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Cross platform standard library #59
Description
The transpiled code seems to be highly backend dependant. Attempting something like a basic python slice already breaks c++ code:
def say_hi():
print( 'hello world'[3:6])
==>
File "./rusthon.py", line 539, in build
pak = translate_to_cpp( pyjs, cached_json_files=cached_json ) ## pak contains: c_header and cpp_header
File "<string>", line 13898, in translate_to_cpp
File "<string>", line 1244, in visit
File "<string>", line 13547, in visit_Module
File "<string>", line 1244, in visit
File "<string>", line 6341, in visit_FunctionDef
File "<string>", line 12084, in _visit_function
File "<string>", line 12212, in generate_generic_branches
File "<string>", line 1244, in visit
File "<string>", line 13723, in visit_Print
File "<string>", line 1244, in visit
File "<string>", line 10764, in visit_Subscript
__main__.GenerateSlice: {'upper': '6', 'lower': '3', 'slice': <_ast.Slice object at 0x102deabd0>, 'step': None, 'value': 'std::string("hello world")'}
Looks like to do some effective crossplatform program rusthon needs to reimplement a generic standard library which sometimes will map to the native standard library or implement some minimal code. Or maybe I have missed this support. Is it possible to write something like print(a.replace("h", "a")) and have it work on C++, Go, and Java?
Activity
jcrubino commentedon Aug 17, 2015
This should be a priority and the standard tests can be built from this.
Where to start, Math, IO, Filesystem, OS?
techtonik commentedon Aug 18, 2015
This crosses needs with a PyPy project, where a lot of new languages written in RPython could benefit from such library of functionality with a known behaviour.
jcrubino commentedon Aug 18, 2015
Great observation
On Tue, Aug 18, 2015 at 5:23 AM, anatoly techtonik <notifications@github.com
wolfv commentedon Nov 15, 2015
I would be interested in helping to create a python standard library for the JS backend. E.g. starting with
mathandrandomand then looking further to what needs to be done.Would it make sense to create a repo under the rusthon umbrella for this purpose?
techtonik commentedon Nov 17, 2015
Any cross-language / cross-platform library should start with some kind of language-independent tests of behavior.