From 985145ca16e4926420416e3a5f41f3e6e736c590 Mon Sep 17 00:00:00 2001 From: Joshua Haberman Date: Wed, 24 Apr 2019 17:36:17 +0000 Subject: Fixed amalgamation and CMake build. --- upb/json/parser.c | 3409 ----------------------------------------------------- 1 file changed, 3409 deletions(-) delete mode 100644 upb/json/parser.c (limited to 'upb') diff --git a/upb/json/parser.c b/upb/json/parser.c deleted file mode 100644 index 1e9d2fc..0000000 --- a/upb/json/parser.c +++ /dev/null @@ -1,3409 +0,0 @@ - -#line 1 "upb/json/parser.rl" -/* -** upb::json::Parser (upb_json_parser) -** -** A parser that uses the Ragel State Machine Compiler to generate -** the finite automata. -** -** Ragel only natively handles regular languages, but we can manually -** program it a bit to handle context-free languages like JSON, by using -** the "fcall" and "fret" constructs. -** -** This parser can handle the basics, but needs several things to be fleshed -** out: -** -** - handling of unicode escape sequences (including high surrogate pairs). -** - properly check and report errors for unknown fields, stack overflow, -** improper array nesting (or lack of nesting). -** - handling of base64 sequences with padding characters. -** - handling of push-back (non-success returns from sink functions). -** - handling of keys/escape-sequences/etc that span input buffers. -*/ - -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -#include "upb/json/parser.h" -#include "upb/pb/encoder.h" - -#include "upb/port_def.inc" - -#define UPB_JSON_MAX_DEPTH 64 - -/* Type of value message */ -enum { - VALUE_NULLVALUE = 0, - VALUE_NUMBERVALUE = 1, - VALUE_STRINGVALUE = 2, - VALUE_BOOLVALUE = 3, - VALUE_STRUCTVALUE = 4, - VALUE_LISTVALUE = 5 -}; - -/* Forward declare */ -static bool is_top_level(upb_json_parser *p); -static bool is_wellknown_msg(upb_json_parser *p, upb_wellknowntype_t type); -static bool is_wellknown_field(upb_json_parser *p, upb_wellknowntype_t type); - -static bool is_number_wrapper_object(upb_json_parser *p); -static bool does_number_wrapper_start(upb_json_parser *p); -static bool does_number_wrapper_end(upb_json_parser *p); - -static bool is_string_wrapper_object(upb_json_parser *p); -static bool does_string_wrapper_start(upb_json_parser *p); -static bool does_string_wrapper_end(upb_json_parser *p); - -static bool does_fieldmask_start(upb_json_parser *p); -static bool does_fieldmask_end(upb_json_parser *p); -static void start_fieldmask_object(upb_json_parser *p); -static void end_fieldmask_object(upb_json_parser *p); - -static void start_wrapper_object(upb_json_parser *p); -static void end_wrapper_object(upb_json_parser *p); - -static void start_value_object(upb_json_parser *p, int value_type); -static void end_value_object(upb_json_parser *p); - -static void start_listvalue_object(upb_json_parser *p); -static void end_listvalue_object(upb_json_parser *p); - -static void start_structvalue_object(upb_json_parser *p); -static void end_structvalue_object(upb_json_parser *p); - -static void start_object(upb_json_parser *p); -static void end_object(upb_json_parser *p); - -static void start_any_object(upb_json_parser *p, const char *ptr); -static bool end_any_object(upb_json_parser *p, const char *ptr); - -static bool start_subobject(upb_json_parser *p); -static void end_subobject(upb_json_parser *p); - -static void start_member(upb_json_parser *p); -static void end_member(upb_json_parser *p); -static bool end_membername(upb_json_parser *p); - -static void start_any_member(upb_json_parser *p, const char *ptr); -static void end_any_member(upb_json_parser *p, const char *ptr); -static bool end_any_membername(upb_json_parser *p); - -size_t parse(void *closure, const void *hd, const char *buf, size_t size, - const upb_bufhandle *handle); -static bool end(void *closure, const void *hd); - -static const char eof_ch = 'e'; - -/* stringsink */ -typedef struct { - upb_byteshandler handler; - upb_bytessink sink; - char *ptr; - size_t len, size; -} upb_stringsink; - - -static void *stringsink_start(void *_sink, const void *hd, size_t size_hint) { - upb_stringsink *sink = _sink; - sink->len = 0; - UPB_UNUSED(hd); - UPB_UNUSED(size_hint); - return sink; -} - -static size_t stringsink_string(void *_sink, const void *hd, const char *ptr, - size_t len, const upb_bufhandle *handle) { - upb_stringsink *sink = _sink; - size_t new_size = sink->size; - - UPB_UNUSED(hd); - UPB_UNUSED(handle); - - while (sink->len + len > new_size) { - new_size *= 2; - } - - if (new_size != sink->size) { - sink->ptr = realloc(sink->ptr, new_size); - sink->size = new_size; - } - - memcpy(sink->ptr + sink->len, ptr, len); - sink->len += len; - - return len; -} - -void upb_stringsink_init(upb_stringsink *sink) { - upb_byteshandler_init(&sink->handler); - upb_byteshandler_setstartstr(&sink->handler, stringsink_start, NULL); - upb_byteshandler_setstring(&sink->handler, stringsink_string, NULL); - - upb_bytessink_reset(&sink->sink, &sink->handler, sink); - - sink->size = 32; - sink->ptr = malloc(sink->size); - sink->len = 0; -} - -void upb_stringsink_uninit(upb_stringsink *sink) { free(sink->ptr); } - -typedef struct { - /* For encoding Any value field in binary format. */ - upb_handlercache *encoder_handlercache; - upb_stringsink stringsink; - - /* For decoding Any value field in json format. */ - upb_json_codecache *parser_codecache; - upb_sink sink; - upb_json_parser *parser; - - /* Mark the range of uninterpreted values in json input before type url. */ - const char *before_type_url_start; - const char *before_type_url_end; - - /* Mark the range of uninterpreted values in json input after type url. */ - const char *after_type_url_start; -} upb_jsonparser_any_frame; - -typedef struct { - upb_sink sink; - - /* The current message in which we're parsing, and the field whose value we're - * expecting next. */ - const upb_msgdef *m; - const upb_fielddef *f; - - /* The table mapping json name to fielddef for this message. */ - const upb_strtable *name_table; - - /* We are in a repeated-field context. We need this flag to decide whether to - * handle the array as a normal repeated field or a - * google.protobuf.ListValue/google.protobuf.Value. */ - bool is_repeated; - - /* We are in a repeated-field context, ready to emit mapentries as - * submessages. This flag alters the start-of-object (open-brace) behavior to - * begin a sequence of mapentry messages rather than a single submessage. */ - bool is_map; - - /* We are in a map-entry message context. This flag is set when parsing the - * value field of a single map entry and indicates to all value-field parsers - * (subobjects, strings, numbers, and bools) that the map-entry submessage - * should end as soon as the value is parsed. */ - bool is_mapentry; - - /* If |is_map| or |is_mapentry| is true, |mapfield| refers to the parent - * message's map field that we're currently parsing. This differs from |f| - * because |f| is the field in the *current* message (i.e., the map-entry - * message itself), not the parent's field that leads to this map. */ - const upb_fielddef *mapfield; - - /* We are in an Any message context. This flag is set when parsing the Any - * message and indicates to all field parsers (subobjects, strings, numbers, - * and bools) that the parsed field should be serialized as binary data or - * cached (type url not found yet). */ - bool is_any; - - /* The type of packed message in Any. */ - upb_jsonparser_any_frame *any_frame; - - /* True if the field to be parsed is unknown. */ - bool is_unknown_field; -} upb_jsonparser_frame; - -static void init_frame(upb_jsonparser_frame* frame) { - frame->m = NULL; - frame->f = NULL; - frame->name_table = NULL; - frame->is_repeated = false; - frame->is_map = false; - frame->is_mapentry = false; - frame->mapfield = NULL; - frame->is_any = false; - frame->any_frame = NULL; - frame->is_unknown_field = false; -} - -struct upb_json_parser { - upb_arena *arena; - const upb_json_parsermethod *method; - upb_bytessink input_; - - /* Stack to track the JSON scopes we are in. */ - upb_jsonparser_frame stack[UPB_JSON_MAX_DEPTH]; - upb_jsonparser_frame *top; - upb_jsonparser_frame *limit; - - upb_status *status; - - /* Ragel's internal parsing stack for the parsing state machine. */ - int current_state; - int parser_stack[UPB_JSON_MAX_DEPTH]; - int parser_top; - - /* The handle for the current buffer. */ - const upb_bufhandle *handle; - - /* Accumulate buffer. See details in parser.rl. */ - const char *accumulated; - size_t accumulated_len; - char *accumulate_buf; - size_t accumulate_buf_size; - - /* Multi-part text data. See details in parser.rl. */ - int multipart_state; - upb_selector_t string_selector; - - /* Input capture. See details in parser.rl. */ - const char *capture; - - /* Intermediate result of parsing a unicode escape sequence. */ - uint32_t digit; - - /* For resolve type url in Any. */ - const upb_symtab *symtab; - - /* Whether to proceed if unknown field is met. */ - bool ignore_json_unknown; - - /* Cache for parsing timestamp due to base and zone are handled in different - * handlers. */ - struct tm tm; -}; - -static upb_jsonparser_frame* start_jsonparser_frame(upb_json_parser *p) { - upb_jsonparser_frame *inner; - inner = p->top + 1; - init_frame(inner); - return inner; -} - -struct upb_json_codecache { - upb_arena *arena; - upb_inttable methods; /* upb_msgdef* -> upb_json_parsermethod* */ -}; - -struct upb_json_parsermethod { - const upb_json_codecache *cache; - upb_byteshandler input_handler_; - - /* Maps json_name -> fielddef */ - upb_strtable name_table; -}; - -#define PARSER_CHECK_RETURN(x) if (!(x)) return false - -static upb_jsonparser_any_frame *json_parser_any_frame_new( - upb_json_parser *p) { - upb_jsonparser_any_frame *frame; - - frame = upb_arena_malloc(p->arena, sizeof(upb_jsonparser_any_frame)); - - frame->encoder_handlercache = upb_pb_encoder_newcache(); - frame->parser_codecache = upb_json_codecache_new(); - frame->parser = NULL; - frame->before_type_url_start = NULL; - frame->before_type_url_end = NULL; - frame->after_type_url_start = NULL; - - upb_stringsink_init(&frame->stringsink); - - return frame; -} - -static void json_parser_any_frame_set_payload_type( - upb_json_parser *p, - upb_jsonparser_any_frame *frame, - const upb_msgdef *payload_type) { - const upb_handlers *h; - const upb_json_parsermethod *parser_method; - upb_pb_encoder *encoder; - - /* Initialize encoder. */ - h = upb_handlercache_get(frame->encoder_handlercache, payload_type); - encoder = upb_pb_encoder_create(p->arena, h, frame->stringsink.sink); - - /* Initialize parser. */ - parser_method = upb_json_codecache_get(frame->parser_codecache, payload_type); - upb_sink_reset(&frame->sink, h, encoder); - frame->parser = - upb_json_parser_create(p->arena, parser_method, p->symtab, frame->sink, - p->status, p->ignore_json_unknown); -} - -static void json_parser_any_frame_free(upb_jsonparser_any_frame *frame) { - upb_handlercache_free(frame->encoder_handlercache); - upb_json_codecache_free(frame->parser_codecache); - upb_stringsink_uninit(&frame->stringsink); -} - -static bool json_parser_any_frame_has_type_url( - upb_jsonparser_any_frame *frame) { - return frame->parser != NULL; -} - -static bool json_parser_any_frame_has_value_before_type_url( - upb_jsonparser_any_frame *frame) { - return frame->before_type_url_start != frame->before_type_url_end; -} - -static bool json_parser_any_frame_has_value_after_type_url( - upb_jsonparser_any_frame *frame) { - return frame->after_type_url_start != NULL; -} - -static bool json_parser_any_frame_has_value( - upb_jsonparser_any_frame *frame) { - return json_parser_any_frame_has_value_before_type_url(frame) || - json_parser_any_frame_has_value_after_type_url(frame); -} - -static void json_parser_any_frame_set_before_type_url_end( - upb_jsonparser_any_frame *frame, - const char *ptr) { - if (frame->parser == NULL) { - frame->before_type_url_end = ptr; - } -} - -static void json_parser_any_frame_set_after_type_url_start_once( - upb_jsonparser_any_frame *frame, - const char *ptr) { - if (json_parser_any_frame_has_type_url(frame) && - frame->after_type_url_start == NULL) { - frame->after_type_url_start = ptr; - } -} - -/* Used to signal that a capture has been suspended. */ -static char suspend_capture; - -static upb_selector_t getsel_for_handlertype(upb_json_parser *p, - upb_handlertype_t type) { - upb_selector_t sel; - bool ok = upb_handlers_getselector(p->top->f, type, &sel); - UPB_ASSERT(ok); - return sel; -} - -static upb_selector_t parser_getsel(upb_json_parser *p) { - return getsel_for_handlertype( - p, upb_handlers_getprimitivehandlertype(p->top->f)); -} - -static bool check_stack(upb_json_parser *p) { - if ((p->top + 1) == p->limit) { - upb_status_seterrmsg(p->status, "Nesting too deep"); - return false; - } - - return true; -} - -static void set_name_table(upb_json_parser *p, upb_jsonparser_frame *frame) { - upb_value v; - const upb_json_codecache *cache = p->method->cache; - bool ok; - const upb_json_parsermethod *method; - - ok = upb_inttable_lookupptr(&cache->methods, frame->m, &v); - UPB_ASSERT(ok); - method = upb_value_getconstptr(v); - - frame->name_table = &method->name_table; -} - -/* There are GCC/Clang built-ins for overflow checking which we could start - * using if there was any performance benefit to it. */ - -static bool checked_add(size_t a, size_t b, size_t *c) { - if (SIZE_MAX - a < b) return false; - *c = a + b; - return true; -} - -static size_t saturating_multiply(size_t a, size_t b) { - /* size_t is unsigned, so this is defined behavior even on overflow. */ - size_t ret = a * b; - if (b != 0 && ret / b != a) { - ret = SIZE_MAX; - } - return ret; -} - - -/* Base64 decoding ************************************************************/ - -/* TODO(haberman): make this streaming. */ - -static const signed char b64table[] = { - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, 62/*+*/, -1, -1, -1, 63/*/ */, - 52/*0*/, 53/*1*/, 54/*2*/, 55/*3*/, 56/*4*/, 57/*5*/, 58/*6*/, 59/*7*/, - 60/*8*/, 61/*9*/, -1, -1, -1, -1, -1, -1, - -1, 0/*A*/, 1/*B*/, 2/*C*/, 3/*D*/, 4/*E*/, 5/*F*/, 6/*G*/, - 07/*H*/, 8/*I*/, 9/*J*/, 10/*K*/, 11/*L*/, 12/*M*/, 13/*N*/, 14/*O*/, - 15/*P*/, 16/*Q*/, 17/*R*/, 18/*S*/, 19/*T*/, 20/*U*/, 21/*V*/, 22/*W*/, - 23/*X*/, 24/*Y*/, 25/*Z*/, -1, -1, -1, -1, -1, - -1, 26/*a*/, 27/*b*/, 28/*c*/, 29/*d*/, 30/*e*/, 31/*f*/, 32/*g*/, - 33/*h*/, 34/*i*/, 35/*j*/, 36/*k*/, 37/*l*/, 38/*m*/, 39/*n*/, 40/*o*/, - 41/*p*/, 42/*q*/, 43/*r*/, 44/*s*/, 45/*t*/, 46/*u*/, 47/*v*/, 48/*w*/, - 49/*x*/, 50/*y*/, 51/*z*/, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1, - -1, -1, -1, -1, -1, -1, -1, -1 -}; - -/* Returns the table value sign-extended to 32 bits. Knowing that the upper - * bits will be 1 for unrecognized characters makes it easier to check for - * this error condition later (see below). */ -int32_t b64lookup(unsigned char ch) { return b64table[ch]; } - -/* Returns true if the given character is not a valid base64 character or - * padding. */ -bool nonbase64(unsigned char ch) { return b64lookup(ch) == -1 && ch != '='; } - -static bool base64_push(upb_json_parser *p, upb_selector_t sel, const char *ptr, - size_t len) { - const char *limit = ptr + len; - for (; ptr < limit; ptr += 4) { - uint32_t val; - char output[3]; - - if (limit - ptr < 4) { - upb_status_seterrf(p->status, - "Base64 input for bytes field not a multiple of 4: %s", - upb_fielddef_name(p->top->f)); - return false; - } - - val = b64lookup(ptr[0]) << 18 | - b64lookup(ptr[1]) << 12 | - b64lookup(ptr[2]) << 6 | - b64lookup(ptr[3]); - - /* Test the upper bit; returns true if any of the characters returned -1. */ - if (val & 0x80000000) { - goto otherchar; - } - - output[0] = val >> 16; - output[1] = (val >> 8) & 0xff; - output[2] = val & 0xff; - upb_sink_putstring(p->top->sink, sel, output, 3, NULL); - } - return true; - -otherchar: - if (nonbase64(ptr[0]) || nonbase64(ptr[1]) || nonbase64(ptr[2]) || - nonbase64(ptr[3]) ) { - upb_status_seterrf(p->status, - "Non-base64 characters in bytes field: %s", - upb_fielddef_name(p->top->f)); - return false; - } if (ptr[2] == '=') { - uint32_t val; - char output; - - /* Last group contains only two input bytes, one output byte. */ - if (ptr[0] == '=' || ptr[1] == '=' || ptr[3] != '=') { - goto badpadding; - } - - val = b64lookup(ptr[0]) << 18 | - b64lookup(ptr[1]) << 12; - - UPB_ASSERT(!(val & 0x80000000)); - output = val >> 16; - upb_sink_putstring(p->top->sink, sel, &output, 1, NULL); - return true; - } else { - uint32_t val; - char output[2]; - - /* Last group contains only three input bytes, two output bytes. */ - if (ptr[0] == '=' || ptr[1] == '=' || ptr[2] == '=') { - goto badpadding; - } - - val = b64lookup(ptr[0]) << 18 | - b64lookup(ptr[1]) << 12 | - b64lookup(ptr[2]) << 6; - - output[0] = val >> 16; - output[1] = (val >> 8) & 0xff; - upb_sink_putstring(p->top->sink, sel, output, 2, NULL); - return true; - } - -badpadding: - upb_status_seterrf(p->status, - "Incorrect base64 padding for field: %s (%.*s)", - upb_fielddef_name(p->top->f), - 4, ptr); - return false; -} - - -/* Accumulate buffer **********************************************************/ - -/* Functionality for accumulating a buffer. - * - * Some parts of the parser need an entire value as a contiguous string. For - * example, to look up a member name in a hash table, or to turn a string into - * a number, the relevant library routines need the input string to be in - * contiguous memory, even if the value spanned two or more buffers in the - * input. These routines handle that. - * - * In the common case we can just point to the input buffer to get this - * contiguous string and avoid any actual copy. So we optimistically begin - * this way. But there are a few cases where we must instead copy into a - * separate buffer: - * - * 1. The string was not contiguous in the input (it spanned buffers). - * - * 2. The string included escape sequences that need to be interpreted to get - * the true value in a contiguous buffer. */ - -static void assert_accumulate_empty(upb_json_parser *p) { - UPB_ASSERT(p->accumulated == NULL); - UPB_ASSERT(p->accumulated_len == 0); -} - -static void accumulate_clear(upb_json_parser *p) { - p->accumulated = NULL; - p->accumulated_len = 0; -} - -/* Used internally by accumulate_append(). */ -static bool accumulate_realloc(upb_json_parser *p, size_t need) { - void *mem; - size_t old_size = p->accumulate_buf_size; - size_t new_size = UPB_MAX(old_size, 128); - while (new_size < need) { - new_size = saturating_multiply(new_size, 2); - } - - mem = upb_arena_realloc(p->arena, p->accumulate_buf, old_size, new_size); - if (!mem) { - upb_status_seterrmsg(p->status, "Out of memory allocating buffer."); - return false; - } - - p->accumulate_buf = mem; - p->accumulate_buf_size = new_size; - return true; -} - -/* Logically appends the given data to the append buffer. - * If "can_alias" is true, we will try to avoid actually copying, but the buffer - * must be valid until the next accumulate_append() call (if any). */ -static bool accumulate_append(upb_json_parser *p, const char *buf, size_t len, - bool can_alias) { - size_t need; - - if (!p->accumulated && can_alias) { - p->accumulated = buf; - p->accumulated_len = len; - return true; - } - - if (!checked_add(p->accumulated_len, len, &need)) { - upb_status_seterrmsg(p->status, "Integer overflow."); - return false; - } - - if (need > p->accumulate_buf_size && !accumulate_realloc(p, need)) { - return false; - } - - if (p->accumulated != p->accumulate_buf) { - memcpy(p->accumulate_buf, p->accumulated, p->accumulated_len); - p->accumulated = p->accumulate_buf; - } - - memcpy(p->accumulate_buf + p->accumulated_len, buf, len); - p->accumulated_len += len; - return true; -} - -/* Returns a pointer to the data accumulated since the last accumulate_clear() - * call, and writes the length to *len. This with point either to the input - * buffer or a temporary accumulate buffer. */ -static const char *accumulate_getptr(upb_json_parser *p, size_t *len) { - UPB_ASSERT(p->accumulated); - *len = p->accumulated_len; - return p->accumulated; -} - - -/* Mult-part text data ********************************************************/ - -/* When we have text data in the input, it can often come in multiple segments. - * For example, there may be some raw string data followed by an escape - * sequence. The two segments are processed with different logic. Also buffer - * seams in the input can cause multiple segments. - * - * As we see segments, there are two main cases for how we want to process them: - * - * 1. we want to push the captured input directly to string handlers. - * - * 2. we need to accumulate all the parts into a contiguous buffer for further - * processing (field name lookup, string->number conversion, etc). */ - -/* This is the set of states for p->multipart_state. */ -enum { - /* We are not currently processing multipart data. */ - MULTIPART_INACTIVE = 0, - - /* We are processing multipart data by accumulating it into a contiguous - * buffer. */ - MULTIPART_ACCUMULATE = 1, - - /* We are processing multipart data by pushing each part directly to the - * current string handlers. */ - MULTIPART_PUSHEAGERLY = 2 -}; - -/* Start a multi-part text value where we accumulate the data for processing at - * the end. */ -static void multipart_startaccum(upb_json_parser *p) { - assert_accumulate_empty(p); - UPB_ASSERT(p->multipart_state == MULTIPART_INACTIVE); - p->multipart_state = MULTIPART_ACCUMULATE; -} - -/* Start a multi-part text value where we immediately push text data to a string - * value with the given selector. */ -static void multipart_start(upb_json_parser *p, upb_selector_t sel) { - assert_accumulate_empty(p); - UPB_ASSERT(p->multipart_state == MULTIPART_INACTIVE); - p->multipart_state = MULTIPART_PUSHEAGERLY; - p->string_selector = sel; -} - -static bool multipart_text(upb_json_parser *p, const char *buf, size_t len, - bool can_alias) { - switch (p->multipart_state) { - case MULTIPART_INACTIVE: - upb_status_seterrmsg( - p->status, "Internal error: unexpected state MULTIPART_INACTIVE"); - return false; - - case MULTIPART_ACCUMULATE: - if (!accumulate_append(p, buf, len, can_alias)) { - return false; - } - break; - - case MULTIPART_PUSHEAGERLY: { - const upb_bufhandle *handle = can_alias ? p->handle : NULL; - upb_sink_putstring(p->top->sink, p->string_selector, buf, len, handle); - break; - } - } - - return true; -} - -/* Note: this invalidates the accumulate buffer! Call only after reading its - * contents. */ -static void multipart_end(upb_json_parser *p) { - UPB_ASSERT(p->multipart_state != MULTIPART_INACTIVE); - p->multipart_state = MULTIPART_INACTIVE; - accumulate_clear(p); -} - - -/* Input capture **************************************************************/ - -/* Functionality for capturing a region of the input as text. Gracefully - * handles the case where a buffer seam