Helper visitor to gather AST information to help code generation. More...

#include <codegen_helper_visitor.hpp>

Inheritance diagram for nmodl::codegen::CodegenHelperVisitor:

Public Member Functions
	CodegenHelperVisitor (bool enable_cvode=false)

codegen::CodegenInfo	analyze (const ast::Program &node)
	run visitor and return information for code generation More...

void	visit_electrode_current (const ast::ElectrodeCurrent &node) override
	visit node of type ast::ElectrodeCurrent More...

void	visit_suffix (const ast::Suffix &node) override
	visit node of type ast::Suffix More...

void	visit_function_call (const ast::FunctionCall &node) override
	visit node of type ast::FunctionCall More...

void	visit_binary_expression (const ast::BinaryExpression &node) override
	visit node of type ast::BinaryExpression More...

void	visit_conductance_hint (const ast::ConductanceHint &node) override
	visit node of type ast::ConductanceHint More...

void	visit_procedure_block (const ast::ProcedureBlock &node) override
	visit node of type ast::ProcedureBlock More...

void	visit_function_block (const ast::FunctionBlock &node) override
	visit node of type ast::FunctionBlock More...

void	visit_function_table_block (const ast::FunctionTableBlock &node) override
	visit node of type ast::FunctionTableBlock More...

void	visit_eigen_newton_solver_block (const ast::EigenNewtonSolverBlock &node) override
	visit node of type ast::EigenNewtonSolverBlock More...

void	visit_eigen_linear_solver_block (const ast::EigenLinearSolverBlock &node) override
	visit node of type ast::EigenLinearSolverBlock More...

void	visit_statement_block (const ast::StatementBlock &node) override
	Visit statement block and find prime symbols appear in derivative block. More...

void	visit_initial_block (const ast::InitialBlock &node) override
	visit node of type ast::InitialBlock More...

void	visit_constructor_block (const ast::ConstructorBlock &node) override
	visit node of type ast::ConstructorBlock More...

void	visit_destructor_block (const ast::DestructorBlock &node) override
	visit node of type ast::DestructorBlock More...

void	visit_breakpoint_block (const ast::BreakpointBlock &node) override
	visit node of type ast::BreakpointBlock More...

void	visit_derivative_block (const ast::DerivativeBlock &node) override
	visit node of type ast::DerivativeBlock More...

void	visit_derivimplicit_callback (const ast::DerivimplicitCallback &node) override
	visit node of type ast::DerivimplicitCallback More...

void	visit_net_receive_block (const ast::NetReceiveBlock &node) override
	visit node of type ast::NetReceiveBlock More...

void	visit_bbcore_pointer (const ast::BbcorePointer &node) override
	visit node of type ast::BbcorePointer More...

void	visit_thread_safe (const ast::ThreadSafe &) override
	visit node of type ast::ThreadSafe More...

void	visit_watch (const ast::Watch &node) override
	visit node of type ast::Watch More...

void	visit_watch_statement (const ast::WatchStatement &node) override
	visit node of type ast::WatchStatement More...

void	visit_for_netcon (const ast::ForNetcon &node) override
	visit node of type ast::ForNetcon More...

void	visit_table_statement (const ast::TableStatement &node) override
	visit node of type ast::TableStatement More...

void	visit_program (const ast::Program &node) override
	visit node of type ast::Program More...

void	visit_factor_def (const ast::FactorDef &node) override
	visit node of type ast::FactorDef More...

void	visit_nrn_state_block (const ast::NrnStateBlock &node) override
	visit node of type ast::NrnStateBlock More...

void	visit_cvode_block (const ast::CvodeBlock &node) override
	visit node of type ast::CvodeBlock More...

void	visit_linear_block (const ast::LinearBlock &node) override
	visit node of type ast::LinearBlock More...

void	visit_non_linear_block (const ast::NonLinearBlock &node) override
	visit node of type ast::NonLinearBlock More...

void	visit_discrete_block (const ast::DiscreteBlock &node) override
	visit node of type ast::DiscreteBlock More...

void	visit_update_dt (const ast::UpdateDt &node) override
	visit node of type ast::UpdateDt More...

void	visit_verbatim (const ast::Verbatim &node) override
	visit verbatim block and find all symbols used More...

void	visit_before_block (const ast::BeforeBlock &node) override
	visit node of type ast::BeforeBlock More...

void	visit_after_block (const ast::AfterBlock &node) override
	visit node of type ast::AfterBlock More...

void	visit_longitudinal_diffusion_block (const ast::LongitudinalDiffusionBlock &node) override
	visit node of type ast::LongitudinalDiffusionBlock More...

