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screamer-lang.js
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// @generated by Peggy 4.0.2.
//
// https://peggyjs.org/
(function(root) {
"use strict";
function peg$subclass(child, parent) {
function C() { this.constructor = child; }
C.prototype = parent.prototype;
child.prototype = new C();
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function peg$SyntaxError(message, expected, found, location) {
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// istanbul ignore next Check is a necessary evil to support older environments
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peg$subclass(peg$SyntaxError, Error);
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peg$SyntaxError.buildMessage = function(expected, found) {
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var peg$e100 = peg$literalExpectation("torus88", false);
var peg$e101 = peg$literalExpectation("torus82", false);
var peg$e102 = peg$literalExpectation("triangle", false);
var peg$e103 = peg$literalExpectation("blackhole", false);
var peg$e104 = peg$literalExpectation("white glow", false);
var peg$e105 = peg$literalExpectation("redp", false);
var peg$e106 = peg$literalExpectation("red", false);
var peg$e107 = peg$literalExpectation("green", false);
var peg$e108 = peg$literalExpectation("blue", false);
var peg$e109 = peg$literalExpectation("cyan", false);
var peg$e110 = peg$literalExpectation("magenta", false);
var peg$e111 = peg$literalExpectation("yellow", false);
var peg$e112 = peg$literalExpectation("white", false);
var peg$e113 = peg$literalExpectation("black", false);
var peg$e114 = peg$literalExpectation("grey", false);
var peg$e115 = peg$literalExpectation("glue", false);
var peg$e116 = peg$literalExpectation("inverse", false);
var peg$e117 = peg$literalExpectation("normal", false);
var peg$e118 = peg$literalExpectation("rainbow", false);
var peg$e119 = peg$literalExpectation("stripes", false);
var peg$e120 = peg$literalExpectation("dots", false);
var peg$e121 = peg$literalExpectation("zigzag", false);
var peg$e122 = peg$literalExpectation("truchet", false);
var peg$e123 = peg$literalExpectation("noise", false);
var peg$e124 = peg$literalExpectation("checkers", false);
var peg$e125 = peg$literalExpectation("voronoi", false);
var peg$e126 = peg$literalExpectation("cellular", false);
var peg$e127 = peg$literalExpectation("hydra", false);
var peg$e128 = peg$literalExpectation("feedback", false);
var peg$e129 = peg$literalExpectation("antialias", false);
var peg$e130 = peg$literalExpectation("bloom", false);
var peg$e131 = peg$literalExpectation("focus", false);
var peg$e132 = peg$literalExpectation("godrays", false);
var peg$e133 = peg$literalExpectation("edge", false);
var peg$e134 = peg$literalExpectation("invert", false);
var peg$e135 = peg$literalExpectation("motionblur", false);
var peg$e136 = peg$literalExpectation("blur", false);
var peg$e137 = peg$literalExpectation("hue", false);
var peg$e138 = peg$literalExpectation("brightness", false);
var peg$e139 = peg$literalExpectation("contrast", false);
var peg$e140 = peg$literalExpectation("glow", false);
var peg$e141 = peg$literalExpectation("light", false);
var peg$e142 = peg$literalExpectation("-", false);
var peg$e143 = peg$classExpectation([["0", "9"]], false, false);
var peg$e144 = peg$literalExpectation(".", false);
var peg$e145 = peg$classExpectation([["a", "z"], ["A", "Z"], "."], false, false);
var peg$e146 = peg$otherExpectation("line breaks");
var peg$e147 = peg$classExpectation(["\n", "\r"], false, false);
var peg$e148 = peg$otherExpectation("whitespace");
var peg$e149 = peg$classExpectation([" ", "\t"], false, false);
var peg$f0 = function(body) {
//console.log( body )
return body
};
var peg$f1 = function(body) {
return ['hydra', body]
};
var peg$f2 = function() { return ['comment'] };
var peg$f3 = function(name, value) {
return ['config', name, value ]
};
var peg$f4 = function(fx) {
return fx.map( f => [ f[0], f[1] === null ? null : f[1][1] ] )
};
var peg$f5 = function(values, b) {
if( b===null ) {
throw SyntaxError('Are you missing a closing parenthesis for your list?')
