Thrift now a TLP - INFRA-3116
git-svn-id: https://svn.apache.org/repos/asf/thrift/branches/0.1.x@1028168 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/lib/cpp/src/protocol/TJSONProtocol.cpp b/lib/cpp/src/protocol/TJSONProtocol.cpp
new file mode 100644
index 0000000..2a9c8f0
--- /dev/null
+++ b/lib/cpp/src/protocol/TJSONProtocol.cpp
@@ -0,0 +1,998 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+#include "TJSONProtocol.h"
+
+#include <math.h>
+#include <boost/lexical_cast.hpp>
+#include "TBase64Utils.h"
+#include <transport/TTransportException.h>
+
+using namespace apache::thrift::transport;
+
+namespace apache { namespace thrift { namespace protocol {
+
+
+// Static data
+
+static const uint8_t kJSONObjectStart = '{';
+static const uint8_t kJSONObjectEnd = '}';
+static const uint8_t kJSONArrayStart = '[';
+static const uint8_t kJSONArrayEnd = ']';
+static const uint8_t kJSONNewline = '\n';
+static const uint8_t kJSONPairSeparator = ':';
+static const uint8_t kJSONElemSeparator = ',';
+static const uint8_t kJSONBackslash = '\\';
+static const uint8_t kJSONStringDelimiter = '"';
+static const uint8_t kJSONZeroChar = '0';
+static const uint8_t kJSONEscapeChar = 'u';
+
+static const std::string kJSONEscapePrefix("\\u00");
+
+static const uint32_t kThriftVersion1 = 1;
+
+static const std::string kThriftNan("NaN");
+static const std::string kThriftInfinity("Infinity");
+static const std::string kThriftNegativeInfinity("-Infinity");
+
+static const std::string kTypeNameBool("tf");
+static const std::string kTypeNameByte("i8");
+static const std::string kTypeNameI16("i16");
+static const std::string kTypeNameI32("i32");
+static const std::string kTypeNameI64("i64");
+static const std::string kTypeNameDouble("dbl");
+static const std::string kTypeNameStruct("rec");
+static const std::string kTypeNameString("str");
+static const std::string kTypeNameMap("map");
+static const std::string kTypeNameList("lst");
+static const std::string kTypeNameSet("set");
+
+static const std::string &getTypeNameForTypeID(TType typeID) {
+ switch (typeID) {
+ case T_BOOL:
+ return kTypeNameBool;
+ case T_BYTE:
+ return kTypeNameByte;
+ case T_I16:
+ return kTypeNameI16;
+ case T_I32:
+ return kTypeNameI32;
+ case T_I64:
+ return kTypeNameI64;
+ case T_DOUBLE:
+ return kTypeNameDouble;
+ case T_STRING:
+ return kTypeNameString;
+ case T_STRUCT:
+ return kTypeNameStruct;
+ case T_MAP:
+ return kTypeNameMap;
+ case T_SET:
+ return kTypeNameSet;
+ case T_LIST:
+ return kTypeNameList;
+ default:
+ throw TProtocolException(TProtocolException::NOT_IMPLEMENTED,
+ "Unrecognized type");
+ }
+}
+
+static TType getTypeIDForTypeName(const std::string &name) {
+ TType result = T_STOP; // Sentinel value
+ if (name.length() > 1) {
+ switch (name[0]) {
+ case 'd':
+ result = T_DOUBLE;
+ break;
+ case 'i':
+ switch (name[1]) {
+ case '8':
+ result = T_BYTE;
+ break;
+ case '1':
+ result = T_I16;
+ break;
+ case '3':
+ result = T_I32;
+ break;
+ case '6':
+ result = T_I64;
+ break;
+ }
+ break;
+ case 'l':
+ result = T_LIST;
+ break;
+ case 'm':
+ result = T_MAP;
+ break;
+ case 'r':
+ result = T_STRUCT;
+ break;
+ case 's':
+ if (name[1] == 't') {
+ result = T_STRING;
+ }
+ else if (name[1] == 'e') {
+ result = T_SET;
+ }
+ break;
+ case 't':
+ result = T_BOOL;
+ break;
+ }
+ }
+ if (result == T_STOP) {
+ throw TProtocolException(TProtocolException::NOT_IMPLEMENTED,
+ "Unrecognized type");
+ }
+ return result;
+}
+
+
+// This table describes the handling for the first 0x30 characters
+// 0 : escape using "\u00xx" notation
+// 1 : just output index
+// <other> : escape using "\<other>" notation
+static const uint8_t kJSONCharTable[0x30] = {
+// 0 1 2 3 4 5 6 7 8 9 A B C D E F
+ 0, 0, 0, 0, 0, 0, 0, 0,'b','t','n', 0,'f','r', 0, 0, // 0
+ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 1
+ 1, 1,'"', 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 2
+};
+
+
+// This string's characters must match up with the elements in kEscapeCharVals.