Public Member Functions inherited from nmodl::visitor::ConstAstVisitor
void	visit_node (const ast::Node &node) override
	visit node of type ast::Node More...

void	visit_statement (const ast::Statement &node) override
	visit node of type ast::Statement More...

void	visit_expression (const ast::Expression &node) override
	visit node of type ast::Expression More...

void	visit_block (const ast::Block &node) override
	visit node of type ast::Block More...

void	visit_identifier (const ast::Identifier &node) override
	visit node of type ast::Identifier More...

void	visit_number (const ast::Number &node) override
	visit node of type ast::Number More...

void	visit_string (const ast::String &node) override
	visit node of type ast::String More...

void	visit_integer (const ast::Integer &node) override
	visit node of type ast::Integer More...

void	visit_float (const ast::Float &node) override
	visit node of type ast::Float More...

void	visit_double (const ast::Double &node) override
	visit node of type ast::Double More...

void	visit_boolean (const ast::Boolean &node) override
	visit node of type ast::Boolean More...

void	visit_name (const ast::Name &node) override
	visit node of type ast::Name More...

void	visit_prime_name (const ast::PrimeName &node) override
	visit node of type ast::PrimeName More...

void	visit_indexed_name (const ast::IndexedName &node) override
	visit node of type ast::IndexedName More...

void	visit_var_name (const ast::VarName &node) override
	visit node of type ast::VarName More...

void	visit_argument (const ast::Argument &node) override
	visit node of type ast::Argument More...

void	visit_react_var_name (const ast::ReactVarName &node) override
	visit node of type ast::ReactVarName More...

void	visit_read_ion_var (const ast::ReadIonVar &node) override
	visit node of type ast::ReadIonVar More...

void	visit_write_ion_var (const ast::WriteIonVar &node) override
	visit node of type ast::WriteIonVar More...

void	visit_nonspecific_cur_var (const ast::NonspecificCurVar &node) override
	visit node of type ast::NonspecificCurVar More...

void	visit_electrode_cur_var (const ast::ElectrodeCurVar &node) override
	visit node of type ast::ElectrodeCurVar More...

void	visit_range_var (const ast::RangeVar &node) override
	visit node of type ast::RangeVar More...

void	visit_global_var (const ast::GlobalVar &node) override
	visit node of type ast::GlobalVar More...

void	visit_pointer_var (const ast::PointerVar &node) override
	visit node of type ast::PointerVar More...

void	visit_random_var (const ast::RandomVar &node) override
	visit node of type ast::RandomVar More...

void	visit_bbcore_pointer_var (const ast::BbcorePointerVar &node) override
	visit node of type ast::BbcorePointerVar More...

void	visit_extern_var (const ast::ExternVar &node) override
	visit node of type ast::ExternVar More...

void	visit_param_block (const ast::ParamBlock &node) override
	visit node of type ast::ParamBlock More...

void	visit_independent_block (const ast::IndependentBlock &node) override
	visit node of type ast::IndependentBlock More...

void	visit_assigned_block (const ast::AssignedBlock &node) override
	visit node of type ast::AssignedBlock More...

void	visit_state_block (const ast::StateBlock &node) override
	visit node of type ast::StateBlock More...

void	visit_initial_block (const ast::InitialBlock &node) override
	visit node of type ast::InitialBlock More...

void	visit_constructor_block (const ast::ConstructorBlock &node) override
	visit node of type ast::ConstructorBlock More...

void	visit_destructor_block (const ast::DestructorBlock &node) override
	visit node of type ast::DestructorBlock More...

void	visit_statement_block (const ast::StatementBlock &node) override
	visit node of type ast::StatementBlock More...

void	visit_derivative_block (const ast::DerivativeBlock &node) override
	visit node of type ast::DerivativeBlock More...

void	visit_linear_block (const ast::LinearBlock &node) override
	visit node of type ast::LinearBlock More...

void	visit_non_linear_block (const ast::NonLinearBlock &node) override
	visit node of type ast::NonLinearBlock More...

void	visit_discrete_block (const ast::DiscreteBlock &node) override
	visit node of type ast::DiscreteBlock More...

void	visit_function_table_block (const ast::FunctionTableBlock &node) override
	visit node of type ast::FunctionTableBlock More...

void	visit_function_block (const ast::FunctionBlock &node) override
	visit node of type ast::FunctionBlock More...

void	visit_procedure_block (const ast::ProcedureBlock &node) override
	visit node of type ast::ProcedureBlock More...

void	visit_net_receive_block (const ast::NetReceiveBlock &node) override
	visit node of type ast::NetReceiveBlock More...

void	visit_solve_block (const ast::SolveBlock &node) override
	visit node of type ast::SolveBlock More...

void	visit_breakpoint_block (const ast::BreakpointBlock &node) override
	visit node of type ast::BreakpointBlock More...

void	visit_before_block (const ast::BeforeBlock &node) override
	visit node of type ast::BeforeBlock More...

void	visit_after_block (const ast::AfterBlock &node) override
	visit node of type ast::AfterBlock More...

void	visit_ba_block (const ast::BABlock &node) override
	visit node of type ast::BABlock More...

void	visit_for_netcon (const ast::ForNetcon &node) override
	visit node of type ast::ForNetcon More...

void	visit_kinetic_block (const ast::KineticBlock &node) override
	visit node of type ast::KineticBlock More...

void	visit_unit_block (const ast::UnitBlock &node) override
	visit node of type ast::UnitBlock More...

void	visit_constant_block (const ast::ConstantBlock &node) override
	visit node of type ast::ConstantBlock More...

void	visit_neuron_block (const ast::NeuronBlock &node) override
	visit node of type ast::NeuronBlock More...

void	visit_unit (const ast::Unit &node) override
	visit node of type ast::Unit More...

void	visit_double_unit (const ast::DoubleUnit &node) override
	visit node of type ast::DoubleUnit More...

void	visit_local_var (const ast::LocalVar &node) override
	visit node of type ast::LocalVar More...

void	visit_limits (const ast::Limits &node) override
	visit node of type ast::Limits More...

void	visit_number_range (const ast::NumberRange &node) override
	visit node of type ast::NumberRange More...

void	visit_constant_var (const ast::ConstantVar &node) override
	visit node of type ast::ConstantVar More...

void	visit_binary_operator (const ast::BinaryOperator &node) override
	visit node of type ast::BinaryOperator More...

void	visit_unary_operator (const ast::UnaryOperator &node) override
	visit node of type ast::UnaryOperator More...

void	visit_reaction_operator (const ast::ReactionOperator &node) override
	visit node of type ast::ReactionOperator More...

void	visit_paren_expression (const ast::ParenExpression &node) override
	visit node of type ast::ParenExpression More...

void	visit_binary_expression (const ast::BinaryExpression &node) override
	visit node of type ast::BinaryExpression More...

void	visit_diff_eq_expression (const ast::DiffEqExpression &node) override
	visit node of type ast::DiffEqExpression More...

void	visit_unary_expression (const ast::UnaryExpression &node) override
	visit node of type ast::UnaryExpression More...

void	visit_non_lin_equation (const ast::NonLinEquation &node) override
	visit node of type ast::NonLinEquation More...

void	visit_lin_equation (const ast::LinEquation &node) override
	visit node of type ast::LinEquation More...

void	visit_function_call (const ast::FunctionCall &node) override
	visit node of type ast::FunctionCall More...

void	visit_watch (const ast::Watch &node) override
	visit node of type ast::Watch More...

void	visit_ba_block_type (const ast::BABlockType &node) override
	visit node of type ast::BABlockType More...

void	visit_unit_def (const ast::UnitDef &node) override
	visit node of type ast::UnitDef More...

void	visit_factor_def (const ast::FactorDef &node) override
	visit node of type ast::FactorDef More...

void	visit_valence (const ast::Valence &node) override
	visit node of type ast::Valence More...

void	visit_unit_state (const ast::UnitState &node) override
	visit node of type ast::UnitState More...

void	visit_local_list_statement (const ast::LocalListStatement &node) override
	visit node of type ast::LocalListStatement More...

void	visit_model (const ast::Model &node) override
	visit node of type ast::Model More...

