61 lines
1.6 KiB
Markdown
61 lines
1.6 KiB
Markdown
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# glsl-token-scope
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[](http://github.com/badges/stability-badges)
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Infer the scope of each token in an array of GLSL tokens.
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## Usage
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[](https://nodei.co/npm/glsl-token-scope/)
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### `scope(tokens)`
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Where `tokens` is an array of tokens returned from
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[`glsl-tokenizer`](http://github.com/stackgl/glsl-tokenizer). Each token will
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be modified in-place, and given `scope` and `stack` properties.
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`token.scope` is a unique number for the token's current scope.
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`token.stack` is an array containing the scopes available to the current token.
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Note that you must first determine the scope depth of each token using
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[`glsl-token-depth`](http://github.com/stackgl/glsl-token-depth)
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``` javascript
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var tokenize = require('glsl-tokenizer/string')
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var depth = require('glsl-token-depth')
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var scope = require('glsl-token-scope')
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var fs = require('fs')
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var src = fs.readFileSync('shader.frag', 'utf8')
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var tokens = tokenize(src)
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depth(tokens)
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scope(tokens)
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tokens[0].scope // 0
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tokens[1].scope // 0
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tokens[2].scope // 1
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tokens[3].scope // 1
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tokens[4].scope // 0
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tokens[5].scope // 2
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// ...
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tokens[0].stack // [0]
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tokens[1].stack // [0]
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tokens[2].stack // [0, 1]
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tokens[3].stack // [0, 1]
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tokens[4].stack // [0]
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tokens[5].stack // [0, 2]
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// ...
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```
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## See Also
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* [stackgl/glsl-tokenizer](http://github.com/stackgl/glsl-tokenizer)
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* [stackgl/glsl-token-depth](http://github.com/stackgl/glsl-token-depth)
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## License
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MIT. See [LICENSE.md](http://github.com/stackgl/glsl-token-scope/blob/master/LICENSE.md) for details.
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