public override Node VisitFor(DeltinScriptParser.ForContext context)
{
BlockNode block = (BlockNode)VisitBlock(context.block());
VarSetNode varSet = null;
if (context.varset() != null)
{
varSet = (VarSetNode)VisitVarset(context.varset());
}
DefineNode defineNode = null;
if (context.define() != null)
{
defineNode = (DefineNode)VisitDefine(context.define());
}
Node expression = null;
if (context.expr() != null)
{
expression = VisitExpr(context.expr());
}
VarSetNode statement = null;
if (context.forEndStatement() != null)
{
statement = (VarSetNode)VisitVarset(context.forEndStatement().varset());
}
return(new ForNode(varSet, defineNode, expression, statement, block, new Location(file, Range.GetRange(context))));
}
public ForNode(VarSetNode varSetNode, ScopedDefineNode defineNode, IExpressionNode expression, IStatementNode statement, BlockNode block, Range range) : base(range)
{
VarSetNode = varSetNode;
DefineNode = defineNode;
Expression = expression;
Statement = statement;
Block = block;
}
public ForNode(VarSetNode varSetNode, DefineNode defineNode, Node expression, VarSetNode statement, BlockNode block, Location location) : base(location)
{
VarSetNode = varSetNode;
DefineNode = defineNode;
Expression = expression;
Statement = statement;
Block = block;
}
void ParseVarset(ScopeGroup scope, VarSetNode varSetNode)
{
DefinedVar variable = scope.GetVar(varSetNode.Variable, varSetNode.Range, Diagnostics);
Element target = null;
if (varSetNode.Target != null)
{
target = ParseExpression(scope, varSetNode.Target);
}
Element value = ParseExpression(scope, varSetNode.Value);
Element initialVar = variable.GetVariable(target);
Element index = null;
if (varSetNode.Index != null)
{
index = ParseExpression(scope, varSetNode.Index);
initialVar = Element.Part <V_ValueInArray>(initialVar, index);
}
switch (varSetNode.Operation)
{
case "+=":
value = Element.Part <V_Add>(initialVar, value);
break;
case "-=":
value = Element.Part <V_Subtract>(initialVar, value);
break;
case "*=":
value = Element.Part <V_Multiply>(initialVar, value);
break;
case "/=":
value = Element.Part <V_Divide>(initialVar, value);
break;
case "^=":
value = Element.Part <V_RaiseToPower>(initialVar, value);
break;
case "%=":
value = Element.Part <V_Modulo>(initialVar, value);
break;
}
Actions.Add(variable.SetVariable(value, target, index));
}
public override Node VisitFor(DeltinScriptParser.ForContext context)
{
Node node;
BlockNode block = (BlockNode)VisitBlock(context.block());
if (context.IN() != null)
{
IExpressionNode array = (IExpressionNode)Visit(context.expr());
string variable = context.PART().GetText();
node = new ForEachNode(variable, array, block, Range.GetRange(context));
}
else
{
VarSetNode varSet = null;
if (context.varset() != null)
{
varSet = (VarSetNode)VisitVarset(context.varset());
}
ScopedDefineNode defineNode = null;
if (context.define() != null)
{
defineNode = (ScopedDefineNode)VisitDefine(context.define());
}
IExpressionNode expression = null;
if (context.expr() != null)
{
expression = (IExpressionNode)VisitExpr(context.expr());
}
IStatementNode statement = null;
if (context.statement() != null)
{
statement = (IStatementNode)VisitStatement(context.statement());
}
node = new ForNode(varSet, defineNode, expression, statement, block, Range.GetRange(context));
}
CheckRange(node);
return(node);
}
public override Node VisitVarset(DeltinScriptParser.VarsetContext context)
{
IExpressionNode target = context.expr().Length == 2 ? (IExpressionNode)Visit(context.expr()[0]) : null;
string variable = context.PART().GetText();
IExpressionNode index = null;
if (context.array() != null)
{
index = (IExpressionNode)Visit(context.array().expr());
}
string operation = context.statement_operation().GetText();
IExpressionNode value = (IExpressionNode)Visit(context.expr().Last());
Node node = new VarSetNode(target, variable, index, operation, value, Range.GetRange(context));
CheckRange(node);
return(node);
}
void ParseVarset(ScopeGroup getter, ScopeGroup scope, VarSetNode varSetNode)
{
var varSetData = new ParseExpressionTree(this, getter, scope, varSetNode.Variable);
if (!(varSetData.ResultingVariable is IndexedVar))
{
throw SyntaxErrorException.VariableIsReadonly(varSetData.ResultingVariable.Name, varSetNode.Location);
}
IndexedVar variable = (IndexedVar)varSetData.ResultingVariable;
Element[] index = varSetData.VariableIndex;
Element value = null;
if (varSetNode.Value != null)
{
value = ParseExpression(getter, scope, varSetNode.Value);
}
Element initialVar = variable.GetVariable(varSetData.Target);
Operation?operation = null;
switch (varSetNode.Operation)
{
case "+=":
operation = Operation.Add;
break;
case "-=":
operation = Operation.Subtract;
break;
case "*=":
operation = Operation.Multiply;
break;
case "/=":
operation = Operation.Divide;
break;
case "^=":
operation = Operation.RaiseToPower;
break;
case "%=":
operation = Operation.Modulo;
break;
case "++":
operation = Operation.Add;
value = 1;
break;
case "--":
operation = Operation.Subtract;
value = 1;
break;
}
if (operation == null)
{
Actions.AddRange(variable.SetVariable(value, varSetData.Target, index));
}
else
{
Actions.AddRange(variable.ModifyVariable((Operation)operation, value, varSetData.Target, index));
}
}