void	visit_define (const ast::Define &node) override
	visit node of type ast::Define More...

void	visit_include (const ast::Include &node) override
	visit node of type ast::Include More...

void	visit_param_assign (const ast::ParamAssign &node) override
	visit node of type ast::ParamAssign More...

void	visit_assigned_definition (const ast::AssignedDefinition &node) override
	visit node of type ast::AssignedDefinition More...

void	visit_conductance_hint (const ast::ConductanceHint &node) override
	visit node of type ast::ConductanceHint More...

void	visit_expression_statement (const ast::ExpressionStatement &node) override
	visit node of type ast::ExpressionStatement More...

void	visit_protect_statement (const ast::ProtectStatement &node) override
	visit node of type ast::ProtectStatement More...

void	visit_from_statement (const ast::FromStatement &node) override
	visit node of type ast::FromStatement More...

void	visit_while_statement (const ast::WhileStatement &node) override
	visit node of type ast::WhileStatement More...

void	visit_if_statement (const ast::IfStatement &node) override
	visit node of type ast::IfStatement More...

void	visit_else_if_statement (const ast::ElseIfStatement &node) override
	visit node of type ast::ElseIfStatement More...

void	visit_else_statement (const ast::ElseStatement &node) override
	visit node of type ast::ElseStatement More...

void	visit_watch_statement (const ast::WatchStatement &node) override
	visit node of type ast::WatchStatement More...

void	visit_mutex_lock (const ast::MutexLock &node) override
	visit node of type ast::MutexLock More...

void	visit_mutex_unlock (const ast::MutexUnlock &node) override
	visit node of type ast::MutexUnlock More...

void	visit_conserve (const ast::Conserve &node) override
	visit node of type ast::Conserve More...

void	visit_compartment (const ast::Compartment &node) override
	visit node of type ast::Compartment More...

void	visit_lon_diffuse (const ast::LonDiffuse &node) override
	visit node of type ast::LonDiffuse More...

void	visit_reaction_statement (const ast::ReactionStatement &node) override
	visit node of type ast::ReactionStatement More...

void	visit_lag_statement (const ast::LagStatement &node) override
	visit node of type ast::LagStatement More...

void	visit_constant_statement (const ast::ConstantStatement &node) override
	visit node of type ast::ConstantStatement More...

void	visit_table_statement (const ast::TableStatement &node) override
	visit node of type ast::TableStatement More...

void	visit_suffix (const ast::Suffix &node) override
	visit node of type ast::Suffix More...

void	visit_useion (const ast::Useion &node) override
	visit node of type ast::Useion More...

void	visit_nonspecific (const ast::Nonspecific &node) override
	visit node of type ast::Nonspecific More...

void	visit_electrode_current (const ast::ElectrodeCurrent &node) override
	visit node of type ast::ElectrodeCurrent More...

void	visit_range (const ast::Range &node) override
	visit node of type ast::Range More...

void	visit_global (const ast::Global &node) override
	visit node of type ast::Global More...

void	visit_random_var_list (const ast::RandomVarList &node) override
	visit node of type ast::RandomVarList More...

void	visit_pointer (const ast::Pointer &node) override
	visit node of type ast::Pointer More...

void	visit_bbcore_pointer (const ast::BbcorePointer &node) override
	visit node of type ast::BbcorePointer More...

void	visit_external (const ast::External &node) override
	visit node of type ast::External More...

void	visit_thread_safe (const ast::ThreadSafe &node) override
	visit node of type ast::ThreadSafe More...

void	visit_verbatim (const ast::Verbatim &node) override
	visit node of type ast::Verbatim More...

void	visit_line_comment (const ast::LineComment &node) override
	visit node of type ast::LineComment More...

void	visit_block_comment (const ast::BlockComment &node) override
	visit node of type ast::BlockComment More...

void	visit_ontology_statement (const ast::OntologyStatement &node) override
	visit node of type ast::OntologyStatement More...

void	visit_program (const ast::Program &node) override
	visit node of type ast::Program More...

void	visit_nrn_state_block (const ast::NrnStateBlock &node) override
	visit node of type ast::NrnStateBlock More...

void	visit_eigen_newton_solver_block (const ast::EigenNewtonSolverBlock &node) override
	visit node of type ast::EigenNewtonSolverBlock More...

