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grammars: x{min,max} repetition operator (#6640)

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* grammars: x{min,max} repetition operator + tweak +/*/? to avoid duplication of original over alternates

* grammars: handle `x{n}` and fix `x{n,n}`

* grammars: document new repetition operators

* grammars: uniform use of int for min & max

* grammars: refactor parser test

* grammar: parsing tests w/ natural pretty print of updated expectations

* grammars: much prettier print of expectations (+ TEST_GRAMMAR_PARSER_PRINT_ALL=1 to force all)

* grammars: improve test pretty print again

* grammars: pretty print rules and chars

* grammars: fix copy rule skipping

* grammars: disallow `a{,}` (not allowed in regexps)

* Update common/grammar-parser.cpp

Co-authored-by: Clint Herron <hanclinto@gmail.com>

* grammars: fix copy rule skipping (again) & display of expectations

* grammars: more test cases

* grammars: update reps parsing to bring ? / * / + closer to before

* json: use new GBNF repetitions{m,n} syntax

* grammars: update performance gotchas w/ repetition advice

* Update examples/json_schema_to_grammar.py

Co-authored-by: Clint Herron <hanclinto@gmail.com>

* Update examples/server/public/json-schema-to-grammar.mjs

Co-authored-by: Clint Herron <hanclinto@gmail.com>

* grammars: comment on rule repetitions

* grammars: ensure unambiguous number alternatives

* grammar: nit typo switched error msgs

* grammar: nit numbering in comment

* json: update numeric rule to be unambiguous

* Apply suggestions from code review

Co-authored-by: Clint Herron <hanclinto@gmail.com>

* Update examples/server/public/json-schema-to-grammar.mjs

Co-authored-by: Clint Herron <hanclinto@gmail.com>

* json: fix integral-part

* grammar: add repetition tests

---------

Co-authored-by: Clint Herron <hanclinto@gmail.com>
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144
common/grammar-parser.cpp
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@ -46,8 +46,12 @@ namespace grammar_parser {
state.rules[rule_id] = rule;
}
static bool is_digit_char(char c) {
return '0' <= c && c <= '9';
}
static bool is_word_char(char c) {
return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || c == '-' || ('0' <= c && c <= '9');
return ('a' <= c && c <= 'z') || ('A' <= c && c <= 'Z') || c == '-' || is_digit_char(c);
}
static std::pair<uint32_t, const char *> parse_hex(const char * src, int size) {
@ -99,6 +103,17 @@ namespace grammar_parser {
return pos;
}
static const char * parse_int(const char * src) {
const char * pos = src;
while (is_digit_char(*pos)) {
pos++;
}
if (pos == src) {
throw std::runtime_error(std::string("expecting integer at ") + src);
}
return pos;
}
static std::pair<uint32_t, const char *> parse_char(const char * src) {
if (*src == '\\') {
switch (src[1]) {
@ -137,6 +152,60 @@ namespace grammar_parser {
bool is_nested) {
size_t last_sym_start = out_elements.size();
const char * pos = src;
auto handle_repetitions = [&](int min_times, int max_times) {
if (last_sym_start == out_elements.size()) {
throw std::runtime_error(std::string("expecting preceding item to */+/?/{ at ") + pos);
}
// apply transformation to previous symbol (last_sym_start to end) according to
// the following rewrite rules:
// S{m,n} --> S S S (m times) S'(n-m)
// S'(x) ::= S S'(x-1) |
// (... n-m definitions of these S' rules ...)
// S'(1) ::= S |
// S{m,} --> S S S (m times) S'
// S' ::= S S' |
// S* --> S{0,}
// --> S' ::= S S' |
// S+ --> S{1,}
// --> S S'
// S' ::= S S' |
// S? --> S{0,1}
// --> S'
// S' ::= S |
std::vector<llama_grammar_element> previous_elements(out_elements.begin() + last_sym_start, out_elements.end());
if (min_times == 0) {
out_elements.resize(last_sym_start);
} else {
// Repeat the previous elements (min_times - 1) times
for (int i = 1; i < min_times; i++) {
out_elements.insert(out_elements.end(), previous_elements.begin(), previous_elements.end());
}
}
uint32_t last_rec_rule_id = 0;
auto n_opt = max_times < 0 ? 1 : max_times - min_times;
std::vector<llama_grammar_element> rec_rule(previous_elements);
for (int i = 0; i < n_opt; i++) {
rec_rule.resize(previous_elements.size());
uint32_t rec_rule_id = generate_symbol_id(state, rule_name);
if (i > 0 || max_times < 0) {
rec_rule.push_back({LLAMA_GRETYPE_RULE_REF, max_times < 0 ? rec_rule_id : last_rec_rule_id});
}
rec_rule.push_back({LLAMA_GRETYPE_ALT, 0});
rec_rule.push_back({LLAMA_GRETYPE_END, 0});
add_rule(state, rec_rule_id, rec_rule);
last_rec_rule_id = rec_rule_id;
}
if (n_opt > 0) {
out_elements.push_back({LLAMA_GRETYPE_RULE_REF, last_rec_rule_id});
}
};
while (*pos) {
if (*pos == '"') { // literal string
pos++;
@ -197,40 +266,47 @@ namespace grammar_parser {
throw std::runtime_error(std::string("expecting ')' at ") + pos);
}
pos = parse_space(pos + 1, is_nested);
} else if (*pos == '*' || *pos == '+' || *pos == '?') { // repetition operator
if (last_sym_start == out_elements.size()) {
throw std::runtime_error(std::string("expecting preceding item to */+/? at ") + pos);
}
// apply transformation to previous symbol (last_sym_start to end) according to
// rewrite rules:
// S* --> S' ::= S S' |
// S+ --> S' ::= S S' | S
// S? --> S' ::= S |
uint32_t sub_rule_id = generate_symbol_id(state, rule_name);
std::vector<llama_grammar_element> sub_rule;
// add preceding symbol to generated rule
sub_rule.insert(
sub_rule.end(), out_elements.begin() + last_sym_start, out_elements.end());
if (*pos == '*' || *pos == '+') {
// cause generated rule to recurse
sub_rule.push_back({LLAMA_GRETYPE_RULE_REF, sub_rule_id});
}
// mark start of alternate def
sub_rule.push_back({LLAMA_GRETYPE_ALT, 0});
if (*pos == '+') {
// add preceding symbol as alternate only for '+' (otherwise empty)
sub_rule.insert(
sub_rule.end(), out_elements.begin() + last_sym_start, out_elements.end());
}
sub_rule.push_back({LLAMA_GRETYPE_END, 0});
add_rule(state, sub_rule_id, sub_rule);
// in original rule, replace previous symbol with reference to generated rule
out_elements.resize(last_sym_start);
out_elements.push_back({LLAMA_GRETYPE_RULE_REF, sub_rule_id});
} else if (*pos == '*') {
pos = parse_space(pos + 1, is_nested);
handle_repetitions(0, -1);
} else if (*pos == '+') {
pos = parse_space(pos + 1, is_nested);
handle_repetitions(1, -1);
} else if (*pos == '?') {
pos = parse_space(pos + 1, is_nested);
handle_repetitions(0, 1);
} else if (*pos == '{') {
pos = parse_space(pos + 1, is_nested);
if (!is_digit_char(*pos)) {
throw std::runtime_error(std::string("expecting an int at ") + pos);
}
const char * int_end = parse_int(pos);
int min_times = std::stoul(std::string(pos, int_end - pos));
pos = parse_space(int_end, is_nested);
int max_times = -1;
if (*pos == '}') {
max_times = min_times;
pos = parse_space(pos + 1, is_nested);
} else if (*pos == ',') {
pos = parse_space(pos + 1, is_nested);
if (is_digit_char(*pos)) {
const char * int_end = parse_int(pos);
max_times = std::stoul(std::string(pos, int_end - pos));
pos = parse_space(int_end, is_nested);
}
if (*pos != '}') {
throw std::runtime_error(std::string("expecting '}' at ") + pos);
}
pos = parse_space(pos + 1, is_nested);
} else {
throw std::runtime_error(std::string("expecting ',' at ") + pos);
}
handle_repetitions(min_times, max_times);
} else {
break;
}

