[Internal, New Feature, No Breaking] Rewrite constructor part 1 #173
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Define constructors for each schema. However, it is not completed. So this is the part 1. Because the two tags: `!!merge` and `!!value` remain in the construction of mapping. I added a bit modification in the constructor of `ConstructorError` to increase the readability. And also I added some TODO comments and my thoughts.
Paalon
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| Constructor(::Nothing) = Constructor(Dict{String,Function}()) | ||
| SafeConstructor(constructors::Dict = Dict(), multi_constructors::Dict = Dict()) = Constructor(merge(copy(default_yaml_constructors), constructors), multi_constructors) | ||
| # Paalon: I don't know what is safe. |
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I believe unsafe refers to things like this that you can do in pyyaml:
$ python
Python 3.10.12 (main, Nov 20 2023, 15:14:05) [GCC 11.4.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> import yaml
>>> yaml.load("""!!python/object/apply:subprocess.Popen\n- [echo, hello]\n""", Loader=yaml.Loader)
<Popen: returncode: None args: ['echo', 'hello']>
>>> hello
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Abstract
Detail
Rewrite construct functions in
src/constructor.jl. Add constructor functions for the three essential YAML schemata. However this is not completed because processing for tag!!mergeand!!valueare still tightly connected toconstruct_mappingetc.ConstructorError.flatten_mappingto always returnnothing.src/constructor.jltosrc/constructor_yaml_jl_0_4_10.jlfor the YAML.jl 0.4.10 schema:construct_yaml_null→construct_yaml_jl_0_4_10_schema_nullbool_values→yaml_jl_0_4_10_schema_bool_valuesconstruct_yaml_bool→construct_yaml_jl_0_4_10_schema_boolconstruct_yaml_int→construct_yaml_jl_0_4_10_schema_intconstruct_yaml_float→construct_yaml_jl_0_4_10_schema_floattimestamp_pat→yaml_jl_0_4_10_schema_timestamp_regexconstruct_yaml_timestamp→construct_yaml_jl_0_4_10_schema_timestampconstruct_yaml_omap→construct_yaml_jl_0_4_10_schema_timestampconstruct_yaml_pairs→construct_yaml_jl_0_4_10_schema_timestampconstruct_yaml_set→construct_yaml_jl_0_4_10_schema_setconstruct_yaml_str→construct_yaml_jl_0_4_10_schema_strconstruct_yaml_seq→construct_yaml_jl_0_4_10_schema_seqconstruct_yaml_map→construct_yaml_jl_0_4_10_schema_mapconstruct_yaml_object→construct_yaml_jl_0_4_10_schema_objectconstruct_yaml_binary→construct_yaml_jl_0_4_10_schema_binaryconstruct_undefined→construct_undefined_yaml_jl_0_4_10_schema: this requires test's modification.default_yaml_constructors→yaml_jl_0_4_10_schema_constructors: this requires test's modification.src/constructor_failsafe.jl,src/constructor_json.jlandsrc/constructor_core.jl.This PR does not change any commonly used API (
load,load_all,write, etc.).