From 6b9d1eeebc45d9e75bab5c6b689c036a4fd30425 Mon Sep 17 00:00:00 2001 From: Ramsey Nasser Date: Thu, 27 Jun 2024 16:11:04 -0400 Subject: [PATCH] Initial commit --- .gitignore | 2 + compiler.js | 173 ++++++++ grammar.js | 1021 +++++++++++++++++++++++++++++++++++++++++++++ grammar.pegjs | 26 ++ index.html | 20 + main.js | 62 +++ package-lock.json | 928 ++++++++++++++++++++++++++++++++++++++++ package.json | 18 + style.css | 41 ++ vite.config.js | 14 + 10 files changed, 2305 insertions(+) create mode 100644 .gitignore create mode 100644 compiler.js create mode 100644 grammar.js create mode 100644 grammar.pegjs create mode 100644 index.html create mode 100644 main.js create mode 100644 package-lock.json create mode 100644 package.json create mode 100644 style.css create mode 100644 vite.config.js diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..44d646d --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +node_modules +dist/ diff --git a/compiler.js b/compiler.js new file mode 100644 index 0000000..3e5c32b --- /dev/null +++ b/compiler.js @@ -0,0 +1,173 @@ +import * as grammar from "./grammar.js"; +import * as escodegen from 'escodegen' + +class Record { constructor(children) { this.children = children } } +class Vector { constructor(children) { this.children = children } } +class Literal { constructor(value) { this.value = value } } +class Symbol { constructor(name) { this.name = name } } +class Let { constructor(bindings, expressions) { this.bindings = bindings, this.expressions = expressions } } +class Yield { constructor(expression, delegate) { this.expression = expression, this.delegate = delegate } } +class Invoke { constructor(callee, args) { this.callee = callee, this.args = args } } +class Operator { + constructor(op, args) { + this.op = op + if (args.length === 2) { + this.left = args[0] + this.right = args[1] + } else if (args.length > 2) { + this.left = args[0] + this.right = new Operator(op, args.slice(1)) + } + } +} +class Unknown { constructor(expression) { this.expression = expression } } + +const SPECIAL = { + let(body) { + const [bindings, ...expressions] = body + return new Let(bindings, expressions) + }, + yield: ([expression]) => new Yield(expression, false), + 'yield*': ([expression]) => new Yield(expression, true), + 'and': operands => new Operator('&&', operands), + 'or': operands => new Operator('||', operands), + '+': operands => new Operator('+', operands), + '-': operands => new Operator('-', operands), + '*': operands => new Operator('*', operands), + '/': operands => new Operator('/', operands), +} + +function analyzeList(elementSexprs, options = {}) { + const elementAsts = elementSexprs.map(e => analyze(e, options)) + const macros = options.macros || {} + const [head, ...rest] = elementAsts + if (head.constructor.name === 'Symbol') { + const lookup = head.name.toLowerCase() + const special = SPECIAL[lookup] + if (special) + return special(rest) + const macro = macros[lookup] + if (macro) { + return analyze(macro(elementSexprs.slice(1)), options) + } + return new Invoke(head, rest) + } else { + return new Invoke(head, rest) + } +} + +export function analyze(expression, options = {}) { + if (expression.list) return analyzeList(expression.list, options) + if (expression.record) return new Record(expression.record.map(({ key, value }) => { return { key: analyze(key, options), value: analyze(value, options) } })) + if (expression.vector) return new Vector(expression.vector.map(e => analyze(e, options))) + if (expression.symbol) return new Symbol(expression.symbol) + if (typeof expression === 'string') return new Literal(expression) + if (typeof expression === 'number') return new Literal(expression) + return new Unknown(expression) +} + +function* bindings(vector) { + let pair = [] + for (const expression of vector.children) { + pair.push(expression) + if (pair.length === 2) { + yield pair + pair = [] + } + } +} + +function codegen_bindings(vector) { + return [...bindings(vector)].map(([symbol, value]) => { + return { + type: 'VariableDeclaration', + kind: 'let', + declarations: [ + { + type: 'VariableDeclarator', + id: { + type: 'Identifier', + name: symbol.name + }, + init: codegen(value) + } + ] + } + }) +} + +export function codegen(ast) { + switch (ast.constructor.name) { + case 'Let': + return { + type: 'ExpressionStatement', + expression: { + type: 'CallExpression', + arguments: [], + callee: { + type: 'ArrowFunctionExpression', + params: [], + body: { + type: 'BlockStatement', + body: [ + ...codegen_bindings(ast.bindings), + ...ast.expressions.slice(0, ast.expressions.length - 1).map(codegen), + { + type: 'ReturnStatement', + argument: codegen(ast.expressions[ast.expressions.length - 1]) + } + ] + }, + generator: false, + expression: false, + async: false + } + } + + } + case 'Symbol': + return { + type: 'Identifier', + name: ast.name + } + case 'Invoke': + return { + type: 'CallExpression', + callee: codegen(ast.callee), + arguments: ast.args.map(codegen) + } + case 'Yield': + return { + type: 'YieldExpression', + argument: codegen(ast.expression), + delegate: ast.delegate + } + case 'Operator': + return { + type: 'BinaryExpression', + operator: ast.op, + left: codegen(ast.left), + right: codegen(ast.right), + } + case 'Literal': + return { + type: 'Literal', + value: ast.value + } + default: + throw `no codegen for ${ast.constructor.name}` + } +} + +export function parse(s) { + return grammar.parse(s) +} + +export function compile(s, options = {}) { + return escodegen.generate(codegen(analyze(parse(s), options))) +} + + +// console.log(v) +// console.log(analyze(v, { macros })) +// console.log(escodegen.generate(codegen(analyze(v, { macros })))) \ No newline at end of file diff --git a/grammar.js b/grammar.js new file mode 100644 index 0000000..815d415 --- /dev/null +++ b/grammar.js @@ -0,0 +1,1021 @@ +// @generated by Peggy 4.0.3. +// +// https://peggyjs.org/ + + +function peg$subclass(child, parent) { + function C() { this.constructor = child; } + C.prototype = parent.prototype; + child.prototype = new C(); +} + +function peg$SyntaxError(message, expected, found, location) { + var self = Error.call(this, message); + // istanbul ignore next Check is a necessary evil to support older environments + if (Object.setPrototypeOf) { + Object.setPrototypeOf(self, peg$SyntaxError.prototype); + } + self.expected = expected; + self.found = found; + self.location = location; + self.name = "SyntaxError"; + return self; +} + +peg$subclass(peg$SyntaxError, Error); + +function peg$padEnd(str, targetLength, padString) { + padString = padString || " "; + if (str.length > targetLength) { return str; } + targetLength -= str.length; + padString += padString.repeat(targetLength); + return str + padString.slice(0, targetLength); +} + +peg$SyntaxError.prototype.format = function(sources) { + var str = "Error: " + this.message; + if (this.location) { + var src = null; + var k; + for (k = 0; k < sources.length; k++) { + if (sources[k].source === this.location.source) { + src = sources[k].text.split(/\r\n|\n|\r/g); + break; + } + } + var s = this.location.start; + var offset_s = (this.location.source && (typeof this.location.source.offset === "function")) + ? this.location.source.offset(s) + : s; + var loc = this.location.source + ":" + offset_s.line + ":" + offset_s.column; + if (src) { + var e = this.location.end; + var filler = peg$padEnd("", offset_s.line.toString().length, ' '); + var line = src[s.line - 1]; + var last = s.line === e.line ? e.column : line.length + 1; + var hatLen = (last - s.column) || 1; + str += "\n --> " + loc + "\n" + + filler + " |\n" + + offset_s.line + " | " + line + "\n" + + filler + " | " + peg$padEnd("", s.column - 1, ' ') + + peg$padEnd("", hatLen, "^"); + } else { + str += "\n at " + loc; + } + } + return str; +}; + +peg$SyntaxError.buildMessage = function(expected, found) { + var DESCRIBE_EXPECTATION_FNS = { + literal: function(expectation) { + return "\"" + literalEscape(expectation.text) + "\""; + }, + + class: function(expectation) { + var escapedParts = expectation.parts.map(function(part) { + return Array.isArray(part) + ? classEscape(part[0]) + "-" + classEscape(part[1]) + : classEscape(part); + }); + + return "[" + (expectation.inverted ? "^" : "") + escapedParts.join("") + "]"; + }, + + any: function() { + return "any character"; + }, + + end: function() { + return "end of input"; + }, + + other: function(expectation) { + return expectation.description; + } + }; + + function hex(ch) { + return ch.charCodeAt(0).toString(16).toUpperCase(); + } + + function literalEscape(s) { + return s + .replace(/\\/g, "\\\\") + .replace(/"/g, "\\\"") + .replace(/\0/g, "\\0") + .replace(/\t/g, "\\t") + .replace(/\n/g, "\\n") + .replace(/\r/g, "\\r") + .replace(/[\x00-\x0F]/g, function(ch) { return "\\x0" + hex(ch); }) + .replace(/[\x10-\x1F\x7F-\x9F]/g, function(ch) { return "\\x" + hex(ch); }); + } + + function classEscape(s) { + return s + .replace(/\\/g, "\\\\") + .replace(/\]/g, "\\]") + .replace(/\^/g, "\\^") + .replace(/-/g, "\\-") + .replace(/\0/g, "\\0") + .replace(/\t/g, "\\t") + .replace(/\n/g, "\\n") + .replace(/\r/g, "\\r") + .replace(/[\x00-\x0F]/g, function(ch) { return "\\x0" + hex(ch); }) + .replace(/[\x10-\x1F\x7F-\x9F]/g, function(ch) { return "\\x" + hex(ch); }); + } + + function describeExpectation(expectation) { + return DESCRIBE_EXPECTATION_FNS[expectation.type](expectation); + } + + function describeExpected(expected) { + var descriptions = expected.map(describeExpectation); + var i, j; + + descriptions.sort(); + + if (descriptions.length > 0) { + for (i = 1, j = 1; i < descriptions.length; i++) { + if (descriptions[i - 1] !== descriptions[i]) { + descriptions[j] = descriptions[i]; + j++; + } + } + descriptions.length = j; + } + + switch (descriptions.length) { + case 1: + return descriptions[0]; + + case 2: + return descriptions[0] + " or " + descriptions[1]; + + default: + return descriptions.slice(0, -1).join(", ") + + ", or " + + descriptions[descriptions.length - 1]; + } + } + + function describeFound(found) { + return found ? "\"" + literalEscape(found) + "\"" : "end of input"; + } + + return "Expected " + describeExpected(expected) + " but " + describeFound(found) + " found."; +}; + +function peg$parse(input, options) { + options = options !