#!/usr/bin/env python3
import sys, re
-if len(sys.argv) != 3:
- print("USAGE: /path/to/lightning.h /path/to/bindings.java")
+if len(sys.argv) != 4:
+ print("USAGE: /path/to/lightning.h /path/to/bindings/output.java /path/to/bindings/output.c")
sys.exit(1)
-with open(sys.argv[1]) as f, open(sys.argv[2], "w") as out_f:
- var_is_arr_regex = re.compile("\(\*([A-za-z_]*)\)\[[0-9]*\]");
- def map_type(fn_arg, print_void):
+with open(sys.argv[1]) as in_h, open(sys.argv[2], "w") as out_java, open(sys.argv[3], "w") as out_c:
+ var_is_arr_regex = re.compile("\(\*([A-za-z_]*)\)\[([0-9]*)\]")
+ var_ty_regex = re.compile("([A-za-z_0-9]*)(.*)")
+ def map_type(fn_arg, print_void, ret_arr_len):
fn_arg = fn_arg.strip()
if fn_arg.startswith("MUST_USE_RES "):
fn_arg = fn_arg[13:]
if fn_arg.startswith("const "):
fn_arg = fn_arg[6:]
+
+ c_ty = None
+ is_ptr_to_obj = None
if fn_arg.startswith("void"):
if print_void:
- out_f.write("void")
+ out_java.write("void")
+ c_ty = "void"
else:
- return
+ return (None, None, None)
fn_arg = fn_arg.strip("void ")
elif fn_arg.startswith("bool"):
- out_f.write("boolean")
+ out_java.write("boolean")
+ c_ty = "jboolean"
fn_arg = fn_arg.strip("bool ")
elif fn_arg.startswith("uint8_t"):
- out_f.write("byte")
+ out_java.write("byte")
+ c_ty = "jbyte"
fn_arg = fn_arg.strip("uint8_t ")
elif fn_arg.startswith("uint32_t"):
- out_f.write("int")
+ out_java.write("int")
+ c_ty = "jint"
fn_arg = fn_arg.strip("uint32_t ")
elif fn_arg.startswith("uint64_t"):
- out_f.write("long")
+ out_java.write("long")
+ c_ty = "jlong"
fn_arg = fn_arg.strip("uint64_t ")
else:
- out_f.write("long")
- fn_arg = "".join([e + " " for e in fn_arg.split(" ")[1:]]).strip()
+ ma = var_ty_regex.match(fn_arg)
+ out_java.write("long")
+ out_c.write("jlong")
+ is_ptr_to_obj = ma.group(1)
+ fn_arg = ma.group(2)
+ if c_ty is not None:
+ out_c.write(c_ty)
+
var_is_arr = var_is_arr_regex.match(fn_arg)
- if var_is_arr is not None:
- out_f.write("[] " + var_is_arr.group(1))
- elif fn_arg.strip() != "":
- out_f.write(" " + fn_arg.replace('*', '').strip())
+ no_ptr = fn_arg.replace('*', '')
+ if var_is_arr is not None or ret_arr_len is not None:
+ out_java.write("[] ")
+ out_c.write("Array ")
+ if var_is_arr is not None:
+ arr_name = var_is_arr.group(1)
+ arr_len = var_is_arr.group(2)
+ out_java.write(arr_name)
+ out_c.write(arr_name)
+ else:
+ arr_name = "ret"
+ arr_len = ret_arr_len
+ assert(c_ty == "jbyte")
+ return ("unsigned char " + arr_name + "_arr[" + arr_len + "];\n" +
+ "(*_env)->GetByteArrayRegion (_env, """ + arr_name + ", 0, " + arr_len + ", " + arr_name + "_arr);\n" +
+ "unsigned char (*""" + arr_name + "_ref)[" + arr_len + "] = &" + arr_name + "_arr;",
+ (c_ty + "Array " + arr_name + "_arr = (*_env)->NewByteArray(_env, 0); // XXX: len 0\n" +
+ "(*_env)->SetByteArrayRegion(_env, " + arr_name + "_arr, 0, " + arr_len + ", *",
+ ");\nreturn ret_arr;"),
+ arr_name + "_ref")
+ elif no_ptr.strip() != "":
+ # If we have a parameter name, print it (noting that it may indicate its a pointer)
+ out_java.write(" " + no_ptr.strip())
+ out_c.write(" " + no_ptr.strip())
+ if is_ptr_to_obj is not None:
+ if no_ptr == fn_arg:
+ return (is_ptr_to_obj + " " + no_ptr.strip() + "_conv = *(" + is_ptr_to_obj + "*)" + no_ptr.strip() + ";",
+ "XXX2", no_ptr.strip() + "_conv")
+ else:
+ return (is_ptr_to_obj + "* " + no_ptr.strip() + "_conv = (" + is_ptr_to_obj + "*)" + no_ptr.strip() + ";",
+ "XXX2", no_ptr.strip() + "_conv")
+ elif no_ptr != fn_arg:
+ return ("YYY1", "XXX3", no_ptr.strip())
+ else:
+ return (None, "XXX4", no_ptr.strip())
elif not print_void:
- out_f.write(" arg");
+ # We don't have a parameter name, and want one, just call it arg
+ out_java.write(" arg")
+ out_c.write(" arg")
+ if is_ptr_to_obj is not None:
