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1095 lines (949 loc) · 51.3 KB
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Runner</title>
<script>
(function () {
const folder = new URLSearchParams(window.location.search).get('folder');
if (folder) document.title = folder.replace(/\/$/, '').split('/').pop();
})();
</script>
<link rel="stylesheet" href="https://pyscript.net/releases/2024.1.1/core.css">
<script type="module" src="https://pyscript.net/releases/2024.1.1/core.js"></script>
<!-- The old p5 library -->
<script src="https://cdn.jsdelivr.net/npm/p5@1.11.11/lib/p5.min.js"></script>
<!-- The new p5 library
<script src="https://cdn.jsdelivr.net/npm/p5@2.3.0/lib/p5.min.js"></script> -->
<!-- Monkey-patch: fix p5.js shaderSrc() splitting on "void main" substring.
The original code does src.split('void main') which breaks when that
substring appears elsewhere (e.g. "void mainImage" or in comments).
We pre-process the source so that only the real void main() survives
the split, then restore the original text after the split. -->
<script>
(function () {
if (typeof p5 === 'undefined' || !p5.Shader) return;
const _origShaderSrc = p5.Shader.prototype.shaderSrc;
p5.Shader.prototype.shaderSrc = function (src, shaderType) {
if (!src || !src.includes('void main')) {
return _origShaderSrc.call(this, src, shaderType);
}
// Temporarily replace every "void main" that is NOT followed by
// optional whitespace + "(" (i.e. not the real declaration) with a
// sentinel that won't match the split.
const sentinel = '\x00VOIDMAIN\x00';
const safe = src.replace(/void\s+main(?!\s*\()/g, sentinel);
const result = _origShaderSrc.call(this, safe, shaderType);
// Restore any sentinels back to the original text.
return result.replace(new RegExp(sentinel, 'g'), 'void main');
};
})();
</script>
<style>
body {
margin: 0;
padding: 0;
overflow: hidden;
}
main {
display: flex;
justify-content: center;
align-items: center;
height: 100vh;
}
canvas {
display: block;
}
</style>
</head>
<body>
<script>
// Capture the original console.error before any overrides, so we can
// call it directly without triggering the intercept (prevents infinite loops).
const _origConsoleError = console.error.bind(console);
// Display an error banner on-screen (standalone mode).
function _showError(message) {
let errDiv = document.getElementById('py5-error');
if (!errDiv) {
errDiv = document.createElement('div');
errDiv.id = 'py5-error';
errDiv.style.cssText = 'position:fixed;top:0;left:0;right:0;background:#c00;color:#fff;padding:8px 12px;font:13px/1.5 monospace;white-space:pre-wrap;z-index:9999;';
document.body.appendChild(errDiv);
}
errDiv.textContent += message + '\n';
}
// ---- Print console overlay ----
// Hidden by default. A toggle button at the bottom-right corner shows/hides it.
// Receives raw chunks from StdoutCatcher — print("hi") sends "hi" then "\n".
