1 //=== JSON.cpp - JSON value, parsing and serialization - C++ -----------*-===//
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===---------------------------------------------------------------------===//
25   return try_emplace(K, nullptr).first->getSecond();  in operator []()
28   return try_emplace(std::move(K), nullptr).first->getSecond();  in operator []()
34   return &I->second;  in get()
40   return &I->second;  in get()
44     return V->getAsNull();  in getNull()
49     return V->getAsBoolean();  in getBoolean()
52 std::optional<double> Object::getNumber(StringRef K) const {  in getNumber()
54     return V->getAsNumber();  in getNumber()
59     return V->getAsInteger();  in getInteger()
64     return V->getAsString();  in getString()
69     return V->getAsObject();  in getObject()
74     return V->getAsObject();  in getObject()
79     return V->getAsArray();  in getArray()
84     return V->getAsArray();  in getArray()
92     if (R == RHS.end() || L.second != R->second)  in operator ==()
195     // The same integer must convert to the same double, per the standard.  in operator ==()
196     // However we see 64-vs-80-bit precision comparisons with gcc-7 -O3 -m32.  in operator ==()
215   for (P = this; P->Parent != nullptr; P = P->Parent)  in report()
217   Path::Root *R = P->Seg.root();  in report()
219   R->ErrorMessage = Msg;  in report()
220   R->ErrorPath.resize(Count);  in report()
221   auto It = R->ErrorPath.begin();  in report()
222   for (P = this; P->Parent != nullptr; P = P->Parent)  in report()
223     *It++ = P->Seg;  in report()
251                return L->first < R->first;  in sortedElements()
256 // Prints a one-line version of a value that isn't our main focus.
257 // We interleave writes to OS and JOS, exploiting the lack of extra buffering.
262     JOS.rawValue(V.getAsArray()->empty() ? "[]" : "[ ... ]");  in abbreviate()
265     JOS.rawValue(V.getAsObject()->empty() ? "{}" : "{ ... }");  in abbreviate()
283 // Prints a semi-expanded version of a value that is our main focus.
296         JOS.attributeBegin(KV->first);  in abbreviateChildren()
297         abbreviate(KV->second, JOS);  in abbreviateChildren()
330       if (!O || !O->get(FieldName))  in printErrorContext()
334           JOS.attributeBegin(KV->first);  in printErrorContext()
335           if (FieldName == StringRef(KV->first))  in printErrorContext()
336             Recurse(KV->second, Path.drop_back(), Recurse);  in printErrorContext()
338             abbreviate(KV->second, JOS);  in printErrorContext()
345       if (!A || S.index() >= A->size())  in printErrorContext()
362 // Simple recursive-descent JSON parser.
370     if (isUTF8(StringRef(Start, End - Start), &ErrOffset))  in checkUTF8()
373     return parseError("Invalid UTF-8 sequence");  in checkUTF8()
407            C == 'e' || C == 'E' || C == '+' || C == '-' || C == '.';  in isNumber()
420   // Bare null/true/false are easy - first char identifies them.  in parseValue()
505   // Read the number into a string. (Must be null-terminated for strto*).  in parseNumber()
523   if (First != '-') {  in parseNumber()
609 // Parse a UTF-16 \uNNNN escape sequence. "\u" has already been consumed.
615   auto Invalid = [&] { Out.append(/* UTF-8 */ {'\xef', '\xbf', '\xbd'}); };  in parseUnicode()
617   auto Parse4Hex = [this](uint16_t &Out) -> bool {  in parseUnicode()
624       Out |= (C > '9') ? (C & ~0x20) - 'A' + 10 : (C - '0');  in parseUnicode()
628   uint16_t First; // UTF-16 code unit from the first \u escape.  in parseUnicode()
632   // We loop to allow proper surrogate-pair error handling.  in parseUnicode()
634     // Case 1: the UTF-16 code unit is already a codepoint in the BMP.  in parseUnicode()
663     encodeUtf8(0x10000 | ((First - 0xD800) << 10) | (Second - 0xDC00), Out);  in parseUnicode()
678       std::make_unique<ParseError>(Msg, Line, P - StartOfLine, P - Start));  in parseError()
694   // Fast-path for ASCII, which is valid UTF-8.  in isUTF8()
703     *ErrOffset = Rest - Data;  in isUTF8()
708   // This isn't particularly efficient, but is only for error-recovery.  in fixUTF8()
714   Codepoints.resize(Out32 - Codepoints.data());  in fixUTF8()
720   Res.resize(reinterpret_cast<char *>(Out8) - Res.data());  in fixUTF8()
771       OS << format("%.*g", std::numeric_limits<double>::max_digits10,  in value()
786         attribute(E->first, E->second);  in value()
850   Indent -= IndentSize;  in arrayEnd()
869   Indent -= IndentSize;  in objectEnd()
890     assert(false && "Invalid UTF-8 in attribute key");  in attributeBegin()