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@frostburn
Last active December 3, 2023 09:30
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Scale Workshop 2 grammar with error generating examples
// Generated by Peggy 3.0.2.
//
// https://peggyjs.org/
"use strict";
function PlainLiteral(value) {
return {
type: 'PlainLiteral',
value
}
}
function CentsLiteral(whole, fractional) {
return {
type: 'CentsLiteral',
whole,
fractional
}
}
function NumericLiteral(whole, fractional) {
return {
type: 'NumericLiteral',
whole,
fractional
}
}
function FractionLiteral(numerator, denominator) {
return {
type: 'FractionLiteral',
numerator,
denominator
}
}
function EdjiFraction(numerator, denominator, equave) {
return {
type: 'EdjiFraction',
numerator,
denominator,
equave
}
}
function Monzo(components) {
return {
type: 'Monzo',
components
}
}
function BinaryExpression(operator, left, right) {
return {
type: 'BinaryExpression',
operator,
left,
right
}
}
function UnaryExpression(operator, operand) {
return {
type: 'UnaryExpression',
operator,
operand
}
}
function operatorReducer (result, element) {
const left = result;
const [op, right] = element;
return BinaryExpression(op, left, right);
}
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, translations) {
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$SyntaxError.prototype);
}
self.expected = expected;
self.found = found;
self.location = location;
self.translations = translations;
self.name = "SyntaxError";
return self;
}
peg$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$SyntaxError.prototype.format = function(sources) {
var translations = this.translations;
var str = translations["syntax.error"] + ": " + this.message;
if (this.location) {
var src = null;
var k;
for (k = 0; k < sources.length; k++) {
if (sources[k].source === this.location.source) {
src = sources[k].text.split(/\r\n|\n|\r/g);
break;
}
}
var s = this.location.start;
var offset_s = (this.location.source && (typeof this.location.source.offset === "function"))
? this.location.source.offset(s)
: s;
var loc = this.location.source + ":" + offset_s.line + ":" + offset_s.column;
if (src) {
var e = this.location.end;
var filler = peg$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 " + translations["syntax.at"] + " " + loc;
}
}
return str;
};
peg$SyntaxError.buildMessage = function(expected, found, translations) {
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 translations["syntax.any"];
},
end: function() {
return translations["syntax.end"];
},
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] + " " + translations["syntax.or"] + " " + descriptions[1];
default:
return descriptions.slice(0, -1).join(", ")
+ ", " + translations["syntax.or"] + " "
+ descriptions[descriptions.length - 1];
}
}
function describeFound(found) {
return found ? "\"" + literalEscape(found) + "\"" : translations["syntax.end"];
}
return translations["syntax.expected"] + " " + describeExpected(expected) + " " + translations["syntax.but"] + " " + describeFound(found) + " " + translations["syntax.found"] + ".";
};
function peg$parse(input, options) {
options = options !== undefined ? options : {};
var peg$translations = {
// Standard English translations
"syntax.error": "Error",
"syntax.at": "at",
"syntax.any": "any character",
"syntax.end": "end of input",
"syntax.or": "or",
"syntax.expected": "expected",
"syntax.but": "but",
"syntax.found": "found",
// Auto-generated translations for display names
"display.name.whitespace": "whitespace",
...(options.translations ?? {})};
var peg$FAILED = {};
var peg$source = options.grammarSource;
