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‎.gitattributes

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# Set default behavior to automatically normalize line endings.
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* text=auto

‎.gitignore

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node_modules
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*.vsix

‎.vscode/launch.json

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// A launch configuration that launches the extension inside a new window
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// Use IntelliSense to learn about possible attributes.
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// Hover to view descriptions of existing attributes.
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// For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
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{
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"version": "0.2.0",
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"configurations": [
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{
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"name": "Extension",
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"type": "extensionHost",
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"request": "launch",
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"args": [
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"--extensionDevelopmentPath=${workspaceFolder}"
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]
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}
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]
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}

‎.vscodeignore

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.vscode/**
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.vscode-test/**
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.gitignore
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vsc-extension-quickstart.md

‎CHANGELOG.md

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# Change Log
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All notable changes to the "source-lsp" extension will be documented in this file.
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Check [Keep a Changelog](http://keepachangelog.com/) for recommendations on how to structure this file.
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## [Unreleased]
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- Initial release

‎README.md

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# source-lsp README
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This is the README for your extension "source-lsp". After writing up a brief description, we recommend including the following sections.
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## Features
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Describe specific features of your extension including screenshots of your extension in action. Image paths are relative to this README file.
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For example if there is an image subfolder under your extension project workspace:
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\!\[feature X\]\(images/feature-x.png\)
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> Tip: Many popular extensions utilize animations. This is an excellent way to show off your extension! We recommend short, focused animations that are easy to follow.
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## Requirements
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If you have any requirements or dependencies, add a section describing those and how to install and configure them.
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## Extension Settings
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Include if your extension adds any VS Code settings through the `contributes.configuration` extension point.
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For example:
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This extension contributes the following settings:
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* `myExtension.enable`: Enable/disable this extension.
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* `myExtension.thing`: Set to `blah` to do something.
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## Known Issues
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Calling out known issues can help limit users opening duplicate issues against your extension.
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## Release Notes
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Users appreciate release notes as you update your extension.
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### 1.0.0
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Initial release of ...
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### 1.0.1
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Fixed issue #.
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### 1.1.0
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Added features X, Y, and Z.
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---
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## Working with Markdown
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You can author your README using Visual Studio Code. Here are some useful editor keyboard shortcuts:
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* Split the editor (`Cmd+\` on macOS or `Ctrl+\` on Windows and Linux).
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* Toggle preview (`Shift+Cmd+V` on macOS or `Shift+Ctrl+V` on Windows and Linux).
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* Press `Ctrl+Space` (Windows, Linux, macOS) to see a list of Markdown snippets.
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## For more information
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* [Visual Studio Code's Markdown Support](http://code.visualstudio.com/docs/languages/markdown)
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* [Markdown Syntax Reference](https://help.github.com/articles/markdown-basics/)
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**Enjoy!**

‎language-configuration.json

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{
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"comments": {
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"lineComment": "//",
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"blockComment": ["/*", "*/"]
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},
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"brackets": [
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["{", "}"],
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["[", "]"],
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["(", ")"]
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],
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"autoClosingPairs": [
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{ "open": "{", "close": "}" },
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{ "open": "[", "close": "]" },
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{ "open": "(", "close": ")" },
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{ "open": "'", "close": "'" },
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{ "open": "\"", "close": "\"" },
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{ "open": "`", "close": "`" }
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],
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"surroundingPairs": [
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{ "open": "{", "close": "}" },
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{ "open": "[", "close": "]" },
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{ "open": "(", "close": ")" },
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{ "open": "'", "close": "'" },
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{ "open": "\"", "close": "\"" },
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{ "open": "`", "close": "`" }
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],
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"wordPattern": "-?\\d*\\.\\d\\w*|\\w+",
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"indentationRules": {
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"increaseIndentPattern": "(\\{[^}\"']*|\\([^\\)]*$|\\[[^\\]]*$)",
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"decreaseIndentPattern": "^\\s*[\\}\\]].*$"
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},
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"onEnterRules": [
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{
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"beforeText": "^\\s*\\b(if|else|for|while||function)\\b.*\\{\\s*$",
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"action": { "indentAction": "Indent" }
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},
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{
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"beforeText": "^\\s*\\{\\s*$",
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"action": { "indentAction": "Indent" }
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},
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{
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"beforeText": "^\\s*\\}\\s*$",
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"action": { "indentAction": "Outdent" }
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}
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]
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}
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‎package.json

