summaryrefslogtreecommitdiff
path: root/src/mongo/bson/json.h
diff options
context:
space:
mode:
authorMark Benvenuto <mark.benvenuto@mongodb.com>2015-06-20 00:22:50 -0400
committerMark Benvenuto <mark.benvenuto@mongodb.com>2015-06-20 10:56:02 -0400
commit9c2ed42daa8fbbef4a919c21ec564e2db55e8d60 (patch)
tree3814f79c10d7b490948d8cb7b112ac1dd41ceff1 /src/mongo/bson/json.h
parent01965cf52bce6976637ecb8f4a622aeb05ab256a (diff)
downloadmongo-9c2ed42daa8fbbef4a919c21ec564e2db55e8d60.tar.gz
SERVER-18579: Clang-Format - reformat code, no comment reflow
Diffstat (limited to 'src/mongo/bson/json.h')
-rw-r--r--src/mongo/bson/json.h865
1 files changed, 430 insertions, 435 deletions
diff --git a/src/mongo/bson/json.h b/src/mongo/bson/json.h
index 34564765242..7a22d1d2186 100644
--- a/src/mongo/bson/json.h
+++ b/src/mongo/bson/json.h
@@ -35,454 +35,449 @@
namespace mongo {
- /**
- * Create a BSONObj from a JSON <http://www.json.org>,
- * <http://www.ietf.org/rfc/rfc4627.txt> string. In addition to the JSON
- * extensions extensions described here
- * <http://dochub.mongodb.org/core/mongodbextendedjson>, this function
- * accepts unquoted field names and allows single quotes to optionally be
- * used when specifying field names and std::string values instead of double
- * quotes. JSON unicode escape sequences (of the form \uXXXX) are
- * converted to utf8.
+/**
+ * Create a BSONObj from a JSON <http://www.json.org>,
+ * <http://www.ietf.org/rfc/rfc4627.txt> string. In addition to the JSON
+ * extensions extensions described here
+ * <http://dochub.mongodb.org/core/mongodbextendedjson>, this function
+ * accepts unquoted field names and allows single quotes to optionally be
+ * used when specifying field names and std::string values instead of double
+ * quotes. JSON unicode escape sequences (of the form \uXXXX) are
+ * converted to utf8.
+ *
+ * @throws MsgAssertionException if parsing fails. The message included with
+ * this assertion includes the character offset where parsing failed.
+ */
+BSONObj fromjson(const std::string& str);
+
+/** @param len will be size of JSON object in text chars. */
+BSONObj fromjson(const char* str, int* len = NULL);
+
+/**
+ * Tests whether the JSON string is an Array.
+ *
+ * Useful for assigning the result of fromjson to the right object type. Either:
+ * BSONObj
+ * BSONArray
+ *
+ * @example Using the method to select the proper type.
+ * If this method returns true, the user could store the result of fromjson
+ * inside a BSONArray, rather than a BSONObj, in order to have it print as an
+ * array when passed to tojson.
+ *
+ * @param obj The JSON string to test.
+ */
+bool isArray(StringData str);
+
+/**
+ * Convert a BSONArray to a JSON string.
+ *
+ * @param arr The BSON Array.
+ * @param format The JSON format (JS, TenGen, Strict).
+ * @param pretty Enables pretty output.
+ */
+std::string tojson(const BSONArray& arr, JsonStringFormat format = Strict, bool pretty = false);
+
+/**
+ * Convert a BSONObj to a JSON string.
+ *
+ * @param obj The BSON Object.
+ * @param format The JSON format (JS, TenGen, Strict).
+ * @param pretty Enables pretty output.
+ */
+std::string tojson(const BSONObj& obj, JsonStringFormat format = Strict, bool pretty = false);
+
+/**
+ * Parser class. A BSONObj is constructed incrementally by passing a
+ * BSONObjBuilder to the recursive parsing methods. The grammar for the
+ * element parsed is described before each function.
+ */
+class JParse {
+public:
+ explicit JParse(StringData str);
+
+ /*
+ * Notation: All-uppercase symbols denote non-terminals; all other
+ * symbols are literals.
