giles
a9526c4fa1
- eval.sx: Add defstyle, defkeyframes, defhandler special forms; add ho-for-each
- parser.sx: Add dict {...} literal parsing and quasiquote/unquote sugar
- primitives.sx: Add parse-datetime, split-ids, css, merge-styles primitives
- render.sx: Add StyleValue handling, SVG filter elements, definition forms in render, fix render-to-html to handle HTML tags directly
- bootstrap_js.py: Add StyleValue type, buildKeyframes, isEvery platform helper, new primitives (format-date, parse-datetime, split-ids, css, merge-styles), dict/quasiquote parser, expose render functions as primitives
- sx-ref.js: Regenerated — 132/132 tests passing
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
1176 lines
46 KiB
Python
1176 lines
46 KiB
Python
#!/usr/bin/env python3
|
|
"""
|
|
Bootstrap compiler: reference SX evaluator → JavaScript.
|
|
|
|
Reads the .sx reference specification and emits a standalone JavaScript
|
|
evaluator (sx-ref.js) that can be compared against the hand-written sx.js.
|
|
|
|
The compiler translates the restricted SX subset used in eval.sx/render.sx
|
|
into idiomatic JavaScript. Platform interface functions are emitted as
|
|
native JS implementations.
|
|
|
|
Usage:
|
|
python bootstrap_js.py > sx-ref.js
|
|
"""
|
|
from __future__ import annotations
|
|
|
|
import os
|
|
import sys
|
|
|
|
# Add project root to path for imports
|
|
_HERE = os.path.dirname(os.path.abspath(__file__))
|
|
_PROJECT = os.path.abspath(os.path.join(_HERE, "..", "..", ".."))
|
|
sys.path.insert(0, _PROJECT)
|
|
|
|
from shared.sx.parser import parse_all
|
|
from shared.sx.types import Symbol, Keyword, NIL as SX_NIL
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# SX → JavaScript transpiler
|
|
# ---------------------------------------------------------------------------
|
|
|
|
class JSEmitter:
|
|
"""Transpile an SX AST node to JavaScript source code."""
|
|
|
|
def __init__(self):
|
|
self.indent = 0
|
|
|
|
def emit(self, expr) -> str:
|
|
"""Emit a JS expression from an SX AST node."""
|
|
# Bool MUST be checked before int (bool is subclass of int in Python)
|
|
if isinstance(expr, bool):
|
|
return "true" if expr else "false"
|
|
if isinstance(expr, (int, float)):
|
|
return str(expr)
|
|
if isinstance(expr, str):
|
|
return self._js_string(expr)
|
|
if expr is None or expr is SX_NIL:
|
|
return "NIL"
|
|
if isinstance(expr, Symbol):
|
|
return self._emit_symbol(expr.name)
|
|
if isinstance(expr, Keyword):
|
|
return self._js_string(expr.name)
|
|
if isinstance(expr, list):
|
|
return self._emit_list(expr)
|
|
return str(expr)
|
|
|
|
def emit_statement(self, expr) -> str:
|
|
"""Emit a JS statement (with semicolon) from an SX AST node."""
|
|
if isinstance(expr, list) and expr:
|
|
head = expr[0]
|
|
if isinstance(head, Symbol):
|
|
name = head.name
|
|
if name == "define":
|
|
return self._emit_define(expr)
|
|
if name == "set!":
|
|
return f"{self._mangle(expr[1].name)} = {self.emit(expr[2])};"
|
|
if name == "when":
|
|
return self._emit_when_stmt(expr)
|
|
if name == "do" or name == "begin":
|
|
return "\n".join(self.emit_statement(e) for e in expr[1:])
|
|
if name == "for-each":
|
|
return self._emit_for_each_stmt(expr)
|
|
if name == "dict-set!":
|
|
return f"{self.emit(expr[1])}[{self.emit(expr[2])}] = {self.emit(expr[3])};"
|
|
if name == "append!":
|
|
return f"{self.emit(expr[1])}.push({self.emit(expr[2])});"
|
|
if name == "env-set!":
|
|
return f"{self.emit(expr[1])}[{self.emit(expr[2])}] = {self.emit(expr[3])};"
|
|
if name == "set-lambda-name!":
|
|
return f"{self.emit(expr[1])}.name = {self.emit(expr[2])};"
|
|
return f"{self.emit(expr)};"
|
|
|
|
# --- Symbol emission ---
|
|
|
|
def _emit_symbol(self, name: str) -> str:
|
|
# Map SX names to JS names
|
|
return self._mangle(name)
|
|
|
|
def _mangle(self, name: str) -> str:
|
|
"""Convert SX identifier to valid JS identifier."""
|
|
RENAMES = {
|
|
"nil": "NIL",
|
|
"true": "true",
|
|
"false": "false",
|
|
"nil?": "isNil",
|
|
"type-of": "typeOf",
|
|
"symbol-name": "symbolName",
|
|
"keyword-name": "keywordName",
|
|
"make-lambda": "makeLambda",
|
|
"make-component": "makeComponent",
|
|
"make-macro": "makeMacro",
|
|
"make-thunk": "makeThunk",
|
|
"make-symbol": "makeSymbol",
|
|
"make-keyword": "makeKeyword",
|
|
"lambda-params": "lambdaParams",
|
|
"lambda-body": "lambdaBody",
|
|
"lambda-closure": "lambdaClosure",
|
|
"lambda-name": "lambdaName",
|
|
"set-lambda-name!": "setLambdaName",
|
|
"component-params": "componentParams",
|
|
"component-body": "componentBody",
|
|
"component-closure": "componentClosure",
|
|
"component-has-children?": "componentHasChildren",
|
|
"component-name": "componentName",
|
|
"macro-params": "macroParams",
|
|
"macro-rest-param": "macroRestParam",
|
|
"macro-body": "macroBody",
|
|
"macro-closure": "macroClosure",
|
|
"thunk?": "isThunk",
|
|
"thunk-expr": "thunkExpr",
|
|
"thunk-env": "thunkEnv",
|
|
"callable?": "isCallable",
|
|
"lambda?": "isLambda",
|
|
"component?": "isComponent",
|
|
"macro?": "isMacro",
|
|
"primitive?": "isPrimitive",
|
|
"get-primitive": "getPrimitive",
|
|
"env-has?": "envHas",
|
|
"env-get": "envGet",
|
|
"env-set!": "envSet",
|
|
"env-extend": "envExtend",
|
|
"env-merge": "envMerge",
|
|
"dict-set!": "dictSet",
|
|
"dict-get": "dictGet",
|
|
"eval-expr": "evalExpr",
|
|
"eval-list": "evalList",
|
|
"eval-call": "evalCall",
|
|
"call-lambda": "callLambda",
|
|
"call-component": "callComponent",
|
|
"parse-keyword-args": "parseKeywordArgs",
|
|
"parse-comp-params": "parseCompParams",
|
|
"parse-macro-params": "parseMacroParams",
