本文整理汇总了C#中MongoDB.Bson.IO.JsonBuffer.UnRead方法的典型用法代码示例。如果您正苦于以下问题：C# JsonBuffer.UnRead方法的具体用法？C# JsonBuffer.UnRead怎么用？C# JsonBuffer.UnRead使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类MongoDB.Bson.IO.JsonBuffer的用法示例。
在下文中一共展示了JsonBuffer.UnRead方法的6个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: GetNextToken
/// <summary>
/// Gets the next JsonToken from a JsonBuffer.
/// </summary>
/// <param name="buffer">The buffer.</param>
/// <returns>The next token.</returns>
public static JsonToken GetNextToken(
JsonBuffer buffer
) {
// skip leading whitespace
var c = buffer.Read();
while (c != -1 && char.IsWhiteSpace((char) c)) {
c = buffer.Read();
}
if (c == -1) {
return new JsonToken(JsonTokenType.EndOfFile, "<eof>");
}
// leading character determines token type
switch (c) {
case '{': return new JsonToken(JsonTokenType.BeginObject, "{");
case '}': return new JsonToken(JsonTokenType.EndObject, "}");
case '[': return new JsonToken(JsonTokenType.BeginArray, "[");
case ']': return new JsonToken(JsonTokenType.EndArray, "]");
case ':': return new JsonToken(JsonTokenType.Colon, ":");
case ',': return new JsonToken(JsonTokenType.Comma, ",");
case '"': return GetStringToken(buffer);
case '/': return GetRegularExpressionToken(buffer);
default:
if (c == '-' || char.IsDigit((char) c)) {
return GetNumberToken(buffer, c);
} else if (c == '$' || char.IsLetter((char) c)) {
return GetUnquotedStringToken(buffer);
} else {
buffer.UnRead(c);
throw new FileFormatException(FormatMessage("Invalid JSON input", buffer, buffer.Position));
}
}
}示例2: GetNumberToken
//.........这里部分代码省略.........
break;
}
break;
case NumberState.SawExponentLetter:
type = JsonTokenType.Double;
switch (c) {
case '+':
case '-':
state = NumberState.SawExponentSign;
break;
default:
if (char.IsDigit((char) c)) {
state = NumberState.SawExponentDigits;
} else {
state = NumberState.Invalid;
}
break;
}
break;
case NumberState.SawExponentSign:
if (char.IsDigit((char) c)) {
state = NumberState.SawExponentDigits;
} else {
state = NumberState.Invalid;
}
break;
case NumberState.SawExponentDigits:
switch (c) {
case ',':
case '}':
case ']':
case ')':
case -1:
state = NumberState.Done;
break;
default:
if (char.IsDigit((char) c)) {
state = NumberState.SawExponentDigits;
} else if (char.IsWhiteSpace((char) c)) {
state = NumberState.Done;
} else {
state = NumberState.Invalid;
}
break;
}
break;
case NumberState.SawMinusI:
var sawMinusInfinity = true;
var nfinity = new char[] { 'n', 'f', 'i', 'n', 'i', 't', 'y' };
for (var i = 0; i < nfinity.Length; i++) {
if (c != nfinity[i]) {
sawMinusInfinity = false;
break;
}
c = buffer.Read();
}
if (sawMinusInfinity) {
type = JsonTokenType.Double;
switch (c) {
case ',':
case '}':
case ']':
case ')':
case -1:
state = NumberState.Done;
break;
default:
if (char.IsWhiteSpace((char) c)) {
state = NumberState.Done;
} else {
state = NumberState.Invalid;
}
break;
}
} else {
state = NumberState.Invalid;
}
break;
}
switch (state) {
case NumberState.Done:
buffer.UnRead(c);
var lexeme = buffer.Substring(start, buffer.Position - start);
if (type == JsonTokenType.Double) {
var value = XmlConvert.ToDouble(lexeme);
return new DoubleJsonToken(lexeme, value);
} else {
var value = XmlConvert.ToInt64(lexeme);
if (value < int.MinValue || value > int.MaxValue) {
return new Int64JsonToken(lexeme, value);
} else {
return new Int32JsonToken(lexeme, (int) value);
}
}
case NumberState.Invalid:
throw new FileFormatException(FormatMessage("Invalid JSON number", buffer, start));
}
}
}示例3: GetUnquotedStringToken
private static JsonToken GetUnquotedStringToken(
JsonBuffer buffer
) {
// opening letter or $ has already been read
var start = buffer.Position - 1;
var c = buffer.Read();
while (c == '$' || char.IsLetterOrDigit((char) c)) {
c = buffer.Read();
}
buffer.UnRead(c);
var lexeme = buffer.Substring(start, buffer.Position - start);
