/bitcoin/src/univalue/lib/univalue_read.cpp

Source
// Copyright 2014 BitPay Inc.
// Distributed under the MIT software license, see the accompanying
// file COPYING or https://opensource.org/licenses/mit-license.php.

#include <univalue.h>
#include <univalue_utffilter.h>

#include <cstdint>
#include <cstring>
#include <string>
#include <string_view>
#include <vector>

/*
 * According to stackexchange, the original json test suite wanted
 * to limit depth to 22.  Widely-deployed PHP bails at depth 512,
 * so we will follow PHP's lead, which should be more than sufficient
 * (further stackexchange comments indicate depth > 32 rarely occurs).
 */
static constexpr size_t MAX_JSON_DEPTH = 512;

static bool json_isdigit(int ch)
{
    return ((ch >= '0') && (ch <= '9'));
}

// convert hexadecimal string to unsigned integer
static const char *hatoui(const char *first, const char *last,
                          unsigned int& out)
{
    unsigned int result = 0;
    for (; first != last; ++first)
    {
        int digit;
        if (json_isdigit(*first))
            digit = *first - '0';

        else if (*first >= 'a' && *first <= 'f')
            digit = *first - 'a' + 10;

        else if (*first >= 'A' && *first <= 'F')
            digit = *first - 'A' + 10;

        else
            break;

        result = 16 * result + digit;
    }
    out = result;

    return first;
}

enum jtokentype getJsonToken(std::string& tokenVal, unsigned int& consumed,
                            const char *raw, const char *end)
{
    tokenVal.clear();
    consumed = 0;

    const char *rawStart = raw;

    while (raw < end && (json_isspace(*raw)))          // skip whitespace
        raw++;

    if (raw >= end)
        return JTOK_NONE;

    switch (*raw) {

    case '{':
        raw++;
        consumed = (raw - rawStart);
        return JTOK_OBJ_OPEN;
    case '}':
        raw++;
        consumed = (raw - rawStart);
        return JTOK_OBJ_CLOSE;
    case '[':
        raw++;
        consumed = (raw - rawStart);
        return JTOK_ARR_OPEN;
    case ']':
        raw++;
        consumed = (raw - rawStart);
        return JTOK_ARR_CLOSE;

    case ':':
        raw++;
        consumed = (raw - rawStart);
        return JTOK_COLON;
    case ',':
        raw++;
        consumed = (raw - rawStart);
        return JTOK_COMMA;

    case 'n':
    case 't':
    case 'f':
        if (!strncmp(raw, "null", 4)) {
            raw += 4;
            consumed = (raw - rawStart);
            return JTOK_KW_NULL;
        } else if (!strncmp(raw, "true", 4)) {
            raw += 4;
            consumed = (raw - rawStart);
            return JTOK_KW_TRUE;
        } else if (!strncmp(raw, "false", 5)) {
            raw += 5;
            consumed = (raw - rawStart);
            return JTOK_KW_FALSE;
        } else
            return JTOK_ERR;

    case '-':
    case '0':
    case '1':
    case '2':
    case '3':
    case '4':
    case '5':
    case '6':
    case '7':
    case '8':
    case '9': {
        // part 1: int
        std::string numStr;

        const char *first = raw;

        const char *firstDigit = first;
        if (!json_isdigit(*firstDigit))
            firstDigit++;
        if ((*firstDigit == '0') && json_isdigit(firstDigit[1]))
            return JTOK_ERR;

        numStr += *raw;                       // copy first char
        raw++;

        if ((*first == '-') && (raw < end) && (!json_isdigit(*raw)))
            return JTOK_ERR;

        while (raw < end && json_isdigit(*raw)) {  // copy digits
            numStr += *raw;
            raw++;
        }

        // part 2: frac
        if (raw < end && *raw == '.') {
            numStr += *raw;                   // copy .
            raw++;

            if (raw >= end || !json_isdigit(*raw))
                return JTOK_ERR;
            while (raw < end && json_isdigit(*raw)) { // copy digits
                numStr += *raw;
                raw++;
            }
        }

