{%- macro sig(name, inputs, outputs, attrs, mutable_attribute_as_inputs=False, default=False) -%}
template <typename T>
{{ret(outputs)}} {{name}}({{params(inputs, attrs, mutable_attribute_as_inputs, default)}})
{%- endmacro %}


{%- macro params(inputs, attrs, mutable_attribute_as_inputs=False, default=False) -%}
  {%- set input_params = [] -%}
  {%- for i in inputs -%} {%- do input_params.append(i.typename|to_paddle_input_type(i.optional)~' '~i.name) -%} {%- endfor -%}
  {%- set attr_params = [] -%}
  {%- for i in attrs -%}
    {%- if not mutable_attribute_as_inputs or i is not mutable_attribute -%}
      {%- if default -%}
        {%- do attr_params.append(i.typename|to_paddle_attr_type~' '~i.name~default_value(i)) -%}
      {%- else -%}
        {%- do attr_params.append(i.typename|to_paddle_attr_type~' '~i.name) -%}
      {%- endif -%}
    {%- else -%}
      {%- do input_params.append('const Tensor&'~' '~i.name~'_') -%}
    {%- endif -%}
  {%- endfor -%}
  {{sequence('', '', ', ', input_params)}}
  {%- if input_params|length>0 and attr_params|length > 0 -%} {{", "}} {%- endif -%} {#- append comma between inputs and attrs -#}
  {{sequence('', '', ', ', attr_params)}}
{%- endmacro -%}


{%- macro default_value(attr) -%}
  {%- if  'default_value' in attr %}
 = {{attr.default_value}}
  {%- else -%} {#- render nothing -#}
  {%- endif -%}
{%- endmacro -%}


{%- macro args(arg1, arg2) -%}  {#- Arguments are variable pass into method -#}
  {{sequence('', '', ', ', arg1)}}
  {%- if arg1|length>0 and arg2|length > 0 -%} {{", "}} {%- endif -%} {#- append comma between arg1 and arg2 -#}
  {{sequence('', '', ', ', arg2)}}
{%- endmacro -%}


{%- macro ret(outputs) -%}
  {%- set names = [] -%}
  {%- for i in outputs -%} {%- do names.append(i.typename|to_paddle_output_type(i.optional)) -%} {%- endfor -%}
  {%- if names|length > 1 -%}
std::tuple<{{sequence('', '', ', ', names)}}>
  {%- else -%}
{{names[0]}}
  {%- endif -%}
{%- endmacro -%}


{%- macro sequence(lsymbol, rsymbol, delimiter, items) -%}
{{lsymbol}}{%- for item in items -%}{{item}}{{delimiter if not loop.last else "" }}{%- endfor -%}{{rsymbol}}
{%- endmacro -%}


{%- macro phi2ir_attr(attr) -%}
  {%- if attr.typename is intarray -%}
{{intarray2ir(attr.name)}}
  {%- elif attr.typename is scalar -%}
{{scalar2ir(attr.name, attr.data_type)}}
  {%- else -%}
{{attr.name}}
  {%- endif -%}
{%- endmacro %}


{%- macro intarray2ir(name) -%}
{{name}}.GetData()
{%- endmacro -%}


{%- macro scalar2ir(name, data_type) -%}
  {%- if data_type == 'std::vector<Scalar>' -%}
{{name}}
  {%- else -%}
{{name}}.to<{{data_type}}>()
  {%- endif -%}
{%- endmacro -%}