80
common/json-schema-to-grammar.cpp
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@ -16,58 +16,27 @@ static std::string join(Iterator begin, Iterator end, const std::string & separa
static std::string repeat(const std::string & str, size_t n);
static std::string build_repetition(const std::string & item_rule, int min_items, int max_items, const std::string & separator_rule = "", bool item_rule_is_literal = false) {
static std::string build_repetition(const std::string & item_rule, int min_items, int max_items, const std::string & separator_rule = "") {
auto has_max = max_items != std::numeric_limits<int>::max();
if (min_items == 0 && max_items == 1) {
return item_rule + "?";
}
if (separator_rule.empty()) {
if (min_items == 0 && max_items == 1) {
return item_rule + "?";
} else if (min_items == 1 && max_items == std::numeric_limits<int>::max()) {
if (min_items == 1 && !has_max) {
return item_rule + "+";
}
}
std::string result;
if (min_items > 0) {
if (item_rule_is_literal && separator_rule.empty()) {
result = "\"" + repeat(std::string(item_rule.begin() + 1, item_rule.end() - 1), min_items) + "\"";
} else if (min_items == 0 && !has_max) {
return item_rule + "*";
} else {
std::vector<std::string> items(min_items, item_rule);
result = join(items.begin(), items.end(), separator_rule.empty() ? " " : " " + separator_rule + " ");
return item_rule + "{" + std::to_string(min_items) + "," + (has_max ? std::to_string(max_items) : "") + "}";
}
}
std::function<std::string(int, bool)> opt_repetitions = [&](int up_to_n, bool prefix_with_sep) -> std::string {
auto content = prefix_with_sep && !separator_rule.empty() ? separator_rule + " " + item_rule : item_rule;
if (up_to_n == 0) {
return "";
} else if (up_to_n == 1) {
return "(" + content + ")?";
} else if (!separator_rule.empty() && !prefix_with_sep) {
return "(" + content + " " + opt_repetitions(up_to_n - 1, true) + ")?";
} else {
std::string res = repeat("(" + content + " ", up_to_n);
// strip trailing space
res = res.substr(0, res.length() - 1);
res += repeat(")?", up_to_n);
return res;
}
};
if (min_items > 0 && max_items != min_items) {
result += " ";
auto result = item_rule + " " + build_repetition("(" + separator_rule + " " + item_rule + ")", min_items == 0 ? 0 : min_items - 1, has_max ? max_items - 1 : max_items);
if (min_items == 0) {
result = "(" + result + ")?";
}
if (max_items != std::numeric_limits<int>::max()) {
result += opt_repetitions(max_items - min_items, min_items > 0);
} else {
std::string item_operator = "(" + (separator_rule.empty() ? "" : separator_rule + " ") + item_rule + ")";
if (min_items == 0 && !separator_rule.empty()) {
result = "(" + item_rule + " " + item_operator + "*)?";
} else {
result += item_operator + "*";
}
}
return result;
}
@ -78,30 +47,24 @@ struct BuiltinRule {
std::vector<std::string> deps;
};
const std::string _up_to_15_digits = build_repetition("[0-9]", 0, 15);
std::unordered_map<std::string, BuiltinRule> PRIMITIVE_RULES = {
{"boolean", {"(\"true\" | \"false\") space", {}}},
{"decimal-part", {"[0-9] " + _up_to_15_digits, {}}},
{"integral-part", {"[0-9] | [1-9] " + _up_to_15_digits, {}}},
{"decimal-part", {"[0-9]{1,16}", {}}},
{"integral-part", {"[0] | [1-9] [0-9]{0,15}", {}}},
{"number", {"(\"-\"? integral-part) (\".\" decimal-part)? ([eE] [-+]? integral-part)? space", {"integral-part", "decimal-part"}}},
{"integer", {"(\"-\"? integral-part) space", {"integral-part"}}},
{"value", {"object | array | string | number | boolean | null", {"object", "array", "string", "number", "boolean", "null"}}},
{"object", {"\"{\" space ( string \":\" space value (\",\" space string \":\" space value)* )? \"}\" space", {"string", "value"}}},
{"array", {"\"[\" space ( value (\",\" space value)* )? \"]\" space", {"value"}}},
{"uuid", {"\"\\\"\" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "
"\"-\" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "
"\"-\" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "
"\"-\" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "
"\"-\" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] \"\\\"\" space", {}}},
{"char", {"[^\"\\\\] | \"\\\\\" ([\"\\\\/bfnrt] | \"u\" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])", {}}},
{"uuid", {"\"\\\"\" [0-9a-fA-F]{8} \"-\" [0-9a-fA-F]{4} \"-\" [0-9a-fA-F]{4} \"-\" [0-9a-fA-F]{4} \"-\" [0-9a-fA-F]{12} \"\\\"\" space", {}}},
{"char", {"[^\"\\\\] | \"\\\\\" ([\"\\\\/bfnrt] | \"u\" [0-9a-fA-F]{4})", {}}},
{"string", {"\"\\\"\" char* \"\\\"\" space", {"char"}}},
{"null", {"\"null\" space", {}}},
};
std::unordered_map<std::string, BuiltinRule> STRING_FORMAT_RULES = {
{"date", {"[0-9] [0-9] [0-9] [0-9] \"-\" ( \"0\" [1-9] | \"1\" [0-2] ) \"-\" ( \"0\" [1-9] | [1-2] [0-9] | \"3\" [0-1] )", {}}},
{"time", {"([01] [0-9] | \"2\" [0-3]) \":\" [0-5] [0-9] \":\" [0-5] [0-9] ( \".\" [0-9] [0-9] [0-9] )? ( \"Z\" | ( \"+\" | \"-\" ) ( [01] [0-9] | \"2\" [0-3] ) \":\" [0-5] [0-9] )", {}}},
{"date", {"[0-9]{4} \"-\" ( \"0\" [1-9] | \"1\" [0-2] ) \"-\" ( \"0\" [1-9] | [1-2] [0-9] | \"3\" [0-1] )", {}}},
{"time", {"([01] [0-9] | \"2\" [0-3]) \":\" [0-5] [0-9] \":\" [0-5] [0-9] ( \".\" [0-9]{3} )? ( \"Z\" | ( \"+\" | \"-\" ) ( [01] [0-9] | \"2\" [0-3] ) \":\" [0-5] [0-9] )", {}}},
{"date-time", {"date \"T\" time", {"date", "time"}}},
{"date-string", {"\"\\\"\" date \"\\\"\" space", {"date"}}},
{"time-string", {"\"\\\"\" time \"\\\"\" space", {"time"}}},
@ -385,8 +348,7 @@ private:
sub_is_literal ? "\"" + sub + "\"" : sub,
min_times,
max_times,
"",
sub_is_literal
""
);
seq.back().second = false;
} else {

