pynestml.meta_model package

Submodules

pynestml.meta_model.ast_arithmetic_operator module

class pynestml.meta_model.ast_arithmetic_operator.ASTArithmeticOperator(is_times_op: bool, is_div_op: bool, is_modulo_op: bool, is_plus_op: bool, is_minus_op: bool, is_pow_op: bool, *args, **kwargs)

Bases: ASTNode

This class is used to store a single arithmetic operator, e.g. +.

No grammar. This part is defined outside the grammar to make processing and storing of models easier and comprehensible.

is_times_op = False # type: bool

is_div_op = False # type: bool

is_modulo_op = False # type: bool

is_plus_op = False # type: bool

is_minus_op = False # type: bool

is_pow_op = False # type: bool

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTArithmeticOperator

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

pynestml.meta_model.ast_assignment module

class pynestml.meta_model.ast_assignment.ASTAssignment(lhs: ASTVariable | None = None, is_direct_assignment: bool = False, is_compound_sum: bool = False, is_compound_minus: bool = False, is_compound_product: bool = False, is_compound_quotient: bool = False, rhs: ASTExpression | None = None, *args, **kwargs)

Bases: ASTNode

This class is used to store assignments. Grammar:

assignmentlhs_variable=variable
(directAssignment=”=” | compoundSum=”+=” | compoundMinus=”-=” | compoundProduct=”*=” | compoundQuotient=”/=”) rhs;

lhs = None

is_direct_assignment = False

is_compound_sum = False

is_compound_minus = False

is_compound_product = False

is_compound_quotient = False

rhs = None

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTAssignment

construct_equivalent_direct_assignment_rhs(operator, lhs_variable, rhs_in_brackets)

equals(other: ASTNode) → bool: The equality method.

extract_operator_from_compound_assignment()

get_bracketed_rhs_expression()

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_expression(): Returns the right-hand side rhs. :return: rhs object. :rtype: ast_expression

get_lhs_variable_as_expression()

get_variable(): Returns the left-hand side variable. :return: left-hand side variable object. :rtype: ASTVariable

pynestml.meta_model.ast_bit_operator module

class pynestml.meta_model.ast_bit_operator.ASTBitOperator(is_bit_and=False, is_bit_xor=False, is_bit_or=False, is_bit_shift_left=False, is_bit_shift_right=False, *args, **kwargs)

Bases: ASTNode

This class is used to store a single bit operator. Grammar:

bitOperator : (bitAnd=”&”| bitXor=”^” | bitOr=”|” | bitShiftLeft=”<<” | bitShiftRight=”>>”);

is_bit_and = False

is_bit_xor = False

is_bit_or = False

is_bit_shift_left = False

is_bit_shift_right = False

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTBitOperator

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

pynestml.meta_model.ast_block_with_variables module

class pynestml.meta_model.ast_block_with_variables.ASTBlockWithVariables(is_state=False, is_parameters=False, is_internals=False, declarations=None, *args, **kwargs)

Bases: ASTNode

This class is used to store a block of variable declarations. ast_block_with_variables.py represent a block with variables, e.g.:

state:
y0, y1, y2, y3 mV [y1 > 0; y2 > 0]

attribute state: true if the varblock is a state. attribute parameter: true if the varblock is a parameter. attribute internal: true if the varblock is a state internal. Grammar:

blockWithVariables:
blockType=(“state”|”parameters”|”internals”) BLOCK_OPEN

(declaration | NEWLINE)*

BLOCK_CLOSE;

is_state = False

is_parameters = False

is_internals = False

declarations = None

clear(): Clears the list of declarations in this block.

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTBlockWithVariables

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_declarations(): Returns the set of stored declarations. :return: set of declarations :rtype: set(ASTDeclaration)

pynestml.meta_model.ast_comparison_operator module

class pynestml.meta_model.ast_comparison_operator.ASTComparisonOperator(is_lt=False, is_le=False, is_eq=False, is_ne=False, is_ne2=False, is_ge=False, is_gt=False, *args, **kwargs)

Bases: ASTNode

This class is used to store a single comparison operator. Grammar:

comparisonOperator : (lt=”<” | le=”<=” | eq=”==” | ne=”!=” | ne2=”<>” | ge=”>=” | gt=”>”);

is_lt = False

is_le = False

is_eq = False

is_ne = False

is_ne2 = False

is_ge = False

is_gt = False

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTComparisonOperator

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

pynestml.meta_model.ast_compound_stmt module

class pynestml.meta_model.ast_compound_stmt.ASTCompoundStmt(if_stmt=None, while_stmt=None, for_stmt=None, *args, **kwargs)

Bases: ASTNode

This class is used to store compound statements. Grammar:

compoundStmtifStmt

forStmt

whileStmt;

if_stmt = None

while_stmt = None

for_stmt = None

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTCompoundStmt

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_for_stmt(): Returns the for statement. :return: the for statement. :rtype: ASTForStmt

get_if_stmt(): Returns the “if” statement. :return: the “if” statement. :rtype: ASTIfStmt

get_while_stmt(): Returns the while statement. :return: the while statement. :rtype: ASTWhileStmt

is_for_stmt(): Returns whether it is an “for” statement or not. :return: True if “for” stmt, False else. :rtype: bool

is_if_stmt(): Returns whether it is an “if” statement or not. :return: True if if stmt, False else. :rtype: bool

is_while_stmt(): Returns whether it is an “while” statement or not. :return: True if “while” stmt, False else. :rtype: bool

pynestml.meta_model.ast_data_type module

class pynestml.meta_model.ast_data_type.ASTDataType(is_integer=False, is_real=False, is_string=False, is_boolean=False, is_void=False, unit_type: ASTUnitType | None = None, type_symbol=None, *args, **kwargs)

Bases: ASTNode

A datatype class as used to store a datatype of an element. ASTDataType. Represents predefined datatypes and gives a possibility to use an unit datatype. @attribute boolean getters for integer, real, … @attribute unitType a SI datatype datatype : “integer”

“real”

“string”

“boolean”

“void”

unitType;

is_integer = False

is_real = False

is_string = False

is_boolean = False

is_void = False

unit_type = None # a unit type is not a boolean, but a concrete object

type_symbol = None # the corresponding type symbol

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTDataType

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_type_symbol(): Returns the corresponding type symbol. :return: a single type symbol element. :rtype: type_symbol

get_unit_type(): Returns the unit type. :return: the unit type object. :rtype: ASTUnitType

is_unit_type(): Returns whether this is a unit type or not. :return: True if unit type typed, otherwise False. :rtype: bool

set_type_symbol(type_symbol): Updates the current type symbol to the handed over one. :param type_symbol: a new type symbol element. :type type_symbol: TypeSymbol.

pynestml.meta_model.ast_declaration module

class pynestml.meta_model.ast_declaration.ASTDeclaration(is_recordable: bool = False, is_inline_expression: bool = False, _variables: List[ASTVariable] | None = None, data_type: ASTDataType | None = None, size_parameter: ASTSimpleExpression | ASTExpression | None = None, expression: ASTExpression | None = None, invariant: ASTExpression | None = None, decorators=None, *args, **kwargs)