== undefined ? options : {}; + + var peg$FAILED = {}; + var peg$source = options.grammarSource; + + var peg$startRuleFunctions = { start: peg$parsestart }; + var peg$startRuleFunction = peg$parsestart; + + var peg$c0 = "("; + var peg$c1 = ")"; + var peg$c2 = "["; + var peg$c3 = "]"; + var peg$c4 = "{"; + var peg$c5 = "}"; + var peg$c6 = ":"; + var peg$c7 = "\""; + var peg$c8 = "-"; + var peg$c9 = "."; + var peg$c10 = "0x"; + + var peg$r0 = /^[^ \t\n\r,()[\]{}]/; + var peg$r1 = /^[^"]/; + var peg$r2 = /^[0-9]/; + var peg$r3 = /^[0-9A-Fa-f]/; + var peg$r4 = /^[ \t\n\r,]/; + + var peg$e0 = peg$literalExpectation("(", false); + var peg$e1 = peg$literalExpectation(")", false); + var peg$e2 = peg$literalExpectation("[", false); + var peg$e3 = peg$literalExpectation("]", false); + var peg$e4 = peg$literalExpectation("{", false); + var peg$e5 = peg$literalExpectation("}", false); + var peg$e6 = peg$classExpectation([" ", "\t", "\n", "\r", ",", "(", ")", "[", "]", "{", "}"], true, false); + var peg$e7 = peg$literalExpectation(":", false); + var peg$e8 = peg$literalExpectation("\"", false); + var peg$e9 = peg$classExpectation(["\""], true, false); + var peg$e10 = peg$literalExpectation("-", false); + var peg$e11 = peg$classExpectation([["0", "9"]], false, false); + var peg$e12 = peg$literalExpectation(".", false); + var peg$e13 = peg$literalExpectation("0x", false); + var peg$e14 = peg$classExpectation([["0", "9"], ["A", "F"], ["a", "f"]], false, false); + var peg$e15 = peg$otherExpectation("whitespace"); + var peg$e16 = peg$classExpectation([" ", "\t", "\n", "\r", ","], false, false); + + var peg$f0 = function(e) { return e }; + var peg$f1 = function(list) { return { list } }; + var peg$f2 = function(vector) { return { vector } }; + var peg$f3 = function(record) { return { record } }; + var peg$f4 = function(key, value) { return { key, value } }; + var peg$f5 = function(s) { return { key:s, value:s } }; + var peg$f6 = function(symbol) { return { symbol: symbol.join('') } }; + var peg$f7 = function(s) { return s.symbol }; + var peg$f8 = function(s) { return s.join('') }; + var peg$f9 = function() { return parseFloat(text()); }; + var peg$f10 = function() { return parseInt(text(), 16); }; + var peg$f11 = function() { return parseInt(text(), 10); }; + var peg$currPos = options.peg$currPos | 0; + var peg$savedPos = peg$currPos; + var peg$posDetailsCache = [{ line: 1, column: 1 }]; + var peg$maxFailPos = peg$currPos; + var peg$maxFailExpected = options.peg$maxFailExpected || []; + var peg$silentFails = options.peg$silentFails | 0; + + var peg$result; + + if (options.startRule) { + if (!(options.startRule in peg$startRuleFunctions)) { + throw new Error("Can't start parsing from rule \"" + options.startRule + "\"."); + } + + peg$startRuleFunction = peg$startRuleFunctions[options.startRule]; + } + + function text() { + return input.substring(peg$savedPos, peg$currPos); + } + + function offset() { + return peg$savedPos; + } + + function range() { + return { + source: peg$source, + start: peg$savedPos, + end: peg$currPos + }; + } + + function location() { + return peg$computeLocation(peg$savedPos, peg$currPos); + } + + function expected(description, location) { + location = location !== undefined + ? location + : peg$computeLocation(peg$savedPos, peg$currPos); + + throw peg$buildStructuredError( + [peg$otherExpectation(description)], + input.substring(peg$savedPos, peg$currPos), + location + ); + } + + function error(message, location) { + location = location !== undefined + ? location + : peg$computeLocation(peg$savedPos, peg$currPos); + + throw peg$buildSimpleError(message, location); + } + + function peg$literalExpectation(text, ignoreCase) { + return { type: "literal", text: text, ignoreCase: ignoreCase }; + } + + function peg$classExpectation(parts, inverted, ignoreCase) { + return { type: "class", parts: parts, inverted: inverted, ignoreCase: ignoreCase }; + } + + function peg$anyExpectation() { + return { type: "any" }; + } + + function peg$endExpectation() { + return { type: "end" }; + } + + function peg$otherExpectation(description) { + return { type: "other", description: description }; + } + + function peg$computePosDetails(pos) { + var details = peg$posDetailsCache[pos]; + var p; + + if (details) { + return details; + } else { + if (pos >= peg$posDetailsCache.length) { + p = peg$posDetailsCache.length - 1; + } else { + p = pos; + while (!peg$posDetailsCache[--p]) {} + } + + details = peg$posDetailsCache[p]; + details = { + line: details.line, + column: details.column + }; + + while (p < pos) { + if (input.charCodeAt(p) === 10) { + details.line++; + details.column = 1; + } else { + details.column++; + } + + p++; + } + + peg$posDetailsCache[pos] = details; + + return details; + } + } + + function peg$computeLocation(startPos, endPos, offset) { + var startPosDetails = peg$computePosDetails(startPos); + var endPosDetails = peg$computePosDetails(endPos); + + var res = { + source: peg$source, + start: { + offset: startPos, + line: startPosDetails.line, + column: startPosDetails.column + }, + end: { + offset: endPos, + line: endPosDetails.line, + column: endPosDetails.column + } + }; + if (offset && peg$source && (typeof peg$source.offset === "function")) { + res.start = peg$source.offset(res.start); + res.end = peg$source.offset(res.end); + } + return res; + } + + function peg$fail(expected) { + if (peg$currPos < peg$maxFailPos) { return; } + + if (peg$currPos > peg$maxFailPos) { + peg$maxFailPos = peg$currPos; + peg$maxFailExpected = []; + } + + peg$maxFailExpected.push(expected); + } + + function peg$buildSimpleError(message, location) { + return new peg$SyntaxError(message, null, null, location); + } + + function peg$buildStructuredError(expected, found, location) { + return new peg$SyntaxError( + peg$SyntaxError.buildMessage(expected, found), + expected, + found, + location + ); + } + + function peg$parsestart() { + var s0; + + s0 = peg$parseexpression(); + + return s0; + } + + function peg$parseexpression() { + var s0, s1, s2; + + s0 = peg$currPos; + s1 = peg$parselist(); + if (s1 === peg$FAILED) { + s1 = peg$parsevector(); + if (s1 === peg$FAILED) { + s1 = peg$parserecord(); + if (s1 === peg$FAILED) { + s1 = peg$parsestring(); + if (s1 === peg$FAILED) { + s1 = peg$parsenumber(); + if (s1 === peg$FAILED) { + s1 = peg$parsesymbol(); + } + } + } + } + } + if (s1 !