+ */
+
+ /*
+ * VALUE :
+ * STRING
+ * | NUMBER
+ * | NUMBERINT
+ * | NUMBERLONG
+ * | OBJECT
+ * | ARRAY
*
- * @throws MsgAssertionException if parsing fails. The message included with
- * this assertion includes the character offset where parsing failed.
+ * | true
+ * | false
+ * | null
+ * | undefined
+ *
+ * | NaN
+ * | Infinity
+ * | -Infinity
+ *
+ * | DATE
+ * | TIMESTAMP
+ * | REGEX
+ * | OBJECTID
+ * | DBREF
+ *
+ * | new CONSTRUCTOR
+ */
+private:
+ Status value(StringData fieldName, BSONObjBuilder&);
+
+ /*
+ * OBJECT :
+ * {}
+ * | { MEMBERS }
+ * | SPECIALOBJECT
+ *
+ * MEMBERS :
+ * PAIR
+ * | PAIR , MEMBERS
+ *
+ * PAIR :
+ * FIELD : VALUE
+ *
+ * SPECIALOBJECT :
+ * OIDOBJECT
+ * | BINARYOBJECT
+ * | DATEOBJECT
+ * | TIMESTAMPOBJECT
+ * | REGEXOBJECT
+ * | REFOBJECT
+ * | UNDEFINEDOBJECT
+ * | NUMBERLONGOBJECT
+ * | MINKEYOBJECT
+ * | MAXKEYOBJECT
+ *
+ */
+public:
+ Status object(StringData fieldName, BSONObjBuilder&, bool subObj = true);
+ Status parse(BSONObjBuilder& builder);
+ bool isArray();
+
+private:
+ /* The following functions are called with the '{' and the first
+ * field already parsed since they are both implied given the
+ * context. */
+ /*
+ * OIDOBJECT :
+ * { FIELD("$oid") : <24 character hex std::string> }
*/
- BSONObj fromjson(const std::string& str);
+ Status objectIdObject(StringData fieldName, BSONObjBuilder&);
- /** @param len will be size of JSON object in text chars. */
- BSONObj fromjson(const char* str, int* len=NULL);
+ /*
+ * BINARYOBJECT :
+ * { FIELD("$binary") : <base64 representation of a binary std::string>,
+ * FIELD("$type") : <hexadecimal representation of a single byte
+ * indicating the data type> }
+ */
+ Status binaryObject(StringData fieldName, BSONObjBuilder&);
- /**
- * Tests whether the JSON string is an Array.
+ /*
+ * DATEOBJECT :
+ * { FIELD("$date") : <64 bit signed integer for milliseconds since epoch> }
+ */
+ Status dateObject(StringData fieldName, BSONObjBuilder&);
+
+ /*
+ * TIMESTAMPOBJECT :
+ * { FIELD("$timestamp") : {
+ * FIELD("t") : <32 bit unsigned integer for seconds since epoch>,
+ * FIELD("i") : <32 bit unsigned integer for the increment> } }
+ */
+ Status timestampObject(StringData fieldName, BSONObjBuilder&);
+
+ /*
+ * NOTE: the rules for the body of the regex are different here,
+ * since it is quoted instead of surrounded by slashes.