70
examples/json_schema_to_grammar.py
View File

@ -6,52 +6,22 @@ import re
import sys
from typing import Any, Dict, List, Set, Tuple, Union
def _build_repetition(item_rule, min_items, max_items, separator_rule=None, item_rule_is_literal=False):
def _build_repetition(item_rule, min_items, max_items, separator_rule=None):
if min_items == 0 and max_items == 1:
return f'{item_rule}?'
if not separator_rule:
if min_items == 0 and max_items == 1:
return f'{item_rule}?'
elif min_items == 1 and max_items is None:
if min_items == 1 and max_items is None:
return f'{item_rule}+'
result = ''
if min_items > 0:
if item_rule_is_literal and separator_rule is None:
result = '"' + (item_rule[1:-1] * min_items) + '"'
elif min_items == 0 and max_items is None:
return f'{item_rule}*'
else:
result = (f' {separator_rule} ' if separator_rule else ' ').join([item_rule] * min_items)
return f'{item_rule}{{{min_items},{max_items if max_items is not None else ""}}}'
def opt_repetitions(up_to_n, prefix_with_sep=False):
'''
- n=4, no sep: '(a (a (a (a)?)?)?)?'
- n=4, sep=',', prefix: '("," a ("," a ("," a ("," a)?)?)?)?'
- n=4, sep=',', no prefix: '(a ("," a ("," a ("," a)?)?)?)?'
'''
content = f'{separator_rule} {item_rule}' if prefix_with_sep and separator_rule else item_rule
if up_to_n == 0:
return ''
elif up_to_n == 1:
return f'({content})?'
elif separator_rule and not prefix_with_sep:
return f'({content} {opt_repetitions(up_to_n - 1, prefix_with_sep=True)})?'
else:
return (f'({content} ' * up_to_n).rstrip() + (')?' * up_to_n)
if min_items > 0 and max_items != min_items:
result += ' '
if max_items is not None:
result += opt_repetitions(max_items - min_items, prefix_with_sep=min_items > 0)
else:
item_operator = f'({separator_rule + " " if separator_rule else ""}{item_rule})'
if min_items == 0 and separator_rule:
result = f'({item_rule} {item_operator}*)?'
else:
result += f'{item_operator}*'
return result
result = item_rule + ' ' + _build_repetition(f'({separator_rule} {item_rule})', min_items - 1 if min_items > 0 else 0, max_items - 1 if max_items is not None else None)
return f'({result})?' if min_items == 0 else result
class BuiltinRule:
@ -59,31 +29,29 @@ class BuiltinRule:
self.content = content
self.deps = deps or []
_up_to_15_digits = _build_repetition('[0-9]', 0, 15)
# whitespace is constrained to a single space char to prevent model "running away" in
# whitespace. Also maybe improves generation quality?
SPACE_RULE = '" "?'
PRIMITIVE_RULES = {
'boolean' : BuiltinRule('("true" | "false") space', []),
'decimal-part' : BuiltinRule('[0-9] ' + _up_to_15_digits, []),
'integral-part': BuiltinRule('[0-9] | [1-9] ' + _up_to_15_digits, []),
'decimal-part' : BuiltinRule('[0-9]{1,16}', []),
'integral-part': BuiltinRule('[0] | [1-9] [0-9]{0,15}', []),
'number' : BuiltinRule('("-"? integral-part) ("." decimal-part)? ([eE] [-+]? integral-part)? space', ['integral-part', 'decimal-part']),
'integer' : BuiltinRule('("-"? integral-part) space', ['integral-part']),
'value' : BuiltinRule('object | array | string | number | boolean | null', ['object', 'array', 'string', 'number', 'boolean', 'null']),
'object' : BuiltinRule('"{" space ( string ":" space value ("," space string ":" space value)* )? "}" space', ['string', 'value']),
'array' : BuiltinRule('"[" space ( value ("," space value)* )? "]" space', ['value']),
'uuid' : BuiltinRule(r'"\"" ' + ' "-" '.join('[0-9a-fA-F]' * n for n in [8, 4, 4, 4, 12]) + r' "\"" space', []),
'char' : BuiltinRule(r'[^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])', []),
'uuid' : BuiltinRule(r'"\"" [0-9a-fA-F]{8} "-" [0-9a-fA-F]{4} "-" [0-9a-fA-F]{4} "-" [0-9a-fA-F]{4} "-" [0-9a-fA-F]{12} "\"" space', []),
'char' : BuiltinRule(r'[^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})', []),
'string' : BuiltinRule(r'"\"" char* "\"" space', ['char']),
'null' : BuiltinRule('"null" space', []),
}
# TODO: support "uri", "email" string formats
STRING_FORMAT_RULES = {
'date' : BuiltinRule('[0-9] [0-9] [0-9] [0-9] "-" ( "0" [1-9] | "1" [0-2] ) "-" ( \"0\" [1-9] | [1-2] [0-9] | "3" [0-1] )', []),
'time' : BuiltinRule('([01] [0-9] | "2" [0-3]) ":" [0-5] [0-9] ":" [0-5] [0-9] ( "." [0-9] [0-9] [0-9] )? ( "Z" | ( "+" | "-" ) ( [01] [0-9] | "2" [0-3] ) ":" [0-5] [0-9] )', []),
'date' : BuiltinRule('[0-9]{4} "-" ( "0" [1-9] | "1" [0-2] ) "-" ( \"0\" [1-9] | [1-2] [0-9] | "3" [0-1] )', []),
'time' : BuiltinRule('([01] [0-9] | "2" [0-3]) ":" [0-5] [0-9] ":" [0-5] [0-9] ( "." [0-9]{3} )? ( "Z" | ( "+" | "-" ) ( [01] [0-9] | "2" [0-3] ) ":" [0-5] [0-9] )', []),
'date-time' : BuiltinRule('date "T" time', ['date', 'time']),
'date-string' : BuiltinRule('"\\"" date "\\"" space', ['date']),
'time-string' : BuiltinRule('"\\"" time "\\"" space', ['time']),
@ -333,7 +301,7 @@ class SchemaConverter:
sub_rule_ids[sub] = id
sub = id
seq[-1] = (_build_repetition(f'"{sub}"' if sub_is_literal else sub, min_times, max_times, item_rule_is_literal=sub_is_literal), False)
seq[-1] = (_build_repetition(f'"{sub}"' if sub_is_literal else sub, min_times, max_times), False)
else:
literal = ''
while i < length:

2
examples/pydantic_models_to_grammar.py
View File

@ -624,7 +624,7 @@ string ::= "\"" (
"\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
)* "\"" ws
ws ::= ([ \t\n] ws)?
float ::= ("-"? ([0-9] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? ws
float ::= ("-"? ([0] | [1-9] [0-9]*)) ("." [0-9]+)? ([eE] [-+]? [0-9]+)? ws
integer ::= [0-9]+"""

67
examples/server/public/json-schema-to-grammar.mjs
View File

@ -2,57 +2,26 @@
const SPACE_RULE = '" "?';
function _buildRepetition(itemRule, minItems, maxItems, opts={}) {
if (minItems === 0 && maxItems === 1) {
return `${itemRule}?`;
}
const separatorRule = opts.separatorRule ?? '';
const itemRuleIsLiteral = opts.itemRuleIsLiteral ?? false
if (separatorRule === '') {
if (minItems === 0 && maxItems === 1) {
return `${itemRule}?`;
} else if (minItems === 1 && maxItems === undefined) {
if (minItems === 1 && maxItems === undefined) {
return `${itemRule}+`;
}
}
let result = '';
if (minItems > 0) {
if (itemRuleIsLiteral && separatorRule === '') {
result = `"${itemRule.slice(1, -1).repeat(minItems)}"`;
} else if (minItems === 0 && maxItems === undefined) {
return `${itemRule}*`;
} else {
result = Array.from({ length: minItems }, () => itemRule)
.join(separatorRule !== '' ? ` ${separatorRule} ` : ' ');
return `${itemRule}{${minItems},${maxItems !== undefined ? maxItems : ''}}`;
}
}
const optRepetitions = (upToN, prefixWithSep=false) => {
const content = separatorRule !== '' && prefixWithSep ? `${separatorRule} ${itemRule}` : itemRule;
if (upToN === 0) {
return '';
} else if (upToN === 1) {
return `(${content})?`;
} else if (separatorRule !== '' && !prefixWithSep) {
return `(${content} ${optRepetitions(upToN - 1, true)})?`;
} else {
return Array.from({ length: upToN }, () => `(${content}`).join(' ').trim() + Array.from({ length: upToN }, () => ')?').join('');
}
};
if (minItems > 0 && maxItems !== minItems) {
result += ' ';
}
if (maxItems !== undefined) {
result += optRepetitions(maxItems - minItems, minItems > 0);
} else {
const itemOperator = `(${separatorRule !== '' ? separatorRule + ' ' : ''}${itemRule})`;
if (minItems === 0 && separatorRule !== '') {
result = `(${itemRule} ${itemOperator}*)?`;
} else {
result += `${itemOperator}*`;
}
}
return result;
const result = itemRule + ' ' + _buildRepetition(`(${separatorRule} ${itemRule})`, minItems > 0 ? minItems - 1 : 0, maxItems !== undefined ? maxItems - 1 : undefined);
return minItems === 0 ? `(${result})?` : result;
}
class BuiltinRule {
@ -62,27 +31,25 @@ class BuiltinRule {
}
}
const UP_TO_15_DIGITS = _buildRepetition('[0-9]', 0, 15);
const PRIMITIVE_RULES = {
boolean : new BuiltinRule('("true" | "false") space', []),
'decimal-part' : new BuiltinRule('[0-9] ' + UP_TO_15_DIGITS, []),
'integral-part': new BuiltinRule('[0-9] | [1-9] ' + UP_TO_15_DIGITS, []),
'decimal-part' : new BuiltinRule('[0-9]{1,16}', []),
'integral-part': new BuiltinRule('[0] | [1-9] [0-9]{0,15}', []),
number : new BuiltinRule('("-"? integral-part) ("." decimal-part)? ([eE] [-+]? integral-part)? space', ['integral-part', 'decimal-part']),
integer : new BuiltinRule('("-"? integral-part) space', ['integral-part']),
value : new BuiltinRule('object | array | string | number | boolean | null', ['object', 'array', 'string', 'number', 'boolean', 'null']),
object : new BuiltinRule('"{" space ( string ":" space value ("," space string ":" space value)* )? "}" space', ['string', 'value']),
array : new BuiltinRule('"[" space ( value ("," space value)* )? "]" space', ['value']),
uuid : new BuiltinRule('"\\"" ' + [8, 4, 4, 4, 12].map(n => [...new Array(n)].map(_ => '[0-9a-fA-F]').join('')).join(' "-" ') + ' "\\"" space', []),
char : new BuiltinRule(`[^"\\\\] | "\\\\" (["\\\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])`, []),
uuid : new BuiltinRule('"\\"" [0-9a-fA-F]{8} "-" [0-9a-fA-F]{4} "-" [0-9a-fA-F]{4} "-" [0-9a-fA-F]{4} "-" [0-9a-fA-F]{12} "\\"" space', []),
char : new BuiltinRule(`[^"\\\\] | "\\\\" (["\\\\/bfnrt] | "u" [0-9a-fA-F]{4})`, []),
string : new BuiltinRule(`"\\"" char* "\\"" space`, ['char']),
null : new BuiltinRule('"null" space', []),
};
// TODO: support "uri", "email" string formats
const STRING_FORMAT_RULES = {
'date' : new BuiltinRule('[0-9] [0-9] [0-9] [0-9] "-" ( "0" [1-9] | "1" [0-2] ) "-" ( \"0\" [1-9] | [1-2] [0-9] | "3" [0-1] )', []),
'time' : new BuiltinRule('([01] [0-9] | "2" [0-3]) ":" [0-5] [0-9] ":" [0-5] [0-9] ( "." [0-9] [0-9] [0-9] )? ( "Z" | ( "+" | "-" ) ( [01] [0-9] | "2" [0-3] ) ":" [0-5] [0-9] )', []),
'date' : new BuiltinRule('[0-9]{4} "-" ( "0" [1-9] | "1" [0-2] ) "-" ( \"0\" [1-9] | [1-2] [0-9] | "3" [0-1] )', []),
'time' : new BuiltinRule('([01] [0-9] | "2" [0-3]) ":" [0-5] [0-9] ":" [0-5] [0-9] ( "." [0-9]{3} )? ( "Z" | ( "+" | "-" ) ( [01] [0-9] | "2" [0-3] ) ":" [0-5] [0-9] )', []),
'date-time' : new BuiltinRule('date "T" time', ['date', 'time']),
'date-string' : new BuiltinRule('"\\"" date "\\"" space', ['date']),
'time-string' : new BuiltinRule('"\\"" time "\\"" space', ['time']),