== peg$FAILED) { + s2 = peg$parse_(); + peg$savedPos = s0; + s0 = peg$f0(s1); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parselist() { + var s0, s1, s2, s3, s4; + + s0 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 40) { + s1 = peg$c0; + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e0); } + } + if (s1 !== peg$FAILED) { + s2 = peg$parse_(); + s3 = []; + s4 = peg$parseexpression(); + if (s4 !== peg$FAILED) { + while (s4 !== peg$FAILED) { + s3.push(s4); + s4 = peg$parseexpression(); + } + } else { + s3 = peg$FAILED; + } + if (s3 !== peg$FAILED) { + if (input.charCodeAt(peg$currPos) === 41) { + s4 = peg$c1; + peg$currPos++; + } else { + s4 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e1); } + } + if (s4 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f1(s3); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parsevector() { + var s0, s1, s2, s3, s4; + + s0 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 91) { + s1 = peg$c2; + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e2); } + } + if (s1 !== peg$FAILED) { + s2 = peg$parse_(); + s3 = []; + s4 = peg$parseexpression(); + if (s4 !== peg$FAILED) { + while (s4 !== peg$FAILED) { + s3.push(s4); + s4 = peg$parseexpression(); + } + } else { + s3 = peg$FAILED; + } + if (s3 !== peg$FAILED) { + if (input.charCodeAt(peg$currPos) === 93) { + s4 = peg$c3; + peg$currPos++; + } else { + s4 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e3); } + } + if (s4 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f2(s3); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parserecord() { + var s0, s1, s2, s3, s4; + + s0 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 123) { + s1 = peg$c4; + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e4); } + } + if (s1 !== peg$FAILED) { + s2 = peg$parse_(); + s3 = []; + s4 = peg$parseentry(); + if (s4 !== peg$FAILED) { + while (s4 !== peg$FAILED) { + s3.push(s4); + s4 = peg$parseentry(); + } + } else { + s3 = peg$FAILED; + } + if (s3 !== peg$FAILED) { + if (input.charCodeAt(peg$currPos) === 125) { + s4 = peg$c5; + peg$currPos++; + } else { + s4 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e5); } + } + if (s4 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f3(s3); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseentry() { + var s0; + + s0 = peg$parsekey_value(); + if (s0 === peg$FAILED) { + s0 = peg$parseshorthand(); + } + + return s0; + } + + function peg$parsekey_value() { + var s0, s1, s2; + + s0 = peg$currPos; + s1 = peg$parsestring(); + if (s1 !== peg$FAILED) { + s2 = peg$parseexpression(); + if (s2 !== peg$FAILED) { + peg$savedPos = s0; + s0 = peg$f4(s1, s2); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseshorthand() { + var s0, s1; + + s0 = peg$currPos; + s1 = peg$parsesymbol(); + if (s1 !== peg$FAILED) { + peg$savedPos = s0; + s1 = peg$f5(s1); + } + s0 = s1; + + return s0; + } + + function peg$parsesymbol() { + var s0, s1, s2; + + s0 = peg$currPos; + s1 = []; + s2 = input.charAt(peg$currPos); + if (peg$r0.test(s2)) { + peg$currPos++; + } else { + s2 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e6); } + } + if (s2 !== peg$FAILED) { + while (s2 !== peg$FAILED) { + s1.push(s2); + s2 = input.charAt(peg$currPos); + if (peg$r0.test(s2)) { + peg$currPos++; + } else { + s2 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e6); } + } + } + } else { + s1 = peg$FAILED; + } + if (s1 !== peg$FAILED) { + s2 = peg$parse_(); + peg$savedPos = s0; + s0 = peg$f6(s1); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parsestring() { + var s0; + + s0 = peg$parsekeyword(); + if (s0 === peg$FAILED) { + s0 = peg$parsequoted_string(); + } + + return s0; + } + + function peg$parsekeyword() { + var s0, s1, s2, s3; + + s0 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 58) { + s1 = peg$c6; + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e7); } + } + if (s1 !== peg$FAILED) { + s2 = peg$parsesymbol(); + if (s2 !== peg$FAILED) { + s3 = peg$parse_(); + peg$savedPos = s0; + s0 = peg$f7(s2); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parsequoted_string() { + var s0, s1, s2, s3, s4; + + s0 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 34) { + s1 = peg$c7; + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e8); } + } + if (s1 !== peg$FAILED) { + s2 = []; + s3 = input.charAt(peg$currPos); + if (peg$r1.test(s3)) { + peg$currPos++; + } else { + s3 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e9); } + } + while (s3 !== peg$FAILED) { + s2.push(s3); + s3 = input.charAt(peg$currPos); + if (peg$r1.test(s3)) { + peg$currPos++; + } else { + s3 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e9); } + } + } + if (input.charCodeAt(peg$currPos) === 34) { + s3 = peg$c7; + peg$currPos++; + } else { + s3 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e8); } + } + if (s3 !