peg2 0.1.5 
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PEG+ (Parsing expression grammar) parser source code generator, command line tool.
// Generated by 'yaml2podo'
// Version:
// https://pub.dev/packages/peg2
// Options:
// inlineNonterminals: true
// inlineSubterminals: true
// memoize: false
class JsonParser {
static const _eof = 0x110000;
FormatException error;
int _c;
int _cp;
int _failed;
int _failurePos;
bool _hasMalformed;
String _input;
int _pos;
bool _predicate;
dynamic _result;
bool _success;
List<String> _terminals;
int _terminalCount;
dynamic parse(String text) {
if (text == null) {
throw ArgumentError.notNull('text');
}
_input = text;
_reset();
final result = _parseJson(0, true);
_buildError();
_terminals = null;
_input = null;
return result;
}
void _buildError() {
if (_success) {
error = null;
return;
}
String escape(int c) {
switch (c) {
case 10:
return r'\n';
case 13:
return r'\r';
case 09:
return r'\t';
case _eof:
return '';
}
return String.fromCharCode(c);
}
String getc(int position) {
if (position < _input.length) {
return "'${escape(_input.codeUnitAt(position))}'";
}
return 'end of file';
}
final temp = _terminals.take(_terminalCount).toList();
temp.sort((e1, e2) => e1.compareTo(e2));
final terminals = temp.toSet();
if (terminals.isNotEmpty) {
if (!_hasMalformed) {
final sb = StringBuffer();
sb.write('Expected ');
sb.write(terminals.join(', '));
sb.write(' but found ');
sb.write(getc(_failurePos));
final message = sb.toString();
error = FormatException(message, _input, _failurePos);
} else {
final reason =
_failurePos < _input.length ? 'Malformed' : 'Unterminated';
final sb = StringBuffer();
sb.write(reason);
sb.write(' ');
sb.write(terminals.join(', '));
final message = sb.toString();
error = FormatException(message, _input, _failurePos);
}
} else {
final sb = StringBuffer();
sb.write('Unexpected character ');
sb.write(getc(_failurePos));
final message = sb.toString();
error = FormatException(message, _input, _failurePos);
}
}
void _fail(int failed) {
if (!_predicate) {
if (_failurePos < failed) {
_failurePos = failed;
_hasMalformed = false;
_terminalCount = 0;
}
if (_failed < failed) {
_failed = failed;
}
}
_success = false;
}
void _failure(String name) {
var flagged = true;
final malformed = _failed > _pos;
if (malformed && !_hasMalformed) {
_hasMalformed = true;
_terminalCount = 0;
} else if (_hasMalformed) {
flagged = false;
}
if (flagged && _failed >= _failurePos) {
if (_terminals.length <= _terminalCount) {
_terminals.length += 50;
}
_terminals[_terminalCount++] = name;
}
}
void _getch() {
_cp = _pos;
var pos = _pos;
if (pos < _input.length) {
final leading = _input.codeUnitAt(pos++);
if ((leading & 0xFC00) == 0xD800 && _pos < _input.length) {
final trailing = _input.codeUnitAt(pos);
if ((trailing & 0xFC00) == 0xDC00) {
_c = 0x10000 + ((leading & 0x3FF) << 10) + (trailing & 0x3FF);
pos++;
} else {
_c = leading;
}
} else {
_c = leading;
}
} else {
_c = _eof;
}
}
int _matchAny() {
if (_cp != _pos) {
_getch();
}
int result;
if (_c != _eof) {
