var Parse = {

// 压缩JSON

compress: function (source) {

var index = 0, length = source.length, symbol, position, result = ""

while (index < length) {

symbol = source[index];

if ("\t\r\n ".indexOf(symbol) > -1) {

// Skip whitespace tokens.

index++;

} else if (symbol == "/") {

symbol = source[++index];

if (symbol == "/") {

// Line comment.

position = source.indexOf("\n", index);

if (position < 0) {

position = source.indexOf("\r", index);

}

index = position < 0 ? length : position;

} else if (symbol == "*") {

// Block comment.

position = source.indexOf("*/", index);

if (position < 0) {

throw SyntaxError("Unterminated block comment.");

}

// Advance the scanner position past the end of the comment.

index = position += 2;

} else {

throw SyntaxError("Invalid comment.");

}

} else if (symbol == '"') {

// Save the current scanner position.

position = index;

// Parse JavaScript strings separately to ensure that comment tokens

// within them are preserved correctly.

while (index < length) {

symbol = source[++index];

if (symbol == "\\") {

// Advance the scanner past escaped characters.

index++;

} else if (symbol == '"') {

// An unescaped double-quote character marks the end of the string.

break;

}

}

if (source[index] == '"') {

result += source.slice(position, ++index);

} else {

throw SyntaxError("Unterminated string.");

}

} else {

result += symbol;

index++;

}

}

return result;

}

}