12
grammars/README.md
View File

@ -59,9 +59,13 @@ Parentheses `()` can be used to group sequences, which allows for embedding alte
## Repetition and Optional Symbols
- `*` after a symbol or sequence means that it can be repeated zero or more times.
- `+` denotes that the symbol or sequence should appear one or more times.
- `?` makes the preceding symbol or sequence optional.
- `*` after a symbol or sequence means that it can be repeated zero or more times (equivalent to `{0,}`).
- `+` denotes that the symbol or sequence should appear one or more times (equivalent to `{1,}`).
- `?` makes the preceding symbol or sequence optional (equivalent to `{0,1}`).
- `{m}` repeats the precedent symbol or sequence exactly `m` times
- `{m,}` repeats the precedent symbol or sequence at least `m` times
- `{m,n}` repeats the precedent symbol or sequence at between `m` and `n` times (included)
- `{0,n}` repeats the precedent symbol or sequence at most `n` times (included)
## Comments and newlines
@ -98,4 +102,4 @@ Grammars currently have performance gotchas (see https://github.com/ggerganov/ll
A common pattern is to allow repetitions of a pattern `x` up to N times.
While semantically correct, the syntax `x? x? x?.... x?` (with N repetitions) will result in extremely slow inference. Instead, you can write `(x (x (x ... (x)?...)?)?)?` (w/ N-deep nesting)
While semantically correct, the syntax `x? x? x?.... x?` (with N repetitions) may result in extremely slow sampling. Instead, you can write `x{0,N}` (or `(x (x (x ... (x)?...)?)?)?` w/ N-deep nesting in earlier llama.cpp versions).

76
tests/test-grammar-integration.cpp
View File

@ -292,6 +292,82 @@ static void test_quantifiers() {
"catyyy",
}
);
test_grammar(
"simple exact repetition",
// Grammar
R"""(
root ::= [ab]{4}
)""",
// Passing strings
{
"aaaa",
"bbbb",
"abab",
},
// Failing strings
{
"a",
"b",
"aaaaa",
}
);
test_grammar(
"simple min repetition",
// Grammar
R"""(
root ::= [ab]{4,}
)""",
// Passing strings
{
"aaaa",
"aaaaab",
"bbbb",
"ababab",
},
// Failing strings
{
"",
"aba",
}
);
test_grammar(
"simple max repetition",
// Grammar
R"""(
root ::= [ab]{0,4}
)""",
// Passing strings
{
"",
"a",
"aa",
"aaa",
"aaab",
},
// Failing strings
{
"aaaaa",
}
);
test_grammar(
"min / max repetition",
// Grammar
R"""(
root ::= ("0x" [A-F0-9]{2} " "?){3,5}
)""",
// Passing strings
{
"0xFF 0x12 0xAB",
"0xFF 0x12 0xAB 0x00 0x00",
},
// Failing strings
{
"",
"0xFF",
"0xFF 0x12",
"0xFF 0x12 0xAB 0x00 0x00 0x00",
}
);
}
static void test_failure_missing_root() {