result = _c;
_pos += _c < 0xffff ? 1 : 2;
_c = null;
_success = true;
} else {
_fail(_pos);
}
return result;
}
int _matchChar(int c) {
if (_cp != _pos) {
_getch();
}
int result;
if (_c != _eof && _c == c) {
result = _c;
_pos += _c < 0xffff ? 1 : 2;
_c = null;
_success = true;
} else {
_fail(_pos);
}
return result;
}
int _matchRanges(List<int> ranges) {
if (_cp != _pos) {
_getch();
}
int result;
_success = false;
if (_c != _eof) {
for (var i = 0; i < ranges.length; i += 2) {
if (ranges[i] <= _c) {
if (ranges[i + 1] >= _c) {
result = _c;
_pos += _c < 0xffff ? 1 : 2;
_c = null;
_success = true;
break;
}
} else {
break;
}
}
}
if (!_success) {
_fail(_pos);
}
return result;
}
String _matchString(String text) {
String result;
final length = text.length;
final rest = _input.length - _pos;
final count = length > rest ? rest : length;
var pos = _pos;
var i = 0;
for (; i < count; i++, pos++) {
if (text.codeUnitAt(i) != _input.codeUnitAt(pos)) {
break;
}
}
if (i == length) {
_pos += length;
_success = true;
result = text;
} else {
_fail(_pos + i);
}
return result;
}
bool _memoized(int id, int cid) {
return false;
}
void _memoize(result) {
//
}
void _reset() {
_c = _eof;
_cp = -1;
_failurePos = -1;
_hasMalformed = false;
_pos = 0;
_predicate = false;
_terminalCount = 0;
_terminals = [];
_terminals.length = 20;
}
dynamic _parseJson(int $0, bool $1) {
dynamic $2;
dynamic $3;
dynamic $4;
var $5 = _c;
var $6 = _cp;
var $7 = _pos;
_parse_leading_spaces(3, false);
var $9 = _parseValue(4, $1);
if (_success) {
_parse_end_of_file(5, false);
if (_success) {
$4 = $9;
}
}
if (!_success) {
_c = $5;
_cp = $6;
_pos = $7;
}
$3 = $4;
$2 = $3;
return $2;
}
dynamic _parseValue(int $0, bool $1) {
dynamic $2;
dynamic $3;
for (;;) {
List $4;
List $5;
List $6;
var $7 = _c;
var $8 = _cp;
var $9 = _pos;
_parse_$LeftSquareBracket(23, false);
if (_success) {
List $11;
List $12;
var $13 = _c;
var $14 = _cp;
var $15 = _pos;
var $16 = _parseValue(29, $1);
if (_success) {
List $17;
if ($1) {
$17 = [];
}
for (;;) {
dynamic $18;
dynamic $19;
var $20 = _c;
var $21 = _cp;
var $22 = _pos;
_parse_$Comma(33, false);
if (_success) {
var $24 = _parseValue(34, $1);
if (_success) {
$19 = $24;
}
}
if (!_success) {
_c = $20;
_cp = $21;
_pos = $22;
}
$18 = $19;
if (!_success) {
_success = true;
break;
}
if ($1) {
$17.add($18);
}
}
{
var v = $16;
var n = $17;
List $$;
$$ = [v, ...n];
$12 = $$;
}
}
if (!_success) {
_c = $13;
_cp = $14;
_pos = $15;
}
$11 = $12;
_parse_$RightSquareBracket(26, false);
if (_success) {
var v = $11;
List $$;
$$ = v ?? [];
$6 = $$;
}
}
if (!_success) {
_c = $7;
_cp = $8;
_pos = $9;
}
$5 = $6;
if (_success) {
$4 = $5;
}
if (_success) {
$3 = $4;
break;
}
dynamic $26;
var $27 = _parse_false(10, $1);
if (_success) {
$26 = $27;
}
if (_success) {
$3 = $26;
break;
}
dynamic $28;
var $29 = _parse_null(12, $1);
if (_success) {
$28 = $29;
}
if (_success) {
$3 = $28;
break;
}
dynamic $30;
var $31 = _parse_true(14, $1);
if (_success) {
$30 = $31;
}
if (_success) {
$3 = $30;
break;
}
Map<String, dynamic> $32;
Map<String, dynamic> $33;
