DataGrip 2019.1 Help

Language injections

Language injections let you work with pieces of code inside string literals as well as tags or attributes in XML-like languages.

When you have a piece of formal language (such as HTML, CSS, XML, RegExp, and so on) inside a string literal, tag, or attribute, you can get comprehensive language assistance for editing that piece.

Temporarily inject a language

  1. Place the cursor inside a string literal, tag, or attribute, in which you want to inject a language and press Alt+Enter (or use the intention action icon Intention action icon).

  2. Select Inject language or reference and choose the language you want to inject.

    Injecting HTML

Open a code fragment in the dedicated editor section

  1. Position the caret within the injected code piece and press Alt+Enter (or use the intention action icon Intention action icon).

  2. Select Edit <language ID> Fragment.

    DataGrip will open a dedicated editor section for editing the code with the injected language. This editor provides full code assistance, including code completion, inspections, intentions and code style actions.

    Open a code fragment in the dedicated editor section

Use language injection comments

  • Add a blank line before the target string literal, and type the following comment:

    -- language=<language_ID>

    For comments, use the syntax of the language you want to inject. Language IDs are generally intuitive, e.g. SQL, RegExp, XML, HTML.

    Use language injection comments

A language fragment may be combined with a prefix and a suffix that act together as a wrapper, turning the fragment into a syntactically complete language unit. When editing your code, you can see prefixes and suffixes only in the fragment editor. They are not shown in the main editor.

The prefix and the suffix can be included in the injection comment as follows:

// language=<language_ID> prefix=<prefix> suffix=<suffix>
sql injection comment html prefixes

Inject XML and JSON automatically

For values that are defined as XML and JSON types, the corresponding languages are injected automatically.

To inject a language automatically, declare a type in the expression (for example, XML or JSON).

sql auto inject xml

Inject a language for user-defined data types

You can create patterns for user-defined data types and associate those patterns with languages. For the data type that matches the pattern, DataGrip injects the specified language automatically.

  1. Declare your custom data type (for example, MY_CUSTOM_DATA_TYPE).

  2. Click the value in the quotation marks and press Alt+Enter.

  3. Select Inject by Type and select the language that you want to inject (for example, XML (XML files)).

  4. In the Type pattern field, type a regular expression for the pattern that you want to use for your custom data type (for example, use the (?i).* regular expression).

sql mydata xml injected

Configure injection rules

You can configure language injection rules on the Editor | Language Injections page of DataGrip settings (Ctrl+Alt+S).

Language injections settings

All pre-defined injection rules are configured for the Built-in scope. In other words, they are global (and therefore available in all DataGrip projects). Custom rules can be configured for the IDE or for one project only. To change the scope of custom injections, use the icons toolbarDecorator import svg icon.

To configure custom injection rules, click icons general add svg to add a new rule, or copy a predefined rule and change its settings.

Cancel injections

  1. Place the cursor to the code fragment and press Alt+Enter (or use the intention action icon the Intention action button).

  2. Select Un-inject language/reference.

To cancel a language injection, you can also delete the injection comment or annotation.

Last modified: 17 May 2019

See Also

Getting Started: