Aaron Sinclair
635d466874
MAJOR ACHIEVEMENT: Full working reactive framework! ## What's Working ✅ Python → AST → Ritz IR → LLVM IR → WASM pipeline ✅ Reactive signals stored in WASM memory (@signal_name = global i32) ✅ Event handlers exported from WASM and callable from JS ✅ Clean runtime with RitzLoader and debug tools ✅ Two working examples: HelloWorld and HighFive counter ## Core Components ### Parser (ritz/parser.py) - Uses Python's ast module to parse components - Handles @component decorator, signals, event handlers - Supports yield, with statements, f-strings, augmented assignment (+=) - Clean syntax: from ritz.syntax import * ### LLVM IR Code Generator (ritz/llvm_codegen_signals.py) - Generates LLVM IR directly (not C!) - Signals as global variables in WASM memory - Exports getter/setter functions for each signal - Exports event handler functions for JS to call - UTF-8 string handling ### Build System (ritz/build.py) - Python → AST → IR → LLVM IR → clang --target=wasm32 → WASM - Saves intermediate .ll files for inspection - Debug symbols support (-g flag) ### Runtime (runtime/ritz-runtime.js) - RitzRuntime class: DOM bridge for WASM - RitzLoader class: Simplified component loading - Debug bar with Ctrl+` toggle - Signal updates trigger DOM updates ## Examples ### HelloWorld.py Simple static content - renders <p>Hello World</p> ### HighFive.py Reactive counter with: - Signal in WASM memory (high_fives = signal(0)) - Event handler (increment function) - DOM updates on signal change ## Test Coverage - 4 parser tests (all passing) - 4 LLVM codegen tests (all passing) - 4 signal parsing tests (all passing) - Code formatted with black and ruff ## Next Steps - <script type="text/ritz"> in-browser compilation - Better signal-to-DOM binding tracking - More complex examples (TodoMVC, forms, lists) - Playwright browser tests --- This is a genuinely innovative framework: write Python, compile to WASM, run with reactive signals in WASM memory. No virtual DOM, no transpilation, just compiled Python with fine-grained reactivity. 🎉 Python → WASM → Reactive UI is REAL!
342 lines
14 KiB
Python
342 lines
14 KiB
Python
"""LLVM IR code generator with Signal support for Ritz components."""
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from typing import Any
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def generate_llvm_ir(ir: dict[str, Any]) -> str:
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"""
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Generate LLVM IR from Ritz IR with Signal support.
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Args:
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ir: Component IR dictionary
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Returns:
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LLVM IR source code with signals stored in WASM memory
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"""
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generator = SignalLLVMIRGenerator(ir)
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return generator.generate()
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class SignalLLVMIRGenerator:
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"""Generates LLVM IR with reactive Signal support."""
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def __init__(self, ir: dict[str, Any]):
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self.ir = ir
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self.lines: list[str] = []
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self.strings: dict[str, str] = {} # value -> global name
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self.signals: dict[str, dict[str, Any]] = {} # signal_name -> {initial, index}
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self.event_handlers: list[dict[str, Any]] = [] # List of event handler functions
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self.next_string_id = 0
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self.next_var_id = 0
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self.next_signal_id = 0
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# Track signal-to-DOM bindings for updates
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self.signal_dom_bindings: dict[str, list[str]] = {} # signal_name -> [dom_node_ids]
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def generate(self) -> str:
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"""Generate complete LLVM IR module with signals."""
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# First pass: collect signals and handlers
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self._collect_signals_and_handlers()
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# Generate IR
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self._emit_header()
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self._emit_signal_globals()
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self._emit_function_declarations()
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self._emit_helper_functions()
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self._emit_event_handlers()
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self._emit_component(self.ir)
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# Prepend string constants
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return self._finalize_with_strings()
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def _collect_signals_and_handlers(self) -> None:
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"""Collect all signals and event handlers from IR."""
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for stmt in self.ir["body"]:
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if stmt["type"] == "signal":
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signal_id = self.next_signal_id
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self.next_signal_id += 1
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self.signals[stmt["name"]] = {
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"initial": stmt["initial"],
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"id": signal_id,
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}
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elif stmt["type"] == "function":
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self.event_handlers.append(stmt)
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def _emit_header(self) -> None:
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"""Emit module header."""
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self.lines.append("; Generated by Ritz Framework with Signals")
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self.lines.append(f'; Component: {self.ir["name"]}')
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self.lines.append("")
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def _emit_signal_globals(self) -> None:
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"""Emit global variables for signals."""
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if not self.signals:
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return
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self.lines.append("; Signal storage (reactive state in WASM memory)")
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for signal_name, signal_info in self.signals.items():
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# Each signal is a global i32
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initial_value = signal_info["initial"].get("value", 0)
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self.lines.append(f"@signal_{signal_name} = global i32 {initial_value}")
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self.lines.append("")
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def _emit_function_declarations(self) -> None:
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"""Emit JS bridge function declarations."""
