mirror of
https://github.com/nlohmann/json.git
synced 2026-10-06 14:40:32 +00:00
Niels Lohmann
4303ba674d
Add json_document and json_view, a read-only, zero-copy index of a JSON text, as the first public slice of the zero-copy view (#5295). A parse produces a flat array of 16-byte nodes in document order, one per value and one per object key. Strings stay in the source text; escaped strings are decoded into an arena. Integers are converted while their digits are in the cache; floats keep only their digit layout and are converted on read. Containers store the size of their subtree, so a reader can step over one in constant time. A document makes a handful of allocations, however many values it has. The parser accepts exactly what json::parse accepts, with every combination of ignore_comments and ignore_trailing_commas, with and without a trailing NUL, and under JSON_STRICT_NUL_HANDLING. It is portable C++11 and does not depend on byte order. basic_json_document adds parse, parse_copy, accept, read (reuses a document's memory), root, is_discarded, source, owns_source, node_count, memory_usage, and shrink_to_fit. basic_json_view adds type, the is_* queries, operator bool, size, empty, materialize, and source_offset. A parse error throws the same exception basic_json::parse would throw for the same input, message and position included. detail::abi_config keeps JSON_STRICT_NUL_HANDLING and JSON_USE_LEGACY_DISCARDED_VALUE_COMPARISON readable after json.hpp undefines them, in the ABI namespace so they always match the basic_json in use. A NUL byte that ends a // comment is the end of the input, as in parse() since #5696. Signed-off-by: Niels Lohmann <mail@nlohmann.me>
59 lines
1.4 KiB
CMake
59 lines
1.4 KiB
CMake
# generate Bazel BUILD file
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#
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# usage: cmake -P cmake/scripts/gen_bazel_build_file.cmake (or: make BUILD.bazel)
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#
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# The header list of the "json" target is derived from the files in include/. Everything else is fixed text below,
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# so edit this script rather than BUILD.bazel.
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get_filename_component(PROJECT_ROOT "${CMAKE_CURRENT_LIST_DIR}/../.." ABSOLUTE)
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set(BUILD_FILE "${PROJECT_ROOT}/BUILD.bazel")
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file(GLOB_RECURSE HEADERS LIST_DIRECTORIES false RELATIVE "${PROJECT_ROOT}" "${PROJECT_ROOT}/include/*.hpp")
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list(SORT HEADERS)
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set(CONTENT [=[
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load("@rules_cc//cc:cc_library.bzl", "cc_library")
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load("@rules_license//rules:license.bzl", "license")
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package(
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default_applicable_licenses = [":license"],
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)
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exports_files([
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"LICENSE.MIT",
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])
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license(
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name = "license",
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license_kinds = ["@rules_license//licenses/spdx:MIT"],
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license_text = "LICENSE.MIT",
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)
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cc_library(
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name = "json",
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hdrs = [
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]=])
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foreach(header ${HEADERS})
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string(APPEND CONTENT " \"${header}\",\n")
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endforeach()
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string(APPEND CONTENT [=[
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],
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includes = ["include"],
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visibility = ["//visibility:public"],
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)
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cc_library(
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name = "singleheader-json",
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hdrs = [
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"single_include/nlohmann/json.hpp",
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"single_include/nlohmann/json_view.hpp",
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],
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includes = ["single_include"],
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visibility = ["//visibility:public"],
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)
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]=])
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file(WRITE "${BUILD_FILE}" "${CONTENT}")
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