Merge pull request #3 from hx2A/release090a0

release 0.9.0a0

Author: hx2A

README.md

@@ -6,9 +6,9 @@
 
 [![mybinder](https://mybinder.org/badge_logo.svg)](https://mybinder.org/v2/gh/py5coding/py5examples/HEAD?urlpath=lab)
 
-py5 is a new version of [**Processing**][processing] for Python 3.8+. It makes the Java [**Processing**][processing] jars available to the CPython interpreter using [**JPype**][jpype]. It can do just about all of the 2D and 3D drawing [**Processing**][processing] can do, except with Python instead of Java code.
+py5 is a version of [**Processing**][processing] for Python 3.8+. It makes the Java [**Processing**][processing] jars available to the CPython interpreter using [**JPype**][jpype]. It can do just about all of the 2D and 3D drawing [**Processing**][processing] can do, except with Python instead of Java code.
 
-The goal of py5 is to create a new version of Processing that is integrated into the Python ecosystem. Built into the library are thoughtful choices about how to best get py5 to work with other popular Python libraries and tools such as [Jupyter][jupyter], [numpy][numpy], and [Pillow][pillow].
+The goal of py5 is to offer a new version of Processing that is integrated into the Python ecosystem. Built into the library are thoughtful choices about how to best get py5 to work with other popular Python libraries and tools such as [Jupyter][jupyter], [numpy][numpy], and [Pillow][pillow].
 
 ## Simple Example
 
@@ -46,14 +46,15 @@ pip install py5
 
 ## Getting Started
 
-There are currently four basic ways to use py5. They are:
+There are currently five basic ways to use py5. They are:
 
 * **module mode**: create a sketch with `setup()` and `draw()` functions that call methods provided by the `py5` library. The above example is created in module mode.
 * **class mode**: create a Python class inherited from `py5.Sketch`. This mode supports multiple Sketches running at the same time.
 * **imported mode**: simplified code that omits the `py5.` prefix. This mode is supported by the py5 Jupyter notebook kernel and the `run_sketch` command line utility.
 * **static mode**: functionless code to create static images. This mode is supported by the py5bot Jupyter notebook kernel, the `%%py5bot` IPython magic, and the `run_sketch` command line utility.
+* **processing mode**: make calls to Python from a Processing (Java) Sketch. This mode enables py5 to function as bridge, connecting the Python and Java ecosystems through a new `callPython()` method.
 
-The documentation website, [https://py5coding.org/](https://py5coding.org/), is a work in progress. The reference documentation is solid but the how-to's and tutorials are incomplete.
+The documentation website, [https://py5coding.org/](https://py5coding.org/), is a work in progress, but contains solid reference documentation and many tutorials for beginner coders.
 
 [py5generator][py5_generator_repo] is a meta-programming project that creates the py5 library. To view the actual installed py5 library code, look at the [py5 repository][py5_repo]. All py5 library development is done through py5generator.
 

py5/__init__.py

@@ -1,7 +1,7 @@
 # *****************************************************************************
 #
 #   Part of the py5 library
-#   Copyright (C) 2020-2022 Jim Schmitz
+#   Copyright (C) 2020-2023 Jim Schmitz
 #
 #   This library is free software: you can redistribute it and/or modify it
 #   under the terms of the GNU Lesser General Public License as published by

py5/base.py

@@ -1,7 +1,7 @@
 # *****************************************************************************
 #
 #   Part of the py5 library
-#   Copyright (C) 2020-2022 Jim Schmitz
+#   Copyright (C) 2020-2023 Jim Schmitz
 #
 #   This library is free software: you can redistribute it and/or modify it
 #   under the terms of the GNU Lesser General Public License as published by
@@ -33,11 +33,7 @@
 import py5_tools
 from . import reference
 from . import custom_exceptions
-# from . import java_conversion
 
-# *** stacktrace configuration ***
-# set stackprinter color style. Default is plaintext. Other choices are darkbg,
-# darkbg2, darkbg3, lightbg, lightbg2, lightbg3.
 _stackprinter_style = 'plaintext'
 # prune tracebacks to only show only show stack levels in the user's py5 code.
 _prune_tracebacks = True
@@ -95,12 +91,13 @@ def handle_exception(println, exc_type, exc_value, exc_tb):
             tb = exc_tb.tb_next
             while hasattr(tb, 'tb_next') and hasattr(tb, 'tb_frame'):
                 f_code = tb.tb_frame.f_code
-                if f_code.co_filename.startswith(_MODULE_INSTALL_DIR):
+                if f_code.co_filename.startswith(
+                        _MODULE_INSTALL_DIR) and not f_code.co_name.endswith('py5_no_prune'):
                     py5info.append((Path(f_code.co_filename[(len(_MODULE_INSTALL_DIR) + 1):]).parts,
                                     f_code.co_name))
                     if trim_tb is None:
                         trim_tb = prev_tb
-                elif f_code.co_filename.startswith(_PY5TOOLS_MODULE_INSTALL_DIR):
+                elif f_code.co_filename.startswith(_PY5TOOLS_MODULE_INSTALL_DIR) and not f_code.co_name.endswith('py5_no_prune'):
                     py5info.append((Path(f_code.co_filename[(
                         len(_PY5TOOLS_MODULE_INSTALL_DIR) + 1):]).parts, f_code.co_name))
                     if trim_tb is None:
@@ -134,7 +131,7 @@ def handle_exception(println, exc_type, exc_value, exc_tb):
         while m := _PY5_STATIC_CODE_FILENAME_REGEX.search(errmsg):
             errmsg = errmsg[m.span()[1]:]
         else:
-            errmsg = "py5 encountered an error in your code:" + errmsg
+            errmsg = "py5 encountered an error in your code:\n\n" + errmsg
 
     println(errmsg, stderr=True)
 
