зеркало из https://github.com/github/ruby.git
870 строки
25 KiB
Ragel
870 строки
25 KiB
Ragel
#include "../fbuffer/fbuffer.h"
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#include "parser.h"
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#if defined HAVE_RUBY_ENCODING_H
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# define EXC_ENCODING rb_utf8_encoding(),
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# ifndef HAVE_RB_ENC_RAISE
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static void
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enc_raise(rb_encoding *enc, VALUE exc, const char *fmt, ...)
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{
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va_list args;
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VALUE mesg;
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va_start(args, fmt);
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mesg = rb_enc_vsprintf(enc, fmt, args);
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va_end(args);
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rb_exc_raise(rb_exc_new3(exc, mesg));
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}
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# define rb_enc_raise enc_raise
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# endif
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#else
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# define EXC_ENCODING /* nothing */
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# define rb_enc_raise rb_raise
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#endif
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/* unicode */
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static const char digit_values[256] = {
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1,
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-1, -1, -1, -1, -1, -1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
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-1, -1, -1, -1, -1, -1, -1
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};
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static UTF32 unescape_unicode(const unsigned char *p)
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{
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char b;
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UTF32 result = 0;
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b = digit_values[p[0]];
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if (b < 0) return UNI_REPLACEMENT_CHAR;
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result = (result << 4) | (unsigned char)b;
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b = digit_values[p[1]];
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if (b < 0) return UNI_REPLACEMENT_CHAR;
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result = (result << 4) | (unsigned char)b;
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b = digit_values[p[2]];
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if (b < 0) return UNI_REPLACEMENT_CHAR;
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result = (result << 4) | (unsigned char)b;
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b = digit_values[p[3]];
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if (b < 0) return UNI_REPLACEMENT_CHAR;
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result = (result << 4) | (unsigned char)b;
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return result;
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}
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static int convert_UTF32_to_UTF8(char *buf, UTF32 ch)
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{
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int len = 1;
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if (ch <= 0x7F) {
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buf[0] = (char) ch;
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} else if (ch <= 0x07FF) {
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buf[0] = (char) ((ch >> 6) | 0xC0);
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buf[1] = (char) ((ch & 0x3F) | 0x80);
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len++;
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} else if (ch <= 0xFFFF) {
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buf[0] = (char) ((ch >> 12) | 0xE0);
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buf[1] = (char) (((ch >> 6) & 0x3F) | 0x80);
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buf[2] = (char) ((ch & 0x3F) | 0x80);
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len += 2;
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} else if (ch <= 0x1fffff) {
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buf[0] =(char) ((ch >> 18) | 0xF0);
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buf[1] =(char) (((ch >> 12) & 0x3F) | 0x80);
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buf[2] =(char) (((ch >> 6) & 0x3F) | 0x80);
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buf[3] =(char) ((ch & 0x3F) | 0x80);
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len += 3;
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} else {
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buf[0] = '?';
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}
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return len;
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}
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static VALUE mJSON, mExt, cParser, eParserError, eNestingError;
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static VALUE CNaN, CInfinity, CMinusInfinity;
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static ID i_json_creatable_p, i_json_create, i_create_id, i_create_additions,
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i_chr, i_max_nesting, i_allow_nan, i_symbolize_names,
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i_object_class, i_array_class, i_decimal_class, i_key_p,
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i_deep_const_get, i_match, i_match_string, i_aset, i_aref,
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i_leftshift, i_new;
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%%{
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machine JSON_common;
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cr = '\n';
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cr_neg = [^\n];
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ws = [ \t\r\n];
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c_comment = '/*' ( any* - (any* '*/' any* ) ) '*/';
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cpp_comment = '//' cr_neg* cr;
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comment = c_comment | cpp_comment;
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ignore = ws | comment;
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name_separator = ':';
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value_separator = ',';
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Vnull = 'null';
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Vfalse = 'false';
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Vtrue = 'true';
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VNaN = 'NaN';
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VInfinity = 'Infinity';
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VMinusInfinity = '-Infinity';
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begin_value = [nft\"\-\[\{NI] | digit;
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begin_object = '{';
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end_object = '}';
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begin_array = '[';
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end_array = ']';
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begin_string = '"';
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begin_name = begin_string;
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begin_number = digit | '-';
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}%%
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%%{
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machine JSON_object;
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include JSON_common;
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write data;
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action parse_value {
