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-rw-r--r--ext/json/parser/parser.rl792
1 files changed, 792 insertions, 0 deletions
diff --git a/ext/json/parser/parser.rl b/ext/json/parser/parser.rl
new file mode 100644
index 00000000000..dd07485f3ac
--- /dev/null
+++ b/ext/json/parser/parser.rl
@@ -0,0 +1,792 @@
+#include "parser.h"
+
+/* unicode */
+
+static const char digit_values[256] = {
+ -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, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, -1,
+ -1, -1, -1, -1, -1, -1, 10, 11, 12, 13, 14, 15, -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,
+ 10, 11, 12, 13, 14, 15, -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, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ -1, -1, -1, -1, -1, -1, -1
+};
+
+static UTF32 unescape_unicode(const unsigned char *p)
+{
+ char b;
+ UTF32 result = 0;
+ b = digit_values[p[0]];
+ if (b < 0) return UNI_REPLACEMENT_CHAR;
+ result = (result << 4) | b;
+ b = digit_values[p[1]];
+ result = (result << 4) | b;
+ if (b < 0) return UNI_REPLACEMENT_CHAR;
+ b = digit_values[p[2]];
+ result = (result << 4) | b;
+ if (b < 0) return UNI_REPLACEMENT_CHAR;
+ b = digit_values[p[3]];
+ result = (result << 4) | b;
+ if (b < 0) return UNI_REPLACEMENT_CHAR;
+ return result;
+}
+
+static int convert_UTF32_to_UTF8(char *buf, UTF32 ch)
+{
+ int len = 1;
+ if (ch <= 0x7F) {
+ buf[0] = (char) ch;
+ } else if (ch <= 0x07FF) {
+ buf[0] = (char) ((ch >> 6) | 0xC0);
+ buf[1] = (char) ((ch & 0x3F) | 0x80);
+ len++;
+ } else if (ch <= 0xFFFF) {
+ buf[0] = (char) ((ch >> 12) | 0xE0);
+ buf[1] = (char) (((ch >> 6) & 0x3F) | 0x80);
+ buf[2] = (char) ((ch & 0x3F) | 0x80);
+ len += 2;
+ } else if (ch <= 0x1fffff) {
+ buf[0] =(char) ((ch >> 18) | 0xF0);
+ buf[1] =(char) (((ch >> 12) & 0x3F) | 0x80);
+ buf[2] =(char) (((ch >> 6) & 0x3F) | 0x80);
+ buf[3] =(char) ((ch & 0x3F) | 0x80);
+ len += 3;
+ } else {
+ buf[0] = '?';
+ }
+ return len;
+}
+
+#ifdef HAVE_RUBY_ENCODING_H
+static VALUE CEncoding_ASCII_8BIT, CEncoding_UTF_8, CEncoding_UTF_16BE,
+ CEncoding_UTF_16LE, CEncoding_UTF_32BE, CEncoding_UTF_32LE;
+static ID i_encoding, i_encode, i_encode_bang, i_force_encoding;
+#else
+static ID i_iconv;
+#endif
+
+static VALUE mJSON, mExt, cParser, eParserError, eNestingError;
+static VALUE CNaN, CInfinity, CMinusInfinity;
+
+static ID i_json_creatable_p, i_json_create, i_create_id, i_create_additions,
+ i_chr, i_max_nesting, i_allow_nan, i_symbolize_names, i_object_class,
+ i_array_class, i_key_p, i_deep_const_get;
+
+%%{
+ machine JSON_common;
+
+ cr = '\n';
+ cr_neg = [^\n];
+ ws = [ \t\r\n];
+ c_comment = '/*' ( any* - (any* '*/' any* ) ) '*/';
+ cpp_comment = '//' cr_neg* cr;
+ comment = c_comment | cpp_comment;
+ ignore = ws | comment;
+ name_separator = ':';
+ value_separator = ',';
+ Vnull = 'null';
+ Vfalse = 'false';
+ Vtrue = 'true';
+ VNaN = 'NaN';
+ VInfinity = 'Infinity';
+ VMinusInfinity = '-Infinity';
+ begin_value = [nft"\-[{NI] | digit;
+ begin_object = '{';
+ end_object = '}';
+ begin_array = '[';
+ end_array = ']';
+ begin_string = '"';
+ begin_name = begin_string;
+ begin_number = digit | '-';
+}%%
+
+%%{
+ machine JSON_object;
+ include JSON_common;
+
+ write data;
+
+ action parse_value {
+ VALUE v = Qnil;
+ char *np = JSON_parse_value(json, fpc, pe, &v);
+ if (np == NULL) {
+ fhold; fbreak;
+ } else {
+ rb_hash_aset(*result, last_name, v);
+ fexec np;
+ }
+ }
+
+ action parse_name {
+ char *np;
+ json->parsing_name = 1;
+ np = JSON_parse_string(json, fpc, pe, &last_name);
+ json->parsing_name = 0;
+ if (np == NULL) { fhold; fbreak; } else fexec np;
+ }
+
+ action exit { fhold; fbreak; }
+
+ a_pair = ignore* begin_name >parse_name
+ ignore* name_separator ignore*
+ begin_value >parse_value;
+
+ main := begin_object
+ (a_pair (ignore* value_separator a_pair)*)?
+ ignore* end_object @exit;
+}%%
+
+static char *JSON_parse_object(JSON_Parser *json, char *p, char *pe, VALUE *result)
+{
+ int cs = EVIL;
+ VALUE last_name = Qnil;
+ VALUE object_class = json->object_class;
+
+ if (json->max_nesting && json->current_nesting > json->max_nesting) {
+ rb_raise(eNestingError, "nesting of %d is too deep", json->current_nesting);
+ }
+
+ *result = NIL_P(object_class) ? rb_hash_new() : rb_class_new_instance(0, 0, object_class);
+
+ %% write init;
+ %% write exec;
+
+ if (cs >= JSON_object_first_final) {
+ if (RTEST(json->create_id)) {
+ VALUE klassname = rb_hash_aref(*result, json->create_id);
+ if (!NIL_P(klassname)) {
+ VALUE klass = rb_funcall(mJSON, i_deep_const_get, 1, klassname);
+ if RTEST(rb_funcall(klass, i_json_creatable_p, 0)) {
+ *result = rb_funcall(klass, i_json_create, 1, *result);
+ }
+ }
+ }
+ return p + 1;
+ } else {
+ return NULL;
+ }
+}
+
+%%{
+ machine JSON_value;
+ include JSON_common;
+
+ write data;
+
+ action parse_null {
+ *result = Qnil;
+ }
+ action parse_false {
+ *result = Qfalse;
+ }
+ action parse_true {
+ *result = Qtrue;
+ }
+ action parse_nan {
+ if (json->allow_nan) {
+ *result = CNaN;
+ } else {
+ rb_raise(eParserError, "%u: unexpected token at '%s'", __LINE__, p - 2);
+ }
+ }
+ action parse_infinity {
+ if (json->allow_nan) {
+ *result = CInfinity;
+ } else {
+ rb_raise(eParserError, "%u: unexpected token at '%s'", __LINE__, p - 8);
+ }
+ }
+ action parse_string {
+ char *np = JSON_parse_string(json, fpc, pe, result);
+ if (np == NULL) { fhold; fbreak; } else fexec np;
+ }
+
+ action parse_number {
+ char *np;
+ if(pe > fpc + 9 && !strncmp(MinusInfinity, fpc, 9)) {
+ if (json->allow_nan) {
+ *result = CMinusInfinity;
+ fexec p + 10;
+ fhold; fbreak;
+ } else {
+ rb_raise(eParserError, "%u: unexpected token at '%s'", __LINE__, p);
+ }
+ }
+ np = JSON_parse_float(json, fpc, pe, result);
+ if (np != NULL) fexec np;
+ np = JSON_parse_integer(json, fpc, pe, result);
+ if (np != NULL) fexec np;
+ fhold; fbreak;
+ }
+
+ action parse_array {
+ char *np;
+ json->current_nesting++;
+ np = JSON_parse_array(json, fpc, pe, result);
+ json->current_nesting--;
+ if (np == NULL) { fhold; fbreak; } else fexec np;
+ }
+
+ action parse_object {
+ char *np;
+ json->current_nesting++;
+ np = JSON_parse_object(json, fpc, pe, result);
+ json->current_nesting--;
+ if (np == NULL) { fhold; fbreak; } else fexec np;
+ }
+
+ action exit { fhold; fbreak; }
+
+main := (
+ Vnull @parse_null |
+ Vfalse @parse_false |
+ Vtrue @parse_true |
+ VNaN @parse_nan |
+ VInfinity @parse_infinity |
+ begin_number >parse_number |
+ begin_string >parse_string |
+ begin_array >parse_array |
+ begin_object >parse_object
+ ) %*exit;
+}%%
+
+static char *JSON_parse_value(JSON_Parser *json, char *p, char *pe, VALUE *result)
+{
+ int cs = EVIL;
+
+ %% write init;
+ %% write exec;
+
+ if (cs >= JSON_value_first_final) {
+ return p;
+ } else {
+ return NULL;
+ }
+}
+
+%%{
+ machine JSON_integer;
+
+ write data;
+
+ action exit { fhold; fbreak; }
+
+ main := '-'? ('0' | [1-9][0-9]*) (^[0-9] @exit);
+}%%
+
+static char *JSON_parse_integer(JSON_Parser *json, char *p, char *pe, VALUE *result)
+{
+ int cs = EVIL;
+
+ %% write init;
+ json->memo = p;
+ %% write exec;
+
+ if (cs >= JSON_integer_first_final) {
+ long len = p - json->memo;
+ *result = rb_Integer(rb_str_new(json->memo, len));
+ return p + 1;
+ } else {
+ return NULL;
+ }
+}
+
+%%{
+ machine JSON_float;
+ include JSON_common;
+
+ write data;
+
+ action exit { fhold; fbreak; }
+
+ main := '-'? (
+ (('0' | [1-9][0-9]*) '.' [0-9]+ ([Ee] [+\-]?[0-9]+)?)