var peg$startRuleFunctions = { Start: peg$parseStart };
var peg$startRuleFunction = peg$parseStart;
var peg$c0 = "\t";
var peg$c1 = "\v";
var peg$c2 = "\f";
var peg$c3 = " ";
var peg$c4 = "\xA0";
var peg$c5 = "\uFEFF";
var peg$c6 = "+";
var peg$c7 = "-";
var peg$c8 = ".";
var peg$c9 = ",";
var peg$c10 = "/";
var peg$c11 = "<";
var peg$c12 = ">";
var peg$c13 = "\\";
var peg$c14 = "[";
var peg$r0 = /^[ \xA0\u1680\u2000-\u200A\u202F\u205F\u3000]/;
var peg$r1 = /^[\n\r\u2028\u2029]/;
var peg$r2 = /^[0-9]/;
var peg$r3 = /^[+\-]/;
var peg$e0 = peg$anyExpectation();
var peg$e1 = peg$otherExpectation(peg$translations["display.name.whitespace"]);
var peg$e2 = peg$literalExpectation("\t", false);
var peg$e3 = peg$literalExpectation("\v", false);
var peg$e4 = peg$literalExpectation("\f", false);
var peg$e5 = peg$literalExpectation(" ", false);
var peg$e6 = peg$literalExpectation("\xA0", false);
var peg$e7 = peg$literalExpectation("\uFEFF", false);
var peg$e8 = peg$classExpectation([" ", "\xA0", "\u1680", ["\u2000", "\u200A"], "\u202F", "\u205F", "\u3000"], false, false);
var peg$e9 = peg$classExpectation(["\n", "\r", "\u2028", "\u2029"], false, false);
var peg$e10 = peg$literalExpectation("+", false);
var peg$e11 = peg$literalExpectation("-", false);
var peg$e12 = peg$classExpectation([["0", "9"]], false, false);
var peg$e13 = peg$literalExpectation(".", false);
var peg$e14 = peg$literalExpectation(",", false);
var peg$e15 = peg$literalExpectation("/", false);
var peg$e16 = peg$literalExpectation("<", false);
var peg$e17 = peg$literalExpectation(">", false);
var peg$e18 = peg$literalExpectation("\\", false);
var peg$e19 = peg$classExpectation(["+", "-"], false, false);
var peg$e20 = peg$literalExpectation("[", false);
var peg$f0 = function(head, tail) {
return tail.reduce(operatorReducer, head);
};
var peg$f1 = function(num) { return parseInt(num, 10) };
var peg$f2 = function(sign, value) { return sign ? -value : value };
var peg$f3 = function(whole, fractional) { return CentsLiteral(whole, fractional) };
var peg$f4 = function(whole, fractional) { return NumericLiteral(whole, fractional) };
var peg$f5 = function(numerator, denominator) { return FractionLiteral(numerator, denominator) };
var peg$f6 = function(value) { return PlainLiteral(value) };
var peg$f7 = function(numerator, denominator, equave) { return EdjiFraction(numerator, denominator, equave) };
var peg$f8 = function(components) { return Monzo(components) };
var peg$f9 = function(operator, operand) { return UnaryExpression(operator, operand) };
var peg$currPos = 0;
var peg$savedPos = 0;
var peg$posDetailsCache = [{ line: 1, column: 1 }];
var peg$maxFailPos = 0;
var peg$maxFailExpected = [];
var peg$silentFails = 0;
var peg$result;
if ("startRule" in options) {
if (!(options.startRule in peg$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$posDetailsCache[pos];
var p;
if (details) {
return details;
} else {
p = pos - 1;
while (!peg$posDetailsCache[p]) {
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$SyntaxError(message, null, null, location, peg$translations);
}
function peg$buildStructuredError(expected, found, location) {
return new peg$SyntaxError(
peg$SyntaxError.buildMessage(expected, found, peg$translations),
expected,
found,
location,
peg$translations
);
}
function peg$parseStart() {
var s0;
s0 = peg$parseExpression();
return s0;
}
function peg$parseSourceCharacter() {
var s0;
if (input.length > peg$currPos) {
s0 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s0 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e0); }
}
return s0;
}
function peg$parseWhitespace() {
