Metric-Halstead.Vocabulary

Halstead Vocabulary

Required inputs: RFG

Let

• n1 = the number of different operators
• n2 = the number of different operands
• N1 = the total number of operators
• N2 = the total number of operands
• n = n1 + n2 (vocabulary)
• N = N1 + N2 (program length)
• V = N * log2(n) (volume)
• D = (n1/2)*(N2/n2) (difficulty)
• E = D * V (effort)

For more information on what is considered an operator please refer to the documentation (Project Configuration / Language Schema / Language Representation for C / Metrics / Halstead metrics).

Possible Messages

This rule has no predefined messages.

Options

• This rule shares the following common options: exclude_messages_in_system_headers, excludes, includes, justification_checker, post_processing, provider, severity

• This rule shares the following common metric options: base_view_name, excluded_node_types, hierarchy_edge_name, hierarchy_view_name, propagate, report_all_values, report_propagated_values

• The following places define options that affect this rule: HalsteadMetrics, Analysis-GlobalOptions

display_name

display_name : str | None = 'Halstead Vocabulary'

Description of the metric shown in the dashboard. If None, rfg_metric_name is used.

 

max_value

max_value : int | None = None

Maximum allowed value. None if unlimited.

 

min_value

min_value : int | None = None

Minimum allowed value. None if unlimited.

 

rfg_metric_name

rfg_metric_name : str = 'Metric.Halstead.Vocabulary'

Name of the node attribute storing the metric value in the RFG.