From 63e0e787aaa3a2e7cc5ec955427c2004aa5b9810 Mon Sep 17 00:00:00 2001
From: Gnimuc <qiyupei@gmail.com>
Date: Wed, 14 Apr 2021 19:53:56 +0900
Subject: [PATCH] Support `function_argument_conflict_symbols`

---
 gen/generator.toml       | 5 +++++
 src/generator/codegen.jl | 4 ++++
 2 files changed, 9 insertions(+)

diff --git a/gen/generator.toml b/gen/generator.toml
index 2e4205e2..5caa063c 100644
--- a/gen/generator.toml
+++ b/gen/generator.toml
@@ -131,6 +131,10 @@ opaque_as_mutable_struct = true
 # generate getproperty/setproperty! methods for the types in the following list
 field_access_method_list = []
 
+# the generator will prefix the function argument names in the following list with a "_" to 
+# prevent the generated symbols from conflicting with the symbols defined and exported in Base.
+function_argument_conflict_symbols = ["Ptr"]
+
 [codegen.macro]
 # it‘s highly recommended to set this entry to "basic".
 # if you'd like to skip all of the macros, please set this entry to "disable".
@@ -145,6 +149,7 @@ add_comment_for_skipped_macro = true
 ignore_header_guards = true
 ignore_header_guards_with_suffixes = []
 
+
 [general.log]
 # CollectTopLevelNode_log = false
 # LinkTypedefToAnonymousTagType_log = false
diff --git a/src/generator/codegen.jl b/src/generator/codegen.jl
index 9a0964e5..6a8cc8fd 100644
--- a/src/generator/codegen.jl
+++ b/src/generator/codegen.jl
@@ -9,6 +9,8 @@ emit!(dag::ExprDAG, node::ExprNode, options::Dict; args...) = dag
 ############################### Function ###############################
 
 function emit!(dag::ExprDAG, node::ExprNode{FunctionProto}, options::Dict; args...)
+    conflict_syms = get(options, "function_argument_conflict_symbols", [])
+
     cursor = node.cursor
 
     library_name = options["library_name"]
@@ -37,6 +39,8 @@ function emit!(dag::ExprDAG, node::ExprNode{FunctionProto}, options::Dict; args.
         # handle name collisions
         if haskey(dag.tags, ns) || haskey(dag.ids, ns) || haskey(dag.ids_extra, ns)
             safe_name *= "_"
+        elseif safe_name ∈ conflict_syms
+            safe_name = "_" * safe_name
         end
         arg_names[i] = Symbol(safe_name)
     end