+// I don't have '/' on this list even though it appears on www.json.org --
+// it is not in the RFC
+const static std::string kEscapeChars("\"\\bfnrt");
+
+// The elements of this array must match up with the sequence of characters in
+// kEscapeChars
+const static uint8_t kEscapeCharVals[7] = {
+ '"', '\\', '\b', '\f', '\n', '\r', '\t',
+};
+
+
+// Static helper functions
+
+// Read 1 character from the transport trans and verify that it is the
+// expected character ch.
+// Throw a protocol exception if it is not.
+static uint32_t readSyntaxChar(TJSONProtocol::LookaheadReader &reader,
+ uint8_t ch) {
+ uint8_t ch2 = reader.read();
+ if (ch2 != ch) {
+ throw TProtocolException(TProtocolException::INVALID_DATA,
+ "Expected \'" + std::string((char *)&ch, 1) +
+ "\'; got \'" + std::string((char *)&ch2, 1) +
+ "\'.");
+ }
+ return 1;
+}
+
+// Return the integer value of a hex character ch.
+// Throw a protocol exception if the character is not [0-9a-f].
+static uint8_t hexVal(uint8_t ch) {
+ if ((ch >= '0') && (ch <= '9')) {
+ return ch - '0';
+ }
+ else if ((ch >= 'a') && (ch <= 'f')) {
+ return ch - 'a';
+ }
+ else {
+ throw TProtocolException(TProtocolException::INVALID_DATA,
+ "Expected hex val ([0-9a-f]); got \'"
+ + std::string((char *)&ch, 1) + "\'.");
+ }
+}
+
+// Return the hex character representing the integer val. The value is masked
+// to make sure it is in the correct range.
+static uint8_t hexChar(uint8_t val) {
+ val &= 0x0F;
+ if (val < 10) {
+ return val + '0';
+ }
+ else {
+ return val + 'a';
+ }
+}
+
+// Return true if the character ch is in [-+0-9.Ee]; false otherwise
+static bool isJSONNumeric(uint8_t ch) {
+ switch (ch) {
+ case '+':
+ case '-':
+ case '.':
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ case 'E':
+ case 'e':
+ return true;
+ }
+ return false;
+}
+
+
+/**
+ * Class to serve as base JSON context and as base class for other context
+ * implementations
+ */
+class TJSONContext {
+
+ public:
+
+ TJSONContext() {};
+
+ virtual ~TJSONContext() {};
+
+ /**
+ * Write context data to the transport. Default is to do nothing.
+ */
+ virtual uint32_t write(TTransport &trans) {
+ return 0;
+ };
+
+ /**
+ * Read context data from the transport. Default is to do nothing.
+ */
+ virtual uint32_t read(TJSONProtocol::LookaheadReader &reader) {
+ return 0;
+ };
+
+ /**
+ * Return true if numbers need to be escaped as strings in this context.
+ * Default behavior is to return false.