Bases: ASTNode

This class is used to store declarations. ASTDeclaration A variable declaration. It can be a simple declaration defining one or multiple variables: “a,b,c real = 0”. @attribute hide is true iff. declaration is not traceable. @attribute function is true iff. declaration is an function. @attribute vars List with variables @attribute Datatype Obligatory data type, e.g. “real” or “mV/s” @attribute sizeParameter An optional array parameter. E.g. “tau_syn ms[n_receptors]” @attribute expr An optional initial rhs, e.g. “a real = 10+10” @attribute invariants List with optional invariants. Grammar:

declaration :
(“recordable”)? (“function”)? variable (“,” variable)* datatype (“[” sizeParameter=NAME “]”)? ( “=” rhs)? (“[[” invariant=rhs “]]”)?;

is_recordable = False

is_inline_expression = False

variables = None

data_type = None

size_parameter = None

expression = None

invariant = None

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTDeclaration

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_data_type(): Returns the data type. :return: a data type object. :rtype: ASTDataType

get_decorators()

get_expression(): Returns the right-hand side rhs. :return: the right-hand side rhs. :rtype: ASTExpression

get_invariant(): Returns the invariant. :return: the invariant :rtype: ASTExpression

get_size_parameter() → ASTSimpleExpression | ASTExpression | None: Returns the size parameter. :return: the size parameter.

get_variables(): Returns the set of left-hand side variables. :return: a list of variables. :rtype: list(ASTVariables)

has_expression() → bool: Returns whether the declaration has a right-hand side rhs or not. :return: True if right-hand side rhs declared, else False.

has_invariant(): Returns whether the declaration has a invariant or not. :return: True if has invariant, otherwise False. :rtype: bool

has_size_parameter() → bool: Returns whether the declaration has a size parameter or not. :return: True if has size parameter, else False.

set_expression(expr: ASTExpression) → None

set_size_parameter(_parameter: ASTSimpleExpression | ASTExpression | None): Updates the current size parameter to a new value. :param _parameter: the size parameter

pynestml.meta_model.ast_elif_clause module

class pynestml.meta_model.ast_elif_clause.ASTElifClause(condition, stmts_body: ASTStmtsBody, *args, **kwargs)

Bases: ASTNode

This class is used to store elif-clauses.

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTElifClause

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_condition() → ASTExpression: Returns the condition of the elif. :return: the condition.

get_stmts_body() → ASTStmtsBody: Returns the body of statements. :return: the body of statements.

pynestml.meta_model.ast_else_clause module

class pynestml.meta_model.ast_else_clause.ASTElseClause(stmts_body: ASTStmtsBody, *args, **kwargs)

Bases: ASTNode

This class is used to store a single else-clause.

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTElseClause

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_stmts_body() → ASTStmtsBody: Returns the body of statements. :return: the body of statements.

pynestml.meta_model.ast_equations_block module

class pynestml.meta_model.ast_equations_block.ASTEquationsBlock(declarations, *args, **kwargs)

Bases: ASTNode

This class is used to store an equations block.

clear(): Deletes all declarations as stored in this block.

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTEquationsBlock

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_declarations(): Returns the block of definitions. :return: the block :rtype: list(ASTInlineExpression|ASTOdeEquation)

get_inline_expressions() → Sequence[ASTInlineExpression]: Returns a list of all inline expressions in this block. :return: a list of all inline expressions.

get_kernels() → Sequence[ASTKernel]: Returns a list of all kernels in this block. :return: a list of all kernels.

get_ode_equations() → Sequence[ASTOdeEquation]: Returns a list of all ode equations in this block. :return: a list of all ode equations.

pynestml.meta_model.ast_expression module

class pynestml.meta_model.ast_expression.ASTExpression(is_encapsulated: bool = False, unary_operator: ASTUnaryOperator | None = None, is_logical_not: bool = False, expression: ASTExpression | None = None, lhs: ASTExpression | None = None, binary_operator: ASTLogicalOperator | ASTComparisonOperator | ASTBitOperator | ASTArithmeticOperator | None = None, rhs: ASTExpression | None = None, condition: ASTExpression | None = None, if_true: ASTExpression | None = None, if_not: ASTExpression | None = None, has_delay: bool = False, *args, **kwargs)

Bases: ASTExpressionNode

ASTExpr, i.e., several subexpressions combined by one or more operators, e.g., 10mV + V_m - (V_reset * 2)/ms …. or a simple rhs, e.g. 10mV. Grammar:

rhsleftParentheses=”(” rhs rightParentheses=”)”

<assoc=right> base=rhs powOp=”**” exponent=rhs

unaryOperator term=rhs

left=rhs (timesOp=”*” | divOp=”/” | moduloOp=”%”) right=rhs

left=rhs (plusOp=”+” | minusOp=”-”) right=rhs

left=rhs bitOperator right=rhs

left=rhs comparisonOperator right=rhs

logicalNot=”not” rhs

left=rhs logicalOperator right=rhs

condition=rhs “?” ifTrue=rhs “:” ifNot=rhs

simpleExpression

;

# encapsulated or with unary operator or with a logical not or just a simple rhs.

is_encapsulated = False

is_logical_not = False

unary_operator = None

expression = None

# lhs and rhs combined by an operator

lhs = None

binary_operator = None

rhs = None

# ternary operator

condition = None

if_true = None

if_not = None

# simple rhs

simple_expression = None

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTExpression

equals(other: ASTNode) → bool: The equality method.

get_binary_operator(): Returns the binary operator. :return: the binary operator. :rtype: one of ASTLogicalOperator,ASTComparisonOperator,ASTBitOperator,ASTArithmeticOperator

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_condition(): Returns the condition rhs. :return: the condition rhs. :rtype: ASTExpression

get_expression(): Returns the rhs. :return: the rhs. :rtype: ASTExpression

get_function_calls(): Returns a list of all function calls as used in this rhs :return: a list of all function calls in this rhs. :rtype: list(ASTFunctionCall)

get_has_delay(): Returns the has_delay parameter :return:

get_if_not(): Returns the rhs used in the case that the condition does not hold. :return: the if-not condition. :rtype: ASTExpression

get_if_true(): Returns the rhs used in the case that the condition holds. :return: the if-true condition. :rtype: ASTExpression

get_lhs(): Returns the left-hand side rhs. :return: the left-hand side rhs. :rtype: ASTExpression

get_rhs(): Returns the right-hand side rhs. :return: the right-hand side rhs. :rtype: ASTExpression

get_unary_operator(): Returns the unary operator. :return: the unary operator. :rtype: ASTUnaryOperator.

get_units(): Returns a list of all units as use in this rhs. :return: a list of all used units. :rtype: list(ASTVariable)

get_variables(): Returns a list of all variables as used in this rhs. :return: a list of variables. :rtype: list(ASTVariable)

is_compound_expression(): Returns whether it is a compound rhs, e.g., 10+10 :return: True if compound rhs, otherwise False. :rtype: bool

is_expression()

Return type:: bool

is_ternary_operator(): Returns whether it is a ternary operator. :return: True if ternary operator, otherwise False. :rtype: bool

is_unary_operator(): Returns whether the rhs uses an unary operator. :return: True if unary operator, otherwise False. :rtype: bool

pynestml.meta_model.ast_expression_node module

class pynestml.meta_model.ast_expression_node.ASTExpressionNode(*args, **kwargs)

Bases: ASTNode

This class is not a part of the grammar but is used to store commonalities of expression-type nodes.

This class is abstract, thus no instances can be created.

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

property type

pynestml.meta_model.ast_external_variable module

class pynestml.meta_model.ast_external_variable.ASTExternalVariable(name, altname=None, altscope=None, *args, **kwargs)

Bases: ASTVariable

This class is used to store a single “external” variable: a variable the value of which is obtained during runtime from a neuron’s postsynaptic partner.

clone(): Return a clone (“deep copy”) of this node.

get_alternate_name()

get_scope(): Returns the scope of this element. :return: a scope object. :rtype: Scope

set_alternate_name(alternate_name: str | None)

update_alt_scope(scope)

pynestml.meta_model.ast_for_stmt module

class pynestml.meta_model.ast_for_stmt.ASTForStmt(variable, start_from, end_at, step, stmts_body: ASTStmtsBody, *args, **kwargs)

Bases: ASTNode

This class is used to store a “for” statement.

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTForStmt

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_end_at(): Returns the to-statement. :return: the rhs indicating the finish value. :rtype: ast_expression

get_start_from(): Returns the from-statement. :return: the rhs indicating the start value. :rtype: ast_expression

get_step(): Returns the length of a single step. :return: the length as a float. :rtype: float

get_stmts_body() → ASTStmtsBody: Returns the body of statements. :return: the body of statements.

get_variable(): Returns the name of the step variable. :return: the name of the step variable. :rtype: str

pynestml.meta_model.ast_function module

class pynestml.meta_model.ast_function.ASTFunction(name: str, parameters: List[ASTParameter], return_type: ASTDataType | None, stmts_body: ASTStmtsBody, type_symbol=None, *args, **kwargs)

Bases: ASTNode

This class is used to store a user-defined function. ASTFunction a function definition:

function set_V_m(v mV):
y3 = v - E_L

@attribute name Functionname. @attribute parameter A single parameter. @attribute returnType Complex return type, e.g. String @attribute primitiveType Primitive return type, e.g. int @attribute block Implementation of the function. Grammar: function: “function” NAME “(” (parameter (“,” parameter)*)? “)” (returnType=datatype)?

BLOCK_OPEN
block

BLOCK_CLOSE;

name = None

parameters = None

return_type = None

block = None

# the corresponding type symbol

type_symbol = None

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTFunction

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_name(): Returns the name of the function. :return: the name of the function. :rtype: str

get_parameters() → List[ASTParameter]: Returns the list of parameters. :return: a parameters object containing the list.

get_return_type(): Returns the return type of function. :return: the return type :rtype: ast_data_type

get_stmts_body() → ASTStmtsBody: Returns the body containing the statements. :return: the body

get_type_symbol(): Returns the type symbol of this rhs. :return: a single type symbol. :rtype: type_symbol

has_parameters() → bool: Returns whether parameters have been defined. :return: True if parameters defined, otherwise False.

has_return_type(): Returns whether return a type has been defined. :return: True if return type defined, otherwise False. :rtype: bool

set_type_symbol(type_symbol): Updates the current type symbol to the handed over one. :param type_symbol: a single type symbol object. :type type_symbol: type_symbol

pynestml.meta_model.ast_function_call module

class pynestml.meta_model.ast_function_call.ASTFunctionCall(callee_name, function_call_args, *args, **kwargs)

Bases: ASTNode

This class is used to store a single function call. ASTFunctionCall Represents a function call, e.g. myFun(“a”, “b”). @attribute name The (qualified) name of the function @attribute args Comma separated list of expressions representing parameters. Grammar:

functionCall : calleeName=NAME “(” (rhs (“,” rhs)*)? “)”;

callee_name = None

args = None

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTFunctionCall

equals(other: ASTNode) → bool: The equality method.

get_args() → List[ASTParameter]: Returns the list of arguments. :return: the list of arguments.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_name(): Returns the name of the called function. :return: the name of the function. :rtype: str.

has_args(): Returns whether function call has arguments or not. :return: True if has arguments, otherwise False. :rtype: bool

pynestml.meta_model.ast_if_clause module

class pynestml.meta_model.ast_if_clause.ASTIfClause(condition, stmts_body: ASTStmtsBody, *args, **kwargs)

Bases: ASTNode

This class is used to store a single if-clause.

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTIfClause

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_condition(): Returns the condition of the if statement. :return: the condition. :rtype: ASTExpression

get_stmts_body() → ASTStmtsBody: Returns the body of statements. :return: the body of statements.

pynestml.meta_model.ast_if_stmt module

class pynestml.meta_model.ast_if_stmt.ASTIfStmt(if_clause, elif_clauses=None, else_clause=None, *args, **kwargs)

Bases: ASTNode

This class is used to store a single if block. Grammar:

ifStmtifClause
elifClause* (elseClause)? BLOCK_CLOSE;

if_clause = None

elif_clauses = None

else_clause = None

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTIfStmt

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_elif_clauses(): Returns a list of elif-clauses. :return: a list of elif-clauses. :rtype: List[ASTElifClause]

get_else_clause(): Returns the else-clause. :return: the else-clause. :rtype: ASTElseClause

get_if_clause(): Returns the if-clause. :return: the if clause :rtype: ASTfClause

has_elif_clauses(): Returns whether object contains elif clauses. :return: True if at leas one elif clause, False else. :rtype: bool

has_else_clause(): Returns whether object contains elif clauses. :return: True if object contains an else-clause, False else. :rtype: bool

pynestml.meta_model.ast_inline_expression module

class pynestml.meta_model.ast_inline_expression.ASTInlineExpression(is_recordable=False, variable_name=None, data_type=None, expression=None, decorators=None, *args, **kwargs)

Bases: ASTNode

Stores a single declaration of an inline expression, e.g.,: inline v_init mV = V_m - 50mV.
Grammar:: inline : (recordable=”recordable”)? INLINE_KEYWORD variableName=NAME datatype “=” rhs;

is_recordable = False

variable_name = None

data_type = None

expression = None

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTInlineExpression

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_data_type(): Returns the data type as an object of ASTDatatype. :return: the type as an object of ASTDatatype. :rtype: ast_data_type

get_decorators()

get_expression(): Returns the rhs as an object of ASTExpression. :return: the rhs as an object of ASTExpression. :rtype: ast_expression

get_variable_name(): Returns the variable name. :return: the name of the variable. :rtype: str

set_variable_name(variable_name: str): Set the variable name. :param variable_name: the name of the variable.

pynestml.meta_model.ast_input_block module

class pynestml.meta_model.ast_input_block.ASTInputBlock(input_definitions=None, *args, **kwargs)

Bases: ASTNode

This class is used to store the input block of a model, e.g.:

input:
    spike_in <- spike
    current_in pA <- continuous

input_definitions = None

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTInputBlock

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_input_ports() → List[ASTInputPort]: Returns the list of input ports. :return: a list of input ports

pynestml.meta_model.ast_input_port module

class pynestml.meta_model.ast_input_port.ASTInputPort(name: str, signal_type: PortSignalType, size_parameter: ASTSimpleExpression | ASTExpression | None = None, data_type: ASTDataType | None = None, *args, **kwargs)

Bases: ASTNode

This class is used to store a declaration of an input port. ASTInputPort represents a single input port, e.g.:

spike_in <- spike

@attribute name: The name of the input port. @attribute sizeParameter: Optional size parameter for multisynapse neuron. @attribute datatype: Optional data type of the port. @attribute isSpike: Indicates that this input port accepts spikes. @attribute isContinuous: Indicates that this input port accepts continuous time input.

clone() → ASTInputPort

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_datatype() → ASTDataType: Returns the currently used data type of this port. :return: a single data type object.

get_name() → str: Returns the name of the declared input port. :return: the name.

get_size_parameter() → ASTSimpleExpression | ASTExpression | None: Returns the size parameter. :return: the size parameter.

has_datatype(): Returns whether this port has a defined data type or not. :return: True if it has a datatype, otherwise False.