+ | (('0' | [1-9][0-9]*) ([Ee] [+\-]?[0-9]+))
+ ) (^[0-9Ee.\-] @exit );
+}%%
+
+static char *JSON_parse_float(JSON_Parser *json, char *p, char *pe, VALUE *result)
+{
+ int cs = EVIL;
+
+ %% write init;
+ json->memo = p;
+ %% write exec;
+
+ if (cs >= JSON_float_first_final) {
+ long len = p - json->memo;
+ *result = rb_Float(rb_str_new(json->memo, len));
+ return p + 1;
+ } else {
+ return NULL;
+ }
+}
+
+
+%%{
+ machine JSON_array;
+ include JSON_common;
+
+ write data;
+
+ action parse_value {
+ VALUE v = Qnil;
+ char *np = JSON_parse_value(json, fpc, pe, &v);
+ if (np == NULL) {
+ fhold; fbreak;
+ } else {
+ rb_ary_push(*result, v);
+ fexec np;
+ }
+ }
+
+ action exit { fhold; fbreak; }
+
+ next_element = value_separator ignore* begin_value >parse_value;
+
+ main := begin_array ignore*
+ ((begin_value >parse_value ignore*)
+ (ignore* next_element ignore*)*)?
+ end_array @exit;
+}%%
+
+static char *JSON_parse_array(JSON_Parser *json, char *p, char *pe, VALUE *result)
+{
+ int cs = EVIL;
+ VALUE array_class = json->array_class;
+
+ if (json->max_nesting && json->current_nesting > json->max_nesting) {
+ rb_raise(eNestingError, "nesting of %d is too deep", json->current_nesting);
+ }
+ *result = NIL_P(array_class) ? rb_ary_new() : rb_class_new_instance(0, 0, array_class);
+
+ %% write init;
+ %% write exec;
+
+ if(cs >= JSON_array_first_final) {
+ return p + 1;
+ } else {
+ rb_raise(eParserError, "%u: unexpected token at '%s'", __LINE__, p);
+ return NULL;
+ }
+}
+
+static VALUE json_string_unescape(VALUE result, char *string, char *stringEnd)
+{
+ char *p = string, *pe = string, *unescape;
+ int unescape_len;
+
+ while (pe < stringEnd) {
+ if (*pe == '\\') {
+ unescape = (char *) "?";
+ unescape_len = 1;
+ if (pe > p) rb_str_buf_cat(result, p, pe - p);
+ switch (*++pe) {
+ case 'n':
+ unescape = (char *) "\n";
+ break;
+ case 'r':
+ unescape = (char *) "\r";
+ break;
+ case 't':
+ unescape = (char *) "\t";
+ break;
+ case '"':
+ unescape = (char *) "\"";
+ break;
+ case '\\':
+ unescape = (char *) "\\";
+ break;
+ case 'b':
+ unescape = (char *) "\b";
+ break;
+ case 'f':
+ unescape = (char *) "\f";
+ break;
+ case 'u':
+ if (pe > stringEnd - 4) {
+ return Qnil;
+ } else {
+ char buf[4];
+ UTF32 ch = unescape_unicode((unsigned char *) ++pe);
+ pe += 3;
+ if (UNI_SUR_HIGH_START == (ch & 0xFC00)) {
+ pe++;
+ if (pe > stringEnd - 6) return Qnil;
+ if (pe[0] == '\\' && pe[1] == 'u') {
+ UTF32 sur = unescape_unicode((unsigned char *) pe + 2);
+ ch = (((ch & 0x3F) << 10) | ((((ch >> 6) & 0xF) + 1) << 16)
+ | (sur & 0x3FF));
+ pe += 5;
+ } else {
+ unescape = (char *) "?";
+ break;
+ }
+ }
+ 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 char *JSON_parse_string(JSON_Parser *json, char *p, char *pe, VALUE *result)
+{
+ int cs = EVIL;
+
+ *result = rb_str_buf_new(0);