+ */
+ virtual bool escapeNum() {
+ return false;
+ }
+};
+
+// Context class for object member key-value pairs
+class JSONPairContext : public TJSONContext {
+
+public:
+
+ JSONPairContext() :
+ first_(true),
+ colon_(true) {
+ }
+
+ uint32_t write(TTransport &trans) {
+ if (first_) {
+ first_ = false;
+ colon_ = true;
+ return 0;
+ }
+ else {
+ trans.write(colon_ ? &kJSONPairSeparator : &kJSONElemSeparator, 1);
+ colon_ = !colon_;
+ return 1;
+ }
+ }
+
+ uint32_t read(TJSONProtocol::LookaheadReader &reader) {
+ if (first_) {
+ first_ = false;
+ colon_ = true;
+ return 0;
+ }
+ else {
+ uint8_t ch = (colon_ ? kJSONPairSeparator : kJSONElemSeparator);
+ colon_ = !colon_;
+ return readSyntaxChar(reader, ch);
+ }
+ }
+
+ // Numbers must be turned into strings if they are the key part of a pair
+ virtual bool escapeNum() {
+ return colon_;
+ }
+
+ private:
+
+ bool first_;
+ bool colon_;
+};
+
+// Context class for lists
+class JSONListContext : public TJSONContext {
+
+public:
+
+ JSONListContext() :
+ first_(true) {
+ }
+
+ uint32_t write(TTransport &trans) {
+ if (first_) {
+ first_ = false;
+ return 0;
+ }
+ else {
+ trans.write(&kJSONElemSeparator, 1);
+ return 1;
+ }
+ }
+
+ uint32_t read(TJSONProtocol::LookaheadReader &reader) {
+ if (first_) {
+ first_ = false;
+ return 0;
+ }
+ else {
+ return readSyntaxChar(reader, kJSONElemSeparator);
+ }
+ }
+
+ private:
+ bool first_;
+};
+
+
+TJSONProtocol::TJSONProtocol(boost::shared_ptr<TTransport> ptrans) :
+ TProtocol(ptrans),
+ context_(new TJSONContext()),
+ reader_(*ptrans) {
+}
+
+TJSONProtocol::~TJSONProtocol() {}
+
+void TJSONProtocol::pushContext(boost::shared_ptr<TJSONContext> c) {
+ contexts_.push(context_);
+ context_ = c;
+}
+
+void TJSONProtocol::popContext() {
+ context_ = contexts_.top();
+ contexts_.pop();
+}
+
+// Write the character ch as a JSON escape sequence ("\u00xx")
+uint32_t TJSONProtocol::writeJSONEscapeChar(uint8_t ch) {
+ trans_->write((const uint8_t *)kJSONEscapePrefix.c_str(),
+ kJSONEscapePrefix.length());
+ uint8_t outCh = hexChar(ch >> 4);
+ trans_->write(&outCh, 1);
+ outCh = hexChar(ch);
+ trans_->write(&outCh, 1);
+ return 6;
+}
+
+// Write the character ch as part of a JSON string, escaping as appropriate.
+uint32_t TJSONProtocol::writeJSONChar(uint8_t ch) {
+ if (ch >= 0x30) {
+ if (ch == kJSONBackslash) { // Only special character >= 0x30 is '\'
+ trans_->write(&kJSONBackslash, 1);
+ trans_->write(&kJSONBackslash, 1);
+ return 2;
+ }
+ else {
+ trans_->write(&ch, 1);
+ return 1;
+ }
+ }
+ else {
+ uint8_t outCh = kJSONCharTable[ch];
+ // Check if regular character, backslash escaped, or JSON escaped
+ if (outCh == 1) {
+ trans_->write(&ch, 1);
+ return 1;
+ }
+ else if (outCh > 1) {
+ trans_->write(&kJSONBackslash, 1);
+ trans_->write(&outCh, 1);
+ return 2;
+ }
+ else {
+ return writeJSONEscapeChar(ch);
+ }
+ }
+}
+
+// Write out the contents of the string str as a JSON string, escaping
+// characters as appropriate.