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VALUE v = Qnil;
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char *np = JSON_parse_value(json, fpc, pe, &v, current_nesting);
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if (np == NULL) {
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fhold; fbreak;
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} else {
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if (NIL_P(json->object_class)) {
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rb_hash_aset(*result, last_name, v);
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} else {
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rb_funcall(*result, i_aset, 2, last_name, v);
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}
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fexec np;
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}
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}
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action parse_name {
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char *np;
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json->parsing_name = 1;
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np = JSON_parse_string(json, fpc, pe, &last_name);
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json->parsing_name = 0;
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if (np == NULL) { fhold; fbreak; } else fexec np;
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}
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action exit { fhold; fbreak; }
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pair = ignore* begin_name >parse_name ignore* name_separator ignore* begin_value >parse_value;
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next_pair = ignore* value_separator pair;
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main := (
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begin_object
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(pair (next_pair)*)? ignore*
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end_object
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) @exit;
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}%%
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static char *JSON_parse_object(JSON_Parser *json, char *p, char *pe, VALUE *result, int current_nesting)
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{
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int cs = EVIL;
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VALUE last_name = Qnil;
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VALUE object_class = json->object_class;
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if (json->max_nesting && current_nesting > json->max_nesting) {
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rb_raise(eNestingError, "nesting of %d is too deep", current_nesting);
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}
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*result = NIL_P(object_class) ? rb_hash_new() : rb_class_new_instance(0, 0, object_class);
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%% write init;
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%% write exec;
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if (cs >= JSON_object_first_final) {
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if (json->create_additions) {
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VALUE klassname;
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if (NIL_P(json->object_class)) {
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klassname = rb_hash_aref(*result, json->create_id);
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} else {
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klassname = rb_funcall(*result, i_aref, 1, json->create_id);
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}
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if (!NIL_P(klassname)) {
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VALUE klass = rb_funcall(mJSON, i_deep_const_get, 1, klassname);
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if (RTEST(rb_funcall(klass, i_json_creatable_p, 0))) {
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*result = rb_funcall(klass, i_json_create, 1, *result);
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}
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}
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}
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return p + 1;
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} else {
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return NULL;
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}
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}
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%%{
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machine JSON_value;
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include JSON_common;
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write data;
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action parse_null {
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*result = Qnil;
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}
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action parse_false {
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*result = Qfalse;
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}
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action parse_true {
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*result = Qtrue;
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}
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action parse_nan {
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if (json->allow_nan) {
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*result = CNaN;
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} else {
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rb_enc_raise(EXC_ENCODING eParserError, "%u: unexpected token at '%s'", __LINE__, p - 2);
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}
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}
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action parse_infinity {
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if (json->allow_nan) {
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*result = CInfinity;
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} else {
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rb_enc_raise(EXC_ENCODING eParserError, "%u: unexpected token at '%s'", __LINE__, p - 8);
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}
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}
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action parse_string {
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char *np = JSON_parse_string(json, fpc, pe, result);
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if (np == NULL) { fhold; fbreak; } else fexec np;
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}
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action parse_number {
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char *np;
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if(pe > fpc + 8 && !strncmp(MinusInfinity, fpc, 9)) {
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if (json->allow_nan) {
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*result = CMinusInfinity;
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fexec p + 10;
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fhold; fbreak;
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} else {
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rb_enc_raise(EXC_ENCODING eParserError, "%u: unexpected token at '%s'", __LINE__, p);
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}
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}
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np = JSON_parse_float(json, fpc, pe, result);
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if (np != NULL) fexec np;
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np = JSON_parse_integer(json, fpc, pe, result);
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if (np != NULL) fexec np;
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fhold; fbreak;
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}
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action parse_array {
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char *np;
