public ASTCILNode VisitLetIn(ASTLetInNode LetIn)
{
return(new ASTCILBlockNode(LetIn.Declarations.SelectMany(x =>
{
ASTCILExpressionNode expression;
compilationUnit.TypeEnvironment.GetTypeDefinition(x.Type.Text, LetIn.SymbolTable, out var type);
if (x.Expression != null)
{
expression = (ASTCILExpressionNode)x.Expression.Accept(this);
}
else if (x.Type.Text == Types.Bool)
{
expression = new ASTCILBoolConstantNode(false);
}
else if (x.Type.Text == Types.Int)
{
expression = new ASTCILIntConstantNode(0);
}
else if (x.Type.Text == Types.String)
{
expression = new ASTCILStringConstantNode("", labelIlGenerator.GenerateEmptyStringData());
}
else
{
expression = new ASTCILVoidNode();
}
return new ASTCILExpressionNode[]
{
new ASTCILAssignmentNode(x.Id, expression)
};
}).Append((ASTCILExpressionNode)LetIn.LetExp.Accept(this))));
}
public MipsProgram VisitIntConstant(ASTCILIntConstantNode IntConstant)
{
var result = new MipsProgram();
result.SectionCode.Append(MipsGenerationHelper.NewScript()
.LoadConstant(MipsRegisterSet.a0, IntConstant.Value));
return(result);
}