+uint32_t TJSONProtocol::writeJSONString(const std::string &str) {
+ uint32_t result = context_->write(*trans_);
+ result += 2; // For quotes
+ trans_->write(&kJSONStringDelimiter, 1);
+ std::string::const_iterator iter(str.begin());
+ std::string::const_iterator end(str.end());
+ while (iter != end) {
+ result += writeJSONChar(*iter++);
+ }
+ trans_->write(&kJSONStringDelimiter, 1);
+ return result;
+}
+
+// Write out the contents of the string as JSON string, base64-encoding
+// the string's contents, and escaping as appropriate
+uint32_t TJSONProtocol::writeJSONBase64(const std::string &str) {
+ uint32_t result = context_->write(*trans_);
+ result += 2; // For quotes
+ trans_->write(&kJSONStringDelimiter, 1);
+ uint8_t b[4];
+ const uint8_t *bytes = (const uint8_t *)str.c_str();
+ uint32_t len = str.length();
+ while (len >= 3) {
+ // Encode 3 bytes at a time
+ base64_encode(bytes, 3, b);
+ trans_->write(b, 4);
+ result += 4;
+ bytes += 3;
+ len -=3;
+ }
+ if (len) { // Handle remainder
+ base64_encode(bytes, len, b);
+ trans_->write(b, len + 1);
+ result += len + 1;
+ }
+ trans_->write(&kJSONStringDelimiter, 1);
+ return result;
+}
+
+// Convert the given integer type to a JSON number, or a string
+// if the context requires it (eg: key in a map pair).
+template <typename NumberType>
+uint32_t TJSONProtocol::writeJSONInteger(NumberType num) {
+ uint32_t result = context_->write(*trans_);
+ std::string val(boost::lexical_cast<std::string>(num));
+ bool escapeNum = context_->escapeNum();
+ if (escapeNum) {
+ trans_->write(&kJSONStringDelimiter, 1);
+ result += 1;
+ }
+ trans_->write((const uint8_t *)val.c_str(), val.length());
+ result += val.length();
+ if (escapeNum) {
+ trans_->write(&kJSONStringDelimiter, 1);
+ result += 1;
+ }
+ return result;
+}
+
+// Convert the given double to a JSON string, which is either the number,
+// "NaN" or "Infinity" or "-Infinity".
+uint32_t TJSONProtocol::writeJSONDouble(double num) {
+ uint32_t result = context_->write(*trans_);
+ std::string val(boost::lexical_cast<std::string>(num));
+
+ // Normalize output of boost::lexical_cast for NaNs and Infinities
+ bool special = false;
+ switch (val[0]) {
+ case 'N':
+ case 'n':
+ val = kThriftNan;
+ special = true;
+ break;
+ case 'I':
+ case 'i':
+ val = kThriftInfinity;
+ special = true;
+ break;
+ case '-':
+ if ((val[1] == 'I') || (val[1] == 'i')) {
+ val = kThriftNegativeInfinity;
+ special = true;
+ }
+ break;
+ }
+
+ bool escapeNum = special || context_->escapeNum();
+ if (escapeNum) {
+ trans_->write(&kJSONStringDelimiter, 1);
+ result += 1;
+ }
+ trans_->write((const uint8_t *)val.c_str(), val.length());
+ result += val.length();
+ if (escapeNum) {
+ trans_->write(&kJSONStringDelimiter, 1);
+ result += 1;
+ }
+ return result;
+}
+
+uint32_t TJSONProtocol::writeJSONObjectStart() {
+ uint32_t result = context_->write(*trans_);
+ trans_->write(&kJSONObjectStart, 1);
+ pushContext(boost::shared_ptr<TJSONContext>(new JSONPairContext()));
+ return result + 1;
+}
+
+uint32_t TJSONProtocol::writeJSONObjectEnd() {
+ popContext();
+ trans_->write(&kJSONObjectEnd, 1);
+ return 1;
+}
+
+uint32_t TJSONProtocol::writeJSONArrayStart() {
+ uint32_t result = context_->write(*trans_);
+ trans_->write(&kJSONArrayStart, 1);
+ pushContext(boost::shared_ptr<TJSONContext>(new JSONListContext()));