+ * REGEXOBJECT :
+ * { FIELD("$regex") : <string representing body of regex> }
+ * | { FIELD("$regex") : <string representing body of regex>,
+ * FIELD("$options") : <string representing regex options> }
+ */
+ Status regexObject(StringData fieldName, BSONObjBuilder&);
+
+ /*
+ * REFOBJECT :
+ * { FIELD("$ref") : <string representing collection name>,
+ * FIELD("$id") : <24 character hex std::string> }
+ * | { FIELD("$ref") : std::string , FIELD("$id") : OBJECTID }
+ * | { FIELD("$ref") : std::string , FIELD("$id") : OIDOBJECT }
+ */
+ Status dbRefObject(StringData fieldName, BSONObjBuilder&);
+
+ /*
+ * UNDEFINEDOBJECT :
+ * { FIELD("$undefined") : true }
+ */
+ Status undefinedObject(StringData fieldName, BSONObjBuilder&);
+
+ /*
+ * NUMBERLONGOBJECT :
+ * { FIELD("$numberLong") : "<number>" }
+ */
+ Status numberLongObject(StringData fieldName, BSONObjBuilder&);
+
+ /*
+ * MINKEYOBJECT :
+ * { FIELD("$minKey") : 1 }
+ */
+ Status minKeyObject(StringData fieldName, BSONObjBuilder& builder);
+
+ /*
+ * MAXKEYOBJECT :
+ * { FIELD("$maxKey") : 1 }
+ */
+ Status maxKeyObject(StringData fieldName, BSONObjBuilder& builder);
+
+ /*
+ * ARRAY :
+ * []
+ * | [ ELEMENTS ]
+ *
+ * ELEMENTS :
+ * VALUE
+ * | VALUE , ELEMENTS
+ */
+ Status array(StringData fieldName, BSONObjBuilder&, bool subObj = true);
+
+ /*
+ * NOTE: Currently only Date can be preceded by the "new" keyword
+ * CONSTRUCTOR :
+ * DATE
+ */
+ Status constructor(StringData fieldName, BSONObjBuilder&);
+
+ /* The following functions only parse the body of the constructor
+ * between the parentheses, not including the constructor name */
+ /*
+ * DATE :
+ * Date( <64 bit signed integer for milliseconds since epoch> )
+ */
+ Status date(StringData fieldName, BSONObjBuilder&);
+
+ /*
+ * TIMESTAMP :
+ * Timestamp( <32 bit unsigned integer for seconds since epoch>,
+ * <32 bit unsigned integer for the increment> )
+ */
+ Status timestamp(StringData fieldName, BSONObjBuilder&);
+
+ /*
+ * OBJECTID :
+ * ObjectId( <24 character hex std::string> )
+ */
+ Status objectId(StringData fieldName, BSONObjBuilder&);
+
+ /*
+ * NUMBERLONG :
+ * NumberLong( <number> )
+ */
+ Status numberLong(StringData fieldName, BSONObjBuilder&);
+
+ /*
+ * NUMBERINT :
+ * NumberInt( <number> )
+ */
+ Status numberInt(StringData fieldName, BSONObjBuilder&);
+
+ /*
+ * DBREF :
+ * Dbref( <namespace std::string> , <24 character hex std::string> )
+ */
+ Status dbRef(StringData fieldName, BSONObjBuilder&);
+
+ /*
+ * REGEX :
+ * / REGEXCHARS / REGEXOPTIONS
+ *
+ * REGEXCHARS :
+ * REGEXCHAR
+ * | REGEXCHAR REGEXCHARS
*
- * Useful for assigning the result of fromjson to the right object type. Either:
- * BSONObj
- * BSONArray
+ * REGEXCHAR :
+ * any-Unicode-character-except-/-or-\-or-CONTROLCHAR
+ * | \"
+ * | \'
+ * | \\
+ * | \/
+ * | \b
+ * | \f
+ * | \n
+ * | \r
+ * | \t
+ * | \v
+ * | \u HEXDIGIT HEXDIGIT HEXDIGIT HEXDIGIT
+ * | \any-Unicode-character-except-x-or-[0-7]
*
- * @example Using the method to select the proper type.
- * If this method returns true, the user could store the result of fromjson
- * inside a BSONArray, rather than a BSONObj, in order to have it print as an
- * array when passed to tojson.
+ * REGEXOPTIONS :
+ * REGEXOPTION
+ * | REGEXOPTION REGEXOPTIONS
*
- * @param obj The JSON string to test.
+ * REGEXOPTION :
+ * g | i | m | s
*/
- bool isArray(StringData str);
+ Status regex(StringData fieldName, BSONObjBuilder&);
+ Status regexPat(std::string* result);
+ Status regexOpt(std::string* result);
+ Status regexOptCheck(StringData opt);
- /**
- * Convert a BSONArray to a JSON string.
+ /*
+ * NUMBER :
*
- * @param arr The BSON Array.
- * @param format The JSON format (JS, TenGen, Strict).
- * @param pretty Enables pretty output.
+ * NOTE: Number parsing is based on standard library functions, not
+ * necessarily on the JSON numeric grammar.
