// Возвращает ExpressionTree
public override object VisitVariableInitializer([NotNull] DoshikParser.VariableInitializerContext context)
{
_compilationContext.SetParsingAntlrContext(context);
var expressionCtx = context.expression();
if (expressionCtx != null)
{
var expressionTree = ExpressionCreationVisitor.Apply(_compilationContext, _currentExpressionParent, expressionCtx);
if (_declaringVariable.Type != expressionTree.RootExpression.ReturnOutputSlot.Type)
{
throw _compilationContext.ThrowCompilationError("declaring variable type differs from initialization expression return type");
}
return(expressionTree);
}
else
{
throw _compilationContext.ThrowCompilationError("variables can only be initialized using expressions (no special initializer support yet)");
}
}
/// <summary>
/// Visit a parse tree produced by <see cref="DoshikParser.variableInitializer"/>.
/// <para>
/// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
/// on <paramref name="context"/>.
/// </para>
/// </summary>
/// <param name="context">The parse tree.</param>
/// <return>The visitor result.</return>
public virtual Result VisitVariableInitializer([NotNull] DoshikParser.VariableInitializerContext context)
{
return(VisitChildren(context));
}
/// <summary>
/// Exit a parse tree produced by <see cref="DoshikParser.variableInitializer"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitVariableInitializer([NotNull] DoshikParser.VariableInitializerContext context)
{
}