let _printOutput = null, _printPanel = null, _printBtn = null, _unreadLines = 0;
function _ensurePrintUI() {
if (_printPanel) return;
// Panel
_printPanel = document.createElement('div');
_printPanel.id = 'py5-print';
_printPanel.style.cssText =
'display:none;position:fixed;bottom:0;left:0;right:0;height:140px;' +
'background:rgba(0,0,0,0.78);color:#e8e8e8;font:12px/1.5 monospace;' +
'white-space:pre-wrap;z-index:9998;box-sizing:border-box;';
// Drag-to-resize handle at the top edge
const handle = document.createElement('div');
handle.style.cssText =
'position:absolute;top:0;left:0;right:0;height:6px;' +
'cursor:ns-resize;background:rgba(255,255,255,0.13);';
_printPanel.appendChild(handle);
// Scrollable output area
_printOutput = document.createElement('div');
_printOutput.style.cssText =
'position:absolute;top:6px;bottom:0;left:0;right:0;' +
'overflow-y:auto;padding:4px 10px;box-sizing:border-box;';
_printPanel.appendChild(_printOutput);
document.body.appendChild(_printPanel);
// Toggle button
_printBtn = document.createElement('button');
_printBtn.style.cssText =
'position:fixed;bottom:8px;right:8px;z-index:9999;' +
'background:rgba(0,0,0,0.55);color:#ddd;border:none;' +
'padding:4px 10px;font:12px monospace;cursor:pointer;' +
'border-radius:4px;user-select:none;';
_printBtn.textContent = '▲ console';
document.body.appendChild(_printBtn);
_printBtn.addEventListener('click', () => {
const opening = _printPanel.style.display === 'none';
_printPanel.style.display = opening ? 'block' : 'none';
_unreadLines = 0;
_refreshBtn();
});
// Resize: drag upward to grow, downward to shrink
let dragY0, dragH0;
handle.addEventListener('mousedown', e => {
dragY0 = e.clientY;
dragH0 = _printPanel.offsetHeight;
e.preventDefault();
const onMove = e2 => {
_printPanel.style.height =
Math.max(48, dragH0 - (e2.clientY - dragY0)) + 'px';
};
const onUp = () => {
document.removeEventListener('mousemove', onMove);
document.removeEventListener('mouseup', onUp);
};
document.addEventListener('mousemove', onMove);
document.addEventListener('mouseup', onUp);
});
}
function _refreshBtn() {
if (!_printBtn) return;
const open = _printPanel && _printPanel.style.display !== 'none';
_printBtn.textContent = open ? '▼ console'
: (_unreadLines ? `▲ console (${_unreadLines})` : '▲ console');
}
function _showPrint(text) {
_ensurePrintUI();
_printOutput.textContent += text;
_printOutput.scrollTop = _printOutput.scrollHeight;
if (_printPanel.style.display === 'none') {
_unreadLines += (text.match(/\n/g) || []).length;
_refreshBtn();
}
}
// Standalone (top-level) mode: create the collapsed console UI up-front so the
// toggle button is always visible from page load — even before, or without, any
// print() output. (In IDE/view iframe mode, prints are forwarded to the parent's
// own console instead, so this overlay stays out of the way.)
if (window.parent === window) {
if (document.body) _ensurePrintUI();
else document.addEventListener('DOMContentLoaded', _ensurePrintUI);
}
// Catch global JS errors (including PythonError from Pyodide)
window.addEventListener('error', function (event) {
let message = "";
if (event.error && event.error.message) {
message = event.error.message;
} else {
message = event.message || String(event);
}
// Ignore duplicate SyntaxErrors (handled by Python logic)
if (message && message.includes('SyntaxError:')) return;
const msg = { type: 'error', message: message };
window.parent.postMessage(msg, '*');
});
// Catch unhandled promise rejections (often used by async Pyodide)
window.addEventListener('unhandledrejection', function (event) {
const message = (event.reason ? event.reason.message || event.reason : "Unknown");
if (message && message.toString().includes('SyntaxError:')) return;
const msg = { type: 'error', message: "Unhandled Rejection: " + message };
window.parent.postMessage(msg, '*');
});
// Loopback message listener for standalone mode.
// Uses _origConsoleError and _showError — never calls the overridden console.error
// to avoid an infinite loop (overridden console.error → postMessage → this listener → ...).
window.addEventListener('message', (event) => {
if (window.parent === window) {
const data = event.data;
if (data && data.type === 'print') {
console.log(data.message);
_showPrint(data.message);
} else if (data && data.type === 'error') {
const msg = data.filename
? `${data.filename}:${data.line} - ${data.message}`
: data.message;
_showError(msg);
_origConsoleError(msg);
}
}
});
// Intercept console.error to catch p5.js internal errors (e.g. shader compilation).
// In iframe (IDE) mode: forward to parent. In standalone mode: show on screen.
// Either way, never re-posts via window.parent when parent === window to avoid loops.