+ *
+ * Number as value - strtoll and strtod
+ * Date - strtoll
+ * Timestamp - strtoul for both timestamp and increment and '-'
+ * before a number explicity disallowed
*/
- std::string tojson(
- const BSONArray& arr,
- JsonStringFormat format = Strict,
- bool pretty = false
- );
+ Status number(StringData fieldName, BSONObjBuilder&);
- /**
- * Convert a BSONObj to a JSON string.
+ /*
+ * FIELD :
+ * STRING
+ * | [a-zA-Z$_] FIELDCHARS
+ *
+ * FIELDCHARS :
+ * [a-zA-Z0-9$_]
+ * | [a-zA-Z0-9$_] FIELDCHARS
+ */
+ Status field(std::string* result);
+
+ /*
+ * std::string :
+ * " "
+ * | ' '
+ * | " CHARS "
+ * | ' CHARS '
+ */
+ Status quotedString(std::string* result);
+
+ /*
+ * CHARS :
+ * CHAR
+ * | CHAR CHARS
+ *
+ * Note: " or ' may be allowed depending on whether the std::string is
+ * double or single quoted
+ *
+ * CHAR :
+ * any-Unicode-character-except-"-or-'-or-\-or-CONTROLCHAR
+ * | \"
+ * | \'
+ * | \\
+ * | \/
+ * | \b
+ * | \f
+ * | \n
+ * | \r
+ * | \t
+ * | \v
+ * | \u HEXDIGIT HEXDIGIT HEXDIGIT HEXDIGIT
+ * | \any-Unicode-character-except-x-or-[0-9]
+ *
+ * HEXDIGIT : [0..9a..fA..F]
*
- * @param obj The BSON Object.
- * @param format The JSON format (JS, TenGen, Strict).
- * @param pretty Enables pretty output.
+ * per http://www.ietf.org/rfc/rfc4627.txt, control characters are
+ * (U+0000 through U+001F). U+007F is not mentioned as a control
+ * character.
+ * CONTROLCHAR : [0x00..0x1F]
+ *
+ * If there is not an error, result will contain a null terminated
+ * string, but there is no guarantee that it will not contain other
+ * null characters.
+ */
+ Status chars(std::string* result, const char* terminalSet, const char* allowedSet = NULL);
+
+ /**
+ * Converts the two byte Unicode code point to its UTF8 character
+ * encoding representation. This function returns a std::string because
+ * UTF8 encodings for code points from 0x0000 to 0xFFFF can range
+ * from one to three characters.
*/
- std::string tojson(
- const BSONObj& obj,
- JsonStringFormat format = Strict,
- bool pretty = false
- );
+ std::string encodeUTF8(unsigned char first, unsigned char second) const;
/**
- * Parser class. A BSONObj is constructed incrementally by passing a
- * BSONObjBuilder to the recursive parsing methods. The grammar for the
- * element parsed is described before each function.
- */
- class JParse {
- public:
- explicit JParse(StringData str);
-
- /*
- * Notation: All-uppercase symbols denote non-terminals; all other
- * symbols are literals.