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{
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"name": "source-lsp",
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"displayName": "Source-LSP",
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"description": "lsp server for source",
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"version": "0.0.1",
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"engines": {
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"vscode": "^1.96.0"
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},
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"categories": [
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"Programming Languages"
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],
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"contributes": {
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"languages": [{
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"id": "sourcejs",
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"aliases": ["Source", "sourcejs"],
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"extensions": [".sourcejs"],
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"configuration": "./language-configuration.json"
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}],
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"grammars": [{
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"language": "sourcejs",
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"scopeName": "source.sourcejs",
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"path": "./syntaxes/sourcejs.tmLanguage.json"
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}]
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}
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}

‎syntaxes/sourcejs.tmLanguage.json

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{
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"name": "Source", "$schema": "https://raw.githubusercontent.com/martinring/tmlanguage/master/tmlanguage.json",
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"patterns": [
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{ "include": "#comments" },
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{ "include": "#strings" },
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{ "include": "#numbers" },
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{ "include": "#keywords" },
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{ "include": "#operators" },
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{ "include": "#function-names" }
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],
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"repository": {
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"comments": {
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"patterns": [
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{
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"name": "comment.line.double-slash.sourcejs",
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"match": "//.*$"
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},
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{
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"name": "comment.block.sourcejs",
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"begin": "/\\*",
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"end": "\\*/"
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}
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]
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},
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"strings": {
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"patterns": [
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{
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"name": "string.quoted.double.sourcejs",
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"begin": "\"",
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"end": "\"",
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"patterns": [
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{ "match": "\\\\.", "name": "constant.character.escape.sourcejs" }
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]
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},
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{
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"name": "string.quoted.single.sourcejs",
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"begin": "'",
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"end": "'",
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"patterns": [
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{ "match": "\\\\.", "name": "constant.character.escape.sourcejs" }
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]
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},
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{
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"name": "string.template.sourcejs",
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"begin": "`",
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"end": "`",
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"patterns": [
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{ "match": "\\$\\{[^}]+\\}", "name": "meta.template.expression.sourcejs" }
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]
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}
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]
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},
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"numbers": {
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"patterns": [
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{
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"name": "constant.numeric.sourcejs",
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"match": "\\b(0[xX][0-9a-fA-F]+|0[bB][01]+|0[oO]?[0-7]+|\\d+(\\.\\d+)?([eE][+-]?\\d+)?|true|false)\\b"
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}
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]
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},
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"keywords": {
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"patterns": [
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{
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"name": "keyword.control.sourcejs",
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"match": "\\b(if|else|for|while|break|continue|return|function|in|let|const|import)\\b"
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}
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]
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},
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"operators": {
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"patterns": [
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{
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"name": "keyword.operator.sourcejs",
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"match": "(\\+|\\-|\\*|\\/|%|===|!==|>|<|>=|<=|&&|\\|\\||!|=|=>)"
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}
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]
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},
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"function-names": {
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"patterns": [
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{
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"name": "entity.name.function.sourcejs",
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"match": "\\bfunction\\s+([a-zA-Z_][a-zA-Z0-9_]*)\\b"
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}
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]
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}
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},
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"scopeName": "source.sourcejs"
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}

