# `GSFont parseContextKey:`

*Type Method*

Parses a contextual kerning key into glyph tokens and class tokens.

## Declaration

```swift
class func parseContextKey(_ str: String) -> [Any]
```

```objc
+ (NSArray *) parseContextKey:(NSString *) str;
```

```python
parseContextKey_(str: str) -> list
```

## Discussion

Class tokens are returned as nested arrays.

## See Also

### Contextual Kerning

- [`GSFont.kerningContext`](/Core/GlyphsCore/GSFont/kerningContext) — Contextual kerning data.
- [`GSFont contextKerningForKey:fontMasterID:`](/Core/GlyphsCore/GSFont/contextKerningForKey:fontMasterID:) — Contextual kerning value for a context key and master, or `NSNotFound` when no value is stored.
- [`GSFont setContextKerningForKey:fontMasterID:value:`](/Core/GlyphsCore/GSFont/setContextKerningForKey:fontMasterID:value:) — Sets the contextual kerning value for a context key and master.
- [`GSFont removeContextKerningForKey:fontMasterID:`](/Core/GlyphsCore/GSFont/removeContextKerningForKey:fontMasterID:) — Removes the contextual kerning value for a context key and master.
- [`GSFont replaceContextKerningKey:key:`](/Core/GlyphsCore/GSFont/replaceContextKerningKey:key:) — Replaces a context key while keeping its master values.