Implement JSONX.JSONText (#394)

Author: JamesWrigley

vendor/README.md

@@ -11,6 +11,8 @@ A simple, no-dependency JSON parser that can be vendored (copied/pasted) into ot
 
 ### Writing
 - `JSONX.json(value)` - Convert a Julia value to JSON string
+- `JSONX.JSONText(str)` - `str` will be treated as raw JSON and inserted
+  directly into the output.
 
 ### Supported Types
 

vendor/jsonx.jl

@@ -263,6 +263,11 @@ function parse_number(str::String, pos::Int, len::Int)
 end
 
 # JSON writing functionality
+
+struct JSONText
+    text::String
+end
+
 function write_json(io::IO, value)
     if value === nothing || value === missing
         print(io, "null")
@@ -271,6 +276,8 @@ function write_json(io::IO, value)
     elseif value isa Number
         value isa Complex && throw(ArgumentError("Cannot serialize Complex numbers to JSON"))
         print(io, value)
+    elseif value isa JSONText
+        print(io, value.text)
     elseif value isa AbstractString
         write_string(io, value)
     elseif value isa AbstractVector || value isa AbstractSet || value isa Tuple

vendor/test.jl

@@ -109,6 +109,8 @@ include("jsonx.jl")
         @test JSONX.json((1, 2, 3)) == "[1,2,3]"
         # Note: NamedTuple order is not guaranteed, so we parse and compare
         @test JSONX.parse(JSONX.json((a=1, b=2))) == Dict("a" => 1.0, "b" => 2.0)
+        # Test JSONText
+        @test JSONX.json(JSONX.JSONText("{\"x\": invalid json}")) == "{\"x\": invalid json}"
     end
 
     @testset "AbstractSet Support" begin