‎test.sourcejs

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const data = [[5, 6, 5, 4, 3, 4, 8, 7, 6, 7, 6, 5, 4, 3, 2, 8, 9, 4, 3, 2, 1, 0, 5, 6, 8, 9, 7, 6, 5, 3, 4, 3, 6, 9, 9, 1, 0, 7, 8, 9, 6, 7, 4, 3, 2, 3, 1, 0, 5, 6, 7, 8], [8, 7, 0, 1, 2, 3, 9, 4, 5, 8, 9, 0, 1, 2, 1, 7, 6, 5, 8, 1, 2, 1, 4, 7, 7, 6, 8, 7, 6, 2, 3, 4, 7, 8, 8, 2, 3, 6, 5, 8, 7, 8, 9, 4, 1, 0, 2, 3, 4, 0, 8, 9], [9, 6, 8, 7, 0, 1, 2, 3, 4, 4, 5, 6, 7, 8, 0, 6, 7, 8, 9, 0, 5, 4, 3, 8, 9, 5, 9, 8, 5, 1, 0, 5, 6, 2, 7, 3, 4, 5, 6, 9, 8, 7, 6, 5, 0, 1, 8, 7, 0, 1, 2, 3], [7, 8, 9, 6, 5, 4, 3, 5, 6, 9, 4, 7, 8, 9, 1, 0, 6, 9, 0, 3, 4, 3, 2, 0, 1, 4, 2, 3, 4, 2, 1, 0, 5, 1, 6, 5, 0, 1, 2, 1, 9, 6, 5, 4, 3, 2, 9, 6, 5, 4, 3, 4], [3, 2, 3, 4, 5, 1, 2, 4, 7, 8, 3, 2, 1, 0, 0, 1, 5, 4, 1, 2, 5, 2, 1, 0, 2, 3, 1, 0, 4, 3, 6, 7, 1, 0, 5, 4, 3, 2, 3, 0, 8, 9, 2, 3, 9, 6, 5, 6, 6, 9, 8, 5], [0, 1, 0, 5, 6, 0, 1, 3, 0, 9, 0, 1, 0, 1, 9, 2, 4, 3, 2, 5, 6, 7, 0, 1, 0, 1, 2, 1, 0, 4, 5, 8, 2, 7, 6, 5, 2, 3, 4, 0, 1, 8, 1, 0, 8, 7, 6, 5, 4, 8, 7, 6], [3, 2, 3, 8, 7, 1, 1, 2, 1, 0, 5, 2, 0, 9, 8, 3, 4, 0, 1, 4, 7, 8, 1, 2, 1, 0, 1, 2, 3, 1, 0, 9, 3, 8, 9, 8, 1, 6, 5, 3, 2, 7, 6, 3, 2, 1, 0, 4, 9, 9, 6, 5], [4, 5, 8, 9, 1, 0, 0, 3, 4, 5, 6, 0, 1, 2, 7, 6, 5, 1, 2, 3, 8, 9, 6, 5, 2, 9, 8, 3, 4, 2, 9, 8, 4, 5, 6, 7, 0, 7, 8, 7, 3, 4, 5, 4, 3, 8, 0, 3, 8, 7, 3, 4], [7, 6, 7, 1, 0, 1, 8, 9, 8, 6, 7, 9, 8, 3, 4, 5, 6, 0, 1, 4, 5, 6, 7, 4, 3, 8, 7, 6, 5, 3, 6, 7, 6, 2, 1, 0, 3, 8, 9, 4, 4, 2, 1, 5, 8, 9, 1, 2, 5, 6, 2, 1], [8, 5, 6, 2, 3, 2, 7, 0, 1, 9, 8, 8, 7, 0, 1, 6, 5, 1, 2, 5, 6, 7, 8, 9, 5, 8, 0, 5, 4, 4, 5, 6, 5, 3, 2, 1, 4, 5, 4, 5, 4, 3, 0, 6, 7, 7, 8, 9, 4, 1, 0, 0], [9, 4, 4, 3, 4, 5, 6, 5, 2, 3, 4, 5, 6, 3, 2, 5, 4, 3, 4, 8, 9, 8, 6, 5, 6, 9, 1, 4, 5, 6, 0, 3, 4, 4, 3, 6, 7, 6, 5, 6, 5, 2, 8, 9, 1, 2, 7, 6, 3, 2, 1, 0], [2, 3, 5, 6, 9, 3, 2, 1, 0, 8, 7, 0, 1, 2, 3, 6, 7, 2, 1, 0, 1, 9, 8, 4, 7, 8, 2, 3, 2, 7, 1, 2, 5, 5, 6, 9, 8, 7, 6, 7, 8, 1, 7, 6, 0, 3, 4, 5, 4, 3, 2, 3], [1, 0, 4, 7, 8, 2, 3, 0, 1, 9, 8, 5, 4, 3, 4, 9, 8, 3, 2, 4, 7, 8, 7, 3, 9, 8, 5, 4, 1, 8, 0, 7, 6, 6, 7, 8, 9, 6, 7, 8, 9, 0, 6, 5, 4, 1, 0, 6, 5, 4, 1, 0], [2, 1, 5, 4, 0, 1, 4, 3, 2, 3, 7, 6, 9, 8, 5, 8, 2, 1, 0, 5, 6, 7, 0, 2, 6, 7, 6, 5, 0, 9, 9, 8, 5, 