From 4856272072978d877edbb899b2739ffc998facf4 Mon Sep 17 00:00:00 2001
From: Zahra <44895138+Naunet@users.noreply.github.com>
Date: Thu, 17 Oct 2024 00:38:24 +0200
Subject: [PATCH] handle lots of fields (#284)

---
 src/structs.jl   | 10 ++--------
 test/runtests.jl |  2 ++
 2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/src/structs.jl b/src/structs.jl
index 3062894..2ae6f3b 100644
--- a/src/structs.jl
+++ b/src/structs.jl
@@ -550,22 +550,16 @@ mutable struct StructClosure{T, KW}
     kw::KW
 end
 
-const DEFAULT_STRUCT_FIELD_COUNT = 32
-
 @inline function (f::StructClosure)(i, nm, TT; kw...)
     kw2 = merge(values(kw), f.kw)
     pos_i, y_i = read(StructType(TT), f.buf, f.pos, f.len, f.b, TT; kw2...)
     f.pos = pos_i
-    if i <= DEFAULT_STRUCT_FIELD_COUNT
-        f.values[i] = y_i
-    else
-        push!(f.values, y_i)
-    end
+    f.values[i] = y_i
     return
 end
 
 function read(::Struct, buf, pos, len, b, ::Type{T}; kw...) where {T}
-    values = Vector{Any}(undef, DEFAULT_STRUCT_FIELD_COUNT)
+    values = Vector{Any}(undef, fieldcount(T))
     if b != UInt8('{')
         error = ExpectedOpeningObjectChar
         @goto invalid
diff --git a/test/runtests.jl b/test/runtests.jl
index 8f7b0b1..a036012 100644
--- a/test/runtests.jl
+++ b/test/runtests.jl
@@ -796,6 +796,8 @@ lotsoffields = LotsOfFields(fill("hey", 35)...)
 jlots = JSON3.write(lotsoffields)
 @test jlots == "{\"x1\":\"hey\",\"x2\":\"hey\",\"x3\":\"hey\",\"x4\":\"hey\",\"x5\":\"hey\",\"x6\":\"hey\",\"x7\":\"hey\",\"x8\":\"hey\",\"x9\":\"hey\",\"x10\":\"hey\",\"x11\":\"hey\",\"x12\":\"hey\",\"x13\":\"hey\",\"x14\":\"hey\",\"x15\":\"hey\",\"x16\":\"hey\",\"x17\":\"hey\",\"x18\":\"hey\",\"x19\":\"hey\",\"x20\":\"hey\",\"x21\":\"hey\",\"x22\":\"hey\",\"x23\":\"hey\",\"x24\":\"hey\",\"x25\":\"hey\",\"x26\":\"hey\",\"x27\":\"hey\",\"x28\":\"hey\",\"x29\":\"hey\",\"x30\":\"hey\",\"x31\":\"hey\",\"x32\":\"hey\",\"x33\":\"hey\",\"x34\":\"hey\",\"x35\":\"hey\"}"
 @test JSON3.read(jlots, LotsOfFields) == lotsoffields
+jlots = "{\"x1\":\"1\",\"x11\":\"11\",\"x2\":\"2\",\"x12\":\"12\",\"x3\":\"3\",\"x13\":\"13\",\"x4\":\"4\",\"x14\":\"14\",\"x5\":\"5\",\"x15\":\"15\",\"x6\":\"6\",\"x16\":\"16\",\"x7\":\"7\",\"x17\":\"17\",\"x8\":\"8\",\"x18\":\"18\",\"x9\":\"9\",\"x19\":\"19\",\"x10\":\"10\",\"x20\":\"20\",\"x26\":\"26\",\"x27\":\"27\",\"x28\":\"28\",\"x29\":\"29\",\"x30\":\"30\",\"x21\":\"21\",\"x22\":\"22\",\"x23\":\"23\",\"x24\":\"24\",\"x25\":\"25\",\"x35\":\"35\",\"x34\":\"34\",\"x33\":\"33\",\"x32\":\"32\",\"x31\":\"31\"}"
+@test JSON3.read(jlots, LotsOfFields) == LotsOfFields(string.(collect(1:35))...)
 
 StructTypes.StructType(::Type{Wrapper}) = StructTypes.CustomStruct()
 StructTypes.lower(x::Wrapper) = x.x