Structured Text (IEC 61131-3)

Most complete Structured Text language support. Features includes:

• Syntax highlights
• Snippets
• Outline view
• Breadcrumbs
• Go to Symbol in File
• Commands

Syntax Highlights

Includes syntax highlight based on IEC 61131-3 draft, including namespaces, SFC elements (STEP, ACTION, TRANSITION), constant variables (2#000_1010, 16#1E, INT#23) and more.

Snippets

Fast growing snippets library. All cycles, conditions and declarations.

Commands

Can automatically capitalize constants like TRUE, FALSE. Either use command ST: Format from command pallet, of from editor context menu. There is also user setting st.autoFormat which is set true by default, you can turn it off.

Note

• The same Author contributed ST support for Monaco Editor and highlight.js.
• This extension project is a part of my "Structured Text Bible" book which I am working on right now.

Roadmap

• LSP (Language Server Protocol)
• Suggestions
• Lints

Release Notes

1.7.1

• fix - syntax highlights keyword inside another word
• fix - build document structure with block indented
• add - outline for Structures and Enumerations
• enhance - outline for other elements
• enhance - right click commands now appear only in ST files

1.6.0

• add - outline document structure
• add - Go to symbol in file support
• add - breadcrumbs

1.5.0

• improve - function highlights. Now we Highlight all function either user defined or built in.
• improve - variable declaration or STRUCT declaration section has got a lot of improvements. We highlight custom types now, and whole section looks much cleaner because scopes were changed.
• improve - If you call for a method of a function block through dot my_fb.method() method is highlighted. We also highlight function block properties or parameters.
• add - TODO or TODO: in comments attract an attention
• add - Highlights for action modifiers myAction(DS, T#3s); where DS will be highlighted.
• add - Highlights for names of parameters of function block.

1.4.0

I've learned few things about syntax highlights. Big refactoring. I added some missing keywords, changed some coloring scopes and improved coloring in general.

1.3.1

• add - TYPE creation snippets (enumerations ans structure) and enhance it's syntax highlights
• enhance - Select type out of suggestion list when inset variable in declaration area from snippet
• enhance - Utilise October 2018 feature for multiple prefixes in snippets and add multiple prefixes to some snippets.
• fix - syntax highlights for function_block

1.3.0

More stable version

• fix - Auto close comments /*. (*.
• enhance - revision of highlights much better now.

1.2.4

• fix - Insert END_VAR after VAR is inserted.
• fix - highlights for WORD datatype.
• fix - other minor changes

1.2.3

• fix - Notification "This file not a structured text language!" #6

1.2.0

Big step forward. Now it is not only language configuration it is JS code that can enhance codding experience.

• add - Command pallet Ctrl+Shift+P command ST: Format
• add - same command context menu
• add - user parameter st.autoFormat

All 3 make the same. Capitalize constants like TRUE, FALSE, EXIT and others. Right now only few. This is only proof of concept. Later we will add more beautifications.

1.1.0

• add - a lot of different snippets
• enhance - syntax highlight like function names, program and function definitions, etc..

1.0.9

• fix - extensions metadata tags
• add - new functions to support logi.CAD 3 reference variables.
• enhance - auto indentations inside IF, PROGRAM, VAR, ...

1.0.8

• fix - close [ bracket
• add - region folding
• improve - keywords case

1.0.7

• improve - readme file
• improve - syntax highlights scopes

1.0.5

• add- few new snippets.
• fix - some keywords highlight issue

1.0.4

• add- new file extensions to support logi.CAD 3 projects.