591
tests/test-grammar-parser.cpp
View File

@ -7,28 +7,79 @@
#include <cassert>
int main()
{
grammar_parser::parse_state parsed_grammar;
static const char * type_str(llama_gretype type) {
switch (type) {
case LLAMA_GRETYPE_CHAR: return "LLAMA_GRETYPE_CHAR";
case LLAMA_GRETYPE_CHAR_NOT: return "LLAMA_GRETYPE_CHAR_NOT";
case LLAMA_GRETYPE_CHAR_ALT: return "LLAMA_GRETYPE_CHAR_ALT";
case LLAMA_GRETYPE_CHAR_RNG_UPPER: return "LLAMA_GRETYPE_CHAR_RNG_UPPER";
case LLAMA_GRETYPE_RULE_REF: return "LLAMA_GRETYPE_RULE_REF";
case LLAMA_GRETYPE_ALT: return "LLAMA_GRETYPE_ALT";
case LLAMA_GRETYPE_END: return "LLAMA_GRETYPE_END";
default: return "?";
}
}
const char *grammar_bytes = R"""(root ::= (expr "=" term "\n")+
expr ::= term ([-+*/] term)*
term ::= [0-9]+)""";
static void verify_parsing(const char *grammar_bytes, const std::vector<std::pair<std::string, uint32_t>> expected, const std::vector<llama_grammar_element> &expected_rules) {
uint32_t index = 0;
grammar_parser::parse_state parsed_grammar = grammar_parser::parse(grammar_bytes);
parsed_grammar = grammar_parser::parse(grammar_bytes);
std::map<uint32_t, std::string> symbol_names;
for (auto it = parsed_grammar.symbol_ids.begin(); it != parsed_grammar.symbol_ids.end(); ++it) {
symbol_names[it->second] = it->first;
}
std::vector<std::pair<std::string, uint32_t>> expected = {
{"expr", 2},
{"expr_5", 5},
{"expr_6", 6},
{"root", 0},
{"root_1", 1},
{"root_4", 4},
{"term", 3},
{"term_7", 7},
auto print_all = [&]() {
fprintf(stderr, " verify_parsing(R\"\"\"(%s)\"\"\", {\n", grammar_bytes);
for (auto it = parsed_grammar.symbol_ids.begin(); it != parsed_grammar.symbol_ids.end(); ++it) {
fprintf(stderr, " {\"%s\", %u},\n", it->first.c_str(), it->second);
}
fprintf(stderr, " }, {\n");
for (size_t i_rule = 0; i_rule < parsed_grammar.rules.size(); i_rule++) {
fprintf(stderr, " // %s (index %zu)\n", symbol_names[i_rule].c_str(), i_rule);
auto & rule = parsed_grammar.rules[i_rule];
for (uint32_t i = 0; i < rule.size(); i++) {
std::string rule_str;
fprintf(stderr, " {%s, ", type_str(rule[i].type));
if (rule[i].type == LLAMA_GRETYPE_CHAR || rule[i].type == LLAMA_GRETYPE_CHAR_ALT ||
rule[i].type == LLAMA_GRETYPE_CHAR_NOT || rule[i].type == LLAMA_GRETYPE_CHAR_RNG_UPPER) {
char c = rule[i].value;
if (c == '\n') {
fprintf(stderr, "'\\n'");
} else if (c == '\t') {
fprintf(stderr, "'\\t'");
} else if (c == '\r') {
fprintf(stderr, "'\\r'");
} else if (c == '\0') {
fprintf(stderr, "'\\0'");
} else {
fprintf(stderr, "'%c'", c);
}
} else if (rule[i].type == LLAMA_GRETYPE_RULE_REF) {
fprintf(stderr, "/* %s */ %u", symbol_names[rule[i].value].c_str(), rule[i].value);
} else {
fprintf(stderr, "%u", rule[i].value);
}
fprintf(stderr, "},\n");
}
}
fprintf(stderr, " });\n");
};
uint32_t index = 0;
if (getenv("TEST_GRAMMAR_PARSER_PRINT_ALL")) {
print_all();
fprintf(stderr, "\n");
return;
}
fprintf(stderr, "Testing grammar:%s\n", grammar_bytes);
if (parsed_grammar.symbol_ids.size() != expected.size()) {
fprintf(stderr, "Code to update expectation (set TEST_GRAMMAR_PARSER_PRINT_ALL=1 to print all):\n");
print_all();
assert(parsed_grammar.symbol_ids.size() == expected.size());
}
for (auto it = parsed_grammar.symbol_ids.begin(); it != parsed_grammar.symbol_ids.end(); ++it)
{
std::string key = it->first;
@ -38,51 +89,18 @@ term ::= [0-9]+)""";
// pretty print error message before asserting
if (expected_pair.first != key || expected_pair.second != value)
{
fprintf(stderr, "index: %u\n", index);
fprintf(stderr, "expected_pair: %s, %u\n", expected_pair.first.c_str(), expected_pair.second);
fprintf(stderr, "actual_pair: %s, %u\n", key.c_str(), value);
fprintf(stderr, "expected_pair != actual_pair\n");
fprintf(stderr, "Code to update expectation (set TEST_GRAMMAR_PARSER_PRINT_ALL=1 to print all):\n");
print_all();
}
assert(expected_pair.first == key && expected_pair.second == value);
index++;
}
std::vector<llama_grammar_element> expected_rules = {
{LLAMA_GRETYPE_RULE_REF, 4},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_RULE_REF, 2},
{LLAMA_GRETYPE_CHAR, 61},
{LLAMA_GRETYPE_RULE_REF, 3},
{LLAMA_GRETYPE_CHAR, 10},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_RULE_REF, 3},
{LLAMA_GRETYPE_RULE_REF, 6},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_RULE_REF, 7},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_RULE_REF, 1},
{LLAMA_GRETYPE_RULE_REF, 4},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_RULE_REF, 1},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_CHAR, 45},
{LLAMA_GRETYPE_CHAR_ALT, 43},
{LLAMA_GRETYPE_CHAR_ALT, 42},
{LLAMA_GRETYPE_CHAR_ALT, 47},
{LLAMA_GRETYPE_RULE_REF, 3},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_RULE_REF, 5},
{LLAMA_GRETYPE_RULE_REF, 6},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_CHAR, 48},
{LLAMA_GRETYPE_CHAR_RNG_UPPER, 57},
{LLAMA_GRETYPE_RULE_REF, 7},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_CHAR, 48},
{LLAMA_GRETYPE_CHAR_RNG_UPPER, 57},
{LLAMA_GRETYPE_END, 0},
};
index = 0;
for (auto rule : parsed_grammar.rules)
@ -97,28 +115,306 @@ term ::= [0-9]+)""";
if (expected_element.type != element.type || expected_element.value != element.value)
{
fprintf(stderr, "index: %u\n", index);
fprintf(stderr, "expected_element: %d, %u\n", expected_element.type, expected_element.value);
fprintf(stderr, "actual_element: %d, %u\n", element.type, element.value);
fprintf(stderr, "expected_element: %s, %u\n", type_str(expected_element.type), expected_element.value);
fprintf(stderr, "actual_element: %s, %u\n", type_str(element.type), element.value);
fprintf(stderr, "expected_element != actual_element\n");
fprintf(stderr, "all elements:\n");
fprintf(stderr, "Code to update expectation (set TEST_GRAMMAR_PARSER_PRINT_ALL=1 to print all):\n");
print_all();
}
assert(expected_element.type == element.type && expected_element.value == element.value);
index++;
}
}
}
const char *longer_grammar_bytes = R"""(