+ return (is_ptr_to_obj + " arg_conv = *(" + is_ptr_to_obj + "*)arg;", "XXX2", "arg_conv")
+ else:
+ return (None, "XXX6", "arg")
+ else:
+ # We don't have a parameter name, and don't want one (cause we're returning)
+ if is_ptr_to_obj is not None:
+ if no_ptr == fn_arg:
+ return (None, (is_ptr_to_obj + "* ret = malloc(sizeof(" + is_ptr_to_obj + "));\n*ret = ", ";\nreturn (long)ret;"), None)
+ else:
+ return (None, ("return (long) ", ";"), None)
+ else:
+ return (None, None, None)
- def map_fn_args(fn_args):
+ def map_fn_args(fn_args, f):
for idx, arg in enumerate(fn_args.split(',')):
if idx != 0:
- out_f.write(", ")
+ out_java.write(", ")
+ if arg != "void":
+ out_c.write(", ")
map_type(arg, False)
- def map_fn(re_match, ret_ty_suffix):
- out_f.write("\t/// " + line)
- out_f.write("\tpublic static native ")
- map_type(re_match.group(1), True)
- out_f.write(ret_ty_suffix + " " + re_match.group(2).replace('_', '') + "(")
- map_fn_args(re_match.group(3))
- out_f.write(");\n")
+ def map_fn(re_match, ret_arr_len):
+ out_java.write("\t/// " + line)
+ out_java.write("\tpublic static native ")
+ out_c.write("JNIEXPORT ")
+
+ _, ret_conv, _ = map_type(re_match.group(1), True, ret_arr_len)
+ if ret_conv is not None:
+ ret_conv_pfx, ret_conv_sfx = ret_conv
+
+ out_java.write(" " + re_match.group(2).replace('_', '') + "(")
+ out_c.write(" JNICALL " + re_match.group(2).replace('_', '') + "(JNIEnv * _env, jclass _b")
+
+ arg_names = []
+ for idx, arg in enumerate(re_match.group(3).split(',')):
+ if idx != 0:
+ out_java.write(", ")
+ if arg != "void":
+ out_c.write(", ")
+ arg_names.append(map_type(arg, False, None))
+
+ out_java.write(");\n")
+ out_c.write(") {\n")
+
+ for arg_conv, _, _ in arg_names:
+ if arg_conv is not None:
+ out_c.write("\t" + arg_conv.replace('\n', "\n\t") + "\n");
+
+ if ret_conv is not None:
+ out_c.write("\t" + ret_conv_pfx.replace('\n', '\n\t'));
+ else:
+ out_c.write("\treturn ");
+
+ out_c.write(re_match.group(2) + "(")
+ for idx, (_, _, arg) in enumerate(arg_names):
+ if arg is not None:
+ if idx != 0:
+ out_c.write(", ")
+ out_c.write(arg)
+ out_c.write(")")
+ if ret_conv is not None:
+ out_c.write(ret_conv_sfx.replace('\n', '\n\t'))
+ else:
+ out_c.write(";")
+ out_c.write("\n}\n\n")
- out_f.write("""package org.ldk;
+ out_java.write("""package org.ldk;
public class bindings {
static {
}
""")
+ out_c.write("#include \"org_ldk_bindings.h\"\n")
+ out_c.write("#include <rust_types.h>\n\n")
+ out_c.write("#include <lightning.h>\n\n")
in_block_comment = False
in_block_enum = False
in_block_union = False
fn_ptr_regex = re.compile("^extern const ([A-Za-z_0-9\* ]*) \(\*(.*)\)\((.*)\);$")
- fn_ret_arr_regex = re.compile("(.*) \(\*(.*)\((.*)\)\)\[.*\];$")
- reg_fn_regex = re.compile("([A-Za-z_0-9\* ]*) \*?([a-zA-Z_0-9]*)\((.*)\);$")
+ fn_ret_arr_regex = re.compile("(.*) \(\*(.*)\((.*)\)\)\[([0-9]*)\];$")
+ reg_fn_regex = re.compile("([A-Za-z_0-9\* ]* \*?)([a-zA-Z_0-9]*)\((.*)\);$")
- for line in f:
+ for line in in_h:
if in_block_comment:
- #out_f.write("\t" + line)
+ #out_java.write("\t" + line)
if line.endswith("*/\n"):
in_block_comment = False
elif in_block_struct:
if line.startswith("#include <"):
pass
elif line.startswith("/*"):
- #out_f.write("\t" + line)
+ #out_java.write("\t" + line)
if not line.endswith("*/\n"):
in_block_comment = True
elif line.startswith("typedef enum "):
elif line.startswith("typedef "):
pass
elif fn_ptr is not None:
- map_fn(fn_ptr, "")
+ map_fn(fn_ptr, None)
elif fn_ret_arr is not None:
- map_fn(fn_ret_arr, "[]")
+ map_fn(fn_ret_arr, fn_ret_arr.group(4))
elif reg_fn is not None:
- map_fn(reg_fn, "")
+ map_fn(reg_fn, None)
else:
assert(line == "\n")
- out_f.write("}\n");
+ out_java.write("}\n")
projects / ldk-java / blobdiff