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np = JSON_parse_array(json, fpc, pe, result, current_nesting + 1);
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if (np == NULL) { fhold; fbreak; } else fexec np;
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}
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action parse_object {
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char *np;
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np = JSON_parse_object(json, fpc, pe, result, current_nesting + 1);
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if (np == NULL) { fhold; fbreak; } else fexec np;
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}
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action exit { fhold; fbreak; }
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main := ignore* (
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Vnull @parse_null |
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Vfalse @parse_false |
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Vtrue @parse_true |
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VNaN @parse_nan |
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VInfinity @parse_infinity |
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begin_number >parse_number |
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begin_string >parse_string |
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begin_array >parse_array |
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begin_object >parse_object
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) ignore* %*exit;
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}%%
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static char *JSON_parse_value(JSON_Parser *json, char *p, char *pe, VALUE *result, int current_nesting)
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{
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int cs = EVIL;
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%% write init;
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%% write exec;
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if (cs >= JSON_value_first_final) {
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return p;
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} else {
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return NULL;
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}
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}
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%%{
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machine JSON_integer;
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write data;
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action exit { fhold; fbreak; }
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main := '-'? ('0' | [1-9][0-9]*) (^[0-9]? @exit);
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}%%
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static char *JSON_parse_integer(JSON_Parser *json, char *p, char *pe, VALUE *result)
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{
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int cs = EVIL;
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%% write init;
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json->memo = p;
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%% write exec;
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if (cs >= JSON_integer_first_final) {
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long len = p - json->memo;
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fbuffer_clear(json->fbuffer);
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fbuffer_append(json->fbuffer, json->memo, len);
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fbuffer_append_char(json->fbuffer, '\0');
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*result = rb_cstr2inum(FBUFFER_PTR(json->fbuffer), 10);
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return p + 1;
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} else {
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return NULL;
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}
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}
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%%{
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machine JSON_float;
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include JSON_common;
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write data;
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action exit { fhold; fbreak; }
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main := '-'? (
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(('0' | [1-9][0-9]*) '.' [0-9]+ ([Ee] [+\-]?[0-9]+)?)
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| (('0' | [1-9][0-9]*) ([Ee] [+\-]?[0-9]+))
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) (^[0-9Ee.\-]? @exit );
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}%%
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static char *JSON_parse_float(JSON_Parser *json, char *p, char *pe, VALUE *result)
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{
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int cs = EVIL;
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%% write init;
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json->memo = p;
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%% write exec;
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if (cs >= JSON_float_first_final) {
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long len = p - json->memo;
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fbuffer_clear(json->fbuffer);
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fbuffer_append(json->fbuffer, json->memo, len);
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fbuffer_append_char(json->fbuffer, '\0');
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if (NIL_P(json->decimal_class)) {
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*result = rb_float_new(rb_cstr_to_dbl(FBUFFER_PTR(json->fbuffer), 1));
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} else {
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VALUE text;
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text = rb_str_new2(FBUFFER_PTR(json->fbuffer));
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*result = rb_funcall(json->decimal_class, i_new, 1, text);
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}
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return p + 1;
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} else {
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return NULL;
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}
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}
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%%{
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machine JSON_array;
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include JSON_common;
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write data;
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action parse_value {
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VALUE v = Qnil;
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char *np = JSON_parse_value(json, fpc, pe, &v, current_nesting);
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if (np == NULL) {
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fhold; fbreak;
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} else {
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if (NIL_P(json->array_class)) {
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rb_ary_push(*result, v);
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} else {
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rb_funcall(*result, i_leftshift, 1, v);
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}
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fexec np;
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}
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}
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action exit { fhold; fbreak; }
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next_element = value_separator ignore* begin_value >parse_value;
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main := begin_array ignore*
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((begin_value >parse_value ignore*)
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(ignore* next_element ignore*)*)?