has_size_parameter() → bool: Returns whether a size parameter has been defined. :return: True if size has been used, otherwise False.

is_continuous() → bool: Returns whether this is a continous time port or not. :return: True if continuous time, False otherwise.

is_spike() → bool: Returns whether this is a spiking input port or not. :return: True if spike input port, False otherwise.

pynestml.meta_model.ast_kernel module

class pynestml.meta_model.ast_kernel.ASTKernel(variables, expressions, *args, **kwargs)

Bases: ASTNode

This class is used to store kernels. Grammar:

kernel : KERNEL_KEYWORD variable EQUALS expression (COMMA variable EQUALS expression)* (SEMICOLON)?;

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTInputPort

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_expressions(): Returns the right-hand side rhs. :return: the rhs :rtype: ast_expression

get_variable_names(): Returns the variable of the left-hand side. :return: the variable :rtype: ast_variable

get_variables(): Returns the variable of the left-hand side. :return: the variable :rtype: ast_variable

pynestml.meta_model.ast_logical_operator module

class pynestml.meta_model.ast_logical_operator.ASTLogicalOperator(is_logical_and=False, is_logical_or=False, *args, **kwargs)

Bases: ASTNode

This class is used to store a single logical operator. Grammar:

logicalOperator : (logicalAnd=”and” | logicalOr=”or”);

is_logical_and = False

is_logical_or = False

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTLogicalOperator

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

pynestml.meta_model.ast_model module

class pynestml.meta_model.ast_model.ASTModel(name: str, body: ASTModelBody, artifact_name=None, *args, **kwargs)

Bases: ASTNode

This class is used to stuff common to neurons and synapses

add_to_internals_block(declaration: ASTDeclaration, index: int = -1, run_symboltable_visitor: bool = True) → None: Adds the handed over declaration the internals block :param declaration: a single declaration

add_to_state_block(declaration: ASTDeclaration) → None: Adds the handed over declaration to an arbitrary state block. A state block will be created if none exists. :param declaration: a single declaration.

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTModel

create_empty_update_block(): Create an empty update block. Only makes sense if one does not already exist.

equals(other: ASTNode) → bool: The equality method.

get_all_kernels()

get_artifact_name() → str: Returns the name of the artifact this model has been stored in. :return: the name of the file

get_body() → ASTModelBody: Return the body of the model. :return: the model body

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_continuous_input_port_names() → List[str]: Returns a list of all continuous time input ports defined in the model.

get_continuous_input_ports() → List[VariableSymbol]: Returns a list of all continuous time input ports defined in the model.

get_current_buffers(): Returns a list of all current buffers defined in the model. :return: a list of all current input buffers. :rtype: list(VariableSymbol)

get_default_delay_dtype()

get_default_delay_expression()

get_default_delay_variable()

get_equations() → List[ASTOdeEquation]: Returns all ode equations as defined in this neuron. :return list of ode-equations

get_equations_blocks() → List[ASTEquationsBlock]: Returns a list of all equations blocks defined in this body. :return: a list of equations-blocks.

get_functions() → List[ASTFunction]: Returns a list of all function block declarations in this body. :return: a list of function declarations.

get_initial_value(variable_name: str)

get_inline_expression_symbols() → List[VariableSymbol]: Returns a list of all inline expression symbols defined in the model. :return: a list of symbols

get_input_blocks() → List[ASTInputBlock]: Returns a list of all input-blocks defined. :return: a list of defined input-blocks.

get_input_buffers(): Returns a list of all defined input buffers. :return: a list of all input buffers. :rtype: list(VariableSymbol)

get_input_ports() → List[VariableSymbol]: Returns a list of all defined input ports. :return: a list of all input ports.

get_internal_symbols() → List[VariableSymbol]: Returns a list of all internals symbol defined in the model. :return: a list of internals symbols.

get_internals_blocks() → List[ASTBlockWithVariables]: Returns a list of all internals blocks defined in this body. :return: a list of internals-blocks.

get_kernel_by_name(kernel_name: str) → ASTKernel | None

get_name() → str: Returns the name of the model. :return: the name of the model.

get_non_inline_state_symbols() → List[VariableSymbol]: Returns a list of all state symbols as defined in the model which are not marked as inline expressions. :return: a list of symbols

get_ode_defined_symbols(): Returns a list of all variable symbols which have been defined in th state blocks and are provided with an ode. :return: a list of state variables with odes :rtype: list(VariableSymbol)

get_on_condition_blocks() → List[ASTOnConditionBlock]

get_on_receive_block(port_name: str) → ASTOnReceiveBlock | None

get_on_receive_blocks() → List[ASTOnReceiveBlock]

get_output_blocks() → List[ASTOutputBlock]: Returns a list of all output-blocks defined. :return: a list of defined output-blocks.

get_parameter_invariants(): Returns a list of all invariants of all parameters. :return: a list of rhs representing invariants :rtype: list(ASTExpression)

get_parameter_symbols(): Returns a list of all parameter symbol defined in the model. :return: a list of parameter symbols. :rtype: list(VariableSymbol)

get_parameter_variables() → List[ASTVariable]: Returns a list of all parameters. :return:

get_parameters_blocks() → List[ASTBlockWithVariables]: Returns a list of all parameter blocks defined in this body. :return: a list of parameters-blocks.

get_spike_buffers(): Returns a list of all spike input buffers defined in the model. :return: a list of all spike input buffers. :rtype: list(VariableSymbol)

get_spike_input_port_names() → List[str]: Returns a list of all spike input ports defined in the model.

get_spike_input_ports() → List[VariableSymbol]: Returns a list of all spike input ports defined in the model.

get_state_blocks() → List[ASTBlockWithVariables]: Returns a list of all state blocks defined in this body. :return: a list of state-blocks.

get_state_declarations(): Returns a list of initial values declarations made in this neuron. :return: a list of initial values declarations :rtype: list(ASTDeclaration)

get_state_symbols() → List[VariableSymbol]: Returns a list of all state symbol defined in the model. :return: a list of state symbols.

get_state_symbols_without_ode(): Returns a list of all elements which have been defined in the state block. :return: a list of of state variable symbols. :rtype: list(VariableSymbol)

get_state_variables() → List[ASTVariable]: Returns a list of all state variables. :return:

get_update_blocks() → List[ASTUpdateBlock]: Returns a list of all update blocks defined in this body. :return: a list of update-block elements.

get_vector_state_symbols() → List[VariableSymbol]: Returns a list of all state symbols that are vectors :return: a list of vector state symbols

get_vector_symbols() → List[VariableSymbol]: Returns a list of all the vector variables declared in State, Parameters, and Internals block :return: a list of vector symbols

has_delay_variables() → bool: This method indicates if the neuron has variables with a delay parameter. :return: True if variables with delay parameter exist, False otherwise.

has_state_vectors() → bool: This method indicates if the neuron has variables defined as vectors. :return: True if vectors are defined, false otherwise.

has_vector_port() → bool: This method indicates whether this neuron contains input ports defined vector-wise. :return: True if vector ports defined, otherwise False.

is_array_buffer(): This method indicates whether this neuron uses buffers defined vector-wise. :return: True if vector buffers defined, otherwise False. :rtype: bool

is_multisynapse_spikes() → bool: Returns whether this neuron uses multi-synapse inputs. :return: True if multi-synaptic, otherwise False.

print_comment(prefix: str = '') → str: Prints the header comment of this neuron. :param prefix: a prefix string :return: the comment.

