public static IEnumerable <SyntaxNode> BuildSetPropertyNode(this RoslynTranslator translator, SetPropertyGroupNodeModel model, IPortModel portModel)
{
SyntaxNode leftHand;
IPortModel instancePort = model.InstancePort;
if (!instancePort.Connected)
{
leftHand = SyntaxFactory.ThisExpression();
}
else
{
leftHand = translator.BuildPort(instancePort).SingleOrDefault();
}
foreach (var member in model.Members)
{
string memberId = member.GetId();
IPortModel inputPort = model.InputsById[memberId];
SyntaxNode rightHandExpression = translator.BuildPort(inputPort).SingleOrDefault();
if (rightHandExpression == null)
{
continue;
}
MemberAccessExpressionSyntax access = RoslynBuilder.MemberReference(leftHand, member.Path[0]);
for (int i = 1; i < member.Path.Count; i++)
{
access = RoslynBuilder.MemberReference(access, member.Path[i]);
}
yield return(SyntaxFactory.AssignmentExpression(SyntaxKind.SimpleAssignmentExpression, access, rightHandExpression as ExpressionSyntax));
}
}
public static IEnumerable <SyntaxNode> BuildSetVariable(this RoslynTranslator translator, SetVariableNodeModel statement, IPortModel portModel)
{
var decl = translator.BuildPort(statement.InstancePort).SingleOrDefault();
var value = translator.BuildPort(statement.ValuePort).SingleOrDefault();
yield return(decl == null || value == null ? null : RoslynBuilder.Assignment(decl, value));
}
public static SyntaxNode SetProperty(RoslynTranslator translator, AssignmentKind kind,
IPortModel instancePortModel, IPortModel valuePortModel, params string[] members)
{
ExpressionSyntax instance = instancePortModel.Connected
? translator.BuildPort(instancePortModel).FirstOrDefault() as ExpressionSyntax
: SyntaxFactory.ThisExpression();
ExpressionSyntax value = translator.BuildPort(valuePortModel).FirstOrDefault() as ExpressionSyntax;
return(SetProperty(kind, instance, value, members));
}
public static IEnumerable <SyntaxNode> BuildMacroRefNode(this RoslynTranslator translator,
MacroRefNodeModel model, IPortModel portModel)
{
if (model.Macro == null)
{
translator.AddError(
model,
$"The asset of macro node {model.Title} is missing.");
return(Enumerable.Empty <SyntaxNode>());
}
var variableDeclarations = portModel.Direction == Direction.Input
? model.DefinedInputVariables
: model.DefinedOutputVariables;
var declaration = variableDeclarations.Single(v => v.VariableName == portModel.UniqueId);
translator.InMacro.Push(model);
var variableNodeModel = ((VSGraphModel)declaration.GraphModel)
.FindUsages((VariableDeclarationModel)declaration)
.Single();
var returnValue = translator.BuildPort(variableNodeModel.OutputPort);
translator.InMacro.Pop();
return(returnValue);
}
public static IEnumerable <SyntaxNode> BuildIfCondition(this RoslynTranslator translator, IfConditionNodeModel statement, IPortModel portModel)
{
// this enables more elegant code generation with no duplication
// if() { then(); } else { else(); }
// codeAfterIf();
// instead of duplicating the code after the if in each branch
// find first stack reachable from both then/else stacks
var firstThenStack = RoslynTranslator.GetConnectedStack(statement, 0);
var firstElseStack = RoslynTranslator.GetConnectedStack(statement, 1);
var endStack = RoslynTranslator.FindCommonDescendant(statement.ParentStackModel, firstThenStack, firstElseStack);
if (endStack != null)
{
// building the branches will stop at the common descendant
translator.EndStack = endStack;
// Debug.Log($"If in stack {statement.parentStackModel} Common descendant: {endStack}");
}
// ie. follow outputs, find all stacks with multiple inputs, compare them until finding the common one if it exists
// BuildStack checks the m_EndStack field, returning when recursing on it
