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Cleanup Reader code

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git-svn-id: https://rapidjson.googlecode.com/svn/trunk@34 c5894555-1306-4e8d-425f-1f6f381ee07c
This commit is contained in:
miloyip@gmail.com 2011-11-23 16:32:15 +00:00
parent 77ce51209f
commit 827de60fb8
1 changed files with 27 additions and 69 deletions
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94
include/rapidjson/reader.h
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@ -226,7 +226,7 @@ public:
switch (stream.Peek()) {
case '{': ParseObject<parseFlags>(stream, handler); break;
case '[': ParseArray<parseFlags>(stream, handler); break;
default: RAPIDJSON_PARSE_ERROR("Expect either an object or array at root", stream.Tell()); return false;
default: RAPIDJSON_PARSE_ERROR("Expect either an object or array at root", stream.Tell());
}
SkipWhitespace(stream);
@ -257,18 +257,15 @@ private:
}
for (SizeType memberCount = 0;;) {
if (stream.Peek() != '"') {
if (stream.Peek() != '"')
RAPIDJSON_PARSE_ERROR("Name of an object member must be a string", stream.Tell());
break;
}
ParseString<parseFlags>(stream, handler);
SkipWhitespace(stream);
if (stream.Take() != ':') {
if (stream.Take() != ':')
RAPIDJSON_PARSE_ERROR("There must be a colon after the name of object member", stream.Tell());
break;
}
SkipWhitespace(stream);
ParseValue<parseFlags>(stream, handler);
@ -359,10 +356,8 @@ private:
codepoint -= 'A' - 10;
else if (c >= 'a' && c <= 'f')
codepoint -= 'a' - 10;
else {
else
RAPIDJSON_PARSE_ERROR("Incorrect hex digit after \\u escape", s.Tell() - 1);
return 0;
}
}
stream = s; // Restore stream
return codepoint;
@ -382,7 +377,7 @@ private:
template<unsigned parseFlags, typename Stream, typename Handler>
void ParseString(Stream& stream, Handler& handler) {
#define Z16 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
static const Ch escape[256] = {
static const char escape[256] = {
Z16, Z16, 0, 0,'\"', 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,'/',
Z16, Z16, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,'\\', 0, 0, 0,
0, 0,'\b', 0, 0, 0,'\f', 0, 0, 0, 0, 0, 0, 0,'\n', 0,
@ -394,22 +389,16 @@ private:
Stream s = stream; // Use a local copy for optimization
RAPIDJSON_ASSERT(s.Peek() == '\"');
s.Take(); // Skip '\"'
// With kParseInsituFlag
Ch *head;
SizeType len;
if (parseFlags & kParseInsituFlag)
head = s.PutBegin();
else
len = 0;
// Without kParseInsituFlag
StackStream stackStream(stack_);
#define RAPIDJSON_PUT(x) \
do { \
if (parseFlags & kParseInsituFlag) \
s.Put(x); \
else { \
stackStream.Put(x); \
} \
} while(false)
#define RAPIDJSON_PUT(x) (parseFlags & kParseInsituFlag ? s.Put(x) : stackStream.Put(x))
for (;;) {
Ch c = s.Peek();
@ -420,16 +409,13 @@ private:
RAPIDJSON_PUT(escape[(unsigned char)e]);
else if (e == 'u') { // Unicode
unsigned codepoint = ParseHex4(s);
if (codepoint >= 0xD800 && codepoint <= 0xDBFF) { // Handle UTF-16 surrogate pair
if (s.Take() != '\\' || s.Take() != 'u') {
if (codepoint >= 0xD800 && codepoint <= 0xDBFF) {
// Handle UTF-16 surrogate pair
if (s.Take() != '\\' || s.Take() != 'u')
RAPIDJSON_PARSE_ERROR("Missing the second \\u in surrogate pair", s.Tell() - 2);
return;
}
unsigned codepoint2 = ParseHex4(s);
if (codepoint2 < 0xDC00 || codepoint2 > 0xDFFF) {
if (codepoint2 < 0xDC00 || codepoint2 > 0xDFFF)
RAPIDJSON_PARSE_ERROR("The second \\u in surrogate pair is invalid", s.Tell() - 2);
return;
}
codepoint = (((codepoint - 0xD800) << 10) | (codepoint2 - 0xDC00)) + 0x10000;
}
@ -438,10 +424,8 @@ private:
else
Encoding::Encode(stackStream, codepoint);
}
else {
else
RAPIDJSON_PARSE_ERROR("Unknown escape character", stream.Tell() - 1);
return;
}
}
else if (c == '"') { // Closing double quote
s.Take();
@ -458,32 +442,16 @@ private:
stream = s; // restore stream
return;
}
else if (c == '\0') {
else if (c == '\0')
RAPIDJSON_PARSE_ERROR("lacks ending quotation before the end of string", stream.Tell() - 1);
return;
}
else if ((unsigned)c < 0x20) { // RFC 4627: unescaped = %x20-21 / %x23-5B / %x5D-10FFFF
else if ((unsigned)c < 0x20) // RFC 4627: unescaped = %x20-21 / %x23-5B / %x5D-10FFFF
RAPIDJSON_PARSE_ERROR("Incorrect unescaped character in string", stream.Tell() - 1);
return;
}
else if (parseFlags & kParseValidateEncodingFlag) {
if (parseFlags & kParseInsituFlag) {
if (!Encoding::Validate(s, s)) {
RAPIDJSON_PARSE_ERROR("Invalid encoding", s.Tell());
return;
}
}
else
{
if (!Encoding::Validate(s, stackStream)) {
RAPIDJSON_PARSE_ERROR("Invalid encoding", s.Tell());
return;
}
}
if ((parseFlags & kParseInsituFlag) ? !Encoding::Validate(s, s) : !Encoding::Validate(s, stackStream))
RAPIDJSON_PARSE_ERROR("Invalid encoding", s.Tell());
}
else {
else
RAPIDJSON_PUT(s.Take()); // Normal character, just copy
}
}
#undef RAPIDJSON_PUT
}
@ -529,10 +497,8 @@ private:
i = i * 10 + (s.Take() - '0');
}
}
else {
else
RAPIDJSON_PARSE_ERROR("Expect a value here.", stream.Tell());
return;
}
// Parse 64bit int
uint64_t i64;
@ -564,10 +530,8 @@ private:
if (useDouble) {
d = (double)i64;
while (s.Peek() >= '0' && s.Peek() <= '9') {
if (d >= 1E307) {
if (d >= 1E307)
RAPIDJSON_PARSE_ERROR("Number too big to store in double", stream.Tell());
return;
}
d = d * 10 + (s.Take() - '0');
}
}
@ -585,10 +549,8 @@ private:
d = d * 10 + (s.Take() - '0');
--expFrac;
}
else {
else
RAPIDJSON_PARSE_ERROR("At least one digit in fraction part", stream.Tell());
return;
}
while (s.Peek() >= '0' && s.Peek() <= '9') {
if (expFrac > -16) {
@ -620,16 +582,12 @@ private:
exp = s.Take() - '0';
while (s.Peek() >= '0' && s.Peek() <= '9') {
exp = exp * 10 + (s.Take() - '0');
if (exp > 308) {
if (exp > 308)
RAPIDJSON_PARSE_ERROR("Number too big to store in double", stream.Tell());
return;
}
}
}
else {
else
RAPIDJSON_PARSE_ERROR("At least one digit in exponent", s.Tell());
return;
}
if (expMinus)
exp = -exp;