feat: add a parser - #17

Merged
hargoniX merged 15 commits into
masterfrom
joachim/parser
Feb 6, 2026
Merged

feat: add a parser#17
hargoniX merged 15 commits into
masterfrom
joachim/parser

Conversation

@nomeata

@nomeatanomeata commented Feb 3, 2026

Copy link
Copy Markdown
Contributor

This adds a parser for the lean4export format. It is based on #12 and the latest format iteration from #16.

This was referenced Feb 3, 2026
Closed
Merged
@nomeata
nomeata marked this pull request as ready for review February 3, 2026 11:54
Julian
Julian reviewed Feb 3, 2026
View reviewed changes

@JulianJulian left a comment

Copy link
Copy Markdown
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Some minor spelling

Comment threadformat_ndjson.md Outdated
Comment threadformat_ndjson.md Outdated
Comment threadformat_ndjson.md Outdated
Comment threadExport/Parse.lean
recs.forM parseRecInfo

def parseItem (line : String) : M Unit := do
let obj ← parseJsonObj line

@JulianJulianFeb 3, 2026

Copy link
Copy Markdown
Contributor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Since I had the same big if statement show up in my parser -- would it be helpful to document what order to micro-optimize the branches in somewhere based on frequency of what appears in the wild (e.g. I assume app belongs way higher).

(Obviously not highly relevant to this PR itself).

@nomeatanomeataFeb 3, 2026

Copy link
Copy Markdown
ContributorAuthor

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I'd be somewhat surprised if that makes a measurable difference, but feel free to gather that data from a mathlib dump and put it somewhere (maybe a comment at the bottom of the format description)

Julian added a commit to Julian/rpylean that referenced this pull request Feb 3, 2026
@Julian
Port to export format 3.1.0.
126a498
(In particular, mutual defs and theorems don't exist.)
Refs: leanprover/lean4export#17
@hargoniX
hargoniX merged commit 86a1f98 into masterFeb 6, 2026
1 check passed
Sign up for freeto join this conversation on GitHub. Already have an account? Sign in to comment

Reviewers

1 more reviewer
@JulianJulianJulian left review comments
Reviewers whose approvals may not affect merge requirements

Assignees

No one assigned

Labels

None yet

Projects

None yet

Milestone

No milestone

Development

Successfully merging this pull request may close these issues.

3 participants

@nomeata@Julian@hargoniX
, '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" + '

Skip to content
feat: add a parser - #17
Merged
hargoniX merged 15 commits into
masterfrom 
joachim/parser
Feb 6, 2026
Merged
feat: add a parser#17
hargoniX merged 15 commits into
masterfrom 
joachim/parser
Conversation
@nomeata
@nomeatanomeata
commented
Feb 3, 2026

Copy link


Copy Markdown

Contributor
This adds a parser for the lean4export format. It is based on #12 and the latest format iteration from #16.

This was referenced Feb 3, 2026
 Closed

 Merged

@nomeata
nomeata
marked this pull request as ready for review
February 3, 2026 11:54
Julian
Julian
reviewed
Feb 3, 2026
View reviewed changes
@JulianJulian
left a comment


Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Some minor spelling
Comment threadformat_ndjson.md
Outdated

Comment threadformat_ndjson.md
Outdated

Comment threadformat_ndjson.md
Outdated

Comment threadExport/Parse.lean
 recs.forM parseRecInfo

def parseItem (line : String) : M Unit := do
 let obj ← parseJsonObj line
@JulianJulianFeb 3, 2026

Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Since I had the same big if statement show up in my parser -- would it be helpful to document what order to micro-optimize the branches in somewhere based on frequency of what appears in the wild (e.g. I assume app belongs way higher).
(Obviously not highly relevant to this PR itself).
@nomeatanomeataFeb 3, 2026

Copy link


Copy Markdown

ContributorAuthor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I'd be somewhat surprised if that makes a measurable difference, but feel free to gather that data from a mathlib dump and put it somewhere (maybe a comment at the bottom of the format description)
Julian added a commit
to Julian/rpylean
that referenced
this pull request
Feb 3, 2026
@Julian
Port to export format 3.1.0.
126a498
(In particular, mutual defs and theorems don't exist.)
Refs: leanprover/lean4export#17
@hargoniX
hargoniX
merged commit 86a1f98
into
masterFeb 6, 2026

1 check passed

Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


1 more reviewer

@JulianJulianJulian left review comments
Reviewers whose approvals may not affect merge requirements

Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

3 participants

@nomeata@Julian@hargoniX

, '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
feat: add a parser - #17
Merged
hargoniX merged 15 commits into
masterfrom 
joachim/parser
Feb 6, 2026
Merged
feat: add a parser#17
hargoniX merged 15 commits into
masterfrom 
joachim/parser
Conversation
@nomeata
@nomeatanomeata
commented
Feb 3, 2026

Copy link


Copy Markdown

Contributor
This adds a parser for the lean4export format. It is based on #12 and the latest format iteration from #16.

