https://github.com/guillep/pharo-string-interpolation

Compiler extensions for Pharo to add string interpolation
https://github.com/guillep/pharo-string-interpolation

Last synced: 16 days ago
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Compiler extensions for Pharo to add string interpolation

• Host: GitHub
• URL: https://github.com/guillep/pharo-string-interpolation
• Owner: guillep
• Created: 2019-02-11T15:57:20.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2019-02-11T22:36:43.000Z (almost 6 years ago)
• Last Synced: 2024-10-31T06:42:04.204Z (2 months ago)
• Language: Smalltalk
• Size: 13.7 KB
• Stars: 4
• Watchers: 4
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# Pharo String Interpolation

This package contains a compiler extension to add string interpolation to Pharo

## String Interpolation Examples

Interpolated Strings are literal strings that contain expressions, which are replaced by the results of those expressions.

String interpolation provides a readable way to compose strings out of expressions.

The following table contains examples of such strings:

| String        | Value           |

| ------------- |-------------|

| 'Constant 1 is {1}'      | 'Constant 1 is 1' |

| 'Result of 1+2 is {1+2}'      | 'Result of 1+2 is 3'      |

| 'Arbitrary expressions can be used as of {Date new}' |  'Arbitrary expressions can be used as of 11 February 2019'   |

Any expression valid within the context of the string is a valid interpolated expression.

This includes access to temporary variables, arguments, instance variables and so on...

## Activating String Interpolation

String interpolation is available as a compiler plugin that you may activate per class by redefining the `compiler` method:

```smalltalk

MyClass class >> compiler

	^super compiler addPlugin: StringInterpolationPlugin

```

From that moment on, you can use interpolated strings on any instance side method.

## Questions and Next Steps

 - How can I escape the `{}` characters in my string? You can escape them with the `\` character. E.g., `\{`

 - Can I use these and the `format:` methods on String? Right now they are not compatible, since they use the same syntax.

 - Next Step: Get other tools aware of the interpolation transformation (syntax highlighter, critics...)

 - Next Step: making string interpolation available for global scopes (such as class sides, playgrounds...)