remove_equations_block() → None: Deletes all equations blocks. By construction as checked through cocos there is only one there.

set_default_delay(var, expr, dtype)

set_name(name): Set the name of the model.

pynestml.meta_model.ast_model_body module

class pynestml.meta_model.ast_model_body.ASTModelBody(body_elements, *args, **kwargs)

Bases: ASTNode

This class is used to store the body of a neuron or synapse, an object containing all the definitions. ASTModelBody The body of the neuron, e.g. internal, state, parameter… Grammar:

bodyBLOCK_OPEN
(NEWLINE | blockWithVariables | updateBlock | equationsBlock | inputBlock | outputBlock | function)* BLOCK_CLOSE;

body_elements = None

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTModelBody

equals(other: ASTNode) → bool: The equality method.

get_body_elements(): Returns the list of body elements. :return: a list of body elements. :rtype: list()

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_equations_blocks() → List[ASTEquationsBlock]: Returns a list of all equations blocks defined in this body. :return: a list of equations-blocks.

get_functions(): Returns a list of all function block declarations in this body. :return: a list of function declarations. :rtype: list(ASTFunction)

get_input_blocks() → List[ASTInputBlock]: Returns a list of all input-blocks defined. :return: a list of defined input-blocks.

get_internals_blocks() → List[ASTBlockWithVariables]: Returns a list of all internals blocks defined in this body. :return: a list of internals-blocks. :rtype: list(ASTBlockWithVariables)

get_on_condition_blocks() → List[ASTOnConditionBlock]

get_on_receive_block(port_name) → ASTOnReceiveBlock | None

get_on_receive_blocks() → List[ASTOnReceiveBlock]: Returned blocks are sorted descending, from high priority to low priority, if priority options were specified.

get_output_blocks() → List[ASTOutputBlock]: Returns a list of all output-blocks defined. :return: a list of defined output-blocks. :rtype: list(ASTOutputBlock)

get_parameters_blocks() → List[ASTBlockWithVariables]: Returns a list of all parameter blocks defined in this body. :return: a list of parameters-blocks.

get_spike_input_ports() → List[ASTInputPort]: Returns a list of all spike input ports defined in the model. :return: a list of all spike input ports

get_state_blocks() → List[ASTBlockWithVariables]: Returns a list of all state blocks defined in this body. :return: a list of state-blocks.

get_update_blocks() → List[ASTUpdateBlock]: Returns a list of all update blocks defined in this body. :return: a list of update-block elements.

pynestml.meta_model.ast_namespace_decorator module

class pynestml.meta_model.ast_namespace_decorator.ASTNamespaceDecorator(namespace: str = '', name: str = '', *args, **kwargs)

Bases: ASTNode

Namespace decorator, for example “@nest::delay”.

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_name() → str: Returns the right-hand side rhs. :return: rhs object.

get_namespace() → str: Returns the left-hand side variable. :return: left-hand side variable object.

pynestml.meta_model.ast_nestml_compilation_unit module

class pynestml.meta_model.ast_nestml_compilation_unit.ASTNestMLCompilationUnit(model_list: List[ASTModel] | None = None, artifact_name=None, *args, **kwargs)

Bases: ASTNode

Store a collection of processed ASTModels.

add_model(model: ASTModel): Expects an instance of a model which is added to the collection. :param neuron: an instance of a model

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTNestMLCompilationUnit

delete_model(model: ASTModel) → bool: Expects an instance of a model which is deleted from the collection. :param model: an instance :return: True if element deleted from list, False else.

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_model_by_name(name: str) → ASTModel | None

get_model_list()

Returns:: a list of neuron elements as stored in the unit
Return type:: list(ASTModel)

pynestml.meta_model.ast_node module

Bases: object

This class is not a part of the grammar but is used to store commonalities of all possible meta_model classes, e.g., the source position.

This class is abstract, thus no instances can be created.

source_position = None

scope = None

comment = None

#

pre_comments = list()

in_comment = None

#

implicit_conversion_factor = None

accept(visitor): Double dispatch for visitor pattern. :param visitor: A visitor. :type visitor: Inherited from ASTVisitor.

abstract clone(): Return a deep copy of this node.

abstract equals(other: ASTNode) → bool: The equals operation. :param other: a different AST node. :return: True if equal, otherwise False.

abstract get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_comment(): Returns the comment of this element. :return: a comment. :rtype: str

get_comments()

get_implicit_conversion_factor() → float | None: Returns the factor installed as implicitConversionFactor for this expression :return: the conversion factor, if present, or None

get_parent() → ASTNode | None: Get the parent of this node. :return: The parent node

get_scope(): Returns the scope of this element. :return: a scope object. :rtype: Scope

get_source_position(): Returns the source position of the element. :return: a source position object. :rtype: ASTSourceLocation

has_comment(): Indicates whether this element stores a comment. :return: True if has comment, otherwise False. :rtype: bool

print_comment(prefix: str = '') → str: Prints the comment of this meta_model element. :param prefix: a prefix string :return: a comment

set_comment(comment): Updates the comment of this element. :param comment: a comment :type comment: str

set_implicit_conversion_factor(implicit_factor: float | None) → None: Sets a factor that, when applied to the (unit-typed) expression, converts it to the magnitude of the context where it is used. eg. Volt + milliVolt needs to either be 1000*Volt + milliVolt or Volt + 0.001 * milliVolt :param implicit_factor: the factor to be installed

set_source_position(new_position): Updates the source position of the element. :param new_position: a new source position :type new_position: ASTSourceLocation :return: a source position object. :rtype: ASTSourceLocation

update_scope(_scope): Updates the scope of this element. :param _scope: a scope object. :type _scope: Scope

pynestml.meta_model.ast_node_factory module

class pynestml.meta_model.ast_node_factory.ASTNodeFactory

Bases: object

An implementation of the factory pattern for an easier initialization of new AST nodes.

classmethod create_ast_arithmetic_operator(is_times_op: bool = False, is_div_op: bool = False, is_modulo_op: bool = False, is_plus_op: bool = False, is_minus_op: bool = False, is_pow_op: bool = False, source_position: ASTSourceLocation | None = None) → ASTArithmeticOperator

classmethod create_ast_assignment(lhs: ASTVariable = None, is_direct_assignment: bool = False, is_compound_sum: bool = False, is_compound_minus: bool = False, is_compound_product: bool = False, is_compound_quotient: bool = False, expression: Union(ASTSimpleExpression, ASTExpression) = None, source_position: ASTSourceLocation = None) → ASTAssignment

classmethod create_ast_bit_operator(is_bit_and: bool = False, is_bit_xor: bool = False, is_bit_or: bool = False, is_bit_shift_left: bool = False, is_bit_shift_right: bool = False, source_position: ASTSourceLocation | None = None) → ASTBitOperator

classmethod create_ast_block_with_variables(is_state: bool = False, is_parameters: bool = False, is_internals: bool = False, declarations: bool = None, source_position: list(ASTDeclaration) = None) → ASTBlockWithVariables

classmethod create_ast_comparison_operator(is_lt: bool = False, is_le: bool = False, is_eq: bool = False, is_ne: bool = False, is_ne2: bool = False, is_ge: bool = False, is_gt: bool = False, source_position: ASTSourceLocation | None = None) → ASTComparisonOperator

classmethod create_ast_compound_expression(lhs: Union(ASTExpression, ASTSimpleExpression), binary_operator: Union(ASTLogicalOperator, ASTBitOperator, ASTComparisonOperator, ASTArithmeticOperator), rhs: Union(ASTExpression, ASTSimpleExpression), source_position: ASTSourceLocation) → ASTExpression: The factory method used to create compound expressions, e.g. 10mV + V_m.