root ::= (expr "=" ws term "\n")+
expr ::= term ([-+*/] term)*
term ::= ident | num | "(" ws expr ")" ws
ident ::= [a-z] [a-z0-9_]* ws
num ::= [0-9]+ ws
ws ::= [ \t\n]*
)""";
static void verify_failure(const char *grammar_bytes) {
fprintf(stderr, "Testing expected failure:%s\n", grammar_bytes);
auto result = grammar_parser::parse(grammar_bytes);
assert(result.rules.empty() && "should have failed");
}
parsed_grammar = grammar_parser::parse(longer_grammar_bytes);
int main()
{
verify_failure(R"""(
root ::= "a"{,}"
)""");
expected = {
verify_failure(R"""(
root ::= "a"{,10}"
)""");
verify_parsing(R"""(
root ::= "a"
)""", {
{"root", 0},
}, {
// root (index 0)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_END, 0},
});
verify_parsing(R"""(
root ::= "a" | [bdx-z] | [^1-3]
)""", {
{"root", 0},
}, {
// root (index 0)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_CHAR, 'b'},
{LLAMA_GRETYPE_CHAR_ALT, 'd'},
{LLAMA_GRETYPE_CHAR_ALT, 'x'},
{LLAMA_GRETYPE_CHAR_RNG_UPPER, 'z'},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_CHAR_NOT, '1'},
{LLAMA_GRETYPE_CHAR_RNG_UPPER, '3'},
{LLAMA_GRETYPE_END, 0},
});
verify_parsing(R"""(
root ::= a+
a ::= "a"
)""", {
{"a", 1},
{"root", 0},
{"root_2", 2},
}, {
// root (index 0)
{LLAMA_GRETYPE_RULE_REF, /* a */ 1},
{LLAMA_GRETYPE_RULE_REF, /* root_2 */ 2},
{LLAMA_GRETYPE_END, 0},
// a (index 1)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_END, 0},
// root_2 (index 2)
{LLAMA_GRETYPE_RULE_REF, /* a */ 1},
{LLAMA_GRETYPE_RULE_REF, /* root_2 */ 2},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
});
verify_parsing(R"""(
root ::= "a"+
)""", {
{"root", 0},
{"root_1", 1},
}, {
// root (index 0)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_RULE_REF, /* root_1 */ 1},
{LLAMA_GRETYPE_END, 0},
// root_1 (index 1)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_RULE_REF, /* root_1 */ 1},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
});
verify_parsing(R"""(
root ::= a?
a ::= "a"
)""", {
{"a", 1},
{"root", 0},
{"root_2", 2},
}, {
// root (index 0)
{LLAMA_GRETYPE_RULE_REF, /* root_2 */ 2},
{LLAMA_GRETYPE_END, 0},
// a (index 1)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_END, 0},
// root_2 (index 2)
{LLAMA_GRETYPE_RULE_REF, /* a */ 1},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
});
verify_parsing(R"""(
root ::= "a"?
)""", {
{"root", 0},
{"root_1", 1},
}, {
// root (index 0)
{LLAMA_GRETYPE_RULE_REF, /* root_1 */ 1},
{LLAMA_GRETYPE_END, 0},
// root_1 (index 1)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
});
verify_parsing(R"""(
root ::= a*
a ::= "a"
)""", {
{"a", 1},
{"root", 0},
{"root_2", 2},
}, {
// root (index 0)
{LLAMA_GRETYPE_RULE_REF, /* root_2 */ 2},
{LLAMA_GRETYPE_END, 0},
// a (index 1)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_END, 0},
// root_2 (index 2)
{LLAMA_GRETYPE_RULE_REF, /* a */ 1},
{LLAMA_GRETYPE_RULE_REF, /* root_2 */ 2},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
});
verify_parsing(R"""(
root ::= "a"*
)""", {
{"root", 0},
{"root_1", 1},
}, {
// root (index 0)
{LLAMA_GRETYPE_RULE_REF, /* root_1 */ 1},
{LLAMA_GRETYPE_END, 0},
// root_1 (index 1)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_RULE_REF, /* root_1 */ 1},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
});
verify_parsing(R"""(
root ::= "a"{2}
)""", {
{"root", 0},
}, {
// root (index 0)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_END, 0},
});
verify_parsing(R"""(
root ::= "a"{2,}
)""", {
{"root", 0},
{"root_1", 1},
}, {
// root (index 0)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_RULE_REF, /* root_1 */ 1},
{LLAMA_GRETYPE_END, 0},
// root_1 (index 1)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_RULE_REF, /* root_1 */ 1},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
});
verify_parsing(R"""(
root ::= "a"{ 4}
)""", {
{"root", 0},
}, {
// root (index 0)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_END, 0},
});
verify_parsing(R"""(
root ::= "a"{2,4}
)""", {
{"root", 0},
{"root_1", 1},
{"root_2", 2},
}, {
// root (index 0)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_RULE_REF, /* root_2 */ 2},
{LLAMA_GRETYPE_END, 0},
// root_1 (index 1)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
// root_2 (index 2)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_RULE_REF, /* root_1 */ 1},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
});
verify_parsing(R"""(
root ::= (expr "=" term "\n")+
expr ::= term ([-+*/] term)*
term ::= [0-9]+
)""", {
{"expr", 2},
{"expr_5", 5},
{"expr_6", 6},
{"root", 0},
{"root_1", 1},
{"root_4", 4},
{"term", 3},
{"term_7", 7},
}, {
// root (index 0)
{LLAMA_GRETYPE_RULE_REF, /* root_1 */ 1},
{LLAMA_GRETYPE_RULE_REF, /* root_4 */ 4},
{LLAMA_GRETYPE_END, 0},
// root_1 (index 1)
{LLAMA_GRETYPE_RULE_REF, /* expr */ 2},
{LLAMA_GRETYPE_CHAR, '='},
{LLAMA_GRETYPE_RULE_REF, /* term */ 3},
{LLAMA_GRETYPE_CHAR, '\n'},
{LLAMA_GRETYPE_END, 0},
// expr (index 2)
{LLAMA_GRETYPE_RULE_REF, /* term */ 3},
{LLAMA_GRETYPE_RULE_REF, /* expr_6 */ 6},
{LLAMA_GRETYPE_END, 0},
// term (index 3)
{LLAMA_GRETYPE_CHAR, '0'},
{LLAMA_GRETYPE_CHAR_RNG_UPPER, '9'},
{LLAMA_GRETYPE_RULE_REF, /* term_7 */ 7},
{LLAMA_GRETYPE_END, 0},
// root_4 (index 4)
{LLAMA_GRETYPE_RULE_REF, /* root_1 */ 1},
{LLAMA_GRETYPE_RULE_REF, /* root_4 */ 4},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
// expr_5 (index 5)
{LLAMA_GRETYPE_CHAR, '-'},
{LLAMA_GRETYPE_CHAR_ALT, '+'},
{LLAMA_GRETYPE_CHAR_ALT, '*'},
{LLAMA_GRETYPE_CHAR_ALT, '/'},
{LLAMA_GRETYPE_RULE_REF, /* term */ 3},
{LLAMA_GRETYPE_END, 0},
// expr_6 (index 6)
{LLAMA_GRETYPE_RULE_REF, /* expr_5 */ 5},
{LLAMA_GRETYPE_RULE_REF, /* expr_6 */ 6},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
// term_7 (index 7)
{LLAMA_GRETYPE_CHAR, '0'},
{LLAMA_GRETYPE_CHAR_RNG_UPPER, '9'},
{LLAMA_GRETYPE_RULE_REF, /* term_7 */ 7},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