|
|
"expand-macro": "expandMacro",
|
|
"render-to-html": "renderToHtml",
|
|
"render-to-sx": "renderToSx",
|
|
"render-value-to-html": "renderValueToHtml",
|
|
"render-list-to-html": "renderListToHtml",
|
|
"render-html-element": "renderHtmlElement",
|
|
"parse-element-args": "parseElementArgs",
|
|
"render-attrs": "renderAttrs",
|
|
"aser-list": "aserList",
|
|
"aser-fragment": "aserFragment",
|
|
"aser-call": "aserCall",
|
|
"aser-special": "aserSpecial",
|
|
"sf-if": "sfIf",
|
|
"sf-when": "sfWhen",
|
|
"sf-cond": "sfCond",
|
|
"sf-cond-scheme": "sfCondScheme",
|
|
"sf-cond-clojure": "sfCondClojure",
|
|
"sf-case": "sfCase",
|
|
"sf-case-loop": "sfCaseLoop",
|
|
"sf-and": "sfAnd",
|
|
"sf-or": "sfOr",
|
|
"sf-let": "sfLet",
|
|
"sf-lambda": "sfLambda",
|
|
"sf-define": "sfDefine",
|
|
"sf-defcomp": "sfDefcomp",
|
|
"sf-defmacro": "sfDefmacro",
|
|
"sf-begin": "sfBegin",
|
|
"sf-quote": "sfQuote",
|
|
"sf-quasiquote": "sfQuasiquote",
|
|
"sf-thread-first": "sfThreadFirst",
|
|
"sf-set!": "sfSetBang",
|
|
"qq-expand": "qqExpand",
|
|
"ho-map": "hoMap",
|
|
"ho-map-indexed": "hoMapIndexed",
|
|
"ho-filter": "hoFilter",
|
|
"ho-reduce": "hoReduce",
|
|
"ho-some": "hoSome",
|
|
"ho-every": "hoEvery",
|
|
"ho-for-each": "hoForEach",
|
|
"sf-defstyle": "sfDefstyle",
|
|
"sf-defkeyframes": "sfDefkeyframes",
|
|
"build-keyframes": "buildKeyframes",
|
|
"style-value?": "isStyleValue",
|
|
"style-value-class": "styleValueClass",
|
|
"kf-name": "kfName",
|
|
"special-form?": "isSpecialForm",
|
|
"ho-form?": "isHoForm",
|
|
"strip-prefix": "stripPrefix",
|
|
"escape-html": "escapeHtml",
|
|
"escape-attr": "escapeAttr",
|
|
"escape-string": "escapeString",
|
|
"raw-html-content": "rawHtmlContent",
|
|
"HTML_TAGS": "HTML_TAGS",
|
|
"VOID_ELEMENTS": "VOID_ELEMENTS",
|
|
"BOOLEAN_ATTRS": "BOOLEAN_ATTRS",
|
|
"whitespace?": "isWhitespace",
|
|
"digit?": "isDigit",
|
|
"ident-start?": "isIdentStart",
|
|
"ident-char?": "isIdentChar",
|
|
"parse-number": "parseNumber",
|
|
"sx-expr-source": "sxExprSource",
|
|
"starts-with?": "startsWith",
|
|
"ends-with?": "endsWith",
|
|
"contains?": "contains",
|
|
"empty?": "isEmpty",
|
|
"odd?": "isOdd",
|
|
"even?": "isEven",
|
|
"zero?": "isZero",
|
|
"number?": "isNumber",
|
|
"string?": "isString",
|
|
"list?": "isList",
|
|
"dict?": "isDict",
|
|
"every?": "isEvery",
|
|
"map-indexed": "mapIndexed",
|
|
"for-each": "forEach",
|
|
"map-dict": "mapDict",
|
|
"chunk-every": "chunkEvery",
|
|
"zip-pairs": "zipPairs",
|
|
"strip-tags": "stripTags",
|
|
"format-date": "formatDate",
|
|
"format-decimal": "formatDecimal",
|
|
"parse-int": "parseInt_",
|
|
}
|
|
if name in RENAMES:
|
|
return RENAMES[name]
|
|
# General mangling: replace - with camelCase, ? with _p, ! with _b
|
|
result = name
|
|
if result.endswith("?"):
|
|
result = result[:-1] + "_p"
|
|
if result.endswith("!"):
|
|
result = result[:-1] + "_b"
|
|
# Kebab to camel
|
|
parts = result.split("-")
|
|
if len(parts) > 1:
|
|
result = parts[0] + "".join(p.capitalize() for p in parts[1:])
|
|
return result
|
|
|
|
# --- List emission ---
|
|
|
|
def _emit_list(self, expr: list) -> str:
|
|
if not expr:
|
|
return "[]"
|
|
head = expr[0]
|
|
if not isinstance(head, Symbol):
|
|
# Data list
|
|
return "[" + ", ".join(self.emit(x) for x in expr) + "]"
|
|
name = head.name
|
|
handler = getattr(self, f"_sf_{name.replace('-', '_').replace('!', '_b').replace('?', '_p')}", None)
|
|
if handler:
|
|
return handler(expr)
|
|
# Built-in forms
|
|
if name == "fn" or name == "lambda":
|
|
return self._emit_fn(expr)
|
|
if name == "let" or name == "let*":
|
|
return self._emit_let(expr)
|
|
if name == "if":
|
|
return self._emit_if(expr)
|
|
if name == "when":
|
|
return self._emit_when(expr)
|
|
if name == "cond":
|
|
return self._emit_cond(expr)
|
|
if name == "case":
|
|
return self._emit_case(expr)
|
|
if name == "and":
|
|
return self._emit_and(expr)
|
|
if name == "or":
|
|
return self._emit_or(expr)
|
|
if name == "not":
|
|
return f"!{self.emit(expr[1])}"
|
|
if name == "do" or name == "begin":
|
|
return self._emit_do(expr)
|
|
if name == "list":
|
|
return "[" + ", ".join(self.emit(x) for x in expr[1:]) + "]"
|
|
if name == "dict":
|
|
return self._emit_dict_literal(expr)
|
|
if name == "quote":
|
|
return self._emit_quote(expr[1])
|
|
if name == "set!":
|
|
return f"({self._mangle(expr[1].name)} = {self.emit(expr[2])})"
|
|
if name == "str":
|
|
parts = [self.emit(x) for x in expr[1:]]
|
|
return "(" + " + ".join(f'String({p})' for p in parts) + ")"
|
|
# Infix operators
|
|
if name in ("+", "-", "*", "/", "=", "!=", "<", ">", "<=", ">=", "mod"):
|
|
return self._emit_infix(name, expr[1:])
|
|
if name == "inc":
|
|
return f"({self.emit(expr[1])} + 1)"
|
|
if name == "dec":
|
|
return f"({self.emit(expr[1])} - 1)"
|
|
|
|
# Regular function call
|
|
fn_name = self._mangle(name)
|
|
args = ", ".join(self.emit(x) for x in expr[1:])
|
|
return f"{fn_name}({args})"
|
|
|
|
# --- Special form emitters ---
|
|
|
|
def _emit_fn(self, expr) -> str:
|
|
params = expr[1]
|
|
body = expr[2]
|
|
param_names = []
|
|
for p in params:
|
|
if isinstance(p, Symbol):
|
|
param_names.append(self._mangle(p.name))
|
|
else:
|
|
param_names.append(str(p))
|
|
params_str = ", ".join(param_names)
|
|
body_js = self.emit(body)
|
|
return f"function({params_str}) {{ return {body_js}; }}"
|
|
|
|
def _emit_let(self, expr) -> str:
|
|
bindings = expr[1]
|
|
body = expr[2:]
|
|
parts = ["(function() {"]
|
|
if isinstance(bindings, list):
|
|
if bindings and isinstance(bindings[0], list):