var s0, s1;
peg$silentFails++;
if (input.charCodeAt(peg$currPos) === 9) {
s0 = peg$c0;
peg$currPos++;
} else {
s0 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e2); }
}
if (s0 === peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 11) {
s0 = peg$c1;
peg$currPos++;
} else {
s0 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e3); }
}
if (s0 === peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 12) {
s0 = peg$c2;
peg$currPos++;
} else {
s0 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e4); }
}
if (s0 === peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 32) {
s0 = peg$c3;
peg$currPos++;
} else {
s0 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e5); }
}
if (s0 === peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 160) {
s0 = peg$c4;
peg$currPos++;
} else {
s0 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e6); }
}
if (s0 === peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 65279) {
s0 = peg$c5;
peg$currPos++;
} else {
s0 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e7); }
}
if (s0 === peg$FAILED) {
s0 = peg$parseZs();
if (s0 === peg$FAILED) {
s0 = peg$parseLineTerminator();
}
}
}
}
}
}
}
peg$silentFails--;
if (s0 === peg$FAILED) {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e1); }
}
return s0;
}
function peg$parseZs() {
var s0;
if (peg$r0.test(input.charAt(peg$currPos))) {
s0 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s0 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e8); }
}
return s0;
}
function peg$parseLineTerminator() {
var s0;
if (peg$r1.test(input.charAt(peg$currPos))) {
s0 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s0 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e9); }
}
return s0;
}
function peg$parse_() {
var s0, s1;
s0 = [];
s1 = peg$parseWhitespace();
while (s1 !== peg$FAILED) {
s0.push(s1);
s1 = peg$parseWhitespace();
}
return s0;
}
function peg$parseExpression() {
var s0, s1, s2, s3, s4, s5, s6, s7;
s0 = peg$currPos;
s1 = peg$parseTerm();
if (s1 !== peg$FAILED) {
s2 = [];
s3 = peg$currPos;
s4 = peg$parse_();
if (input.charCodeAt(peg$currPos) === 43) {
s5 = peg$c6;
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e10); }
}
if (s5 === peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 45) {
s5 = peg$c7;
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e11); }
}
}
if (s5 !== peg$FAILED) {
s6 = peg$parse_();
s7 = peg$parseTerm();
if (s7 !== peg$FAILED) {
s3 = [ s5, s7 ];
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
while (s3 !== peg$FAILED) {
s2.push(s3);
s3 = peg$currPos;
s4 = peg$parse_();
if (input.charCodeAt(peg$currPos) === 43) {
s5 = peg$c6;
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e10); }
}
if (s5 === peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 45) {
s5 = peg$c7;
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e11); }
}
}
if (s5 !== peg$FAILED) {
s6 = peg$parse_();
s7 = peg$parseTerm();
if (s7 !== peg$FAILED) {
s3 = [ s5, s7 ];
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
}
peg$savedPos = s0;
s0 = peg$f0(s1, s2);
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
return s0;
}
function peg$parseTerm() {
var s0, s1, s2, s3;
s0 = peg$currPos;
s1 = peg$parse_();
s2 = peg$parseUnaryExpression();
if (s2 === peg$FAILED) {
s2 = peg$parsePrimary();
}
if (s2 !== peg$FAILED) {
s3 = peg$parse_();
s0 = s2;
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
return s0;
}
function peg$parsePrimary() {
var s0;
s0 = peg$parseDotDecimal();
if (s0 === peg$FAILED) {
s0 = peg$parseCommaDecimal();
if (s0 === peg$FAILED) {
s0 = peg$parseSlashFraction();
