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[RELAY][FRONTEND] Initial MXNet frontend support. (apache#2163)
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,4 @@ | ||
| """Relay frontends.""" | ||
| from __future__ import absolute_import | ||
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| from .mxnet import from_mxnet |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,129 @@ | ||
| """Common utilities""" | ||
| from __future__ import absolute_import as _abs | ||
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| class RequiredAttr(object): | ||
| """Dummpy class to represent required attr""" | ||
| pass | ||
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| class StrAttrsDict(object): | ||
| """Helper class to parse attrs stored as Dict[str, str]. | ||
| Parameters | ||
| ---------- | ||
| attrs : Dict[str, str] | ||
| The attributes to be used. | ||
| """ | ||
| def __init__(self, attrs): | ||
| self.attrs = attrs | ||
|
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||
| def get_float(self, key, default=RequiredAttr()): | ||
| """Get float attribute | ||
| Parameters | ||
| ---------- | ||
| key : str | ||
| The attribute key | ||
| default : float | ||
| The default value. | ||
| Returns | ||
| ------- | ||
| value : The result | ||
| """ | ||
| if key in self.attrs: | ||
| return float(self.attrs[key]) | ||
| if isinstance(default, RequiredAttr): | ||
| raise AttributeError("Required attribute {} not found.".format(key)) | ||
| return default | ||
|
|
||
| def get_int(self, key, default=RequiredAttr()): | ||
| """Get int attribute | ||
| Parameters | ||
| ---------- | ||
| key : str | ||
| The attribute key | ||
| default : float | ||
| The default value. | ||
| Returns | ||
| ------- | ||
| value : The result | ||
| """ | ||
| if key in self.attrs: | ||
| val = self.attrs[key] | ||
| if val == "None": | ||
| return None | ||
| return int(val) | ||
| if isinstance(default, RequiredAttr): | ||
| raise AttributeError("Required attribute {} not found.".format(key)) | ||
| return default | ||
|
|
||
| def get_str(self, key, default=RequiredAttr()): | ||
| """Get str attribute | ||
| Parameters | ||
| ---------- | ||
| key : str | ||
| The attribute key | ||
| default : float | ||
| The default value. | ||
| Returns | ||
| ------- | ||
| value : The result | ||
| """ | ||
| if key in self.attrs: | ||
| return self.attrs[key] | ||
| if isinstance(default, RequiredAttr): | ||
| raise AttributeError("Required attribute {} not found.".format(key)) | ||
| return default | ||
|
|
||
| def get_int_tuple(self, key, default=RequiredAttr()): | ||
| """Get int tuple attribute | ||
| Parameters | ||
| ---------- | ||
| key : str | ||
| The attribute key | ||
| default : float | ||
| The default value. | ||
| Returns | ||
| ------- | ||
| value : The result | ||
| """ | ||
| if key in self.attrs: | ||
| tshape = self.attrs[key] | ||
| return tuple(int(x.strip()) for x in tshape.strip('()').split(',')) | ||
| if isinstance(default, RequiredAttr): | ||
| raise AttributeError("Required attribute {} not found.".format(key)) | ||
| return default | ||
|
|
||
| def get_bool(self, key, default=RequiredAttr()): | ||
| """Get bool tuple attribute | ||
| Parameters | ||
| ---------- | ||
| key : str | ||
| The attribute key | ||
| default : float | ||
| The default value. | ||
| Returns | ||
| ------- | ||
| value : The result | ||
| """ | ||
| if key in self.attrs: | ||
| val = self.attrs[key] | ||
| return val.strip().lower() in ['true', '1', 't', 'y', 'yes'] | ||
| if isinstance(default, RequiredAttr): | ||
| raise AttributeError("Required attribute {} not found.".format(key)) | ||
| return default |
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