0, 1, 7, 6, 5, 4, 3, 2, 1, 5, 4, 3, 2, 8, 7, 8, 9, 2, 9], [3, 7, 6, 3, 0, 0, 5, 4, 5, 8, 9, 5, 8, 7, 6, 5, 5, 2, 3, 4, 5, 0, 1, 1, 0, 6, 2, 3, 4, 5, 8, 9, 0, 1, 2, 8, 9, 0, 1, 2, 1, 0, 3, 8, 9, 8, 9, 4, 5, 6, 7, 8], [7, 8, 9, 2, 1, 7, 6, 7, 6, 7, 5, 6, 7, 8, 9, 4, 6, 5, 4, 5, 4, 3, 2, 1, 0, 2, 1, 0, 5, 6, 7, 1, 1, 0, 3, 7, 8, 6, 5, 0, 1, 1, 2, 3, 6, 7, 6, 3, 0, 5, 6, 7], [4, 5, 6, 7, 9, 8, 9, 8, 5, 3, 0, 1, 8, 7, 2, 3, 7, 4, 3, 2, 1, 0, 3, 2, 1, 6, 7, 1, 0, 0, 3, 0, 2, 5, 4, 9, 6, 7, 4, 3, 2, 0, 3, 4, 5, 6, 7, 2, 1, 6, 5, 6], [3, 2, 9, 8, 7, 8, 9, 9, 1, 4, 3, 2, 9, 6, 1, 0, 8, 9, 4, 9, 8, 7, 4, 3, 4, 5, 8, 2, 3, 1, 2, 1, 3, 6, 7, 8, 9, 8, 6, 7, 6, 5, 4, 1, 0, 9, 8, 7, 6, 5, 4, 5], [0, 1, 0, 7, 6, 7, 8, 8, 0, 1, 4, 5, 8, 5, 4, 3, 0, 4, 3, 4, 0, 6, 5, 3, 5, 4, 9, 5, 4, 4, 3, 2, 4, 9, 8, 3, 4, 5, 7, 8, 9, 4, 3, 2, 1, 8, 1, 0, 3, 4, 3, 0], [1, 0, 1, 4, 5, 6, 5, 4, 3, 2, 3, 6, 7, 2, 3, 2, 1, 1, 2, 3, 1, 2, 3, 4, 5, 4, 5, 6, 9, 5, 4, 9, 5, 6, 7, 2, 5, 6, 6, 9, 8, 6, 7, 8, 2, 3, 2, 1, 2, 3, 2, 1], [0, 1, 2, 3, 0, 5, 4, 5, 4, 5, 8, 5, 0, 1, 8, 7, 6, 0, 1, 4, 3, 2, 1, 9, 6, 3, 0, 7, 8, 6, 7, 8, 7, 5, 2, 1, 8, 7, 5, 4, 7, 5, 6, 9, 8, 4, 6, 5, 4, 3, 2, 1], [1, 2, 3, 2, 1, 2, 3, 4, 5, 6, 9, 8, 7, 6, 9, 6, 5, 6, 6, 5, 4, 5, 0, 8, 7, 2, 1, 2, 9, 8, 7, 8, 9, 0, 1, 0, 9, 8, 4, 3, 4, 0, 5, 4, 9, 8, 7, 8, 9, 2, 1, 0], [8, 7, 4, 1, 8, 7, 6, 5, 6, 7, 8, 9, 6, 5, 0, 1, 4, 8, 7, 6, 5, 6, 9, 9, 6, 5, 0, 1, 2, 5, 6, 7, 6, 5, 2, 1, 0, 7, 6, 2, 1, 1, 2, 3, 0, 1, 2, 3, 0, 1, 0, 1], [9, 6, 5, 0, 9, 8, 5, 4, 0, 1, 2, 2, 3, 4, 3, 2, 3, 9, 8, 7, 4, 7, 8, 8, 7, 4, 5, 0, 3, 4, 5, 0, 3, 4, 3, 6, 9, 8, 5, 4, 0, 1, 3, 0, 1, 0, 1, 4, 9, 8, 7, 7], [8, 9, 6, 7, 8, 1, 2, 3, 7, 0, 3, 1, 4, 6, 7, 1, 0, 5, 4, 3, 2, 1, 0, 7, 6, 3, 6, 5, 4, 3, 2, 1, 2, 3, 4, 5, 6, 3, 4, 3, 4, 0, 1, 3, 2, 3, 4, 5, 6, 7, 7, 8], [7, 8, 7, 4, 9, 0, 1, 9, 8, 7, 4, 0, 4, 5, 8, 9, 9, 6, 9, 9, 6, 5, 4, 3, 1, 2, 5, 6, 5, 0, 1, 4, 3, 2, 3, 6, 9, 2, 6, 5, 6, 9, 2, 4, 5, 4, 9, 8, 7, 5, 6, 9], [2, 9, 6, 5, 5, 4, 3, 2, 5, 6, 5, 6, 3, 2, 1, 7, 8, 7, 8, 8, 7, 2, 1, 2, 0, 3, 8, 7, 1, 2, 4, 5, 0, 1, 0, 7, 8, 1, 0, 4, 7, 8, 3, 4, 6, 7, 8, 7, 3, 4, 5, 6], [1, 2, 3, 4, 6, 3, 0, 1, 5, 9, 8, 7, 0, 1, 0, 1, 7, 6, 7, 0, 1, 3, 0, 9, 8, 5, 9, 1, 0, 3, 7, 6, 1, 2, 1, 5, 6, 9, 4, 3, 4, 