}
return { name:'list', values }
};
var peg$f6 = function(obj, num, mods, d) {
if( d === null ) throw SyntaxError( 'Did you forget to close your loop?' )
mods = mods.map( v => [ v[0], v[2] ] )
return ['loop', obj, num, mods]
};
var peg$f7 = function(name, statement) {
if( statement === null ) {
throw SyntaxError(`You didn't assign anything to ${name}.`)
}
return [ 'assignment', name, statement ]
};
var peg$f8 = function(a) { return a };
var peg$f9 = function(body) {
return body
};
var peg$f10 = function(body) {
return body
};
var peg$f11 = function(a, args, b) {
if( a===null ) {
throw SyntaxError(`Your union is missing an argument to the left of the ++ operator.`)
}
if( b===null ) {
throw SyntaxError(`Your union is missing an argument to the right of the ++ operator.`)
}
return ['combinator', 'Union', a,b,args ]
};
var peg$f12 = function(a, args, b) {
if( a===null ) {
throw SyntaxError(`Your round union is missing an argument to the left of the ++ operator.`)
}
if( b===null ) {
throw SyntaxError(`Your round union is missing an argument to the right of the +++ operator.`)
}
return ['combinator', 'RoundUnion', a,b,args ]
};
var peg$f13 = function(a, args, b) {
if( a===null ) {
throw SyntaxError(`Your stairs union is missing an argument to the left of the ++ operator.`)
}
if( b===null ) {
throw SyntaxError(`Your stairs union is missing an argument to the right of the ++++ operator.`)
}
return ['combinator', 'StairsUnion', a,b,args ]
};
var peg$f14 = function(a, args, b) {
if( a===null ) {
throw SyntaxError(`Your difference is missing an argument to the left of the -- operator.`)
}
if( b===null ) {
throw SyntaxError(`Your difference is missing an argument to the right of the -- operator.`)
}
return ['combinator', 'Difference', a,b, args]
};
var peg$f15 = function(a, args, b) {
if( a===null ) {
throw SyntaxError(`Your round difference is missing an argument to the left of the --- operator.`)
}
if( b===null ) {
throw SyntaxError(`Your round difference is missing an argument to the right of the --- operator.`)
}
return ['combinator', 'RoundDifference', a,b,args ]
};
var peg$f16 = function(a, args, b) {
if( a===null ) {
throw SyntaxError(`Your stairs difference is missing an argument to the left of the ---- operator.`)
}
if( b===null ) {
throw SyntaxError(`Your stairs difference is missing an argument to the right of the ---- operator.`)
}
return ['combinator', 'StairsDifference', a,b,args ]
};
var peg$f17 = function(a, args, b) {
if( a===null ) {
throw SyntaxError(`Your intersection is missing an argument to the left of the ** operator.`)
}
if( b===null ) {
throw SyntaxError(`Your intersection is missing an argument to the right of the ** operator.`)
}
return ['combinator', 'Intersection', a,b,args ]
};
var peg$f18 = function(a, args, b) {
if( a===null ) {
throw SyntaxError(`Your round intersection is missing an argument to the left of the *** operator.`)
}
if( b===null ) {
throw SyntaxError(`Your round intersection is missing an argument to the right of the *** operator.`)
}
return ['combinator', 'RoundIntersection', a,b,args ]
};
var peg$f19 = function(a, args, b) {
if( a===null ) {
throw SyntaxError(`Your stairs intersection is missing an argument to the left of the **** operator.`)
}
if( b===null ) {
throw SyntaxError(`Your stairs intersection is missing an argument to the right of the **** operator.`)
}
return ['combinator', 'StairsIntersection', a,b,args ]
};
var peg$f20 = function(a, b) {
// operations are represented as arrays.
// if b is instead a number, it is the final term
// in a potential sequence of operations
const isFinalTerm = b === null
//if( !isFinalTerm && b[2] === null ) {
// throw SyntaxError(`You're missing a value to the right of your ${b[0]} operator.`)
//}
return isFinalTerm ? a : ['math',b[0], a,b[2] ]
};
var peg$f21 = function(a, b) {
const isBNull = b === null
if( !isBNull ) {
const isFinalTerm = b !== null && b[0] === undefined
return isFinalTerm ? a : ['mod', a, b.map(v=>[v[0],v[2]]) ]
}else{
return a
}
};
var peg$f22 = function(alist) { return alist };
var peg$f23 = function(name, a) {
return ['math', name, a ]
};
var peg$f24 = function(name) { return name };
var peg$f25 = function(name, a) {
return ['math', name, a ]
};
var peg$f26 = function(name, a) {
if( a !== null && a[2] === null ) {
throw SyntaxError(`Are you missing a right parenthesis when creating your ${name}?`)
}