+ return result + 1;
+}
+
+uint32_t TJSONProtocol::writeJSONArrayEnd() {
+ popContext();
+ trans_->write(&kJSONArrayEnd, 1);
+ return 1;
+}
+
+uint32_t TJSONProtocol::writeMessageBegin(const std::string& name,
+ const TMessageType messageType,
+ const int32_t seqid) {
+ uint32_t result = writeJSONArrayStart();
+ result += writeJSONInteger(kThriftVersion1);
+ result += writeJSONString(name);
+ result += writeJSONInteger(messageType);
+ result += writeJSONInteger(seqid);
+ return result;
+}
+
+uint32_t TJSONProtocol::writeMessageEnd() {
+ return writeJSONArrayEnd();
+}
+
+uint32_t TJSONProtocol::writeStructBegin(const char* name) {
+ return writeJSONObjectStart();
+}
+
+uint32_t TJSONProtocol::writeStructEnd() {
+ return writeJSONObjectEnd();
+}
+
+uint32_t TJSONProtocol::writeFieldBegin(const char* name,
+ const TType fieldType,
+ const int16_t fieldId) {
+ uint32_t result = writeJSONInteger(fieldId);
+ result += writeJSONObjectStart();
+ result += writeJSONString(getTypeNameForTypeID(fieldType));
+ return result;
+}
+
+uint32_t TJSONProtocol::writeFieldEnd() {
+ return writeJSONObjectEnd();
+}
+
+uint32_t TJSONProtocol::writeFieldStop() {
+ return 0;
+}
+
+uint32_t TJSONProtocol::writeMapBegin(const TType keyType,
+ const TType valType,
+ const uint32_t size) {
+ uint32_t result = writeJSONArrayStart();
+ result += writeJSONString(getTypeNameForTypeID(keyType));
+ result += writeJSONString(getTypeNameForTypeID(valType));
+ result += writeJSONInteger((int64_t)size);
+ result += writeJSONObjectStart();
+ return result;
+}
+
+uint32_t TJSONProtocol::writeMapEnd() {
+ return writeJSONObjectEnd() + writeJSONArrayEnd();
+}
+
+uint32_t TJSONProtocol::writeListBegin(const TType elemType,
+ const uint32_t size) {
+ uint32_t result = writeJSONArrayStart();
+ result += writeJSONString(getTypeNameForTypeID(elemType));
+ result += writeJSONInteger((int64_t)size);
+ return result;
+}
+
+uint32_t TJSONProtocol::writeListEnd() {
+ return writeJSONArrayEnd();
+}
+
+uint32_t TJSONProtocol::writeSetBegin(const TType elemType,
+ const uint32_t size) {
+ uint32_t result = writeJSONArrayStart();
+ result += writeJSONString(getTypeNameForTypeID(elemType));
+ result += writeJSONInteger((int64_t)size);
+ return result;
+}
+
+uint32_t TJSONProtocol::writeSetEnd() {
+ return writeJSONArrayEnd();
+}
+
+uint32_t TJSONProtocol::writeBool(const bool value) {
+ return writeJSONInteger(value);
+}
+
+uint32_t TJSONProtocol::writeByte(const int8_t byte) {
+ // writeByte() must be handled specially becuase boost::lexical cast sees
+ // int8_t as a text type instead of an integer type
+ return writeJSONInteger((int16_t)byte);
+}
+
+uint32_t TJSONProtocol::writeI16(const int16_t i16) {
+ return writeJSONInteger(i16);
+}
+
+uint32_t TJSONProtocol::writeI32(const int32_t i32) {
+ return writeJSONInteger(i32);
+}
+
+uint32_t TJSONProtocol::writeI64(const int64_t i64) {
+ return writeJSONInteger(i64);
+}
+
+uint32_t TJSONProtocol::writeDouble(const double dub) {
+ return writeJSONDouble(dub);
+}
+
+uint32_t TJSONProtocol::writeString(const std::string& str) {
+ return writeJSONString(str);
+}
+
+uint32_t TJSONProtocol::writeBinary(const std::string& str) {
+ return writeJSONBase64(str);
+}
+
+ /**
+ * Reading functions
+ */
+
+// Reads 1 byte and verifies that it matches ch.
