Fix language bindings:

- clang-14 ast-dump has changed for array types, fix works both for new and old format
- start moving common helper functions into gen_util.py

1 files changed, 57 insertions, 0 deletions

diff --git a/bindgen/gen_util.py b/bindgen/gen_util.py
new file mode 100644
index 00000000..a76f4b2b
--- /dev/null
+++ b/bindgen/gen_util.py
@@ -0,0 +1,57 @@
+# common utility functions for all bindings generators
+import re
+
+re_1d_array = re.compile("^(?:const )?\w*\s*\*?\[\d*\]$")
+re_2d_array = re.compile("^(?:const )?\w*\s*\*?\[\d*\]\[\d*\]$")
+
+def is_1d_array_type(s):
+    return re_1d_array.match(s) is not None
+
+def is_2d_array_type(s):
+    return re_2d_array.match(s) is not None
+
+def is_array_type(s):
+    return is_1d_array_type(s) or is_2d_array_type(s)
+
+def extract_array_type(s):
+    return s[:s.index('[')].strip()
+
+def extract_array_sizes(s):
+    return s[s.index('['):].replace('[', ' ').replace(']', ' ').split()
+
+def is_string_ptr(s):
+    return s == "const char *"
+
+def is_const_void_ptr(s):
+    return s == "const void *"
+
+def is_void_ptr(s):
+    return s == "void *"
+
+def is_func_ptr(s):
+    return '(*)' in s
+
+def extract_ptr_type(s):
+    tokens = s.split()
+    if tokens[0] == 'const':
+        return tokens[1]
+    else:
+        return tokens[0]
+
+# PREFIX_BLA_BLUB to bla_blub
+def as_lower_snake_case(s, prefix):
+    outp = s.lower()
+    if outp.startswith(prefix):
+        outp = outp[len(prefix):]
+    return outp
+
+# prefix_bla_blub => blaBlub, PREFIX_BLA_BLUB => blaBlub
+def as_lower_camel_case(s, prefix):
+    outp = s.lower()
+    if outp.startswith(prefix):
+        outp = outp[len(prefix):]
+    parts = outp.split('_')
+    outp = parts[0]
+    for part in parts[1:]:
+        outp += part.capitalize()
+    return outp