+ %% write init;
+ json->memo = p;
+ %% write exec;
+
+ if (json->symbolize_names && json->parsing_name) {
+ *result = rb_str_intern(*result);
+ }
+ if (cs >= JSON_string_first_final) {
+ return p + 1;
+ } else {
+ return NULL;
+ }
+}
+
+
+%%{
+ machine JSON;
+
+ write data;
+
+ include JSON_common;
+
+ action parse_object {
+ char *np;
+ json->current_nesting = 1;
+ np = JSON_parse_object(json, fpc, pe, &result);
+ if (np == NULL) { fhold; fbreak; } else fexec np;
+ }
+
+ action parse_array {
+ char *np;
+ json->current_nesting = 1;
+ np = JSON_parse_array(json, fpc, pe, &result);
+ if (np == NULL) { fhold; fbreak; } else fexec np;
+ }
+
+ main := ignore* (
+ begin_object >parse_object |
+ begin_array >parse_array
+ ) ignore*;
+}%%
+
+/*
+ * 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)
+{
+ char *ptr = RSTRING_PTR(source);
+ long len = RSTRING_LEN(source);
+ if (len < 2) {
+ rb_raise(eParserError, "A JSON text must at least contain two octets!");
+ }
+#ifdef HAVE_RUBY_ENCODING_H
+ {
+ VALUE encoding = rb_funcall(source, i_encoding, 0);
+ if (encoding == CEncoding_ASCII_8BIT) {
+ if (len >= 4 && ptr[0] == 0 && ptr[1] == 0 && ptr[2] == 0) {
+ source = rb_str_dup(source);
+ rb_funcall(source, i_force_encoding, 1, CEncoding_UTF_32BE);
+ source = rb_funcall(source, i_encode_bang, 1, CEncoding_UTF_8);
+ } else if (len >= 4 && ptr[0] == 0 && ptr[2] == 0) {
+ source = rb_str_dup(source);
+ rb_funcall(source, i_force_encoding, 1, CEncoding_UTF_16BE);
+ source = rb_funcall(source, i_encode_bang, 1, CEncoding_UTF_8);
+ } else if (len >= 4 && ptr[1] == 0 && ptr[2] == 0 && ptr[3] == 0) {
+ source = rb_str_dup(source);
+ rb_funcall(source, i_force_encoding, 1, CEncoding_UTF_32LE);
+ source = rb_funcall(source, i_encode_bang, 1, CEncoding_UTF_8);
+ } else if (len >= 4 && ptr[1] == 0 && ptr[3] == 0) {
+ source = rb_str_dup(source);
+ rb_funcall(source, i_force_encoding, 1, CEncoding_UTF_16LE);
+ source = rb_funcall(source, i_encode_bang, 1, CEncoding_UTF_8);
+ } else {
+ FORCE_UTF8(source);
+ }
+ } else {
+ source = rb_funcall(source, i_encode, 1, CEncoding_UTF_8);
+ }
+ }
+#else
+ if (len >= 4 && ptr[0] == 0 && ptr[1] == 0 && ptr[2] == 0) {
+ source = rb_funcall(mJSON, i_iconv, 3, rb_str_new2("utf-8"), rb_str_new2("utf-32be"), source);
+ } else if (len >= 4 && ptr[0] == 0 && ptr[2] == 0) {
+ source = rb_funcall(mJSON, i_iconv, 3, rb_str_new2("utf-8"), rb_str_new2("utf-16be"), source);
+ } else if (len >= 4 && ptr[1] == 0 && ptr[2] == 0 && ptr[3] == 0) {
+ source = rb_funcall(mJSON, i_iconv, 3, rb_str_new2("utf-8"), rb_str_new2("utf-32le"), source);
+ } else if (len >= 4 && ptr[1] == 0 && ptr[3] == 0) {
+ source = rb_funcall(mJSON, i_iconv, 3, rb_str_new2("utf-8"), rb_str_new2("utf-16le"), source);
+ }
+#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 19.