occurs in the middle of the captured - * region. */ - -static void capture_begin(upb_json_parser *p, const char *ptr) { - UPB_ASSERT(p->multipart_state != MULTIPART_INACTIVE); - UPB_ASSERT(p->capture == NULL); - p->capture = ptr; -} - -static bool capture_end(upb_json_parser *p, const char *ptr) { - UPB_ASSERT(p->capture); - if (multipart_text(p, p->capture, ptr - p->capture, true)) { - p->capture = NULL; - return true; - } else { - return false; - } -} - -/* This is called at the end of each input buffer (ie. when we have hit a - * buffer seam). If we are in the middle of capturing the input, this - * processes the unprocessed capture region. */ -static void capture_suspend(upb_json_parser *p, const char **ptr) { - if (!p->capture) return; - - if (multipart_text(p, p->capture, *ptr - p->capture, false)) { - /* We use this as a signal that we were in the middle of capturing, and - * that capturing should resume at the beginning of the next buffer. - * - * We can't use *ptr here, because we have no guarantee that this pointer - * will be valid when we resume (if the underlying memory is freed, then - * using the pointer at all, even to compare to NULL, is likely undefined - * behavior). */ - p->capture = &suspend_capture; - } else { - /* Need to back up the pointer to the beginning of the capture, since - * we were not able to actually preserve it. */ - *ptr = p->capture; - } -} - -static void capture_resume(upb_json_parser *p, const char *ptr) { - if (p->capture) { - UPB_ASSERT(p->capture == &suspend_capture); - p->capture = ptr; - } -} - - -/* Callbacks from the parser **************************************************/ - -/* These are the functions called directly from the parser itself. - * We define these in the same order as their declarations in the parser. */ - -static char escape_char(char in) { - switch (in) { - case 'r': return '\r'; - case 't': return '\t'; - case 'n': return '\n'; - case 'f': return '\f'; - case 'b': return '\b'; - case '/': return '/'; - case '"': return '"'; - case '\\': return '\\'; - default: - UPB_ASSERT(0); - return 'x'; - } -} - -static bool escape(upb_json_parser *p, const char *ptr) { - char ch = escape_char(*ptr); - return multipart_text(p, &ch, 1, false); -} - -static void start_hex(upb_json_parser *p) { - p->digit = 0; -} - -static void hexdigit(upb_json_parser *p, const char *ptr) { - char ch = *ptr; - - p->digit <<= 4; - - if (ch >= '0' && ch <= '9') { - p->digit += (ch - '0'); - } else if (ch >= 'a' && ch <= 'f') { - p->digit += ((ch - 'a') + 10); - } else { - UPB_ASSERT(ch >= 'A' && ch <= 'F'); - p->digit += ((ch - 'A') + 10); - } -} - -static bool end_hex(upb_json_parser *p) { - uint32_t codepoint = p->digit; - - /* emit the codepoint as UTF-8. */ - char utf8[3]; /* support \u0000 -- \uFFFF -- need only three bytes. */ - int length = 0; - if (codepoint <= 0x7F) { - utf8[0] = codepoint; - length = 1; - } else if (codepoint <= 0x07FF) { - utf8[1] = (codepoint & 0x3F) | 0x80; - codepoint >>= 6; - utf8[0] = (codepoint & 0x1F) | 0xC0; - length = 2; - } else /* codepoint <= 0xFFFF */ { - utf8[2] = (codepoint & 0x3F) | 0x80; - codepoint >>= 6; - utf8[1] = (codepoint & 0x3F) | 0x80; - codepoint >>= 6; - utf8[0] = (codepoint & 0x0F) | 0xE0; - length = 3; - } - /* TODO(haberman): Handle high surrogates: if codepoint is a high surrogate - * we have to wait for the next escape to get the full code point). */ - - return multipart_text(p, utf8, length, false); -} - -static void start_text(upb_json_parser *p, const char *ptr) { - capture_begin(p, ptr); -} - -static bool end_text(upb_json_parser *p, const char *ptr) { - return capture_end(p, ptr); -} - -static bool start_number(upb_json_parser *p, const char *ptr) { - if (is_top_level(p)) { - if (is_number_wrapper_object(p)) { - start_wrapper_object(p); - } else if (is_wellknown_msg(p, UPB_WELLKNOWN_VALUE)) { - start_value_object(p, VALUE_NUMBERVALUE); - } else { - return false; - } - } else if (does_number_wrapper_start(p)) { - if (!start_subobject(p)) { - return false; - } - start_wrapper_object(p); - } else if (is_wellknown_field(p, UPB_WELLKNOWN_VALUE)) { - if (!start_subobject(p)) { - return false; - } - start_value_object(p, VALUE_NUMBERVALUE); - } - - multipart_startaccum(p); - capture_begin(p, ptr); - return true; -} - -static bool parse_number(upb_json_parser *p, bool is_quoted); - -static bool end_number_nontop(upb_json_parser *p, const char *ptr) { - if (!capture_end(p, ptr)) { - return false; - } - - if (p->top->f == NULL) { - multipart_end(p); - return true; - } - - return parse_number(p, false); -} - -static bool end_number(upb_json_parser *p, const char *ptr) { - if (!end_number_nontop(p, ptr)) { - return false; - } - - if (does_number_wrapper_end(p)) { - end_wrapper_object(p); - if (!is_top_level(p)) { - end_subobject(p); - } - return true; - } - - if (is_wellknown_msg(p, UPB_WELLKNOWN_VALUE)) { - end_value_object(p); - if (!is_top_level(p)) { - end_subobject(p); - } - return true; - } - - return true; -} - -/* |buf| is NULL-terminated. |buf| itself will never include quotes; - * |is_quoted| tells us whether this text originally appeared inside quotes. */ -static bool parse_number_from_buffer(upb_json_parser *p, const char *buf, - bool is_quoted) { - size_t len = strlen(buf); - const char *bufend = buf + len; - char *end; - upb_fieldtype_t type = upb_fielddef_type(p->top->f); - double val; - double dummy; - double inf = 1.0 / 0.0; /* C89 does not have an INFINITY macro. */ - - errno = 0; - - if (len == 0 || buf[0] == ' ') { - return false; - } - - /* For integer types, first try parsing with integer-specific routines. - * If these succeed, they will be more accurate for int64/uint64 than - * strtod(). - */ - switch (type) { - case UPB_TYPE_ENUM: - case UPB_TYPE_INT32: { - long val = strtol(buf, &end, 0); - if (errno == ERANGE || end != bufend) { - break; - } else if (val > INT32_MAX || val < INT32_MIN) { - return false; - } else { - upb_sink_putint32(p->top->sink, parser_getsel(p), val); - return true; - } - } - case UPB_TYPE_UINT32: { - unsigned long val = strtoul(buf, &end, 0); - if (end != bufend) { - break; - } else if (val > UINT32_MAX || errno == ERANGE) { - return false; - } else { - upb_sink_putuint32(p->top->sink, parser_getsel(p), val); - return true; - } - } - /* XXX: We can't handle [u]int64 properly on 32-bit machines because - * strto[u]ll isn't in C89. */ - case UPB_TYPE_INT64: { - long val = strtol(buf, &end, 0); - if (errno == ERANGE || end != bufend) { - break; - } else { - upb_sink_putint64(p->top->sink, parser_getsel(p), val); - return true; - } - } - case UPB_TYPE_UINT64: { - unsigned long val = strtoul(p->accumulated, &end, 0); - if (end != bufend) { - break; - } else if (errno == ERANGE) { - return false; - } else { - upb_sink_putuint64(p->top->sink, parser_getsel(p), val); - return true; - } - } - default: - break; - } - - if (type != UPB_TYPE_DOUBLE && type != UPB_TYPE_FLOAT && is_quoted) { - /* Quoted numbers for integer types are not allowed to be in double form. */ - return false; - } - - if (len == strlen("Infinity") && strcmp(buf, "Infinity") == 0) { - /* C89 does not have an INFINITY macro. */ - val = inf; - } else if (len == strlen("-Infinity") && strcmp(buf, "-Infinity") == 0) { - val = -inf; - } else { - val = strtod(buf, &end); - if (errno == ERANGE || end != bufend) { - return false; - } - } - - switch (type) { -#define CASE(capitaltype, smalltype, ctype, min, max) \ - case UPB_TYPE_ ## capitaltype: { \ - if (modf(val, &dummy) != 0 || val > max || val < min) { \ - return false; \ - } else { \ - upb_sink_put ## smalltype(p->top->sink, parser_getsel(p), \ - (ctype)val); \ - return true; \ - } \ - break; \ - } - case UPB_TYPE_ENUM: - CASE(INT32, int32, int32_t, INT32_MIN, INT32_MAX); - CASE(INT64, int64, int64_t, INT64_MIN, INT64_MAX); - CASE(UINT32, uint32, uint32_t, 0, UINT32_MAX); - CASE(UINT64, uint64, uint64_t, 0, UINT64_MAX); -#undef CASE - - case UPB_TYPE_DOUBLE: - upb_sink_putdouble(p->top->sink, parser_getsel(p), val); - return true; - case UPB_TYPE_FLOAT: - if ((val > FLT_MAX || val < -FLT_MAX) && val != inf && val != -inf) { - return false; - } else { - upb_sink_putfloat(p->top->sink, parser_getsel(p), val); - return true; - } - default: - return false; - } -} - -static bool parse_number(upb_json_parser *p, bool is_quoted) { - size_t len; - const char *buf; - - /* strtol() and friends unfortunately do not support specifying the length of - * the input string, so we need to force a copy into a NULL-terminated buffer. */ - if (!multipart_text(p, "\0", 1, false)) { - return false; - } - - buf = accumulate_getptr(p, &len); - - if (parse_number_from_buffer(p, buf, is_quoted)) { - multipart_end(p); - return true; - } else { - upb_status_seterrf(p->status, "error parsing number: %s", buf); - multipart_end(p); - return false; - } -} - -static bool parser_putbool(upb_json_parser *p, bool val) { - bool ok; - - if (p->top->f == NULL) { - return true; - } - - if (upb_fielddef_type(p->top->f) != UPB_TYPE_BOOL) { - upb_status_seterrf(p->status, - "Boolean value specified for non-bool field: %s", - upb_fielddef_name(p->top->f)); - return false; - } - - ok = upb_sink_putbool(p->top->sink, parser_getsel(p), val); - UPB_ASSERT(ok); - - return true; -} - -static bool end_bool(upb_json_parser *p, bool val) { - if (is_top_level(p)) { - if (is_wellknown_msg(p, UPB_WELLKNOWN_BOOLVALUE)) { - start_wrapper_object(p); - } else if (is_wellknown_msg(p, UPB_WELLKNOWN_VALUE)) { - start_value_object(p, VALUE_BOOLVALUE); - } else { - return false; - } - } else if (is_wellknown_field(p, UPB_WELLKNOWN_BOOLVALUE)) { - if (!start_subobject(p)) { - return false; - } - start_wrapper_object(p); - } else if (is_wellknown_field(p, UPB_WELLKNOWN_VALUE)) { - if (!start_subobject(p)) { - return false; - } - start_value_object(p, VALUE_BOOLVALUE); - } - - if (p->top->is_unknown_field) { - return true; - } - - if (!parser_putbool(p, val)) { - return false; - } - - if (is_wellknown_msg(p, UPB_WELLKNOWN_BOOLVALUE)) { - end_wrapper_object(p); - if (!is_top_level(p)) { - end_subobject(p); - } - return true; - } - - if (is_wellknown_msg(p, UPB_WELLKNOWN_VALUE)) { - end_value_object(p); - if (!is_top_level(p)) { - end_subobject(p); - } - return true; - } - - return true; -} - -static bool end_null(upb_json_parser *p) { - const char *zero_ptr = "0"; - - if (is_top_level(p)) { - if (is_wellknown_msg(p, UPB_WELLKNOWN_VALUE)) { - start_value_object(p, VALUE_NULLVALUE); - } else { - return true; - } - } else if (is_wellknown_field(p, UPB_WELLKNOWN_VALUE)) { - if (!start_subobject(p)) { - return false; - } - start_value_object(p, VALUE_NULLVALUE); - } else { - return true; - } - - /* Fill null_value field. */ - multipart_startaccum(p); - capture_begin(p, zero_ptr); - capture_end(p, zero_ptr + 1); - parse_number(p, false); - - end_value_object(p); - if (!is_top_level(p)) { - end_subobject(p); - } - - return true; -} - -static bool start_any_stringval(upb_json_parser *p) { - multipart_startaccum(p); - return true; -} - -static bool start_stringval(upb_json_parser *p) { - if (is_top_level(p)) { - if (is_string_wrapper_object(p)) { - start_wrapper_object(p); - } else if (is_wellknown_msg(p, UPB_WELLKNOWN_FIELDMASK)) { - start_fieldmask_object(p); - return true; - } else if (is_wellknown_msg(p, UPB_WELLKNOWN_TIMESTAMP) || - is_wellknown_msg(p, UPB_WELLKNOWN_DURATION)) { - start_object(p); - } else if (is_wellknown_msg(p, UPB_WELLKNOWN_VALUE)) { - start_value_object(p, VALUE_STRINGVALUE); - } else { - return false; - } - } else if (does_string_wrapper_start(p)) { - if (!start_subobject(p)) { - return false; - } - start_wrapper_object(p); - } else if (does_fieldmask_start(p)) { - if (!start_subobject(p)) { - return false; - } - start_fieldmask_object(p); - return true; - } else if (is_wellknown_field(p, UPB_WELLKNOWN_TIMESTAMP) || - is_wellknown_field(p, UPB_WELLKNOWN_DURATION)) { - if (!start_subobject(p)) { - return false; - } - start_object(p); - } else if (is_wellknown_field(p, UPB_WELLKNOWN_VALUE)) { - if (!start_subobject(p)) { - return false; - } - start_value_object(p, VALUE_STRINGVALUE); - } - - if (p->top->f == NULL) { - multipart_startaccum(p); - return true; - } - - if (p->top->is_any) { - return start_any_stringval(p); - } - - if (upb_fielddef_isstring(p->top->f)) { - upb_jsonparser_frame *inner; - upb_selector_t sel; - - if (!check_stack(p)) return false; - - /* Start a new parser frame: parser frames correspond one-to-one with - * handler frames, and string events occur in a sub-frame. */ - inner = start_jsonparser_frame(p); - sel = getsel_for_handlertype(p, UPB_HANDLER_STARTSTR); - upb_sink_startstr(p->top->sink, sel, 0, &inner->sink); - inner->m = p->top->m; - inner->f = p->top->f; - p->top = inner; - - if (upb_fielddef_type(p->top->f) == UPB_TYPE_STRING) { - /* For STRING fields we push data directly to the handlers as it is - * parsed. We don't do this yet for BYTES fields, because our base64 - * decoder is not streaming. - * - * TODO(haberman): make base64 decoding streaming also. */ - multipart_start(p, getsel_for_handlertype(p, UPB_HANDLER_STRING)); - return true; - } else { - multipart_startaccum(p); - return true; - } - } else if (upb_fielddef_type(p->top->f) != UPB_TYPE_BOOL && - upb_fielddef_type(p->top->f) != UPB_TYPE_MESSAGE) { - /* No need to push a frame -- numeric values in quotes remain in the - * current parser frame. These values must accmulate so we can convert - * them all at once at the end. */ - multipart_startaccum(p); - return true; - } else { - upb_status_seterrf(p->status, - "String specified for bool or submessage field: %s", - upb_fielddef_name(p->top->f)); - return false; - } -} - -static bool end_any_stringval(upb_json_parser *p) { - size_t len; - const char *buf = accumulate_getptr(p, &len); - - /* Set type_url */ - upb_selector_t sel; - upb_jsonparser_frame *inner; - if (!check_stack(p)) return false; - inner = p->top + 1; - - sel = getsel_for_handlertype(p, UPB_HANDLER_STARTSTR); - upb_sink_startstr(p->top->sink, sel, 0, &inner->sink); - sel = getsel_for_handlertype(p, UPB_HANDLER_STRING); - upb_sink_putstring(inner->sink, sel, buf, len, NULL); - sel = getsel_for_handlertype(p, UPB_HANDLER_ENDSTR); - upb_sink_endstr(inner->sink, sel); - - multipart_end(p); - - /* Resolve type url */ - if (strncmp(buf, "type.googleapis.com/", 20) == 0 && len > 20) { - const upb_msgdef *payload_type = NULL; - buf += 20; - len -= 20; - - payload_type = upb_symtab_lookupmsg2(p->symtab, buf, len); - if (payload_type == NULL) { - upb_status_seterrf( - p->status, "Cannot find packed type: %.*s\n", (int)len, buf); - return false; - } - - json_parser_any_frame_set_payload_type(p, p->top->any_frame, payload_type); - - return true; - } else { - upb_status_seterrf( - p->status, "Invalid type url: %.*s\n", (int)len, buf); - return false; - } -} - -static bool end_stringval_nontop(upb_json_parser *p) { - bool ok = true; - - if (is_wellknown_msg(p, UPB_WELLKNOWN_TIMESTAMP) || - is_wellknown_msg(p, UPB_WELLKNOWN_DURATION)) { - multipart_end(p); - return true; - } - - if (p->top->f == NULL) { - multipart_end(p); - return true; - } - - if (p->top->is_any) { - return end_any_stringval(p); - } - - switch (upb_fielddef_type(p->top->f)) { - case UPB_TYPE_BYTES: - if (!base64_push(p, getsel_for_handlertype(p, UPB_HANDLER_STRING), - p->accumulated, p->accumulated_len)) { - return false; - } - /* Fall through. */ - - case UPB_TYPE_STRING: { - upb_selector_t sel = getsel_for_handlertype(p, UPB_HANDLER_ENDSTR); - upb_sink_endstr(p->top->sink, sel); - p->top--; - break; - } - - case UPB_TYPE_ENUM: { - /* Resolve enum symbolic name to integer value. */ - const upb_enumdef *enumdef = upb_fielddef_enumsubdef(p->top->f); - - size_t len; - const char *buf = accumulate_getptr(p, &len); - - int32_t int_val = 0; - ok = upb_enumdef_ntoi(enumdef, buf, len, &int_val); - - if (ok) { - upb_selector_t sel = parser_getsel(p); - upb_sink_putint32(p->top->sink, sel, int_val); - } else { - upb_status_seterrf(p->status, "Enum value unknown: '%.*s'", len, buf); - } - - break; - } - - case UPB_TYPE_INT32: - case UPB_TYPE_INT64: - case UPB_TYPE_UINT32: - case UPB_TYPE_UINT64: - case UPB_TYPE_DOUBLE: - case UPB_TYPE_FLOAT: - ok = parse_number(p, true); - break; - - default: - UPB_ASSERT(false); - upb_status_seterrmsg(p->status, "Internal error in JSON decoder"); - ok = false; - break; - } - - multipart_end(p); - - return ok; -} - -static bool end_stringval(upb_json_parser *p) { - /* FieldMask's stringvals have been ended when handling them. Only need to - * close FieldMask here.*/ - if (does_fieldmask_end(p)) { - end_fieldmask_object(p); - if (!is_top_level(p)) { - end_subobject(p); - } - return true; - } - - if (!end_stringval_nontop(p)) { - return false; - } - - if (does_string_wrapper_end(p)) { - end_wrapper_object(p); - if (!is_top_level(p)) { - end_subobject(p); - } - return true; - } - - if (is_wellknown_msg(p, UPB_WELLKNOWN_VALUE)) { - end_value_object(p); - if (!is_top_level(p)) { - end_subobject(p); - } - return true; - } - - if (is_wellknown_msg(p, UPB_WELLKNOWN_TIMESTAMP) || - is_wellknown_msg(p, UPB_WELLKNOWN_DURATION) || - is_wellknown_msg(p, UPB_WELLKNOWN_FIELDMASK)) { - end_object(p); - if (!is_top_level(p)) { - end_subobject(p); - } - return true; - } - - return true; -} - -static void start_duration_base(upb_json_parser *p, const char *ptr) { - capture_begin(p, ptr); -} - -static bool end_duration_base(upb_json_parser *p, const char *ptr) { - size_t len; - const char *buf; - char seconds_buf[14]; - char nanos_buf[12]; - char *end; - int64_t seconds = 0; - int32_t nanos = 0; - double val = 0.0; - const char *seconds_membername = "seconds"; - const char *nanos_membername = "nanos"; - size_t fraction_start; - - if (!capture_end(p, ptr)) { - return false; - } - - buf = accumulate_getptr(p, &len); - - memset(seconds_buf, 0, 14); - memset(nanos_buf, 0, 12); - - /* Find out base end. The maximus duration is 315576000000, which cannot be - * represented by double without losing precision. Thus, we need to handle - * fraction and base separately. */ - for (fraction_start = 0; fraction_start < len && buf[fraction_start] != '.'; - fraction_start++); - - /* Parse base */ - memcpy(seconds_buf, buf, fraction_start); - seconds = strtol(seconds_buf, &end, 10); - if (errno == ERANGE || end != seconds_buf + fraction_start) { - upb_status_seterrf(p->status, "error parsing duration: %s", - seconds_buf); - return false; - } - - if (seconds > 315576000000) { - upb_status_seterrf(p->status, "error parsing duration: " - "maximum acceptable value is " - "315576000000"); - return false; - } - - if (seconds < -315576000000) { - upb_status_seterrf(p->status, "error parsing duration: " - "minimum acceptable value is " - "-315576000000"); - return false; - } - - /* Parse fraction */ - nanos_buf[0] = '0'; - memcpy(nanos_buf + 1, buf + fraction_start, len - fraction_start); - val = strtod(nanos_buf, &end); - if (errno == ERANGE || end != nanos_buf + len - fraction_start + 1) { - upb_status_seterrf(p->status, "error parsing duration: %s", - nanos_buf); - return false; - } - - nanos = val * 1000000000; - if (seconds < 0) nanos = -nanos; - - /* Clean up buffer */ - multipart_end(p); - - /* Set seconds */ - start_member(p); - capture_begin(p, seconds_membername); - capture_end(p, seconds_membername + 7); - end_membername(p); - upb_sink_putint64(p->top->sink, parser_getsel(p), seconds); - end_member(p); - - /* Set nanos */ - start_member(p); - capture_begin(p, nanos_membername); - capture_end(p, nanos_membername + 5); - end_membername(p); - upb_sink_putint32(p->top->sink, parser_getsel(p), nanos); - end_member(p); - - /* Continue previous arena */ - multipart_startaccum(p); - - return true; -} - -static int parse_timestamp_number(upb_json_parser *p) { - size_t len; - const char *buf; - int val; - - /* atoi() and friends unfortunately do not support specifying the length of - * the input string, so we need to force a copy into a NULL-terminated buffer. */ - multipart_text(p, "\0", 1, false); - - buf = accumulate_getptr(p, &len); - val = atoi(buf); - multipart_end(p); - multipart_startaccum(p); - - return val; -} - -static void start_year(upb_json_parser *p, const char *ptr) { - capture_begin(p, ptr); -} - -static bool end_year(upb_json_parser *p, const char *ptr) { - if (!capture_end(p, ptr)) { - return false; - } - p->tm.tm_year = parse_timestamp_number(p) - 1900; - return true; -} - -static void start_month(upb_json_parser *p, const char *ptr) { - capture_begin(p, ptr); -} - -static bool end_month(upb_json_parser *p, const char *ptr) { - if (!capture_end(p, ptr)) { - return false; - } - p->tm.tm_mon = parse_timestamp_number(p) - 1; - return true; -} - -static void start_day(upb_json_parser *p, const char *ptr) { - capture_begin(p, ptr); -} - -static bool end_day(upb_json_parser *p, const char *ptr) { - if (!capture_end(p, ptr)) { - return false; - } - p->tm.tm_mday = parse_timestamp_number(p); - return true; -} - -static void start_hour(upb_json_parser *p, const char *ptr) { - capture_begin(p, ptr); -} - -static bool end_hour(upb_json_parser *p, const char *ptr) { - if (!capture_end(p, ptr)) { - return false; - } - p->tm.tm_hour = parse_timestamp_number(p); - return true; -} - -static void start_minute(upb_json_parser *p, const char *ptr) { - capture_begin(p, ptr); -} - -static bool end_minute(upb_json_parser *p, const char *ptr) { - if (!capture_end(p, ptr)) { - return false; - } - p->tm.tm_min = parse_timestamp_number(p); - return true; -} - -static void start_second(upb_json_parser *p, const char *ptr) { - capture_begin(p, ptr); -} - -static bool end_second(upb_json_parser *p, const char *ptr) { - if (!capture_end(p, ptr)) { - return false; - } - p->tm.tm_sec = parse_timestamp_number(p); - return true; -} - -static void start_timestamp_base(upb_json_parser *p) { - memset(&p->tm, 0, sizeof(struct tm)); -} - -static void start_timestamp_fraction(upb_json_parser *p, const char *ptr) { - capture_begin(p, ptr); -} - -static bool end_timestamp_fraction(upb_json_parser *p, const char *ptr) { - size_t len; - const char *buf; - char nanos_buf[12]; - char *end; - double val = 0.0; - int32_t nanos; - const char *nanos_membername = "nanos"; - - memset(nanos_buf, 0, 12); - - if (!capture_end(p, ptr)) { - return false; - } - - buf = accumulate_getptr(p, &len); - - if (len > 10) { - upb_status_seterrf(p->status, - "error parsing timestamp: at most 9-digit fraction."); - return false; - } - - /* Parse nanos */ - nanos_buf[0] = '0'; - memcpy(nanos_buf + 1, buf, len); - val = strtod(nanos_buf, &end); - - if (errno == ERANGE || end != nanos_buf + len + 1) { - upb_status_seterrf(p->status, "error parsing timestamp nanos: %s", - nanos_buf); - return false; - } - - nanos = val * 1000000000; - - /* Clean up previous environment */ - multipart_end(p); - - /* Set nanos */ - start_member(p); - capture_begin(p, nanos_membername); - capture_end(p, nanos_membername + 