|
|
# Scheme-style: ((name val) ...)
|
|
for b in bindings:
|
|
vname = b[0].name if isinstance(b[0], Symbol) else str(b[0])
|
|
parts.append(f" var {self._mangle(vname)} = {self.emit(b[1])};")
|
|
else:
|
|
# Clojure-style: (name val name val ...)
|
|
for i in range(0, len(bindings), 2):
|
|
vname = bindings[i].name if isinstance(bindings[i], Symbol) else str(bindings[i])
|
|
parts.append(f" var {self._mangle(vname)} = {self.emit(bindings[i + 1])};")
|
|
for b_expr in body[:-1]:
|
|
parts.append(f" {self.emit_statement(b_expr)}")
|
|
parts.append(f" return {self.emit(body[-1])};")
|
|
parts.append("})()")
|
|
return "\n".join(parts)
|
|
|
|
def _emit_if(self, expr) -> str:
|
|
cond = self.emit(expr[1])
|
|
then = self.emit(expr[2])
|
|
els = self.emit(expr[3]) if len(expr) > 3 else "NIL"
|
|
return f"(isSxTruthy({cond}) ? {then} : {els})"
|
|
|
|
def _emit_when(self, expr) -> str:
|
|
cond = self.emit(expr[1])
|
|
body_parts = expr[2:]
|
|
if len(body_parts) == 1:
|
|
return f"(isSxTruthy({cond}) ? {self.emit(body_parts[0])} : NIL)"
|
|
body = self._emit_do_inner(body_parts)
|
|
return f"(isSxTruthy({cond}) ? {body} : NIL)"
|
|
|
|
def _emit_when_stmt(self, expr) -> str:
|
|
cond = self.emit(expr[1])
|
|
body_parts = expr[2:]
|
|
stmts = "\n".join(f" {self.emit_statement(e)}" for e in body_parts)
|
|
return f"if (isSxTruthy({cond})) {{\n{stmts}\n}}"
|
|
|
|
def _emit_cond(self, expr) -> str:
|
|
clauses = expr[1:]
|
|
if not clauses:
|
|
return "NIL"
|
|
# Determine style ONCE: Scheme-style if every element is a 2-element
|
|
# list AND no bare keywords appear (bare :else = Clojure).
|
|
is_scheme = (
|
|
all(isinstance(c, list) and len(c) == 2 for c in clauses)
|
|
and not any(isinstance(c, Keyword) for c in clauses)
|
|
)
|
|
if is_scheme:
|
|
return self._cond_scheme(clauses)
|
|
return self._cond_clojure(clauses)
|
|
|
|
def _cond_scheme(self, clauses) -> str:
|
|
if not clauses:
|
|
return "NIL"
|
|
clause = clauses[0]
|
|
test = clause[0]
|
|
body = clause[1]
|
|
if isinstance(test, Symbol) and test.name in ("else", ":else"):
|
|
return self.emit(body)
|
|
if isinstance(test, Keyword) and test.name == "else":
|
|
return self.emit(body)
|
|
return f"(isSxTruthy({self.emit(test)}) ? {self.emit(body)} : {self._cond_scheme(clauses[1:])})"
|
|
|
|
def _cond_clojure(self, clauses) -> str:
|
|
if len(clauses) < 2:
|
|
return "NIL"
|
|
test = clauses[0]
|
|
body = clauses[1]
|
|
if isinstance(test, Keyword) and test.name == "else":
|
|
return self.emit(body)
|
|
if isinstance(test, Symbol) and test.name in ("else", ":else"):
|
|
return self.emit(body)
|
|
return f"(isSxTruthy({self.emit(test)}) ? {self.emit(body)} : {self._cond_clojure(clauses[2:])})"
|
|
|
|
def _emit_case(self, expr) -> str:
|
|
match_expr = self.emit(expr[1])
|
|
clauses = expr[2:]
|
|
return f"(function() {{ var _m = {match_expr}; {self._case_chain(clauses)} }})()"
|
|
|
|
def _case_chain(self, clauses) -> str:
|
|
if len(clauses) < 2:
|
|
return "return NIL;"
|
|
test = clauses[0]
|
|
body = clauses[1]
|
|
if isinstance(test, Keyword) and test.name == "else":
|
|
return f"return {self.emit(body)};"
|
|
if isinstance(test, Symbol) and test.name in ("else", ":else"):
|
|
return f"return {self.emit(body)};"
|
|
return f"if (_m == {self.emit(test)}) return {self.emit(body)}; {self._case_chain(clauses[2:])}"
|
|
|
|
def _emit_and(self, expr) -> str:
|
|
parts = [self.emit(x) for x in expr[1:]]
|
|
return "(" + " && ".join(f"isSxTruthy({p})" for p in parts[:-1]) + (" && " if len(parts) > 1 else "") + parts[-1] + ")"
|
|
|
|
def _emit_or(self, expr) -> str:
|
|
if len(expr) == 2:
|
|
return self.emit(expr[1])
|
|
parts = [self.emit(x) for x in expr[1:]]
|
|
# Use a helper that returns the first truthy value
|
|
return f"sxOr({', '.join(parts)})"
|
|
|
|
def _emit_do(self, expr) -> str:
|
|
return self._emit_do_inner(expr[1:])
|
|
|
|
def _emit_do_inner(self, exprs) -> str:
|
|
if len(exprs) == 1:
|
|
return self.emit(exprs[0])
|
|
parts = [self.emit(e) for e in exprs]
|
|
return "(" + ", ".join(parts) + ")"
|
|
|
|
def _emit_dict_literal(self, expr) -> str:
|
|
pairs = expr[1:]
|
|
parts = []
|
|
i = 0
|
|
while i < len(pairs) - 1:
|
|
key = pairs[i]
|
|
val = pairs[i + 1]
|
|
if isinstance(key, Keyword):
|
|
parts.append(f"{self._js_string(key.name)}: {self.emit(val)}")
|
|
else:
|
|
parts.append(f"[{self.emit(key)}]: {self.emit(val)}")
|
|
i += 2
|
|
return "{" + ", ".join(parts) + "}"
|
|
|
|
def _emit_infix(self, op: str, args: list) -> str:
|
|
JS_OPS = {"=": "==", "!=": "!=", "mod": "%"}
|
|
js_op = JS_OPS.get(op, op)
|
|
if len(args) == 1 and op == "-":
|
|
return f"(-{self.emit(args[0])})"
|
|
return f"({self.emit(args[0])} {js_op} {self.emit(args[1])})"
|
|
|
|
def _emit_define(self, expr) -> str:
|
|
name = expr[1].name if isinstance(expr[1], Symbol) else str(expr[1])
|
|
val = self.emit(expr[2])
|
|
return f"var {self._mangle(name)} = {val};"
|
|
|
|
def _emit_for_each_stmt(self, expr) -> str:
|
|
fn_expr = expr[1]
|
|
coll_expr = expr[2]
|
|
coll = self.emit(coll_expr)
|
|
# If fn is an inline lambda, emit a for loop
|
|
if isinstance(fn_expr, list) and fn_expr[0] == Symbol("fn"):
|
|
params = fn_expr[1]
|
|
body = fn_expr[2]
|
|
p = params[0].name if isinstance(params[0], Symbol) else str(params[0])
|
|
p_js = self._mangle(p)
|
|
body_js = self.emit_statement(body)
|
|
return f"{{ var _c = {coll}; for (var _i = 0; _i < _c.length; _i++) {{ var {p_js} = _c[_i]; {body_js} }} }}"
|
|
fn = self.emit(fn_expr)
|
|
return f"{{ var _c = {coll}; for (var _i = 0; _i < _c.length; _i++) {{ {fn}(_c[_i]); }} }}"
|
|
|
|
def _emit_quote(self, expr) -> str:
|
|
"""Emit a quoted expression as a JS literal AST."""
