# Class DefaultAutocompleter

OptimaJet.Workflow.Core.Runtime.CodeAutocomplete.DefaultAutocompleter

Provides the default [ICodeAutocompleter](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.CodeAutocomplete/ICodeAutocompleter/) implementation.

Namespace: [OptimaJet.Workflow.Core.Runtime.CodeAutocomplete](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.CodeAutocomplete/)

```csharp
public class DefaultAutocompleter : ICodeAutocompleter
```

## Type Hierarchy

-   DefaultAutocompleter Current type
    -   Implemented interfaces
        -   [ICodeAutocompleter](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.CodeAutocomplete/ICodeAutocompleter/)

## Constructors

`public DefaultAutocompleter(Action<Exception, string> log)` 

Initializes a new instance of [DefaultAutocompleter](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.CodeAutocomplete/DefaultAutocompleter/) with a default type searcher.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `log` | `Action<Exception, String>` | Logging callback used for non-fatal autocomplete errors. |

`public DefaultAutocompleter(Action<Exception, string> log, ITypeSearcher typeSearcher)` 

Initializes a new instance of [DefaultAutocompleter](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.CodeAutocomplete/DefaultAutocompleter/).

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `log` | `Action<Exception, String>` | Logging callback used for non-fatal autocomplete errors. |
| `typeSearcher` | `ITypeSearcher` | Type searcher used to discover and resolve CLR types. |

## Properties

`public string AutocompleterName { get; }` 

Gets the name that identifies the default autocompleter.

`public bool Initialized { get; }` 

Gets a value indicating whether initialization has completed.

## Methods

`public HashSet<AutocompleteItem> Get(string pattern, IEnumerable<string> usings, IEnumerable<AutocompleteVariable> variables)` 

Gets autocomplete items that match the specified pattern.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `pattern` | `String` | Text to search for, for example `System.Thr`. |
| `usings` | `IEnumerable<String>` | Active namespace prefixes used for resolution. |
| `variables` | `IEnumerable<AutocompleteVariable>` | Context variables to include in completion results. |

### Returns

| Type | Description |
| --- | --- |
| `HashSet<AutocompleteItem>` | A set of matching [AutocompleteItem](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.CodeAutocomplete/AutocompleteItem/) instances. |

`public void InitIfNotInitialized()` 

Initializes the autocompleter lazily and performs one-time root setup.

### Remarks

The method is guarded by a lock and can be called multiple times safely.

`public void AddVariables(IEnumerable<AutocompleteVariable> variables)` 

Adds variables to the autocompleter root.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `variables` | `IEnumerable<AutocompleteVariable>` | Variables to add to available completion candidates. |

## Fields

`public static string DefaultAutocompleterName` 

Default autocompleter name.

## Remarks

Call [DefaultAutocompleter.InitIfNotInitialized()](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.CodeAutocomplete/DefaultAutocompleter/) before calling [DefaultAutocompleter.Get(string, IEnumerable<string>, IEnumerable<AutocompleteVariable>)](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.CodeAutocomplete/DefaultAutocompleter/) or [DefaultAutocompleter.AddVariables(IEnumerable<AutocompleteVariable>)](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.CodeAutocomplete/DefaultAutocompleter/) so the autocomplete tree is built before use.

[Previous CodeAutocompleteProvider](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.CodeAutocomplete/CodeAutocompleteProvider/) [Next ICodeAutocompleteProvider](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Runtime.CodeAutocomplete/ICodeAutocompleteProvider/)