5); - end_membername(p); - upb_sink_putint32(p->top->sink, parser_getsel(p), nanos); - end_member(p); - - /* Continue previous environment */ - multipart_startaccum(p); - - return true; -} - -static void start_timestamp_zone(upb_json_parser *p, const char *ptr) { - capture_begin(p, ptr); -} - -static bool end_timestamp_zone(upb_json_parser *p, const char *ptr) { - size_t len; - const char *buf; - int hours; - int64_t seconds; - const char *seconds_membername = "seconds"; - - if (!capture_end(p, ptr)) { - return false; - } - - buf = accumulate_getptr(p, &len); - - if (buf[0] != 'Z') { - if (sscanf(buf + 1, "%2d:00", &hours) != 1) { - upb_status_seterrf(p->status, "error parsing timestamp offset"); - return false; - } - - if (buf[0] == '+') { - hours = -hours; - } - - p->tm.tm_hour += hours; - } - - /* Normalize tm */ - seconds = mktime(&p->tm); - - /* Check timestamp boundary */ - if (seconds < -62135596800) { - upb_status_seterrf(p->status, "error parsing timestamp: " - "minimum acceptable value is " - "0001-01-01T00:00:00Z"); - return false; - } - - /* Clean up previous environment */ - multipart_end(p); - - /* Set seconds */ - start_member(p); - capture_begin(p, seconds_membername); - capture_end(p, seconds_membername + 7); - end_membername(p); - upb_sink_putint64(p->top->sink, parser_getsel(p), seconds); - end_member(p); - - /* Continue previous environment */ - multipart_startaccum(p); - - return true; -} - -static void start_fieldmask_path_text(upb_json_parser *p, const char *ptr) { - capture_begin(p, ptr); -} - -static bool end_fieldmask_path_text(upb_json_parser *p, const char *ptr) { - return capture_end(p, ptr); -} - -static bool start_fieldmask_path(upb_json_parser *p) { - upb_jsonparser_frame *inner; - upb_selector_t sel; - - if (!check_stack(p)) return false; - - /* Start a new parser frame: parser frames correspond one-to-one with - * handler frames, and string events occur in a sub-frame. */ - inner = start_jsonparser_frame(p); - sel = getsel_for_handlertype(p, UPB_HANDLER_STARTSTR); - upb_sink_startstr(p->top->sink, sel, 0, &inner->sink); - inner->m = p->top->m; - inner->f = p->top->f; - p->top = inner; - - multipart_startaccum(p); - return true; -} - -static bool lower_camel_push( - upb_json_parser *p, upb_selector_t sel, const char *ptr, size_t len) { - const char *limit = ptr + len; - bool first = true; - for (;ptr < limit; ptr++) { - if (*ptr >= 'A' && *ptr <= 'Z' && !first) { - char lower = tolower(*ptr); - upb_sink_putstring(p->top->sink, sel, "_", 1, NULL); - upb_sink_putstring(p->top->sink, sel, &lower, 1, NULL); - } else { - upb_sink_putstring(p->top->sink, sel, ptr, 1, NULL); - } - first = false; - } - return true; -} - -static bool end_fieldmask_path(upb_json_parser *p) { - upb_selector_t sel; - - if (!lower_camel_push( - p, getsel_for_handlertype(p, UPB_HANDLER_STRING), - p->accumulated, p->accumulated_len)) { - return false; - } - - sel = getsel_for_handlertype(p, UPB_HANDLER_ENDSTR); - upb_sink_endstr(p->top->sink, sel); - p->top--; - - multipart_end(p); - return true; -} - -static void start_member(upb_json_parser *p) { - UPB_ASSERT(!p->top->f); - multipart_startaccum(p); -} - -/* Helper: invoked during parse_mapentry() to emit the mapentry message's key - * field based on the current contents of the accumulate buffer. */ -static bool parse_mapentry_key(upb_json_parser *p) { - - size_t len; - const char *buf = accumulate_getptr(p, &len); - - /* Emit the key field. We do a bit of ad-hoc parsing here because the - * parser state machine has already decided that this is a string field - * name, and we are reinterpreting it as some arbitrary key type. In - * particular, integer and bool keys are quoted, so we need to parse the - * quoted string contents here. */ - - p->top->f = upb_msgdef_itof(p->top->m, UPB_MAPENTRY_KEY); - if (p->top->f == NULL) { - upb_status_seterrmsg(p->status, "mapentry message has no key"); - return false; - } - switch (upb_fielddef_type(p->top->f)) { - case UPB_TYPE_INT32: - case UPB_TYPE_INT64: - case UPB_TYPE_UINT32: - case UPB_TYPE_UINT64: - /* Invoke end_number. The accum buffer has the number's text already. */ - if (!parse_number(p, true)) { - return false; - } - break; - case UPB_TYPE_BOOL: - if (len == 4 && !strncmp(buf, "true", 4)) { - if (!parser_putbool(p, true)) { - return false; - } - } else if (len == 5 && !strncmp(buf, "false", 5)) { - if (!parser_putbool(p, false)) { - return false; - } - } else { - upb_status_seterrmsg(p->status, - "Map bool key not 'true' or 'false'"); - return false; - } - multipart_end(p); - break; - case UPB_TYPE_STRING: - case UPB_TYPE_BYTES: { - upb_sink subsink; - upb_selector_t sel = getsel_for_handlertype(p, UPB_HANDLER_STARTSTR); - upb_sink_startstr(p->top->sink, sel, len, &subsink); - sel = getsel_for_handlertype(p, UPB_HANDLER_STRING); - upb_sink_putstring(subsink, sel, buf, len, NULL); - sel = getsel_for_handlertype(p, UPB_HANDLER_ENDSTR); - upb_sink_endstr(subsink, sel); - multipart_end(p); - break; - } - default: - upb_status_seterrmsg(p->status, "Invalid field type for map key"); - return false; - } - - return true; -} - -/* Helper: emit one map entry (as a submessage in the map field sequence). This - * is invoked from end_membername(), at the end of the map entry's key string, - * with the map key in the accumulate buffer. It parses the key from that - * buffer, emits the handler calls to start the mapentry submessage (setting up - * its subframe in the process), and sets up state in the subframe so that the - * value parser (invoked next) will emit the mapentry's value field and then - * end the mapentry message. */ - -static bool handle_mapentry(upb_json_parser *p) { - const upb_fielddef *mapfield; - const upb_msgdef *mapentrymsg; - upb_jsonparser_frame *inner; - upb_selector_t sel; - - /* Map entry: p->top->sink is the seq frame, so we need to start a frame - * for the mapentry itself, and then set |f| in that frame so that the map - * value field is parsed, and also set a flag to end the frame after the - * map-entry value is parsed. */ - if (!check_stack(p)) return false; - - mapfield = p->top->mapfield; - mapentrymsg = upb_fielddef_msgsubdef(mapfield); - - inner = start_jsonparser_frame(p); - p->top->f = mapfield; - sel = getsel_for_handlertype(p, UPB_HANDLER_STARTSUBMSG); - upb_sink_startsubmsg(p->top->sink, sel, &inner->sink); - inner->m = mapentrymsg; - inner->mapfield = mapfield; - - /* Don't set this to true *yet* -- we reuse parsing handlers below to push - * the key field value to the sink, and these handlers will pop the frame - * if they see is_mapentry (when invoked by the parser state machine, they - * would have just seen the map-entry value, not key). */ - inner->is_mapentry = false; - p->top = inner; - - /* send STARTMSG in submsg frame. */ - upb_sink_startmsg(p->top->sink); - - parse_mapentry_key(p); - - /* Set up the value field to receive the map-entry value. */ - p->top->f = upb_msgdef_itof(p->top->m, UPB_MAPENTRY_VALUE); - p->top->is_mapentry = true; /* set up to pop frame after value is parsed. */ - p->top->mapfield = mapfield; - if (p->top->f == NULL) { - upb_status_seterrmsg(p->status, "mapentry message has no value"); - return false; - } - - return true; -} - -static bool end_membername(upb_json_parser *p) { - UPB_ASSERT(!p->top->f); - - if (!p->top->m) { - p->top->is_unknown_field = true; - multipart_end(p); - return true; - } - - if (p->top->is_any) { - return end_any_membername(p); - } else if (p->top->is_map) { - return handle_mapentry(p); - } else { - size_t len; - const char *buf = accumulate_getptr(p, &len); - upb_value v; - - if (upb_strtable_lookup2(p->top->name_table, buf, len, &v)) { - p->top->f = upb_value_getconstptr(v); - multipart_end(p); - - return true; - } else if (p->ignore_json_unknown) { - p->top->is_unknown_field = true; - multipart_end(p); - return true; - } else { - upb_status_seterrf(p->status, "No such field: %.*s\n", (int)len, buf); - return false; - } - } -} - -static bool end_any_membername(upb_json_parser *p) { - size_t len; - const char *buf = accumulate_getptr(p, &len); - upb_value v; - - if (len == 5 && strncmp(buf, "@type", len) == 0) { - upb_strtable_lookup2(p->top->name_table, "type_url", 8, &v); - p->top->f = upb_value_getconstptr(v); - multipart_end(p); - return true; - } else { - p->top->is_unknown_field = true; - multipart_end(p); - return true; - } -} - -static void end_member(upb_json_parser *p) { - /* If we just parsed a map-entry value, end that frame too. */ - if (p->top->is_mapentry) { - upb_selector_t sel; - bool ok; - const upb_fielddef *mapfield; - - UPB_ASSERT(p->top > p->stack); - /* send ENDMSG on submsg. */ - upb_sink_endmsg(p->top->sink, p->status); - mapfield = p->top->mapfield; - - /* send ENDSUBMSG in repeated-field-of-mapentries frame. */ - p->top--; - ok = upb_handlers_getselector(mapfield, UPB_HANDLER_ENDSUBMSG, &sel); - UPB_ASSERT(ok); - upb_sink_endsubmsg(p->top->sink, sel); - } - - p->top->f = NULL; - p->top->is_unknown_field = false; -} - -static void start_any_member(upb_json_parser *p, const char *ptr) { - start_member(p); - json_parser_any_frame_set_after_type_url_start_once(p->top->any_frame, ptr); -} - -static void end_any_member(upb_json_parser *p, const char *ptr) { - json_parser_any_frame_set_before_type_url_end(p->top->any_frame, ptr); - end_member(p); -} - -static bool start_subobject(upb_json_parser *p) { - if (p->top->is_unknown_field) { - if (!check_stack(p)) return false; - - p->top = start_jsonparser_frame(p); - return true; - } - - if (upb_fielddef_ismap(p->top->f)) { - upb_jsonparser_frame *inner; - upb_selector_t sel; - - /* Beginning of a map. Start a new parser frame in a repeated-field - * context. */ - if (!check_stack(p)) return false; - - inner = start_jsonparser_frame(p); - sel = getsel_for_handlertype(p, UPB_HANDLER_STARTSEQ); - upb_sink_startseq(p->top->sink, sel, &inner->sink); - inner->m = upb_fielddef_msgsubdef(p->top->f); - inner->mapfield = p->top->f; - inner->is_map = true; - p->top = inner; - - return true; - } else if (upb_fielddef_issubmsg(p->top->f)) { - upb_jsonparser_frame *inner; - upb_selector_t sel; - - /* Beginning of a subobject. Start a new parser frame in the submsg - * context. */ - if (!check_stack(p)) return false; - - inner = start_jsonparser_frame(p); - sel = getsel_for_handlertype(p, UPB_HANDLER_STARTSUBMSG); - upb_sink_startsubmsg(p->top->sink, sel, &inner->sink); - inner->m = upb_fielddef_msgsubdef(p->top->f); - set_name_table(p, inner); - p->top = inner; - - if (is_wellknown_msg(p, UPB_WELLKNOWN_ANY)) { - p->top->is_any = true; - p->top->any_frame = json_parser_any_frame_new(p); - } else { - p->top->is_any = false; - p->top->any_frame = NULL; - } - - return true; - } else { - upb_status_seterrf(p->status, - "Object specified for non-message/group field: %s", - upb_fielddef_name(p->top->f)); - return false; - } -} - -static bool start_subobject_full(upb_json_parser *p) { - if (is_top_level(p)) { - if (is_wellknown_msg(p, UPB_WELLKNOWN_VALUE)) { - start_value_object(p, VALUE_STRUCTVALUE); - if (!start_subobject(p)) return false; - start_structvalue_object(p); - } else if (is_wellknown_msg(p, UPB_WELLKNOWN_STRUCT)) { - start_structvalue_object(p); - } else { - return true; - } - } else if (is_wellknown_field(p, UPB_WELLKNOWN_STRUCT)) { - if (!start_subobject(p)) return false; - start_structvalue_object(p); - } else if (is_wellknown_field(p, UPB_WELLKNOWN_VALUE)) { - if (!start_subobject(p)) return