|
|
if isinstance(expr, bool):
|
|
return "true" if expr else "false"
|
|
if isinstance(expr, (int, float)):
|
|
return str(expr)
|
|
if isinstance(expr, str):
|
|
return self._js_string(expr)
|
|
if expr is None or expr is SX_NIL:
|
|
return "NIL"
|
|
if isinstance(expr, Symbol):
|
|
return f'new Symbol({self._js_string(expr.name)})'
|
|
if isinstance(expr, Keyword):
|
|
return f'new Keyword({self._js_string(expr.name)})'
|
|
if isinstance(expr, list):
|
|
return "[" + ", ".join(self._emit_quote(x) for x in expr) + "]"
|
|
return str(expr)
|
|
|
|
def _js_string(self, s: str) -> str:
|
|
return '"' + s.replace("\\", "\\\\").replace('"', '\\"').replace("\n", "\\n").replace("\r", "\\r").replace("\t", "\\t") + '"'
|
|
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Bootstrap compiler
|
|
# ---------------------------------------------------------------------------
|
|
|
|
def extract_defines(source: str) -> list[tuple[str, list]]:
|
|
"""Parse .sx source, return list of (name, define-expr) for top-level defines."""
|
|
exprs = parse_all(source)
|
|
defines = []
|
|
for expr in exprs:
|
|
if isinstance(expr, list) and expr and isinstance(expr[0], Symbol):
|
|
if expr[0].name == "define":
|
|
name = expr[1].name if isinstance(expr[1], Symbol) else str(expr[1])
|
|
defines.append((name, expr))
|
|
return defines
|
|
|
|
|
|
def compile_ref_to_js() -> str:
|
|
"""Read reference .sx files and emit JavaScript."""
|
|
ref_dir = os.path.dirname(os.path.abspath(__file__))
|
|
emitter = JSEmitter()
|
|
|
|
# Read reference files
|
|
with open(os.path.join(ref_dir, "eval.sx")) as f:
|
|
eval_src = f.read()
|
|
with open(os.path.join(ref_dir, "render.sx")) as f:
|
|
render_src = f.read()
|
|
|
|
eval_defines = extract_defines(eval_src)
|
|
render_defines = extract_defines(render_src)
|
|
|
|
# Build output
|
|
parts = []
|
|
parts.append(PREAMBLE)
|
|
parts.append(PLATFORM_JS)
|
|
parts.append("\n // === Transpiled from eval.sx ===\n")
|
|
for name, expr in eval_defines:
|
|
parts.append(f" // {name}")
|
|
parts.append(f" {emitter.emit_statement(expr)}")
|
|
parts.append("")
|
|
parts.append("\n // === Transpiled from render.sx ===\n")
|
|
for name, expr in render_defines:
|
|
parts.append(f" // {name}")
|
|
parts.append(f" {emitter.emit_statement(expr)}")
|
|
parts.append("")
|
|
parts.append(FIXUPS)
|
|
parts.append(PUBLIC_API)
|
|
parts.append(EPILOGUE)
|
|
return "\n".join(parts)
|
|
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Static JS sections
|
|
# ---------------------------------------------------------------------------
|
|
|
|
PREAMBLE = '''\
|
|
/**
|
|
* sx-ref.js — Generated from reference SX evaluator specification.
|
|
*
|
|
* Bootstrap-compiled from shared/sx/ref/{eval,render,primitives}.sx
|
|
* Compare against hand-written sx.js for correctness verification.
|
|
*
|
|
* DO NOT EDIT — regenerate with: python bootstrap_js.py
|
|
*/
|
|
;(function(global) {
|
|
"use strict";
|
|
|
|
// =========================================================================
|
|
// Types
|
|
// =========================================================================
|
|
|
|
var NIL = Object.freeze({ _nil: true, toString: function() { return "nil"; } });
|
|
|
|
function isNil(x) { return x === NIL || x === null || x === undefined; }
|
|
function isSxTruthy(x) { return x !== false && !isNil(x); }
|
|
|
|
function Symbol(name) { this.name = name; }
|
|
Symbol.prototype.toString = function() { return this.name; };
|
|
Symbol.prototype._sym = true;
|
|
|
|
function Keyword(name) { this.name = name; }
|
|
Keyword.prototype.toString = function() { return ":" + this.name; };
|
|
Keyword.prototype._kw = true;
|
|
|
|
function Lambda(params, body, closure, name) {
|
|
this.params = params;
|
|
this.body = body;
|
|
this.closure = closure || {};
|
|
this.name = name || null;
|
|
}
|
|
Lambda.prototype._lambda = true;
|
|
|
|
function Component(name, params, hasChildren, body, closure) {
|
|
this.name = name;
|
|
this.params = params;
|
|
this.hasChildren = hasChildren;
|
|
this.body = body;
|
|
this.closure = closure || {};
|
|
}
|
|
Component.prototype._component = true;
|
|
|
|
function Macro(params, restParam, body, closure, name) {
|
|
this.params = params;
|
|
this.restParam = restParam;
|
|
this.body = body;
|
|
this.closure = closure || {};
|
|
this.name = name || null;
|
|
}
|
|
Macro.prototype._macro = true;
|
|
|
|
function Thunk(expr, env) { this.expr = expr; this.env = env; }
|
|
Thunk.prototype._thunk = true;
|
|
|
|
function RawHTML(html) { this.html = html; }
|
|
RawHTML.prototype._raw = true;
|
|
|
|
function StyleValue(className, declarations, mediaRules, pseudoRules, keyframes) {
|
|
this.className = className;
|
|
this.declarations = declarations || "";
|
|
this.mediaRules = mediaRules || [];
|
|
this.pseudoRules = pseudoRules || [];
|
|
this.keyframes = keyframes || [];
|
|
}
|
|
StyleValue.prototype._styleValue = true;
|
|
|
|
function isSym(x) { return x != null && x._sym === true; }
|
|
function isKw(x) { return x != null && x._kw === true; }
|
|
|
|
function merge() {
|
|
var out = {};
|
|
for (var i = 0; i < arguments.length; i++) {
|
|
var d = arguments[i];
|
|
if (d) for (var k in d) out[k] = d[k];
|
|
}
|
|
return out;
|
|
}
|
|
|
|
function sxOr() {
|
|
for (var i = 0; i < arguments.length; i++) {
|
|
if (isSxTruthy(arguments[i])) return arguments[i];
|
|
}
|
|
return arguments.length ? arguments[arguments.length - 1] : false;
|
|
}'''
|
|
|
|
PLATFORM_JS = '''
|
|
// =========================================================================
|
|
// Platform interface — JS implementation
|
|
// =========================================================================
|
|
|
|
function typeOf(x) {
|
|
if (isNil(x)) return "nil";
|
|
if (typeof x === "number") return "number";