        // part 3: exp
        if (raw < end && (*raw == 'e' || *raw == 'E')) {
            numStr += *raw;                   // copy E
            raw++;

            if (raw < end && (*raw == '-' || *raw == '+')) { // copy +/-
                numStr += *raw;
                raw++;
            }

            if (raw >= end || !json_isdigit(*raw))
                return JTOK_ERR;
            while (raw < end && json_isdigit(*raw)) { // copy digits
                numStr += *raw;
                raw++;
            }
        }

        tokenVal = numStr;
        consumed = (raw - rawStart);
        return JTOK_NUMBER;
        }

    case '"': {
        raw++;                                // skip "

        std::string valStr;
        JSONUTF8StringFilter writer(valStr);

        while (true) {
            if (raw >= end || (unsigned char)*raw < 0x20)
                return JTOK_ERR;

            else if (*raw == '\\') {
                raw++;                        // skip backslash

                if (raw >= end)
                    return JTOK_ERR;

                switch (*raw) {
                case '"':  writer.push_back('\"'); break;
                case '\\': writer.push_back('\\'); break;
                case '/':  writer.push_back('/'); break;
                case 'b':  writer.push_back('\b'); break;
                case 'f':  writer.push_back('\f'); break;
                case 'n':  writer.push_back('\n'); break;
                case 'r':  writer.push_back('\r'); break;
                case 't':  writer.push_back('\t'); break;

                case 'u': {
                    unsigned int codepoint;
                    if (raw + 1 + 4 >= end ||
                        hatoui(raw + 1, raw + 1 + 4, codepoint) !=
                               raw + 1 + 4)
                        return JTOK_ERR;
                    writer.push_back_u(codepoint);
                    raw += 4;
                    break;
                    }
                default:
                    return JTOK_ERR;

                }

                raw++;                        // skip esc'd char
            }

            else if (*raw == '"') {
                raw++;                        // skip "
                break;                        // stop scanning
            }

            else {
                writer.push_back(static_cast<unsigned char>(*raw));
                raw++;
            }
        }

        if (!writer.finalize())
            return JTOK_ERR;
        tokenVal = valStr;
        consumed = (raw - rawStart);
        return JTOK_STRING;
        }

    default:
        return JTOK_ERR;
    }
}

enum expect_bits : unsigned {
    EXP_OBJ_NAME = (1U << 0),
    EXP_COLON = (1U << 1),
    EXP_ARR_VALUE = (1U << 2),
    EXP_VALUE = (1U << 3),
    EXP_NOT_VALUE = (1U << 4),
};

#define expect(bit) (expectMask & (EXP_##bit))
#define setExpect(bit) (expectMask |= EXP_##bit)
#define clearExpect(bit) (expectMask &= ~EXP_##bit)

bool UniValue::read(std::string_view str_in)
{
    clear();

    uint32_t expectMask = 0;
    std::vector<UniValue*> stack;

    std::string tokenVal;
    unsigned int consumed;
    enum jtokentype tok = JTOK_NONE;
    enum jtokentype last_tok = JTOK_NONE;
    const char* raw{str_in.data()};
    const char* end{raw + str_in.size()};
    do {
        last_tok = tok;

        tok = getJsonToken(tokenVal, consumed, raw, end);
        if (tok == JTOK_NONE || tok == JTOK_ERR)
            return false;
        raw += consumed;

        bool isValueOpen = jsonTokenIsValue(tok) ||
            tok == JTOK_OBJ_OPEN || tok == JTOK_ARR_OPEN;

        if (expect(VALUE)) {
            if (!isValueOpen)
                return false;
            clearExpect(VALUE);

        } else if (expect(ARR_VALUE)) {
            bool isArrValue = isValueOpen || (tok == JTOK_ARR_CLOSE);
            if (!isArrValue)
                return false;

            clearExpect(ARR_VALUE);

        } else if (expect(OBJ_NAME)) {
            bool isObjName = (tok == JTOK_OBJ_CLOSE || tok == JTOK_STRING);
            if (!isObjName)
                return false;

        } else if (expect(COLON)) {
            if (tok != JTOK_COLON)
                return false;
            clearExpect(COLON);

        } else if (!expect(COLON) && (tok == JTOK_COLON)) {
            return false;
        }

        if (expect(NOT_VALUE)) {
            if (isValueOpen)
                return false;
            clearExpect(NOT_VALUE);
        }

        switch (tok) {

        case JTOK_OBJ_OPEN:
        case JTOK_ARR_OPEN: {
            VType utyp = (tok == JTOK_OBJ_OPEN ? VOBJ : VARR);
            if (!stack.size()) {
                if (utyp == VOBJ)
                    setObject();
                else
                    setArray();
                stack.push_back(this);
            } else {
                UniValue tmpVal(utyp);
                UniValue *top = stack.back();
                top->values.push_back(tmpVal);