+uint32_t TJSONProtocol::readJSONSyntaxChar(uint8_t ch) {
+ return readSyntaxChar(reader_, ch);
+}
+
+// Decodes the four hex parts of a JSON escaped string character and returns
+// the character via out. The first two characters must be "00".
+uint32_t TJSONProtocol::readJSONEscapeChar(uint8_t *out) {
+ uint8_t b[2];
+ readJSONSyntaxChar(kJSONZeroChar);
+ readJSONSyntaxChar(kJSONZeroChar);
+ b[0] = reader_.read();
+ b[1] = reader_.read();
+ *out = (hexVal(b[0]) << 4) + hexVal(b[1]);
+ return 4;
+}
+
+// Decodes a JSON string, including unescaping, and returns the string via str
+uint32_t TJSONProtocol::readJSONString(std::string &str, bool skipContext) {
+ uint32_t result = (skipContext ? 0 : context_->read(reader_));
+ result += readJSONSyntaxChar(kJSONStringDelimiter);
+ uint8_t ch;
+ str.clear();
+ while (true) {
+ ch = reader_.read();
+ ++result;
+ if (ch == kJSONStringDelimiter) {
+ break;
+ }
+ if (ch == kJSONBackslash) {
+ ch = reader_.read();
+ ++result;
+ if (ch == kJSONEscapeChar) {
+ result += readJSONEscapeChar(&ch);
+ }
+ else {
+ size_t pos = kEscapeChars.find(ch);
+ if (pos == std::string::npos) {
+ throw TProtocolException(TProtocolException::INVALID_DATA,
+ "Expected control char, got '" +
+ std::string((const char *)&ch, 1) + "'.");
+ }
+ ch = kEscapeCharVals[pos];
+ }
+ }
+ str += ch;
+ }
+ return result;
+}
+
+// Reads a block of base64 characters, decoding it, and returns via str
+uint32_t TJSONProtocol::readJSONBase64(std::string &str) {
+ std::string tmp;
+ uint32_t result = readJSONString(tmp);
+ uint8_t *b = (uint8_t *)tmp.c_str();
+ uint32_t len = tmp.length();
+ str.clear();
+ while (len >= 4) {
+ base64_decode(b, 4);
+ str.append((const char *)b, 3);
+ b += 4;
+ len -= 4;
+ }
+ // Don't decode if we hit the end or got a single leftover byte (invalid
+ // base64 but legal for skip of regular string type)
+ if (len > 1) {
+ base64_decode(b, len);
+ str.append((const char *)b, len - 1);
+ }
+ return result;
+}
+
+// Reads a sequence of characters, stopping at the first one that is not
+// a valid JSON numeric character.
+uint32_t TJSONProtocol::readJSONNumericChars(std::string &str) {
+ uint32_t result = 0;
+ str.clear();
+ while (true) {
+ uint8_t ch = reader_.peek();
+ if (!isJSONNumeric(ch)) {
+ break;
+ }
+ reader_.read();
+ str += ch;
+ ++result;
+ }
+ return result;
+}
+
+// Reads a sequence of characters and assembles them into a number,
+// returning them via num
+template <typename NumberType>
+uint32_t TJSONProtocol::readJSONInteger(NumberType &num) {
+ uint32_t result = context_->read(reader_);
+ if (context_->escapeNum()) {
+ result += readJSONSyntaxChar(kJSONStringDelimiter);
+ }
+ std::string str;
+ result += readJSONNumericChars(str);
+ try {
+ num = boost::lexical_cast<NumberType>(str);
+ }
+ catch (boost::bad_lexical_cast e) {
+ throw new TProtocolException(TProtocolException::INVALID_DATA,
+ "Expected numeric value; got \"" + str +
+ "\"");
+ }
+ if (context_->escapeNum()) {
+ result += readJSONSyntaxChar(kJSONStringDelimiter);
+ }
+ return result;
+}
+
+// Reads a JSON number or string and interprets it as a double.
