Setup online lpython #2328
Setup online lpython #2328
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Add info about the new flags
This would ensure that it does not break in future
ubaidsk
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| # Notes: | ||
| # STANDALONE_WASM is disabling support for exceptions, so it is currently omitted | ||
| # In build_to_wasm.sh, we need CMAKE_CXX_FLAGS_DEBUG="-Wall -Wextra -fexceptions" flags for exception support | ||
| set(WASM_COMPILE_FLAGS "-g0 -fexceptions") | ||
| set(WASM_COMPILE_FLAGS "-g0 -fexceptions -fsanitize=undefined") |
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LPython's parser segfaults in many cases when LPython is build to wasm. It seems LPython uses a different parser as compared to LFortran. I think LPython uses LR(1) parser where as LFortran uses GLR parser.
The above -fsanitize flag is actually a debugging flag, but it seems to make LPython's parser to work.
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Yes, LPython uses LALR(1), which should be an easier parser.
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With a previous version of emscripten, the LPython parser would abort with error in the lines of "large memory ~3.5Gbs requested which is more than the available ~2.4Gbs". With the latest version of emscripten, it says "aborted, runtime error". (I updated my installed emscripten to be sure the errors are not due to some old version. )
Also do not emit warnings for C Intrinsic funcs
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| @@ -164,6 +168,7 @@ abi -- External ABI | |||
| | GFortranModule -- Yes GFortran | |||
| | BindC -- Yes C | |||
| | BindPython -- Yes Python | |||
| | BindJS -- Yes Javascript | |||
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I added a new decorator for calls to Javascript functions. We previously used the (BindC + implementation=interface) for recognizing the functions to be imported. But it seems some functions from the numpy intrinsic module use these exact parameters (BindC + interface) and thus we are unable to distinguish between these numpy intrinsic functions and the functions that call into Javascript.
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I think that's fine. The same should be done in LFortran.
| --> tests/../integration_tests/elemental_01.py:10:24 | ||
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| 10 | assert abs(sin(sin(array[i])) - result[i]) <= eps | ||
| | ^^^^^^^^^^^^^ |
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These few files got removed. I think these were left over from some previous PR.
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After we merge this, we need to update the commit version at https://dev.lpython.org/ (and also the browser window tab name). |
Demo: https://dev.lpython.org/