false; - start_value_object(p, VALUE_STRUCTVALUE); - if (!start_subobject(p)) return false; - start_structvalue_object(p); - } - - return start_subobject(p); -} - -static void end_subobject(upb_json_parser *p) { - if (is_top_level(p)) { - return; - } - - if (p->top->is_map) { - upb_selector_t sel; - p->top--; - sel = getsel_for_handlertype(p, UPB_HANDLER_ENDSEQ); - upb_sink_endseq(p->top->sink, sel); - } else { - upb_selector_t sel; - bool is_unknown = p->top->m == NULL; - p->top--; - if (!is_unknown) { - sel = getsel_for_handlertype(p, UPB_HANDLER_ENDSUBMSG); - upb_sink_endsubmsg(p->top->sink, sel); - } - } -} - -static void end_subobject_full(upb_json_parser *p) { - end_subobject(p); - - if (is_wellknown_msg(p, UPB_WELLKNOWN_STRUCT)) { - end_structvalue_object(p); - if (!is_top_level(p)) { - end_subobject(p); - } - } - - if (is_wellknown_msg(p, UPB_WELLKNOWN_VALUE)) { - end_value_object(p); - if (!is_top_level(p)) { - end_subobject(p); - } - } -} - -static bool start_array(upb_json_parser *p) { - upb_jsonparser_frame *inner; - upb_selector_t sel; - - if (is_top_level(p)) { - if (is_wellknown_msg(p, UPB_WELLKNOWN_VALUE)) { - start_value_object(p, VALUE_LISTVALUE); - if (!start_subobject(p)) return false; - start_listvalue_object(p); - } else if (is_wellknown_msg(p, UPB_WELLKNOWN_LISTVALUE)) { - start_listvalue_object(p); - } else { - return false; - } - } else if (is_wellknown_field(p, UPB_WELLKNOWN_LISTVALUE) && - (!upb_fielddef_isseq(p->top->f) || - p->top->is_repeated)) { - if (!start_subobject(p)) return false; - start_listvalue_object(p); - } else if (is_wellknown_field(p, UPB_WELLKNOWN_VALUE) && - (!upb_fielddef_isseq(p->top->f) || - p->top->is_repeated)) { - if (!start_subobject(p)) return false; - start_value_object(p, VALUE_LISTVALUE); - if (!start_subobject(p)) return false; - start_listvalue_object(p); - } - - if (p->top->is_unknown_field) { - inner = start_jsonparser_frame(p); - inner->is_unknown_field = true; - p->top = inner; - - return true; - } - - if (!upb_fielddef_isseq(p->top->f)) { - upb_status_seterrf(p->status, - "Array specified for non-repeated field: %s", - upb_fielddef_name(p->top->f)); - return false; - } - - if (!check_stack(p)) return false; - - inner = start_jsonparser_frame(p); - sel = getsel_for_handlertype(p, UPB_HANDLER_STARTSEQ); - upb_sink_startseq(p->top->sink, sel, &inner->sink); - inner->m = p->top->m; - inner->f = p->top->f; - inner->is_repeated = true; - p->top = inner; - - return true; -} - -static void end_array(upb_json_parser *p) { - upb_selector_t sel; - - UPB_ASSERT(p->top > p->stack); - - p->top--; - - if (p->top->is_unknown_field) { - return; - } - - sel = getsel_for_handlertype(p, UPB_HANDLER_ENDSEQ); - upb_sink_endseq(p->top->sink, sel); - - if (is_wellknown_msg(p, UPB_WELLKNOWN_LISTVALUE)) { - end_listvalue_object(p); - if (!is_top_level(p)) { - end_subobject(p); - } - } - - if (is_wellknown_msg(p, UPB_WELLKNOWN_VALUE)) { - end_value_object(p); - if (!is_top_level(p)) { - end_subobject(p); - } - } -} - -static void start_object(upb_json_parser *p) { - if (!p->top->is_map && p->top->m != NULL) { - upb_sink_startmsg(p->top->sink); - } -} - -static void end_object(upb_json_parser *p) { - if (!p->top->is_map && p->top->m != NULL) { - upb_sink_endmsg(p->top->sink, p->status); - } -} - -static void start_any_object(upb_json_parser *p, const char *ptr) { - start_object(p); - p->top->any_frame->before_type_url_start = ptr; - p->top->any_frame->before_type_url_end = ptr; -} - -static bool end_any_object(upb_json_parser *p, const char *ptr) { - const char *value_membername = "value"; - bool is_well_known_packed = false; - const char *packed_end = ptr + 1; - upb_selector_t sel; - upb_jsonparser_frame *inner; - - if (json_parser_any_frame_has_value(p->top->any_frame) && - !json_parser_any_frame_has_type_url(p->top->any_frame)) { - upb_status_seterrmsg(p->status, "No valid type url"); - return false; - } - - /* Well known types data is represented as value field. */ - if (upb_msgdef_wellknowntype(p->top->any_frame->parser->top->m) != - UPB_WELLKNOWN_UNSPECIFIED) { - is_well_known_packed = true; - - if (json_parser_any_frame_has_value_before_type_url(p->top->any_frame)) { - p->top->any_frame->before_type_url_start = - memchr(p->top->any_frame->before_type_url_start, ':', - p->top->any_frame->before_type_url_end - - p->top->any_frame->before_type_url_start); - if (p->top->any_frame->before_type_url_start == NULL) { - upb_status_seterrmsg(p->status, "invalid data for well known type."); - return false; - } - p->top->any_frame->before_type_url_start++; - } - - if (json_parser_any_frame_has_value_after_type_url(p->top->any_frame)) { - p->top->any_frame->after_type_url_start = - memchr(p->top->any_frame->after_type_url_start, ':', - (ptr + 1) - - p->top->any_frame->after_type_url_start); - if (p->top->any_frame->after_type_url_start == NULL) { - upb_status_seterrmsg(p->status, "Invalid data for well known type."); - return false; - } - p->top->any_frame->after_type_url_start++; - packed_end = ptr; - } - } - - if (json_parser_any_frame_has_value_before_type_url(p->top->any_frame)) { - if (!parse(p->top->any_frame->parser, NULL, - p->top->any_frame->before_type_url_start, - p->top->any_frame->before_type_url_end - - p->top->any_frame->before_type_url_start, NULL)) { - return false; - } - } else { - if (!is_well_known_packed) { - if (!parse(p->top->any_frame->parser, NULL, "{", 1, NULL)) { - return false; - } - } - } - - if (json_parser_any_frame_has_value_before_type_url(p->top->any_frame) && - json_parser_any_frame_has_value_after_type_url(p->top->any_frame)) { - if (!parse(p->top->any_frame->parser, NULL, ",", 1, NULL)) { - return false; - } - } - - if (json_parser_any_frame_has_value_after_type_url(p->top->any_frame)) { - if (!parse(p->top->any_frame->parser, NULL, - p->top->any_frame->after_type_url_start, - packed_end - p->top->any_frame->after_type_url_start, NULL)) { - return false; - } - } else { - if (!is_well_known_packed) { - if (!parse(p->top->any_frame->parser, NULL, "}", 1, NULL)) { - return false; - } - } - } - - if (!end(p->top->any_frame->parser, NULL)) { - return false; - } - - p->top->is_any = false; - - /* Set value */ - start_member(p); - capture_begin(p, value_membername); - capture_end(p, value_membername + 5); - end_membername(p); - - if (!check_stack(p)) return false; - inner = p->top + 1; - - sel = getsel_for_handlertype(p, UPB_HANDLER_STARTSTR); - upb_sink_startstr(p->top->sink, sel, 0, &inner->sink); - sel = getsel_for_handlertype(p, UPB_HANDLER_STRING); - upb_sink_putstring(inner->sink, sel, p->top->any_frame->stringsink.ptr, - p->top->any_frame->stringsink.len, NULL); - sel = getsel_for_handlertype(p, UPB_HANDLER_ENDSTR); - upb_sink_endstr(inner->sink, sel); - - end_member(p); - - end_object(p); - - /* Deallocate any parse frame. */ - json_parser_any_frame_free(p->top->any_frame); - - return true; -} - -static bool is_string_wrapper(const upb_msgdef *m) { - upb_wellknowntype_t type = upb_msgdef_wellknowntype(m); - return type == UPB_WELLKNOWN_STRINGVALUE || - type == UPB_WELLKNOWN_BYTESVALUE; -} - -static bool is_fieldmask(const upb_msgdef *m) { - upb_wellknowntype_t type = upb_msgdef_wellknowntype(m); - return type == UPB_WELLKNOWN_FIELDMASK; -} - -static void start_fieldmask_object(upb_json_parser *p) { - const char *membername = "paths"; - - start_object(p); - - /* Set up context for parsing value */ - start_member(p); - capture_begin(p, membername); - capture_end(p, membername + 5); - end_membername(p); - - start_array(p); -} - -static void end_fieldmask_object(upb_json_parser *p) { - end_array(p); - end_member(p); - end_object(p); -} - -static void start_wrapper_object(upb_json_parser *p) { - const char *membername = "value"; - - start_object(p); - - /* Set up context for parsing value */ - start_member(p); - capture_begin(p, membername); - capture_end(p, membername + 5); - end_membername(p); -} - -static void end_wrapper_object(upb_json_parser *p) { - end_member(p); - end_object(p); -} - -static void start_value_object(upb_json_parser *p, int value_type) { - const char *nullmember = "null_value"; - const char *numbermember = "number_value"; - const char *stringmember = "string_value"; - const char *boolmember = "bool_value"; - const char *structmember = "struct_value"; - const char *listmember = "list_value"; - const char *membername = ""; - - switch (value_type) { - case VALUE_NULLVALUE: - membername = nullmember; - break; - case VALUE_NUMBERVALUE: - membername = numbermember; - break; - case VALUE_STRINGVALUE: - membername = stringmember; - break; - case VALUE_BOOLVALUE: - membername = boolmember; - break; - case VALUE_STRUCTVALUE: - membername = structmember; - break; - case VALUE_LISTVALUE: - membername = listmember; - break; - } - - start_object(p); - - /* Set up context for parsing value */ - start_member(p); - capture_begin(p, membername); - capture_end(p, membername + strlen(membername)); - end_membername(p); -} - -static void end_value_object(upb_json_parser *p) { - end_member(p); - end_object(p); -} - -static void start_listvalue_object(upb_json_parser *p) { - const char *membername = "values"; - - start_object(p); - - /* Set up context for parsing value */ - start_member(p); - capture_begin(p, membername); - capture_end(p, membername + strlen(membername)); - end_membername(p); -} - -static void end_listvalue_object(upb_json_parser *p) { - end_member(p); - end_object(p); -} - -static void start_structvalue_object(upb_json_parser *p) { - const char *membername = "fields"; - - start_object(p); - - /* Set up context for parsing value */ - start_member(p); - capture_begin(p, membername); - capture_end(p, membername + strlen(membername)); - end_membername(p); -} - -static void end_structvalue_object(upb_json_parser *p) { - end_member(p); - end_object(p); -} - -static bool is_top_level(upb_json_parser *p) { - return p->top == p->stack && p->top->f == NULL && !p->top->is_unknown_field; -} - -static bool is_wellknown_msg(upb_json_parser *p, upb_wellknowntype_t type) { - return p->top->m != NULL && upb_msgdef_wellknowntype(p->top->m) == type; -} - -static bool is_wellknown_field(upb_json_parser *p, upb_wellknowntype_t type) { - return p->top->f != NULL && - upb_fielddef_issubmsg(p->top->f) && - (upb_msgdef_wellknowntype(upb_fielddef_msgsubdef(p->top->f)) - == type); -} - -static bool does_number_wrapper_start(upb_json_parser *p) { - return p->top->f != NULL && - upb_fielddef_issubmsg(p->top->f) && - upb_msgdef_isnumberwrapper(upb_fielddef_msgsubdef(p->top->f)); -} - -static bool does_number_wrapper_end(upb_json_parser *p) { - return p->top->m != NULL && upb_msgdef_isnumberwrapper(p->top->m); -} - -static bool is_number_wrapper_object(upb_json_parser *p) { - return p->top->m != NULL && upb_msgdef_isnumberwrapper(p->top->m); -} - -static bool does_string_wrapper_start(upb_json_parser *p) { - return p->top->f != NULL && - upb_fielddef_issubmsg(p->top->f) && - is_string_wrapper(upb_fielddef_msgsubdef(p->top->f)); -} - -static bool does_string_wrapper_end(upb_json_parser *p) { - return p->top->m != NULL && is_string_wrapper(p->top->m); -} - -static bool is_string_wrapper_object(upb_json_parser *p) { - return p->top->m != NULL && is_string_wrapper(p->top->m); -} - -static bool does_fieldmask_start(upb_json_parser *p) { - return p->top->f != NULL && - upb_fielddef_issubmsg(p->top->f) && - is_fieldmask(upb_fielddef_msgsubdef(p->top->f)); -} - -static bool does_fieldmask_end(upb_json_parser *p) { - return p->top->m != NULL && is_fieldmask(p->top->m); -} - -#define CHECK_RETURN_TOP(x) if (!