This was referenced Feb 3, 2026
 Closed

 Merged

@nomeata
nomeata
marked this pull request as ready for review
February 3, 2026 11:54
Julian
Julian
reviewed
Feb 3, 2026
View reviewed changes
@JulianJulian
left a comment


Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Some minor spelling
Comment threadformat_ndjson.md
Outdated

Comment threadformat_ndjson.md
Outdated

Comment threadformat_ndjson.md
Outdated

Comment threadExport/Parse.lean
 recs.forM parseRecInfo

def parseItem (line : String) : M Unit := do
 let obj ← parseJsonObj line
@JulianJulianFeb 3, 2026

Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Since I had the same big if statement show up in my parser -- would it be helpful to document what order to micro-optimize the branches in somewhere based on frequency of what appears in the wild (e.g. I assume app belongs way higher).
(Obviously not highly relevant to this PR itself).
@nomeatanomeataFeb 3, 2026

Copy link


Copy Markdown

ContributorAuthor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I'd be somewhat surprised if that makes a measurable difference, but feel free to gather that data from a mathlib dump and put it somewhere (maybe a comment at the bottom of the format description)
Julian added a commit
to Julian/rpylean
that referenced
this pull request
Feb 3, 2026
@Julian
Port to export format 3.1.0.
126a498
(In particular, mutual defs and theorems don't exist.)
Refs: leanprover/lean4export#17
@hargoniX
hargoniX
merged commit 86a1f98
into
masterFeb 6, 2026

1 check passed

Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


1 more reviewer

@JulianJulianJulian left review comments
Reviewers whose approvals may not affect merge requirements

Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

3 participants

@nomeata@Julian@hargoniX

, '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
feat: add a parser - #17
Merged
hargoniX merged 15 commits into
masterfrom 
joachim/parser
Feb 6, 2026
Merged
feat: add a parser#17
hargoniX merged 15 commits into
masterfrom 
joachim/parser
Conversation
@nomeata
@nomeatanomeata
commented
Feb 3, 2026

Copy link


Copy Markdown

Contributor
This adds a parser for the lean4export format. It is based on #12 and the latest format iteration from #16.

This was referenced Feb 3, 2026
 Closed

 Merged

@nomeata
nomeata
marked this pull request as ready for review
February 3, 2026 11:54
Julian
Julian
reviewed
Feb 3, 2026
View reviewed changes
@JulianJulian
left a comment


Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Some minor spelling
Comment threadformat_ndjson.md
Outdated

Comment threadformat_ndjson.md
Outdated

Comment threadformat_ndjson.md
Outdated

Comment threadExport/Parse.lean
 recs.forM parseRecInfo

def parseItem (line : String) : M Unit := do
 let obj ← parseJsonObj line
@JulianJulianFeb 3, 2026

Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Since I had the same big if statement show up in my parser -- would it be helpful to document what order to micro-optimize the branches in somewhere based on frequency of what appears in the wild (e.g. I assume app belongs way higher).
(Obviously not highly relevant to this PR itself).
@nomeatanomeataFeb 3, 2026

Copy link


Copy Markdown

ContributorAuthor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I'd be somewhat surprised if that makes a measurable difference, but feel free to gather that data from a mathlib dump and put it somewhere (maybe a comment at the bottom of the format description)
Julian added a commit
to Julian/rpylean
that referenced
this pull request
Feb 3, 2026
@Julian
Port to export format 3.1.0.
126a498
(In particular, mutual defs and theorems don't exist.)
Refs: leanprover/lean4export#17
@hargoniX
hargoniX
merged commit 86a1f98
into
masterFeb 6, 2026

1 check passed

Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


1 more reviewer

@JulianJulianJulian left review comments
Reviewers whose approvals may not affect merge requirements

Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

3 participants

@nomeata@Julian@hargoniX

, '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
feat: add a parser - #17
Merged
hargoniX merged 15 commits into
masterfrom 
joachim/parser
Feb 6, 2026
Merged
feat: add a parser#17
hargoniX merged 15 commits into
masterfrom 
joachim/parser
Conversation
@nomeata
@nomeatanomeata
commented
Feb 3, 2026

Copy link


Copy Markdown

Contributor
This adds a parser for the lean4export format. It is based on #12 and the latest format iteration from #16.