                UniValue *newTop = &(top->values.back());
                stack.push_back(newTop);
            }

            if (stack.size() > MAX_JSON_DEPTH)
                return false;

            if (utyp == VOBJ)
                setExpect(OBJ_NAME);
            else
                setExpect(ARR_VALUE);
            break;
            }

        case JTOK_OBJ_CLOSE:
        case JTOK_ARR_CLOSE: {
            if (!stack.size() || (last_tok == JTOK_COMMA))
                return false;

            VType utyp = (tok == JTOK_OBJ_CLOSE ? VOBJ : VARR);
            UniValue *top = stack.back();
            if (utyp != top->getType())
                return false;

            stack.pop_back();
            clearExpect(OBJ_NAME);
            setExpect(NOT_VALUE);
            break;
            }

        case JTOK_COLON: {
            if (!stack.size())
                return false;

            UniValue *top = stack.back();
            if (top->getType() != VOBJ)
                return false;

            setExpect(VALUE);
            break;
            }

        case JTOK_COMMA: {
            if (!stack.size() ||
                (last_tok == JTOK_COMMA) || (last_tok == JTOK_ARR_OPEN))
                return false;

            UniValue *top = stack.back();
            if (top->getType() == VOBJ)
                setExpect(OBJ_NAME);
            else
                setExpect(ARR_VALUE);
            break;
            }

        case JTOK_KW_NULL:
        case JTOK_KW_TRUE:
        case JTOK_KW_FALSE: {
            UniValue tmpVal;
            switch (tok) {
            case JTOK_KW_NULL:
                // do nothing more
                break;
            case JTOK_KW_TRUE:
                tmpVal.setBool(true);
                break;
            case JTOK_KW_FALSE:
                tmpVal.setBool(false);
                break;
            default: /* impossible */ break;
            }

            if (!stack.size()) {
                *this = tmpVal;
                break;
            }

            UniValue *top = stack.back();
            top->values.push_back(tmpVal);

            setExpect(NOT_VALUE);
            break;
            }

        case JTOK_NUMBER: {
            UniValue tmpVal(VNUM, tokenVal);
            if (!stack.size()) {
                *this = tmpVal;
                break;
            }

            UniValue *top = stack.back();
            top->values.push_back(tmpVal);

            setExpect(NOT_VALUE);
            break;
            }

        case JTOK_STRING: {
            if (expect(OBJ_NAME)) {
                UniValue *top = stack.back();
                top->keys.push_back(tokenVal);
                clearExpect(OBJ_NAME);
                setExpect(COLON);
            } else {
                UniValue tmpVal(VSTR, tokenVal);
                if (!stack.size()) {
                    *this = tmpVal;
                    break;
                }
                UniValue *top = stack.back();
                top->values.push_back(tmpVal);
            }

            setExpect(NOT_VALUE);
            break;
            }

        default:
            return false;
        }
    } while (!stack.empty ());

    /* Check that nothing follows the initial construct (parsed above).  */
    tok = getJsonToken(tokenVal, consumed, raw, end);
    if (tok != JTOK_NONE)
        return false;