(function () {
console.error = function (...args) {
_origConsoleError.apply(console, args);
const message = args.map(arg => String(arg)).join(' ');
if (window.parent !== window) {
// IDE iframe mode: forward error to the IDE shell
window.parent.postMessage({ type: 'error', message: message }, '*');
} else {
// Standalone mode: display on screen
_showError(message);
}
if (window.currentP5) {
try { window.currentP5.noLoop(); } catch (e) { }
}
};
})();
</script>
<script type="py">
import js
import ast
import textwrap
import sys
import json
import base64
import asyncio
from pyodide.ffi import create_proxy, to_js
# Global P5 instance
P5 = None
# Expose global p5 class
p5 = js.p5
class StdoutCatcher:
def write(self, text):
msg = {"type": "print", "message": text}
js.window.parent.postMessage(to_js(msg, dict_converter=js.Object.fromEntries), "*")
def flush(self):
pass
class StderrCatcher:
def write(self, text):
# Avoid Duplicate SyntaxError messages (handled explicitly by sketch logic)
if text.strip().startswith('SyntaxError:'):
return
msg = {"type": "error", "message": text}
js.window.parent.postMessage(to_js(msg, dict_converter=js.Object.fromEntries), "*")
def flush(self):
pass
# Install Catchers globally immediately
sys.stdout = StdoutCatcher()
sys.stderr = StderrCatcher()
def camel_to_snake(name):
if name.isupper(): return name
import re
s1 = re.sub('(.)([A-Z][a-z]+)', r'\1_\2', name)
return re.sub('([a-z0-9])([A-Z])', r'\1_\2', s1).lower()
class P5Transformer(ast.NodeTransformer):
custom_aliases = {}
def __init__(self, user_defined, case_mode='both'):
# Use prototype to get properties since instance isn't created yet
self.p5_props = set(dir(js.p5.prototype))
# Add common instance properties that aren't on the prototype
self.p5_props.update([
'width', 'height', 'frameCount', 'mouseX', 'mouseY', 'pmouseX', 'pmouseY',
'mouseIsPressed', 'mouseButton', 'keyIsPressed', 'key', 'keyCode',
'pixels', 'touches', 'deltaTime', 'focused'
])
self.user_defined = user_defined
self.case_mode = case_mode
self.scope_stack = []
# Explicitly exclude 'print' and other builtins/globals
# 'label' is often leaked from p5.prototype (as part of internal DOM attributes?) causing confusion.
exclusions = {
'print', 'open', 'exit', 'quit', 'help', 'asset', 'label',
'map', 'set', 'filter', 'min', 'max', 'abs', 'round', 'pow', 'sum',
'random', 'shuffle', 'sort', 'reverse', 'append', 'splice', 'subset',
'join', 'split', 'shorten', 'concat'
}
self.p5_props -= exclusions
self.p5_props.add('drawingContext')
# Build Mapping: snake_case -> camelCase
# Only needed if case_mode is 'snake' or 'both'
self.snake_map = {}
if self.case_mode in ['snake', 'both']:
for prop in self.p5_props:
snake = camel_to_snake(prop)
# Ensure we don't map back to an excluded builtin (e.g. OPEN -> open)
if snake != prop and snake not in exclusions:
self.snake_map[snake] = prop
def resolve_p5_name(self, name):
# 0. Check Scope Stack (Local shadowing)
for scope in self.scope_stack:
if name in scope:
return None
# 0.1 Check custom aliases (e.g. set by hacks.py)
if name in self.custom_aliases:
return self.custom_aliases[name]
# 0.5. Check if already defined in globals (e.g. from hacks.py)
if name in globals():
return None
# 1. Check exact match (CamelCase)
if name in self.p5_props:
if self.case_mode in ['camel', 'both']:
return name
if self.case_mode == 'snake':
return None
# 2. Check snake_case match
if name in self.snake_map:
if self.case_mode in ['snake', 'both']:
return self.snake_map[name]
return None
def analyze_scope(self, node):
"""Collect local variables from a function body (args + assignments), recursively."""
