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Merged
carlos-alm merged 1 commit into from
Feb 28, 2026
Merged

feat: add Halstead, LOC, and MI metrics to Rust native engine #159

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622 changes: 617 additions & 5 deletions crates/codegraph-core/src/complexity.rs
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10 changes: 5 additions & 5 deletions crates/codegraph-core/src/extractors/csharp.rs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
use tree_sitter::{Node, Tree};
use crate::complexity::{compute_function_complexity, CSHARP_RULES};
use crate::complexity::compute_all_metrics;
use crate::types::*;
use super::helpers::*;
use super::SymbolExtractor;
Expand Down Expand Up @@ -104,7 +104,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(&child),
end_line: Some(end_line(&child)),
decorators: None,
complexity: Some(compute_function_complexity(&child, &CSHARP_RULES)),
complexity: compute_all_metrics(&child, source, "c_sharp"),
});
}
}
Expand Down Expand Up @@ -141,7 +141,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(node),
end_line: Some(end_line(node)),
decorators: None,
complexity: Some(compute_function_complexity(node, &CSHARP_RULES)),
complexity: compute_all_metrics(node, source, "c_sharp"),
});
}
}
Expand All @@ -160,7 +160,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(node),
end_line: Some(end_line(node)),
decorators: None,
complexity: Some(compute_function_complexity(node, &CSHARP_RULES)),
complexity: compute_all_metrics(node, source, "c_sharp"),
});
}
}
Expand All @@ -179,7 +179,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(node),
end_line: Some(end_line(node)),
decorators: None,
complexity: Some(compute_function_complexity(node, &CSHARP_RULES)),
complexity: compute_all_metrics(node, source, "c_sharp"),
});
}
}
Expand Down
6 changes: 3 additions & 3 deletions crates/codegraph-core/src/extractors/go.rs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
use tree_sitter::{Node, Tree};
use crate::complexity::{compute_function_complexity, GO_RULES};
use crate::complexity::compute_all_metrics;
use crate::types::*;
use super::helpers::*;
use super::SymbolExtractor;
Expand All @@ -24,7 +24,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(node),
end_line: Some(end_line(node)),
decorators: None,
complexity: Some(compute_function_complexity(node, &GO_RULES)),
complexity: compute_all_metrics(node, source, "go"),
});
}
}
Expand Down Expand Up @@ -60,7 +60,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(node),
end_line: Some(end_line(node)),
decorators: None,
complexity: Some(compute_function_complexity(node, &GO_RULES)),
complexity: compute_all_metrics(node, source, "go"),
});
}
}
Expand Down
8 changes: 4 additions & 4 deletions crates/codegraph-core/src/extractors/java.rs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
use tree_sitter::{Node, Tree};
use crate::complexity::{compute_function_complexity, JAVA_RULES};
use crate::complexity::compute_all_metrics;
use crate::types::*;
use super::helpers::*;
use super::SymbolExtractor;
Expand Down Expand Up @@ -110,7 +110,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(&child),
end_line: Some(end_line(&child)),
decorators: None,
complexity: Some(compute_function_complexity(&child, &JAVA_RULES)),
complexity: compute_all_metrics(&child, source, "java"),
});
}
}
Expand Down Expand Up @@ -147,7 +147,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(node),
end_line: Some(end_line(node)),
decorators: None,
complexity: Some(compute_function_complexity(node, &JAVA_RULES)),
complexity: compute_all_metrics(node, source, "java"),
});
}
}
Expand All @@ -166,7 +166,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(node),
end_line: Some(end_line(node)),
decorators: None,
complexity: Some(compute_function_complexity(node, &JAVA_RULES)),
complexity: compute_all_metrics(node, source, "java"),
});
}
}
Expand Down
14 changes: 7 additions & 7 deletions crates/codegraph-core/src/extractors/javascript.rs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
use tree_sitter::{Node, Tree};
use crate::complexity::{compute_function_complexity, JS_TS_RULES};
use crate::complexity::compute_all_metrics;
use crate::types::*;
use super::helpers::*;
use super::SymbolExtractor;
Expand All @@ -24,7 +24,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(node),
end_line: Some(end_line(node)),
decorators: None,
complexity: Some(compute_function_complexity(node, &JS_TS_RULES)),
complexity: compute_all_metrics(node, source, "javascript"),
});
}
}
Expand Down Expand Up @@ -80,7 +80,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(node),
end_line: Some(end_line(node)),
decorators: None,
complexity: Some(compute_function_complexity(node, &JS_TS_RULES)),
complexity: compute_all_metrics(node, source, "javascript"),
});
}
}
Expand Down Expand Up @@ -138,7 +138,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(node),
end_line: Some(end_line(&value_n)),
decorators: None,
complexity: Some(compute_function_complexity(&value_n, &JS_TS_RULES)),
complexity: compute_all_metrics(&value_n, source, "javascript"),
});
}
}
Expand Down Expand Up @@ -562,7 +562,7 @@ fn extract_callback_definition(call_node: &Node, source: &[u8]) -> Option<Defini
line: start_line(&cb),
end_line: Some(end_line(&cb)),
decorators: None,
complexity: Some(compute_function_complexity(&cb, &JS_TS_RULES)),
complexity: compute_all_metrics(&cb, source, "javascript"),
});
}