    return true;
}


Coverage Report

Created: 2026-06-01 18:35

Line	Count	Source
1		// Copyright 2014 BitPay Inc.
2		// Distributed under the MIT software license, see the accompanying
3		// file COPYING or https://opensource.org/licenses/mit-license.php.
4
5		#include <univalue.h>
6		#include <univalue_utffilter.h>
7
8		#include <cstdint>
9		#include <cstring>
10		#include <string>
11		#include <string_view>
12		#include <vector>
13
14		/*
15		* According to stackexchange, the original json test suite wanted
16		* to limit depth to 22. Widely-deployed PHP bails at depth 512,
17		* so we will follow PHP's lead, which should be more than sufficient
18		* (further stackexchange comments indicate depth > 32 rarely occurs).
19		*/
20		static constexpr size_t MAX_JSON_DEPTH = 512;
21
22		static bool json_isdigit(int ch)
23	1.82k	{
24	1.82k	return ((ch >= '0') && (ch <= '9')); Branch (24:13): [True: 913, False: 913] Branch (24:28): [True: 913, False: 0]
25	1.82k	}
26
27		// convert hexadecimal string to unsigned integer
28		static const char hatoui(const char first, const char *last,
29		unsigned int& out)
30	0	{
31	0	unsigned int result = 0;
32	0	for (; first != last; ++first) Branch (32:12): [True: 0, False: 0]
33	0	{
34	0	int digit;
35	0	if (json_isdigit(*first)) Branch (35:13): [True: 0, False: 0]
36	0	digit = *first - '0';
37
38	0	else if (first >= 'a' && first <= 'f') Branch (38:18): [True: 0, False: 0] Branch (38:35): [True: 0, False: 0]
39	0	digit = *first - 'a' + 10;
40
41	0	else if (first >= 'A' && first <= 'F') Branch (41:18): [True: 0, False: 0] Branch (41:35): [True: 0, False: 0]
42	0	digit = *first - 'A' + 10;
43
44	0	else
45	0	break;
46
47	0	result = 16 * result + digit;
48	0	}
49	0	out = result;
50
51	0	return first;
52	0	}
53
54		enum jtokentype getJsonToken(std::string& tokenVal, unsigned int& consumed,
55		const char raw, const char end)
56	17.6k	{
57	17.6k	tokenVal.clear();
58	17.6k	consumed = 0;
59
60	17.6k	const char *rawStart = raw;
61
62	17.6k	while (raw < end && (json_isspace(*raw))) // skip whitespace Branch (62:12): [True: 16.7k, False: 913] Branch (62:25): [True: 0, False: 16.7k]
63	0	raw++;
64
65	17.6k	if (raw >= end) Branch (65:9): [True: 913, False: 16.7k]
66	913	return JTOK_NONE;
67
68	16.7k	switch (*raw) {
69
70	913	case '{': Branch (70:5): [True: 913, False: 15.8k]
71	913	raw++;
72	913	consumed = (raw - rawStart);
73	913	return JTOK_OBJ_OPEN;
74	913	case '}': Branch (74:5): [True: 913, False: 15.8k]
75	913	raw++;
76	913	consumed = (raw - rawStart);
77	913	return JTOK_OBJ_CLOSE;
78	913	case '[': Branch (78:5): [True: 913, False: 15.8k]
79	913	raw++;
80	913	consumed = (raw - rawStart);
81	913	return JTOK_ARR_OPEN;
82	913	case ']': Branch (82:5): [True: 913, False: 15.8k]
83	913	raw++;
84	913	consumed = (raw - rawStart);
85	913	return JTOK_ARR_CLOSE;
86
87	3.65k	case ':': Branch (87:5): [True: 3.65k, False: 13.0k]
88	3.65k	raw++;
89	3.65k	consumed = (raw - rawStart);
90	3.65k	return JTOK_COLON;
91	2.73k	case ',': Branch (91:5): [True: 2.73k, False: 13.9k]
92	2.73k	raw++;
93	2.73k	consumed = (raw - rawStart);
94	2.73k	return JTOK_COMMA;
95
96	0	case 'n': Branch (96:5): [True: 0, False: 16.7k]
97	0	case 't': Branch (97:5): [True: 0, False: 16.7k]
98	0	case 'f': Branch (98:5): [True: 0, False: 16.7k]
99	0	if (!strncmp(raw, "null", 4)) { Branch (99:13): [True: 0, False: 0]