This was referenced Feb 3, 2026
 Closed

 Merged

@nomeata
nomeata
marked this pull request as ready for review
February 3, 2026 11:54
Julian
Julian
reviewed
Feb 3, 2026
View reviewed changes
@JulianJulian
left a comment


Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Some minor spelling
Comment threadformat_ndjson.md
Outdated

Comment threadformat_ndjson.md
Outdated

Comment threadformat_ndjson.md
Outdated

Comment threadExport/Parse.lean
 recs.forM parseRecInfo

def parseItem (line : String) : M Unit := do
 let obj ← parseJsonObj line
@JulianJulianFeb 3, 2026

Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Since I had the same big if statement show up in my parser -- would it be helpful to document what order to micro-optimize the branches in somewhere based on frequency of what appears in the wild (e.g. I assume app belongs way higher).
(Obviously not highly relevant to this PR itself).
@nomeatanomeataFeb 3, 2026

Copy link


Copy Markdown

ContributorAuthor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I'd be somewhat surprised if that makes a measurable difference, but feel free to gather that data from a mathlib dump and put it somewhere (maybe a comment at the bottom of the format description)
Julian added a commit
to Julian/rpylean
that referenced
this pull request
Feb 3, 2026
@Julian
Port to export format 3.1.0.
126a498
(In particular, mutual defs and theorems don't exist.)
Refs: leanprover/lean4export#17
@hargoniX
hargoniX
merged commit 86a1f98
into
masterFeb 6, 2026

1 check passed

Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


1 more reviewer

@JulianJulianJulian left review comments
Reviewers whose approvals may not affect merge requirements

Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

3 participants

@nomeata@Julian@hargoniX

, '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
feat: add a parser - #17
Merged
hargoniX merged 15 commits into
masterfrom 
joachim/parser
Feb 6, 2026
Merged
feat: add a parser#17
hargoniX merged 15 commits into
masterfrom 
joachim/parser
Conversation
@nomeata
@nomeatanomeata
commented
Feb 3, 2026

Copy link


Copy Markdown

Contributor
This adds a parser for the lean4export format. It is based on #12 and the latest format iteration from #16.

This was referenced Feb 3, 2026
 Closed

 Merged

@nomeata
nomeata
marked this pull request as ready for review
February 3, 2026 11:54
Julian
Julian
reviewed
Feb 3, 2026
View reviewed changes
@JulianJulian
left a comment


Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Some minor spelling
Comment threadformat_ndjson.md
Outdated

Comment threadformat_ndjson.md
Outdated

Comment threadformat_ndjson.md
Outdated

Comment threadExport/Parse.lean
 recs.forM parseRecInfo

def parseItem (line : String) : M Unit := do
 let obj ← parseJsonObj line
@JulianJulianFeb 3, 2026

Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Since I had the same big if statement show up in my parser -- would it be helpful to document what order to micro-optimize the branches in somewhere based on frequency of what appears in the wild (e.g. I assume app belongs way higher).
(Obviously not highly relevant to this PR itself).
@nomeatanomeataFeb 3, 2026

Copy link


Copy Markdown

ContributorAuthor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I'd be somewhat surprised if that makes a measurable difference, but feel free to gather that data from a mathlib dump and put it somewhere (maybe a comment at the bottom of the format description)
Julian added a commit
to Julian/rpylean
that referenced
this pull request
Feb 3, 2026
@Julian
Port to export format 3.1.0.
126a498
(In particular, mutual defs and theorems don't exist.)
Refs: leanprover/lean4export#17
@hargoniX
hargoniX
merged commit 86a1f98
into
masterFeb 6, 2026

1 check passed

Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


1 more reviewer

@JulianJulianJulian left review comments
Reviewers whose approvals may not affect merge requirements

Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

3 participants

@nomeata@Julian@hargoniX

, '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
feat: add a parser - #17
Merged
hargoniX merged 15 commits into
masterfrom 
joachim/parser
Feb 6, 2026
Merged
feat: add a parser#17
hargoniX merged 15 commits into
masterfrom 
joachim/parser
Conversation
@nomeata
@nomeatanomeata
commented
Feb 3, 2026

Copy link


Copy Markdown

Contributor
This adds a parser for the lean4export format. It is based on #12 and the latest format iteration from #16.