Map<String, dynamic> $34;
var $35 = _c;
var $36 = _cp;
var $37 = _pos;
_parse_$LeftBrace(37, false);
if (_success) {
List<MapEntry<String, dynamic>> $39;
List<MapEntry<String, dynamic>> $40;
var $41 = _c;
var $42 = _cp;
var $43 = _pos;
var $44 = _parseMember(43, $1);
if (_success) {
List<MapEntry<String, dynamic>> $45;
if ($1) {
$45 = [];
}
for (;;) {
MapEntry<String, dynamic> $46;
MapEntry<String, dynamic> $47;
var $48 = _c;
var $49 = _cp;
var $50 = _pos;
_parse_$Comma(47, false);
if (_success) {
var $52 = _parseMember(48, $1);
if (_success) {
$47 = $52;
}
}
if (!_success) {
_c = $48;
_cp = $49;
_pos = $50;
}
$46 = $47;
if (!_success) {
_success = true;
break;
}
if ($1) {
$45.add($46);
}
}
{
var m = $44;
var n = $45;
List<MapEntry<String, dynamic>> $$;
$$ = [m, ...n];
$40 = $$;
}
}
if (!_success) {
_c = $41;
_cp = $42;
_pos = $43;
}
$39 = $40;
_parse_$RightBrace(40, false);
if (_success) {
var m = $39;
Map<String, dynamic> $$;
$$ = <String, dynamic>{}..addEntries(m ?? []);
$34 = $$;
}
}
if (!_success) {
_c = $35;
_cp = $36;
_pos = $37;
}
$33 = $34;
if (_success) {
$32 = $33;
}
if (_success) {
$3 = $32;
break;
}
num $54;
var $55 = _parse_number(18, $1);
if (_success) {
$54 = $55;
}
if (_success) {
$3 = $54;
break;
}
String $56;
var $57 = _parse_string(20, $1);
if (_success) {
$56 = $57;
}
if (_success) {
$3 = $56;
}
break;
}
$2 = $3;
return $2;
}
MapEntry<String, dynamic> _parseMember(int $0, bool $1) {
MapEntry<String, dynamic> $2;
MapEntry<String, dynamic> $3;
MapEntry<String, dynamic> $4;
var $5 = _c;
var $6 = _cp;
var $7 = _pos;
var $8 = _parse_string(51, $1);
if (_success) {
_parse_$Colon(52, false);
if (_success) {
var $10 = _parseValue(53, $1);
if (_success) {
var k = $8;
var v = $10;
MapEntry<String, dynamic> $$;
$$ = MapEntry(k, v);
$4 = $$;
}
}
}
if (!_success) {
_c = $5;
_cp = $6;
_pos = $7;
}
$3 = $4;
$2 = $3;
return $2;
}
dynamic _parse_end_of_file(int $0, bool $1) {
_failed = -1;
dynamic $2;
dynamic $3;
dynamic $4;
var $5 = _c;
var $6 = _cp;
var $7 = _pos;
var $8 = _predicate;
var $9 = $1;
_predicate = true;
$1 = false;
_matchAny();
var $11;
_success = !_success;
_c = $5;
_cp = $6;
_pos = $7;
_predicate = $8;
$1 = $9;
if (_success) {
$4 = $11;
}
$3 = $4;
$2 = $3;
if (!_success) {
_failure('\'end of file\'');
}
return $2;
}
dynamic _parse_false(int $0, bool $1) {
_failed = -1;
dynamic $2;
dynamic $3;
dynamic $4;
var $5 = _c;
var $6 = _cp;
var $7 = _pos;
_matchString('false');
if (_success) {
_parse$$spacing(61, false);
{
dynamic $$;
$$ = false;
$4 = $$;
}
}
if (!_success) {
_c = $5;
_cp = $6;
_pos = $7;
}
$3 = $4;
$2 = $3;
if (!_success) {
_failure('\'false\'');
}
return $2;
}
List<int> _parse_leading_spaces(int $0, bool $1) {
_failed = -1;
List<int> $2;
List<int> $3;
List<int> $4;
var $5 = _parse$$spacing(64, $1);
$4 = $5;
$3 = $4;
$2 = $3;
if (!_success) {
_failure('\'leading spaces\'');
}
return $2;
}
dynamic _parse_null(int $0, bool $1) {
_failed = -1;
dynamic $2;
dynamic $3;
dynamic $4;
var $5 = _c;
var $6 = _cp;
var $7 = _pos;
_matchString('null');
if (_success) {
_parse$$spacing(68, false);
{
dynamic $$;
$$ = null;
$4 = $$;
}
}
if (!_success) {
_c = $5;
_cp = $6;
_pos = $7;
}
$3 = $4;
$2 = $3;
if (!_success) {
_failure('\'null\'');
}
return $2;
}
dynamic _parse_true(int $0, bool $1) {
_failed = -1;
dynamic $2;
dynamic $3;
dynamic $4;
var $5 = _c;
var $6 = _cp;
var $7 = _pos;
_matchString('true');
if (_success) {
_parse$$spacing(72, false);
{
dynamic $$;
$$ = true;
$4 = $$;
}
}
if (!_success) {
_c = $5;
_cp = $6;
_pos = $7;
}
$3 = $4;
$2 = $3;
if (!_success) {
_failure('\'true\'');
}
return $2;
}
String _parse_string(int $0, bool $1) {
_failed = -1;
String $2;
String $3;
String $4;
var $5 = _c;
var $6 = _cp;
var $7 = _pos;
_matchString('\"');
if (_success) {
List<int> $9;
if ($1) {
$9 = [];
}
for (;;) {
int $10;
for (;;) {
int $11;
var $12 = _c;
var $13 = _cp;
var $14 = _pos;
_matchChar(92);
if (_success) {
int $16;
for (;;) {
int $17;
var $18 = _matchChar(34);
if (_success) {
$17 = $18;
}
if (_success) {
$16 = $17;
break;
}
int $19;
var $20 = _matchChar(92);
if (_success) {
$19 = $20;
}
if (_success) {
$16 = $19;
break;
}
int $21;
var $22 = _matchChar(47);
if (_success) {
$21 = $22;
}
if (_success) {
$16 = $21;
break;
}
int $23;
_matchChar(98);
if (_success) {
int $$;
$$ = 0x8;
$23 = $$;
}
if (_success) {
$16 = $23;
break;
}
int $25;
_matchChar(102);
if (_success) {
int $$;
$$ = 0xC;
$25 = $$;
}
if (_success) {
$16 = $25;
break;
}
int $27;
_matchChar(110);
if (_success) {
int $$;
$$ = 0xA;
$27 = $$;
}
if (_success) {
$16 = $27;
break;
}
int $29;
_matchChar(114);
if (_success) {
int $$;
$$ = 0xD;
$29 = $$;
}
if (_success) {
$16 = $29;
break;
}
int $31;
_matchChar(116);
if (_success) {
int $$;
$$ = 0x9;
$31 = $$;
}
if (_success) {
$16 = $31;
break;
}
int $33;
var $34 = _c;
var $35 = _cp;
var $36 = _pos;
_matchChar(117);
if (_success) {
int $38;
int $39;
var $40 = _c;
var $41 = _cp;
var $42 = _pos;
var $43 = _parse$$hexdig(165, $1);
if (_success) {
var $44 = _parse$$hexdig(166, $1);
if (_success) {
var $45 = _parse$$hexdig(167, $1);
if (_success) {
var $46 = _parse$$hexdig(168, $1);
if (_success) {
var a = $43;
var b = $44;
var c = $45;
var d = $46;
int $$;
$$ = a * 0xfff + b * 0xff + c * 0xf + d;
$39 = $$;
}
}
}
}
if (!_success) {
_c = $40;
_cp = $41;
_pos = $42;
}
$38 = $39;
if (_success) {
$33 = $38;
}
}
if (!_success) {
_c = $34;
_cp = $35;
_pos = $36;
}
if (_success) {
$16 = $33;
}
break;
}
if (_success) {
$11 = $16;
}
}
if (!_success) {
_c = $12;
_cp = $13;
_pos = $14;
}
if (_success) {
$10 = $11;
break;
}
int $47;
int $48;
for (;;) {
int $49;
const $50 = [32, 33];
var $51 = _matchRanges($50);
if (_success) {
$49 = $51;
}
if (_success) {
$48 = $49;
break;
}
int $52;
const $53 = [35, 91];
var $54 = _matchRanges($53);
if (_success) {
$52 = $54;
}
if (_success) {
$48 = $52;
break;
}
int $55;
const $56 = [93, 1114111];
var $57 = _matchRanges($56);
if (_success) {
$55 = $57;
}
if (_success) {
$48 = $55;
}
break;
}
if (_success) {
$47 = $48;
}
if (_success) {
$10 = $47;
}
break;
}
if (!_success) {
_success = true;
break;
}
if ($1) {
