internal ModuleFlag(MDNode node)
{
node.ValidateNotNull(nameof(node));
if (node.Operands.Count != 3)
{
throw new ArgumentException(Resources.Expected_node_with_3_operands, nameof(node));
}
if (!(node.Operands[0] is ConstantAsMetadata behavior))
{
throw new ArgumentException(Resources.Expected_ConstantAsMetadata_for_first_operand, nameof(node));
}
if (!(behavior.Constant is ConstantInt behaviorConst))
{
throw new ArgumentException(Resources.Expected_ConstantInt_wrapped_in_first_operand, nameof(node));
}
if (!(node.Operands[1] is MDString nameMd))
{
throw new ArgumentException(Resources.Expected_MDString_as_second_operand, nameof(node));
}
Behavior = ( ModuleFlagBehavior )(behaviorConst.ZeroExtendedValue);
Name = nameMd.ToString( );
Metadata = node.Operands[2] !;
}
public MDNode this[int index]
{
get
{
index.ValidateRange(0, Count, nameof(index));
var nodeHanlde = LibLLVMNamedMDNodeGetOperand(OwningNode.NativeHandle, ( uint )index);
return(LlvmMetadata.FromHandle <MDNode>(OwningNode.ParentModule.Context, nodeHanlde.ThrowIfInvalid( )) !);
}
set
{
index.ValidateRange(0, Count, nameof(index));
LibLLVMNamedMDNodeSetOperand(OwningNode.NativeHandle, ( uint )index, value.MetadataHandle);
}
}
/// <summary>Replace all uses of this descriptor with another</summary>
/// <param name="other">New descriptor to replace this one with</param>
public virtual void ReplaceAllUsesWith(LlvmMetadata other)
{
if (other == null)
{
throw new ArgumentNullException(nameof(other));
}
if (MetadataHandle == default)
{
throw new InvalidOperationException(Resources.Cannot_Replace_all_uses_of_a_null_descriptor);
}
LLVMMetadataReplaceAllUsesWith(MetadataHandle, other.MetadataHandle);
MetadataHandle = default;
}
/// <summary>Replace all uses of this node with a new node</summary>
/// <param name="other">Node to replace this one with</param>
public override void ReplaceAllUsesWith(LlvmMetadata other)
{
other.ValidateNotNull(nameof(other));
if (!IsTemporary || IsResolved)
{
throw new InvalidOperationException(Resources.Cannot_replace_non_temporary_or_resolved_MDNode);
}
if (MetadataHandle == default)
{
throw new InvalidOperationException(Resources.Cannot_Replace_all_uses_of_a_null_descriptor);
}
// grab the context before replacement as replace deletes and invalidates the node
var context = Context;
LLVMMetadataReplaceAllUsesWith(MetadataHandle, other.MetadataHandle);
// remove current node mapping from the context.
// It won't be valid for use after clearing the handle
context !.RemoveDeletedNode(this);
MetadataHandle = default;
}
/// <summary>Initializes a new instance of the <see cref="ModuleFlag"/> class.</summary>
/// <param name="behavior">Behavior for the flag</param>
/// <param name="name">Name of the flag</param>
/// <param name="metadata">Metadata for the flag</param>
public ModuleFlag(ModuleFlagBehavior behavior, string name, LlvmMetadata metadata)
{
Behavior = behavior;
Name = name;
Metadata = metadata;
}
