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| "use strict";
var $__9 = $traceurRuntime.initGeneratorFunction(pieces),
$__10 = $traceurRuntime.initGeneratorFunction(candidates);
Object.defineProperties(exports, {
Algebraic: {get: function() {
return Algebraic;
}},
chunker: {get: function() {
return chunker;
}},
parse: {get: function() {
return parse;
}},
stringify: {get: function() {
return stringify;
}},
__esModule: {value: true}
});
var $__0 = require('./brands'),
WHITE = $__0.WHITE,
KING = $__0.KING,
PAWN = $__0.PAWN;
var Point = require('./point').Point;
var $__2 = require('./standard'),
King = $__2.King,
Queen = $__2.Queen,
Rook = $__2.Rook,
Bishop = $__2.Bishop,
Knight = $__2.Knight,
Pawn = $__2.Pawn;
var EnPassantTarget = require('./eptarget').EnPassantTarget;
var $__4 = require('./util'),
squareCoords = $__4.squareCoords,
rankIndex = $__4.rankIndex,
fileIndex = $__4.fileIndex;
var $__5 = require('./error'),
ChessError = $__5.ChessError,
AmbiguityError = $__5.AmbiguityError,
MobilityError = $__5.MobilityError;
var Algebraic = {
parse: parse,
stringify: stringify,
get chunker() {
return chunker;
}
};
var chunker = /([KQRBNP])?([a-h]?[1-8]?)?x?([a-h][1-8])/;
function parse(algStr, position) {
if (algStr === 'O-O' || algStr === 'O-O-O') {
return castlingMove(algStr, position);
}
return normalMove(algStr, position);
}
function stringify(move) {}
function pieces(position, source, target) {
var i,
Brand,
$__6,
$__7,
p;
var $arguments = arguments;
return $traceurRuntime.createGeneratorInstance(function($ctx) {
while (true)
switch ($ctx.state) {
case 0:
i = $arguments[3] !== (void 0) ? $arguments[3] : 'p';
Brand = pieceBrand(i);
$ctx.state = 15;
break;
case 15:
$ctx.state = (Brand === King) ? 1 : 12;
break;
case 1:
$ctx.state = 2;
return getKing(position);
case 2:
$ctx.maybeThrow();
$ctx.state = -2;
break;
case 12:
$__6 = candidates(position, Brand.brand, source, target)[$traceurRuntime.toProperty(Symbol.iterator)]();
$ctx.state = 8;
break;
case 8:
$ctx.state = (!($__7 = $__6.next()).done) ? 9 : -2;
break;
case 9:
p = $__7.value;
$ctx.state = 10;
break;
case 10:
$ctx.state = 6;
return p;
case 6:
$ctx.maybeThrow();
$ctx.state = 8;
break;
default:
return $ctx.end();
}
}, $__9, this);
}
function candidates(position, brand, source, target) {
var $__6,
$__7,
p,
e,
loc;
return $traceurRuntime.createGeneratorInstance(function($ctx) {
while (true)
switch ($ctx.state) {
case 0:
$__6 = position.query({
brand: brand,
color: position.activeColor
})[$traceurRuntime.toProperty(Symbol.iterator)]();
$ctx.state = 29;
break;
case 29:
$ctx.state = (!($__7 = $__6.next()).done) ? 31 : -2;
break;
case 31:
p = $__7.value;
$ctx.state = 32;
break;
case 32:
$ctx.pushTry(22, null);
$ctx.state = 25;
break;
case 25:
throw undefined;
$ctx.state = 27;
break;
case 27:
$ctx.popTry();
$ctx.state = 29;
break;
case 22:
$ctx.popTry();
loc = $ctx.storedException;
$ctx.state = 20;
break;
case 20:
loc = position.pieceCoords(p);
$ctx.state = 21;
break;
case 21:
$ctx.state = (source == null || source.x === loc.x || source.y === loc.y) ? 14 : 29;
break;
case 14:
$ctx.pushTry(12, null);
$ctx.state = 15;
break;
case 15:
position.movePiece(p, target);
$ctx.state = 6;
break;
case 6:
$ctx.state = 2;
return p;
case 2:
$ctx.maybeThrow();
$ctx.state = 4;
break;
case 4:
$ctx.popTry();
$ctx.state = 29;
break;
case 12:
$ctx.popTry();
e = $ctx.storedException;
$ctx.state = 9;
break;
case 9:
$ctx.state = (e instanceof ChessError) ? 29 : 8;
break;
case 8:
throw e;
$ctx.state = 29;
break;
default:
return $ctx.end();
}
}, $__10, this);
}
function pieceBrand(i) {
switch (i.toLowerCase()) {
case 'k':
return King;
case 'q':
return Queen;
case 'r':
return Rook;
case 'b':
return Bishop;
case 'n':
return Knight;
case 'p':
return Pawn;
}
}
function parseSource(s) {
if (s == null) {
return null;
}
if (!isNaN(Number(s))) {
return new Point(NaN, rankIndex(s));
}
return new Point(fileIndex(s), NaN);
}
function normalMove(algStr, position) {
var $__8 = $traceurRuntime.assertObject(chunker.exec(algStr)),
_ = $__8[0],
i = $__8[1],
s = $__8[2],
t = $__8[3];
var source = parseSource(s);
var target = squareCoords(t);
var $__8 = $traceurRuntime.spread(pieces(position, source, target, i)),
piece = $__8[0],
extra = $__8[1];
if (piece == null) {
throw new MobilityError(algStr, position);
}
if (extra != null) {
throw new AmbiguityError(algStr);
}
var $__8 = $traceurRuntime.assertObject(EnPassantTarget.capturablePiece(position, piece, target)),
captureTarget = $__8.captureTarget,
capturePiece = $__8.capturePiece,
isEnPassant = $__8.isEnPassant;
return {
piece: piece,
source: position.pieceCoords(piece),
target: target,
isCapture: capturePiece != null,
captureTarget: captureTarget,
capturePiece: capturePiece,
isEnPassant: isEnPassant
};
}
function castlingMove(algStr, position) {
var king = position.one({
brand: KING,
color: position.activeColor
});
return {
piece: king,
source: position.pieceCoords(king),
target: getCastlingCoords(algStr, position),
isCapture: false,
capturePiece: null,
isEnPassant: false
};
}
function getCastlingCoords(algStr, position) {
switch (algStr) {
case 'O-O':
return squareCoords(position.activeColor === WHITE ? 'g1' : 'g8');
case 'O-O-O':
return squareCoords(position.activeColor === WHITE ? 'c1' : 'c8');
}
}
function getKing(position) {
return position.one({
brand: King.brand,
color: position.activeColor
});
}
|