module.exports = (function() {
/*
* Generated by PEG.js 0.8.0.
*
* http://pegjs.org/
*/
function peg$subclass(child, parent) {
function ctor() { this.constructor = child; }
ctor.prototype = parent.prototype;
child.prototype = new ctor();
}
function peg$SyntaxError(message, expected, found, location) {
this.message = message;
this.expected = expected;
this.found = found;
this.location = location;
this.name = "SyntaxError";
}
peg$subclass(peg$SyntaxError, Error);
var exports = {
SyntaxError: peg$SyntaxError,
};
function peg$parse(input) {
var options = arguments.length > 1 ? arguments[1] : {},
parser = this,
peg$FAILED = {},
peg$startRuleFunctions = { Expression: peg$parseExpression },
peg$startRuleFunction = peg$parseExpression,
peg$c0 = "+",
peg$c1 = { type: "literal", value: "+", description: "\"+\"" },
peg$c2 = "-",
peg$c3 = { type: "literal", value: "-", description: "\"-\"" },
peg$c4 = function(first, rest) {
return combine(first, rest, {
"+": function(left, right) { return left + right; },
"-": function(left, right) { return left - right; }
});
},
peg$c5 = "*",
peg$c6 = { type: "literal", value: "*", description: "\"*\"" },
peg$c7 = "/",
peg$c8 = { type: "literal", value: "/", description: "\"/\"" },
peg$c9 = function(first, rest) {
return combine(first, rest, {
"*": function(left, right) { return left * right; },
"/": function(left, right) { return left / right; }
});
},
peg$c10 = "(",
peg$c11 = { type: "literal", value: "(", description: "\"(\"" },
peg$c12 = ")",
peg$c13 = { type: "literal", value: ")", description: "\")\"" },
peg$c14 = function(expr) { return expr; },
peg$c15 = { type: "other", description: "integer" },
peg$c16 = /^[0-9]/,
peg$c17 = { type: "class", value: "[0-9]", description: "[0-9]" },
peg$c18 = function() { return parseInt(text(), 10); },
peg$c19 = { type: "other", description: "whitespace" },
peg$c20 = /^[ \t\n\r]/,
peg$c21 = { type: "class", value: "[ \\t\\n\\r]", description: "[ \\t\\n\\r]" },
peg$currPos = 0,
peg$savedPos = 0,
peg$silentFails = 0,
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];
}
// common-helpers.js
var peg$posDetailsCache = [{ line: 1, column: 1, seenCR: false }],
peg$maxFailPos = 0,
peg$maxFailExpected = [];
function peg$computePosDetails(pos) {
var details = peg$posDetailsCache[pos],
p, ch;
if (details) {
return details;
} else {
p = pos - 1;
while (!peg$posDetailsCache[p]) {
p--;
}
details = peg$posDetailsCache[p];
details = {
line: details.line,
column: details.column,
seenCR: details.seenCR
};
while (p < pos) {
ch = input.charAt(p);
if (ch === "\n") {
if (!details.seenCR) { details.line++; }
details.column = 1;
details.seenCR = false;
} else if (ch === "\r" || ch === "\u2028" || ch === "\u2029") {
details.line++;
details.column = 1;
details.seenCR = true;
} else {
details.column++;
details.seenCR = false;
}
p++;
}
peg$posDetailsCache[pos] = details;
return details;
}
}
function peg$computeLocation(startPos, endPos) {
var startPosDetails = peg$computePosDetails(startPos),
endPosDetails = peg$computePosDetails(endPos);
return {
start: {
offset: startPos,
line: startPosDetails.line,
column: startPosDetails.column
},
end: {
offset: endPos,
line: endPosDetails.line,
column: endPosDetails.column
}
};
}
function peg$failAtPosition(pos, expected) {
if (pos < peg$maxFailPos) { return; }
if (pos > peg$maxFailPos) {
peg$maxFailPos = pos;
peg$maxFailExpected = [];
}
peg$maxFailExpected.push(expected);
}
function peg$buildException(message, expected, found, location) {
function cleanupExpected(expected) {
expected.sort(function(a, b) {
if (a.description < b.description) {
return -1;
} else if (a.description > b.description) {
return 1;
} else {
return 0;
}
});
peg$removeExpectedDuplicates(expected);
}
function buildMessage(expected, found) {
function stringEscape(s) {
function hex(ch) { return ch.charCodeAt(0).toString(16).toUpperCase(); }
/*
* ECMA-262, 5th ed., 7.8.4: All characters may appear literally in a string
* literal except for the closing quote character, backslash, carriage
* return, line separator, paragraph separator, and line feed. Any character
* may appear in the form of an escape sequence.