local_vars = set()
# 1. Arguments are always local
for arg in node.args.args:
local_vars.add(arg.arg)
# 2. Recursive traversal for assignments
# We do NOT use generic_visit/NodeVisitor because we need manual control
# to STOP at nested scopes (FunctionDef, ClassDef, Lambda).
def visit_node_scope(n):
if isinstance(n, ast.Assign):
for target in n.targets:
add_target(target)
elif isinstance(n, ast.AnnAssign):
add_target(n.target)
elif isinstance(n, ast.For) or isinstance(n, ast.AsyncFor):
add_target(n.target)
for item in n.body: visit_node_scope(item)
for item in n.orelse: visit_node_scope(item)
elif isinstance(n, ast.With) or isinstance(n, ast.AsyncWith):
for item in n.items:
if item.optional_vars:
add_target(item.optional_vars)
for item in n.body: visit_node_scope(item)
elif isinstance(n, ast.NamedExpr): # walrus operator (a := 1)
add_target(n.target)
# Control Flow - Recurse but don't add vars directly
elif isinstance(n, (ast.If, ast.While, ast.Try)):
for field, value in ast.iter_fields(n):
if isinstance(value, list):
for item in value:
if isinstance(item, ast.AST):
visit_node_scope(item)
elif isinstance(value, ast.AST):
visit_node_scope(value)
# Scopes - STOP recursion into body, but the name itself is local to this scope.
elif isinstance(n, (ast.FunctionDef, ast.AsyncFunctionDef, ast.ClassDef)):
local_vars.add(n.name)
return
elif isinstance(n, ast.Lambda):
return
# Statements - Recurse into lists of statements (like module body or if body)
elif hasattr(n, 'body') and isinstance(n.body, list):
for item in n.body:
visit_node_scope(item)
def add_target(target):
if isinstance(target, ast.Name):
local_vars.add(target.id)
elif isinstance(target, (ast.Tuple, ast.List)):
for elt in target.elts:
add_target(elt)
# Start traversal from function body
for item in node.body:
visit_node_scope(item)
return local_vars
def visit_FunctionDef(self, node):
# Push new scope
local_names = self.analyze_scope(node)
self.scope_stack.append(local_names)
# Visit children (body)
self.generic_visit(node)
# Pop scope
self.scope_stack.pop()
return node
def visit_Call(self, node):
# We do generic_visit first to process arguments
self.generic_visit(node)
if isinstance(node.func, ast.Name):
name = node.func.id
if name == 'print': return node
if name not in self.user_defined:
target = self.resolve_p5_name(name)
if target:
node.func = ast.Attribute(
value=ast.Name(id='P5', ctx=ast.Load()),
attr=target,
ctx=ast.Load()
)
return node
def visit_Name(self, node):
if isinstance(node.ctx, ast.Load):
if node.id not in self.user_defined:
target = self.resolve_p5_name(node.id)
if target:
return ast.Attribute(
value=ast.Name(id='P5', ctx=ast.Load()),
attr=target,
ctx=ast.Load()
)
return node
async def entry_point():
# Standard file IO is sufficient in Pyodide
import os
import importlib.abc
import importlib.util
# Ensure stdout is still set
sys.stdout = StdoutCatcher()
# Parse URL params
params = js.URLSearchParams.new(js.window.location.search)
project_id = params.get('id')
case_mode = params.get('case') or 'both'
raw_window_name = js.window.name or ""
folder = params.get('folder') or ''
base_path = folder.rstrip('/') + '/' if folder else ''
