CodeGenerator class

(Shortest import: from brian2 import CodeGenerator)

class brian2.codegen.generators.base.CodeGenerator(variables, variable_indices, owner, iterate_all, codeobj_class, name, template_name, override_conditional_write=None, allows_scalar_write=False)

Bases: object

Base class for all languages.

See definition of methods below.

TODO: more details here

Methods

array_read_write(statements)	Helper function, gives the set of ArrayVariables that are read from and written to in the series of statements.
arrays_helper(statements)	Combines the two helper functions array_read_write and get_conditional_write_vars, and updates the read set.
determine_keywords()	A dictionary of values that is made available to the templated.
get_array_name(var[, access_data])	Get a globally unique name for a ArrayVariable.
get_conditional_write_vars()	Helper function, returns a dict of mappings (varname, condition_var_name) indicating that when varname is written to, it should only be when condition_var_name is True.
has_repeated_indices(statements)	Whether any of the statements potentially uses repeated indices (e.g.
translate(code, dtype)	Translates an abstract code block into the target language.
translate_expression(expr)	Translate the given expression string into a string in the target language, returns a string.
translate_one_statement_sequence(statements)
translate_statement(statement)	Translate a single line Statement into the target language, returns a string.
translate_statement_sequence(…)	Translate a sequence of Statement into the target language, taking care to declare variables, etc.

Details

array_read_write(statements)

Helper function, gives the set of ArrayVariables that are read from and written to in the series of statements. Returns the pair read, write of sets of variable names.

arrays_helper(statements)

Combines the two helper functions array_read_write and get_conditional_write_vars, and updates the read set.

determine_keywords()

A dictionary of values that is made available to the templated. This is used for example by the CPPCodeGenerator to set up all the supporting code

static get_array_name(var, access_data=True)

Get a globally unique name for a ArrayVariable.

Parameters:

var : ArrayVariable

The variable for which a name should be found.

access_data : bool, optional

For DynamicArrayVariable objects, specifying True here means the name for the underlying data is returned. If specifying False, the name of object itself is returned (e.g. to allow resizing).

Returns :

——- :

name : str

A uniqe name for var().

get_conditional_write_vars()

Helper function, returns a dict of mappings (varname, condition_var_name) indicating that when varname is written to, it should only be when condition_var_name is True.

has_repeated_indices(statements)

Whether any of the statements potentially uses repeated indices (e.g. pre- or postsynaptic indices).

translate(code, dtype)

Translates an abstract code block into the target language.

translate_expression(expr)

Translate the given expression string into a string in the target language, returns a string.

translate_one_statement_sequence(statements, scalar=False)

translate_statement(statement)

Translate a single line Statement into the target language, returns a string.

translate_statement_sequence(scalar_statements, vector_statements)

Translate a sequence of Statement into the target language, taking care to declare variables, etc. if necessary.

Returns a tuple (scalar_code, vector_code, kwds) where scalar_code is a list of the lines of code executed before the inner loop, vector_code is a list of the lines of code in the inner loop, and kwds is a dictionary of values that is made available to the template.