- */
-
- /*
- * VALUE :
- * STRING
- * | NUMBER
- * | NUMBERINT
- * | NUMBERLONG
- * | OBJECT
- * | ARRAY
- *
- * | true
- * | false
- * | null
- * | undefined
- *
- * | NaN
- * | Infinity
- * | -Infinity
- *
- * | DATE
- * | TIMESTAMP
- * | REGEX
- * | OBJECTID
- * | DBREF
- *
- * | new CONSTRUCTOR
- */
- private:
- Status value(StringData fieldName, BSONObjBuilder&);
-
- /*
- * OBJECT :
- * {}
- * | { MEMBERS }
- * | SPECIALOBJECT
- *
- * MEMBERS :
- * PAIR
- * | PAIR , MEMBERS
- *
- * PAIR :
- * FIELD : VALUE
- *
- * SPECIALOBJECT :
- * OIDOBJECT
- * | BINARYOBJECT
- * | DATEOBJECT
- * | TIMESTAMPOBJECT
- * | REGEXOBJECT
- * | REFOBJECT
- * | UNDEFINEDOBJECT
- * | NUMBERLONGOBJECT
- * | MINKEYOBJECT
- * | MAXKEYOBJECT
- *
- */
- public:
- Status object(StringData fieldName, BSONObjBuilder&, bool subObj=true);
- Status parse(BSONObjBuilder& builder);
- bool isArray();
-
- private:
- /* The following functions are called with the '{' and the first
- * field already parsed since they are both implied given the
- * context. */
- /*
- * OIDOBJECT :
- * { FIELD("$oid") : <24 character hex std::string> }
- */
- Status objectIdObject(StringData fieldName, BSONObjBuilder&);
-
- /*
- * BINARYOBJECT :
- * { FIELD("$binary") : <base64 representation of a binary std::string>,
- * FIELD("$type") : <hexadecimal representation of a single byte
- * indicating the data type> }
- */
- Status binaryObject(StringData fieldName, BSONObjBuilder&);
-
- /*
- * DATEOBJECT :
- * { FIELD("$date") : <64 bit signed integer for milliseconds since epoch> }
- */
- Status dateObject(StringData fieldName, BSONObjBuilder&);
-
- /*
- * TIMESTAMPOBJECT :
- * { FIELD("$timestamp") : {
- * FIELD("t") : <32 bit unsigned integer for seconds since epoch>,
- * FIELD("i") : <32 bit unsigned integer for the increment> } }
- */
- Status timestampObject(StringData fieldName, BSONObjBuilder&);
-
- /*
- * NOTE: the rules for the body of the regex are different here,
- * since it is quoted instead of surrounded by slashes.
- * REGEXOBJECT :
- * { FIELD("$regex") : <string representing body of regex> }
- * | { FIELD("$regex") : <string representing body of regex>,
- * FIELD("$options") : <string representing regex options> }
- */
- Status regexObject(StringData fieldName, BSONObjBuilder&);
-
- /*
- * REFOBJECT :
- * { FIELD("$ref") : <string representing collection name>,
- * FIELD("$id") : <24 character hex std::string> }
- * | { FIELD("$ref") : std::string , FIELD("$id") : OBJECTID }
- * | { FIELD("$ref") : std::string , FIELD("$id") : OIDOBJECT }
- */
- Status dbRefObject(StringData fieldName, BSONObjBuilder&);
-
- /*
- * UNDEFINEDOBJECT :
- * { FIELD("$undefined") : true }
- */
- Status undefinedObject(StringData fieldName, BSONObjBuilder&);
-
- /*
- * NUMBERLONGOBJECT :
- * { FIELD("$numberLong") : "<number>" }
- */
- Status numberLongObject(StringData fieldName, BSONObjBuilder&);
-
- /*
- * MINKEYOBJECT :
- * { FIELD("$minKey") : 1 }
- */
- Status minKeyObject(StringData fieldName, BSONObjBuilder& builder);
-
- /*
- * MAXKEYOBJECT :
- * { FIELD("$maxKey") : 1 }
- */
- Status maxKeyObject(StringData fieldName, BSONObjBuilder& builder);
-
- /*
- * ARRAY :
- * []
- * | [ ELEMENTS ]
- *
- * ELEMENTS :
- * VALUE
- * | VALUE , ELEMENTS
- */
- Status array(StringData fieldName, BSONObjBuilder&, bool subObj=true);
-
- /*
- * NOTE: Currently only Date can be preceded by the "new" keyword
- * CONSTRUCTOR :
- * DATE
- */
- Status constructor(StringData fieldName, BSONObjBuilder&);
-
- /* The following functions only parse the body of the constructor
- * between the parentheses, not including the constructor name */
- /*
- * DATE :
