---
title: RegexComponentBuilder
framework: regexbuilder
role: symbol
role_heading: Enumeration
path: regexbuilder/regexcomponentbuilder
---

# RegexComponentBuilder

A custom parameter attribute that constructs regular expressions from closures.

## Declaration

```swift
@resultBuilder enum RegexComponentBuilder
```

## Overview

Overview You typically see RegexComponentBuilder as a parameter attribute for Regex- or RegexComponent-producing closure parameters, allowing those closures to combine multiple regular expression components. Type initializers and string algorithm methods in the RegexBuilder framework include a builder closure parameter, so that you can use regular expression components together.

## Topics

### Type Methods

- [buildBlock()](regexbuilder/regexcomponentbuilder/buildblock().md)
- [buildExpression(_:)](regexbuilder/regexcomponentbuilder/buildexpression(_:).md)
- [buildLimitedAvailability(_:)](regexbuilder/regexcomponentbuilder/buildlimitedavailability(_:)-1l3rg.md)
- [buildLimitedAvailability(_:)](regexbuilder/regexcomponentbuilder/buildlimitedavailability(_:)-4at76.md)
- [buildLimitedAvailability(_:)](regexbuilder/regexcomponentbuilder/buildlimitedavailability(_:)-4hn5e.md)
- [buildLimitedAvailability(_:)](regexbuilder/regexcomponentbuilder/buildlimitedavailability(_:)-59bdi.md)
- [buildLimitedAvailability(_:)](regexbuilder/regexcomponentbuilder/buildlimitedavailability(_:)-6pyeu.md)
- [buildLimitedAvailability(_:)](regexbuilder/regexcomponentbuilder/buildlimitedavailability(_:)-75sld.md)
- [buildLimitedAvailability(_:)](regexbuilder/regexcomponentbuilder/buildlimitedavailability(_:)-79ri4.md)
- [buildLimitedAvailability(_:)](regexbuilder/regexcomponentbuilder/buildlimitedavailability(_:)-8v501.md)
- [buildLimitedAvailability(_:)](regexbuilder/regexcomponentbuilder/buildlimitedavailability(_:)-9xvwl.md)
- [buildLimitedAvailability(_:)](regexbuilder/regexcomponentbuilder/buildlimitedavailability(_:)-c1mb.md)
- [buildLimitedAvailability(_:)](regexbuilder/regexcomponentbuilder/buildlimitedavailability(_:)-d693.md)
- [buildPartialBlock(accumulated:next:)](regexbuilder/regexcomponentbuilder/buildpartialblock(accumulated:next:)-14sjx.md)
- [buildPartialBlock(accumulated:next:)](regexbuilder/regexcomponentbuilder/buildpartialblock(accumulated:next:)-1kun5.md)
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- [buildPartialBlock(first:)](regexbuilder/regexcomponentbuilder/buildpartialblock(first:).md)

## See Also

### Builders

- [AlternationBuilder](regexbuilder/alternationbuilder.md)