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Alpha Runtime

Alpha Runtime provides a way to execute programs written in the assemlber language "α-Notation".

The α-Notation is originally a pseudo assembler language that I got introduced to in the module "Systemnahme Informatik (SS 2021)" at Uni Bonn. It is a simplified assembler for educational purposes.

How to use

Here's the starter template for Node.js and ES6 JS. Make sure to check out the JSDoc documentation for more detailed information!

Node.js (Typescript)

importexecutefrom'./alpha-runtime/Executor'importparsefrom'./alpha-runtime/Parser'constcode=String(readFileSync('./alpha-runtime/tests/programs/add42.alpha','utf8'));constprogram=parse(code);construntimeState=execute(program);// do something with the resulting runtimeState

You can create a own Runtime object with custom callback functions and pass this runtime into the execute function.

construntime=newRuntime(program,{onMemoryWrite: (writeAddress: String,newValue: number,wasInitialized: boolean)=>console.log('memory write'),onStackChange: (value: number,type: OnStackChangeEventType)=>console.log('stack change'),onCallStackChange?: (value: number,type: OnStackChangeEventType)=>console.log('call stack change'),onInstructionPointerChange?: (value: number)=>console.log('instruction pointer change'),onProgramEnd?: ()=>console.log('end of program')});construntimeState=execute(program,runtime);

ES6 JS

Make sure to build everything via webpack

npminpmrunbuild
<scriptsrc='./alpha-runtime/dist/index.js'></script><script>letcode="ρ(1) := 10;\nρ(2) := 32;\nρ(result) := ρ(1) + ρ(2);"letprogram=parse(code);letruntimeState=execute(program);</script>

Structure

  • parse() takes a string and convertes it into an AST. This is done via a PEGJS grammar that combines lexer and parser.
  • execute() operates on a program and a runtime and keeps executing the next statement until the program halts.
  • Runtime consists of 4 parts:
    • stack and callstack, which both use the custom Stack class
    • memory which uses the custom Memory class
    • codeManager which uses the CodeManager class

You can learn more about these in the JSDoc of the individual classes.

See also

This has been done before with Java and JavaFX, see LowerAlpha. This project aims to be more robust, reliable and user friendly than LowerAlpha.

About

No description, website, or topics provided.

Resources

Readme
Activity

Stars

0 stars

Watchers

1 watching

Forks

0 forks
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Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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BranchesTags
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Alpha Runtime
Alpha Runtime provides a way to execute programs written in the assemlber language "α-Notation".
The α-Notation is originally a pseudo assembler language that I got introduced to in the module "Systemnahme Informatik (SS 2021)" at Uni Bonn.
It is a simplified assembler for educational purposes.
How to use
Here's the starter template for Node.js and ES6 JS. Make sure to check out the JSDoc documentation for more detailed information!
Node.js (Typescript)
importexecutefrom'./alpha-runtime/Executor'importparsefrom'./alpha-runtime/Parser'constcode=String(readFileSync('./alpha-runtime/tests/programs/add42.alpha','utf8'));constprogram=parse(code);construntimeState=execute(program);// do something with the resulting runtimeState
You can create a own Runtime object with custom callback functions and pass this runtime into the execute function.
construntime=newRuntime(program,{onMemoryWrite: (writeAddress: String,newValue: number,wasInitialized: boolean)=>console.log('memory write'),onStackChange: (value: number,type: OnStackChangeEventType)=>console.log('stack change'),onCallStackChange?: (value: number,type: OnStackChangeEventType)=>console.log('call stack change'),onInstructionPointerChange?: (value: number)=>console.log('instruction pointer change'),onProgramEnd?: ()=>console.log('end of program')});construntimeState=execute(program,runtime);
ES6 JS
Make sure to build everything via webpack
npminpmrunbuild
<scriptsrc='./alpha-runtime/dist/index.js'></script><script>letcode="ρ(1) := 10;\nρ(2) := 32;\nρ(result) := ρ(1) + ρ(2);"letprogram=parse(code);letruntimeState=execute(program);</script>
Structure
  • parse() takes a string and convertes it into an AST. This is done via a PEGJS grammar that combines lexer and parser.
  • execute() operates on a program and a runtime and keeps executing the next statement until the program halts.
  • Runtime consists of 4 parts:

    • stack and callstack, which both use the custom Stack class
    • memory which uses the custom Memory class
    • codeManager which uses the CodeManager class
You can learn more about these in the JSDoc of the individual classes.
See also
This has been done before with Java and JavaFX, see LowerAlpha.
This project aims to be more robust, reliable and user friendly than LowerAlpha.
About
No description, website, or topics provided.
Resources
Readme
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
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Alpha Runtime
Alpha Runtime provides a way to execute programs written in the assemlber language "α-Notation".
The α-Notation is originally a pseudo assembler language that I got introduced to in the module "Systemnahme Informatik (SS 2021)" at Uni Bonn.
It is a simplified assembler for educational purposes.
How to use
Here's the starter template for Node.js and ES6 JS. Make sure to check out the JSDoc documentation for more detailed information!
Node.js (Typescript)
importexecutefrom'./alpha-runtime/Executor'importparsefrom'./alpha-runtime/Parser'constcode=String(readFileSync('./alpha-runtime/tests/programs/add42.alpha','utf8'));constprogram=parse(code);construntimeState=execute(program);// do something with the resulting runtimeState
You can create a own Runtime object with custom callback functions and pass this runtime into the execute function.
construntime=newRuntime(program,{onMemoryWrite: (writeAddress: String,newValue: number,wasInitialized: boolean)=>console.log('memory write'),onStackChange: (value: number,type: OnStackChangeEventType)=>console.log('stack change'),onCallStackChange?: (value: number,type: OnStackChangeEventType)=>console.log('call stack change'),onInstructionPointerChange?: (value: number)=>console.log('instruction pointer change'),onProgramEnd?: ()=>console.log('end of program')});construntimeState=execute(program,runtime);
ES6 JS
Make sure to build everything via webpack
npminpmrunbuild
<scriptsrc='./alpha-runtime/dist/index.js'></script><script>letcode="ρ(1) := 10;\nρ(2) := 32;\nρ(result) := ρ(1) + ρ(2);"letprogram=parse(code);letruntimeState=execute(program);</script>
Structure
  • parse() takes a string and convertes it into an AST. This is done via a PEGJS grammar that combines lexer and parser.
  • execute() operates on a program and a runtime and keeps executing the next statement until the program halts.
  • Runtime consists of 4 parts:

    • stack and callstack, which both use the custom Stack class
    • memory which uses the custom Memory class
    • codeManager which uses the CodeManager class
You can learn more about these in the JSDoc of the individual classes.
See also
This has been done before with Java and JavaFX, see LowerAlpha.
This project aims to be more robust, reliable and user friendly than LowerAlpha.
About
No description, website, or topics provided.
Resources
Readme
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
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Alpha Runtime
Alpha Runtime provides a way to execute programs written in the assemlber language "α-Notation".
The α-Notation is originally a pseudo assembler language that I got introduced to in the module "Systemnahme Informatik (SS 2021)" at Uni Bonn.
It is a simplified assembler for educational purposes.
How to use
Here's the starter template for Node.js and ES6 JS. Make sure to check out the JSDoc documentation for more detailed information!
Node.js (Typescript)
importexecutefrom'./alpha-runtime/Executor'importparsefrom'./alpha-runtime/Parser'constcode=String(readFileSync('./alpha-runtime/tests/programs/add42.alpha','utf8'));constprogram=parse(code);construntimeState=execute(program);// do something with the resulting runtimeState
You can create a own Runtime object with custom callback functions and pass this runtime into the execute function.
construntime=newRuntime(program,{onMemoryWrite: (writeAddress: String,newValue: number,wasInitialized: boolean)=>console.log('memory write'),onStackChange: (value: number,type: OnStackChangeEventType)=>console.log('stack change'),onCallStackChange?: (value: number,type: OnStackChangeEventType)=>console.log('call stack change'),onInstructionPointerChange?: (value: number)=>console.log('instruction pointer change'),onProgramEnd?: ()=>console.log('end of program')});construntimeState=execute(program,runtime);
ES6 JS
Make sure to build everything via webpack
npminpmrunbuild
<scriptsrc='./alpha-runtime/dist/index.js'></script><script>letcode="ρ(1) := 10;\nρ(2) := 32;\nρ(result) := ρ(1) + ρ(2);"letprogram=parse(code);letruntimeState=execute(program);</script>
Structure
  • parse() takes a string and convertes it into an AST. This is done via a PEGJS grammar that combines lexer and parser.
  • execute() operates on a program and a runtime and keeps executing the next statement until the program halts.
  • Runtime consists of 4 parts:

    • stack and callstack, which both use the custom Stack class
    • memory which uses the custom Memory class
    • codeManager which uses the CodeManager class
You can learn more about these in the JSDoc of the individual classes.
See also
This has been done before with Java and JavaFX, see LowerAlpha.
This project aims to be more robust, reliable and user friendly than LowerAlpha.
About
No description, website, or topics provided.
Resources
Readme
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
Alpha Runtime
Alpha Runtime provides a way to execute programs written in the assemlber language "α-Notation".
The α-Notation is originally a pseudo assembler language that I got introduced to in the module "Systemnahme Informatik (SS 2021)" at Uni Bonn.
It is a simplified assembler for educational purposes.
How to use
Here's the starter template for Node.js and ES6 JS. Make sure to check out the JSDoc documentation for more detailed information!
Node.js (Typescript)
importexecutefrom'./alpha-runtime/Executor'importparsefrom'./alpha-runtime/Parser'constcode=String(readFileSync('./alpha-runtime/tests/programs/add42.alpha','utf8'));constprogram=parse(code);construntimeState=execute(program);// do something with the resulting runtimeState
You can create a own Runtime object with custom callback functions and pass this runtime into the execute function.
construntime=newRuntime(program,{onMemoryWrite: (writeAddress: String,newValue: number,wasInitialized: boolean)=>console.log('memory write'),onStackChange: (value: number,type: OnStackChangeEventType)=>console.log('stack change'),onCallStackChange?: (value: number,type: OnStackChangeEventType)=>console.log('call stack change'),onInstructionPointerChange?: (value: number)=>console.log('instruction pointer change'),onProgramEnd?: ()=>console.log('end of program')});construntimeState=execute(program,runtime);
ES6 JS
Make sure to build everything via webpack
npminpmrunbuild
<scriptsrc='./alpha-runtime/dist/index.js'></script><script>letcode="ρ(1) := 10;\nρ(2) := 32;\nρ(result) := ρ(1) + ρ(2);"letprogram=parse(code);letruntimeState=execute(program);</script>
Structure
  • parse() takes a string and convertes it into an AST. This is done via a PEGJS grammar that combines lexer and parser.
  • execute() operates on a program and a runtime and keeps executing the next statement until the program halts.
  • Runtime consists of 4 parts:

    • stack and callstack, which both use the custom Stack class
    • memory which uses the custom Memory class
    • codeManager which uses the CodeManager class
You can learn more about these in the JSDoc of the individual classes.
See also
This has been done before with Java and JavaFX, see LowerAlpha.
This project aims to be more robust, reliable and user friendly than LowerAlpha.
About
No description, website, or topics provided.
Resources
Readme
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Alpha Runtime
Alpha Runtime provides a way to execute programs written in the assemlber language "α-Notation".
The α-Notation is originally a pseudo assembler language that I got introduced to in the module "Systemnahme Informatik (SS 2021)" at Uni Bonn.
It is a simplified assembler for educational purposes.
How to use
Here's the starter template for Node.js and ES6 JS. Make sure to check out the JSDoc documentation for more detailed information!
Node.js (Typescript)
importexecutefrom'./alpha-runtime/Executor'importparsefrom'./alpha-runtime/Parser'constcode=String(readFileSync('./alpha-runtime/tests/programs/add42.alpha','utf8'));constprogram=parse(code);construntimeState=execute(program);// do something with the resulting runtimeState
You can create a own Runtime object with custom callback functions and pass this runtime into the execute function.
construntime=newRuntime(program,{onMemoryWrite: (writeAddress: String,newValue: number,wasInitialized: boolean)=>console.log('memory write'),onStackChange: (value: number,type: OnStackChangeEventType)=>console.log('stack change'),onCallStackChange?: (value: number,type: OnStackChangeEventType)=>console.log('call stack change'),onInstructionPointerChange?: (value: number)=>console.log('instruction pointer change'),onProgramEnd?: ()=>console.log('end of program')});construntimeState=execute(program,runtime);
ES6 JS
Make sure to build everything via webpack
npminpmrunbuild
<scriptsrc='./alpha-runtime/dist/index.js'></script><script>letcode="ρ(1) := 10;\nρ(2) := 32;\nρ(result) := ρ(1) + ρ(2);"letprogram=parse(code);letruntimeState=execute(program);</script>
Structure
  • parse() takes a string and convertes it into an AST. This is done via a PEGJS grammar that combines lexer and parser.
  • execute() operates on a program and a runtime and keeps executing the next statement until the program halts.
  • Runtime consists of 4 parts:

    • stack and callstack, which both use the custom Stack class
    • memory which uses the custom Memory class
    • codeManager which uses the CodeManager class
You can learn more about these in the JSDoc of the individual classes.
See also
This has been done before with Java and JavaFX, see LowerAlpha.
This project aims to be more robust, reliable and user friendly than LowerAlpha.
About
No description, website, or topics provided.
Resources
Readme
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Alpha Runtime
Alpha Runtime provides a way to execute programs written in the assemlber language "α-Notation".
The α-Notation is originally a pseudo assembler language that I got introduced to in the module "Systemnahme Informatik (SS 2021)" at Uni Bonn.
It is a simplified assembler for educational purposes.
How to use
Here's the starter template for Node.js and ES6 JS. Make sure to check out the JSDoc documentation for more detailed information!
Node.js (Typescript)
importexecutefrom'./alpha-runtime/Executor'importparsefrom'./alpha-runtime/Parser'constcode=String(readFileSync('./alpha-runtime/tests/programs/add42.alpha','utf8'));constprogram=parse(code);construntimeState=execute(program);// do something with the resulting runtimeState
You can create a own Runtime object with custom callback functions and pass this runtime into the execute function.
construntime=newRuntime(program,{onMemoryWrite: (writeAddress: String,newValue: number,wasInitialized: boolean)=>console.log('memory write'),onStackChange: (value: number,type: OnStackChangeEventType)=>console.log('stack change'),onCallStackChange?: (value: number,type: OnStackChangeEventType)=>console.log('call stack change'),onInstructionPointerChange?: (value: number)=>console.log('instruction pointer change'),onProgramEnd?: ()=>console.log('end of program')});construntimeState=execute(program,runtime);
ES6 JS
Make sure to build everything via webpack
npminpmrunbuild
<scriptsrc='./alpha-runtime/dist/index.js'></script><script>letcode="ρ(1) := 10;\nρ(2) := 32;\nρ(result) := ρ(1) + ρ(2);"letprogram=parse(code);letruntimeState=execute(program);</script>
Structure
  • parse() takes a string and convertes it into an AST. This is done via a PEGJS grammar that combines lexer and parser.
  • execute() operates on a program and a runtime and keeps executing the next statement until the program halts.
  • Runtime consists of 4 parts:

    • stack and callstack, which both use the custom Stack class
    • memory which uses the custom Memory class
    • codeManager which uses the CodeManager class
You can learn more about these in the JSDoc of the individual classes.
See also
This has been done before with Java and JavaFX, see LowerAlpha.
This project aims to be more robust, reliable and user friendly than LowerAlpha.
About
No description, website, or topics provided.
Resources
Readme
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

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Alpha Runtime
Alpha Runtime provides a way to execute programs written in the assemlber language "α-Notation".
The α-Notation is originally a pseudo assembler language that I got introduced to in the module "Systemnahme Informatik (SS 2021)" at Uni Bonn.
It is a simplified assembler for educational purposes.
How to use
Here's the starter template for Node.js and ES6 JS. Make sure to check out the JSDoc documentation for more detailed information!
Node.js (Typescript)
importexecutefrom'./alpha-runtime/Executor'importparsefrom'./alpha-runtime/Parser'constcode=String(readFileSync('./alpha-runtime/tests/programs/add42.alpha','utf8'));constprogram=parse(code);construntimeState=execute(program);// do something with the resulting runtimeState
You can create a own Runtime object with custom callback functions and pass this runtime into the execute function.
construntime=newRuntime(program,{onMemoryWrite: (writeAddress: String,newValue: number,wasInitialized: boolean)=>console.log('memory write'),onStackChange: (value: number,type: OnStackChangeEventType)=>console.log('stack change'),onCallStackChange?: (value: number,type: OnStackChangeEventType)=>console.log('call stack change'),onInstructionPointerChange?: (value: number)=>console.log('instruction pointer change'),onProgramEnd?: ()=>console.log('end of program')});construntimeState=execute(program,runtime);
ES6 JS
Make sure to build everything via webpack
npminpmrunbuild
<scriptsrc='./alpha-runtime/dist/index.js'></script><script>letcode="ρ(1) := 10;\nρ(2) := 32;\nρ(result) := ρ(1) + ρ(2);"letprogram=parse(code);letruntimeState=execute(program);</script>
Structure
  • parse() takes a string and convertes it into an AST. This is done via a PEGJS grammar that combines lexer and parser.
  • execute() operates on a program and a runtime and keeps executing the next statement until the program halts.
  • Runtime consists of 4 parts:

    • stack and callstack, which both use the custom Stack class
    • memory which uses the custom Memory class
    • codeManager which uses the CodeManager class
You can learn more about these in the JSDoc of the individual classes.
See also
This has been done before with Java and JavaFX, see LowerAlpha.
This project aims to be more robust, reliable and user friendly than LowerAlpha.
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