// the parent buildStack call will then continue on this end stack
var origBuiltStacks = translator.BuiltStacks;
translator.BuiltStacks = new HashSet <IStackModel>(origBuiltStacks);
HashSet <IStackModel> partialStacks = new HashSet <IStackModel>();
StatementSyntax syntax = null;
// construct multiple if else if else ... from right to left, starting with the last else
foreach (var conditionWithAction in statement.ConditionsWithActionsPorts.Reverse())
{
var stack = RoslynTranslator.GetConnectedStack(conditionWithAction.Action);
BlockSyntax block = SyntaxFactory.Block();
if (endStack == null || endStack != stack) // stop before the end stack
{
translator.BuildStack(stack, ref block, StackExitStrategy.Inherit);
}
if (conditionWithAction.Condition == null) // last else
{
syntax = block;
}
else // if = if() { current statement } else { prev statement that might be an if }
{
var condition = (ExpressionSyntax)translator.BuildPort(conditionWithAction.Condition).SingleOrDefault();
syntax = SyntaxFactory.IfStatement(condition, block)
.WithElse(SyntaxFactory.ElseClause(syntax));
}
partialStacks.UnionWith(translator.BuiltStacks);
translator.BuiltStacks = new HashSet <IStackModel>(origBuiltStacks);
}
translator.BuiltStacks = partialStacks;
yield return(syntax);
}
public static SyntaxNode GetProperty(RoslynTranslator translator, IPortModel instancePortModel,
params string[] members)
{
ExpressionSyntax instance = instancePortModel.Connected
? translator.BuildPort(instancePortModel).FirstOrDefault() as ExpressionSyntax
: SyntaxFactory.ThisExpression();
return(GetProperty(instance, members));
}
public static IEnumerable <SyntaxNode> BuildUnaryOperator(this RoslynTranslator translator, UnaryOperatorNodeModel model, IPortModel portModel)
{
var semantic = model.Kind == UnaryOperatorKind.PostDecrement ||
model.Kind == UnaryOperatorKind.PostIncrement
? RoslynTranslator.PortSemantic.Write
: RoslynTranslator.PortSemantic.Read;
yield return(RoslynBuilder.UnaryOperator(model.Kind, translator.BuildPort(model.InputPort, semantic).SingleOrDefault()));
}
public static IEnumerable <SyntaxNode> BuildReturn(this RoslynTranslator translator, ReturnNodeModel returnModel, IPortModel portModel)
{
if (returnModel.InputPort == null)
{
yield return(SyntaxFactory.ReturnStatement());
}
else
{
yield return(SyntaxFactory.ReturnStatement(
translator.BuildPort(returnModel.InputPort).FirstOrDefault() as ExpressionSyntax));
}
}
public static IEnumerable <SyntaxNode> BuildReturn(this RoslynTranslator translator, ReturnNodeModel returnModel, IPortModel portModel)
{
if (returnModel.ParentStackModel.OwningFunctionModel.ReturnType == typeof(void).GenerateTypeHandle(translator.Stencil))
{
yield return(SyntaxFactory.ReturnStatement());
}
else
{
yield return(SyntaxFactory.ReturnStatement(
translator.BuildPort(returnModel.InputPort).FirstOrDefault() as ExpressionSyntax));
}
}
public static IEnumerable <SyntaxNode> BuildVariable(this RoslynTranslator translator, IVariableModel v, IPortModel portModel)
{
if (v is IConstantNodeModel constantNodeModel)
{
if (constantNodeModel.ObjectValue != null)
{
if (constantNodeModel is IStringWrapperConstantModel)
{
yield return(translator.Constant(constantNodeModel.ObjectValue.ToString(), translator.Stencil));
}
else
{
yield return(translator.Constant(constantNodeModel.ObjectValue, translator.Stencil));
}
}
yield break;
}
if (translator.InMacro.Count > 0 && v.DeclarationModel.VariableType == VariableType.GraphVariable && v.DeclarationModel.Modifiers == ModifierFlags.ReadOnly)
{
MacroRefNodeModel oldValue = translator.InMacro.Pop();
var syntaxNodes = translator.BuildPort(oldValue.InputsById[v.DeclarationModel.VariableName]);