if (s0 === peg$FAILED) {
s0 = peg$parseBackslashFraction();
if (s0 === peg$FAILED) {
s0 = peg$parseMonzo();
if (s0 === peg$FAILED) {
s0 = peg$parsePlainNumber();
}
}
}
}
}
return s0;
}
function peg$parseInteger() {
var s0, s1, s2, s3;
s0 = peg$currPos;
s1 = peg$currPos;
s2 = [];
if (peg$r2.test(input.charAt(peg$currPos))) {
s3 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s3 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e12); }
}
if (s3 !== peg$FAILED) {
while (s3 !== peg$FAILED) {
s2.push(s3);
if (peg$r2.test(input.charAt(peg$currPos))) {
s3 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s3 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e12); }
}
}
} else {
s2 = peg$FAILED;
}
if (s2 !== peg$FAILED) {
s1 = input.substring(s1, peg$currPos);
} else {
s1 = s2;
}
if (s1 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$f1(s1);
}
s0 = s1;
return s0;
}
function peg$parseSignedInteger() {
var s0, s1, s2;
s0 = peg$currPos;
if (input.charCodeAt(peg$currPos) === 45) {
s1 = peg$c7;
peg$currPos++;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e11); }
}
if (s1 === peg$FAILED) {
s1 = null;
}
s2 = peg$parseInteger();
if (s2 !== peg$FAILED) {
peg$savedPos = s0;
s0 = peg$f2(s1, s2);
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
return s0;
}
function peg$parseDotDecimal() {
var s0, s1, s2, s3, s4, s5;
s0 = peg$currPos;
s1 = peg$parseInteger();
if (s1 === peg$FAILED) {
s1 = null;
}
if (input.charCodeAt(peg$currPos) === 46) {
s2 = peg$c8;
peg$currPos++;
} else {
s2 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e13); }
}
if (s2 !== peg$FAILED) {
s3 = peg$currPos;
s4 = [];
if (peg$r2.test(input.charAt(peg$currPos))) {
s5 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e12); }
}
while (s5 !== peg$FAILED) {
s4.push(s5);
if (peg$r2.test(input.charAt(peg$currPos))) {
s5 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e12); }
}
}
s3 = input.substring(s3, peg$currPos);
peg$savedPos = s0;
s0 = peg$f3(s1, s3);
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
return s0;
}
function peg$parseCommaDecimal() {
var s0, s1, s2, s3, s4, s5;
s0 = peg$currPos;
s1 = peg$parseInteger();
if (s1 === peg$FAILED) {
s1 = null;
}
if (input.charCodeAt(peg$currPos) === 44) {
s2 = peg$c9;
peg$currPos++;
} else {
s2 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e14); }
}
if (s2 !== peg$FAILED) {
s3 = peg$currPos;
s4 = [];
if (peg$r2.test(input.charAt(peg$currPos))) {
s5 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e12); }
}
while (s5 !== peg$FAILED) {
s4.push(s5);
if (peg$r2.test(input.charAt(peg$currPos))) {
s5 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e12); }
}
}
s3 = input.substring(s3, peg$currPos);
peg$savedPos = s0;
s0 = peg$f4(s1, s3);
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
return s0;
}
function peg$parseSlashFraction() {
var s0, s1, s2, s3;
s0 = peg$currPos;
s1 = peg$parseInteger();
if (s1 !== peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 47) {
s2 = peg$c10;
peg$currPos++;
} else {
s2 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e15); }
}
if (s2 !== peg$FAILED) {
s3 = peg$parseInteger();
if (s3 !== peg$FAILED) {
peg$savedPos = s0;
s0 = peg$f5(s1, 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$parsePlainNumber() {
var s0, s1;
s0 = peg$currPos;
s1 = peg$parseInteger();
if (s1 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$f6(s1);
}
s0 = s1;
return s0;
}
function peg$parseEquaveExpression() {
var s0, s1, s2, s3, s4, s5;
s0 = peg$currPos;
if (input.charCodeAt(peg$currPos) === 60) {
s1 = peg$c11;
peg$currPos++;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e16); }