});
verify_parsing(R"""(
root ::= (expr "=" ws term "\n")+
expr ::= term ([-+*/] term)*
term ::= ident | num | "(" ws expr ")" ws
ident ::= [a-z] [a-z0-9_]* ws
num ::= [0-9]+ ws
ws ::= [ \t\n]*
)""", {
{"expr", 2},
{"expr_6", 6},
{"expr_7", 7},
@ -132,119 +428,88 @@ term ::= [0-9]+)""";
{"term", 4},
{"ws", 3},
{"ws_12", 12},
};
index = 0;
for (auto it = parsed_grammar.symbol_ids.begin(); it != parsed_grammar.symbol_ids.end(); ++it)
{
std::string key = it->first;
uint32_t value = it->second;
std::pair<std::string, uint32_t> expected_pair = expected[index];
// pretty print error message before asserting
if (expected_pair.first != key || expected_pair.second != value)
{
fprintf(stderr, "expected_pair: %s, %u\n", expected_pair.first.c_str(), expected_pair.second);
fprintf(stderr, "actual_pair: %s, %u\n", key.c_str(), value);
fprintf(stderr, "expected_pair != actual_pair\n");
}
assert(expected_pair.first == key && expected_pair.second == value);
index++;
}
expected_rules = {
{LLAMA_GRETYPE_RULE_REF, 5},
}, {
// root (index 0)
{LLAMA_GRETYPE_RULE_REF, /* root_1 */ 1},
{LLAMA_GRETYPE_RULE_REF, /* root_5 */ 5},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_RULE_REF, 2},
{LLAMA_GRETYPE_CHAR, 61},
{LLAMA_GRETYPE_RULE_REF, 3},
{LLAMA_GRETYPE_RULE_REF, 4},
{LLAMA_GRETYPE_CHAR, 10},
// root_1 (index 1)
{LLAMA_GRETYPE_RULE_REF, /* expr */ 2},
{LLAMA_GRETYPE_CHAR, '='},
{LLAMA_GRETYPE_RULE_REF, /* ws */ 3},
{LLAMA_GRETYPE_RULE_REF, /* term */ 4},
{LLAMA_GRETYPE_CHAR, '\n'},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_RULE_REF, 4},
{LLAMA_GRETYPE_RULE_REF, 7},
// expr (index 2)
{LLAMA_GRETYPE_RULE_REF, /* term */ 4},
{LLAMA_GRETYPE_RULE_REF, /* expr_7 */ 7},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_RULE_REF, 12},
// ws (index 3)
{LLAMA_GRETYPE_RULE_REF, /* ws_12 */ 12},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_RULE_REF, 8},
// term (index 4)
{LLAMA_GRETYPE_RULE_REF, /* ident */ 8},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_RULE_REF, 9},
{LLAMA_GRETYPE_RULE_REF, /* num */ 9},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_CHAR, 40},
{LLAMA_GRETYPE_RULE_REF, 3},
{LLAMA_GRETYPE_RULE_REF, 2},
{LLAMA_GRETYPE_CHAR, 41},
{LLAMA_GRETYPE_RULE_REF, 3},
{LLAMA_GRETYPE_CHAR, '('},
{LLAMA_GRETYPE_RULE_REF, /* ws */ 3},
{LLAMA_GRETYPE_RULE_REF, /* expr */ 2},
{LLAMA_GRETYPE_CHAR, ')'},
{LLAMA_GRETYPE_RULE_REF, /* ws */ 3},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_RULE_REF, 1},
{LLAMA_GRETYPE_RULE_REF, 5},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_RULE_REF, 1},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_CHAR, 45},
{LLAMA_GRETYPE_CHAR_ALT, 43},
{LLAMA_GRETYPE_CHAR_ALT, 42},
{LLAMA_GRETYPE_CHAR_ALT, 47},
{LLAMA_GRETYPE_RULE_REF, 4},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_RULE_REF, 6},
{LLAMA_GRETYPE_RULE_REF, 7},
// root_5 (index 5)
{LLAMA_GRETYPE_RULE_REF, /* root_1 */ 1},
{LLAMA_GRETYPE_RULE_REF, /* root_5 */ 5},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_CHAR, 97},
{LLAMA_GRETYPE_CHAR_RNG_UPPER, 122},
{LLAMA_GRETYPE_RULE_REF, 10},
{LLAMA_GRETYPE_RULE_REF, 3},
// expr_6 (index 6)
{LLAMA_GRETYPE_CHAR, '-'},
{LLAMA_GRETYPE_CHAR_ALT, '+'},
{LLAMA_GRETYPE_CHAR_ALT, '*'},
{LLAMA_GRETYPE_CHAR_ALT, '/'},
{LLAMA_GRETYPE_RULE_REF, /* term */ 4},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_RULE_REF, 11},
{LLAMA_GRETYPE_RULE_REF, 3},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_CHAR, 97},
{LLAMA_GRETYPE_CHAR_RNG_UPPER, 122},
{LLAMA_GRETYPE_CHAR_ALT, 48},
{LLAMA_GRETYPE_CHAR_RNG_UPPER, 57},
{LLAMA_GRETYPE_CHAR_ALT, 95},
{LLAMA_GRETYPE_RULE_REF, 10},
// expr_7 (index 7)
{LLAMA_GRETYPE_RULE_REF, /* expr_6 */ 6},
{LLAMA_GRETYPE_RULE_REF, /* expr_7 */ 7},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_CHAR, 48},
{LLAMA_GRETYPE_CHAR_RNG_UPPER, 57},
{LLAMA_GRETYPE_RULE_REF, 11},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_CHAR, 48},
{LLAMA_GRETYPE_CHAR_RNG_UPPER, 57},
// ident (index 8)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_CHAR_RNG_UPPER, 'z'},
{LLAMA_GRETYPE_RULE_REF, /* ident_10 */ 10},
{LLAMA_GRETYPE_RULE_REF, /* ws */ 3},
{LLAMA_GRETYPE_END, 0},
{LLAMA_GRETYPE_CHAR, 32},
{LLAMA_GRETYPE_CHAR_ALT, 9},
{LLAMA_GRETYPE_CHAR_ALT, 10},
{LLAMA_GRETYPE_RULE_REF, 12},
// num (index 9)
{LLAMA_GRETYPE_CHAR, '0'},
{LLAMA_GRETYPE_CHAR_RNG_UPPER, '9'},
{LLAMA_GRETYPE_RULE_REF, /* num_11 */ 11},
{LLAMA_GRETYPE_RULE_REF, /* ws */ 3},
{LLAMA_GRETYPE_END, 0},
// ident_10 (index 10)
{LLAMA_GRETYPE_CHAR, 'a'},
{LLAMA_GRETYPE_CHAR_RNG_UPPER, 'z'},
{LLAMA_GRETYPE_CHAR_ALT, '0'},
{LLAMA_GRETYPE_CHAR_RNG_UPPER, '9'},
{LLAMA_GRETYPE_CHAR_ALT, '_'},
{LLAMA_GRETYPE_RULE_REF, /* ident_10 */ 10},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
};
index = 0;
for (auto rule : parsed_grammar.rules)
{
// compare rule to expected rule
for (uint32_t i = 0; i < rule.size(); i++)
{
llama_grammar_element element = rule[i];
llama_grammar_element expected_element = expected_rules[index];
// pretty print error message before asserting
if (expected_element.type != element.type || expected_element.value != element.value)
{
fprintf(stderr, "index: %u\n", index);
fprintf(stderr, "expected_element: %d, %u\n", expected_element.type, expected_element.value);
fprintf(stderr, "actual_element: %d, %u\n", element.type, element.value);
fprintf(stderr, "expected_element != actual_element\n");
}
assert(expected_element.type == element.type && expected_element.value == element.value);
index++;
}
}
// num_11 (index 11)
{LLAMA_GRETYPE_CHAR, '0'},
{LLAMA_GRETYPE_CHAR_RNG_UPPER, '9'},
{LLAMA_GRETYPE_RULE_REF, /* num_11 */ 11},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
// ws_12 (index 12)
{LLAMA_GRETYPE_CHAR, ' '},
{LLAMA_GRETYPE_CHAR_ALT, '\t'},
{LLAMA_GRETYPE_CHAR_ALT, '\n'},
{LLAMA_GRETYPE_RULE_REF, /* ws_12 */ 12},
{LLAMA_GRETYPE_ALT, 0},
{LLAMA_GRETYPE_END, 0},
});
return 0;
}