void	visit_eigen_linear_solver_block (const ast::EigenLinearSolverBlock &node) override
	visit node of type ast::EigenLinearSolverBlock More...

void	visit_cvode_block (const ast::CvodeBlock &node) override
	visit node of type ast::CvodeBlock More...

void	visit_longitudinal_diffusion_block (const ast::LongitudinalDiffusionBlock &node) override
	visit node of type ast::LongitudinalDiffusionBlock More...

void	visit_wrapped_expression (const ast::WrappedExpression &node) override
	visit node of type ast::WrappedExpression More...

void	visit_derivimplicit_callback (const ast::DerivimplicitCallback &node) override
	visit node of type ast::DerivimplicitCallback More...

void	visit_solution_expression (const ast::SolutionExpression &node) override
	visit node of type ast::SolutionExpression More...

void	visit_update_dt (const ast::UpdateDt &node) override
	visit node of type ast::UpdateDt More...

Public Member Functions inherited from nmodl::visitor::ConstVisitor
virtual	~ConstVisitor ()=default

Private Types
using	SymbolType = std::shared_ptr< symtab::Symbol >

using	SymbolVectorType = std::vector< std::shared_ptr< symtab::Symbol > >

Private Member Functions
void	find_ion_variables (const ast::Program &node)
	Find all ions used in mod file. More...

void	find_table_variables ()

void	find_range_variables ()
	Find range variables i.e. More...

void	find_non_range_variables (const ast::Program &node)
	Find non-range variables i.e. More...

void	find_neuron_global_variables ()

void	check_cvode_codegen (const ast::Program &node)
	Find whether or not we need to emit CVODE-related code for NEURON Notes: we generate CVODE-related code if and only if: More...

Static Private Member Functions
static void	sort_with_mod2c_symbol_order (std::vector< SymbolType > &symbols)
	How symbols are stored in NEURON? See notes written in markdown file. More...

Private Attributes
codegen::CodegenInfo	info
	holds all codegen related information More...

bool	enable_cvode
	Config variable for enabling/disabling CVODE, see `emit_cvode`. More...

bool	under_net_receive_block = false
	if visiting net receive block More...

bool	under_derivative_block = false
	if visiting derivative block More...

bool	under_breakpoint_block = false
	if visiting breakpoint block More...

bool	table_statement_used = false
	table statement found More...

symtab::SymbolTable *	psymtab = nullptr
	symbol table for the program More...

std::shared_ptr< ast::Expression >	assign_lhs
	lhs of assignment in derivative block More...

Detailed Description

Helper visitor to gather AST information to help code generation.

Code generation pass needs various information from AST and symbol table. Different code generation backends will need this information. This helper pass visit ast and collect all information into single class object of CodegenInfo.

Todo:

Determine vectorize as part of the pass
Determine threadsafe as part of the pass
Global variable order is not preserved, for example, below gives different order:
- NEURON block: GLOBAL gq, gp
- PARAMETER block: gp = 11, gq[2]
POINTER rng and if it's also assigned rng[4] then it is printed as one value. Need to check what is correct value.

Definition at line 47 of file codegen_helper_visitor.hpp.

Member Typedef Documentation

◆ SymbolType

using nmodl::codegen::CodegenHelperVisitor::SymbolType = std::shared_ptr<symtab::Symbol>

private

Definition at line 48 of file codegen_helper_visitor.hpp.

◆ SymbolVectorType

using nmodl::codegen::CodegenHelperVisitor::SymbolVectorType = std::vector<std::shared_ptr<symtab::Symbol> >

private

Definition at line 49 of file codegen_helper_visitor.hpp.

Constructor & Destructor Documentation

◆ CodegenHelperVisitor()

nmodl::codegen::CodegenHelperVisitor::CodegenHelperVisitor ( bool enable_cvode = false )

inline

Definition at line 84 of file codegen_helper_visitor.hpp.

Member Function Documentation

◆ analyze()

CodegenInfo nmodl::codegen::CodegenHelperVisitor::analyze ( const ast::Program & node )

run visitor and return information for code generation

Definition at line 863 of file codegen_helper_visitor.cpp.