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end_array @exit;
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}%%
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static char *JSON_parse_array(JSON_Parser *json, char *p, char *pe, VALUE *result, int current_nesting)
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{
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int cs = EVIL;
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VALUE array_class = json->array_class;
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if (json->max_nesting && current_nesting > json->max_nesting) {
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rb_raise(eNestingError, "nesting of %d is too deep", current_nesting);
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}
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*result = NIL_P(array_class) ? rb_ary_new() : rb_class_new_instance(0, 0, array_class);
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%% write init;
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%% write exec;
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if(cs >= JSON_array_first_final) {
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return p + 1;
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} else {
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rb_enc_raise(EXC_ENCODING eParserError, "%u: unexpected token at '%s'", __LINE__, p);
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return NULL;
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}
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}
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static VALUE json_string_unescape(VALUE result, char *string, char *stringEnd)
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{
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char *p = string, *pe = string, *unescape;
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int unescape_len;
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char buf[4];
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while (pe < stringEnd) {
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if (*pe == '\\') {
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unescape = (char *) "?";
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unescape_len = 1;
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if (pe > p) rb_str_buf_cat(result, p, pe - p);
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switch (*++pe) {
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case 'n':
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unescape = (char *) "\n";
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break;
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case 'r':
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unescape = (char *) "\r";
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break;
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case 't':
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unescape = (char *) "\t";
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break;
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case '"':
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unescape = (char *) "\"";
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break;
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case '\\':
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unescape = (char *) "\\";
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break;
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case 'b':
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unescape = (char *) "\b";
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break;
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case 'f':
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unescape = (char *) "\f";
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break;
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case 'u':
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if (pe > stringEnd - 4) {
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rb_enc_raise(
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EXC_ENCODING eParserError,
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"%u: incomplete unicode character escape sequence at '%s'", __LINE__, p
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);
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} else {
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UTF32 ch = unescape_unicode((unsigned char *) ++pe);
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pe += 3;
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if (UNI_SUR_HIGH_START == (ch & 0xFC00)) {
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pe++;
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if (pe > stringEnd - 6) {
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rb_enc_raise(
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EXC_ENCODING eParserError,
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"%u: incomplete surrogate pair at '%s'", __LINE__, p
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);
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}
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if (pe[0] == '\\' && pe[1] == 'u') {
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UTF32 sur = unescape_unicode((unsigned char *) pe + 2);
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ch = (((ch & 0x3F) << 10) | ((((ch >> 6) & 0xF) + 1) << 16)
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| (sur & 0x3FF));
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pe += 5;
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} else {
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unescape = (char *) "?";
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break;
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}
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}
|
|
unescape_len = convert_UTF32_to_UTF8(buf, ch);
|
|
unescape = buf;
|
|
}
|
|
break;
|
|
default:
|
|
p = pe;
|
|
continue;
|
|
}
|
|
rb_str_buf_cat(result, unescape, unescape_len);
|
|
p = ++pe;
|
|
} else {
|
|
pe++;
|
|
}
|
|
}
|
|
rb_str_buf_cat(result, p, pe - p);
|
|
return result;
|
|
}
|
|
|
|
%%{
|
|
machine JSON_string;
|
|
include JSON_common;
|
|
|
|
write data;
|
|
|
|
action parse_string {
|
|
*result = json_string_unescape(*result, json->memo + 1, p);
|
|
if (NIL_P(*result)) {
|
|
fhold;
|
|
fbreak;
|
|
} else {
|
|
FORCE_UTF8(*result);
|
|
fexec p + 1;
|
|
}
|
|
}
|
|
|
|
action exit { fhold; fbreak; }
|
|
|
|
main := '"' ((^([\"\\] | 0..0x1f) | '\\'[\"\\/bfnrt] | '\\u'[0-9a-fA-F]{4} | '\\'^([\"\\/bfnrtu]|0..0x1f))* %parse_string) '"' @exit;
|
|
}%%
|
|
|
|
static int
|
|
match_i(VALUE regexp, VALUE klass, VALUE memo)
|
|
{
|
|
if (regexp == Qundef) return ST_STOP;
|
|
if (RTEST(rb_funcall(klass, i_json_creatable_p, 0)) &&
|
|
RTEST(rb_funcall(regexp, i_match, 1, rb_ary_entry(memo, 0)))) {
|
|
rb_ary_push(memo, klass);
|
|
return ST_STOP;
|
|
}
|
|
return ST_CONTINUE;
|
|
}
|
|
|
|
static char *JSON_parse_string(JSON_Parser *json, char *p, char *pe, VALUE *result)
|
|
{
|
|
int cs = EVIL;
|
|
VALUE match_string;
|
|
|
|
*result = rb_str_buf_new(0);
|
|
%% write init;
|
|
json->memo = p;
|
|
%% write exec;
|
|
|
|
if (json->create_additions && RTEST(match_string = json->match_string)) {
|
|
VALUE klass;
|
|
VALUE memo = rb_ary_new2(2);
|
|
rb_ary_push(memo, *result);
|
|
rb_hash_foreach(match_string, match_i, memo);
|
|
klass = rb_ary_entry(memo, 1);
|
|
if (RTEST(klass)) {
|
|
*result = rb_funcall(klass, i_json_create, 1, *result);
|
|
}
|
|
}
|
|
|
|
if (json->symbolize_names && json->parsing_name) {
|
|
*result = rb_str_intern(*result);
|
|
} else {
|
|
rb_str_resize(*result, RSTRING_LEN(*result));
|
|
}
|
|
if (cs >= JSON_string_first_final) {
|
|
return p + 1;
|
|
} else {
|
|
return NULL;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Document-class: JSON::Ext::Parser
|
|
*
|
|
* This is the JSON parser implemented as a C extension. It can be configured
|
|
* to be used by setting
|
|
*
|
|
* JSON.parser = JSON::Ext::Parser
|
|
*
|
|
* with the method parser= in JSON.