return ['geometry', name[0].toUpperCase() + name.slice(1), a===undefined||a===null ? null : a[1] ]
};
var peg$f27 = function(args) {
return ['color', args ]
};
var peg$f28 = function(name) { return name };
var peg$f29 = function(name) { return name };
var peg$f30 = function(name, args) {
if( args === null ) {
return [ name, args ]
}else{
if( args[1].length === 0 ) {
return [name, null ]
}
return [name, ...(args[1].map( v => v[0] ))]
}
};
var peg$f31 = function(name) { return name };
var peg$f32 = function(name) { return name };
var peg$f33 = function(a) { return ['vec', a] };
var peg$f34 = function(l) {
return l.map( v => v[0] )
};
var peg$f35 = function() { return ')' };
var peg$f36 = function() { return '(' };
var peg$f37 = function() { return +text() };
var peg$f38 = function(num) { return parseInt( num ) };
var peg$f39 = function(letters) { return letters.join('') };
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$SyntaxError.buildMessage(expected, found),
expected,
found,
location
);
}
function peg$parseout() {
var s0, s1;
peg$silentFails++;
s0 = [];
s1 = peg$parsestatement();
if (s1 !== peg$FAILED) {
while (s1 !== peg$FAILED) {
s0.push(s1);
s1 = peg$parsestatement();
}
} else {
s0 = peg$FAILED;
}
peg$silentFails--;
if (s0 === peg$FAILED) {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e0); }
}
return s0;
}
function peg$parsestatement() {
var s0, s1, s2, s3, s4, s5, s6;
s0 = peg$currPos;
s1 = peg$parse_();
s2 = [];
s3 = peg$parse__();
while (s3 !== peg$FAILED) {
s2.push(s3);
s3 = peg$parse__();
}
s3 = peg$parsecomment();
if (s3 === peg$FAILED) {
s3 = peg$parsehydra();
if (s3 === peg$FAILED) {
s3 = peg$parseconfig();
if (s3 === peg$FAILED) {
s3 = peg$parseassignment();
if (s3 === peg$FAILED) {
s3 = peg$parsecolor();
if (s3 === peg$FAILED) {
s3 = peg$parseexpr();
}
}
}
}
}
if (s3 !== peg$FAILED) {
s4 = peg$parse_();
s5 = [];
s6 = peg$parse__();
while (s6 !== peg$FAILED) {
s5.push(s6);
s6 = peg$parse__();
}
peg$savedPos = s0;
s0 = peg$f0(s3);
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
return s0;
}
function peg$parsehydra() {
var s0, s1, s2, s3, s4, s5, s6, s7;
peg$silentFails++;
s0 = peg$currPos;
if (input.substr(peg$currPos, 6) === peg$c0) {
s1 = peg$c0;
peg$currPos += 6;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e2); }
}
if (s1 !== peg$FAILED) {
s2 = peg$parse_();
s3 = peg$currPos;
s4 = [];
s5 = peg$currPos;
s6 = peg$currPos;
peg$silentFails++;
if (input.charCodeAt(peg$currPos) === 96) {
s7 = peg$c1;
peg$currPos++;
} else {
s7 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e3); }
}
peg$silentFails--;
if (s7 === peg$FAILED) {
s6 = undefined;
} else {
peg$currPos = s6;
s6 = peg$FAILED;
}
if (s6 !== peg$FAILED) {
if (input.length > peg$currPos) {
s7 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s7 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e4); }
}
if (s7 !== peg$FAILED) {
s6 = [s6, s7];
s5 = s6;
} else {
peg$currPos = s5;
s5 = peg$FAILED;
}
} else {
peg$currPos = s5;
s5 = peg$FAILED;
}
while (s5 !== peg$FAILED) {
s4.push(s5);
s5 = peg$currPos;
s6 = peg$currPos;
peg$silentFails++;
if (input.charCodeAt(peg$currPos) === 96) {
s7 = peg$c1;
peg$currPos++;
} else {
s7 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e3); }
}
peg$silentFails--;
if (s7 === peg$FAILED) {
s6 = undefined;
} else {
peg$currPos = s6;
s6 = peg$FAILED;
}
if (s6 !== peg$FAILED) {
if (input.length > peg$currPos) {
s7 = input.charAt(peg$currPos);
peg$currPos++;
} else {
s7 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e4); }
}
if (s7 !== peg$FAILED) {
s6 = [s6, s7];
s5 = s6;
} else {
peg$currPos = s5;
s5 = peg$FAILED;
}
} else {
peg$currPos = s5;
s5 = peg$FAILED;
}
}
s3 = input.substring(s3, peg$currPos);
s4 = peg$parse_();
if (input.charCodeAt(peg$currPos) === 96) {
s5 = peg$c1;
peg$currPos++;
} else {
s5 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e3); }
}
if (s5 !== peg$FAILED) {
peg$savedPos = s0;
s0 = peg$f1(s3);
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
} else {
peg$currPos = s0;
s0 = peg$FAILED;
}
peg$silentFails--;
if (s0 === peg$FAILED) {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e1); }
}
return s0;
}
function peg$parsecomment() {
var s0, s1, s2, s3, s4, s5, s6;
s0 = peg$currPos;
if (input.substr(peg$currPos, 2) === peg$c2) {
s1 = peg$c2;
peg$currPos += 2;
} else {
s1 = peg$FAILED;
if (peg$silentFails === 0) { peg$fail(peg$e5); }
}
if (s1 !== peg$FAILED) {
s2 = peg$parse_();