- * Date( <64 bit signed integer for milliseconds since epoch> )
- */
- Status date(StringData fieldName, BSONObjBuilder&);
-
- /*
- * TIMESTAMP :
- * Timestamp( <32 bit unsigned integer for seconds since epoch>,
- * <32 bit unsigned integer for the increment> )
- */
- Status timestamp(StringData fieldName, BSONObjBuilder&);
-
- /*
- * OBJECTID :
- * ObjectId( <24 character hex std::string> )
- */
- Status objectId(StringData fieldName, BSONObjBuilder&);
-
- /*
- * NUMBERLONG :
- * NumberLong( <number> )
- */
- Status numberLong(StringData fieldName, BSONObjBuilder&);
-
- /*
- * NUMBERINT :
- * NumberInt( <number> )
- */
- Status numberInt(StringData fieldName, BSONObjBuilder&);
-
- /*
- * DBREF :
- * Dbref( <namespace std::string> , <24 character hex std::string> )
- */
- Status dbRef(StringData fieldName, BSONObjBuilder&);
-
- /*
- * REGEX :
- * / REGEXCHARS / REGEXOPTIONS
- *
- * REGEXCHARS :
- * REGEXCHAR
- * | REGEXCHAR REGEXCHARS
- *
- * REGEXCHAR :
- * any-Unicode-character-except-/-or-\-or-CONTROLCHAR
- * | \"
- * | \'
- * | \\
- * | \/
- * | \b
- * | \f
- * | \n
- * | \r
- * | \t
- * | \v
- * | \u HEXDIGIT HEXDIGIT HEXDIGIT HEXDIGIT
- * | \any-Unicode-character-except-x-or-[0-7]
- *
- * REGEXOPTIONS :
- * REGEXOPTION
- * | REGEXOPTION REGEXOPTIONS
- *
- * REGEXOPTION :
- * g | i | m | s
- */
- Status regex(StringData fieldName, BSONObjBuilder&);
- Status regexPat(std::string* result);
- Status regexOpt(std::string* result);
- Status regexOptCheck(StringData opt);
-
- /*
- * NUMBER :
- *
- * NOTE: Number parsing is based on standard library functions, not
- * necessarily on the JSON numeric grammar.
- *
- * Number as value - strtoll and strtod
- * Date - strtoll
- * Timestamp - strtoul for both timestamp and increment and '-'
- * before a number explicity disallowed
- */
- Status number(StringData fieldName, BSONObjBuilder&);
-
- /*
- * FIELD :
- * STRING
- * | [a-zA-Z$_] FIELDCHARS
- *
- * FIELDCHARS :
- * [a-zA-Z0-9$_]
- * | [a-zA-Z0-9$_] FIELDCHARS
- */
- Status field(std::string* result);
-
- /*
- * std::string :
- * " "
- * | ' '
- * | " CHARS "
- * | ' CHARS '
- */
- Status quotedString(std::string* result);
-
- /*
- * CHARS :
- * CHAR
- * | CHAR CHARS
- *
- * Note: " or ' may be allowed depending on whether the std::string is
- * double or single quoted
- *
- * CHAR :
- * any-Unicode-character-except-"-or-'-or-\-or-CONTROLCHAR
- * | \"
- * | \'
- * | \\
- * | \/
- * | \b
- * | \f
- * | \n
- * | \r
- * | \t
- * | \v
- * | \u HEXDIGIT HEXDIGIT HEXDIGIT HEXDIGIT
- * | \any-Unicode-character-except-x-or-[0-9]
- *
- * HEXDIGIT : [0..9a..fA..F]
- *
- * per http://www.ietf.org/rfc/rfc4627.txt, control characters are
- * (U+0000 through U+001F). U+007F is not mentioned as a control
- * character.
- * CONTROLCHAR : [0x00..0x1F]
- *
- * If there is not an error, result will contain a null terminated
- * string, but there is no guarantee that it will not contain other
- * null characters.
- */
- Status chars(std::string* result, const char* terminalSet, const char* allowedSet=NULL);
-
- /**
- * Converts the two byte Unicode code point to its UTF8 character
- * encoding representation. This function returns a std::string because
- * UTF8 encodings for code points from 0x0000 to 0xFFFF can range
- * from one to three characters.
- */
- std::string encodeUTF8(unsigned char first, unsigned char second) const;
-
- /**
- * @return true if the given token matches the next non whitespace
- * sequence in our buffer, and false if the token doesn't match or
- * we reach the end of our buffer. Do not update the pointer to our
- * buffer (same as calling readTokenImpl with advance=false).