100	0	raw += 4;
101	0	consumed = (raw - rawStart);
102	0	return JTOK_KW_NULL;
103	0	} else if (!strncmp(raw, "true", 4)) { Branch (103:20): [True: 0, False: 0]
104	0	raw += 4;
105	0	consumed = (raw - rawStart);
106	0	return JTOK_KW_TRUE;
107	0	} else if (!strncmp(raw, "false", 5)) { Branch (107:20): [True: 0, False: 0]
108	0	raw += 5;
109	0	consumed = (raw - rawStart);
110	0	return JTOK_KW_FALSE;
111	0	} else
112	0	return JTOK_ERR;
113
114	0	case '-': Branch (114:5): [True: 0, False: 16.7k]
115	0	case '0': Branch (115:5): [True: 0, False: 16.7k]
116	0	case '1': Branch (116:5): [True: 0, False: 16.7k]
117	305	case '2': Branch (117:5): [True: 305, False: 16.4k]
118	609	case '3': Branch (118:5): [True: 304, False: 16.4k]
119	913	case '4': Branch (119:5): [True: 304, False: 16.4k]
120	913	case '5': Branch (120:5): [True: 0, False: 16.7k]
121	913	case '6': Branch (121:5): [True: 0, False: 16.7k]
122	913	case '7': Branch (122:5): [True: 0, False: 16.7k]
123	913	case '8': Branch (123:5): [True: 0, False: 16.7k]
124	913	case '9': { Branch (124:5): [True: 0, False: 16.7k]
125		// part 1: int
126	913	std::string numStr;
127
128	913	const char *first = raw;
129
130	913	const char *firstDigit = first;
131	913	if (!json_isdigit(*firstDigit)) Branch (131:13): [True: 0, False: 913]
132	0	firstDigit++;
133	913	if ((*firstDigit == '0') && json_isdigit(firstDigit[1])) Branch (133:13): [True: 0, False: 913] Branch (133:37): [True: 0, False: 0]
134	0	return JTOK_ERR;
135
136	913	numStr += *raw; // copy first char
137	913	raw++;
138
139	913	if ((first == '-') && (raw < end) && (!json_isdigit(raw))) Branch (139:13): [True: 0, False: 913] Branch (139:32): [True: 0, False: 0] Branch (139:47): [True: 0, False: 0]
140	0	return JTOK_ERR;
141
142	913	while (raw < end && json_isdigit(*raw)) { // copy digits Branch (142:16): [True: 913, False: 0] Branch (142:29): [True: 0, False: 913]
143	0	numStr += *raw;
144	0	raw++;
145	0	}
146
147		// part 2: frac
148	913	if (raw < end && *raw == '.') { Branch (148:13): [True: 913, False: 0] Branch (148:26): [True: 0, False: 913]
149	0	numStr += *raw; // copy .
150	0	raw++;
151
152	0	if (raw >= end \|\| !json_isdigit(*raw)) Branch (152:17): [True: 0, False: 0] Branch (152:31): [True: 0, False: 0]
153	0	return JTOK_ERR;
154	0	while (raw < end && json_isdigit(*raw)) { // copy digits Branch (154:20): [True: 0, False: 0] Branch (154:33): [True: 0, False: 0]
155	0	numStr += *raw;
156	0	raw++;
157	0	}
158	0	}
159
160		// part 3: exp
161	913	if (raw < end && (raw == 'e' \|\| raw == 'E')) { Branch (161:13): [True: 913, False: 0] Branch (161:27): [True: 0, False: 913] Branch (161:42): [True: 0, False: 913]
162	0	numStr += *raw; // copy E
163	0	raw++;
164
165	0	if (raw < end && (raw == '-' \|\| raw == '+')) { // copy +/- Branch (165:17): [True: 0, False: 0] Branch (165:31): [True: 0, False: 0] Branch (165:46): [True: 0, False: 0]
166	0	numStr += *raw;
167	0	raw++;
168	0	}
169
170	0	if (raw >= end \|\| !json_isdigit(*raw)) Branch (170:17): [True: 0, False: 0] Branch (170:31): [True: 0, False: 0]
171	0	return JTOK_ERR;
172	0	while (raw < end && json_isdigit(*raw)) { // copy digits Branch (172:20): [True: 0, False: 0] Branch (172:33): [True: 0, False: 0]
173	0	numStr += *raw;
174	0	raw++;
175	0	}
176	0	}
177
178	913	tokenVal = numStr;