|
|
if (typeof x === "string") return "string";
|
|
if (typeof x === "boolean") return "boolean";
|
|
if (x._sym) return "symbol";
|
|
if (x._kw) return "keyword";
|
|
if (x._thunk) return "thunk";
|
|
if (x._lambda) return "lambda";
|
|
if (x._component) return "component";
|
|
if (x._macro) return "macro";
|
|
if (x._raw) return "raw-html";
|
|
if (x._styleValue) return "style-value";
|
|
if (Array.isArray(x)) return "list";
|
|
if (typeof x === "object") return "dict";
|
|
return "unknown";
|
|
}
|
|
|
|
function symbolName(s) { return s.name; }
|
|
function keywordName(k) { return k.name; }
|
|
function makeSymbol(n) { return new Symbol(n); }
|
|
function makeKeyword(n) { return new Keyword(n); }
|
|
|
|
function makeLambda(params, body, env) { return new Lambda(params, body, merge(env)); }
|
|
function makeComponent(name, params, hasChildren, body, env) {
|
|
return new Component(name, params, hasChildren, body, merge(env));
|
|
}
|
|
function makeMacro(params, restParam, body, env, name) {
|
|
return new Macro(params, restParam, body, merge(env), name);
|
|
}
|
|
function makeThunk(expr, env) { return new Thunk(expr, env); }
|
|
|
|
function lambdaParams(f) { return f.params; }
|
|
function lambdaBody(f) { return f.body; }
|
|
function lambdaClosure(f) { return f.closure; }
|
|
function lambdaName(f) { return f.name; }
|
|
function setLambdaName(f, n) { f.name = n; }
|
|
|
|
function componentParams(c) { return c.params; }
|
|
function componentBody(c) { return c.body; }
|
|
function componentClosure(c) { return c.closure; }
|
|
function componentHasChildren(c) { return c.hasChildren; }
|
|
function componentName(c) { return c.name; }
|
|
|
|
function macroParams(m) { return m.params; }
|
|
function macroRestParam(m) { return m.restParam; }
|
|
function macroBody(m) { return m.body; }
|
|
function macroClosure(m) { return m.closure; }
|
|
|
|
function isThunk(x) { return x != null && x._thunk === true; }
|
|
function thunkExpr(t) { return t.expr; }
|
|
function thunkEnv(t) { return t.env; }
|
|
|
|
function isCallable(x) { return typeof x === "function" || (x != null && x._lambda === true); }
|
|
function isLambda(x) { return x != null && x._lambda === true; }
|
|
function isComponent(x) { return x != null && x._component === true; }
|
|
function isMacro(x) { return x != null && x._macro === true; }
|
|
|
|
function isStyleValue(x) { return x != null && x._styleValue === true; }
|
|
function styleValueClass(x) { return x.className; }
|
|
function styleValue_p(x) { return x != null && x._styleValue === true; }
|
|
|
|
function buildKeyframes(kfName, steps, env) {
|
|
// Platform implementation of defkeyframes
|
|
var parts = [];
|
|
for (var i = 0; i < steps.length; i++) {
|
|
var step = steps[i];
|
|
var selector = isSym(step[0]) ? step[0].name : String(step[0]);
|
|
var body = trampoline(evalExpr(step[1], env));
|
|
var decls = isStyleValue(body) ? body.declarations : String(body);
|
|
parts.push(selector + "{" + decls + "}");
|
|
}
|
|
var kfRule = "@keyframes " + kfName + "{" + parts.join("") + "}";
|
|
var cn = "sx-ref-kf-" + kfName;
|
|
var sv = new StyleValue(cn, "animation-name:" + kfName, [], [], [[kfName, kfRule]]);
|
|
env[kfName] = sv;
|
|
return sv;
|
|
}
|
|
|
|
function envHas(env, name) { return name in env; }
|
|
function envGet(env, name) { return env[name]; }
|
|
function envSet(env, name, val) { env[name] = val; }
|
|
function envExtend(env) { return merge(env); }
|
|
function envMerge(base, overlay) { return merge(base, overlay); }
|
|
|
|
function dictSet(d, k, v) { d[k] = v; }
|
|
function dictGet(d, k) { var v = d[k]; return v !== undefined ? v : NIL; }
|
|
|
|
function stripPrefix(s, prefix) {
|
|
return s.indexOf(prefix) === 0 ? s.slice(prefix.length) : s;
|
|
}
|
|
|
|
function error(msg) { throw new Error(msg); }
|
|
function inspect(x) { return JSON.stringify(x); }
|
|
|
|
// =========================================================================
|
|
// Primitives
|
|
// =========================================================================
|
|
|
|
var PRIMITIVES = {};
|
|
|
|
// Arithmetic
|
|
PRIMITIVES["+"] = function() { var s = 0; for (var i = 0; i < arguments.length; i++) s += arguments[i]; return s; };
|
|
PRIMITIVES["-"] = function(a, b) { return arguments.length === 1 ? -a : a - b; };
|
|
PRIMITIVES["*"] = function() { var s = 1; for (var i = 0; i < arguments.length; i++) s *= arguments[i]; return s; };
|
|
PRIMITIVES["/"] = function(a, b) { return a / b; };
|
|
PRIMITIVES["mod"] = function(a, b) { return a % b; };
|
|
PRIMITIVES["inc"] = function(n) { return n + 1; };
|
|
PRIMITIVES["dec"] = function(n) { return n - 1; };
|
|
PRIMITIVES["abs"] = Math.abs;
|
|
PRIMITIVES["floor"] = Math.floor;
|
|
PRIMITIVES["ceil"] = Math.ceil;
|
|
PRIMITIVES["round"] = Math.round;
|
|
PRIMITIVES["min"] = Math.min;
|
|
PRIMITIVES["max"] = Math.max;
|
|
PRIMITIVES["sqrt"] = Math.sqrt;
|
|
PRIMITIVES["pow"] = Math.pow;
|
|
PRIMITIVES["clamp"] = function(x, lo, hi) { return Math.max(lo, Math.min(hi, x)); };
|
|
|
|
// Comparison
|
|
PRIMITIVES["="] = function(a, b) { return a == b; };
|
|
PRIMITIVES["!="] = function(a, b) { return a != b; };
|
|
PRIMITIVES["<"] = function(a, b) { return a < b; };
|
|
PRIMITIVES[">"] = function(a, b) { return a > b; };
|
|
PRIMITIVES["<="] = function(a, b) { return a <= b; };
|
|
PRIMITIVES[">="] = function(a, b) { return a >= b; };
|
|
|
|
// Logic
|
|
PRIMITIVES["not"] = function(x) { return !isSxTruthy(x); };
|
|
|
|
// String
|
|
PRIMITIVES["str"] = function() {
|
|
var p = [];
|
|
for (var i = 0; i < arguments.length; i++) {
|
|
var v = arguments[i]; if (isNil(v)) continue; p.push(String(v));
|
|
}
|
|
return p.join("");
|
|
};
|
|
PRIMITIVES["upper"] = function(s) { return String(s).toUpperCase(); };