*
* For portability, we also escape all control and non-ASCII characters.
* Note that "\0" and "\v" escape sequences are not used because JSHint does
* not like the first and IE the second.
*/
return s
.replace(/\\/g, '\\\\') // backslash
.replace(/"/g, '\\"') // closing double quote
.replace(/\x08/g, '\\b') // backspace
.replace(/\t/g, '\\t') // horizontal tab
.replace(/\n/g, '\\n') // line feed
.replace(/\f/g, '\\f') // form feed
.replace(/\r/g, '\\r') // carriage return
.replace(/[\x00-\x07\x0B\x0E\x0F]/g, function(ch) { return '\\x0' + hex(ch); })
.replace(/[\x10-\x1F\x80-\xFF]/g, function(ch) { return '\\x' + hex(ch); })
.replace(/[\u0100-\u0FFF]/g, function(ch) { return '\\u0' + hex(ch); })
.replace(/[\u1000-\uFFFF]/g, function(ch) { return '\\u' + hex(ch); });
}
var expectedDescs = new Array(expected.length),
expectedDesc, foundDesc, i;
for (i = 0; i < expected.length; i++) {
expectedDescs[i] = expected[i].description;
}
expectedDesc = expected.length > 1
? expectedDescs.slice(0, -1).join(", ")
+ " or "
+ expectedDescs[expected.length - 1]
: expectedDescs[0];
foundDesc = found ? "\"" + stringEscape(found) + "\"" : "end of input";
return "Expected " + expectedDesc + " but " + foundDesc + " found.";
}
if (expected !== null) {
cleanupExpected(expected);
}
return new peg$SyntaxError(
message !== null ? message : buildMessage(expected, found),
expected,
found,
location
);
}
// stackvm-helpers.js
function text() {
return input.substring(peg$savedPos, peg$currPos);
}
function location() {
return peg$computeLocation(peg$savedPos, peg$currPos);
}
function expected(description) {
throw peg$buildException(
null,
[{ type: "other", description: description }],
input.substring(peg$savedPos, peg$currPos),
peg$computeLocation(peg$savedPos, peg$currPos)
);
}
function error(message) {
throw peg$buildException(
message,
null,
input.substring(peg$savedPos, peg$currPos),
peg$computeLocation(peg$savedPos, peg$currPos)
);
}
function peg$fail(expected) {
return peg$failAtPosition(peg$currPos, expected);
}
function peg$removeExpectedDuplicates(expected) {
var i = 1;
/*
* This works because the bytecode generator guarantees that every
* expectation object exists only once, so it's enough to use |===| instead
* of deeper structural comparison.