translator.InMacro.Push(oldValue);
foreach (var syntaxNode in syntaxNodes)
{
yield return(syntaxNode);
}
yield break;
}
switch (v.DeclarationModel.VariableType)
{
case VariableType.FunctionVariable:
case VariableType.GraphVariable:
case VariableType.ComponentQueryField:
yield return(RoslynBuilder.LocalVariableReference(v.DeclarationModel.Name));
break;
case VariableType.FunctionParameter:
yield return(RoslynBuilder.ArgumentReference(v.DeclarationModel.Name));
break;
// case VariableType.Literal:
// case VariableType.InlineExpression:
default:
throw new ArgumentOutOfRangeException();
}
}
static ExpressionSyntax BuildArgumentList(RoslynTranslator translator, IFunctionCallModel call, out List <ArgumentSyntax> argumentList)
{
ExpressionSyntax instance = null;
if (call is IHasInstancePort modelWithInstancePort && modelWithInstancePort.InstancePort != null)
{
instance = (ExpressionSyntax)translator.BuildPort(modelWithInstancePort.InstancePort).SingleOrDefault();
}
argumentList = new List <ArgumentSyntax>();
foreach (IPortModel port in call.GetParameterPorts())
{
var syntaxNode = translator.BuildPort(port).SingleOrDefault();
if (syntaxNode != null)
{
var argumentNode = syntaxNode as ArgumentSyntax ?? SyntaxFactory.Argument(syntaxNode as ExpressionSyntax);
argumentList.Add(argumentNode);
}
}
return(instance);
}
public static IEnumerable <SyntaxNode> BuildMethod(this RoslynTranslator roslynTranslator, KeyDownEventModel stack, IPortModel portModel)
{
BlockSyntax block = SyntaxFactory.Block();
roslynTranslator.BuildStack(stack, ref block);
string methodName;
switch (stack.mode)
{
case KeyDownEventModel.EventMode.Pressed:
methodName = nameof(Input.GetKeyDown);
break;
case KeyDownEventModel.EventMode.Released:
methodName = nameof(Input.GetKeyUp);
break;
default:
methodName = nameof(Input.GetKey);
break;
}
var conditionExpression = (ExpressionSyntax)roslynTranslator.BuildPort(stack.KeyPort).Single();
IfStatementSyntax keydownCheck = (SyntaxFactory.IfStatement(
SyntaxFactory.InvocationExpression(
SyntaxFactory.MemberAccessExpression(
SyntaxKind.SimpleMemberAccessExpression,
SyntaxFactory.IdentifierName(nameof(Input)),
SyntaxFactory.IdentifierName(methodName)))
.WithArgumentList(
SyntaxFactory.ArgumentList(
SyntaxFactory.SingletonSeparatedList(
SyntaxFactory.Argument(
conditionExpression)))),
block)
.NormalizeWhitespace());
roslynTranslator.AddEventRegistration(keydownCheck);
yield break;
}
public static IEnumerable <SyntaxNode> BuildWhile(this RoslynTranslator translator, WhileHeaderModel whileHeaderModelStatement, IPortModel portModel)
{
if (whileHeaderModelStatement.IndexVariableDeclarationModel != null)
{
yield return(whileHeaderModelStatement.IndexVariableDeclarationModel.DeclareLoopIndexVariable());
}
var whileBlock = SyntaxFactory.Block();
foreach (var localDeclaration in BuildLocalDeclarations(translator, whileHeaderModelStatement))
{
whileBlock = whileBlock.AddStatements(localDeclaration);
}
translator.BuildStack(whileHeaderModelStatement, ref whileBlock, StackExitStrategy.Continue);
IPortModel loopExecutionInputPortModel = whileHeaderModelStatement.InputPort;
IPortModel insertLoopPortModel = loopExecutionInputPortModel?.ConnectionPortModels?.FirstOrDefault();
var insertLoopNodeModel = insertLoopPortModel?.NodeModel as IHasMainInputPort;
IPortModel conditionInputPortModel = insertLoopNodeModel?.InputPort;
SeparatedSyntaxList <ExpressionSyntax> incrementExpressions = SyntaxFactory.SeparatedList <ExpressionSyntax>();
if (whileHeaderModelStatement.IndexVariableDeclarationModel != null)
{
incrementExpressions =
SyntaxFactory.SingletonSeparatedList <ExpressionSyntax>(
SyntaxFactory.PostfixUnaryExpression(