(x)) goto error - - -/* The actual parser **********************************************************/ - -/* What follows is the Ragel parser itself. The language is specified in Ragel - * and the actions call our C functions above. - * - * Ragel has an extensive set of functionality, and we use only a small part of - * it. There are many action types but we only use a few: - * - * ">" -- transition into a machine - * "%" -- transition out of a machine - * "@" -- transition into a final state of a machine. - * - * "@" transitions are tricky because a machine can transition into a final - * state repeatedly. But in some cases we know this can't happen, for example - * a string which is delimited by a final '"' can only transition into its - * final state once, when the closing '"' is seen. */ - - -#line 2749 "upb/json/parser.rl" - - - -#line 2552 "upb/json/parser.c" -static const char _json_actions[] = { - 0, 1, 0, 1, 1, 1, 3, 1, - 4, 1, 6, 1, 7, 1, 8, 1, - 9, 1, 11, 1, 12, 1, 13, 1, - 14, 1, 15, 1, 16, 1, 17, 1, - 18, 1, 19, 1, 20, 1, 22, 1, - 23, 1, 24, 1, 35, 1, 37, 1, - 39, 1, 40, 1, 42, 1, 43, 1, - 44, 1, 46, 1, 48, 1, 49, 1, - 50, 1, 51, 1, 53, 1, 54, 2, - 4, 9, 2, 5, 6, 2, 7, 3, - 2, 7, 9, 2, 21, 26, 2, 25, - 10, 2, 27, 28, 2, 29, 30, 2, - 32, 34, 2, 33, 31, 2, 38, 36, - 2, 40, 42, 2, 45, 2, 2, 46, - 54, 2, 47, 36, 2, 49, 54, 2, - 50, 54, 2, 51, 54, 2, 52, 41, - 2, 53, 54, 3, 32, 34, 35, 4, - 21, 26, 27, 28 -}; - -static const short _json_key_offsets[] = { - 0, 0, 12, 13, 18, 23, 28, 29, - 30, 31, 32, 33, 34, 35, 36, 37, - 38, 43, 44, 48, 53, 58, 63, 67, - 71, 74, 77, 79, 83, 87, 89, 91, - 96, 98, 100, 109, 115, 121, 127, 133, - 135, 139, 142, 144, 146, 149, 150, 154, - 156, 158, 160, 162, 163, 165, 167, 168, - 170, 172, 173, 175, 177, 178, 180, 182, - 183, 185, 187, 191, 193, 195, 196, 197, - 198, 199, 201, 206, 208, 210, 212, 221, - 222, 222, 222, 227, 232, 237, 238, 239, - 240, 241, 241, 242, 243, 244, 244, 245, - 246, 247, 247, 252, 253, 257, 262, 267, - 272, 276, 276, 279, 282, 285, 288, 291, - 294, 294, 294, 294, 294, 294 -}; - -static const char _json_trans_keys[] = { - 32, 34, 45, 91, 102, 110, 116, 123, - 9, 13, 48, 57, 34, 32, 93, 125, - 9, 13, 32, 44, 93, 9, 13, 32, - 93, 125, 9, 13, 97, 108, 115, 101, - 117, 108, 108, 114, 117, 101, 32, 34, - 125, 9, 13, 34, 32, 58, 9, 13, - 32, 93, 125, 9, 13, 32, 44, 125, - 9, 13, 32, 44, 125, 9, 13, 32, - 34, 9, 13, 45, 48, 49, 57, 48, - 49, 57, 46, 69, 101, 48, 57, 69, - 101, 48, 57, 43, 45, 48, 57, 48, - 57, 48, 57, 46, 69, 101, 48, 57, - 34, 92, 34, 92, 34, 47, 92, 98, - 102, 110, 114, 116, 117, 48, 57, 65, - 70, 97, 102, 48, 57, 65, 70, 97, - 102, 48, 57, 65, 70, 97, 102, 48, - 57, 65, 70, 97, 102, 34, 92, 45, - 48, 49, 57, 48, 49, 57, 46, 115, - 48, 57, 115, 48, 57, 34, 46, 115, - 48, 57, 48, 57, 48, 57, 48, 57, - 48, 57, 45, 48, 57, 48, 57, 45, - 48, 57, 48, 57, 84, 48, 57, 48, - 57, 58, 48, 57, 48, 57, 58, 48, - 57, 48, 57, 43, 45, 46, 90, 48, - 57, 48, 57, 58, 48, 48, 34, 48, - 57, 43, 45, 90, 48, 57, 34, 44, - 34, 44, 34, 44, 34, 45, 91, 102, - 110, 116, 123, 48, 57, 34, 32, 93, - 125, 9, 13, 32, 44, 93, 9, 13, - 32, 93, 125, 9, 13, 97, 108, 115, - 101, 117, 108, 108, 114, 117, 101, 32, - 34, 125, 9, 13, 34, 32, 58, 9, - 13, 32, 93, 125, 9, 13, 32, 44, - 125, 9, 13, 32, 44, 125, 9, 13, - 32, 34, 9, 13, 32, 9, 13, 32, - 9, 13, 32, 9, 13, 32, 9, 13, - 32, 9, 13, 32, 9, 13, 0 -}; - -static const char _json_single_lengths[] = { - 0, 8, 1, 3, 3, 3, 1, 1, - 1, 1, 1, 1, 1, 1, 1, 1, - 3, 1, 2, 3, 3, 3, 2, 2, - 1, 3, 0, 2, 2, 0, 0, 3, - 2, 2, 9, 0, 0, 0, 0, 2, - 2, 1, 2, 0, 1, 1, 2, 0, - 0, 0, 0, 1, 0, 0, 1, 0, - 0, 1, 0, 0, 1, 0, 0, 1, - 0, 0, 4, 0, 0, 1, 1, 1, - 1, 0, 3, 2, 2, 2, 7, 1, - 0, 0, 3, 3, 3, 1, 1, 1, - 1, 0, 1, 1, 1, 0, 1, 1, - 1, 0, 3, 1, 2, 3, 3, 3, - 2, 0, 1, 1, 1, 1, 1, 1, - 0, 0, 0, 0, 0, 0 -}; - -static const char _json_range_lengths[] = { - 0, 2, 0, 1, 1, 1, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 1, 0, 1, 1, 1, 1, 1, 1, - 1, 0, 1, 1, 1, 1, 1, 1, - 0, 0, 0, 3, 3, 3, 3, 0, - 1, 1, 0, 1, 1, 0, 1, 1, - 1, 1, 1, 0, 1, 1, 0, 1, - 1, 0, 1, 1, 0, 1, 1, 0, - 1, 1, 0, 1, 1, 0, 0, 0, - 0, 1, 1, 0, 0, 0, 1, 0, - 0, 0, 1, 1, 1, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 1, 0, 1, 1, 1, 1, - 1, 0, 1, 1, 1, 1, 1, 1, - 0, 0, 0, 0, 0, 0 -}; - -static const short _json_index_offsets[] = { - 0, 0, 11, 13, 18, 23, 28, 30, - 32, 34, 36, 38, 40, 42, 44, 46, - 48, 53, 55, 59, 64, 69, 74, 78, - 82, 85, 89, 91, 95, 99, 101, 103, - 108, 111, 114, 124, 128, 132, 136, 140, - 143, 147, 150, 153, 155, 158, 160, 164, - 166, 168, 170, 172, 174, 176, 178, 180, - 182, 184, 186, 188, 190, 192, 194, 196, - 198, 200, 202, 207, 209, 211, 213, 215, - 217, 219, 221, 226, 229, 232, 235, 244, - 246, 247, 248, 253, 258, 263, 265, 267, - 269, 271, 272, 274, 276, 278, 279, 281, - 283, 285, 286, 291, 293, 297, 302, 307, - 312, 316, 317, 320, 323, 326, 329, 332, - 335, 336, 337, 338, 339, 340 -}; - -static const unsigned char _json_indicies[] = { - 0, 2, 3, 4, 5, 6, 7, 8, - 0, 3, 1, 9, 1, 11, 12, 1, - 11, 10, 13, 14, 12, 13, 1, 14, - 1, 1, 14, 10, 15, 1, 16, 1, - 17, 1, 18, 1, 19, 1, 20, 1, - 21, 1, 22, 1, 23, 1, 24, 1, - 25, 26, 27, 25, 1, 28, 1, 29, - 30, 29, 1, 30, 1, 1, 30, 31, - 32, 33, 34, 32, 1, 35, 36, 27, - 35, 1, 36, 26, 36, 1, 37, 38, - 39, 1, 38, 39, 1, 41, 42, 42, - 40, 43, 1, 42, 42, 43, 40, 44, - 44, 45, 1, 45, 1, 45, 40, 41, - 42, 42, 39, 40, 47, 48, 46, 50, - 51, 49, 52, 52, 52, 52, 52, 52, - 52, 52, 53, 1, 54, 54, 54, 1, - 55, 55, 55, 1, 56, 56, 56, 1, - 57, 57, 57, 1, 59, 60, 58, 61, - 62, 63, 1, 64, 65, 1, 66, 67, - 1, 68, 1, 67, 68, 1, 69, 1, - 66, 67, 65, 1, 70, 1, 71, 1, - 72, 1, 73, 1, 74, 1, 75, 1, - 76, 1, 77, 1, 78, 1, 79, 1, - 80, 1, 81, 1, 82, 1, 83, 1, - 84, 1, 85, 1, 86, 1, 87, 1, - 88, 1, 89, 89, 90, 91, 1, 92, - 1, 93, 1, 94, 1, 95, 1, 96, - 1, 97, 1, 98, 1, 99, 99, 100, - 98, 1, 102, 1, 101, 104, 105, 103, - 1, 1, 101, 106, 107, 108, 109, 110, - 111, 112, 107, 1, 113, 1, 114, 115, - 117, 118, 1, 117, 116, 119, 120, 118, - 119, 1, 120, 1, 1, 120, 116, 121, - 1, 122, 1, 123, 1, 124, 1, 125, - 126, 1, 127, 1, 128, 1, 129, 130, - 1, 131, 1, 132, 1, 133, 134, 135, - 136, 134, 1, 137, 1, 138, 139, 138, - 1, 139, 1, 1, 139, 140, 141, 142, - 143, 141, 1, 144, 145, 136, 144, 1, - 145, 135, 145, 1, 146, 147, 147, 1, - 148, 148, 1, 149, 149, 1, 150, 150, - 1, 151, 151, 1, 152, 152, 1, 1, - 1, 1, 1, 1, 1, 0 -}; - -static const char _json_trans_targs[] = { - 1, 0, 2, 107, 3, 6, 10, 13, - 16, 106, 4, 3, 106, 4, 5, 7, - 8, 9, 108, 11, 12, 109, 14, 15, - 110, 16, 17, 111, 18, 18, 19, 20, - 21, 22, 111, 21, 22, 24, 25, 31, - 112, 26, 28, 27, 29, 30, 33, 113, - 34, 33, 113, 34, 32, 35, 36, 37, - 38, 39, 33, 113, 34, 41, 42, 46, - 42, 46, 43, 45, 44, 114, 48, 49, - 50, 51, 52, 53, 54, 55, 56, 57, - 58, 59, 60, 61, 62, 63, 64, 65, - 66, 67, 73, 72, 68, 69, 70, 71, - 72, 115, 74, 67, 72, 76, 116, 76, - 116, 77, 79, 81, 82, 85, 90, 94, - 98, 80, 117, 117, 83, 82, 80, 83, - 84, 86, 87, 88, 89, 117, 91, 92, - 93, 117, 95, 96, 97, 117, 98, 99, - 105, 100, 100, 101, 102, 103, 104, 105, - 103, 104, 117, 106, 106, 106, 106, 106, - 106 -}; - -static const unsigned char _json_trans_actions[] = { - 0, 0, 113, 107, 53, 0, 0, 0, - 125, 59, 45, 0, 55, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 101, 51, 47, 0, 0, 45, - 49, 49, 104, 0, 0, 0, 0, 0, - 3, 0, 0, 0, 0, 0, 5, 15, - 0, 0, 71, 7, 13, 0, 74, 9, - 9, 9, 77, 80, 11, 37, 37, 37, - 0, 0, 0, 39, 0, 41, 86, 0, - 0, 0, 17, 19, 0, 21, 23, 0, - 25, 27, 0, 29, 31, 0, 33, 35, - 0, 135, 83, 135, 0, 0, 0, 0, - 0, 92, 0, 89, 89, 98, 43, 0, - 131, 95, 113, 107, 53, 0, 0, 0, - 125, 59, 69, 110, 45, 0, 55, 0, - 0, 0, 0, 0, 0, 119, 0, 0, - 0, 122, 0, 0, 0, 116, 0, 101, - 51, 47, 0, 0, 45, 49, 49, 104, - 0, 0, 128, 0, 57, 63, 65, 61, - 67 -}; - -static const unsigned char _json_eof_actions[] = { - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 1, 0, 1, 0, 0, 1, 1, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 57, 63, 65, 61, 67, - 0, 0, 0, 0, 0, 0 -}; - -static const int json_start = 1; - -static const int json_en_number_machine = 23; -static const int json_en_string_machine = 32; -static const int json_en_duration_machine = 40; -static const int json_en_timestamp_machine = 47; -static const int json_en_fieldmask_machine = 75; -static const int json_en_value_machine = 78; -static const int json_en_main = 1; - - -#line 2752 "upb/json/parser.rl" - -size_t parse(void *closure, const void *hd, const char *buf, size_t size, - const upb_bufhandle *handle) { - upb_json_parser *parser = closure; - - /* Variables used by Ragel's generated code. */ - int cs = parser->current_state; - int *stack = parser->parser_stack; - int top = parser->parser_top; - - const char *p = buf; - const char *pe = buf + size; - const char *eof = &eof_ch; - - parser->handle = handle; - - UPB_UNUSED(hd); - UPB_UNUSED(handle); - - capture_resume(parser, buf); - - -#line 2830 "upb/json/parser.c" - { - int _klen; - unsigned int _trans; - const char *_acts; - unsigned int _nacts; - const char *_keys; - - if ( p == pe ) - goto _test_eof; - if ( cs == 0 ) - goto _out; -_resume: - _keys = _json_trans_keys + _json_key_offsets[cs]; - _trans = _json_index_offsets[cs]; - - _klen = _json_single_lengths[cs]; - if ( _klen > 0 ) { - const char *_lower = _keys; - const char *_mid; - const char *_upper = _keys + _klen - 1; - while (1) { - if ( _upper < _lower ) - break; - - _mid = _lower + ((_upper-_lower) >> 1); - if ( (*p) < *_mid ) - _upper = _mid - 1; - else if ( (*p) > *_mid ) - _lower = _mid + 1; - else { - _trans += (unsigned int)(_mid - _keys); - goto _match; - } - } - _keys += _klen; - _trans += _klen; - } - - _klen = _json_range_lengths[cs]; - if ( _klen > 0 ) { - const char *_lower = _keys; - const char *_mid; - const char *_upper = _keys + (_klen<<1) - 2; - while (1) { - if ( _upper < _lower ) - break; - - _mid = _lower + (((_upper-_lower) >> 1) & ~1); - if ( (*p) < _mid[0] ) - _upper = _mid - 2; - else if ( (*p) > _mid[1] ) - _lower = _mid + 2; - else { - _trans += (unsigned int)((_mid - _keys)>>1); - goto _match; - } - } - _trans += _klen; - } - -_match: - _trans = _json_indicies[_trans]; - cs = _json_trans_targs[_trans]; - - if ( _json_trans_actions[_trans] == 0 ) - goto _again; - - _acts = _json_actions + _json_trans_actions[_trans]; - _nacts = (unsigned int) *_acts++; - while ( _nacts-- > 0 ) - { - switch ( *_acts++ ) - { - case 1: -#line 2557 "upb/json/parser.rl" - { p--; {cs = stack[--top]; goto _again;} } - break; - case 2: -#line 2559 "upb/json/parser.rl" - { p--; {stack[top++] = cs; cs = 23;goto _again;} } - break; - case 3: -#line 2563 "upb/json/parser.rl" - { start_text(parser, p); } - break; - case 4: -#line 2564 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_text(parser, p)); } - break; - case 5: -#line 2570 "upb/json/parser.rl" - { start_hex(parser); } - break; - case 6: -#line 2571 "upb/json/parser.rl" - { hexdigit(parser, p); } - break; - case 7: -#line 2572 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_hex(parser)); } - break; - case 8: -#line 2578 "upb/json/parser.rl" - { CHECK_RETURN_TOP(escape(parser, p)); } - break; - case 9: -#line 2584 "upb/json/parser.rl" - { p--; {cs = stack[--top]; goto _again;} } - break; - case 10: -#line 2589 "upb/json/parser.rl" - { start_year(parser, p); } - break; - case 11: -#line 2590 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_year(parser, p)); } - break; - case 