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<h1>Code coverage report for <span class="entity">lib/parser/javascript.js</span></h1>
<h2>
Statements: <span class="metric">95.83% <small>(115 / 120)</small></span>
Branches: <span class="metric">92% <small>(46 / 50)</small></span>
Functions: <span class="metric">100% <small>(9 / 9)</small></span>
Lines: <span class="metric">95.83% <small>(115 / 120)</small></span>
Ignored: <span class="metric">1 statement, 1 branch</span>
</h2>
<div class="path"><a href="../../index.html">All files</a> » <a href="index.html">lib/parser/</a> » javascript.js</div>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">'use strict';
var util = require("util");
function Packet(type, size) {
this.type = type;
this.size = +size;
}
function ReplyParser(return_buffers) {
this.name = exports.name;
this.return_buffers = return_buffers;
this._buffer = null;
this._offset = 0;
this._encoding = "utf-8";
}
function IncompleteReadBuffer(message) {
this.name = "IncompleteReadBuffer";
this.message = message;
}
util.inherits(IncompleteReadBuffer, Error);
ReplyParser.prototype._parseResult = function (type) {
var start, end, offset, packetHeader;
if (type === 43 || type === 45) { // + or -
// up to the delimiter
end = this._packetEndOffset() - 1;
start = this._offset;
// include the delimiter
this._offset = end + 2;
<span class="missing-if-branch" title="if path not taken" >I</span>if (end > this._buffer.length) {
<span class="cstat-no" title="statement not covered" > this._offset = start;</span>
<span class="cstat-no" title="statement not covered" > throw new IncompleteReadBuffer("Wait for more data.");</span>
}
if (type === 45) {
return new Error(this._buffer.toString(this._encoding, start, end));
} else if (this.return_buffers) {
return this._buffer.slice(start, end);
}
return this._buffer.toString(this._encoding, start, end);
} else if (type === 58) { // :
// up to the delimiter
end = this._packetEndOffset() - 1;
start = this._offset;
// include the delimiter
this._offset = end + 2;
<span class="missing-if-branch" title="if path not taken" >I</span>if (end > this._buffer.length) {
<span class="cstat-no" title="statement not covered" > this._offset = start;</span>
<span class="cstat-no" title="statement not covered" > throw new IncompleteReadBuffer("Wait for more data.");</span>
}
// return the coerced numeric value
return +this._buffer.toString('ascii', start, end);
} else if (type === 36) { // $
// set a rewind point, as the packet could be larger than the
// buffer in memory
offset = this._offset - 1;
packetHeader = new Packet(type, this.parseHeader());
// packets with a size of -1 are considered null
if (packetHeader.size === -1) {
return null;
}
end = this._offset + packetHeader.size;
start = this._offset;
// set the offset to after the delimiter
this._offset = end + 2;
if (end > this._buffer.length) {
this._offset = offset;
throw new IncompleteReadBuffer("Wait for more data.");
}
if (this.return_buffers) {
return this._buffer.slice(start, end);
}
return this._buffer.toString(this._encoding, start, end);
} else { // *
offset = this._offset;
packetHeader = new Packet(type, this.parseHeader());
if (packetHeader.size < 0) {
return null;
}
if (packetHeader.size > this._bytesRemaining()) {
this._offset = offset - 1;
throw new IncompleteReadBuffer("Wait for more data.");
}
var reply = [];
var ntype, i, res;
offset = this._offset - 1;
for (i = 0; i < packetHeader.size; i++) {
ntype = this._buffer[this._offset++];
<span class="missing-if-branch" title="if path not taken" >I</span>if (this._offset > this._buffer.length) {
<span class="cstat-no" title="statement not covered" > throw new IncompleteReadBuffer("Wait for more data.");</span>
}
res = this._parseResult(ntype);
reply.push(res);
}
return reply;
}
};
ReplyParser.prototype.execute = function (buffer) {
this.append(buffer);
var type, ret, offset;
while (true) {
offset = this._offset;
// at least 4 bytes: :1\r\n
if (this._bytesRemaining() < 4) {
break;
}
try {
type = this._buffer[this._offset++];
if (type === 43) { // +
ret = this._parseResult(type);
this.send_reply(ret);
} else if (type === 45) { // -
ret = this._parseResult(type);
this.send_error(ret);
} else if (type === 58) { // :
ret = this._parseResult(type);
this.send_reply(ret);
} else if (type === 36) { // $
ret = this._parseResult(type);
this.send_reply(ret);
} else <span class="missing-if-branch" title="else path not taken" >E</span>if (type === 42) { // 42 *
// set a rewind point. if a failure occurs,
// wait for the next execute()/append() and try again
offset = this._offset - 1;
ret = this._parseResult(type);
this.send_reply(ret);
}
} catch (err) {
// catch the error (not enough data), rewind, and wait
// for the next packet to appear
this._offset = offset;
break;
}
}
};
ReplyParser.prototype.append = function (newBuffer) {
// first run
if (this._buffer === null) {
this._buffer = newBuffer;
return;
}
// out of data
if (this._offset >= this._buffer.length) {
this._buffer = newBuffer;
this._offset = 0;
return;
}
this._buffer = Buffer.concat([this._buffer.slice(this._offset), newBuffer]);
this._offset = 0;
};
ReplyParser.prototype.parseHeader = function () {
var end = this._packetEndOffset(),
value = this._buffer.toString('ascii', this._offset, end - 1);
this._offset = end + 1;
return value;
};
ReplyParser.prototype._packetEndOffset = function () {
var offset = this._offset;
while (this._buffer[offset] !== 0x0d && this._buffer[offset + 1] !== 0x0a) {
offset++;
/* istanbul ignore if: activate the js parser out of memory test to test this */
<span class="skip-if-branch" title="if path not taken" >I</span>if (offset >= this._buffer.length) {
<span class="cstat-skip" title="statement not covered" > throw new IncompleteReadBuffer("didn't see LF after NL reading multi bulk count (" + offset + " => " + this._buffer.length + ", " + this._offset + ")");</span>
}
}
offset++;
return offset;
};
ReplyParser.prototype._bytesRemaining = function () {
return (this._buffer.length - this._offset) < 0 ? 0 : (this._buffer.length - this._offset);
};
exports.Parser = ReplyParser;
exports.name = "javascript";
</pre></td></tr>
</table></pre>
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