@@ -174,8 +171,9 @@ def __init__(self, sketch):
         self._current_running_method = None
         self._is_terminated = False
 
-        from .java_conversion import convert_to_python_types
+        from .object_conversion import convert_to_python_types, convert_to_java_type
         self._convert_to_python_types = convert_to_python_types
+        self._convert_to_java_type = convert_to_java_type
 
     def set_functions(self, functions, function_param_counts):
         self._function_param_counts = dict()
@@ -294,11 +292,11 @@ def call_function(self, key, params):
                     subd = d[s]
                     if isinstance(subd, dict):
                         d = subd
-                    elif hasattr(subd, '__dict__'):
-                        d = subd.__dict__
+                    elif hasattr(subd, '__dir__') or hasattr(subd, '__dict__'):
+                        d = {k: getattr(subd, k) for k in dir(subd)}
                     else:
                         return _JAVA_RUNTIMEEXCEPTION(
-                            f'{s} in key {key} does map to dict or object with __dict__ attribute')
+                            f'{s} in key {key} does not map to a dict or an object that can be inspected with dir()')
                 else:
                     return _JAVA_RUNTIMEEXCEPTION(
                         f'{s} not found with key {key}')
@@ -314,7 +312,7 @@ def call_function(self, key, params):
                         key)
                     if key in py5_tools.config._PY5_PROCESSING_MODE_KEYS:
                         py5_tools.config._PY5_PROCESSING_MODE_KEYS.pop(key)
-                return retval
+                return self._convert_to_java_type(retval)
             except Exception as e:
                 handle_exception(self._sketch.println, *sys.exc_info())
                 return _JAVA_RUNTIMEEXCEPTION(str(e))

py5/bridge.py

@@ -1,7 +1,7 @@
 # *****************************************************************************
 #
 #   Part of the py5 library
-#   Copyright (C) 2020-2022 Jim Schmitz
+#   Copyright (C) 2020-2023 Jim Schmitz
 #
 #   This library is free software: you can redistribute it and/or modify it
 #   under the terms of the GNU Lesser General Public License as published by
@@ -36,6 +36,13 @@ def __init__(
         self.filename = filename or f'{font_name}-{font_size}.vlw'
         self.characters = characters
 
+    def __str__(self) -> str:
+        return f"CreateFontTool(font_name='" + self.font_name + \
+            "', font_size=" + str(self.font_size) + ")"
+
+    def __repr__(self) -> str:
+        return self.__str__()
+
     def settings(self):
         self.size(400, 100, self.P2D)
 
@@ -103,16 +110,16 @@ def create_font_file(
 
     By default it will create data files for every character available in the
     specified font. To reduce execution time and output file size, limit the
-    characters using the ``characters`` parameter. The default output filename is
-    ``{font_name}-{font_size}.vlw`` and will be saved to the current directory.
+    characters using the `characters` parameter. The default output filename is
+    `{font_name}-{font_size}.vlw` and will be saved to the current directory.
 
     This utility function opens a window that displays a short message about the
     number of glyphs written to the file. To make the window close automatically,
-    set the ``pause`` parameter to ``False``.
+    set the `pause` parameter to `False`.
 
     Get a list of font names available on your computer with Py5Font's
-    ``Py5Font.list()`` method. If you request an unavailable font, it will create
-    the data file anyway but using a default font."""
+    `Py5Font.list()` method. If you request an unavailable font, it will create the
+    data file anyway but using a default font."""
     vlw_creator = CreateFontTool(font_name, font_size,
                                  filename=filename, characters=characters,
                                  pause=pause)

py5/create_font_tool.py

@@ -1,7 +1,7 @@
 # *****************************************************************************
 #
 #   Part of the py5 library
-#   Copyright (C) 2020-2022 Jim Schmitz
+#   Copyright (C) 2020-2023 Jim Schmitz
 #
 #   This library is free software: you can redistribute it and/or modify it
 #   under the terms of the GNU Lesser General Public License as published by
@@ -19,10 +19,14 @@
 # *****************************************************************************
 import re
 
+import py5_tools
+
 from . import reference
+from . import spelling
 
 JPYPE_TYPEERROR_REGEX = re.compile(
     r'No matching overloads found for [\w\.]*(\([^\)]*\))')
+IMPORTED_MODE_NAMEERROR_REGEX = re.compile(r"name '(\w+)' is not defined")
 
 
 def handle_typeerror(exc_type_name, exc_msg, py5info):
@@ -46,6 +50,21 @@ def handle_typeerror(exc_type_name, exc_msg, py5info):
     return exc_msg
 
 
+def handle_nameerror(exc_type_name, exc_msg, py5info):
+    if py5_tools.imported.get_imported_mode():
+        m = IMPORTED_MODE_NAMEERROR_REGEX.match(exc_msg)
+        if m:
+            fname = m.group(1)
+            exc_msg = 'The name "' + fname + '" is not defined.'
+            suggestion_list = spelling.suggestions(
+                fname, py5_tools.reference.PY5_DIR_STR)
+            if suggestion_list:
+                exc_msg += ' Did you mean ' + suggestion_list + '?'
+
+    return exc_msg
+
+
 CUSTOM_EXCEPTION_MSGS = dict(
     TypeError=handle_typeerror,
+    NameError=handle_nameerror,
 )

py5/custom_exceptions.py

@@ -1,7 +1,7 @@
 # *****************************************************************************
 #
 #   Part of the py5 library
-#   Copyright (C) 2020-2022 Jim Schmitz
+#   Copyright (C) 2020-2023 Jim Schmitz
 #
 #   This library is free software: you can redistribute it and/or modify it
 #   under the terms of the GNU Lesser General Public License as published by