◆ check_cvode_codegen()

void nmodl::codegen::CodegenHelperVisitor::check_cvode_codegen ( const ast::Program & node )

private

Find whether or not we need to emit CVODE-related code for NEURON Notes: we generate CVODE-related code if and only if:

there is exactly ONE block being SOLVEd
the block is one of the following types:
- DERIVATIVE
- KINETIC
- PROCEDURE being solved with the after_cvode, cvode_t, or cvode_t_v methods

Definition at line 185 of file codegen_helper_visitor.cpp.

◆ find_ion_variables()

void nmodl::codegen::CodegenHelperVisitor::find_ion_variables ( const ast::Program & node )

private

Find all ions used in mod file.

Check if given variable belongs to given ion. For example, eca belongs to ca ion, nai belongs to na ion. We just check if we exclude first/last char, if that is ion name.

iterate over all ion types and construct the Ion objects

once ions are populated, we can find all currents

check if write_conc(...) will be needed

Definition at line 89 of file codegen_helper_visitor.cpp.

◆ find_neuron_global_variables()

void nmodl::codegen::CodegenHelperVisitor::find_neuron_global_variables ( )

private

Definition at line 589 of file codegen_helper_visitor.cpp.

◆ find_non_range_variables()

void nmodl::codegen::CodegenHelperVisitor::find_non_range_variables ( const ast::Program & node )

private

Find non-range variables i.e.

ones that are not belong to per instance allocation

Certain variables like pointers, global, parameters are not necessary to be per instance variables. NEURON apply certain rules to determine which variables become thread, static or global variables. Here we construct those variables.

Top local variables are local variables appear in global scope. All local variables in program symbol table are in global scope.

All global variables remain global if mod file is not marked thread safe. Otherwise, global variables written at least once gets promoted to thread variables.

If parameter is not a range and used only as read variable then it becomes global variable. To qualify it as thread variable it must be be written at least once and mod file must be marked as thread safe. To exclusively get parameters only, we exclude all other variables (in without) and then sort them with neuron/mod2c order.

Todo:: Below we calculate thread related id and sizes. This will need to do from global analysis pass as here we are handling top local variables, global variables, derivimplicit method. There might be more use cases with other solver methods.

If derivimplicit is used, then first three thread ids get assigned to: 1st thread is used for: deriv_advance 2nd thread is used for: dith 3rd thread is used for: newtonspace

slist and dlist represent the offsets for prime variables used. For euler or derivimplicit methods its always first number.

next thread id is allocated for top local variables

next thread id is allocated for thread promoted variables

find total size of local variables in global scope

find number of prime variables and total size

find pointer or bbcore pointer variables

find RANDOM variables

Definition at line 247 of file codegen_helper_visitor.cpp.

◆ find_range_variables()

void nmodl::codegen::CodegenHelperVisitor::find_range_variables ( )

private

Find range variables i.e.

ones that are belong to per instance allocation

In order to be compatible with NEURON, we need to print all variables in exact order as NEURON/MOD2C implementation. This is important because memory for all variables is allocated in single 1-D array with certain offset for each variable. The order of variables determine the offset and hence they must be in same order as NEURON.

Here is how order is determined into NEURON/MOD2C implementation:

First, following three lists are created

variables with parameter and range property (List 1)
variables with state and range property (List 2)
variables with assigned and range property (List 3)

Once created, we remove some variables due to the following criteria:

In NEURON/MOD2C implementation, we remove variables with NRNPRANGEIN or NRNPRANGEOUT type
So who has NRNPRANGEIN and NRNPRANGEOUT type? these are USEION read or write variables that are not ionic currents.
This is the reason for mod files CaDynamics_E2.mod or cal_mig.mod, ica variable is printed earlier in the list but other variables like cai, cao don't appear in same order.

Finally we create 4th list:

variables with assigned property and not in the previous 3 lists

We now print the variables in following order:

List 1 i.e. range + parameter variables are printed first
List 3 i.e. range + assigned variables are printed next
List 2 i.e. range + state variables are printed next
List 4 i.e. assigned and ion variables not present in the previous 3 lists

NOTE:

State variables also have the property assigned_definition but these variables are not from ASSIGNED block.
Variable can not be range as well as state, it's redeclaration error
Variable can be parameter as well as range. Without range, parameter is considered as global variable i.e. one value for all instances.
If a variable is only defined as RANGE and not in assigned or parameter or state block then it's not printed.
Note that a variable property is different than the variable type. For example, if variable has range property, it doesn't mean the variable is declared as RANGE. Other variables like STATE and ASSIGNED block variables also get range property without being explicitly declared as RANGE in the mod file.
Also, there is difference between declaration order vs. definition order. For example, POINTER variable in NEURON block is just declaration and doesn't determine the order in which they will get printed. Below we query symbol table and order all instance variables into certain order.

comparator to decide the order based on definition

from symbols vector vars, remove all ion variables which are not ionic currents

if secondary vector contains any symbol that exist in the primary then remove it

First come parameters which are range variables.