*/
while (i < expected.length) {
if (expected[i - 1] === expected[i]) {
expected.splice(i, 1);
} else {
i++;
}
}
}
function peg$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$parse_();
if (s4 !== peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 43) {
s5 = peg$c0;
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c1); }
}
if (s5 === peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 45) {
s5 = peg$c2;
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c3); }
}
}
if (s5 !== peg$FAILED) {
s6 = peg$parse_();
if (s6 !== peg$FAILED) {
s7 = peg$parseTerm();
if (s7 !== peg$FAILED) {
s4 = [s4, s5, s6, s7];
s3 = s4;
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
} 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$parse_();
if (s4 !== peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 43) {
s5 = peg$c0;
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c1); }
}
if (s5 === peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 45) {
s5 = peg$c2;
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c3); }
}
}
if (s5 !== peg$FAILED) {
s6 = peg$parse_();
if (s6 !== peg$FAILED) {
s7 = peg$parseTerm();
if (s7 !== peg$FAILED) {
s4 = [s4, s5, s6, s7];
s3 = s4;
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
}
if (s2 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c4(s1, s2);
s0 = s1;
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
return s0;
}
function peg$parseTerm() {
var s0, s1, s2, s3, s4, s5, s6, s7;
s0 = peg$currPos;
s1 = peg$parseFactor();
if (s1 !== peg$FAILED) {
s2 = [];
s3 = peg$currPos;
s4 = peg$parse_();
if (s4 !== peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 42) {
s5 = peg$c5;
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c6); }
}
if (s5 === peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 47) {
s5 = peg$c7;
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c8); }
}
}
if (s5 !== peg$FAILED) {
s6 = peg$parse_();
if (s6 !== peg$FAILED) {
s7 = peg$parseFactor();
if (s7 !== peg$FAILED) {
s4 = [s4, s5, s6, s7];
s3 = s4;
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
} 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$parse_();
if (s4 !== peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 42) {
s5 = peg$c5;
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c6); }
}
if (s5 === peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 47) {
s5 = peg$c7;
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c8); }
}
}
if (s5 !== peg$FAILED) {
s6 = peg$parse_();
if (s6 !== peg$FAILED) {
s7 = peg$parseFactor();
if (s7 !== peg$FAILED) {
s4 = [s4, s5, s6, s7];
s3 = s4;
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
} else {
peg$currPos = s3;
s3 = peg$FAILED;
}
}
if (s2 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c9(s1, s2);
s0 = s1;
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
return s0;
}
function peg$parseFactor() {
var s0, s1, s2, s3, s4, s5;
s0 = peg$currPos;
if (input.charCodeAt(peg$currPos) === 40) {
s1 = peg$c10;
peg$currPos++;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c11); }
}
if (s1 !== peg$FAILED) {
s2 = peg$parse_();
if (s2 !== peg$FAILED) {
s3 = peg$parseExpression();
if (s3 !== peg$FAILED) {
s4 = peg$parse_();
if (s4 !== peg$FAILED) {
if (input.charCodeAt(peg$currPos) === 41) {
s5 = peg$c12;
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c13); }
}
if (s5 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c14(s3);
s0 = s1;
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
if (s0 === peg$FAILED) {
s0 = peg$parseInteger();
}
return s0;
}
function peg$parseInteger() {
var s0, s1, s2;
peg$silentFails++;
s0 = peg$currPos;
s1 = [];
if (peg$c16.test(input.charAt(peg$currPos))) {
s2 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s2 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c17); }
}
if (s2 !== peg$FAILED) {
while (s2 !== peg$FAILED) {
s1.push(s2);
if (peg$c16.test(input.charAt(peg$currPos))) {
s2 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s2 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c17); }
}
}
} else {
s1 = peg$FAILED;
}
if (s1 !== peg$FAILED) {
peg$savedPos = s0;
s1 = peg$c18();
}
s0 = s1;
peg$silentFails--;
if (s0 === peg$FAILED) {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c15); }
}
return s0;
}
function peg$parse_() {
var s0, s1;
peg$silentFails++;
s0 = [];
if (peg$c20.test(input.charAt(peg$currPos))) {
s1 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c21); }
}
while (s1 !== peg$FAILED) {
s0.push(s1);
if (peg$c20.test(input.charAt(peg$currPos))) {
s1 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c21); }
}
}
peg$silentFails--;
if (s0 === peg$FAILED) {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$c19); }
}
return s0;
}
{
function combine(first, rest, combiners) {
var result = first, i;
for (i = 0; i < rest.length; i++) {
result = combiners[rest[i][1]](result, rest[i][3]);
}
return result;
}
}
peg$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$fail({ type: "end", description: "end of input" });
}
throw peg$buildException(
null,
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)
);
}
}
exports.parse = peg$parse;
return exports;
})();
;