classmethod create_ast_compound_stmt(if_stmt: ASTIfStmt, while_stmt: ASTWhileStmt, for_stmt: ASTForStmt, source_position: ASTSourceLocation) → ASTCompoundStmt

classmethod create_ast_data_type(is_integer: bool = False, is_real: bool = False, is_string: bool = False, is_boolean: bool = False, is_void: bool = False, is_unit_type: ASTUnitType | None = None, source_position: ASTSourceLocation | None = None) → ASTDataType

classmethod create_ast_declaration(is_recordable: bool = False, is_inline_expression: bool = False, variables=None, data_type=None, size_parameter=None, expression=None, invariant=None, source_position=None, decorators=None) → ASTDeclaration

classmethod create_ast_elif_clause(condition: ASTExpression | ASTSimpleExpression, block: ASTStmtsBody, source_position: ASTSourceLocation = None) → ASTElifClause

classmethod create_ast_else_clause(block: ASTStmtsBody, source_position: ASTSourceLocation) → ASTElseClause

classmethod create_ast_equations_block(declarations: list | None = None, source_position: ASTSourceLocation | None = None) → ASTEquationsBlock

classmethod create_ast_expression(is_encapsulated: bool = False, unary_operator: ASTUnaryOperator = None, is_logical_not: bool = False, expression: ASTExpression | ASTSimpleExpression = None, source_position: ASTSourceLocation = None) → ASTExpression: The factory method used to create rhs which are either encapsulated in parentheses (e.g., (10mV)) OR have a unary (e.g., ~bitVar), OR are negated (e.g., not logVar), or are simple rhs (e.g., 10mV).

classmethod create_ast_for_stmt(variable: str, start_from: Union(ASTSimpleExpression, ASTExpression), end_at: Union(ASTSimpleExpression, ASTExpression), step: float = 0, block: ASTStmtsBody = None, source_position: ASTSourceLocation = None) → ASTForStmt

classmethod create_ast_function(name: str, parameters: None | list(ASTParameter), return_type: ASTDataType | None, block: ASTStmtsBody, source_position: ASTSourceLocation) → ASTFunction

classmethod create_ast_function_call(callee_name: str, args: None | list(ASTExpression | ASTSimpleExpression), source_position: ASTSourceLocation = None) → ASTFunctionCall

classmethod create_ast_if_clause(condition: ASTSimpleExpression | ASTExpression, block: ASTStmtsBody, source_position: ASTSourceLocation) → ASTIfClause

classmethod create_ast_if_stmt(if_clause: ASTIfClause, elif_clauses: None | list(ASTElifClause), else_clause: None | ASTElseClause, source_position: ASTSourceLocation) → ASTIfStmt

classmethod create_ast_inline_expression(variable_name: str, data_type: ASTDataType, expression: ASTExpression | ASTSimpleExpression, source_position: ASTSourceLocation, is_recordable: bool = False, decorators: list | None = None) → ASTInlineExpression

classmethod create_ast_input_block(input_definitions: list(ASTInputPort), source_position: ASTSourceLocation) → ASTInputBlock

classmethod create_ast_input_port(name: str, size_parameter: str, data_type: ASTDataType | None, signal_type: PortSignalType | None, source_position: ASTSourceLocation) → ASTInputPort

classmethod create_ast_kernel(variables=None, expressions=None, source_position=None) → ASTKernel

classmethod create_ast_logical_operator(is_logical_and: bool = False, is_logical_or: bool = False, source_position: ASTSourceLocation | None = None) → ASTLogicalOperator

classmethod create_ast_model(name: str, body: ASTModelBody, source_position: ASTSourceLocation, artifact_name: str) → ASTModel

classmethod create_ast_model_body(body_elements: list, source_position: ASTSourceLocation) → ASTModelBody

classmethod create_ast_namespace_decorator(namespace=None, name=None, source_position=None)

classmethod create_ast_nestml_compilation_unit(list_of_models, source_position: ASTSourceLocation, artifact_name: str) → ASTNestMLCompilationUnit

classmethod create_ast_ode_equation(lhs: ASTVariable, rhs: ASTSimpleExpression | ASTExpression, source_position: ASTSourceLocation, decorators: List | None = None) → ASTOdeEquation

classmethod create_ast_on_condition_block(block=None, cond_expr=None, const_parameters=None, source_position=None)

classmethod create_ast_on_receive_block(input_port_variable: ASTInputPort, block=None, const_parameters=None, source_position=None)

classmethod create_ast_output_block(s_type: PortSignalType, source_position: ASTSourceLocation | None = None) → ASTOutputBlock

classmethod create_ast_parameter(name: str, data_type: ASTDataType, source_position: ASTSourceLocation) → ASTParameter

classmethod create_ast_return_stmt(expression: ASTSimpleExpression | ASTExpression = None, source_position: ASTSourceLocation = None) → ASTReturnStmt

classmethod create_ast_simple_expression(function_call: Union(ASTFunctionCall, None) = None, boolean_literal: Union(bool, None) = None, numeric_literal: Union(float, int) = None, is_inf: bool = False, variable: ASTVariable = None, string: Union(str, None) = None, source_position: ASTSourceLocation = None) → ASTSimpleExpression

classmethod create_ast_small_stmt(assignment: ASTAssignment | None = None, function_call: ASTFunctionCall | None = None, declaration: ASTDeclaration | None = None, return_stmt: ASTReturnStmt | None = None, source_position: ASTSourceLocation | None = None) → ASTSmallStmt

classmethod create_ast_stmt(small_stmt: ASTSmallStmt | None = None, compound_stmt: ASTCompoundStmt | None = None, source_position: ASTSourceLocation | None = None) → ASTStmt

classmethod create_ast_stmts_body(stmts: list(ASTSmallStmt | ASTCompoundStmt), source_position: ASTSourceLocation) → ASTStmtsBody

classmethod create_ast_ternary_expression(condition: Union(ASTSimpleExpression, ASTExpression), if_true: Union(ASTSimpleExpression, ASTExpression), if_not: Union(ASTSimpleExpression, ASTExpression), source_position: ASTSourceLocation) → ASTExpression: The factory method used to create a ternary operator rhs, e.g., 10mV<V_m?10mV:V_m

classmethod create_ast_unary_operator(is_unary_plus: bool = False, is_unary_minus: bool = False, is_unary_tilde: bool = False, source_position: ASTSourceLocation | None = None) → ASTUnaryOperator

classmethod create_ast_unit_type(is_encapsulated: bool = False, compound_unit: ASTUnitType | None = None, base: ASTUnitType | None = None, is_pow: bool = False, exponent: int | float | None = None, exponent_num: int | None = None, exponent_den: int | None = None, lhs: ASTUnitType | int | None = None, rhs: ASTUnitType | int | None = None, is_div: bool = False, is_times: bool = False, unit: str | None = None, source_position: ASTSourceLocation | None = None) → ASTUnitType

classmethod create_ast_update_block(block: ASTStmtsBody, source_position: ASTSourceLocation) → ASTUpdateBlock

classmethod create_ast_variable(name: str, differential_order: int = 0, vector_parameter=None, is_homogeneous=False, source_position: ASTSourceLocation | None = None, scope: Scope | None = None) → ASTVariable

classmethod create_ast_while_stmt(condition: Union(ASTSimpleExpression, ASTExpression), block: ASTStmtsBody, source_position: ASTSourceLocation) → ASTWhileStmt

pynestml.meta_model.ast_ode_equation module

class pynestml.meta_model.ast_ode_equation.ASTOdeEquation(lhs, rhs, decorators=None, *args, **kwargs)

Bases: ASTNode

This class is used to store meta_model equations, e.g., V_m’ = 10mV + V_m. ASTOdeEquation Represents an equation, e.g. “I = exp(t)” or represents an differential equations,

e.g. “V_m’ = V_m+1”.