+uint32_t TJSONProtocol::readJSONDouble(double &num) {
+ uint32_t result = context_->read(reader_);
+ std::string str;
+ if (reader_.peek() == kJSONStringDelimiter) {
+ result += readJSONString(str, true);
+ // Check for NaN, Infinity and -Infinity
+ if (str == kThriftNan) {
+ num = HUGE_VAL/HUGE_VAL; // generates NaN
+ }
+ else if (str == kThriftInfinity) {
+ num = HUGE_VAL;
+ }
+ else if (str == kThriftNegativeInfinity) {
+ num = -HUGE_VAL;
+ }
+ else {
+ if (!context_->escapeNum()) {
+ // Throw exception -- we should not be in a string in this case
+ throw new TProtocolException(TProtocolException::INVALID_DATA,
+ "Numeric data unexpectedly quoted");
+ }
+ try {
+ num = boost::lexical_cast<double>(str);
+ }
+ catch (boost::bad_lexical_cast e) {
+ throw new TProtocolException(TProtocolException::INVALID_DATA,
+ "Expected numeric value; got \"" + str +
+ "\"");
+ }
+ }
+ }
+ else {
+ if (context_->escapeNum()) {
+ // This will throw - we should have had a quote if escapeNum == true
+ readJSONSyntaxChar(kJSONStringDelimiter);
+ }
+ result += readJSONNumericChars(str);
+ try {
+ num = boost::lexical_cast<double>(str);
+ }
+ catch (boost::bad_lexical_cast e) {
+ throw new TProtocolException(TProtocolException::INVALID_DATA,
+ "Expected numeric value; got \"" + str +
+ "\"");
+ }
+ }
+ return result;
+}
+
+uint32_t TJSONProtocol::readJSONObjectStart() {
+ uint32_t result = context_->read(reader_);
+ result += readJSONSyntaxChar(kJSONObjectStart);
+ pushContext(boost::shared_ptr<TJSONContext>(new JSONPairContext()));
+ return result;
+}
+
+uint32_t TJSONProtocol::readJSONObjectEnd() {
+ uint32_t result = readJSONSyntaxChar(kJSONObjectEnd);
+ popContext();
+ return result;
+}
+
+uint32_t TJSONProtocol::readJSONArrayStart() {
+ uint32_t result = context_->read(reader_);
+ result += readJSONSyntaxChar(kJSONArrayStart);
+ pushContext(boost::shared_ptr<TJSONContext>(new JSONListContext()));
+ return result;
+}
+
+uint32_t TJSONProtocol::readJSONArrayEnd() {
+ uint32_t result = readJSONSyntaxChar(kJSONArrayEnd);
+ popContext();
+ return result;
+}
+
+uint32_t TJSONProtocol::readMessageBegin(std::string& name,
+ TMessageType& messageType,
+ int32_t& seqid) {
+ uint32_t result = readJSONArrayStart();
+ uint64_t tmpVal = 0;
+ result += readJSONInteger(tmpVal);
+ if (tmpVal != kThriftVersion1) {
+ throw TProtocolException(TProtocolException::BAD_VERSION,
+ "Message contained bad version.");
+ }
+ result += readJSONString(name);
+ result += readJSONInteger(tmpVal);
+ messageType = (TMessageType)tmpVal;
+ result += readJSONInteger(tmpVal);
+ seqid = tmpVal;
+ return result;
+}
+
+uint32_t TJSONProtocol::readMessageEnd() {
+ return readJSONArrayEnd();
+}
+
+uint32_t TJSONProtocol::readStructBegin(std::string& name) {
+ return readJSONObjectStart();
+}
+
+uint32_t TJSONProtocol::readStructEnd() {
+ return readJSONObjectEnd();
+}
+
