public override void Execute(ScriptRuntimeContext context)
{
if (context.VariableExists(identifier))
{
//You cannot declare a local variable to shadow an existing global
throw new ScriptRuntimeException($"Variable already declared in this context: {identifier}");
}
object defaultValue;
if (initializer == null)
{
defaultValue = valueType.GetDefaultValue();
}
else
{
defaultValue = initializer.GetAs <object>(context);
if (!valueType.IsAssignableFrom(initializer.GetValueType()))
{
defaultValue = Convert.ChangeType(defaultValue, valueType);
}
}
context.DeclareVariable(identifier, valueType, defaultValue);
}
/// <summary>
/// Creates declared variables in the script context
/// </summary>
/// <param name="context"></param>
/// <exception cref="ScriptRuntimeException"></exception>
public ScriptRuntimeContext PrepareScript(GlobalRuntimeContext context)
{
ScriptRuntimeContext scriptContext = new ScriptRuntimeContext(context, this);
foreach (ScriptDeclaration declaration in scriptDeclarations)
{
declaration.Execute(scriptContext);
}
return(scriptContext);
}
/// <summary>
/// Executes the named function
/// </summary>
/// <exception cref="ScriptRuntimeException"></exception>
public void ExecuteFunction(
string functionName,
ScriptRuntimeContext context,
params object[] arguments)
{
if (!scriptFunctions.ContainsKey(functionName))
{
throw new ScriptRuntimeException($"Unable to find function {functionName} for external invocation.");
}
scriptFunctions[functionName].Execute(context, arguments);
}
public override void Execute(ScriptRuntimeContext context)
{
if (context.VariableExists(identifier))
{
throw new ScriptRuntimeException($"Variable already declared in this context: {identifier}");
}
if (context.GlobalVariableExists(identifier))
{
//Adding an indirect reference to the existing variable
context.DeclareExistingGlobal(identifier, valueType);
//Not running initialization because it exists
return;
}
if (IsExtern)
{
throw new ScriptRuntimeException($"Extern Variable does not already exist: {identifier}");
}
object defaultValue;
if (initializer == null)
{
defaultValue = valueType.GetDefaultValue();
}
else
{
defaultValue = initializer.GetAs <object>(context);
if (!valueType.IsAssignableFrom(initializer.GetValueType()))
{
defaultValue = Convert.ChangeType(defaultValue, valueType);
}
}
context.DeclareNewGlobal(identifier, valueType, defaultValue);
}
public FunctionRuntimeContext(
ScriptRuntimeContext scriptContext,
in FunctionSignature functionSignature,
public abstract void Execute(ScriptRuntimeContext context);