@attribute lhs Left hand side, e.g. a Variable. @attribute rhs Expression defining the right hand side. Grammar:

odeEquation : lhs=variable “=” rhs=rhs;

lhs = None

rhs = None

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTOdeEquation

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_decorators()

get_lhs(): Returns the left-hand side of the equation. :return: an object of the meta_model-variable class. :rtype: ASTVariable

get_rhs(): Returns the left-hand side of the equation. :return: an object of the meta_model-expr class. :rtype: Union[ASTExpression, ASTSimpleExpression]

pynestml.meta_model.ast_on_condition_block module

class pynestml.meta_model.ast_on_condition_block.ASTOnConditionBlock(stmts_body: ASTStmtsBody, cond_expr: ASTExpression, const_parameters: Mapping | None = None, *args, **kwargs)

Bases: ASTNode

This class is used to store a declaration of an onCondition block

clone() → ASTOnConditionBlock

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_cond_expr() → str: Returns the conditional expression :return: the conditional expression

get_const_parameters()

get_stmts_body() → ASTStmtsBody: Returns the body of statements. :return: the body of statements

pynestml.meta_model.ast_on_receive_block module

class pynestml.meta_model.ast_on_receive_block.ASTOnReceiveBlock(input_port_variable: ASTVariable, stmts_body: ASTStmtsBody, const_parameters: Mapping | None = None, *args, **kwargs)

Bases: ASTNode

This class is used to store a declaration of an onReceive block.

clone() → ASTOnReceiveBlock

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_const_parameters()

get_input_port_variable() → ASTVariable: Returns the port. :return: the port

get_stmts_body() → ASTStmtsBody: Returns the body of statements. :return: the body of statements

pynestml.meta_model.ast_output_block module

class pynestml.meta_model.ast_output_block.ASTOutputBlock(o_type, *args, **kwargs)

Bases: ASTNode

This class is used to store output port declarations. ASTOutput represents the output block of the neuron:

output:
spike

@attribute spike true if and only if the neuron has a spike output. @attribute continuous true if and only if the neuron has a continuous time output.

Grammar:: outputBlock: “output” BLOCK_OPEN (“spike” | “continuous”) ;

type = None

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTOutputBlock

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

is_continuous() → bool: Returns whether it is a continuous time type or not. :return: True if continuous time, otherwise False.

is_spike() → bool: Returns whether it is a spike type port or not. :return: True if spike, otherwise False.

pynestml.meta_model.ast_parameter module

class pynestml.meta_model.ast_parameter.ASTParameter(name: str, data_type: ASTDataType, *args, **kwargs)

Bases: ASTNode

This class is used to store a single function parameter definition.

Grammar:: parameter : NAME datatype;

name

The name of the parameter.

Type:: str

data_type

The data type of the parameter.

Type:: ASTDataType

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTParameter

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_data_type(): Returns the data type of the parameter. :return: the data type of the parameter. :rtype: ASTDataType

get_name(): Returns the name of the parameter. :return: the name of the parameter. :rtype: str

pynestml.meta_model.ast_return_stmt module

class pynestml.meta_model.ast_return_stmt.ASTReturnStmt(expression=None, *args, **kwargs)

Bases: ASTNode

This class is used to store a return statement.: A ReturnStmt Models the return statement in a function. @attribute minus An optional sing @attribute definingVariable Name of the variable Grammar:

returnStmt : “return” expr?;

expression

An rhs representing the returned value.

Type:: ASTSimpleExpression or ASTExpression

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTReturnStmt

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_expression(): Returns the rhs. :return: an rhs. :rtype: ASTExpression

has_expression(): Returns whether the return statement has an rhs or not. :return: True if has rhs, otherwise False. :rtype: bool

pynestml.meta_model.ast_simple_expression module

class pynestml.meta_model.ast_simple_expression.ASTSimpleExpression(function_call: ASTFunctionCall | None = None, boolean_literal: bool | None = None, numeric_literal: int | float | None = None, is_inf: bool = False, variable: ASTVariable | None = None, string: str | None = None, has_delay: bool = False, *args, **kwargs)

Bases: ASTExpressionNode

This class is used to store a simple rhs, e.g. +42mV. ASTSimpleExpression, consisting of a single element without combining operator, e.g.,10mV, inf, V_m. Grammar: simpleExpression : functionCall

BOOLEAN_LITERAL // true & false ;

(UNSIGNED_INTEGER | FLOAT) (variable)?

isInf=”inf”

STRING_LITERAL

variable;

function_call: A function call reference.

numeric_literal: A numeric literal.

variable: A variable reference.

is_boolean_true

True if this is a boolean true literal.

Type:: bool

is_boolean_false

True if this is a boolean false literal.

Type:: bool

is_inf_literal

True if this is a infinity literal.

Type:: bool

string

A string literal.

Type:: str

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTSimpleExpression

equals(other: ASTNode) → bool: The equality method.

get_boolean_literal() → bool | None: Returns boolean literal if available, otherwise None. :return: boolean literal if ASTSimpleExpression is boolean literal, otherwise None

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_function_call(): Returns the function call object. :return: the function call object. :rtype: ASTFunctionCall

get_function_calls(): This function is used for better interactions with the general rhs meta_model class. :return: returns a single list with this function call if such an exists, otherwise an empty list :rtype: list(ASTFunctionCall)

get_has_delay(): Returns the has_delay parameter :return: returns the value of has_delay parameter

get_numeric_literal() → int | float: Returns the value of the numeric literal. :return: the value of the numeric literal. :rtype: int/float

get_string(): Returns the string as stored in this simple rhs. :return: a string as stored in this rhs. :rtype: str

get_units(): This function is used for better interactions with the general rhs meta_model class. :return: returns a single list with unit if such an exists, otherwise an empty list :rtype: list(ASTVariable)

get_variable(): Returns the variable. :return: the variable object. :rtype: ASTVariable

get_variables(): This function is used for better interactions with the general rhs meta_model class. :return: returns a single list with this variable if such an exists, otherwise an empty list :rtype: list(ASTVariable)

has_unit(): Returns whether this is a numeric literal with a defined unit. :return: True if numeric literal with unit, otherwise False. :rtype: bool

is_delay_variable(): Returns whether it is a delay variable or not :return: True if the variable has a delay parameter, False otherwise

is_function_call(): Returns whether it is a function call or not. :return: True if function call, otherwise False. :rtype: bool

is_numeric_literal(): Returns whether it is a numeric literal or not. :return: True if numeric literal, otherwise False. :rtype: bool

is_string(): Returns whether this simple rhs is a string. :return: True if string, False otherwise. :rtype: bool

is_variable(): Returns whether it is a variable or not. :return: True if has a variable, otherwise False. :rtype: bool

set_function_call(function_call): Updates the function call of this node. :param function_call: a single function call :type function_call: Union(ASTFunctionCall,None)

set_numeric_literal(numeric_literal): Updates the numeric literal attribute of this node. :param numeric_literal: a single numeric literal :type numeric_literal: int or float

set_variable(variable): Updates the variable of this node. :param variable: a single variable :type variable: ASTVariable

pynestml.meta_model.ast_small_stmt module

class pynestml.meta_model.ast_small_stmt.ASTSmallStmt(assignment=None, function_call=None, declaration=None, return_stmt=None, *args, **kwargs)

Bases: ASTNode

This class is used to store small statements, e.g., a declaration. Grammar:

smallStmtassignment

functionCall

declaration

returnStmt;

assignment

A assignment reference.