$9.add($10);
}
}
_matchString('\"');
if (_success) {
_parse$$spacing(79, false);
{
var c = $9;
String $$;
$$ = String.fromCharCodes(c);
$4 = $$;
}
}
}
if (!_success) {
_c = $5;
_cp = $6;
_pos = $7;
}
$3 = $4;
$2 = $3;
if (!_success) {
_failure('\'string\'');
}
return $2;
}
num _parse_number(int $0, bool $1) {
_failed = -1;
num $2;
num $3;
num $4;
var $5 = _c;
var $6 = _cp;
var $7 = _pos;
String $8;
var $9 = _pos;
var $10 = $1;
$1 = false;
int $11;
int $12;
var $13 = _c;
var $14 = _cp;
var $15 = _pos;
var $16 = _matchChar(45);
_success = true;
if (_success) {
int $17;
for (;;) {
int $18;
var $19 = _matchChar(48);
if (_success) {
$18 = $19;
}
if (_success) {
$17 = $18;
break;
}
int $20;
var $21 = _c;
var $22 = _cp;
var $23 = _pos;
const $24 = [49, 57];
var $25 = _matchRanges($24);
if (_success) {
List<int> $26;
if ($1) {
$26 = [];
}
for (;;) {
const $27 = [48, 57];
var $28 = _matchRanges($27);
if (!_success) {
_success = true;
break;
}
if ($1) {
$26.add($28);
}
}
if (_success) {
$20 = $25;
}
}
if (!_success) {
_c = $21;
_cp = $22;
_pos = $23;
}
if (_success) {
$17 = $20;
}
break;
}
if (_success) {
int $29;
int $30;
var $31 = _c;
var $32 = _cp;
var $33 = _pos;
var $34 = _matchChar(46);
if (_success) {
List<int> $35;
if ($1) {
$35 = [];
}
var $36 = false;
for (;;) {
const $37 = [48, 57];
var $38 = _matchRanges($37);
if (!_success) {
_success = $36;
if (!_success) {
$35 = null;
}
break;
}
if ($1) {
$35.add($38);
}
$36 = true;
}
if (_success) {
$30 = $34;
}
}
if (!_success) {
_c = $31;
_cp = $32;
_pos = $33;
}
$29 = $30;
_success = true;
if (_success) {
int $39;
int $40;
var $41 = _c;
var $42 = _cp;
var $43 = _pos;
const $44 = [69, 69, 101, 101];
var $45 = _matchRanges($44);
if (_success) {
List<int> $46;
if ($1) {
$46 = [];
}
var $47 = false;
for (;;) {
const $48 = [32, 32, 43, 93];
var $49 = _matchRanges($48);
if (!_success) {
_success = $47;
if (!_success) {
$46 = null;
}
break;
}
if ($1) {
$46.add($49);
}
$47 = true;
}
if (_success) {
$40 = $45;
}
}
if (!_success) {
_c = $41;
_cp = $42;
_pos = $43;
}
$39 = $40;
_success = true;
if (_success) {
$12 = $16;
}
}
}
}
if (!_success) {
_c = $13;
_cp = $14;
_pos = $15;
}
$11 = $12;
if (_success) {
$8 = _input.substring($9, _pos);
}
$1 = $10;
if (_success) {
_parse$$spacing(106, false);
{
var n = $8;
num $$;
$$ = num.parse(n);
$4 = $$;
}
}
if (!_success) {
_c = $5;
_cp = $6;
_pos = $7;
}
$3 = $4;
$2 = $3;
if (!_success) {
_failure('\'number\'');
}
return $2;
}
String _parse_$LeftBrace(int $0, bool $1) {
_failed = -1;
String $2;
String $3;
String $4;
var $5 = _c;
var $6 = _cp;
var $7 = _pos;
var $8 = _matchString('{');
if (_success) {
_parse$$spacing(110, false);
$4 = $8;
}
if (!_success) {
_c = $5;
_cp = $6;
_pos = $7;
}
$3 = $4;
$2 = $3;
if (!_success) {
_failure('\'{\'');
}
return $2;
}
String _parse_$RightBrace(int $0, bool $1) {
_failed = -1;
String $2;
String $3;
String $4;
var $5 = _c;
var $6 = _cp;
var $7 = _pos;
var $8 = _matchString('}');
if (_success) {
_parse$$spacing(114, false);
$4 = $8;
}
if (!_success) {
_c = $5;
_cp = $6;