7, 6, 5, 5, 0, 0, 1, 2, 3, 4, 7], [0, 3, 2, 3, 7, 0, 1, 0, 6, 8, 9, 6, 5, 4, 3, 2, 6, 5, 6, 5, 2, 3, 1, 0, 7, 6, 5, 2, 3, 4, 8, 7, 6, 5, 7, 4, 7, 8, 7, 2, 1, 0, 5, 6, 2, 1, 8, 9, 1, 2, 9, 8], [3, 4, 1, 0, 8, 9, 2, 4, 5, 4, 3, 2, 1, 1, 4, 0, 5, 4, 5, 4, 3, 2, 1, 1, 2, 5, 4, 3, 6, 5, 9, 8, 7, 7, 8, 3, 1, 0, 3, 0, 3, 2, 3, 4, 3, 6, 7, 6, 0, 1, 0, 1], [6, 5, 9, 8, 5, 4, 3, 2, 6, 5, 2, 1, 0, 0, 6, 1, 2, 3, 6, 7, 8, 9, 0, 9, 3, 4, 5, 6, 7, 0, 1, 4, 3, 6, 9, 2, 1, 1, 2, 1, 4, 1, 0, 3, 4, 5, 6, 0, 3, 4, 5, 6], [5, 6, 7, 7, 6, 1, 0, 1, 7, 8, 9, 0, 1, 1, 7, 6, 6, 7, 8, 7, 6, 8, 1, 8, 6, 5, 6, 9, 8, 9, 2, 3, 4, 5, 4, 3, 0, 2, 3, 6, 5, 8, 7, 1, 0, 7, 8, 1, 2, 3, 6, 7], [0, 1, 8, 9, 8, 2, 5, 6, 7, 9, 5, 4, 3, 2, 8, 5, 7, 8, 9, 4, 5, 1, 0, 7, 6, 6, 5, 4, 3, 8, 5, 4, 5, 4, 3, 2, 1, 9, 4, 7, 4, 9, 6, 2, 3, 6, 9, 0, 1, 0, 9, 8], [1, 6, 7, 0, 1, 3, 4, 3, 8, 9, 0, 5, 6, 9, 9, 4, 8, 7, 4, 3, 4, 2, 3, 4, 5, 7, 8, 9, 2, 7, 6, 5, 4, 2, 1, 0, 0, 8, 5, 8, 9, 0, 5, 1, 4, 5, 6, 1, 0, 3, 2, 9], [2, 7, 6, 5, 2, 4, 5, 2, 1, 2, 1, 6, 7, 8, 2, 3, 9, 6, 5, 2, 1, 8, 7, 6, 3, 2, 1, 0, 1, 6, 7, 0, 3, 3, 1, 0, 3, 7, 6, 7, 8, 1, 4, 0, 9, 8, 7, 8, 3, 4, 1, 0], [3, 8, 7, 4, 3, 9, 6, 1, 0, 3, 4, 5, 6, 7, 1, 0, 4, 5, 4, 1, 0, 9, 4, 5, 4, 1, 0, 9, 0, 9, 8, 1, 2, 4, 9, 1, 2, 9, 8, 0, 1, 2, 3, 0, 4, 5, 6, 9, 6, 5, 9, 8], [4, 9, 8, 3, 0, 8, 7, 0, 2, 3, 4, 6, 9, 8, 3, 2, 3, 1, 0, 0, 8, 7, 3, 4, 5, 6, 7, 8, 5, 6, 7, 8, 6, 5, 8, 4, 3, 8, 3, 2, 6, 5, 2, 1, 3, 6, 7, 8, 7, 8, 6, 7], [5, 6, 7, 2, 1, 7, 1, 1, 1, 0, 5, 7, 8, 7, 6, 1, 1, 0, 1, 2, 9, 6, 2, 1, 8, 7, 7, 8, 4, 1, 0, 9, 7, 6, 7, 5, 6, 7, 4, 1, 7, 4, 3, 4, 2, 1, 6, 9, 1, 9, 5, 8], [9, 8, 7, 6, 7, 8, 0, 9, 8, 7, 6, 4, 5, 6, 7, 0, 8, 1, 4, 3, 8, 5, 6, 0, 9, 5, 6, 9, 3, 2, 8, 9, 8, 5, 4, 0, 1, 6, 5, 0, 8, 9, 8, 3, 3, 0, 5, 4, 0, 3, 4, 9], [6, 5, 6, 5, 4, 9, 1, 2, 3, 4, 5, 3, 2, 1, 8, 9, 9, 8, 5, 6, 7, 4, 2, 1, 2, 4, 3, 2, 3, 1, 0, 6, 7, 0, 3, 3, 2, 7, 9, 8, 5, 6, 7, 8, 9, 1, 2, 3, 1, 2, 1, 0], [5, 4, 3, 0, 3, 0, 3, 4, 5, 6, 5, 4, 1, 0, 2, 3, 4, 7, 6, 5, 4, 3, 2, 0, 3, 4, 2, 1, 2, 1, 1, 5, 9, 1, 2, 4, 3, 8, 9, 7, 6, 7, 8, 7, 8, 0, 0, 1, 0, 6, 7, 6], [6, 3, 2, 1, 2, 1, 2, 1, 8, 7, 6, 5, 0, 1, 1, 6, 5, 6, 7, 8, 0, 0, 1, 3, 4, 5, 6, 0, 1, 0, 1, 4, 8, 7, 6, 5, 4, 0, 1, 6, 5, 4, 9, 6, 5, 4, 3, 2, 1, 9, 