112
tests/test-json-schema-to-grammar.cpp
View File

@ -105,9 +105,9 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
R"""(
array ::= "[" space ( value ("," space value)* )? "]" space
boolean ::= ("true" | "false") space
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
decimal-part ::= [0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
integral-part ::= [0-9] | [1-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
decimal-part ::= [0-9]{1,16}
integral-part ::= [0] | [1-9] [0-9]{0,15}
null ::= "null" space
number ::= ("-"? integral-part) ("." decimal-part)? ([eE] [-+]? integral-part)? space
object ::= "{" space ( string ":" space value ("," space string ":" space value)* )? "}" space
@ -130,18 +130,18 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
]
})""",
R"""(
date ::= [0-9] [0-9] [0-9] [0-9] "-" ( "0" [1-9] | "1" [0-2] ) "-" ( "0" [1-9] | [1-2] [0-9] | "3" [0-1] )
date ::= [0-9]{4} "-" ( "0" [1-9] | "1" [0-2] ) "-" ( "0" [1-9] | [1-2] [0-9] | "3" [0-1] )
date-string ::= "\"" date "\"" space
date-time ::= date "T" time
date-time-string ::= "\"" date-time "\"" space
root ::= "[" space tuple-0 "," space uuid "," space tuple-2 "," space tuple-3 "]" space
space ::= " "?
time ::= ([01] [0-9] | "2" [0-3]) ":" [0-5] [0-9] ":" [0-5] [0-9] ( "." [0-9] [0-9] [0-9] )? ( "Z" | ( "+" | "-" ) ( [01] [0-9] | "2" [0-3] ) ":" [0-5] [0-9] )
time ::= ([01] [0-9] | "2" [0-3]) ":" [0-5] [0-9] ":" [0-5] [0-9] ( "." [0-9]{3} )? ( "Z" | ( "+" | "-" ) ( [01] [0-9] | "2" [0-3] ) ":" [0-5] [0-9] )
time-string ::= "\"" time "\"" space
tuple-0 ::= date-string
tuple-2 ::= time-string
tuple-3 ::= date-time-string
uuid ::= "\"" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "-" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "-" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "-" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "-" [0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F][0-9a-fA-F] "\"" space
uuid ::= "\"" [0-9a-fA-F]{8} "-" [0-9a-fA-F]{4} "-" [0-9a-fA-F]{4} "-" [0-9a-fA-F]{4} "-" [0-9a-fA-F]{12} "\"" space
)"""
});
@ -152,7 +152,7 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
"type": "string"
})""",
R"""(
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
root ::= "\"" char* "\"" space
space ::= " "?
)"""
@ -166,7 +166,7 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
"minLength": 1
})""",
R"""(
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
root ::= "\"" char+ "\"" space
space ::= " "?
)"""
@ -180,8 +180,8 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
"minLength": 3
})""",
R"""(
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
root ::= "\"" char char char (char)* "\"" space
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
root ::= "\"" char{3,} "\"" space
space ::= " "?
)"""
});
@ -194,8 +194,8 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
"maxLength": 3
})""",
R"""(
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
root ::= "\"" (char (char (char)?)?)? "\"" space
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
root ::= "\"" char{0,3} "\"" space
space ::= " "?
)"""
});
@ -209,8 +209,8 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
"maxLength": 4
})""",
R"""(
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
root ::= "\"" char (char (char (char)?)?)? "\"" space
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
root ::= "\"" char{1,4} "\"" space
space ::= " "?
)"""
});
@ -234,7 +234,7 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
"type": "integer"
})""",
R"""(
integral-part ::= [0-9] | [1-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
integral-part ::= [0] | [1-9] [0-9]{0,15}
root ::= ("-"? integral-part) space
space ::= " "?
)"""
@ -283,7 +283,7 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
"prefixItems": [{ "type": "string" }]
})""",
R"""(
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
root ::= "[" space string "]" space
space ::= " "?
string ::= "\"" char* "\"" space
@ -297,9 +297,9 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
"prefixItems": [{ "type": "string" }, { "type": "number" }]
})""",
R"""(
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
decimal-part ::= [0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
integral-part ::= [0-9] | [1-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
decimal-part ::= [0-9]{1,16}
integral-part ::= [0] | [1-9] [0-9]{0,15}
number ::= ("-"? integral-part) ("." decimal-part)? ([eE] [-+]? integral-part)? space
root ::= "[" space string "," space number "]" space
space ::= " "?
@ -314,8 +314,8 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
"type": "number"
})""",
R"""(
decimal-part ::= [0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
integral-part ::= [0-9] | [1-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
decimal-part ::= [0-9]{1,16}
integral-part ::= [0] | [1-9] [0-9]{0,15}
root ::= ("-"? integral-part) ("." decimal-part)? ([eE] [-+]? integral-part)? space
space ::= " "?
)"""
@ -332,7 +332,7 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
})""",
R"""(
boolean ::= ("true" | "false") space
root ::= "[" space boolean "," space boolean ("," space boolean)* "]" space
root ::= "[" space boolean ("," space boolean)+ "]" space
space ::= " "?
)"""
});
@ -348,7 +348,7 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
})""",
R"""(
boolean ::= ("true" | "false") space
root ::= "[" space (boolean)? "]" space
root ::= "[" space boolean? "]" space
space ::= " "?
)"""
});
@ -380,12 +380,12 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
"maxItems": 5
})""",
R"""(
decimal-part ::= [0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
decimal-part ::= [0-9]{1,16}
integer ::= ("-"? integral-part) space
integral-part ::= [0-9] | [1-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
integral-part ::= [0] | [1-9] [0-9]{0,15}
item ::= number | integer
number ::= ("-"? integral-part) ("." decimal-part)? ([eE] [-+]? integral-part)? space
root ::= "[" space item "," space item "," space item ("," space item ("," space item)?)? "]" space
root ::= "[" space item ("," space item){2,4} "]" space
space ::= " "?
)"""
});
@ -438,7 +438,7 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
})""",
R"""(
dot ::= [^\x0A\x0D]
root ::= "\"" ("(" root-1 (root-1 (root-1)?)? ")")? root-1 root-1 root-1 "-" root-1 root-1 root-1 root-1 " " "aaa" ("a" ("a")?)? "nd" dot dot dot "\"" space
root ::= "\"" ("(" root-1{1,3} ")")? root-1{3,3} "-" root-1{4,4} " " "a"{3,5} "nd" dot dot dot "\"" space
root-1 ::= [0-9]
space ::= " "?
)"""
@ -466,7 +466,7 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
a-kv ::= "\"a\"" space ":" space string
b-kv ::= "\"b\"" space ":" space string
c-kv ::= "\"c\"" space ":" space string
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
root ::= "{" space b-kv "," space c-kv "," space a-kv "}" space
space ::= " "?
string ::= "\"" char* "\"" space
@ -486,7 +486,7 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
})""",
R"""(
a-kv ::= "\"a\"" space ":" space string
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
root ::= "{" space (a-kv )? "}" space
space ::= " "?
string ::= "\"" char* "\"" space
@ -510,7 +510,7 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
b-kv ::= "\"b\"" space ":" space string
b-rest ::= ( "," space c-kv )?
c-kv ::= "\"c\"" space ":" space string
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
root ::= "{" space (a-kv a-rest | b-kv b-rest | c-kv )? "}" space
space ::= " "?
string ::= "\"" char* "\"" space
@ -534,7 +534,7 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
a-kv ::= "\"a\"" space ":" space string
b-kv ::= "\"b\"" space ":" space string
c-kv ::= "\"c\"" space ":" space string
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
d-kv ::= "\"d\"" space ":" space string
d-rest ::= ( "," space c-kv )?
root ::= "{" space b-kv "," space a-kv ( "," space ( d-kv d-rest | c-kv ) )? "}" space
@ -554,9 +554,9 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
additional-kv ::= string ":" space additional-value
additional-kvs ::= additional-kv ( "," space additional-kv )*
additional-value ::= "[" space (number ("," space number)*)? "]" space
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
decimal-part ::= [0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
integral-part ::= [0-9] | [1-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
decimal-part ::= [0-9]{1,16}
integral-part ::= [0] | [1-9] [0-9]{0,15}
number ::= ("-"? integral-part) ("." decimal-part)? ([eE] [-+]? integral-part)? space
root ::= "{" space (additional-kvs )? "}" space
space ::= " "?
@ -574,9 +574,9 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
R"""(
array ::= "[" space ( value ("," space value)* )? "]" space
boolean ::= ("true" | "false") space
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
decimal-part ::= [0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
integral-part ::= [0-9] | [1-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
decimal-part ::= [0-9]{1,16}
integral-part ::= [0] | [1-9] [0-9]{0,15}
null ::= "null" space
number ::= ("-"? integral-part) ("." decimal-part)? ([eE] [-+]? integral-part)? space
object ::= "{" space ( string ":" space value ("," space string ":" space value)* )? "}" space
@ -596,9 +596,9 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
R"""(
array ::= "[" space ( value ("," space value)* )? "]" space
boolean ::= ("true" | "false") space
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
decimal-part ::= [0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
integral-part ::= [0-9] | [1-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
decimal-part ::= [0-9]{1,16}
integral-part ::= [0] | [1-9] [0-9]{0,15}
null ::= "null" space
number ::= ("-"? integral-part) ("." decimal-part)? ([eE] [-+]? integral-part)? space
object ::= "{" space ( string ":" space value ("," space string ":" space value)* )? "}" space
@ -637,9 +637,9 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
a-kv ::= "\"a\"" space ":" space number
additional-kv ::= string ":" space string
additional-kvs ::= additional-kv ( "," space additional-kv )*
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
decimal-part ::= [0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
integral-part ::= [0-9] | [1-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
decimal-part ::= [0-9]{1,16}
integral-part ::= [0] | [1-9] [0-9]{0,15}
number ::= ("-"? integral-part) ("." decimal-part)? ([eE] [-+]? integral-part)? space
root ::= "{" space a-kv ( "," space ( additional-kvs ) )? "}" space
space ::= " "?
@ -662,9 +662,9 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
a-rest ::= additional-kvs
additional-kv ::= string ":" space number
additional-kvs ::= additional-kv ( "," space additional-kv )*
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
decimal-part ::= [0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
integral-part ::= [0-9] | [1-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
decimal-part ::= [0-9]{1,16}
integral-part ::= [0] | [1-9] [0-9]{0,15}
number ::= ("-"? integral-part) ("." decimal-part)? ([eE] [-+]? integral-part)? space
root ::= "{" space (a-kv a-rest | additional-kvs )? "}" space
space ::= " "?
@ -690,9 +690,9 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
additional-kvs ::= additional-kv ( "," space additional-kv )*
b-kv ::= "\"b\"" space ":" space number
b-rest ::= additional-kvs
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
decimal-part ::= [0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
integral-part ::= [0-9] | [1-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
decimal-part ::= [0-9]{1,16}
integral-part ::= [0] | [1-9] [0-9]{0,15}
number ::= ("-"? integral-part) ("." decimal-part)? ([eE] [-+]? integral-part)? space
root ::= "{" space a-kv ( "," space ( b-kv b-rest | additional-kvs ) )? "}" space
space ::= " "?
@ -721,7 +721,7 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
}
})""",
R"""(
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F] [0-9a-fA-F])
char ::= [^"\\] | "\\" (["\\/bfnrt] | "u" [0-9a-fA-F]{4})
foo ::= "{" space foo-a-kv "}" space
foo-a-kv ::= "\"a\"" space ":" space string
root ::= foo
@ -753,10 +753,10 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
alternative-1 ::= bar
bar ::= "{" space (bar-b-kv )? "}" space
bar-b-kv ::= "\"b\"" space ":" space number
decimal-part ::= [0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
decimal-part ::= [0-9]{1,16}
foo ::= "{" space (foo-a-kv )? "}" space
foo-a-kv ::= "\"a\"" space ":" space number
integral-part ::= [0-9] | [1-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
integral-part ::= [0] | [1-9] [0-9]{0,15}
number ::= ("-"? integral-part) ("." decimal-part)? ([eE] [-+]? integral-part)? space
root ::= alternative-0 | alternative-1
space ::= " "?
@ -799,8 +799,8 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
c-kv ::= "\"c\"" space ":" space number
d-kv ::= "\"d\"" space ":" space number
d-rest ::= ( "," space c-kv )?
decimal-part ::= [0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
integral-part ::= [0-9] | [1-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
decimal-part ::= [0-9]{1,16}
integral-part ::= [0] | [1-9] [0-9]{0,15}
number ::= ("-"? integral-part) ("." decimal-part)? ([eE] [-+]? integral-part)? space
root ::= "{" space a-kv "," space b-kv ( "," space ( d-kv d-rest | c-kv ) )? "}" space
space ::= " "?
@ -842,8 +842,8 @@ static void test_all(const std::string & lang, std::function<void(const TestCase
"definitions": {}
})""",
R"""(
decimal-part ::= [0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
integral-part ::= [0-9] | [1-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9] ([0-9])?)?)?)?)?)?)?)?)?)?)?)?)?)?)?
decimal-part ::= [0-9]{1,16}
integral-part ::= [0] | [1-9] [0-9]{0,15}
number ::= ("-"? integral-part) ("." decimal-part)? ([eE] [-+]? integral-part)? space
number- ::= "{" space number-number-kv "}" space
number-kv ::= "\"number\"" space ":" space number-