_pos = $7;
}
$3 = $4;
$2 = $3;
if (!_success) {
_failure('\'}\'');
}
return $2;
}
String _parse_$LeftSquareBracket(int $0, bool $1) {
_failed = -1;
String $2;
String $3;
String $4;
var $5 = _c;
var $6 = _cp;
var $7 = _pos;
var $8 = _matchString('[');
if (_success) {
_parse$$spacing(118, false);
$4 = $8;
}
if (!_success) {
_c = $5;
_cp = $6;
_pos = $7;
}
$3 = $4;
$2 = $3;
if (!_success) {
_failure('\'[\'');
}
return $2;
}
String _parse_$RightSquareBracket(int $0, bool $1) {
_failed = -1;
String $2;
String $3;
String $4;
var $5 = _c;
var $6 = _cp;
var $7 = _pos;
var $8 = _matchString(']');
if (_success) {
_parse$$spacing(122, false);
$4 = $8;
}
if (!_success) {
_c = $5;
_cp = $6;
_pos = $7;
}
$3 = $4;
$2 = $3;
if (!_success) {
_failure('\']\'');
}
return $2;
}
String _parse_$Comma(int $0, bool $1) {
_failed = -1;
String $2;
String $3;
String $4;
var $5 = _c;
var $6 = _cp;
var $7 = _pos;
var $8 = _matchString(',');
if (_success) {
_parse$$spacing(126, false);
$4 = $8;
}
if (!_success) {
_c = $5;
_cp = $6;
_pos = $7;
}
$3 = $4;
$2 = $3;
if (!_success) {
_failure('\',\'');
}
return $2;
}
String _parse_$Colon(int $0, bool $1) {
_failed = -1;
String $2;
String $3;
String $4;
var $5 = _c;
var $6 = _cp;
var $7 = _pos;
var $8 = _matchString(':');
if (_success) {
_parse$$spacing(130, false);
$4 = $8;
}
if (!_success) {
_c = $5;
_cp = $6;
_pos = $7;
}
$3 = $4;
$2 = $3;
if (!_success) {
_failure('\':\'');
}
return $2;
}
int _parse$$digit(int $0, bool $1) {
int $2;
int $3;
int $4;
const $5 = [48, 57];
_matchRanges($5);
if (_success) {
int $$;
$$ = $$ - 48;
$4 = $$;
}
$3 = $4;
$2 = $3;
return $2;
}
int _parse$$digit1_9(int $0, bool $1) {
int $2;
int $3;
int $4;
const $5 = [49, 57];
_matchRanges($5);
if (_success) {
int $$;
$$ = $$ - 48;
$4 = $$;
}
$3 = $4;
$2 = $3;
return $2;
}
int _parse$$hexdig(int $0, bool $1) {
int $2;
int $3;
for (;;) {
int $4;
const $5 = [97, 102];
_matchRanges($5);
if (_success) {
int $$;
$$ = $$ - 97;
$4 = $$;
}
if (_success) {
$3 = $4;
break;
}
int $7;
const $8 = [65, 70];
_matchRanges($8);
if (_success) {
int $$;
$$ = $$ - 65;
$7 = $$;
}
if (_success) {
$3 = $7;
break;
}
int $10;
const $11 = [48, 57];
_matchRanges($11);
if (_success) {
int $$;
$$ = $$ - 48;
$10 = $$;
}
if (_success) {
$3 = $10;
}
break;
}
$2 = $3;
return $2;
}
List<int> _parse$$spacing(int $0, bool $1) {
List<int> $2;
List<int> $3;
List<int> $4;
List<int> $5;
if ($1) {
$5 = [];
}
for (;;) {
const $6 = [9, 10, 13, 13, 32, 32];
var $7 = _matchRanges($6);
if (!_success) {
_success = true;
break;
}
if ($1) {
$5.add($7);
}
}
$4 = $5;
$3 = $4;
$2 = $3;
return $2;
}
}
// ignore_for_file: prefer_final_locals
// ignore_for_file: unused_element
// ignore_for_file: unused_field
// ignore_for_file: unused_local_variableMetadata
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Metadata
PEG+ (Parsing expression grammar) parser source code generator, command line tool.
Repository (GitHub)
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License
unknown (LICENSE)
Dependencies
args, dart_style, lists, path, strings
