Autoparser - complete refactoring of parser architecture (#18675)

* Autoparser - full single commit squish

* Final pre-merge changes: minor fixes, Kimi 2.5 model parser

common/peg-parser.h

@@ -4,6 +4,7 @@
 
 #include <memory>
 #include <unordered_map>
+#include <unordered_set>
 #include <string>
 #include <string_view>
 #include <functional>
@@ -111,6 +112,8 @@ class common_peg_ast_arena {
 
     void visit(common_peg_ast_id id, const common_peg_ast_visitor & visitor) const;
     void visit(const common_peg_parse_result & result, const common_peg_ast_visitor & visitor) const;
+
+    std::string dump();
 };
 
 struct common_peg_parse_result {
@@ -139,6 +142,7 @@ struct common_peg_parse_result {
 struct common_peg_parse_context {
     std::string input;
     bool is_partial;
+    bool debug = false;  // Enable debug output for parser tracing
     common_peg_ast_arena ast;
 
     int parse_depth;
@@ -207,6 +211,7 @@ struct common_peg_chars_parser {
 };
 
 struct common_peg_json_string_parser {};
+struct common_peg_python_dict_string_parser {};
 
 struct common_peg_until_parser {
     std::vector<std::string> delimiters;
@@ -255,6 +260,7 @@ using common_peg_parser_variant = std::variant<
     common_peg_space_parser,
     common_peg_chars_parser,
     common_peg_json_string_parser,
+    common_peg_python_dict_string_parser,
     common_peg_until_parser,
     common_peg_schema_parser,
     common_peg_rule_parser,
@@ -299,6 +305,8 @@ class common_peg_arena {
     friend class common_peg_parser_builder;
 
   private:
+    std::string dump_impl(common_peg_parser_id id, std::unordered_set<common_peg_parser_id> & visited) const;
+
     common_peg_parser_id add_parser(common_peg_parser_variant parser);
     void add_rule(const std::string & name, common_peg_parser_id id);
 
@@ -311,6 +319,10 @@ class common_peg_parser_builder {
     common_peg_parser wrap(common_peg_parser_id id) { return common_peg_parser(id, *this); }
     common_peg_parser add(const common_peg_parser_variant & p) { return wrap(arena_.add_parser(p)); }
 
+    // Generic helpers for building object/array structures with configurable string/value parsers.
+    common_peg_parser generic_object(const std::string & name, const common_peg_parser & string_parser, const common_peg_parser & value_parser);
+    common_peg_parser generic_array(const std::string & name, const common_peg_parser & value_parser);
+
   public:
     common_peg_parser_builder();
 
@@ -404,6 +416,21 @@ class common_peg_parser_builder {
     //   S -> A{n}
     common_peg_parser repeat(const common_peg_parser & p, int n) { return repeat(p, n, n); }
 
+    // Matches a double-quoted string: '"' content '"' space
+    common_peg_parser double_quoted_string();
+
+    // Matches a single-quoted string: "'" content "'" space
+    common_peg_parser single_quoted_string();
+
+    // Matches a string that accepts both double-quoted and single-quoted styles.
+    common_peg_parser flexible_string();
+
+    // Matches double-quoted string content without the surrounding quotes.
+    common_peg_parser json_string_content();
+
+    // Matches single-quoted string content without the surrounding quotes.
+    common_peg_parser single_quoted_string_content();
+
     // Creates a complete JSON parser supporting objects, arrays, strings, numbers, booleans, and null.
     //   value -> object | array | string | number | true | false | null
     common_peg_parser json();
@@ -414,14 +441,24 @@ class common_peg_parser_builder {
     common_peg_parser json_bool();
     common_peg_parser json_null();
 
-    // Matches JSON string content without the surrounding quotes.
-    // Useful for extracting content within a JSON string.
-    common_peg_parser json_string_content();
-
     // Matches a JSON object member with a key and associated parser as the
     // value.
     common_peg_parser json_member(const std::string & key, const common_peg_parser & p);
 
+    // Creates a complete Python format parser supporting dicts, arrays, strings, numbers, booleans, and None.
+    // Differs from JSON: uses True/False/None, accepts both single and double-quoted strings.
+    //   value -> dict | array | string | number | True | False | None
+    common_peg_parser python_value();
+    common_peg_parser python_dict();
+    common_peg_parser python_string();
+    common_peg_parser python_array();
+    common_peg_parser python_number();
+    common_peg_parser python_bool();
+    common_peg_parser python_null();
+
+    // A marker, i.e. text delimited by a pair of <> or []
+    common_peg_parser marker();
+
     // Wraps a parser with JSON schema metadata for grammar generation.
     // Used internally to convert JSON schemas to GBNF grammar rules.
     common_peg_parser schema(const common_peg_parser & p, const std::string & name, const nlohmann::ordered_json & schema, bool raw = false);