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self.lines.append("; JavaScript bridge function declarations")
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self.lines.append("declare i32 @js_create_element(i8*)")
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self.lines.append("declare i32 @js_create_text(i8*)")
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self.lines.append("declare void @js_append_child(i32, i32)")
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self.lines.append("declare void @js_set_attribute(i32, i8*, i8*)")
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self.lines.append("declare void @js_set_root(i32)")
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self.lines.append(
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"declare void @js_bind_event(i32, i8*, i8*)"
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) # elem, event_name, handler_name
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self.lines.append("declare void @js_update_text_content(i32, i8*)") # Update DOM node text
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self.lines.append("")
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def _emit_helper_functions(self) -> None:
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"""Emit helper functions for signal operations."""
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if not self.signals:
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return
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self.lines.append("; Signal helper functions")
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# Emit getter for each signal (exported for JS to call)
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for signal_name in self.signals:
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self.lines.append(f"define i32 @get_{signal_name}() {{")
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self.lines.append("entry:")
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self.lines.append(f" %val = load i32, i32* @signal_{signal_name}")
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self.lines.append(" ret i32 %val")
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self.lines.append("}")
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self.lines.append("")
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# Emit setter for each signal (exported for JS to call)
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for signal_name in self.signals:
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self.lines.append(f"define void @set_{signal_name}(i32 %newval) {{")
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self.lines.append("entry:")
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self.lines.append(f" store i32 %newval, i32* @signal_{signal_name}")
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self.lines.append(" ; TODO: Trigger DOM update callback")
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self.lines.append(" ret void")
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self.lines.append("}")
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self.lines.append("")
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def _emit_event_handlers(self) -> None:
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"""Emit event handler functions (exported for JS to call)."""
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for handler in self.event_handlers:
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func_name = handler["name"]
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self.lines.append(f"; Event handler: {func_name}")
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self.lines.append(f"define void @{func_name}() {{")
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self.lines.append("entry:")
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# Emit handler body
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for stmt in handler["body"]:
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self._emit_handler_statement(stmt)
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self.lines.append(" ret void")
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self.lines.append("}")
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self.lines.append("")
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def _emit_handler_statement(self, stmt: dict[str, Any]) -> None:
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"""Emit a statement inside an event handler."""
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if stmt["type"] == "augassign":
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# Handle signal updates (count += 1)
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signal_name = stmt["target"]
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if signal_name in self.signals:
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# Load current value
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load_var = self._new_var()
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self.lines.append(f" %{load_var} = load i32, i32* @signal_{signal_name}")
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# Perform operation
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result_var = self._new_var()
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if stmt["op"] == "Add":
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value = stmt["value"]["value"]
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self.lines.append(f" %{result_var} = add i32 %{load_var}, {value}")
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# Store back
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self.lines.append(f" store i32 %{result_var}, i32* @signal_{signal_name}")
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# TODO: Trigger DOM updates for this signal
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self.lines.append(f" ; TODO: Update DOM nodes bound to {signal_name}")
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def _emit_component(self, ir: dict[str, Any]) -> None:
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"""Emit component render function."""
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component_name = ir["name"]
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self.lines.append("; Component render function")
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self.lines.append(f"define void @render_{component_name}() {{")
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self.lines.append("entry:")
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# Process component body (skip signals and functions, already handled)
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root_var = None
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for stmt in ir["body"]:
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if stmt["type"] in ["signal", "function"]:
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continue # Already processed
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var = self._emit_statement(stmt)
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if root_var is None and var:
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root_var = var
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# Set root element
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if root_var:
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self.lines.append(f" call void @js_set_root(i32 %{root_var})")
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self.lines.append(" ret void")
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self.lines.append("}")
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self.lines.append("")
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def _emit_statement(self, stmt: dict[str, Any]) -> str | None:
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"""Emit a statement, return variable name if it creates an element."""
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if stmt["type"] == "with":
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return self._emit_with(stmt)
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elif stmt["type"] == "yield":
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return self._emit_yield(stmt)
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return None
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def _emit_with(self, stmt: dict[str, Any]) -> str:
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"""Emit a 'with Element()' block."""