|
|
PRIMITIVES["lower"] = function(s) { return String(s).toLowerCase(); };
|
|
PRIMITIVES["trim"] = function(s) { return String(s).trim(); };
|
|
PRIMITIVES["split"] = function(s, sep) { return String(s).split(sep || " "); };
|
|
PRIMITIVES["join"] = function(sep, coll) { return coll.join(sep); };
|
|
PRIMITIVES["replace"] = function(s, old, nw) { return s.split(old).join(nw); };
|
|
PRIMITIVES["starts-with?"] = function(s, p) { return String(s).indexOf(p) === 0; };
|
|
PRIMITIVES["ends-with?"] = function(s, p) { var str = String(s); return str.indexOf(p, str.length - p.length) !== -1; };
|
|
PRIMITIVES["slice"] = function(c, a, b) { return b !== undefined ? c.slice(a, b) : c.slice(a); };
|
|
PRIMITIVES["concat"] = function() {
|
|
var out = [];
|
|
for (var i = 0; i < arguments.length; i++) if (arguments[i]) out = out.concat(arguments[i]);
|
|
return out;
|
|
};
|
|
PRIMITIVES["strip-tags"] = function(s) { return String(s).replace(/<[^>]+>/g, ""); };
|
|
|
|
// Predicates
|
|
PRIMITIVES["nil?"] = isNil;
|
|
PRIMITIVES["number?"] = function(x) { return typeof x === "number"; };
|
|
PRIMITIVES["string?"] = function(x) { return typeof x === "string"; };
|
|
PRIMITIVES["list?"] = Array.isArray;
|
|
PRIMITIVES["dict?"] = function(x) { return x !== null && typeof x === "object" && !Array.isArray(x) && !x._sym && !x._kw; };
|
|
PRIMITIVES["empty?"] = function(c) { return isNil(c) || (Array.isArray(c) ? c.length === 0 : typeof c === "string" ? c.length === 0 : Object.keys(c).length === 0); };
|
|
PRIMITIVES["contains?"] = function(c, k) {
|
|
if (typeof c === "string") return c.indexOf(String(k)) !== -1;
|
|
if (Array.isArray(c)) return c.indexOf(k) !== -1;
|
|
return k in c;
|
|
};
|
|
PRIMITIVES["odd?"] = function(n) { return n % 2 !== 0; };
|
|
PRIMITIVES["even?"] = function(n) { return n % 2 === 0; };
|
|
PRIMITIVES["zero?"] = function(n) { return n === 0; };
|
|
|
|
// Collections
|
|
PRIMITIVES["list"] = function() { return Array.prototype.slice.call(arguments); };
|
|
PRIMITIVES["dict"] = function() {
|
|
var d = {};
|
|
for (var i = 0; i < arguments.length - 1; i += 2) d[arguments[i]] = arguments[i + 1];
|
|
return d;
|
|
};
|
|
PRIMITIVES["range"] = function(a, b, step) {
|
|
var r = []; step = step || 1;
|
|
for (var i = a; step > 0 ? i < b : i > b; i += step) r.push(i);
|
|
return r;
|
|
};
|
|
PRIMITIVES["get"] = function(c, k, def) { var v = (c && c[k]); return v !== undefined ? v : (def !== undefined ? def : NIL); };
|
|
PRIMITIVES["len"] = function(c) { return Array.isArray(c) ? c.length : typeof c === "string" ? c.length : Object.keys(c).length; };
|
|
PRIMITIVES["first"] = function(c) { return c && c.length > 0 ? c[0] : NIL; };
|
|
PRIMITIVES["last"] = function(c) { return c && c.length > 0 ? c[c.length - 1] : NIL; };
|
|
PRIMITIVES["rest"] = function(c) { return c ? c.slice(1) : []; };
|
|
PRIMITIVES["nth"] = function(c, n) { return c && n >= 0 && n < c.length ? c[n] : NIL; };
|
|
PRIMITIVES["cons"] = function(x, c) { return [x].concat(c || []); };
|
|
PRIMITIVES["append"] = function(c, x) { return (c || []).concat([x]); };
|
|
PRIMITIVES["keys"] = function(d) { return Object.keys(d || {}); };
|
|
PRIMITIVES["vals"] = function(d) { var r = []; for (var k in d) r.push(d[k]); return r; };
|
|
PRIMITIVES["merge"] = function() {
|
|
var out = {};
|
|
for (var i = 0; i < arguments.length; i++) { var d = arguments[i]; if (d && !isNil(d)) for (var k in d) out[k] = d[k]; }
|
|
return out;
|
|
};
|
|
PRIMITIVES["assoc"] = function(d) {
|
|
var out = {}; if (d && !isNil(d)) for (var k in d) out[k] = d[k];
|
|
for (var i = 1; i < arguments.length - 1; i += 2) out[arguments[i]] = arguments[i + 1];
|
|
return out;
|
|
};
|
|
PRIMITIVES["dissoc"] = function(d) {
|
|
var out = {}; for (var k in d) out[k] = d[k];
|
|
for (var i = 1; i < arguments.length; i++) delete out[arguments[i]];
|
|
return out;
|
|
};
|
|
PRIMITIVES["chunk-every"] = function(c, n) {
|
|
var r = []; for (var i = 0; i < c.length; i += n) r.push(c.slice(i, i + n)); return r;
|
|
};
|
|
PRIMITIVES["zip-pairs"] = function(c) {
|
|
var r = []; for (var i = 0; i < c.length - 1; i++) r.push([c[i], c[i + 1]]); return r;
|
|
};
|
|
PRIMITIVES["into"] = function(target, coll) {
|
|
if (Array.isArray(target)) return Array.isArray(coll) ? coll.slice() : Object.entries(coll);
|
|
var r = {}; for (var i = 0; i < coll.length; i++) { var p = coll[i]; if (Array.isArray(p) && p.length >= 2) r[p[0]] = p[1]; }
|
|
return r;
|
|
};
|
|
|
|
// Format
|
|
PRIMITIVES["format-decimal"] = function(v, p) { return Number(v).toFixed(p || 2); };
|
|
PRIMITIVES["parse-int"] = function(v, d) { var n = parseInt(v, 10); return isNaN(n) ? (d || 0) : n; };
|
|
PRIMITIVES["pluralize"] = function(n, s, p) {
|
|
if (s || (p && p !== "s")) return n == 1 ? (s || "") : (p || "s");
|
|
return n == 1 ? "" : "s";
|
|
};
|
|
PRIMITIVES["escape"] = function(s) {
|
|
return String(s).replace(/&/g,"&").replace(/</g,"<").replace(/>/g,">").replace(/"/g,""");
|
|
};
|
|
PRIMITIVES["format-date"] = function(s, fmt) {
|
|
if (!s) return "";
|
|
try {
|
|
var d = new Date(s);
|
|
if (isNaN(d.getTime())) return String(s);
|
|
var months = ["January","February","March","April","May","June","July","August","September","October","November","December"];
|
|
var short_months = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];
|
|
return fmt.replace(/%-d/g, d.getDate()).replace(/%d/g, ("0"+d.getDate()).slice(-2))
|
|
.replace(/%B/g, months[d.getMonth()]).replace(/%b/g, short_months[d.getMonth()])
|
|
.replace(/%Y/g, d.getFullYear()).replace(/%m/g, ("0"+(d.getMonth()+1)).slice(-2))
|
|
.replace(/%H/g, ("0"+d.getHours()).slice(-2)).replace(/%M/g, ("0"+d.getMinutes()).slice(-2));
|
|
} catch (e) { return String(s); }
|
|
};
|
|