# Will be set to True if no project is loaded from localStorage or via IDE.
# A 'folder' param explicitly selects a standalone sketch on the server, so
# it forces standalone mode even if window.name carries stale content (e.g.
# leftover JSON from a previous IDE/share session in the same browsing context).
is_standalone = False
if folder or (not project_id and not raw_window_name.strip()):
is_standalone = True
# --- Custom Import Hook for Auto-Prefixing in Modules ---
class P5Importer(importlib.abc.MetaPathFinder, importlib.abc.Loader):
def __init__(self, mode):
self.mode = mode
def find_spec(self, fullname, path, target=None):
filename = fullname + ".py"
if os.path.exists(filename):
return importlib.util.spec_from_file_location(fullname, filename, loader=self)
if is_standalone:
try:
# Standalone mode: fetch from server (respecting folder prefix)
req = js.XMLHttpRequest.new()
req.open('GET', base_path + filename, False)
req.send(None)
if req.status == 200:
with open(filename, 'w') as f:
f.write(req.responseText)
return importlib.util.spec_from_file_location(fullname, filename, loader=self)
except Exception:
pass
return None
def create_module(self, spec):
return None
def exec_module(self, module):
with open(module.__file__, 'r') as f:
source = f.read()
try:
tree = ast.parse(source)
except Exception as e:
# Report SyntaxError in module
err_msg = f"{e.__class__.__name__}: {e}"
if isinstance(e, SyntaxError):
err_msg = f"{e.__class__.__name__}: {e.msg}"
line_num = getattr(e, 'lineno', 0)
msg = {"type": "error", "message": err_msg, "filename": module.__file__, "line": line_num}
js.window.parent.postMessage(to_js(msg, dict_converter=js.Object.fromEntries), "*")
raise e
user_defined = set()
for node in tree.body:
if isinstance(node, ast.FunctionDef):
user_defined.add(node.name)
elif isinstance(node, ast.Assign):
for target in node.targets:
if isinstance(target, ast.Name):
user_defined.add(target.id)
elif isinstance(target, ast.Tuple) or isinstance(target, ast.List):
for elt in target.elts:
if isinstance(elt, ast.Name):
user_defined.add(elt.id)
try:
transformer = P5Transformer(user_defined, self.mode)
new_tree = transformer.visit(tree)
ast.fix_missing_locations(new_tree)
code_obj = compile(new_tree, filename=module.__file__, mode="exec")
exec(code_obj, module.__dict__)
except Exception as e:
# Runtime error in module execution
import traceback
# We just propagate it, but the main loop's handler might catch "ImportError",
# so we want to be sure to report the inner detail if possible.
# Actually, posting here is safe.
tb_list = traceback.extract_tb(e.__traceback__)
line_num = 0
err_filename = module.__file__
if tb_list:
last_frame = tb_list[-1]
line_num = last_frame.lineno
err_filename = last_frame.filename
err_msg = f"{e.__class__.__name__}: {e}"
msg = {"type": "error", "message": err_msg, "filename": err_filename, "line": line_num}
js.window.parent.postMessage(to_js(msg, dict_converter=js.Object.fromEntries), "*")
raise e
# Register Hook
sys.meta_path.insert(0, P5Importer(case_mode))
# --- Unified Project Hydration ---
# Parse Project ID from runner URL
params = js.URLSearchParams.new(js.window.location.search)
project_id = params.get('id')
hydrated_assets = {}
if not is_standalone:
try:
project_files_data = None
if project_id:
# --- Try IndexedDB first (new storage backend) ---
try:
idb_read = js.eval("""(function(pid) {
return new Promise(function(resolve) {
var req = indexedDB.open('py5script_db', 1);
req.onsuccess = function(e) {
var db = e.target.result;
if (!db.objectStoreNames.contains('files')) { resolve(null); return; }
var tx = db.transaction(['files'], 'readonly');
var gr = tx.objectStore('files').get(pid);
gr.onsuccess = function() { resolve(gr.result ? gr.result.files : null); };
gr.onerror = function() { resolve(null); };
};
req.onerror = function() { resolve(null); };
});
})""")
idb_files_js = await idb_read(project_id)
if idb_files_js:
project_files_data = json.loads(js.JSON.stringify(idb_files_js))
except Exception:
pass
# --- Fall back to localStorage (legacy) ---
if project_files_data is None:
ls_json = js.localStorage.getItem(f"project_{project_id}_files")
if ls_json:
project_files_data = json.loads(ls_json)
else:
# Very old single-project key
ls_json = js.localStorage.getItem('py5script_project')
if ls_json:
project_files_data = json.loads(ls_json)
if project_files_data:
for filename, content in project_files_data.items():
try:
if content.startswith('data:'):
# Binary asset — decode and write to Pyodide FS
if ',' in content:
_, headerless_data = content.split(',', 1)
binary_data = base64.b64decode(headerless_data)
with open(filename, 'wb') as f:
f.write(binary_data)
hydrated_assets[filename] = content
else:
# Text file (module, shader, …) — write and register as data URL
with open(filename, 'w') as f:
f.write(content)
b64_text = base64.b64encode(content.encode('utf-8')).decode('utf-8')
hydrated_assets[filename] = f"data:text/plain;base64,{b64_text}"
except Exception:
pass
except Exception:
pass
# Pre-fetched sketch source (standalone+folder mode).
# Stored here so sketch() can use it directly without relying on Pyodide's FS.
sketch_source = ''
if is_standalone:
try:
from pyodide.http import pyfetch
# Pre-fetch main sketch file and keep content in a closure variable.
# We also write to the FS so that module imports (P5Importer) can find it,
# but sketch() reads from sketch_source to avoid any FS timing issues.
try:
resp = await pyfetch(base_path + 'sketch.py')
if resp.ok:
sketch_source = await resp.string()
with open('sketch.py', 'w') as f:
f.write(sketch_source)
except Exception as e:
print("Error fetching sketch.py:", e)
for cfg in ["requirements.txt", "js_modules.txt"]:
try:
resp = await pyfetch(base_path + cfg)
if resp.ok:
with open(cfg, "w") as f:
f.write(await resp.string())
except Exception:
pass
except Exception as e:
print("Error initiating standalone pyfetch:", e)
# -----------------------
# --- Package Installation (requirements.txt) ---
if os.path.exists("requirements.txt"):
try:
# Ensure micropip is available
try:
import micropip
except ImportError:
# Attempt to load micropip via Pyodide JS API wrapper
try:
import pyodide_js
await pyodide_js.loadPackage("micropip")
import micropip
except Exception as e:
print(f"Error loading micropip: {e}")
raise e
with open("requirements.txt", "r") as f:
packages = [line.strip() for line in f if line.strip() and not line.startswith('#')]
if packages:
print(f"Installing packages: {packages}...")
await micropip.install(packages)
print("Packages installed.")
except Exception as e:
print(f"Error installing packages: {e}")
# Post error but maybe continue
msg = {"type": "error", "message": f"Failed to install requirements: {e}", "filename": "requirements.txt", "line": 0}
js.window.parent.postMessage(to_js(msg, dict_converter=js.Object.fromEntries), "*")
# ---------------------------------------------
# --- JavaScript Module Loading (js_modules.txt) ---
# Allows users to import ES modules by adding a js_modules.txt file.
# Format: one entry per line — url = alias
# Lines starting with # are comments. Example:
#
# # Tone.js audio synthesis
# https://cdn.jsdelivr.net/npm/tone@14/build/Tone.js = Tone
# https://cdn.jsdelivr.net/npm/chart.js@4/dist/chart.umd.js = Chart
#
# Each alias becomes available as a global in the sketch.
if os.path.exists("js_modules.txt"):
try:
with open("js_modules.txt", "r") as f:
lines = f.readlines()
entries = []
for line in lines:
line = line.strip()
if not line or line.startswith("#"):
continue
if "=" not in line:
continue
url, _, alias = line.partition("=")
url = url.strip()
alias = alias.strip()
if url and alias:
entries.append((url, alias))
if entries:
print(f"Loading JS modules: {[a for _, a in entries]}...")
import builtins
for url, alias in entries:
try:
mod = await js.eval(f"import('{url}')")
globals()[alias] = mod
setattr(builtins, alias, mod)
print(f"JS module '{alias}' loaded from {url}")
except Exception as mod_e:
print(f"Error loading JS module '{alias}' from {url}: {mod_e}")
msg = {"type": "error", "message": f"Failed to load JS module '{alias}': {mod_e}", "filename": "js_modules.txt", "line": 0}
js.window.parent.postMessage(to_js(msg, dict_converter=js.Object.fromEntries), "*")
except Exception as e:
print(f"Error reading js_modules.txt: {e}")
msg = {"type": "error", "message": f"Failed to read js_modules.txt: {e}", "filename": "js_modules.txt", "line": 0}
js.window.parent.postMessage(to_js(msg, dict_converter=js.Object.fromEntries), "*")
# -------------------------------------------------
# Asset Helper (Explicit URL resolution)
def asset(filename):
"""
Returns the Data URL for a given asset filename if it exists.
Otherwise returns the filename itself (fallback).
