1));
}
}
else
{
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.Move(MipsRegisterSet.t1, r1)
.Move(MipsRegisterSet.t2, r2));
}
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.LoadFromAddress(MipsRegisterSet.t0, label_info)
.LoadFromMemory(MipsRegisterSet.a0, MipsRegisterSet.t0, MipsGenerationHelper.SizeOfOffset)
.Add(MipsRegisterSet.a0, 4)
.Allocate(MipsRegisterSet.a0, MipsRegisterSet.a0)
.SaveToMemory(MipsRegisterSet.t0, MipsRegisterSet.a0)
.Add(MipsRegisterSet.a0, 4)
.SaveToMemory(MipsRegisterSet.t1, MipsRegisterSet.a0)
.SaveToMemory(MipsRegisterSet.t2, MipsRegisterSet.a0, 4));
return(result);
}
public MipsProgram VisitIOInString(ASTCILIOInStringNode IOInString)
{
var tags = labelGenerator.GenerateIf();
var result = new MipsProgram();
result.SectionFunctions.Append(MipsGenerationHelper.NewScript()
.Tag(IOInString.Tag)
.ReadString()
.StringLengthMethod()
.Move(MipsRegisterSet.t0, MipsRegisterSet.a0)
.LoadFromAddress(MipsRegisterSet.a1, MipsGenerationHelper.BufferLabel)
.Add(MipsRegisterSet.a0, 1)
.Allocate(MipsRegisterSet.a0, MipsRegisterSet.a2)
.Copy(MipsRegisterSet.a1, MipsRegisterSet.a2, MipsRegisterSet.a0, tags.end, tags.@else)
.Sub(MipsRegisterSet.a2, 1)
.Sub(MipsRegisterSet.a2, MipsRegisterSet.t0));
result.SectionFunctions.Append(CreateString(MipsRegisterSet.a2, MipsRegisterSet.t0).SectionCode);
result.SectionFunctions.Append(MipsGenerationHelper.NewScript()
.Return());
return(result);
}
