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Add properties to a graph #80

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38 changes: 38 additions & 0 deletions ml.md
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Original file line number Diff line number Diff line change
Expand Up @@ -276,6 +276,44 @@ graph IR in parts (e.g., OpenVINO stores its IR and weights separately).</p>
<ul>
<li><a name="method_graph_init_execution_context.0"></a> result&lt;own&lt;<a href="#graph_execution_context"><a href="#graph_execution_context"><code>graph-execution-context</code></a></a>&gt;, own&lt;<a href="#error"><a href="#error"><code>error</code></a></a>&gt;&gt;</li>
</ul>
<h4><a name="method_graph_list_properties"></a><code>[method]graph.list-properties: func</code></h4>
<p>Retrieve the properties of the graph.</p>
<p>These are metadata about the graph, unique to the graph and the
ML backend providing it.</p>
<h5>Params</h5>
<ul>
<li><a name="method_graph_list_properties.self"></a><code>self</code>: borrow&lt;<a href="#graph"><a href="#graph"><code>graph</code></a></a>&gt;</li>
</ul>
<h5>Return values</h5>
<ul>
<li><a name="method_graph_list_properties.0"></a> list&lt;<code>string</code>&gt;</li>
</ul>
<h4><a name="method_graph_get_property"></a><code>[method]graph.get-property: func</code></h4>
<p>Retrieve the value of a property.</p>
<p>If the property does not exist, this function returns <code>none</code>.</p>
<h5>Params</h5>
<ul>
<li><a name="method_graph_get_property.self"></a><code>self</code>: borrow&lt;<a href="#graph"><a href="#graph"><code>graph</code></a></a>&gt;</li>
<li><a name="method_graph_get_property.name"></a><code>name</code>: <code>string</code></li>
</ul>
<h5>Return values</h5>
<ul>
<li><a name="method_graph_get_property.0"></a> option&lt;<code>string</code>&gt;</li>
</ul>
<h4><a name="method_graph_set_property"></a><code>[method]graph.set-property: func</code></h4>
<p>Modify the value of a property.</p>
<p>If the operation fails, this function returns a string from the ML
backend describing the error.</p>
<h5>Params</h5>
<ul>
<li><a name="method_graph_set_property.self"></a><code>self</code>: borrow&lt;<a href="#graph"><a href="#graph"><code>graph</code></a></a>&gt;</li>
<li><a name="method_graph_set_property.name"></a><code>name</code>: <code>string</code></li>
<li><a name="method_graph_set_property.value"></a><code>value</code>: <code>string</code></li>
</ul>
<h5>Return values</h5>
<ul>
<li><a name="method_graph_set_property.0"></a> result&lt;_, <code>string</code>&gt;</li>
</ul>
<h4><a name="load"></a><code>load: func</code></h4>
<p>Load a <a href="#graph"><code>graph</code></a> from an opaque sequence of bytes to use for inference.</p>
<h5>Params</h5>
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17 changes: 17 additions & 0 deletions wit/wasi-nn.wit
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Expand Up @@ -68,6 +68,23 @@ interface graph {
/// An execution graph for performing inference (i.e., a model).
resource graph {
init-execution-context: func() -> result<graph-execution-context, error>;

/// Retrieve the properties of the graph.
///
/// These are metadata about the graph, unique to the graph and the
/// ML backend providing it.
list-properties: func() -> list<string>;

/// Retrieve the value of a property.
///
/// If the property does not exist, this function returns `none`.
get-property: func(name: string) -> option<string>;

/// Modify the value of a property.
///
/// If the operation fails, this function returns a string from the ML
/// backend describing the error.
set-property: func(name: string, value: string) -> result<_, string>;
}

/// Describes the encoding of the graph. This allows the API to be implemented by various
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