Usage: p5.loadImage(asset('cat.png'))
"""
if filename in hydrated_assets:
return hydrated_assets[filename]
return filename
# Expose to global scope for user scripts
import builtins
globals()['asset'] = asset
setattr(builtins, 'asset', asset)
# Ensure open is builtins.open (defensive)
globals()['open'] = builtins.open
# --- Pyodide / JS interop helpers (available everywhere, no import needed) ---
from pyodide.ffi import to_js as _to_js, create_proxy as _create_proxy
import js as _js_mod
def js_array(iterable):
"""Convert a Python list or tuple to a JavaScript Array."""
return _to_js(iterable)
def js_object(d):
"""Convert a Python dict to a plain JavaScript object."""
return _to_js(d, dict_converter=_js_mod.Object.fromEntries)
# Inject into globals AND builtins so imported modules get them too
for _name, _val in [
('to_js', _to_js),
('create_proxy', _create_proxy),
('js_array', js_array),
('js_object', js_object),
]:
globals()[_name] = _val
setattr(builtins, _name, _val)
# -------------------------------------------------------------------------
# --- Hacks Loading (hacks.py) ---
try:
from pyodide.http import pyfetch
url = f"hacks.py?t={js.Date.now()}"
resp = await pyfetch(url)
if resp.ok:
hacks_source = await resp.string()
if hacks_source.strip():
try:
hacks_tree = ast.parse(hacks_source)
user_defined_hacks = set()
for node in hacks_tree.body:
if isinstance(node, ast.FunctionDef):
user_defined_hacks.add(node.name)
elif isinstance(node, ast.Assign):
for target in node.targets:
if isinstance(target, ast.Name):
user_defined_hacks.add(target.id)
elif isinstance(target, (ast.Tuple, ast.List)):
for elt in target.elts:
if isinstance(elt, ast.Name):
user_defined_hacks.add(elt.id)
transformer = P5Transformer(user_defined_hacks, case_mode)
new_hacks_tree = transformer.visit(hacks_tree)
ast.fix_missing_locations(new_hacks_tree)
code_obj = compile(new_hacks_tree, filename="hacks.py", mode="exec")
exec(code_obj, globals())
except Exception as e:
err_msg = f"{e.__class__.__name__}: {e}"
if isinstance(e, SyntaxError):
err_msg = f"{e.__class__.__name__}: {e.msg}"
line_num = getattr(e, 'lineno', 0)
msg = {"type": "error", "message": err_msg, "filename": "hacks.py", "line": line_num}
js.window.parent.postMessage(_to_js(msg, dict_converter=js.Object.fromEntries), "*")
except Exception as e:
pass
# -------------------------------------------------------------------------
def sketch(p):
global P5
P5 = p
# Expose to JS for console.error interception
js.window.currentP5 = p
# Inject P5 into builtins so imported modules can access it as 'P5'
import builtins
builtins.P5 = p
builtins.p5 = js.p5 # Global p5 class available everywhere
# Intercept load functions to use Data URLs if available
# This fixes p5.loadImage() failing to fetch local files
#
# Re-entrancy guard: some p5 loaders call other loaders internally
# (loadShader -> loadStrings twice; loadModel -> loadStrings for .obj).
# Both the outer and inner methods are wrapped here, so without a guard
# the base_path / asset resolution would be applied twice, producing
# paths like "folder/folder/shader.glsl" (404). Only the outermost,
# user-facing call resolves arguments; nested calls pass through
# unchanged since their paths were already resolved.
_resolve_depth = [0]
def resolve_asset_path(arg):
"""Resolve a single load() argument: substitute hydrated data URLs
(IDE mode) or prepend the sketch folder (standalone folder mode).
A leading './' is normalized away so it matches asset keys and
joins cleanly with base_path."""