}
if (s1 !== peg$FAILED) {
s2 = peg$parse_();
s3 = peg$parseSlashFraction();
if (s3 === peg$FAILED) {
s3 = peg$parsePlainNumber();
}
if (s3 !== peg$FAILED) {
s4 = peg$parse_();
if (input.charCodeAt(peg$currPos) === 62) {
s5 = peg$c12;
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e17); }
}
if (s5 !== peg$FAILED) {
s0 = 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$parseBackslashFraction() {
var s0, s1, s2, s3, s4;
s0 = peg$currPos;
s1 = peg$parseInteger();
if (s1 !== peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 92) {
s2 = peg$c13;
peg$currPos++;
} else {
s2 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e18); }
}
if (s2 !== peg$FAILED) {
s3 = peg$parseSignedInteger();
if (s3 !== peg$FAILED) {
s4 = peg$parseEquaveExpression();
if (s4 === peg$FAILED) {
s4 = null;
}
peg$savedPos = s0;
s0 = peg$f7(s1, s3, s4);
} 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$parseComponent() {
var s0, s1, s2, s3;
s0 = peg$currPos;
s1 = peg$currPos;
if (peg$r3.test(input.charAt(peg$currPos))) {
s2 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s2 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e19); }
}
if (s2 === peg$FAILED) {
s2 = null;
}
s3 = peg$parseSlashFraction();
if (s3 === peg$FAILED) {
s3 = peg$parsePlainNumber();
}
if (s3 !== peg$FAILED) {
s2 = [s2, s3];
s1 = s2;
} else {
peg$currPos = s1;
s1 = peg$FAILED;
}
if (s1 !== peg$FAILED) {
s0 = input.substring(s0, peg$currPos);
} else {
s0 = s1;
}
return s0;
}
function peg$parseMonzo() {
var s0, s1, s2, s3, s4, s5, s6, s7;
s0 = peg$currPos;
if (input.charCodeAt(peg$currPos) === 91) {
s1 = peg$c14;
peg$currPos++;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e20); }
}
if (s1 !== peg$FAILED) {
s2 = [];
s3 = peg$parseComponent();
while (s3 !== peg$FAILED) {
s2.push(s3);
s3 = peg$currPos;
s4 = peg$currPos;
s5 = peg$parse_();
if (input.charCodeAt(peg$currPos) === 44) {
s6 = peg$c9;
peg$currPos++;
} else {
s6 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e14); }
}
if (s6 === peg$FAILED) {
s6 = null;
}
s7 = peg$parse_();
s5 = [s5, s6, s7];
s4 = s5;
s4 = peg$parseComponent();
if (s4 === peg$FAILED) {
peg$currPos = s3;
s3 = peg$FAILED;
} else {
s3 = s4;
}
}
if (input.charCodeAt(peg$currPos) === 62) {
s3 = peg$c12;
peg$currPos++;
} else {
s3 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e17); }
}
if (s3 !== peg$FAILED) {
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$parseUnaryExpression() {
var s0, s1, s2;
s0 = peg$currPos;
if (input.charCodeAt(peg$currPos) === 45) {
s1 = peg$c7;
peg$currPos++;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e11); }
}
if (s1 !== peg$FAILED) {
s2 = peg$parsePrimary();
if (s2 !== peg$FAILED) {
peg$savedPos = s0;
s0 = peg$f9(s1, s2);
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
return s0;
}
peg$result = peg$startRuleFunction();
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)
);
}
}
module.exports = {
SyntaxError: peg$SyntaxError,
parse: peg$parse
};
// Manually added error-generating calls:
const translations = {
'display.name.whitespace': 'välilyönti',
'syntax.error': 'Virhe',
'syntax.at': 'sijainnissa',
'syntax.or': 'tai',
'syntax.any': 'mitä tahansa kirjainta',
'syntax.end': 'syötteen loppu',
'syntax.expected': 'Odotettiin',
'syntax.but': 'mutta',
'syntax.found': 'löytyi',
}
const p = (input) => peg$parse(input, {grammarSource: '(Skaalatietue)', translations});
try {
p('');
} catch (e) {
console.log(e.format({text: ''}));
}
try {
p('5\\7<3/asdf>');
} catch (e) {
console.log(e.format({text: '3/asdf'}));
}
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