mirror of
https://github.com/simdjson/simdjson
synced 2026-06-08 17:27:07 +00:00
John Keiser
8e7d1a5f09
This creates a "document" class with only user-facing document state (no parser internals). - document: user-facing document state - document::iterator: iterator (equivalent of ParsedJsonIterator) - document::parser: parser state plus a "docked" document we parse into (equivalent of ParsedJson) Usage: ```c++ auto doc = simdjson::document::parse(buf, len); // less efficient but simplest ``` ```c++ simdjson::document::parser parser; // reusable parser parser.allocate_capacity(len); simdjson::document* doc = parser.parse(buf, len); // pointer to doc inside parser doc = parser.parse(buf2, len); // reuses all buffers and overwrites doc; more efficient ```
71 lines
2.3 KiB
C++
71 lines
2.3 KiB
C++
#ifndef SIMDJSON_SIMDJSON_H
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#define SIMDJSON_SIMDJSON_H
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#ifndef __cplusplus
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#error simdjson requires a C++ compiler
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#endif
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#ifndef SIMDJSON_CPLUSPLUS
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#if defined(_MSVC_LANG) && !defined(__clang__)
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#define SIMDJSON_CPLUSPLUS (_MSC_VER == 1900 ? 201103L : _MSVC_LANG)
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#else
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#define SIMDJSON_CPLUSPLUS __cplusplus
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#endif
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#endif
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#if (SIMDJSON_CPLUSPLUS < 201703L)
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#error simdjson requires a compiler compliant with the C++17 standard
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#endif
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#include <string>
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namespace simdjson {
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// Represents the minimal architecture that would support an implementation
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enum class Architecture {
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UNSUPPORTED,
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WESTMERE,
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HASWELL,
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ARM64,
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// TODO remove 'native' in favor of runtime dispatch?
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// the 'native' enum class value should point at a good default on the current
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// machine
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#ifdef IS_X86_64
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NATIVE = WESTMERE
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#elif defined(IS_ARM64)
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NATIVE = ARM64
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#endif
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};
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Architecture find_best_supported_architecture();
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Architecture parse_architecture(char *architecture);
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enum ErrorValues {
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SUCCESS = 0,
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SUCCESS_AND_HAS_MORE, //No errors and buffer still has more data
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CAPACITY, // This parser can't support a document that big
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MEMALLOC, // Error allocating memory, most likely out of memory
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TAPE_ERROR, // Something went wrong while writing to the tape (stage 2), this
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// is a generic error
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DEPTH_ERROR, // Your document exceeds the user-specified depth limitation
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STRING_ERROR, // Problem while parsing a string
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T_ATOM_ERROR, // Problem while parsing an atom starting with the letter 't'
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F_ATOM_ERROR, // Problem while parsing an atom starting with the letter 'f'
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N_ATOM_ERROR, // Problem while parsing an atom starting with the letter 'n'
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NUMBER_ERROR, // Problem while parsing a number
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UTF8_ERROR, // the input is not valid UTF-8
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UNINITIALIZED, // unknown error, or uninitialized document
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EMPTY, // no structural element found
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UNESCAPED_CHARS, // found unescaped characters in a string.
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UNCLOSED_STRING, // missing quote at the end
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UNEXPECTED_ERROR // indicative of a bug in simdjson
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};
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const std::string &error_message(const int);
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struct invalid_json : public std::exception {
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invalid_json(ErrorValues _error_code) : error_code{_error_code} {}
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const char *what() const noexcept { return error_message(error_code).c_str(); }
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ErrorValues error_code;
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};
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} // namespace simdjson
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#endif // SIMDJSON_H
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