+uint32_t TJSONProtocol::readFieldBegin(std::string& name,
+ TType& fieldType,
+ int16_t& fieldId) {
+ uint32_t result = 0;
+ // Check if we hit the end of the list
+ uint8_t ch = reader_.peek();
+ if (ch == kJSONObjectEnd) {
+ fieldType = apache::thrift::protocol::T_STOP;
+ }
+ else {
+ uint64_t tmpVal = 0;
+ std::string tmpStr;
+ result += readJSONInteger(tmpVal);
+ fieldId = tmpVal;
+ result += readJSONObjectStart();
+ result += readJSONString(tmpStr);
+ fieldType = getTypeIDForTypeName(tmpStr);
+ }
+ return result;
+}
+
+uint32_t TJSONProtocol::readFieldEnd() {
+ return readJSONObjectEnd();
+}
+
+uint32_t TJSONProtocol::readMapBegin(TType& keyType,
+ TType& valType,
+ uint32_t& size) {
+ uint64_t tmpVal = 0;
+ std::string tmpStr;
+ uint32_t result = readJSONArrayStart();
+ result += readJSONString(tmpStr);
+ keyType = getTypeIDForTypeName(tmpStr);
+ result += readJSONString(tmpStr);
+ valType = getTypeIDForTypeName(tmpStr);
+ result += readJSONInteger(tmpVal);
+ size = tmpVal;
+ result += readJSONObjectStart();
+ return result;
+}
+
+uint32_t TJSONProtocol::readMapEnd() {
+ return readJSONObjectEnd() + readJSONArrayEnd();
+}
+
+uint32_t TJSONProtocol::readListBegin(TType& elemType,
+ uint32_t& size) {
+ uint64_t tmpVal = 0;
+ std::string tmpStr;
+ uint32_t result = readJSONArrayStart();
+ result += readJSONString(tmpStr);
+ elemType = getTypeIDForTypeName(tmpStr);
+ result += readJSONInteger(tmpVal);
+ size = tmpVal;
+ return result;
+}
+
+uint32_t TJSONProtocol::readListEnd() {
+ return readJSONArrayEnd();
+}
+
+uint32_t TJSONProtocol::readSetBegin(TType& elemType,
+ uint32_t& size) {
+ uint64_t tmpVal = 0;
+ std::string tmpStr;
+ uint32_t result = readJSONArrayStart();
+ result += readJSONString(tmpStr);
+ elemType = getTypeIDForTypeName(tmpStr);
+ result += readJSONInteger(tmpVal);
+ size = tmpVal;
+ return result;
+}
+
+uint32_t TJSONProtocol::readSetEnd() {
+ return readJSONArrayEnd();
+}
+
+uint32_t TJSONProtocol::readBool(bool& value) {
+ return readJSONInteger(value);
+}
+
+// readByte() must be handled properly becuase boost::lexical cast sees int8_t
+// as a text type instead of an integer type
+uint32_t TJSONProtocol::readByte(int8_t& byte) {
+ int16_t tmp = (int16_t) byte;
+ uint32_t result = readJSONInteger(tmp);
+ assert(tmp < 256);
+ byte = (int8_t)tmp;
+ return result;
+}
+
+uint32_t TJSONProtocol::readI16(int16_t& i16) {
+ return readJSONInteger(i16);
+}
+
+uint32_t TJSONProtocol::readI32(int32_t& i32) {
+ return readJSONInteger(i32);
+}
+
+uint32_t TJSONProtocol::readI64(int64_t& i64) {
+ return readJSONInteger(i64);
+}
+
+uint32_t TJSONProtocol::readDouble(double& dub) {
+ return readJSONDouble(dub);
+}
+
+uint32_t TJSONProtocol::readString(std::string &str) {
+ return readJSONString(str);
+}
+
+uint32_t TJSONProtocol::readBinary(std::string &str) {
+ return readJSONBase64(str);
+}
+
+}}} // apache::thrift::protocol