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element_info = stmt["element"]
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tag = element_info["tag"].lower()
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props = element_info["props"]
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# Create element
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elem_var = self._new_var()
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tag_str = self._get_or_create_string(tag)
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self.lines.append(
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f" %{elem_var} = call i32 @js_create_element(i8* getelementptr inbounds ({self._string_type(tag)}, {self._string_type(tag)}* {tag_str}, i32 0, i32 0))"
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)
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# Handle onclick prop specially
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onclick_handler = None
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for prop_name, prop_value in props.items():
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if prop_name == "onclick":
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# Bind event handler
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if prop_value["type"] == "name":
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onclick_handler = prop_value["id"]
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else:
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# Regular attribute
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attr_name = prop_name.rstrip("_")
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if prop_value["type"] == "constant":
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value = str(prop_value["value"])
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name_str = self._get_or_create_string(attr_name)
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value_str = self._get_or_create_string(value)
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self.lines.append(
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f" call void @js_set_attribute(i32 %{elem_var}, "
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f"i8* getelementptr inbounds ({self._string_type(attr_name)}, {self._string_type(attr_name)}* {name_str}, i32 0, i32 0), "
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f"i8* getelementptr inbounds ({self._string_type(value)}, {self._string_type(value)}* {value_str}, i32 0, i32 0))"
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)
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# Bind onclick if present
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if onclick_handler:
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event_str = self._get_or_create_string("click")
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handler_str = self._get_or_create_string(onclick_handler)
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self.lines.append(
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f" call void @js_bind_event(i32 %{elem_var}, "
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f"i8* getelementptr inbounds ({self._string_type('click')}, {self._string_type('click')}* {event_str}, i32 0, i32 0), "
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f"i8* getelementptr inbounds ({self._string_type(onclick_handler)}, {self._string_type(onclick_handler)}* {handler_str}, i32 0, i32 0))"
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)
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# Process children
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for child_stmt in stmt["body"]:
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child_var = self._emit_statement(child_stmt)
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if child_var:
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self.lines.append(
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f" call void @js_append_child(i32 %{elem_var}, i32 %{child_var})"
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)
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return elem_var
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def _emit_yield(self, stmt: dict[str, Any]) -> str | None:
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"""Emit a yield statement."""
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value = stmt.get("value")
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if not value:
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return None
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if value["type"] == "constant":
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# Simple text node
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text = str(value["value"])
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text_str = self._get_or_create_string(text)
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text_var = self._new_var()
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self.lines.append(
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f" %{text_var} = call i32 @js_create_text(i8* getelementptr inbounds ({self._string_type(text)}, {self._string_type(text)}* {text_str}, i32 0, i32 0))"
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)
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return text_var
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elif value["type"] == "fstring":
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# Handle f-strings with signal references
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# For now, create text with signal value
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# TODO: Implement proper string concatenation
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parts = value["parts"]
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# Find signal references
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for part in parts:
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if part["type"] == "formatted_value":
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if part["value"]["type"] == "name":
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signal_name = part["value"]["id"]
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if signal_name in self.signals:
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# Load signal value and create text node
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# This is simplified - real impl would concat strings
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text_var = self._new_var()
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self.lines.append(
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f" ; TODO: Format f-string with signal {signal_name}"
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)
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# For now, just create placeholder text
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placeholder = self._get_or_create_string("0")
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self.lines.append(
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f" %{text_var} = call i32 @js_create_text(i8* getelementptr inbounds ([2 x i8], [2 x i8]* {placeholder}, i32 0, i32 0))"
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)
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return text_var
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# Fallback: create empty text
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empty_str = self._get_or_create_string("")
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text_var = self._new_var()
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self.lines.append(
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f" %{text_var} = call i32 @js_create_text(i8* getelementptr inbounds ({self._string_type('')}, {self._string_type('')}* {empty_str}, i32 0, i32 0))"
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)
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return text_var
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return None
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def _get_or_create_string(self, value: str) -> str:
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"""Get or create a string constant."""
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if value in self.strings:
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return self.strings[value]
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global_name = f"@.str.{self.next_string_id}"
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self.next_string_id += 1
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self.strings[value] = global_name
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return global_name
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def _string_type(self, value: str) -> str:
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"""Get LLVM type for a string (account for UTF-8 byte length)."""
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# Get actual byte length of UTF-8 encoded string
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byte_length = len(value.encode("utf-8")) + 1 # +1 for null terminator
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return f"[{byte_length} x i8]"
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def _new_var(self) -> str:
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"""Generate a new SSA variable name."""
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var_name = f"var{self.next_var_id}"
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self.next_var_id += 1
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return var_name
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def _finalize_with_strings(self) -> str:
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"""Prepend string constants and return final IR."""
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string_lines = ["; String constants"]
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for value, global_name in self.strings.items():
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escaped = value.replace("\\", "\\\\").replace('"', '\\"')
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str_type = self._string_type(value)
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string_lines.append(
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f'{global_name} = private unnamed_addr constant {str_type} c"{escaped}\\00"'
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)
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string_lines.append("")
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# Find insertion point (after header, before declarations)
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result_lines = []
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header_end = 0
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for i, line in enumerate(self.lines):
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if "JavaScript bridge" in line or "Signal storage" in line:
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header_end = i
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break
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result_lines.extend(self.lines[:header_end])
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result_lines.extend(string_lines)
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result_lines.extend(self.lines[header_end:])
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return "\n".join(result_lines)
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