Seed7 Language Support provides syntax highlighting for Seed7 code, a custom theme, and integration with Code Runner for running Seed7 files in Visual Studio Code, including support for the .sd7 and .s7i file extensions.
Current Version: 0.1.3
Features
Syntax Highlighting:
Enhanced syntax highlighting for Seed7 code, with support for many keywords.
Snippets:
Basic Seed7 code snippets are included to speed up your workflow.
(Make sure "editor.snippetSuggestions": "top" is set for the best experience - see below.)
Custom Theme:
A full theme based on Tokyo Night Dark, with custom token colors specifically for Seed7.
Code Runner Integration:
Automatically configures Code Runner to support Seed7 files:
Maps .sd7 files to run with a command that compiles the code and then runs the resulting executable.
Sets additional Code Runner options:
clearPreviousOutput: true
saveAllFilesBeforeRun: true
runInTerminal: true
:warning: If you decline, we’ll ask again only a few more times, just in case you change your mind.
File Associations:
Associates files with the .sd7 or .s7i extension with the Seed7 language mode.
This allows for proper syntax highlighting and language features.
Smart Workspace Setup (Optional):
When you create a .sd7 or .s7i file, this extension will automatically detect if your project lacks a .vscode/ folder, and offer to create a basic .vscode/settings.json file for you.
If accepted, the file will include:
{
"editor.snippetSuggestions": "top"
}
This ensures that Seed7 snippets appear at the top of VS Code’s IntelliSense suggestions for a smoother coding experience.
:warning: If you decline, we’ll ask again only a few more times, just in case you change your mind.
:exclamation: This change only affects the current workspace, not your global VS Code settings.
Cleanup Command:
Provides a command to remove Seed7-specific settings from the user’s configuration if needed.
Available Snippets
main: Inserts a basic Seed7 program structure with a main function.
func: Inserts a function definition template.
proc: Inserts a procedure definition template.
if: Inserts an if statement template.
elseif: Inserts an if-elsif-else statement template.
ifelse: Inserts an if-else statement template.
case: Inserts a case statement template.
while: Inserts a while loop template.
for: Inserts a for loop template.
const: Inserts a constant variable declaration template.
var: Inserts a variable declaration template.
wln: Inserts a writeln statement template for outputting text to the console.
rln: Inserts a readln statement template for reading input from the console.
array: Inserts a default array declaration template.
arr0: Inserts a zero-based array declaration template.
Disclaimer
Compilation vs. Interpretation:
The default Code Runner configuration provided by this extension compiles your Seed7 code (using the command s7c) and then runs the resulting executable. It does not run the code via an interpreter.
Customization:
You can change this behavior by editing your settings.json. For example, if you prefer to run the code without launching the executable, you can replace s7c with s7 in the configuration and remove the second command that executes the generated executable.
Compiler Download:
Please note that you must download the Seed7 compiler separately from the official Seed7 website as it is not bundled with this extension.
Code Runner Settings Display:
This extension only adds a custom executor for .sd7 files and file associations for both .sd7 and .s7i files. The Code Runner settings panel in the general settings.json will show a merged view of all settings, including defaults for other languages. This is expected behavior.
Development Status:
This extension is still in development. Not all Seed7 keywords are supported yet, and improvements are actively being worked on.
Version Details
Current Version: 0.0.2
This version adds more keywords to the syntax highlighting, support for the .s7i file extension, and basic snippet support.
Check the CHANGELOG for detailed release notes.
If you haven't already, install Code Runner (this extension automatically prompts to install it as a dependency).
Usage
Editing Seed7 Files:
Open any file with the .sd7 or .s7i extension to start using the Seed7 syntax highlighting, snippets, and the custom theme if selected.
Selecting the Theme:
Press Ctrl+K Ctrl+T (or use Preferences: Color Theme) and select Seed7 Dark to use the custom theme.
Running Code:
Code Runner is configured to compile and then execute Seed7 files using your custom command. Use Code Runner's run button or the shortcut Ctrl+Alt+N to run your Seed7 code.
You can still run the code using the terminal through the command s7c or s7 followed by the file name.
Commands
Seed7: Remove Settings
To remove the Seed7-specific Code Runner settings and file associations, open the Command Palette (Ctrl+Shift+P) and run:
Seed7: Remove Settings
This command cleans up any custom settings added by the extension.
Troubleshooting
Settings Not Applied?
Ensure that your file is recognized as a Seed7 file (check the language mode in the bottom-right corner).
Make sure Code Runner is installed.
Use Developer: Inspect Editor Tokens and Scopes to verify that the Seed7 grammar is applied.
Need to Remove Custom Settings:
Use the Seed7: Remove Settings command if you uninstall the extension and want to clean up your user settings.
Contributing
Contributions and feedback are welcome! Please open an issue or submit a pull request on GitHub.