179	913	consumed = (raw - rawStart);
180	913	return JTOK_NUMBER;
181	913	}
182
183	5.78k	case '"': { Branch (183:5): [True: 5.78k, False: 10.9k]
184	5.78k	raw++; // skip "
185
186	5.78k	std::string valStr;
187	5.78k	JSONUTF8StringFilter writer(valStr);
188
189	90.0k	while (true) { Branch (189:16): [Folded - Ignored]
190	90.0k	if (raw >= end \|\| (unsigned char)*raw < 0x20) Branch (190:17): [True: 0, False: 90.0k] Branch (190:31): [True: 0, False: 90.0k]
191	0	return JTOK_ERR;
192
193	90.0k	else if (*raw == '\\') { Branch (193:22): [True: 1.52k, False: 88.4k]
194	1.52k	raw++; // skip backslash
195
196	1.52k	if (raw >= end) Branch (196:21): [True: 0, False: 1.52k]
197	0	return JTOK_ERR;
198
199	1.52k	switch (*raw) {
200	0	case '"': writer.push_back('\"'); break; Branch (200:17): [True: 0, False: 1.52k]
201	0	case '\\': writer.push_back('\\'); break; Branch (201:17): [True: 0, False: 1.52k]
202	0	case '/': writer.push_back('/'); break; Branch (202:17): [True: 0, False: 1.52k]
203	0	case 'b': writer.push_back('\b'); break; Branch (203:17): [True: 0, False: 1.52k]
204	0	case 'f': writer.push_back('\f'); break; Branch (204:17): [True: 0, False: 1.52k]
205	1.52k	case 'n': writer.push_back('\n'); break; Branch (205:17): [True: 1.52k, False: 0]
206	0	case 'r': writer.push_back('\r'); break; Branch (206:17): [True: 0, False: 1.52k]
207	0	case 't': writer.push_back('\t'); break; Branch (207:17): [True: 0, False: 1.52k]
208
209	0	case 'u': { Branch (209:17): [True: 0, False: 1.52k]
210	0	unsigned int codepoint;
211	0	if (raw + 1 + 4 >= end \|\| Branch (211:25): [True: 0, False: 0]
212	0	hatoui(raw + 1, raw + 1 + 4, codepoint) != Branch (212:25): [True: 0, False: 0]
213	0	raw + 1 + 4)
214	0	return JTOK_ERR;
215	0	writer.push_back_u(codepoint);
216	0	raw += 4;
217	0	break;
218	0	}
219	0	default: Branch (219:17): [True: 0, False: 1.52k]
220	0	return JTOK_ERR;
221
222	1.52k	}
223
224	1.52k	raw++; // skip esc'd char
225	1.52k	}
226
227	88.4k	else if (*raw == '"') { Branch (227:22): [True: 5.78k, False: 82.7k]
228	5.78k	raw++; // skip "
229	5.78k	break; // stop scanning
230	5.78k	}
231
232	82.7k	else {
233	82.7k	writer.push_back(static_cast<unsigned char>(*raw));
234	82.7k	raw++;
235	82.7k	}
236	90.0k	}
237
238	5.78k	if (!writer.finalize()) Branch (238:13): [True: 0, False: 5.78k]
239	0	return JTOK_ERR;
240	5.78k	tokenVal = valStr;
241	5.78k	consumed = (raw - rawStart);
242	5.78k	return JTOK_STRING;
243	5.78k	}
244
245	0	default: Branch (245:5): [True: 0, False: 16.7k]
246	0	return JTOK_ERR;
247	16.7k	}
248	16.7k	}
249
250		enum expect_bits : unsigned {
251		EXP_OBJ_NAME = (1U << 0),
252		EXP_COLON = (1U << 1),
253		EXP_ARR_VALUE = (1U << 2),
254		EXP_VALUE = (1U << 3),
255		EXP_NOT_VALUE = (1U << 4),
256		};
257
258	82.7k	#define expect(bit) (expectMask & (EXP_##bit))
259	20.3k	#define setExpect(bit) (expectMask \|= EXP_##bit)
260	21.3k	#define clearExpect(bit) (expectMask &= ~EXP_##bit)
261
262		bool UniValue::read(std::string_view str_in)
263	913	{
264	913	clear();
265
266	913	uint32_t expectMask = 0;
267	913	std::vector<UniValue*> stack;
268
269	913	std::string tokenVal;
270	913	unsigned int consumed;
271	913	enum jtokentype tok = JTOK_NONE;
272	913	enum jtokentype last_tok = JTOK_NONE;
273	913	const char* raw{str_in.data()};
274	913	const char* end{raw + str_in.size()};
275	16.7k	do {
