arborist-metrics 0.1.3

Multi-language code complexity metrics (cognitive, cyclomatic, SLOC) powered by tree-sitter
Documentation 
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// SPDX-License-Identifier: MIT OR Apache-2.0
// Copyright (c) 2026 Strange Days Tech S.A.S. de C.V. <https://strangedays.tech>

use crate::languages::LanguageProfile;

pub struct GoProfile;

impl LanguageProfile for GoProfile {
    fn function_nodes(&self) -> &[&str] {
        &["function_declaration", "method_declaration"]
    }

    fn control_flow_nodes(&self) -> &[&str] {
        &[
            "if_statement",
            "for_statement",
            "expression_switch_statement",
            "type_switch_statement",
            "select_statement",
            "else",
        ]
    }

    fn nesting_nodes(&self) -> &[&str] {
        &[
            "if_statement",
            "for_statement",
            "expression_switch_statement",
            "type_switch_statement",
            "select_statement",
        ]
    }

    fn boolean_operators(&self) -> &[&str] {
        &["&&", "||"]
    }

    fn else_if_nodes(&self) -> &[&str] {
        &[]
    }

    fn lambda_nodes(&self) -> &[&str] {
        &["func_literal"]
    }

    fn comment_nodes(&self) -> &[&str] {
        &["comment"]
    }

    fn extract_function_name(&self, node: &tree_sitter::Node, source: &[u8]) -> Option<String> {
        node.child_by_field_name("name")
            .and_then(|n| n.utf8_text(source).ok())
            .map(|s| s.to_string())
    }

    fn parser_language(&self) -> tree_sitter::Language {
        tree_sitter_go::LANGUAGE.into()
    }

    fn extensions(&self) -> &[&str] {
        &[".go"]
    }

    fn is_method(&self, node: &tree_sitter::Node) -> bool {
        node.kind() == "method_declaration"
    }

    fn match_construct_nodes(&self) -> &[&str] {
        &[
            "expression_switch_statement",
            "type_switch_statement",
            "select_statement",
        ]
    }

    fn match_arm_nodes(&self) -> &[&str] {
        &[
            "expression_case",
            "default_case",
            "type_case",
            "communication_case",
        ]
    }
}