+ * * *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.
+ * * *create_additions*: If set to false, the Parser doesn't create
+ * additions even if a matchin class and create_id was found. This option
+ * defaults to true.
+ * * *object_class*: Defaults to Hash
+ * * *array_class*: Defaults to Array
+ */
+static VALUE cParser_initialize(int argc, VALUE *argv, VALUE self)
+{
+ char *ptr;
+ long len;
+ VALUE source, opts;
+ GET_PARSER;
+ rb_scan_args(argc, argv, "11", &source, &opts);
+ source = convert_encoding(StringValue(source));
+ ptr = RSTRING_PTR(source);
+ len = RSTRING_LEN(source);
+ if (!NIL_P(opts)) {
+ 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 {
+ 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 = 19;
+ }
+ tmp = ID2SYM(i_allow_nan);
+ if (option_given_p(opts, tmp)) {
+ VALUE allow_nan = rb_hash_aref(opts, tmp);
+ json->allow_nan = RTEST(allow_nan) ? 1 : 0;
+ } else {
+ json->allow_nan = 0;
+ }
+ tmp = ID2SYM(i_symbolize_names);
+ if (option_given_p(opts, tmp)) {
+ VALUE symbolize_names = rb_hash_aref(opts, tmp);
+ json->symbolize_names = RTEST(symbolize_names) ? 1 : 0;
+ } else {
+ json->symbolize_names = 0;
+ }
+ tmp = ID2SYM(i_create_additions);
+ if (option_given_p(opts, tmp)) {
+ VALUE create_additions = rb_hash_aref(opts, tmp);
+ if (RTEST(create_additions)) {
+ json->create_id = rb_funcall(mJSON, i_create_id, 0);
+ } else {
+ json->create_id = Qnil;
+ }
+ } 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;
+ }
+ }
+ } else {
+ json->max_nesting = 19;
+ json->allow_nan = 0;
+ json->create_id = rb_funcall(mJSON, i_create_id, 0);
+ json->object_class = Qnil;
+ json->array_class = Qnil;
+ }
+ json->current_nesting = 0;
+ json->len = len;
+ json->source = ptr;
+ json->Vsource = source;
+ return self;
+}
+
+/*
+ * 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_raise(eParserError, "%u: unexpected token at '%s'", __LINE__, p);
+ return Qnil;
+ }
+}
+
+static JSON_Parser *JSON_allocate()
+{
+ JSON_Parser *json = ALLOC(JSON_Parser);
+ MEMZERO(json, JSON_Parser, 1);
+ return json;
+}
+
+static void JSON_mark(JSON_Parser *json)
+{
+ 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);
+}
+
+static void JSON_free(JSON_Parser *json)
+{
+ ruby_xfree(json);
+}
+
+static VALUE cJSON_parser_s_allocate(VALUE klass)
+{
+ JSON_Parser *json = JSON_allocate();
+ return Data_Wrap_Struct(klass, JSON_mark, JSON_free, json);
+}
+
+/*
+ * 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()
+{
+ 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_key_p = rb_intern("key?");
+ i_deep_const_get = rb_intern("deep_const_get");
+#ifdef HAVE_RUBY_ENCODING_H
+ CEncoding_UTF_8 = rb_funcall(rb_path2class("Encoding"), rb_intern("find"), 1, rb_str_new2("utf-8"));
+ CEncoding_UTF_16BE = rb_funcall(rb_path2class("Encoding"), rb_intern("find"), 1, rb_str_new2("utf-16be"));
+ CEncoding_UTF_16LE = rb_funcall(rb_path2class("Encoding"), rb_intern("find"), 1, rb_str_new2("utf-16le"));
+ CEncoding_UTF_32BE = rb_funcall(rb_path2class("Encoding"), rb_intern("find"), 1, rb_str_new2("utf-32be"));
+ CEncoding_UTF_32LE = rb_funcall(rb_path2class("Encoding"), rb_intern("find"), 1, rb_str_new2("utf-32le"));
+ CEncoding_ASCII_8BIT = rb_funcall(rb_path2class("Encoding"), rb_intern("find"), 1, rb_str_new2("ascii-8bit"));
+ i_encoding = rb_intern("encoding");
+ i_encode = rb_intern("encode");
+ i_encode_bang = rb_intern("encode!");
+ i_force_encoding = rb_intern("force_encoding");
+#else
+ i_iconv = rb_intern("iconv");
+#endif
+}