return new StringJsonToken(JsonTokenType.UnquotedString, lexeme, lexeme);
}示例4: GetRegularExpressionToken
private static JsonToken GetRegularExpressionToken(
JsonBuffer buffer
) {
// opening slash has already been read
var start = buffer.Position - 1;
var state = RegularExpressionState.InPattern;
while (true) {
var c = buffer.Read();
switch (state) {
case RegularExpressionState.InPattern:
switch (c) {
case '/': state = RegularExpressionState.InOptions; break;
case '\\': state = RegularExpressionState.InEscapeSequence; break;
default: state = RegularExpressionState.InPattern; break;
}
break;
case RegularExpressionState.InEscapeSequence:
state = RegularExpressionState.InPattern;
break;
case RegularExpressionState.InOptions:
switch (c) {
case 'g':
case 'i':
case 'm':
state = RegularExpressionState.InOptions;
break;
case ',':
case '}':
case ']':
case ')':
case -1:
state = RegularExpressionState.Done;
break;
default:
if (char.IsWhiteSpace((char) c)) {
state = RegularExpressionState.Done;
} else {
state = RegularExpressionState.Invalid;
}
break;
}
break;
}
switch (state) {
case RegularExpressionState.Done:
buffer.UnRead(c);
var lexeme = buffer.Substring(start, buffer.Position - start);
var regex = BsonRegularExpression.Create(lexeme);
return new RegularExpressionJsonToken(lexeme, regex);
case RegularExpressionState.Invalid:
throw new FileFormatException(FormatMessage("Invalid JSON regular expression", buffer, start));
}
}
}示例5: GetUnquotedStringToken
private static JsonToken GetUnquotedStringToken(
JsonBuffer buffer
) {
// opening letter or $ has already been read
var start = buffer.Position - 1;
string lexeme;
while (true) {
var c = buffer.Read();
switch (c) {
case ':':
case ',':
case '}':
case ']':
case -1:
buffer.UnRead(c);
lexeme = buffer.Substring(start, buffer.Position - start);
return new StringJsonToken(JsonTokenType.UnquotedString, lexeme, lexeme);
default:
if (c == '$' || char.IsLetterOrDigit((char) c)) {
// continue
} else if (char.IsWhiteSpace((char) c)) {
buffer.UnRead(c);
lexeme = buffer.Substring(start, buffer.Position - start);
return new StringJsonToken(JsonTokenType.UnquotedString, lexeme, lexeme);
} else {
if (c == '(') {
var value = buffer.Substring(start, buffer.Position - 1 - start);
switch (value) {
case "Date": return GetTenGenDate(buffer, start);
case "NumberLong": return GetTenGenInt64(buffer, start);
case "ObjectId": return GetTenGenObjectId(buffer, start);
}
}
throw new FileFormatException(FormatMessage("Invalid JSON unquoted string", buffer, start));
}
break;
}
}
}示例6: ReadDocumentsAs
internal static IEnumerable<object> ReadDocumentsAs(Type documentType, string filePath, FileFormat format)
{
if (format == FileFormat.Auto)
format = filePath.EndsWith(".json", StringComparison.OrdinalIgnoreCase) ? FileFormat.Json : FileFormat.Bson;
var serializer = BsonSerializer.LookupSerializer(documentType);
var options = DocumentSerializationOptions.Defaults;
if (format == FileFormat.Json)
{
var jb = new JsonBuffer(File.ReadAllText(filePath));
bool array = false;
for (; ; )
{
// skip white
int c;
for (; ; )
{
// end or white?
if ((c = jb.Read()) <= 32)
{
// end?
if (c < 0)
goto end;
// white
continue;
}
// document
if (c == '{')
{
jb.UnRead(c);
break;
}
// array
if (c == ',')
{
if (array)
continue;
}
else if (c == ']')
{
if (array)
{
array = false;
continue;
}
}
else if (c == '[')
{
if (!array)
{
array = true;
continue;
}
}
throw new FormatException(string.Format(null, "Unexpected character '{0}' at position {1}.", (char)c, jb.Position - 1));
}
using (var bsonReader = BsonReader.Create(jb))
yield return serializer.Deserialize(bsonReader, documentType, options);
}
end: ;
}
else
{
using (var stream = File.OpenRead(filePath))
{
long length = stream.Length;
while (stream.Position < length)
using (var bsonReader = BsonReader.Create(stream))
yield return serializer.Deserialize(bsonReader, documentType, options);
}
}
}