Eiffel Language Support

This Visual Studio Code extension provides syntax highlighting and code snippets for Eiffel language development.

Once installed, files with the .e extension will automatically activate the Eiffel syntax highlighting and snippet support.

Syntax Highlighting

The Eiffel language syntax is supported through a custom grammar definition. It highlights the following:

• Comments: Single-line comments start with --. Keywords: Keywords such as class, feature, do, end, if, else, from, and more are highlighted.
• Variables: All variable names that follow standard Eiffel naming conventions are highlighted.
• Constants: Common constants like True, False, Void, Result, and Current are included.
• String Literals: Double-quoted strings are highlighted, with escape sequences recognized within them.
• Numbers: Numeric constants are highlighted. Modifiers: Keywords like deferred, expanded, and storage modifiers are highlighted for better readability.
• Class Definitions: The extension provides recognition for class structures, including inheritance and class-level declarations.

Code Snippets

C# / Java keywords for snippets, just write the familiar keywords from your mind, and press tab.

Variables:

• var
• null_var
• const

Assignments / conversions:

• assignment
• cast
• convert_from
• convert_to

Functions:

• fun / routine
• once fun / once routine

Branching and checks:

• if
• elif / elseif / else if

---

• switch / inspect
• case / when

---

• check
• instanceof / check type
• if not null / check not null
• if attached / check attached

---

• strip / only

Loops:

• for / repeat
• foreach / across
• foreach all
• foreach some
• retry

Exceptions:

• throw if null / throw if not attached / throw if detached

Classes:

• class
• expanded class
• abstract class / deferrred class

Class instantiation:

• new statement / create statement
• new expression / create expression

Class variables:

• property
• attribute

Class functions:

• abstract fun / deferred routine
• export fun / external routine

---

• init attribute
• private features
• private creates
• private constructors
• protected features
• protected constructors
• protected constructors

Other:

• debug
• indexing

Enjoy coding in Eiffel with enhanced productivity!