feat(wheel_parser): add emit_error function for parse error handling

Author: Reim-developer

wheel_parser/include/wheel_parser/functions/emit_error.hxx

@@ -0,0 +1,50 @@
+#if !defined(PARSER_EMIT_ERROR_HXX)
+#define PARSER_EMIT_ERROR_HXX
+
+#include "wheel_parser/config.hxx"
+#include "wheel_parser/ast/nodes.hxx"
+#include "wheel_parser/error.hxx"
+#include "wheel_parser/declaration.hxx"
+#include "wheel_parser/parser_utils.hxx"
+#include <wheel_lexer/token.hxx>
+#include <wheel_lexer/kind.hxx>
+#include <wheel_lexer/source_map.hxx>
+#include <wheel_memory/allocator.hxx>
+
+using wheel_parser::ast::StatementNode;
+using wheel_parser::ast::ErrorStatement;
+using wheel_parser::ParseErrorCode;
+using wheel_lexer::Token;
+using wheel_lexer::TokenKind;
+using wheel_lexer::SourceLocation;
+using wheel_memory::Arena;
+
+WHEEL_PARSER_FUNCTIONS_BEGIN_NAMESPACE
+    struct EmitErrorConfig {
+        ParseErrorCode code;
+        ParserErrorList &error_list;
+        const Token *token;
+        TokenKind actual;
+        SourceLocation source_location;
+        Arena &arena;
+        Token &current_token;
+        Lexer &lexer;
+    };
+
+    inline StatementNode *emit_error(EmitErrorConfig config) noexcept {
+        const auto *token = copy_token(config.arena, config.current_token);
+        const auto error = make_parse_error(
+            config.code,
+            token,
+            token->kind,
+            config.lexer.get_source_location(*token)
+        );
+        config.error_list.push_back(error);
+
+        return config.arena.allocate<ErrorStatement>(token);
+    }
+
+
+WHEEL_PARSER_FUNCTIONS_END_NAMESPACE
+
+#endif