276	16.7k	last_tok = tok;
277
278	16.7k	tok = getJsonToken(tokenVal, consumed, raw, end);
279	16.7k	if (tok == JTOK_NONE \|\| tok == JTOK_ERR) Branch (279:13): [True: 0, False: 16.7k] Branch (279:33): [True: 0, False: 16.7k]
280	0	return false;
281	16.7k	raw += consumed;
282
283	16.7k	bool isValueOpen = jsonTokenIsValue(tok) \|\| Branch (283:28): [True: 6.69k, False: 10.0k]
284	16.7k	tok == JTOK_OBJ_OPEN \|\| tok == JTOK_ARR_OPEN; Branch (284:13): [True: 913, False: 9.13k] Branch (284:37): [True: 913, False: 8.21k]
285
286	16.7k	if (expect(VALUE)) {
287	3.65k	if (!isValueOpen) Branch (287:17): [True: 0, False: 3.65k]
288	0	return false;
289	3.65k	clearExpect(VALUE);
290
291	13.0k	} else if (expect(ARR_VALUE)) {
292	913	bool isArrValue = isValueOpen \|\| (tok == JTOK_ARR_CLOSE); Branch (292:31): [True: 304, False: 609] Branch (292:46): [True: 609, False: 0]
293	913	if (!isArrValue) Branch (293:17): [True: 0, False: 913]
294	0	return false;
295
296	913	clearExpect(ARR_VALUE);
297
298	12.1k	} else if (expect(OBJ_NAME)) {
299	3.65k	bool isObjName = (tok == JTOK_OBJ_CLOSE \|\| tok == JTOK_STRING); Branch (299:31): [True: 0, False: 3.65k] Branch (299:56): [True: 3.65k, False: 0]
300	3.65k	if (!isObjName) Branch (300:17): [True: 0, False: 3.65k]
301	0	return false;
302
303	8.52k	} else if (expect(COLON)) {
304	3.65k	if (tok != JTOK_COLON) Branch (304:17): [True: 0, False: 3.65k]
305	0	return false;
306	3.65k	clearExpect(COLON);
307
308	4.86k	} else if (!expect(COLON) && (tok == JTOK_COLON)) { Branch (308:20): [True: 4.86k, False: 0] Branch (308:38): [True: 0, False: 4.86k]
309	0	return false;
310	0	}
311
312	16.7k	if (expect(NOT_VALUE)) {
313	7.60k	if (isValueOpen) Branch (313:17): [True: 0, False: 7.60k]
314	0	return false;
315	7.60k	clearExpect(NOT_VALUE);
316	7.60k	}
317
318	16.7k	switch (tok) {
319
320	913	case JTOK_OBJ_OPEN: Branch (320:9): [True: 913, False: 15.8k]
321	1.82k	case JTOK_ARR_OPEN: { Branch (321:9): [True: 913, False: 15.8k]
322	1.82k	VType utyp = (tok == JTOK_OBJ_OPEN ? VOBJ : VARR); Branch (322:27): [True: 913, False: 913]
323	1.82k	if (!stack.size()) { Branch (323:17): [True: 913, False: 913]
324	913	if (utyp == VOBJ) Branch (324:21): [True: 913, False: 0]
325	913	setObject();
326	0	else
327	0	setArray();
328	913	stack.push_back(this);
329	913	} else {
330	913	UniValue tmpVal(utyp);
331	913	UniValue *top = stack.back();
332	913	top->values.push_back(tmpVal);
333
334	913	UniValue *newTop = &(top->values.back());
335	913	stack.push_back(newTop);
336	913	}
337
338	1.82k	if (stack.size() > MAX_JSON_DEPTH) Branch (338:17): [True: 0, False: 1.82k]
339	0	return false;
340
341	1.82k	if (utyp == VOBJ) Branch (341:17): [True: 913, False: 913]
342	913	setExpect(OBJ_NAME);
343	913	else
344	913	setExpect(ARR_VALUE);
345	1.82k	break;
346	1.82k	}
347
348	913	case JTOK_OBJ_CLOSE: Branch (348:9): [True: 913, False: 15.8k]
349	1.82k	case JTOK_ARR_CLOSE: { Branch (349:9): [True: 913, False: 15.8k]
350	1.82k	if (!stack.size() \|\| (last_tok == JTOK_COMMA)) Branch (350:17): [True: 0, False: 1.82k] Branch (350:34): [True: 0, False: 1.82k]
351	0	return false;
352
353	1.82k	VType utyp = (tok == JTOK_OBJ_CLOSE ? VOBJ : VARR); Branch (353:27): [True: 913, False: 913]
354	1.82k	UniValue *top = stack.back();
355	1.82k	if (utyp != top->getType()) Branch (355:17): [True: 0, False: 1.82k]