== peg$FAILED) { + s4 = peg$parse_(); + peg$savedPos = s0; + s0 = peg$f8(s2); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parsenumber() { + var s0; + + s0 = peg$parsefloat(); + if (s0 === peg$FAILED) { + s0 = peg$parsehex(); + if (s0 === peg$FAILED) { + s0 = peg$parseinteger(); + } + } + + return s0; + } + + function peg$parsefloat() { + var s0, s1, s2, s3, s4, s5; + + s0 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 45) { + s1 = peg$c8; + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e10); } + } + if (s1 === peg$FAILED) { + s1 = null; + } + s2 = []; + s3 = input.charAt(peg$currPos); + if (peg$r2.test(s3)) { + peg$currPos++; + } else { + s3 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e11); } + } + while (s3 !== peg$FAILED) { + s2.push(s3); + s3 = input.charAt(peg$currPos); + if (peg$r2.test(s3)) { + peg$currPos++; + } else { + s3 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e11); } + } + } + if (input.charCodeAt(peg$currPos) === 46) { + s3 = peg$c9; + peg$currPos++; + } else { + s3 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e12); } + } + if (s3 !== peg$FAILED) { + s4 = []; + s5 = input.charAt(peg$currPos); + if (peg$r2.test(s5)) { + peg$currPos++; + } else { + s5 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e11); } + } + if (s5 !== peg$FAILED) { + while (s5 !== peg$FAILED) { + s4.push(s5); + s5 = input.charAt(peg$currPos); + if (peg$r2.test(s5)) { + peg$currPos++; + } else { + s5 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e11); } + } + } + } else { + s4 = peg$FAILED; + } + if (s4 !== peg$FAILED) { + s5 = peg$parse_(); + peg$savedPos = s0; + s0 = peg$f9(); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parsehex() { + var s0, s1, s2, s3, s4; + + s0 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 45) { + s1 = peg$c8; + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e10); } + } + if (s1 === peg$FAILED) { + s1 = null; + } + if (input.substr(peg$currPos, 2) === peg$c10) { + s2 = peg$c10; + peg$currPos += 2; + } else { + s2 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e13); } + } + if (s2 !== peg$FAILED) { + s3 = []; + s4 = input.charAt(peg$currPos); + if (peg$r3.test(s4)) { + peg$currPos++; + } else { + s4 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e14); } + } + if (s4 !== peg$FAILED) { + while (s4 !== peg$FAILED) { + s3.push(s4); + s4 = input.charAt(peg$currPos); + if (peg$r3.test(s4)) { + peg$currPos++; + } else { + s4 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e14); } + } + } + } else { + s3 = peg$FAILED; + } + if (s3 !== peg$FAILED) { + s4 = peg$parse_(); + peg$savedPos = s0; + s0 = peg$f10(); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parseinteger() { + var s0, s1, s2, s3; + + s0 = peg$currPos; + if (input.charCodeAt(peg$currPos) === 45) { + s1 = peg$c8; + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e10); } + } + if (s1 === peg$FAILED) { + s1 = null; + } + s2 = []; + s3 = input.charAt(peg$currPos); + if (peg$r2.test(s3)) { + peg$currPos++; + } else { + s3 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e11); } + } + if (s3 !== peg$FAILED) { + while (s3 !== peg$FAILED) { + s2.push(s3); + s3 = input.charAt(peg$currPos); + if (peg$r2.test(s3)) { + peg$currPos++; + } else { + s3 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e11); } + } + } + } else { + s2 = peg$FAILED; + } + if (s2 !== peg$FAILED) { + s3 = peg$parse_(); + peg$savedPos = s0; + s0 = peg$f11(); + } else { + peg$currPos = s0; + s0 = peg$FAILED; + } + + return s0; + } + + function peg$parse_() { + var s0, s1; + + peg$silentFails++; + s0 = []; + s1 = input.charAt(peg$currPos); + if (peg$r4.test(s1)) { + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e16); } + } + while (s1 !== peg$FAILED) { + s0.push(s1); + s1 = input.charAt(peg$currPos); + if (peg$r4.test(s1)) { + peg$currPos++; + } else { + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e16); } + } + } + peg$silentFails--; + s1 = peg$FAILED; + if (peg$silentFails === 0) { peg$fail(peg$e15); } + + return s0; + } + + peg$result = peg$startRuleFunction(); + + if (options.peg$library) { + return /** @type {any} */ ({ + peg$result, + peg$currPos, + peg$FAILED, + peg$maxFailExpected, + peg$maxFailPos + }); + } + if (peg$result !== peg$FAILED && peg$currPos === input.length) { + return peg$result; + } else { + if (peg$result !== peg$FAILED && peg$currPos < input.length) { + peg$fail(peg$endExpectation()); + } + + throw peg$buildStructuredError( + peg$maxFailExpected, + peg$maxFailPos < input.length ? input.charAt(peg$maxFailPos) : null, + peg$maxFailPos < input.length + ? peg$computeLocation(peg$maxFailPos, peg$maxFailPos + 1) + : peg$computeLocation(peg$maxFailPos, peg$maxFailPos) + ); + } +} + +const peg$allowedStartRules = [ + "start" +]; + +export { + peg$allowedStartRules as StartRules, + peg$SyntaxError as SyntaxError, + peg$parse as parse +}; diff --git a/grammar.pegjs b/grammar.pegjs new file mode 100644 index 0000000..4e24b5a --- /dev/null +++ b/grammar.pegjs @@ -0,0 +1,26 @@ +start = expression +expression = e:(list / vector / record / string / number / symbol) _ { return e } + +list = '(' _ list:expression+ ')' { return { list } } + +vector = '[' _ vector:expression+ ']' { return { vector } } + +record = '{' _ record:entry+ '}' { return { record } } + +entry = key_value / shorthand +key_value = key:string value:expression { return { key, value } } +shorthand = s:symbol { return { key:s, value:s } } + +symbol = symbol:[^ \t\n\r,\(\)\[\]\{\}]+ _ { return { symbol: symbol.join('') } } + +string = keyword / quoted_string +keyword = ':' s:symbol _ { return s.symbol } +quoted_string = '"' s:[^"]* '"' _ { return s.join('') } + +number = float / hex / integer +float = '-'? [0-9]* '.' [0-9]+ _ { return parseFloat(text()); } +hex = '-'? '0x' [0-9A-Fa-f]+ _ { return parseInt(text(), 16); } +integer = '-'? [0-9]+ _ { return parseInt(text(), 10); } + +_ "whitespace" + = [ \t\n\r,]* \ No newline at end of file diff --git a/index.html b/index.html new file mode 100644 index 0000000..282322e --- /dev/null +++ b/index.html @@ -0,0 +1,20 @@ + + + + + + + mex + + + + + +