|
|
*
|
|
*/
|
|
|
|
static VALUE convert_encoding(VALUE source)
|
|
{
|
|
#ifdef HAVE_RUBY_ENCODING_H
|
|
rb_encoding *enc = rb_enc_get(source);
|
|
if (enc == rb_ascii8bit_encoding()) {
|
|
if (OBJ_FROZEN(source)) {
|
|
source = rb_str_dup(source);
|
|
}
|
|
FORCE_UTF8(source);
|
|
} else {
|
|
source = rb_str_conv_enc(source, rb_enc_get(source), rb_utf8_encoding());
|
|
}
|
|
#endif
|
|
return source;
|
|
}
|
|
|
|
/*
|
|
* call-seq: new(source, opts => {})
|
|
*
|
|
* Creates a new JSON::Ext::Parser instance for the string _source_.
|
|
*
|
|
* Creates a new JSON::Ext::Parser instance for the string _source_.
|
|
*
|
|
* It will be configured by the _opts_ hash. _opts_ can have the following
|
|
* keys:
|
|
*
|
|
* _opts_ can have the following keys:
|
|
* * *max_nesting*: The maximum depth of nesting allowed in the parsed data
|
|
* structures. Disable depth checking with :max_nesting => false|nil|0, it
|
|
* defaults to 100.
|
|
* * *allow_nan*: If set to true, allow NaN, Infinity and -Infinity in
|
|
* defiance of RFC 4627 to be parsed by the Parser. This option defaults to
|
|
* false.
|
|
* * *symbolize_names*: If set to true, returns symbols for the names
|
|
* (keys) in a JSON object. Otherwise strings are returned, which is
|
|
* also the default. It's not possible to use this option in
|
|
* conjunction with the *create_additions* option.
|
|
* * *create_additions*: If set to false, the Parser doesn't create
|
|
* additions even if a matching class and create_id was found. This option
|
|
* defaults to false.
|
|
* * *object_class*: Defaults to Hash
|
|
* * *array_class*: Defaults to Array
|
|
*/
|
|
static VALUE cParser_initialize(int argc, VALUE *argv, VALUE self)
|
|
{
|
|
VALUE source, opts;
|
|
GET_PARSER_INIT;
|
|
|
|
if (json->Vsource) {
|
|
rb_raise(rb_eTypeError, "already initialized instance");
|
|
}
|
|
#ifdef HAVE_RB_SCAN_ARGS_OPTIONAL_HASH
|
|
rb_scan_args(argc, argv, "1:", &source, &opts);
|
|
#else
|
|
rb_scan_args(argc, argv, "11", &source, &opts);
|
|
#endif
|
|
if (!NIL_P(opts)) {
|
|
#ifndef HAVE_RB_SCAN_ARGS_OPTIONAL_HASH
|
|
opts = rb_convert_type(opts, T_HASH, "Hash", "to_hash");
|
|
if (NIL_P(opts)) {
|
|
rb_raise(rb_eArgError, "opts needs to be like a hash");
|
|
} else {
|
|
#endif
|
|
VALUE tmp = ID2SYM(i_max_nesting);
|
|
if (option_given_p(opts, tmp)) {
|
|
VALUE max_nesting = rb_hash_aref(opts, tmp);
|
|
if (RTEST(max_nesting)) {
|
|
Check_Type(max_nesting, T_FIXNUM);
|
|
json->max_nesting = FIX2INT(max_nesting);
|
|
} else {
|
|
json->max_nesting = 0;
|
|
}
|
|
} else {
|
|
json->max_nesting = 100;
|
|
}
|
|
tmp = ID2SYM(i_allow_nan);