This was referenced Feb 3, 2026
 Closed

 Merged

@nomeata
nomeata
marked this pull request as ready for review
February 3, 2026 11:54
Julian
Julian
reviewed
Feb 3, 2026
View reviewed changes
@JulianJulian
left a comment


Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Some minor spelling
Comment threadformat_ndjson.md
Outdated

Comment threadformat_ndjson.md
Outdated

Comment threadformat_ndjson.md
Outdated

Comment threadExport/Parse.lean
 recs.forM parseRecInfo

def parseItem (line : String) : M Unit := do
 let obj ← parseJsonObj line
@JulianJulianFeb 3, 2026

Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Since I had the same big if statement show up in my parser -- would it be helpful to document what order to micro-optimize the branches in somewhere based on frequency of what appears in the wild (e.g. I assume app belongs way higher).
(Obviously not highly relevant to this PR itself).
@nomeatanomeataFeb 3, 2026

Copy link


Copy Markdown

ContributorAuthor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I'd be somewhat surprised if that makes a measurable difference, but feel free to gather that data from a mathlib dump and put it somewhere (maybe a comment at the bottom of the format description)
Julian added a commit
to Julian/rpylean
that referenced
this pull request
Feb 3, 2026
@Julian
Port to export format 3.1.0.
126a498
(In particular, mutual defs and theorems don't exist.)
Refs: leanprover/lean4export#17
@hargoniX
hargoniX
merged commit 86a1f98
into
masterFeb 6, 2026

1 check passed

Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


1 more reviewer

@JulianJulianJulian left review comments
Reviewers whose approvals may not affect merge requirements

Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

3 participants

@nomeata@Julian@hargoniX

, '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); }
})();
})();

Skip to content
feat: add a parser - #17
Merged
hargoniX merged 15 commits into
masterfrom 
joachim/parser
Feb 6, 2026
Merged
feat: add a parser#17
hargoniX merged 15 commits into
masterfrom 
joachim/parser
Conversation
@nomeata
@nomeatanomeata
commented
Feb 3, 2026

Copy link


Copy Markdown

Contributor
This adds a parser for the lean4export format. It is based on #12 and the latest format iteration from #16.

This was referenced Feb 3, 2026
 Closed

 Merged

@nomeata
nomeata
marked this pull request as ready for review
February 3, 2026 11:54
Julian
Julian
reviewed
Feb 3, 2026
View reviewed changes
@JulianJulian
left a comment


Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Some minor spelling
Comment threadformat_ndjson.md
Outdated

Comment threadformat_ndjson.md
Outdated

Comment threadformat_ndjson.md
Outdated

Comment threadExport/Parse.lean
 recs.forM parseRecInfo

def parseItem (line : String) : M Unit := do
 let obj ← parseJsonObj line
@JulianJulianFeb 3, 2026

Copy link


Copy Markdown

Contributor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

Since I had the same big if statement show up in my parser -- would it be helpful to document what order to micro-optimize the branches in somewhere based on frequency of what appears in the wild (e.g. I assume app belongs way higher).
(Obviously not highly relevant to this PR itself).
@nomeatanomeataFeb 3, 2026

Copy link


Copy Markdown

ContributorAuthor
Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

I'd be somewhat surprised if that makes a measurable difference, but feel free to gather that data from a mathlib dump and put it somewhere (maybe a comment at the bottom of the format description)
Julian added a commit
to Julian/rpylean
that referenced
this pull request
Feb 3, 2026
@Julian
Port to export format 3.1.0.
126a498
(In particular, mutual defs and theorems don't exist.)
Refs: leanprover/lean4export#17
@hargoniX
hargoniX
merged commit 86a1f98
into
masterFeb 6, 2026

1 check passed

Sign up for freeto join this conversation on GitHub.
Already have an account?
Sign in to comment

Reviewers


1 more reviewer

@JulianJulianJulian left review comments
Reviewers whose approvals may not affect merge requirements

Assignees


No one assigned


Labels


None yet


Projects


None yet


Milestone


No milestone


Development

Successfully merging this pull request may close these issues.

3 participants

@nomeata@Julian@hargoniX