+
+ + 

+  

+  
+

+
\ No newline at end of file
diff --git a/main.js b/main.js
new file mode 100644
index 0000000..186d76a
--- /dev/null
+++ b/main.js
@@ -0,0 +1,62 @@
+import * as mex from './compiler.js'
+import 'reset.css'
+// import '@fontsource/ibm-plex-mono';
+import './style.css'
+
+const macros = {
+    '->'(rest) {
+        return rest.reduce((result, next) => {
+            if (next.list) {
+                return { list: [next.list[0], result, ...next.list.slice(1)] }
+            } else {
+                return { list: [next, result] }
+            }
+        })
+    },
+    '->>'(rest) {
+        return rest.reduce((result, next) => {
+            if (next.list) {
+                return { list: [...next.list, result] }
+            } else {
+                return { list: [next, result] }
+            }
+        })
+    }
+}
+
+const textarea = document.querySelector('textarea')
+const pre = document.querySelector('pre')
+const nav = document.querySelector('nav')
+
+function update() {
+    try {
+        const js = mex.compile(textarea?.value, { macros })
+        pre.textContent = js
+    } catch (e) {
+        pre.textContent = e
+
+    }
+}
+update()
+textarea?.addEventListener('input', update)
+
+
+
+const examples = [
+    { name: '->', code: `(-> a b c)` },
+    { name: '+', code: `(+ a b c)` },
+    {
+        name: 'let',
+        code: `(let [a 1 b (* 2 a)] (foo a b))`
+    }
+]
+
+for (const example of examples) {
+    const button = document.createElement('button')
+    button.textContent = example.name
+    button.onclick = function () {
+        textarea.value = example.code
+        update()
+    }
+    nav?.appendChild(button)
+}
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..e0439a1
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,928 @@
+{
+  "name": "mex",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "dependencies": {
+        "@fontsource/ibm-plex-mono": "^5.0.13",
+        "escodegen": "^2.1.0",
+        "git-describe": "^4.1.1",
+        "peggy": "^4.0.3",
+        "reset.css": "^2.0.2",
+        "vite": "^5.3.2"
+      }
+    },
+    "node_modules/@esbuild/aix-ppc64": {
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+      "cpu": [
+        "ppc64"
+      ],
+      "optional": true,
+      "os": [
+        "aix"
+      ],
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/@esbuild/android-arm": {
+      "version": "0.21.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.21.5.tgz",
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+        "arm"
+      ],
+      "optional": true,
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/@esbuild/android-arm64": {
+      "version": "0.21.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.21.5.tgz",
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+      "cpu": [
+        "arm64"
+      ],
+      "optional": true,
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/@esbuild/android-x64": {
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+      "resolved": "https://registry.npmjs.org/@esbuild/android-x64/-/android-x64-0.21.5.tgz",
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+      "cpu": [
+        "x64"
+      ],
+      "optional": true,
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/@esbuild/darwin-arm64": {
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+        "arm64"
+      ],
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/@esbuild/darwin-x64": {
+      "version": "0.21.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/darwin-x64/-/darwin-x64-0.21.5.tgz",
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+        "x64"
+      ],
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
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+      }
+    },
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+        "arm64"
+      ],
+      "optional": true,
+      "os": [
+        "freebsd"
+      ],
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/@esbuild/freebsd-x64": {
+      "version": "0.21.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/freebsd-x64/-/freebsd-x64-0.21.5.tgz",
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+        "x64"
+      ],
+      "optional": true,
+      "os": [
+        "freebsd"
+      ],
+      "engines": {
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+      }
+    },
+    "node_modules/@esbuild/linux-arm": {
+      "version": "0.21.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-arm/-/linux-arm-0.21.5.tgz",
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+        "arm"