|
|
if (option_given_p(opts, tmp)) {
|
|
json->allow_nan = RTEST(rb_hash_aref(opts, tmp)) ? 1 : 0;
|
|
} else {
|
|
json->allow_nan = 0;
|
|
}
|
|
tmp = ID2SYM(i_symbolize_names);
|
|
if (option_given_p(opts, tmp)) {
|
|
json->symbolize_names = RTEST(rb_hash_aref(opts, tmp)) ? 1 : 0;
|
|
} else {
|
|
json->symbolize_names = 0;
|
|
}
|
|
tmp = ID2SYM(i_create_additions);
|
|
if (option_given_p(opts, tmp)) {
|
|
json->create_additions = RTEST(rb_hash_aref(opts, tmp));
|
|
} else {
|
|
json->create_additions = 0;
|
|
}
|
|
if (json->symbolize_names && json->create_additions) {
|
|
rb_raise(rb_eArgError,
|
|
"options :symbolize_names and :create_additions cannot be "
|
|
" used in conjunction");
|
|
}
|
|
tmp = ID2SYM(i_create_id);
|
|
if (option_given_p(opts, tmp)) {
|
|
json->create_id = rb_hash_aref(opts, tmp);
|
|
} else {
|
|
json->create_id = rb_funcall(mJSON, i_create_id, 0);
|
|
}
|
|
tmp = ID2SYM(i_object_class);
|
|
if (option_given_p(opts, tmp)) {
|
|
json->object_class = rb_hash_aref(opts, tmp);
|
|
} else {
|
|
json->object_class = Qnil;
|
|
}
|
|
tmp = ID2SYM(i_array_class);
|
|
if (option_given_p(opts, tmp)) {
|
|
json->array_class = rb_hash_aref(opts, tmp);
|
|
} else {
|
|
json->array_class = Qnil;
|
|
}
|
|
tmp = ID2SYM(i_decimal_class);
|
|
if (option_given_p(opts, tmp)) {
|
|
json->decimal_class = rb_hash_aref(opts, tmp);
|
|
} else {
|
|
json->decimal_class = Qnil;
|
|
}
|
|
tmp = ID2SYM(i_match_string);
|
|
if (option_given_p(opts, tmp)) {
|
|
VALUE match_string = rb_hash_aref(opts, tmp);
|
|
json->match_string = RTEST(match_string) ? match_string : Qnil;
|
|
} else {
|
|
json->match_string = Qnil;
|
|
}
|
|
#ifndef HAVE_RB_SCAN_ARGS_OPTIONAL_HASH
|
|
}
|
|
#endif
|
|
} else {
|
|
json->max_nesting = 100;
|
|
json->allow_nan = 0;
|
|
json->create_additions = 1;
|
|
json->create_id = rb_funcall(mJSON, i_create_id, 0);
|
|
json->object_class = Qnil;
|
|
json->array_class = Qnil;
|
|
json->decimal_class = Qnil;
|
|
}
|
|
source = convert_encoding(StringValue(source));
|
|
StringValue(source);
|
|
json->len = RSTRING_LEN(source);
|
|
json->source = RSTRING_PTR(source);;
|
|
json->Vsource = source;
|
|
return self;
|
|
}
|
|
|
|
%%{
|
|
machine JSON;
|
|
|
|
write data;
|
|
|
|
include JSON_common;
|
|
|
|
action parse_value {
|
|
char *np = JSON_parse_value(json, fpc, pe, &result, 0);
|
|
if (np == NULL) { fhold; fbreak; } else fexec np;
|
|
}
|
|
|
|
main := ignore* (
|
|
begin_value >parse_value
|
|
) ignore*;
|
|
}%%
|
|
|
|
/*
|
|
* call-seq: parse()
|
|
*
|
|
* Parses the current JSON text _source_ and returns the complete data
|
|
* structure as a result.
