From 49544692598812a8306b8f9b4b437eac32ca804e Mon Sep 17 00:00:00 2001
From: ringabout <43030857+ringabout@users.noreply.github.com>
Date: Sun, 11 Aug 2024 16:13:16 +0800
Subject: [PATCH] fixes #23914; jsondoc broken in devel (#23916)

follows up https://github.com/nim-lang/Nim/pull/23064

fixes #23914
---
 compiler/docgen.nim     | 2 +-
 tests/misc/mjsondoc.nim | 3 +++
 tests/misc/trunner.nim  | 6 ++++--
 3 files changed, 8 insertions(+), 3 deletions(-)

diff --git a/compiler/docgen.nim b/compiler/docgen.nim
index b4c4baa2b673..a6795be44752 100644
--- a/compiler/docgen.nim
+++ b/compiler/docgen.nim
@@ -1206,7 +1206,7 @@ proc genJsonItem(d: PDoc, n, nameNode: PNode, k: TSymKind, nonExports = false):
         var param = %{"name": %($genericParam)}
         if genericParam.sym.typ.len > 0:
           param["types"] = newJArray()
-        param["types"].add %($genericParam.sym.typ.elementType)
+          param["types"] = %($genericParam.sym.typ.elementType)
         result.json["signature"]["genericParams"].add param
   if optGenIndex in d.conf.globalOptions:
     genItem(d, n, nameNode, k, kForceExport)
diff --git a/tests/misc/mjsondoc.nim b/tests/misc/mjsondoc.nim
index e4642f0b490a..016c8522d3c6 100644
--- a/tests/misc/mjsondoc.nim
+++ b/tests/misc/mjsondoc.nim
@@ -9,3 +9,6 @@ const
 type
   MyEnum* = enum
     foo, bar
+
+proc foo2*[T: int, M: string, U](x: T, y: U, z: M) =
+  echo 1
diff --git a/tests/misc/trunner.nim b/tests/misc/trunner.nim
index f0262f5280ed..6e5487d1b76a 100644
--- a/tests/misc/trunner.nim
+++ b/tests/misc/trunner.nim
@@ -224,13 +224,15 @@ sub/mmain.idx""", context
     doAssert exitCode == 0, msg
 
     let data = parseJson(readFile(output))["entries"]
-    doAssert data.len == 4
+    doAssert data.len == 5
     let doSomething = data[0]
     doAssert doSomething["name"].getStr == "doSomething"
     doAssert doSomething["type"].getStr == "skProc"
     doAssert doSomething["line"].getInt == 1
     doAssert doSomething["col"].getInt == 0
     doAssert doSomething["code"].getStr == "proc doSomething(x, y: int): int {.raises: [], tags: [], forbids: [].}"
+    let foo2 = data[4]
+    doAssert $foo2["signature"] == """{"arguments":[{"name":"x","type":"T"},{"name":"y","type":"U"},{"name":"z","type":"M"}],"genericParams":[{"name":"T","types":"int"},{"name":"M","types":"string"},{"name":"U"}]}"""
 
   block: # nim jsondoc # bug #11953
     let file = testsDir / "misc/mjsondoc.nim"
@@ -241,7 +243,7 @@ sub/mmain.idx""", context
     doAssert exitCode == 0, msg
 
     let data = parseJson(readFile(destDir / "mjsondoc.json"))["entries"]
-    doAssert data.len == 4
+    doAssert data.len == 5
     let doSomething = data[0]
     doAssert doSomething["name"].getStr == "doSomething"
     doAssert doSomething["type"].getStr == "skProc"