12: -#line 2594 "upb/json/parser.rl" - { start_month(parser, p); } - break; - case 13: -#line 2595 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_month(parser, p)); } - break; - case 14: -#line 2599 "upb/json/parser.rl" - { start_day(parser, p); } - break; - case 15: -#line 2600 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_day(parser, p)); } - break; - case 16: -#line 2604 "upb/json/parser.rl" - { start_hour(parser, p); } - break; - case 17: -#line 2605 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_hour(parser, p)); } - break; - case 18: -#line 2609 "upb/json/parser.rl" - { start_minute(parser, p); } - break; - case 19: -#line 2610 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_minute(parser, p)); } - break; - case 20: -#line 2614 "upb/json/parser.rl" - { start_second(parser, p); } - break; - case 21: -#line 2615 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_second(parser, p)); } - break; - case 22: -#line 2620 "upb/json/parser.rl" - { start_duration_base(parser, p); } - break; - case 23: -#line 2621 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_duration_base(parser, p)); } - break; - case 24: -#line 2623 "upb/json/parser.rl" - { p--; {cs = stack[--top]; goto _again;} } - break; - case 25: -#line 2628 "upb/json/parser.rl" - { start_timestamp_base(parser); } - break; - case 26: -#line 2630 "upb/json/parser.rl" - { start_timestamp_fraction(parser, p); } - break; - case 27: -#line 2631 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_timestamp_fraction(parser, p)); } - break; - case 28: -#line 2633 "upb/json/parser.rl" - { start_timestamp_zone(parser, p); } - break; - case 29: -#line 2634 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_timestamp_zone(parser, p)); } - break; - case 30: -#line 2636 "upb/json/parser.rl" - { p--; {cs = stack[--top]; goto _again;} } - break; - case 31: -#line 2641 "upb/json/parser.rl" - { start_fieldmask_path_text(parser, p); } - break; - case 32: -#line 2642 "upb/json/parser.rl" - { end_fieldmask_path_text(parser, p); } - break; - case 33: -#line 2647 "upb/json/parser.rl" - { start_fieldmask_path(parser); } - break; - case 34: -#line 2648 "upb/json/parser.rl" - { end_fieldmask_path(parser); } - break; - case 35: -#line 2654 "upb/json/parser.rl" - { p--; {cs = stack[--top]; goto _again;} } - break; - case 36: -#line 2659 "upb/json/parser.rl" - { - if (is_wellknown_msg(parser, UPB_WELLKNOWN_TIMESTAMP)) { - {stack[top++] = cs; cs = 47;goto _again;} - } else if (is_wellknown_msg(parser, UPB_WELLKNOWN_DURATION)) { - {stack[top++] = cs; cs = 40;goto _again;} - } else if (is_wellknown_msg(parser, UPB_WELLKNOWN_FIELDMASK)) { - {stack[top++] = cs; cs = 75;goto _again;} - } else { - {stack[top++] = cs; cs = 32;goto _again;} - } - } - break; - case 37: -#line 2672 "upb/json/parser.rl" - { p--; {stack[top++] = cs; cs = 78;goto _again;} } - break; - case 38: -#line 2677 "upb/json/parser.rl" - { - if (is_wellknown_msg(parser, UPB_WELLKNOWN_ANY)) { - start_any_member(parser, p); - } else { - start_member(parser); - } - } - break; - case 39: -#line 2684 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_membername(parser)); } - break; - case 40: -#line 2687 "upb/json/parser.rl" - { - if (is_wellknown_msg(parser, UPB_WELLKNOWN_ANY)) { - end_any_member(parser, p); - } else { - end_member(parser); - } - } - break; - case 41: -#line 2698 "upb/json/parser.rl" - { - if (is_wellknown_msg(parser, UPB_WELLKNOWN_ANY)) { - start_any_object(parser, p); - } else { - start_object(parser); - } - } - break; - case 42: -#line 2707 "upb/json/parser.rl" - { - if (is_wellknown_msg(parser, UPB_WELLKNOWN_ANY)) { - CHECK_RETURN_TOP(end_any_object(parser, p)); - } else { - end_object(parser); - } - } - break; - case 43: -#line 2719 "upb/json/parser.rl" - { CHECK_RETURN_TOP(start_array(parser)); } - break; - case 44: -#line 2723 "upb/json/parser.rl" - { end_array(parser); } - break; - case 45: -#line 2728 "upb/json/parser.rl" - { CHECK_RETURN_TOP(start_number(parser, p)); } - break; - case 46: -#line 2729 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_number(parser, p)); } - break; - case 47: -#line 2731 "upb/json/parser.rl" - { CHECK_RETURN_TOP(start_stringval(parser)); } - break; - case 48: -#line 2732 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_stringval(parser)); } - break; - case 49: -#line 2734 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_bool(parser, true)); } - break; - case 50: -#line 2736 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_bool(parser, false)); } - break; - case 51: -#line 2738 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_null(parser)); } - break; - case 52: -#line 2740 "upb/json/parser.rl" - { CHECK_RETURN_TOP(start_subobject_full(parser)); } - break; - case 53: -#line 2741 "upb/json/parser.rl" - { end_subobject_full(parser); } - break; - case 54: -#line 2746 "upb/json/parser.rl" - { p--; {cs = stack[--top]; goto _again;} } - break; -#line 3154 "upb/json/parser.c" - } - } - -_again: - if ( cs == 0 ) - goto _out; - if ( ++p != pe ) - goto _resume; - _test_eof: {} - if ( p == eof ) - { - const char *__acts = _json_actions + _json_eof_actions[cs]; - unsigned int __nacts = (unsigned int) *__acts++; - while ( __nacts-- > 0 ) { - switch ( *__acts++ ) { - case 0: -#line 2555 "upb/json/parser.rl" - { p--; {cs = stack[--top]; if ( p == pe ) - goto _test_eof; -goto _again;} } - break; - case 46: -#line 2729 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_number(parser, p)); } - break; - case 49: -#line 2734 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_bool(parser, true)); } - break; - case 50: -#line 2736 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_bool(parser, false)); } - break; - case 51: -#line 2738 "upb/json/parser.rl" - { CHECK_RETURN_TOP(end_null(parser)); } - break; - case 53: -#line 2741 "upb/json/parser.rl" - { end_subobject_full(parser); } - break; -#line 3196 "upb/json/parser.c" - } - } - } - - _out: {} - } - -#line 2774 "upb/json/parser.rl" - - if (p != pe) { - upb_status_seterrf(parser->status, "Parse error at '%.*s'\n", pe - p, p); - } else { - capture_suspend(parser, &p); - } - -error: - /* Save parsing state back to parser. */ - parser->current_state = cs; - parser->parser_top = top; - - return p - buf; -} - -static bool end(void *closure, const void *hd) { - upb_json_parser *parser = closure; - - /* Prevent compile warning on unused static constants. */ - UPB_UNUSED(json_start); - UPB_UNUSED(json_en_duration_machine); - UPB_UNUSED(json_en_fieldmask_machine); - UPB_UNUSED(json_en_number_machine); - UPB_UNUSED(json_en_string_machine); - UPB_UNUSED(json_en_timestamp_machine); - UPB_UNUSED(json_en_value_machine); - UPB_UNUSED(json_en_main); - - parse(parser, hd, &eof_ch, 0, NULL); - - return parser->current_state >= 106; -} - -static void json_parser_reset(upb_json_parser *p) { - int cs; - int top; - - p->top = p->stack; - init_frame(p->top); - - /* Emit Ragel initialization of the parser. */ - -#line 3247 "upb/json/parser.c" - { - cs = json_start; - top = 0; - } - -#line 2816 "upb/json/parser.rl" - p->current_state = cs; - p->parser_top = top; - accumulate_clear(p); - p->multipart_state = MULTIPART_INACTIVE; - p->capture = NULL; - p->accumulated = NULL; -} - -static upb_json_parsermethod *parsermethod_new(upb_json_codecache *c, - const upb_msgdef *md) { - upb_msg_field_iter i; - upb_alloc *alloc = upb_arena_alloc(c->arena); - - upb_json_parsermethod *m = upb_malloc(alloc, sizeof(*m)); - - m->cache = c; - - upb_byteshandler_init(&m->input_handler_); - upb_byteshandler_setstring(&m->input_handler_, parse, m); - upb_byteshandler_setendstr(&m->input_handler_, end, m); - - upb_strtable_init2(&m->name_table, UPB_CTYPE_CONSTPTR, alloc); - - /* Build name_table */ - - for(upb_msg_field_begin(&i, md); - !upb_msg_field_done(&i); - upb_msg_field_next(&i)) { - const upb_fielddef *f = upb_msg_iter_field(&i); - upb_value v = upb_value_constptr(f); - char *buf; - - /* Add an entry for the JSON name. */ - size_t len = upb_fielddef_getjsonname(f, NULL, 0); - buf = upb_malloc(alloc, len); - upb_fielddef_getjsonname(f, buf, len); - upb_strtable_insert3(&m->name_table, buf, strlen(buf), v, alloc); - - if (strcmp(buf, upb_fielddef_name(f)) != 0) { - /* Since the JSON name is different from the regular field name, add an - * entry for the raw name (compliant proto3 JSON parsers must accept - * both). */ - const char *name = upb_fielddef_name(f); - upb_strtable_insert3(&m->name_table, name, strlen(name), v, alloc); - } - } - - return m; -} - -/* Public API *****************************************************************/ - -upb_json_parser *upb_json_parser_create(upb_arena *arena, - const upb_json_parsermethod *method, - const upb_symtab* symtab, - upb_sink output, - upb_status *status, - bool ignore_json_unknown) { -#ifndef NDEBUG - const size_t size_before = upb_arena_bytesallocated(arena); -#endif - upb_json_parser *p = upb_arena_malloc(arena, sizeof(upb_json_parser)); - if (!p) return false; - - p->arena = arena; - p->method = method; - p->status = status; - p->limit = p->stack + UPB_JSON_MAX_DEPTH; - p->accumulate_buf = NULL; - p->accumulate_buf_size = 0; - upb_bytessink_reset(&p->input_, &method->input_handler_, p); - - json_parser_reset(p); - p->top->sink = output; - p->top->m = upb_handlers_msgdef(output.handlers); - if (is_wellknown_msg(p, UPB_WELLKNOWN_ANY)) { - p->top->is_any = true; - p->top->any_frame = json_parser_any_frame_new(p); - } else { - p->top->is_any = false; - p->top->any_frame = NULL; - } - set_name_table(p, p->top); - p->symtab = symtab; - - p->ignore_json_unknown = ignore_json_unknown; - - /* If this fails, uncomment and increase the value in parser.h. */ - /* fprintf(stderr, "%zd\n", upb_arena_bytesallocated(arena) - size_before); */ - UPB_ASSERT_DEBUGVAR(upb_arena_bytesallocated(arena) - size_before <= - UPB_JSON_PARSER_SIZE); - return p; -} - -upb_bytessink upb_json_parser_input(upb_json_parser *p) { - return p->input_; -} - -const upb_byteshandler *upb_json_parsermethod_inputhandler( - const upb_json_parsermethod *m) { - return &m->input_handler_; -} - -upb_json_codecache *upb_json_codecache_new() { - upb_alloc *alloc; - upb_json_codecache *c; - - c = upb_gmalloc(sizeof(*c)); - - c->arena = upb_arena_new(); - alloc = upb_arena_alloc(c->arena); - - upb_inttable_init2(&c->methods, UPB_CTYPE_CONSTPTR, alloc); - - return c; -} - -void upb_json_codecache_free(upb_json_codecache *c) { - upb_arena_free(c->arena); - upb_gfree(c); -} - -const upb_json_parsermethod *upb_json_codecache_get(upb_json_codecache *c, - const upb_msgdef *md) { - upb_json_parsermethod *m; - upb_value v; - upb_msg_field_iter i; - upb_alloc *alloc = upb_arena_alloc(c->arena); - - if (upb_inttable_lookupptr(&c->methods, md, &v)) { - return upb_value_getconstptr(v); - } - - m = parsermethod_new(c, md); - v = upb_value_constptr(m); - - if (!m) return NULL; - if (!upb_inttable_insertptr2(&c->methods, md, v, alloc)) return NULL; - - /* Populate parser methods for all submessages, so the name tables will - * be available during parsing. */ - for(upb_msg_field_begin(&i, md); - !upb_msg_field_done(&i); - upb_msg_field_next(&i)) { - upb_fielddef *f = upb_msg_iter_field(&i); - - if (upb_fielddef_issubmsg(f)) { - const upb_msgdef *subdef = upb_fielddef_msgsubdef(f); - const upb_json_parsermethod *sub_method = - upb_json_codecache_get(c, subdef); - - if (!sub_method) return NULL; - } - } - - return m; -} -- cgit v1.2.3