Second come assigned variables which are range variables.

Third come state variables. All state variables are kind of range by default. Note that some mod files like CaDynamics_E2.mod use cai as state variable which appear in USEION read/write list. These variables are not considered in this variables because non ionic-current variables are removed and printed later.

range_state_vars is copy of state variables but without non ionic current variables

Remaining variables are assigned and ion variables which are not in the previous 3 lists

make sure that variables already present in previous lists are removed to avoid any duplication

sort variables with their definition order

Definition at line 465 of file codegen_helper_visitor.cpp.

◆ find_table_variables()

void nmodl::codegen::CodegenHelperVisitor::find_table_variables ( )

private

Definition at line 582 of file codegen_helper_visitor.cpp.

◆ sort_with_mod2c_symbol_order()

void nmodl::codegen::CodegenHelperVisitor::sort_with_mod2c_symbol_order ( std::vector< SymbolType > & symbols )

staticprivate

How symbols are stored in NEURON? See notes written in markdown file.

Some variables get printed by iterating over symbol table in mod2c. The example of this is thread variables (and also ions?). In this case we must have to arrange order if we are going keep compatibility with NEURON.

Suppose there are three global variables: bcd, abc, abd, abe They will be in the 'a' bucket in order: abe, abd, abc and in 'b' bucket bcd So when we print thread variables, we first have to sort in the opposite order in which they come and then again order by first character in increasing order.

Note that variables in double array do not need this transformation and it seems like they should just follow definition order.

first sort by global id to get in reverse order

now order by name (to be same as neuron's bucket)

Definition at line 68 of file codegen_helper_visitor.cpp.

◆ visit_after_block()

void nmodl::codegen::CodegenHelperVisitor::visit_after_block ( const ast::AfterBlock & node )

overridevirtual

visit node of type ast::AfterBlock

Public Member Functions

Private Types

Private Member Functions

Static Private Member Functions

Private Attributes

Detailed Description

Member Typedef Documentation

◆ SymbolType

◆ SymbolVectorType

Constructor & Destructor Documentation

◆ CodegenHelperVisitor()

Member Function Documentation

◆ analyze()

◆ check_cvode_codegen()

◆ find_ion_variables()

◆ find_neuron_global_variables()

◆ find_non_range_variables()

◆ find_range_variables()

◆ find_table_variables()

◆ sort_with_mod2c_symbol_order()

◆ visit_after_block()

◆ visit_bbcore_pointer()

◆ visit_before_block()

◆ visit_binary_expression()

◆ visit_breakpoint_block()

◆ visit_conductance_hint()

◆ visit_constructor_block()

◆ visit_cvode_block()

◆ visit_derivative_block()

◆ visit_derivimplicit_callback()

◆ visit_destructor_block()

◆ visit_discrete_block()

◆ visit_eigen_linear_solver_block()

◆ visit_eigen_newton_solver_block()

◆ visit_electrode_current()

◆ visit_factor_def()

◆ visit_for_netcon()

◆ visit_function_block()

◆ visit_function_call()

◆ visit_function_table_block()

◆ visit_initial_block()

◆ visit_linear_block()

◆ visit_longitudinal_diffusion_block()

◆ visit_net_receive_block()

◆ visit_non_linear_block()

◆ visit_nrn_state_block()

◆ visit_procedure_block()

◆ visit_program()

◆ visit_statement_block()

◆ visit_suffix()

◆ visit_table_statement()

◆ visit_thread_safe()

◆ visit_update_dt()

◆ visit_verbatim()

◆ visit_watch()

◆ visit_watch_statement()

Member Data Documentation

◆ assign_lhs

◆ enable_cvode

◆ info

◆ psymtab

◆ table_statement_used

◆ under_breakpoint_block

◆ under_derivative_block

◆ under_net_receive_block