Type:: ast_assignment

function_call

A function call reference.

Type:: ast_function_call

declaration

A declaration reference.

Type:: ast_declaration

return_stmt

A reference to the returns statement.

Type:: ast_return_stmt

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTSmallStmt

equals(other: ASTNode) → bool: The equality method.

get_assignment(): Returns the assignment. :return: the assignment statement. :rtype: ast_assignment

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_declaration(): Returns the assignment. :return: the declaration statement. :rtype: ast_declaration

get_function_call(): Returns the function call. :return: the function call statement. :rtype: ast_function_call

get_return_stmt(): Returns the return statement. :return: the return statement. :rtype: ast_return_stmt

is_assignment(): Returns whether it is an assignment statement or not. :return: True if assignment, False else. :rtype: bool

is_declaration(): Returns whether it is a declaration statement or not. :return: True if declaration, False else. :rtype: bool

is_function_call(): Returns whether it is an function call or not. :return: True if function call, False else. :rtype: bool

is_return_stmt(): Returns whether it is a return statement or not. :return: True if return stmt, False else. :rtype: bool

pynestml.meta_model.ast_stmt module

class pynestml.meta_model.ast_stmt.ASTStmt(small_stmt, compound_stmt, *args, **kwargs)

Bases: ASTNode

Stores a reference to either small or compound statement. Grammar:

stmt : smallStmt | compoundStmt;

small_stmt = None

compound_stmt = None

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTStmt

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

is_compound_stmt()

is_small_stmt()

pynestml.meta_model.ast_stmts_body module

class pynestml.meta_model.ast_stmts_body.ASTStmtsBody(stmts, *args, **kwargs)

Bases: ASTNode

This class is used to store a single block of declarations, i.e., statements. Grammar:

block : ( smallStmt | compoundStmt | NEWLINE )*;

Attribute:: stmts = None

add_stmt(stmt): Adds a single statement to the list of statements. :param stmt: a statement :type stmt: ASTSmallStmt,ASTCompoundStmt

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTBlock

delete_stmt(stmt): Deletes the handed over statement. :param stmt: :type stmt: :return: True if deleted, otherwise False. :rtype: bool

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_stmts(): Returns the list of statements. :return: list of stmts. :rtype: list(ASTSmallStmt/ASTCompoundStmt)

pynestml.meta_model.ast_unary_operator module

class pynestml.meta_model.ast_unary_operator.ASTUnaryOperator(is_unary_plus=False, is_unary_minus=False, is_unary_tilde=False, *args, **kwargs)

Bases: ASTNode

This class is used to store a single unary operator, e.g., ~. Grammar:

unaryOperator : (unaryPlus=”+” | unaryMinus=”-” | unaryTilde=”~”);

is_unary_plus = False

is_unary_minus = False

is_unary_tilde = False

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTUnaryOperator

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

pynestml.meta_model.ast_unit_type module

Bases: ASTNode

This class stores information regarding unit types and their properties. ASTUnitType. Represents an unit datatype. It can be a plain datatype as “mV” or a complex data type as “mV/s”

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTAssignment

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_lhs(): Returns the left-hand side rhs if present. :return: ASTUnitType instance if present, otherwise None. :rtype: ASTUnitType

get_rhs(): Returns the right-hand side rhs if present. :return: ASTUnitType instance if present, otherwise None. :rtype: ASTUnitType

get_type_symbol()

is_arithmetic_expression(): Returns whether the rhs is a arithmetic combination, e.g, mV/mS. :return: True if arithmetic rhs, otherwise false. :rtype: bool

is_simple_unit(): Returns whether the rhs is a simple unit, e.g., mV. :return: True if simple unit, otherwise False. :rtype: bool

set_type_symbol(type_symbol)

pynestml.meta_model.ast_update_block module

class pynestml.meta_model.ast_update_block.ASTUpdateBlock(stmts_body: ASTStmtsBody, *args, **kwargs)

Bases: ASTNode

The update block in the model.

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTUpdateBlock

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_stmts_body() → ASTStmtsBody: Returns the body of statements. :return: the statements body

pynestml.meta_model.ast_variable module

class pynestml.meta_model.ast_variable.ASTVariable(name, differential_order=0, type_symbol: str | None = None, vector_parameter: str | ASTParameter | None = None, is_homogeneous: bool = False, delay_parameter: str | None = None, *args, **kwargs)

Bases: ASTNode

This class is used to store a single variable.

ASTVariable Provides a “marker” AST node to identify variables used in expressions. Grammar:

variable : NAME (differentialOrder=”’”)*;

name = None

differential_order = None

# the corresponding type symbol

type_symbol = None

clone(): Return a clone (“deep copy”) of this node.

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_complete_name() → str: Returns the complete name, consisting of the name and the differential order. :return: the complete name.

get_delay_parameter(): Returns the delay parameter :return: delay parameter

get_differential_order() → int: Returns the differential order of the variable. :return: the differential order.

get_is_homogeneous() → bool

get_name() → str: Returns the name of the variable. :return: the name of the variable.

get_name_of_lhs() → str: Returns the complete name but with differential order reduced by one. :return: the name.

get_type_symbol() → TypeSymbol: Returns the type symbol of this rhs. :return: a single type symbol.

get_vector_parameter() → str: Returns the vector parameter of the variable :return: the vector parameter

has_vector_parameter() → bool: Returns the vector parameter of the variable :return: the vector parameter

is_delay_variable() → bool: Returns whether it is a delay variable or not :return: True if the variable has a delay parameter, False otherwise

is_unit_variable() → bool: Provided on-the-fly information whether this variable represents a unit-variable, e.g., nS. Caution: It assumes that the symbol table has already been constructed. :return: True if unit-variable, otherwise False.

resolve_in_own_scope()

set_delay_parameter(delay: str): Updates the current delay parameter to the handed over value :param delay: delay parameter

set_differential_order(differential_order: int) → None: Returns the differential order of the variable.

set_name(name: str) → None: Sets the name of the variable. :name: the name to set.

set_type_symbol(type_symbol: TypeSymbol): Updates the current type symbol to the handed over one. :param type_symbol: a single type symbol object.

set_vector_parameter(vector_parameter): Updates the vector parameter of the variable

pynestml.meta_model.ast_while_stmt module

class pynestml.meta_model.ast_while_stmt.ASTWhileStmt(condition: ASTExpression, stmts_body: ASTStmtsBody, *args, **kwargs)

Bases: ASTNode

This class is used to store a new while-block. Grammar:

whileStmt : “while” expr BLOCK_OPEN block BLOCK_CLOSE;

condition = None

block = None

clone()

Return a clone (“deep copy”) of this node.

Returns:: new AST node instance
Return type:: ASTWhileStmt

equals(other: ASTNode) → bool: The equality method.

get_children() → List[ASTNode]: Returns the children of this node, if any. :return: List of children of this node.

get_condition(): Returns the condition of the block. :return: the condition. :rtype: ASTExpression

get_stmts_body() → ASTStmtsBody: Returns the body of statements. :return: the body of statements.