From e02f2f6fac64d403ecb4b69236d3f5e1feb7e3df Mon Sep 17 00:00:00 2001
From: Arik Sosman <git@arik.io>
Date: Thu, 14 Jan 2021 03:10:01 -0800
Subject: [PATCH] initiate language-dependent type mappings from C

---
 genbindings.py        | 11 +++++++++--
 java_strings.py       |  5 +++++
 typescript_strings.py | 23 +++++++++++++++++++++++
 3 files changed, 37 insertions(+), 2 deletions(-)

diff --git a/genbindings.py b/genbindings.py
index ecdb6bd7..4b242aab 100755
--- a/genbindings.py
+++ b/genbindings.py
@@ -170,6 +170,8 @@ def java_c_types(fn_arg, ret_arr_len):
 
     is_primitive = False
     arr_len = None
+    mapped_type = []
+    java_type_plural = None
     if fn_arg.startswith("void"):
         java_ty = "void"
         c_ty = "void"
@@ -183,7 +185,8 @@ def java_c_types(fn_arg, ret_arr_len):
         fn_arg = fn_arg[4:].strip()
         is_primitive = True
     elif fn_arg.startswith("uint8_t"):
-        java_ty = "byte"
+        mapped_type = consts.c_type_map['byte']
+        java_ty = mapped_type[0]
         c_ty = "int8_t"
         fn_ty_arg = "B"
         fn_arg = fn_arg[7:].strip()
@@ -295,7 +298,11 @@ def java_c_types(fn_arg, ret_arr_len):
     if var_is_arr is not None or ret_arr_len is not None:
         assert(not take_by_ptr)
         assert(not is_ptr)
-        java_ty = java_ty + "[]"
+        # is there a special case for plurals?
+        if len(mapped_type) == 2:
+            java_ty = mapped_type[1]
+        else:
+            java_ty = java_ty + "[]"
         c_ty = c_ty + "Array"
         if var_is_arr is not None:
             if var_is_arr.group(1) == "":
diff --git a/java_strings.py b/java_strings.py
index b66157eb..0a479de3 100644
--- a/java_strings.py
+++ b/java_strings.py
@@ -2,6 +2,11 @@ from bindingstypes import *
 
 class Consts:
     def __init__(self, DEBUG):
+
+        self.c_type_map = dict(
+            byte = ['byte'],
+        )
+
         self.common_base = """package org.ldk.structs;
 import java.util.LinkedList;
 class CommonBase {
diff --git a/typescript_strings.py b/typescript_strings.py
index 3c44daea..35331d89 100644
--- a/typescript_strings.py
+++ b/typescript_strings.py
@@ -8,6 +8,11 @@ def first_to_lower(string: str) -> str:
 
 class Consts:
     def __init__(self, DEBUG):
+
+        self.c_type_map = dict(
+            byte = ['number', 'Uint8Array'],
+        )
+
         self.common_base = """
             export default class CommonBase {
                 ptr: number;
@@ -274,6 +279,18 @@ import * as bindings from '../bindings' // TODO: figure out location
                 super_instantiator += ", " + first_to_lower(var[1])
                 pointer_to_adder += "this.ptrs_to.push(" + first_to_lower(var[1]) + ");\n"
 
+        # BUILD INTERFACE METHODS
+        out_java_interface = ""
+        for fn_line in field_function_lines:
+            if fn_line.fn_name != "free" and fn_line.fn_name != "clone":
+                out_java_interface += fn_line.fn_name + "("
+
+                for idx, arg_conv_info in enumerate(fn_line.args_ty):
+                    if idx >= 1:
+                        out_java_interface += ", "
+                    out_java_interface += f"{arg_conv_info.arg_name}: {arg_conv_info.java_hu_ty}"
+                out_java_interface += f"): {fn_line.ret_ty_info.java_hu_ty};\n\t\t\t\t"
+
         out_java_trait = f"""
             {self.hu_struct_file_prefix}
             
@@ -301,6 +318,10 @@ import * as bindings from '../bindings' // TODO: figure out location
                 }}
                 
             }}
+            
+            export interface {struct_name.replace("LDK", "")}Interface {{
+                {out_java_interface}
+            }}
         """
 
 
@@ -382,6 +403,8 @@ import * as bindings from '../bindings' // TODO: figure out location
         out_java_trait = out_java_trait + "\t}\n"
         out_java_trait = out_java_trait + java_trait_constr + ");\n\t\treturn impl_holder.held;\n\t}\n"
 
+        print(java_trait_constr)
+
         out_java = out_java + "\t}\n"
 
         out_java = out_java + "\tpublic static native long " + struct_name + "_new(" + struct_name + " impl"
-- 
2.30.2