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Evgeny Poberezkin 2015-12-23 16:56:33 +00:00
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@ -264,14 +264,14 @@ See the example of defining recursive macro keyword `deepProperties` in the [tes
### Define keyword with "inline" compilation function
Inline compilation function is called during schema compilation. It is passed three parameters: `it` (the current schema compilation context), `schema` and `parentSchema` and it should return the code (as a string) that will be inlined in the code of compiled schema. This code can be either an expression that evaluates to the validation result (boolean) or a set of statements that assign the validation result to a variable.
Inline compilation function is called during schema compilation. It is passed four parameters: `it` (the current schema compilation context), `keyword` (added in v3.0 to allow compiling multiple keywords with a single function), `schema` and `parentSchema` and it should return the code (as a string) that will be inlined in the code of compiled schema. This code can be either an expression that evaluates to the validation result (boolean) or a set of statements that assigns the validation result to a variable.
While it can be more difficult to define keywords with "inline" functions, it can have the best performance.
Example `even` keyword:
```
ajv.addKeyword('even', { type: 'number', inline: function (it, schema) {
ajv.addKeyword('even', { type: 'number', inline: function (it, keyword, schema) {
var op = schema ? '===' : '!==';
return 'data' + (it.dataLevel || '') + ' % 2 ' + op + ' 0';
} });