8, 5], [7, 8, 9, 0, 3, 4, 1, 0, 9, 8, 5, 6, 5, 2, 0, 7, 6, 5, 6, 9, 1, 2, 1, 2, 9, 8, 7, 0, 1, 2, 2, 3, 7, 1, 2, 1, 0, 3, 2, 3, 4, 3, 4, 5, 4, 5, 4, 0, 1, 0, 1, 4], [6, 0, 8, 8, 7, 8, 0, 8, 7, 9, 8, 7, 6, 3, 4, 8, 7, 4, 5, 9, 2, 3, 0, 3, 8, 5, 6, 5, 4, 3, 0, 1, 1, 0, 3, 2, 6, 5, 4, 6, 7, 8, 3, 2, 5, 6, 9, 1, 0, 1, 2, 3], [2, 1, 0, 9, 6, 9, 1, 9, 6, 5, 6, 6, 5, 4, 8, 9, 6, 3, 2, 8, 7, 4, 5, 6, 7, 6, 7, 8, 3, 2, 1, 0, 6, 5, 4, 8, 7, 2, 3, 5, 4, 9, 0, 1, 2, 7, 8, 2, 3, 4, 3, 4], [1, 2, 3, 4, 5, 3, 2, 2, 3, 4, 7, 8, 6, 5, 4, 3, 2, 1, 1, 0, 6, 5, 2, 1, 2, 5, 8, 9, 8, 3, 2, 9, 6, 6, 5, 9, 9, 1, 0, 4, 3, 8, 1, 0, 3, 0, 1, 9, 8, 5, 6, 9], [0, 3, 9, 8, 9, 4, 0, 1, 2, 3, 8, 9, 4, 6, 7, 8, 7, 0, 7, 8, 4, 5, 1, 0, 3, 4, 9, 2, 1, 2, 3, 8, 7, 7, 6, 7, 8, 5, 6, 7, 2, 1, 0, 9, 4, 3, 2, 1, 7, 6, 7, 8], [1, 7, 8, 7, 6, 5, 4, 0, 1, 4, 7, 8, 3, 2, 8, 9, 6, 9, 8, 9, 3, 4, 5, 9, 8, 7, 8, 3, 0, 3, 4, 5, 6, 8, 9, 4, 3, 4, 9, 8, 2, 1, 9, 8, 5, 4, 0, 0, 6, 0, 1, 0], [5, 6, 7, 1, 0, 1, 3, 0, 0, 5, 6, 5, 4, 1, 9, 4, 5, 6, 7, 8, 2, 7, 6, 4, 7, 6, 9, 5, 6, 9, 3, 2, 1, 0, 0, 1, 2, 3, 8, 2, 1, 0, 8, 7, 6, 0, 1, 2, 5, 4, 2, 1], [0, 5, 4, 2, 5, 6, 2, 1, 9, 6, 6, 7, 8, 0, 0, 3, 4, 3, 0, 9, 1, 8, 0, 3, 4, 5, 0, 6, 7, 8, 4, 3, 4, 5, 8, 9, 4, 5, 6, 3, 4, 5, 6, 9, 7, 8, 9, 3, 4, 4, 3, 8], [1, 2, 3, 3, 4, 7, 8, 7, 8, 7, 5, 4, 9, 1, 1, 2, 3, 2, 1, 2, 0, 9, 1, 2, 3, 2, 1, 5, 4, 1, 0, 2, 5, 6, 7, 2, 3, 8, 7, 4, 5, 6, 7, 8, 3, 4, 9, 8, 3, 5, 4, 9], [2, 0, 1, 2, 9, 8, 9, 1, 0, 1, 2, 3, 8, 1, 0, 3, 0, 1, 2, 2, 1, 3, 2, 3, 0, 1, 2, 3, 3, 2, 2, 1, 0, 5, 0, 1, 2, 9, 6, 5, 4, 5, 0, 1, 2, 5, 6, 7, 6, 6, 7, 8]];
2+
3+
function find_trailhead(x, y) {
4+
if (data[y][x] === 9) {
5+
let not_visited = true;
6+
for_each(p => {
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if (head(p) === x && tail(p) === y) {
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not_visited = false;
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}
10+
}, visited);
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if (not_visited) {
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visited = pair(pair(x,y), visited);
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return 1;
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}
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}
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let num_trailheads = 0;
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if (x !== 0 && data[y][x - 1] - data[y][x] === 1){
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num_trailheads = num_trailheads + find_trailhead(x - 1, y);
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}
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if (y !== 0 && data[y-1][x] - data[y][x] === 1){
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num_trailheads = num_trailheads + find_trailhead(x, y - 1);
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}
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if (x !== array_length(data[0])-1 && data[y][x + 1] - data[y][x] === 1){
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num_trailheads = num_trailheads + find_trailhead(x + 1 , y);
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}
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if (y !== array_length(data)-1 && data[y+1][x] - data[y][x] === 1){
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num_trailheads = num_trailheads + find_trailhead(x, y + 1);
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}
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return num_trailheads;
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}
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let ans = 0;
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let visited = list();
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for (let y = 0; y < array_length(data); y=y+1) {
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for (let x = 0; x < array_length(data[0]); x=x+1) {
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if (data[y][x] === 0) {
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ans = ans + find_trailhead(x, y);
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visited = list();
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}
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}
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}
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display(ans);

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