356	0	return false;
357
358	1.82k	stack.pop_back();
359	1.82k	clearExpect(OBJ_NAME);
360	1.82k	setExpect(NOT_VALUE);
361	1.82k	break;
362	1.82k	}
363
364	3.65k	case JTOK_COLON: { Branch (364:9): [True: 3.65k, False: 13.0k]
365	3.65k	if (!stack.size()) Branch (365:17): [True: 0, False: 3.65k]
366	0	return false;
367
368	3.65k	UniValue *top = stack.back();
369	3.65k	if (top->getType() != VOBJ) Branch (369:17): [True: 0, False: 3.65k]
370	0	return false;
371
372	3.65k	setExpect(VALUE);
373	3.65k	break;
374	3.65k	}
375
376	2.73k	case JTOK_COMMA: { Branch (376:9): [True: 2.73k, False: 13.9k]
377	2.73k	if (!stack.size() \|\| Branch (377:17): [True: 0, False: 2.73k]
378	2.73k	(last_tok == JTOK_COMMA) \|\| (last_tok == JTOK_ARR_OPEN)) Branch (378:17): [True: 0, False: 2.73k] Branch (378:45): [True: 0, False: 2.73k]
379	0	return false;
380
381	2.73k	UniValue *top = stack.back();
382	2.73k	if (top->getType() == VOBJ) Branch (382:17): [True: 2.73k, False: 0]
383	2.73k	setExpect(OBJ_NAME);
384	0	else
385	0	setExpect(ARR_VALUE);
386	2.73k	break;
387	2.73k	}
388
389	0	case JTOK_KW_NULL: Branch (389:9): [True: 0, False: 16.7k]
390	0	case JTOK_KW_TRUE: Branch (390:9): [True: 0, False: 16.7k]
391	0	case JTOK_KW_FALSE: { Branch (391:9): [True: 0, False: 16.7k]
392	0	UniValue tmpVal;
393	0	switch (tok) {
394	0	case JTOK_KW_NULL: Branch (394:13): [True: 0, False: 0]
395		// do nothing more
396	0	break;
397	0	case JTOK_KW_TRUE: Branch (397:13): [True: 0, False: 0]
398	0	tmpVal.setBool(true);
399	0	break;
400	0	case JTOK_KW_FALSE: Branch (400:13): [True: 0, False: 0]
401	0	tmpVal.setBool(false);
402	0	break;
403	0	default: /* impossible */ break; Branch (403:13): [True: 0, False: 0]
404	0	}
405
406	0	if (!stack.size()) { Branch (406:17): [True: 0, False: 0]
407	0	*this = tmpVal;
408	0	break;
409	0	}
410
411	0	UniValue *top = stack.back();
412	0	top->values.push_back(tmpVal);
413
414	0	setExpect(NOT_VALUE);
415	0	break;
416	0	}
417
418	913	case JTOK_NUMBER: { Branch (418:9): [True: 913, False: 15.8k]
419	913	UniValue tmpVal(VNUM, tokenVal);
420	913	if (!stack.size()) { Branch (420:17): [True: 0, False: 913]
421	0	*this = tmpVal;
422	0	break;
423	0	}
424
425	913	UniValue *top = stack.back();
426	913	top->values.push_back(tmpVal);
427
428	913	setExpect(NOT_VALUE);
429	913	break;
430	913	}
431
432	5.78k	case JTOK_STRING: { Branch (432:9): [True: 5.78k, False: 10.9k]
433	5.78k	if (expect(OBJ_NAME)) {
434	3.65k	UniValue *top = stack.back();
435	3.65k	top->keys.push_back(tokenVal);
436	3.65k	clearExpect(OBJ_NAME);
437	3.65k	setExpect(COLON);
438	3.65k	} else {
439	2.13k	UniValue tmpVal(VSTR, tokenVal);
440	2.13k	if (!stack.size()) { Branch (440:21): [True: 0, False: 2.13k]
441	0	*this = tmpVal;
442	0	break;
443	0	}
444	2.13k	UniValue *top = stack.back();
445	2.13k	top->values.push_back(tmpVal);
446	2.13k	}
447
448	5.78k	setExpect(NOT_VALUE);
449	5.78k	break;
450	5.78k	}
451
452	0	default: Branch (452:9): [True: 0, False: 16.7k]
453	0	return false;
454	16.7k	}
455	16.7k	} while (!stack.empty ()); Branch (455:14): [True: 15.8k, False: 913]
456
457		/* Check that nothing follows the initial construct (parsed above). */
458	913	tok = getJsonToken(tokenVal, consumed, raw, end);
459	913	if (tok != JTOK_NONE) Branch (459:9): [True: 0, False: 913]
460	0	return false;
461
462	913	return true;
463	913	}
464