var canReorder = require('./reorderable').canReorder;
var extractProperties = require('./extractor');
function mergeMediaQueries(tokens) {
var candidates = {};
var reduced = [];
for (var i = tokens.length - 1; i >= 0; i--) {
var token = tokens[i];
if (token[0] != 'block')
continue;
var candidate = candidates[token[1][0]];
if (!candidate) {
candidate = [];
candidates[token[1][0]] = candidate;
}
candidate.push(i);
}
for (var name in candidates) {
var positions = candidates[name];
positionLoop:
for (var j = positions.length - 1; j > 0; j--) {
var positionOne = positions[j];
var tokenOne = tokens[positionOne];
var positionTwo = positions[j - 1];
var tokenTwo = tokens[positionTwo];
directionLoop:
for (var direction = 1; direction >= -1; direction -= 2) {
var topToBottom = direction == 1;
var from = topToBottom ? positionOne + 1 : positionTwo - 1;
var to = topToBottom ? positionTwo : positionOne;
var delta = topToBottom ? 1 : -1;
var source = topToBottom ? tokenOne : tokenTwo;
var target = topToBottom ? tokenTwo : tokenOne;
var movedProperties = extractProperties(source);
while (from != to) {
var traversedProperties = extractProperties(tokens[from]);
from += delta;
if (!canReorder(movedProperties, traversedProperties))
continue directionLoop;
}
target[2] = topToBottom ?
source[2].concat(target[2]) :
target[2].concat(source[2]);
source[2] = [];
reduced.push(target);
continue positionLoop;
}
}
}
return reduced;
}
module.exports = mergeMediaQueries;
# |
Change |
User |
Description |
Committed |
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#1
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23539 |
jenbottom |
Adding the basic code for ember test appk, created with 'ember new' command |
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