+      ],
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
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+      }
+    },
+    "node_modules/@esbuild/linux-arm64": {
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+        "arm64"
+      ],
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/@esbuild/linux-ia32": {
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+      "resolved": "https://registry.npmjs.org/@esbuild/linux-ia32/-/linux-ia32-0.21.5.tgz",
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+        "ia32"
+      ],
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/@esbuild/linux-loong64": {
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+      "cpu": [
+        "loong64"
+      ],
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/@esbuild/linux-mips64el": {
+      "version": "0.21.5",
+      "resolved": "https://registry.npmjs.org/@esbuild/linux-mips64el/-/linux-mips64el-0.21.5.tgz",
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+      "cpu": [
+        "mips64el"
+      ],
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+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/@esbuild/linux-ppc64": {
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+      "os": [
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+      }
+    },
+    "node_modules/@esbuild/linux-riscv64": {
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+        "riscv64"
+      ],
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">=12"
+      }
+    },
+    "node_modules/@esbuild/linux-s390x": {
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+      "resolved": "https://registry.npmjs.org/@esbuild/linux-s390x/-/linux-s390x-0.21.5.tgz",
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+      "cpu": [
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+      "optional": true,
+      "bin": {
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+      }
+    },
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+      "resolved": "https://registry.npmjs.org/lodash/-/lodash-4.17.21.tgz",
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+    },
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+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-6.0.0.tgz",
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+      "dependencies": {
+        "yallist": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/nanoid": {
+      "version": "3.3.7",
+      "resolved": "https://registry.npmjs.org/nanoid/-/nanoid-3.3.7.tgz",
+      "integrity": "sha512-eSRppjcPIatRIMC1U6UngP8XFcz8MQWGQdt1MTBQ7NaAmvXDfvNxbvWV3x2y6CdEUciCSsDHDQZbhYaB8QEo2g==",
+      "funding": [
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
+      "bin": {
+        "nanoid": "bin/nanoid.cjs"
+      },
+      "engines": {
+        "node": "^10 || ^12 || ^13.7 || ^14 || >=15.0.1"
+      }
+    },
+    "node_modules/peggy": {
+      "version": "4.0.3",
+      "resolved": "https://registry.npmjs.org/peggy/-/peggy-4.0.3.tgz",
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+      "dependencies": {
+        "@peggyjs/from-mem": "1.3.0",
+        "commander": "^12.1.0",
+        "source-map-generator": "0.8.0"
+      },
+      "bin": {
+        "peggy": "bin/peggy.js"
+      },
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/picocolors": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/picocolors/-/picocolors-1.0.1.tgz",
+      "integrity": "sha512-anP1Z8qwhkbmu7MFP5iTt+wQKXgwzf7zTyGlcdzabySa9vd0Xt392U0rVmz9poOaBj0uHJKyyo9/upk0HrEQew=="
+    },
+    "node_modules/postcss": {
+      "version": "8.4.38",
+      "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.4.38.tgz",
+      "integrity": "sha512-Wglpdk03BSfXkHoQa3b/oulrotAkwrlLDRSOb9D0bN86FdRyE9lppSp33aHNPgBa0JKCoB+drFLZkQoRRYae5A==",
+      "funding": [
+        {
+          "type": "opencollective",
+          "url": "https://opencollective.com/postcss/"
+        },
+        {
+          "type": "tidelift",
+          "url": "https://tidelift.com/funding/github/npm/postcss"
+        },
+        {
+          "type": "github",
+          "url": "https://github.com/sponsors/ai"
+        }
+      ],
+      "dependencies": {
+        "nanoid": "^3.3.7",
+        "picocolors": "^1.0.0",
+        "source-map-js": "^1.2.0"
+      },
+      "engines": {
+        "node": "^10 || ^12 || >=14"
+      }
+    },
+    "node_modules/reset.css": {
+      "version": "2.0.2",
+      "resolved": "https://registry.npmjs.org/reset.css/-/reset.css-2.0.2.tgz",
+      "integrity": "sha512-HG5RQLYcAxou3yw+Gnzwan1jJCbOcIBZjwoD/YLWuAd8kkuDI/ZqC0uRhY4ReKOOJaM1Y1kvwebHOwK4P8Sevg=="
+    },
+    "node_modules/rollup": {
+      "version": "4.18.0",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-4.18.0.tgz",
+      "integrity": "sha512-QmJz14PX3rzbJCN1SG4Xe/bAAX2a6NpCP8ab2vfu2GiUr8AQcr2nCV/oEO3yneFarB67zk8ShlIyWb2LGTb3Sg==",
+      "dependencies": {
+        "@types/estree": "1.0.5"
+      },
+      "bin": {
+        "rollup": "dist/bin/rollup"
+      },
+      "engines": {
+        "node": ">=18.0.0",
+        "npm": ">=8.0.0"
+      },
+      "optionalDependencies": {
+        "@rollup/rollup-android-arm-eabi": "4.18.0",
+        "@rollup/rollup-android-arm64": "4.18.0",
+        "@rollup/rollup-darwin-arm64": "4.18.0",
+        "@rollup/rollup-darwin-x64": "4.18.0",