PRIMITIVES["parse-datetime"] = function(s) { return s ? String(s) : NIL; };
|
|
PRIMITIVES["split-ids"] = function(s) {
|
|
if (!s) return [];
|
|
return String(s).split(",").map(function(x) { return x.trim(); }).filter(function(x) { return x; });
|
|
};
|
|
PRIMITIVES["css"] = function() {
|
|
// Stub — CSSX requires style dictionary which is browser-only
|
|
var atoms = [];
|
|
for (var i = 0; i < arguments.length; i++) {
|
|
var a = arguments[i];
|
|
if (isNil(a) || a === false) continue;
|
|
atoms.push(isKw(a) ? a.name : String(a));
|
|
}
|
|
if (!atoms.length) return NIL;
|
|
return new StyleValue("sx-" + atoms.join("-"), atoms.join(";"), [], [], []);
|
|
};
|
|
PRIMITIVES["merge-styles"] = function() {
|
|
var valid = [];
|
|
for (var i = 0; i < arguments.length; i++) {
|
|
if (isStyleValue(arguments[i])) valid.push(arguments[i]);
|
|
}
|
|
if (!valid.length) return NIL;
|
|
if (valid.length === 1) return valid[0];
|
|
var allDecls = valid.map(function(v) { return v.declarations; }).join(";");
|
|
return new StyleValue("sx-merged", allDecls, [], [], []);
|
|
};
|
|
|
|
function isPrimitive(name) { return name in PRIMITIVES; }
|
|
function getPrimitive(name) { return PRIMITIVES[name]; }
|
|
|
|
// Higher-order helpers used by the transpiled code
|
|
function map(fn, coll) { return coll.map(fn); }
|
|
function mapIndexed(fn, coll) { return coll.map(function(item, i) { return fn(i, item); }); }
|
|
function filter(fn, coll) { return coll.filter(function(x) { return isSxTruthy(fn(x)); }); }
|
|
function reduce(fn, init, coll) {
|
|
var acc = init;
|
|
for (var i = 0; i < coll.length; i++) acc = fn(acc, coll[i]);
|
|
return acc;
|
|
}
|
|
function some(fn, coll) {
|
|
for (var i = 0; i < coll.length; i++) { var r = fn(coll[i]); if (isSxTruthy(r)) return r; }
|
|
return NIL;
|
|
}
|
|
function forEach(fn, coll) { for (var i = 0; i < coll.length; i++) fn(coll[i]); return NIL; }
|
|
function isEvery(fn, coll) {
|
|
for (var i = 0; i < coll.length; i++) { if (!isSxTruthy(fn(coll[i]))) return false; }
|
|
return true;
|
|
}
|
|
function mapDict(fn, d) { var r = {}; for (var k in d) r[k] = fn(k, d[k]); return r; }
|
|
|
|
// List primitives used directly by transpiled code
|
|
var len = PRIMITIVES["len"];
|
|
var first = PRIMITIVES["first"];
|
|
var last = PRIMITIVES["last"];
|
|
var rest = PRIMITIVES["rest"];
|
|
var nth = PRIMITIVES["nth"];
|
|
var cons = PRIMITIVES["cons"];
|
|
var append = PRIMITIVES["append"];
|
|
var isEmpty = PRIMITIVES["empty?"];
|
|
var contains = PRIMITIVES["contains?"];
|
|
var startsWith = PRIMITIVES["starts-with?"];
|
|
var slice = PRIMITIVES["slice"];
|
|
var concat = PRIMITIVES["concat"];
|
|
var str = PRIMITIVES["str"];
|
|
var join = PRIMITIVES["join"];
|
|
var keys = PRIMITIVES["keys"];
|
|
var get = PRIMITIVES["get"];
|
|
var assoc = PRIMITIVES["assoc"];
|
|
var range = PRIMITIVES["range"];
|
|
function zip(a, b) { var r = []; for (var i = 0; i < Math.min(a.length, b.length); i++) r.push([a[i], b[i]]); return r; }
|
|
function append_b(arr, x) { arr.push(x); return arr; }
|
|
var apply = function(f, args) { return f.apply(null, args); };
|
|
|
|
// HTML rendering helpers
|
|
function escapeHtml(s) {
|
|
return String(s).replace(/&/g,"&").replace(/</g,"<").replace(/>/g,">").replace(/"/g,""");
|
|
}
|
|
function escapeAttr(s) { return escapeHtml(s); }
|
|
function rawHtmlContent(r) { return r.html; }
|
|
|
|
// Serializer
|
|
function serialize(val) {
|
|
if (isNil(val)) return "nil";
|
|
if (typeof val === "boolean") return val ? "true" : "false";
|
|
if (typeof val === "number") return String(val);
|
|
if (typeof val === "string") return \'"\' + val.replace(/\\\\/g, "\\\\\\\\").replace(/"/g, \'\\\\"\') + \'"\';
|
|
if (isSym(val)) return val.name;
|
|
if (isKw(val)) return ":" + val.name;
|
|
if (Array.isArray(val)) return "(" + val.map(serialize).join(" ") + ")";
|
|
return String(val);
|
|
}
|
|
|
|
function isSpecialForm(n) { return n in {
|
|
"if":1,"when":1,"cond":1,"case":1,"and":1,"or":1,"let":1,"let*":1,
|
|
"lambda":1,"fn":1,"define":1,"defcomp":1,"defmacro":1,"defstyle":1,
|
|
"defkeyframes":1,"defhandler":1,"begin":1,"do":1,
|
|
"quote":1,"quasiquote":1,"->":1,"set!":1
|
|
}; }
|
|
function isHoForm(n) { return n in {
|
|
"map":1,"map-indexed":1,"filter":1,"reduce":1,"some":1,"every?":1,"for-each":1
|
|
}; }'''
|
|
|
|
FIXUPS = '''
|
|
// =========================================================================
|
|
// Post-transpilation fixups
|
|
// =========================================================================
|
|
// The reference spec's call-lambda only handles Lambda objects, but HO forms
|
|
// (map, reduce, etc.) may receive native primitives. Wrap to handle both.
|
|
var _rawCallLambda = callLambda;
|
|
callLambda = function(f, args, callerEnv) {
|
|
if (typeof f === "function") return f.apply(null, args);
|
|
return _rawCallLambda(f, args, callerEnv);
|
|
};
|
|
|
|
// Expose render functions as primitives so SX code can call them
|
|
if (typeof renderToHtml === "function") PRIMITIVES["render-to-html"] = renderToHtml;
|
|
if (typeof renderToSx === "function") PRIMITIVES["render-to-sx"] = renderToSx;
|
|
if (typeof aser === "function") PRIMITIVES["aser"] = aser;'''
|
|
|
|
PUBLIC_API = '''
|
|
// =========================================================================
|
|
// Parser (reused from reference — hand-written for bootstrap simplicity)
|
|
// =========================================================================
|
|
|
|
// The parser is the one piece we keep as hand-written JS since the
|
|
// reference parser.sx is more of a spec than directly compilable code
|
|
// (it uses mutable cursor state that doesn't map cleanly to the
|
|
// transpiler's functional output). A future version could bootstrap
|
|
// the parser too.