|
|
*/
|
|
static VALUE cParser_parse(VALUE self)
|
|
{
|
|
char *p, *pe;
|
|
int cs = EVIL;
|
|
VALUE result = Qnil;
|
|
GET_PARSER;
|
|
|
|
%% write init;
|
|
p = json->source;
|
|
pe = p + json->len;
|
|
%% write exec;
|
|
|
|
if (cs >= JSON_first_final && p == pe) {
|
|
return result;
|
|
} else {
|
|
rb_enc_raise(EXC_ENCODING eParserError, "%u: unexpected token at '%s'", __LINE__, p);
|
|
return Qnil;
|
|
}
|
|
}
|
|
|
|
static void JSON_mark(void *ptr)
|
|
{
|
|
JSON_Parser *json = ptr;
|
|
rb_gc_mark_maybe(json->Vsource);
|
|
rb_gc_mark_maybe(json->create_id);
|
|
rb_gc_mark_maybe(json->object_class);
|
|
rb_gc_mark_maybe(json->array_class);
|
|
rb_gc_mark_maybe(json->decimal_class);
|
|
rb_gc_mark_maybe(json->match_string);
|
|
}
|
|
|
|
static void JSON_free(void *ptr)
|
|
{
|
|
JSON_Parser *json = ptr;
|
|
fbuffer_free(json->fbuffer);
|
|
ruby_xfree(json);
|
|
}
|
|
|
|
static size_t JSON_memsize(const void *ptr)
|
|
{
|
|
const JSON_Parser *json = ptr;
|
|
return sizeof(*json) + FBUFFER_CAPA(json->fbuffer);
|
|
}
|
|
|
|
#ifdef NEW_TYPEDDATA_WRAPPER
|
|
static const rb_data_type_t JSON_Parser_type = {
|
|
"JSON/Parser",
|
|
{JSON_mark, JSON_free, JSON_memsize,},
|
|
#ifdef RUBY_TYPED_FREE_IMMEDIATELY
|
|
0, 0,
|
|
RUBY_TYPED_FREE_IMMEDIATELY,
|
|
#endif
|
|
};
|
|
#endif
|
|
|
|
static VALUE cJSON_parser_s_allocate(VALUE klass)
|
|
{
|
|
JSON_Parser *json;
|
|
VALUE obj = TypedData_Make_Struct(klass, JSON_Parser, &JSON_Parser_type, json);
|
|
json->fbuffer = fbuffer_alloc(0);
|
|
return obj;
|
|
}
|
|
|
|
/*
|
|
* call-seq: source()
|
|
*
|
|
* Returns a copy of the current _source_ string, that was used to construct
|
|
* this Parser.
|
|
*/
|
|
static VALUE cParser_source(VALUE self)
|
|
{
|
|
GET_PARSER;
|
|
return rb_str_dup(json->Vsource);
|
|
}
|
|
|
|
void Init_parser(void)
|
|
{
|
|
rb_require("json/common");
|
|
mJSON = rb_define_module("JSON");
|
|
mExt = rb_define_module_under(mJSON, "Ext");
|
|
cParser = rb_define_class_under(mExt, "Parser", rb_cObject);
|
|
eParserError = rb_path2class("JSON::ParserError");
|
|
eNestingError = rb_path2class("JSON::NestingError");
|
|
rb_define_alloc_func(cParser, cJSON_parser_s_allocate);
|
|
rb_define_method(cParser, "initialize", cParser_initialize, -1);
|
|
rb_define_method(cParser, "parse", cParser_parse, 0);
|
|
rb_define_method(cParser, "source", cParser_source, 0);
|
|
|
|
CNaN = rb_const_get(mJSON, rb_intern("NaN"));
|
|
CInfinity = rb_const_get(mJSON, rb_intern("Infinity"));
|
|
CMinusInfinity = rb_const_get(mJSON, rb_intern("MinusInfinity"));
|
|
|
|
i_json_creatable_p = rb_intern("json_creatable?");
|
|
i_json_create = rb_intern("json_create");
|
|
i_create_id = rb_intern("create_id");
|
|
i_create_additions = rb_intern("create_additions");
|
|
i_chr = rb_intern("chr");
|
|
i_max_nesting = rb_intern("max_nesting");
|
|
i_allow_nan = rb_intern("allow_nan");
|
|
i_symbolize_names = rb_intern("symbolize_names");
|
|
i_object_class = rb_intern("object_class");
|
|
i_array_class = rb_intern("array_class");
|
|
i_decimal_class = rb_intern("decimal_class");
|
|
i_match = rb_intern("match");
|
|
i_match_string = rb_intern("match_string");
|
|
i_key_p = rb_intern("key?");
|
|
i_deep_const_get = rb_intern("deep_const_get");
|
|
i_aset = rb_intern("[]=");
|
|
i_aref = rb_intern("[]");
|
|
i_leftshift = rb_intern("<<");
|
|
i_new = rb_intern("new");
|
|
}
|
|
|
|
/*
|
|
* Local variables:
|
|
* mode: c
|
|
* c-file-style: ruby
|
|
* indent-tabs-mode: nil
|
|
* End:
|
|
*/
|