- */
- inline bool peekToken(const char* token);
-
- /**
- * @return true if the given token matches the next non whitespace
- * sequence in our buffer, and false if the token doesn't match or
- * we reach the end of our buffer. Updates the pointer to our
- * buffer (same as calling readTokenImpl with advance=true).
- */
- inline bool readToken(const char* token);
-
- /**
- * @return true if the given token matches the next non whitespace
- * sequence in our buffer, and false if the token doesn't match or
- * we reach the end of our buffer. Do not update the pointer to our
- * buffer if advance is false.
- */
- bool readTokenImpl(const char* token, bool advance=true);
-
- /**
- * @return true if the next field in our stream matches field.
- * Handles single quoted, double quoted, and unquoted field names
- */
- bool readField(StringData field);
-
- /**
- * @return true if matchChar is in matchSet
- * @return true if matchSet is NULL and false if it is an empty string
- */
- bool match(char matchChar, const char* matchSet) const;
-
- /**
- * @return true if every character in the std::string is a hex digit
- */
- bool isHexString(StringData) const;
-
- /**
- * @return true if every character in the std::string is a valid base64
- * character
- */
- bool isBase64String(StringData) const;
-
- /**
- * @return FailedToParse status with the given message and some
- * additional context information
- */
- Status parseError(StringData msg);
- public:
- inline int offset() { return (_input - _buf); }
-
- private:
- /*
- * _buf - start of our input buffer
- * _input - cursor we advance in our input buffer
- * _input_end - sentinel for the end of our input buffer
- *
- * _buf is the null terminated buffer containing the JSON std::string we
- * are parsing. _input_end points to the null byte at the end of
- * the buffer. strtoll, strtol, and strtod will access the null
- * byte at the end of the buffer because they are assuming a c-style
- * string.
- */
- const char* const _buf;
- const char* _input;
- const char* const _input_end;
- };
-
-} // namespace mongo
+ * @return true if the given token matches the next non whitespace
+ * sequence in our buffer, and false if the token doesn't match or
+ * we reach the end of our buffer. Do not update the pointer to our
+ * buffer (same as calling readTokenImpl with advance=false).
+ */
+ inline bool peekToken(const char* token);
+
+ /**
+ * @return true if the given token matches the next non whitespace
+ * sequence in our buffer, and false if the token doesn't match or
+ * we reach the end of our buffer. Updates the pointer to our
+ * buffer (same as calling readTokenImpl with advance=true).
+ */
+ inline bool readToken(const char* token);
+
+ /**
+ * @return true if the given token matches the next non whitespace
+ * sequence in our buffer, and false if the token doesn't match or
+ * we reach the end of our buffer. Do not update the pointer to our
+ * buffer if advance is false.
+ */
+ bool readTokenImpl(const char* token, bool advance = true);
+
+ /**
+ * @return true if the next field in our stream matches field.
+ * Handles single quoted, double quoted, and unquoted field names
+ */
+ bool readField(StringData field);
+
+ /**
+ * @return true if matchChar is in matchSet
+ * @return true if matchSet is NULL and false if it is an empty string
+ */
+ bool match(char matchChar, const char* matchSet) const;
+
+ /**
+ * @return true if every character in the std::string is a hex digit
+ */
+ bool isHexString(StringData) const;
+
+ /**
+ * @return true if every character in the std::string is a valid base64
+ * character
+ */
+ bool isBase64String(StringData) const;
+
+ /**
+ * @return FailedToParse status with the given message and some
+ * additional context information
+ */
+ Status parseError(StringData msg);
+
+public:
+ inline int offset() {
+ return (_input - _buf);
+ }
+
+private:
+ /*
+ * _buf - start of our input buffer
+ * _input - cursor we advance in our input buffer
+ * _input_end - sentinel for the end of our input buffer
+ *
+ * _buf is the null terminated buffer containing the JSON std::string we
+ * are parsing. _input_end points to the null byte at the end of
+ * the buffer. strtoll, strtol, and strtod will access the null
+ * byte at the end of the buffer because they are assuming a c-style
+ * string.
+ */
+ const char* const _buf;
+ const char* _input;
+ const char* const _input_end;
+};
+
+} // namespace mongo