|
|
|
|
function parse(text) {
|
|
var pos = 0;
|
|
function skipWs() {
|
|
while (pos < text.length) {
|
|
var ch = text[pos];
|
|
if (ch === " " || ch === "\\t" || ch === "\\n" || ch === "\\r") { pos++; continue; }
|
|
if (ch === ";") { while (pos < text.length && text[pos] !== "\\n") pos++; continue; }
|
|
break;
|
|
}
|
|
}
|
|
function readExpr() {
|
|
skipWs();
|
|
if (pos >= text.length) return undefined;
|
|
var ch = text[pos];
|
|
if (ch === "(") { pos++; return readList(")"); }
|
|
if (ch === "[") { pos++; return readList("]"); }
|
|
if (ch === "{") { pos++; return readMap(); }
|
|
if (ch === \'"\') return readString();
|
|
if (ch === ":") return readKeyword();
|
|
if (ch === "`") { pos++; return [new Symbol("quasiquote"), readExpr()]; }
|
|
if (ch === ",") {
|
|
pos++;
|
|
if (pos < text.length && text[pos] === "@") { pos++; return [new Symbol("splice-unquote"), readExpr()]; }
|
|
return [new Symbol("unquote"), readExpr()];
|
|
}
|
|
if (ch === "-" && pos + 1 < text.length && text[pos + 1] >= "0" && text[pos + 1] <= "9") return readNumber();
|
|
if (ch >= "0" && ch <= "9") return readNumber();
|
|
return readSymbol();
|
|
}
|
|
function readList(close) {
|
|
var items = [];
|
|
while (true) {
|
|
skipWs();
|
|
if (pos >= text.length) throw new Error("Unterminated list");
|
|
if (text[pos] === close) { pos++; return items; }
|
|
items.push(readExpr());
|
|
}
|
|
}
|
|
function readMap() {
|
|
var result = {};
|
|
while (true) {
|
|
skipWs();
|
|
if (pos >= text.length) throw new Error("Unterminated map");
|
|
if (text[pos] === "}") { pos++; return result; }
|
|
var key = readExpr();
|
|
var keyStr = (key && key._kw) ? key.name : String(key);
|
|
result[keyStr] = readExpr();
|
|
}
|
|
}
|
|
function readString() {
|
|
pos++; // skip "
|
|
var s = "";
|
|
while (pos < text.length) {
|
|
var ch = text[pos];
|
|
if (ch === \'"\') { pos++; return s; }
|
|
if (ch === "\\\\") { pos++; var esc = text[pos]; s += esc === "n" ? "\\n" : esc === "t" ? "\\t" : esc === "r" ? "\\r" : esc; pos++; continue; }
|
|
s += ch; pos++;
|
|
}
|
|
throw new Error("Unterminated string");
|
|
}
|
|
function readKeyword() {
|
|
pos++; // skip :
|
|
var name = readIdent();
|
|
return new Keyword(name);
|
|
}
|
|
function readNumber() {
|
|
var start = pos;
|
|
if (text[pos] === "-") pos++;
|
|
while (pos < text.length && text[pos] >= "0" && text[pos] <= "9") pos++;
|
|
if (pos < text.length && text[pos] === ".") { pos++; while (pos < text.length && text[pos] >= "0" && text[pos] <= "9") pos++; }
|
|
if (pos < text.length && (text[pos] === "e" || text[pos] === "E")) {
|
|
pos++;
|
|
if (pos < text.length && (text[pos] === "+" || text[pos] === "-")) pos++;
|
|
while (pos < text.length && text[pos] >= "0" && text[pos] <= "9") pos++;
|
|
}
|
|
return Number(text.slice(start, pos));
|
|
}
|
|
function readIdent() {
|
|
var start = pos;
|
|
while (pos < text.length && /[a-zA-Z0-9_~*+\\-><=/!?.:&]/.test(text[pos])) pos++;
|
|
return text.slice(start, pos);
|
|
}
|
|
function readSymbol() {
|
|
var name = readIdent();
|
|
if (name === "true") return true;
|
|
if (name === "false") return false;
|
|
if (name === "nil") return NIL;
|
|
return new Symbol(name);
|
|
}
|
|
var exprs = [];
|
|
while (true) {
|
|
skipWs();
|
|
if (pos >= text.length) break;
|
|
exprs.push(readExpr());
|
|
}
|
|
return exprs;
|
|
}
|
|
|
|
// =========================================================================
|
|
// Public API
|
|
// =========================================================================
|
|
|
|
var componentEnv = {};
|
|
|
|
function loadComponents(source) {
|
|
var exprs = parse(source);
|
|
for (var i = 0; i < exprs.length; i++) {
|
|
trampoline(evalExpr(exprs[i], componentEnv));
|
|
}
|
|
}
|
|
|
|
function render(source) {
|
|
var exprs = parse(source);
|
|
var frag = document.createDocumentFragment();
|
|
for (var i = 0; i < exprs.length; i++) {
|
|
var result = trampoline(evalExpr(exprs[i], merge(componentEnv)));
|
|
appendToDOM(frag, result, merge(componentEnv));
|
|
}
|
|
return frag;
|
|
}
|
|
|
|
function appendToDOM(parent, val, env) {
|
|
if (isNil(val)) return;
|
|
if (typeof val === "string") { parent.appendChild(document.createTextNode(val)); return; }
|
|
if (typeof val === "number") { parent.appendChild(document.createTextNode(String(val))); return; }
|
|
if (val._raw) { var t = document.createElement("template"); t.innerHTML = val.html; parent.appendChild(t.content); return; }
|
|
if (Array.isArray(val)) {
|
|
// Could be a rendered element or a list of results
|
|
if (val.length > 0 && isSym(val[0])) {
|
|
// It's an unevaluated expression — evaluate it
|
|
var result = trampoline(evalExpr(val, env));
|
|
appendToDOM(parent, result, env);
|
|
} else {
|
|
for (var i = 0; i < val.length; i++) appendToDOM(parent, val[i], env);
|
|
}
|
|
return;
|
|
}
|
|
parent.appendChild(document.createTextNode(String(val)));
|
|
}
|
|
|
|
var SxRef = {
|
|
parse: parse,
|
|
eval: function(expr, env) { return trampoline(evalExpr(expr, env || merge(componentEnv))); },
|
|
loadComponents: loadComponents,
|
|
render: render,
|
|
serialize: serialize,
|
|
NIL: NIL,
|
|
Symbol: Symbol,
|
|
Keyword: Keyword,
|
|
componentEnv: componentEnv,
|
|
_version: "ref-1.0 (bootstrap-compiled)"
|
|
};
|
|
|
|
if (typeof module !== "undefined" && module.exports) module.exports = SxRef;
|
|
else global.SxRef = SxRef;'''
|
|
|
|
EPILOGUE = '''
|
|
})(typeof globalThis !== "undefined" ? globalThis : typeof window !== "undefined" ? window : this);'''
|
|
|
|
|
|
# ---------------------------------------------------------------------------
|
|
# Main
|
|
# ---------------------------------------------------------------------------
|
|
|
|
if __name__ == "__main__":
|
|
print(compile_ref_to_js())
|