SyntaxKind.PostIncrementExpression,
SyntaxFactory.IdentifierName(whileHeaderModelStatement.IndexVariableDeclarationModel.name)));
}
yield return(SyntaxFactory.ForStatement(null, SyntaxFactory.SeparatedList <ExpressionSyntax>(),
translator.BuildPort(conditionInputPortModel).SingleOrDefault() as ExpressionSyntax,
incrementExpressions,
whileBlock));
}
public static IEnumerable <SyntaxNode> BuildUnaryOperator(this RoslynTranslator translator, UnaryOperatorNodeModel model, IPortModel portModel)
{
yield return(RoslynBuilder.UnaryOperator(model.kind, translator.BuildPort(model.InputPort).SingleOrDefault()));
}
public static IEnumerable <SyntaxNode> BuildGetPropertyNode(this RoslynTranslator translator, GetPropertyGroupNodeModel model, IPortModel portModel)
{
var instancePort = model.InstancePort;
var input = !instancePort.Connected ? SyntaxFactory.ThisExpression() : translator.BuildPort(instancePort).SingleOrDefault();
if (input == null)
{
yield break;
}
var member = model.Members.FirstOrDefault(m => m.GetId() == portModel.UniqueId);
if (member.Path == null || member.Path.Count == 0)
{
yield break;
}
var access = RoslynBuilder.MemberReference(input, member.Path[0]);
for (int i = 1; i < member.Path.Count; i++)
{
access = RoslynBuilder.MemberReference(access, member.Path[i]);
}
yield return(access);
}
public static IEnumerable <SyntaxNode> BuildForEach(this RoslynTranslator translator, ForEachHeaderModel forEachHeaderModelStatement,
IPortModel portModel)
{
IPortModel loopExecutionInputPortModel = forEachHeaderModelStatement.InputPort;
IPortModel insertLoopPortModel = loopExecutionInputPortModel?.ConnectionPortModels?.FirstOrDefault();
var insertLoopNodeModel = insertLoopPortModel?.NodeModel as IHasMainInputPort;
IPortModel collectionInputPortModel = insertLoopNodeModel?.InputPort;
if (collectionInputPortModel == null || !collectionInputPortModel.Connected ||
!collectionInputPortModel.DataType.IsVsArrayType(translator.Stencil))
{
yield break;
}
var collectionName = translator.MakeUniqueName("Collection");
SyntaxNode collectionSyntax =
translator.BuildPort(collectionInputPortModel).SingleOrDefault();
yield return(RoslynBuilder.DeclareLoopCollectionVariable(collectionSyntax, collectionName));
if (forEachHeaderModelStatement.IndexVariableDeclarationModel != null)
{
yield return(forEachHeaderModelStatement.IndexVariableDeclarationModel.DeclareLoopIndexVariable(-1));
}
if (forEachHeaderModelStatement.CountVariableDeclarationModel != null)
{
var collectionInput =
translator.BuildPort(collectionInputPortModel).SingleOrDefault() as ExpressionSyntax;
yield return(forEachHeaderModelStatement.CountVariableDeclarationModel.DeclareLoopCountVariable(
collectionInput,
collectionName,
translator));
}
var forEachBlock = SyntaxFactory.Block();
foreach (var localDeclaration in BuildLocalDeclarations(translator, forEachHeaderModelStatement))
{
forEachBlock = forEachBlock.AddStatements(localDeclaration);
}
if (forEachHeaderModelStatement.IndexVariableDeclarationModel != null)
{
forEachBlock = forEachBlock.AddStatements(SyntaxFactory.ExpressionStatement(
SyntaxFactory.PostfixUnaryExpression(
SyntaxKind.PostIncrementExpression,
SyntaxFactory.IdentifierName(forEachHeaderModelStatement.IndexVariableDeclarationModel.name)))
);
}
translator.BuildStack(forEachHeaderModelStatement, ref forEachBlock, StackExitStrategy.Continue);
var itemModel = forEachHeaderModelStatement.ItemVariableDeclarationModel;
if (itemModel == null)
{
yield break;
}
yield return(SyntaxFactory.ForEachStatement(
SyntaxFactory.IdentifierName("var"),
SyntaxFactory.Identifier(itemModel.VariableName),
SyntaxFactory.IdentifierName(collectionName),
forEachBlock));
}