+        "@rollup/rollup-linux-arm-gnueabihf": "4.18.0",
+        "@rollup/rollup-linux-arm-musleabihf": "4.18.0",
+        "@rollup/rollup-linux-arm64-gnu": "4.18.0",
+        "@rollup/rollup-linux-arm64-musl": "4.18.0",
+        "@rollup/rollup-linux-powerpc64le-gnu": "4.18.0",
+        "@rollup/rollup-linux-riscv64-gnu": "4.18.0",
+        "@rollup/rollup-linux-s390x-gnu": "4.18.0",
+        "@rollup/rollup-linux-x64-gnu": "4.18.0",
+        "@rollup/rollup-linux-x64-musl": "4.18.0",
+        "@rollup/rollup-win32-arm64-msvc": "4.18.0",
+        "@rollup/rollup-win32-ia32-msvc": "4.18.0",
+        "@rollup/rollup-win32-x64-msvc": "4.18.0",
+        "fsevents": "~2.3.2"
+      }
+    },
+    "node_modules/semver": {
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+      "resolved": "https://registry.npmjs.org/semver/-/semver-7.6.0.tgz",
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+      "dependencies": {
+        "lru-cache": "^6.0.0"
+      },
+      "bin": {
+        "semver": "bin/semver.js"
+      },
+      "engines": {
+        "node": ">=10"
+      }
+    },
+    "node_modules/source-map": {
+      "version": "0.6.1",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+      "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+      "optional": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/source-map-generator": {
+      "version": "0.8.0",
+      "resolved": "https://registry.npmjs.org/source-map-generator/-/source-map-generator-0.8.0.tgz",
+      "integrity": "sha512-psgxdGMwl5MZM9S3FWee4EgsEaIjahYV5AzGnwUvPhWeITz/j6rKpysQHlQ4USdxvINlb8lKfWGIXwfkrgtqkA==",
+      "engines": {
+        "node": ">= 10"
+      }
+    },
+    "node_modules/source-map-js": {
+      "version": "1.2.0",
+      "resolved": "https://registry.npmjs.org/source-map-js/-/source-map-js-1.2.0.tgz",
+      "integrity": "sha512-itJW8lvSA0TXEphiRoawsCksnlf8SyvmFzIhltqAHluXd88pkCd+cXJVHTDwdCr0IzwptSm035IHQktUu1QUMg==",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
+    "node_modules/vite": {
+      "version": "5.3.2",
+      "resolved": "https://registry.npmjs.org/vite/-/vite-5.3.2.tgz",
+      "integrity": "sha512-6lA7OBHBlXUxiJxbO5aAY2fsHHzDr1q7DvXYnyZycRs2Dz+dXBWuhpWHvmljTRTpQC2uvGmUFFkSHF2vGo90MA==",
+      "dependencies": {
+        "esbuild": "^0.21.3",
+        "postcss": "^8.4.38",
+        "rollup": "^4.13.0"
+      },
+      "bin": {
+        "vite": "bin/vite.js"
+      },
+      "engines": {
+        "node": "^18.0.0 || >=20.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/vitejs/vite?sponsor=1"
+      },
+      "optionalDependencies": {
+        "fsevents": "~2.3.3"
+      },
+      "peerDependencies": {
+        "@types/node": "^18.0.0 || >=20.0.0",
+        "less": "*",
+        "lightningcss": "^1.21.0",
+        "sass": "*",
+        "stylus": "*",
+        "sugarss": "*",
+        "terser": "^5.4.0"
+      },
+      "peerDependenciesMeta": {
+        "@types/node": {
+          "optional": true
+        },
+        "less": {
+          "optional": true
+        },
+        "lightningcss": {
+          "optional": true
+        },
+        "sass": {
+          "optional": true
+        },
+        "stylus": {
+          "optional": true
+        },
+        "sugarss": {
+          "optional": true
+        },
+        "terser": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/yallist": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/yallist/-/yallist-4.0.0.tgz",
+      "integrity": "sha512-3wdGidZyq5PB084XLES5TpOSRA3wjXAlIWMhum2kRcv/41Sn2emQ0dycQW4uZXLejwKvg6EsvbdlVL+FYEct7A=="
+    }
+  }
+}
diff --git a/package.json b/package.json
new file mode 100644
index 0000000..bd482fd
--- /dev/null
+++ b/package.json
@@ -0,0 +1,18 @@
+{
+  "type": "module",
+  "scripts": {
+    "grammar": "npx peggy --format es grammar.pegjs",
+    "dev": "vite --host",
+    "build": "vite build",
+    "preview": "vite preview",
+    "deploy": "rsync -achv dist/* root@static:/var/www/x.nas.sr/mex --delete"
+  },
+  "dependencies": {
+    "@fontsource/ibm-plex-mono": "^5.0.13",
+    "escodegen": "^2.1.0",
+    "git-describe": "^4.1.1",
+    "peggy": "^4.0.3",
+    "reset.css": "^2.0.2",
+    "vite": "^5.3.2"
+  }
+}
diff --git a/style.css b/style.css
new file mode 100644
index 0000000..f43739a
--- /dev/null
+++ b/style.css
@@ -0,0 +1,41 @@
+textarea,
+pre {
+    font-family: 'IBM Plex Mono', monospace;
+}
+
+textarea {
+    width: 50%;
+    /* border: none; */
+    margin: 1em;
+    padding: 1em;
+    font-size: 12pt;
+}
+
+pre {
+    width: 50%;
+    box-sizing: border-box;
+    margin: 1em;
+    padding: 1em;
+    background-color: #eee;
+    font-size: 12pt;
+    overflow-x: auto;
+}
+
+main {
+    display: flex;
+    flex-direction: column;
+}
+
+section {
+    display: flex;
+}
+
+nav {
+    display: flex;
+    margin: 1em;
+    gap: 1em;
+}
+
+nav button {
+    font-size: 12pt;
+}
\ No newline at end of file
diff --git a/vite.config.js b/vite.config.js
new file mode 100644
index 0000000..6f941ef
--- /dev/null
+++ b/vite.config.js
@@ -0,0 +1,14 @@
+import git from 'git-describe'
+
+const versionInfo = `${git.gitDescribeSync().raw} ${new Date().toISOString()}`
+
+export default {
+    base: "./",
+    define: {
+        VERSION_INFO: `"${versionInfo}"`,
+    },
+    build: {
+        target: 'esnext',
+        minify: false
+    }
+}
\ No newline at end of file
-- 
2.45.2