if not isinstance(arg, str):
return arg
clean = arg[2:] if arg.startswith('./') else arg
if clean in hydrated_assets:
return hydrated_assets[clean]
if base_path and not clean.startswith(('http://', 'https://', '//', '/', 'data:')):
return base_path + clean
return arg
def create_asset_loader(original_loader, loader_name):
def wrapper(*args, **kwargs):
if _resolve_depth[0] > 0:
# Nested call from within another wrapped loader:
# paths are already resolved, don't touch them.
return original_loader(*args, **kwargs)
_resolve_depth[0] += 1
try:
new_args = [resolve_asset_path(arg) for arg in args]
return original_loader(*new_args, **kwargs)
finally:
_resolve_depth[0] -= 1
return wrapper
# List of load functions to wrap
load_funcs = ['loadImage', 'loadJSON', 'loadStrings', 'loadTable', 'loadXML', 'loadBytes', 'loadModel', 'loadFont', 'loadSound', 'loadShader']
# The pristine p5 loaders, captured exactly once (the first time we wrap).
# Needed because p5 RESTORES these prototype methods onto the instance in
# _setup() after preload() finishes (see p5 main.js), discarding our
# wrappers. So we must re-install them before the user's setup() runs,
# and we must always re-wrap the pristine original — never a wrapper —
# to avoid double-prefixing.
_pristine_loaders = {}
def install_loaders():
for name in load_funcs:
if hasattr(p, name):
if name not in _pristine_loaders:
_pristine_loaders[name] = getattr(p, name)
setattr(p, name, create_proxy(create_asset_loader(_pristine_loaders[name], name)))
# Wrap now so loaders used inside preload() are intercepted.
install_loaders()
# 1. Get Code & Params
raw_source = js.window.name
source = textwrap.dedent(raw_source)
# In standalone mode the sketch is defined by the file fetched from the
# server, NOT by window.name — which can carry stale JSON/source from a
# previous IDE or share session in the same browsing context. Prefer the
# pre-fetched content (closure var), then the FS copy, and only fall back
# to window.name if neither is available.
if is_standalone:
fetched = sketch_source
if not fetched:
try:
if os.path.exists("sketch.py"):
with open("sketch.py", "r") as f:
fetched = f.read()
except Exception:
pass
if fetched.strip():
source = fetched
if not source.strip():
if is_standalone:
print("Error: Could not find sketch.py on paths. Source is empty!")
return
try:
tree = ast.parse(source)
except Exception as e:
# Captura erro de sintaxe
err_msg = f"{e.__class__.__name__}: {e}"
if isinstance(e, SyntaxError):
err_msg = f"{e.__class__.__name__}: {e.msg}"
line_num = getattr(e, 'lineno', 0)
msg = {"type": "error", "message": err_msg, "filename": "sketch.py", "line": line_num}
js.window.parent.postMessage(to_js(msg, dict_converter=js.Object.fromEntries), "*")
return
# --- STATIC MODE ---
# Detect whether or not a setup function was included.
# If not, copy all the code to the body of a setup function automatically.
has_setup = False
for node in tree.body:
if isinstance(node, ast.FunctionDef) and node.name == 'setup':
has_setup = True
break
if not has_setup:
source = "def setup():\n" + textwrap.indent(source, " ")
try:
tree = ast.parse(source)
except Exception as e:
err_msg = f"{e.__class__.__name__}: {e}"
if isinstance(e, SyntaxError):
err_msg = f"{e.__class__.__name__}: {e.msg}"
line_num = getattr(e, 'lineno', 0)
if line_num > 0:
line_num -= 1
msg = {"type": "error", "message": err_msg, "filename": "sketch.py", "line": line_num}
js.window.parent.postMessage(to_js(msg, dict_converter=js.Object.fromEntries), "*")
return
# -------------------
# Collect user definitions
user_defined = set()
for node in tree.body:
if isinstance(node, ast.FunctionDef):
user_defined.add(node.name)
elif isinstance(node, ast.Assign):
for target in node.targets:
if isinstance(target, ast.Name):
user_defined.add(target.id)
# Tuple unpacking? (a, b) = ...
elif isinstance(target, ast.Tuple) or isinstance(target, ast.List):
for elt in target.elts:
if isinstance(elt, ast.Name):
user_defined.add(elt.id)
# 2. Transform AST
transformer = P5Transformer(user_defined, case_mode)
new_tree = transformer.visit(tree)
ast.fix_missing_locations(new_tree)
# 3. Compile and Execute
try:
code_obj = compile(new_tree, filename="sketch.py", mode="exec")
exec(code_obj, globals())
except Exception as e:
import traceback
import os
err_msg = f"{e.__class__.__name__}: {e}"
line_num = 0
err_filename = "sketch.py"