public VariableParameter(string name, string documentation, VariableType variableType, VariableResolveOptions options = null) : base(name, documentation)
{
if (variableType == VariableType.ElementReference)
{
throw new Exception("Only the variable types Dynamic, Global, and Player is valid.");
}
VariableType = variableType;
Options = options ?? new VariableResolveOptions();
}
public VariableResolve(VariableResolveOptions options, IExpression expression, DocRange expressionRange, FileDiagnostics diagnostics)
{
// The expression is a variable.
if (expression is CallVariableAction)
{
// Get the variable being set and the range.
SetVariable = (CallVariableAction)expression;
VariableRange = expressionRange;
}
// The expression is an expression tree.
else if (expression is ExpressionTree tree)
{
Tree = tree;
if (tree.Completed)
{
// If the resulting expression in the tree is not a variable.
if (tree.Result is CallVariableAction == false)
{
NotAVariableRange = tree.ExprContextTree.Last().GetRange();
}
else
{
// Get the variable and the range.
SetVariable = (CallVariableAction)tree.Result;
VariableRange = tree.ExprContextTree.Last().GetRange();
}
}
}
// The expression is not a variable.
else if (expression != null)
{
NotAVariableRange = expressionRange;
}
// NotAVariableRange will not be null if the resulting expression is a variable.
if (NotAVariableRange != null)
{
diagnostics.Error("Expected a variable.", NotAVariableRange);
}
// Make sure the variable can be set to.
if (SetVariable != null)
{
// Check if the variable is settable.
if (options.ShouldBeSettable && !SetVariable.Calling.Settable())
{
diagnostics.Error($"The variable '{SetVariable.Calling.Name}' cannot be set to.", VariableRange);
}
// Check if the variable is a whole workshop variable.
if (options.FullVariable)
{
Var asVar = SetVariable.Calling as Var;
if (asVar == null || asVar.StoreType != StoreType.FullVariable)
{
diagnostics.Error($"The variable '{SetVariable.Calling.Name}' cannot be indexed.", VariableRange);
}
}
// Check for indexers.
if (!options.CanBeIndexed && SetVariable.Index.Length != 0)
{
diagnostics.Error($"The variable '{SetVariable.Calling.Name}' cannot be indexed.", VariableRange);
}
}
DoesResolveToVariable = SetVariable != null;
}
public VariableResolve(ParseInfo parseInfo, VariableResolveOptions options, IExpression expression, DocRange expressionRange, IVariableResolveErrorHandler errorHandler)
{
bool treeSettable = true;
// The expression is a variable.
if (expression is CallVariableAction)
{
// Get the variable being set and the range.
SetVariable = (CallVariableAction)expression;
VariableRange = expressionRange;
}
// The expression is an expression tree.
else if (expression is ExpressionTree tree)
{
Tree = tree;
if (tree.Completed)
{
// If the resulting expression in the tree is not a variable.
if (tree.Result is CallVariableAction == false)
{
NotAVariableRange = tree.ExprContextTree.Last().GetRange();
}
else
{
// Get the variable and the range.
SetVariable = (CallVariableAction)tree.Result;
VariableRange = tree.ExprContextTree.Last().GetRange();
treeSettable = tree.TargetCanBeSet();
}
}
}
// The expression is not a variable.
else if (expression != null)
{
NotAVariableRange = expressionRange;
}
// NotAVariableRange will not be null if the resulting expression is a variable.
if (NotAVariableRange != null)
{
errorHandler.Error("Expected a variable.", NotAVariableRange);
}
// Make sure the variable can be set to.
if (SetVariable != null)
{
// Check if the variable is settable.
if (options.ShouldBeSettable)
{
// The variable can never be set.
if (!SetVariable.Calling.Attributes.CanBeSet)
{
errorHandler.Error($"The variable '{SetVariable.Calling.Name}' cannot be set", VariableRange);
}
// The variable is normally settable, but not in the current context.
else if (!treeSettable || (parseInfo.ContextualVariableModifiers != null && !parseInfo.ContextualVariableModifiers.IsSettable(SetVariable.Calling)))
{
errorHandler.Error($"The variable '{SetVariable.Calling.Name}' cannot be set in the current context", VariableRange);
}
}
// Check if the variable is a whole workshop variable.
else if ((options.FullVariable && SetVariable.Calling.Attributes.StoreType != StoreType.FullVariable) || (!options.CanBeIndexed && SetVariable.Index.Length != 0))
{
errorHandler.Error($"The variable '{SetVariable.Calling.Name}' cannot be indexed", VariableRange);
}
}
DoesResolveToVariable = SetVariable != null;
}
public VariableParameter(string name, string documentation, VariableResolveOptions options = null) : base(name, documentation)
{
VariableType = VariableType.Dynamic;
Options = options ?? new VariableResolveOptions();
}
public VariableResolve(ParseInfo parseInfo, VariableResolveOptions options, IExpression expression, DocRange expressionRange)
: this(parseInfo, options, expression, expressionRange, new VariableResolveErrorHandler(parseInfo.Script.Diagnostics))
{
}