Expand All @@ -579,7 +579,7 @@ fn extract_callback_definition(call_node: &Node, source: &[u8]) -> Option<Defini
line: start_line(&cb),
end_line: Some(end_line(&cb)),
decorators: None,
complexity: Some(compute_function_complexity(&cb, &JS_TS_RULES)),
complexity: compute_all_metrics(&cb, source, "javascript"),
});
}

Expand All @@ -593,7 +593,7 @@ fn extract_callback_definition(call_node: &Node, source: &[u8]) -> Option<Defini
line: start_line(&cb),
end_line: Some(end_line(&cb)),
decorators: None,
complexity: Some(compute_function_complexity(&cb, &JS_TS_RULES)),
complexity: compute_all_metrics(&cb, source, "javascript"),
});
}

Expand Down
8 changes: 4 additions & 4 deletions crates/codegraph-core/src/extractors/php.rs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
use tree_sitter::{Node, Tree};
use crate::complexity::{compute_function_complexity, PHP_RULES};
use crate::complexity::compute_all_metrics;
use crate::types::*;
use super::helpers::*;
use super::SymbolExtractor;
Expand Down Expand Up @@ -40,7 +40,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(node),
end_line: Some(end_line(node)),
decorators: None,
complexity: Some(compute_function_complexity(node, &PHP_RULES)),
complexity: compute_all_metrics(node, source, "php"),
});
}
}
Expand Down Expand Up @@ -122,7 +122,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(&child),
end_line: Some(end_line(&child)),
decorators: None,
complexity: Some(compute_function_complexity(&child, &PHP_RULES)),
complexity: compute_all_metrics(&child, source, "php"),
});
}
}
Expand Down Expand Up @@ -172,7 +172,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(node),
end_line: Some(end_line(node)),
decorators: None,
complexity: Some(compute_function_complexity(node, &PHP_RULES)),
complexity: compute_all_metrics(node, source, "php"),
});
}
}
Expand Down
4 changes: 2 additions & 2 deletions crates/codegraph-core/src/extractors/python.rs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
use tree_sitter::{Node, Tree};
use crate::complexity::{compute_function_complexity, PYTHON_RULES};
use crate::complexity::compute_all_metrics;
use crate::types::*;
use super::helpers::*;
use super::SymbolExtractor;
Expand Down Expand Up @@ -40,7 +40,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
} else {
Some(decorators)
},
complexity: Some(compute_function_complexity(node, &PYTHON_RULES)),
complexity: compute_all_metrics(node, source, "python"),
});
}
}
Expand Down
6 changes: 3 additions & 3 deletions crates/codegraph-core/src/extractors/ruby.rs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
use tree_sitter::{Node, Tree};
use crate::complexity::{compute_function_complexity, RUBY_RULES};
use crate::complexity::compute_all_metrics;
use crate::types::*;
use super::helpers::*;
use super::SymbolExtractor;
Expand Down Expand Up @@ -77,7 +77,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(node),
end_line: Some(end_line(node)),
decorators: None,
complexity: Some(compute_function_complexity(node, &RUBY_RULES)),
complexity: compute_all_metrics(node, source, "ruby"),
});
}
}
Expand All @@ -96,7 +96,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(node),
end_line: Some(end_line(node)),
decorators: None,
complexity: Some(compute_function_complexity(node, &RUBY_RULES)),
complexity: compute_all_metrics(node, source, "ruby"),
});
}
}
Expand Down
6 changes: 3 additions & 3 deletions crates/codegraph-core/src/extractors/rust_lang.rs
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
use tree_sitter::{Node, Tree};
use crate::complexity::{compute_function_complexity, RUST_LANG_RULES};
use crate::complexity::compute_all_metrics;
use crate::types::*;
use super::helpers::*;
use super::SymbolExtractor;
Expand Down Expand Up @@ -43,7 +43,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(node),
end_line: Some(end_line(node)),
decorators: None,
complexity: Some(compute_function_complexity(node, &RUST_LANG_RULES)),
complexity: compute_all_metrics(node, source, "rust"),
});
}
}
Expand Down Expand Up @@ -102,7 +102,7 @@ fn walk_node(node: &Node, source: &[u8], symbols: &mut FileSymbols) {
line: start_line(&child),
end_line: Some(end_line(&child)),
decorators: None,
complexity: Some(compute_function_complexity(&child, &RUST_LANG_RULES)),
complexity: compute_all_metrics(&child, source, "rust"),
});
}
}
Expand Down
45 changes: 45 additions & 0 deletions crates/codegraph-core/src/types.rs
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Original file line number Diff line number Diff line change
@@ -1,13 +1,58 @@
use napi_derive::napi;
use serde::{Deserialize, Serialize};

#[napi(object)]
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct HalsteadMetrics {
pub n1: u32,
pub n2: u32,
#[napi(js_name = "bigN1")]
pub big_n1: u32,
#[napi(js_name = "bigN2")]
pub big_n2: u32,
pub vocabulary: u32,
pub length: u32,
pub volume: f64,
pub difficulty: f64,
pub effort: f64,
pub bugs: f64,
}

#[napi(object)]
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct LocMetrics {
pub loc: u32,
pub sloc: u32,
#[napi(js_name = "commentLines")]
pub comment_lines: u32,
}

#[napi(object)]
#[derive(Debug, Clone, Serialize, Deserialize)]
pub struct ComplexityMetrics {
pub cognitive: u32,
pub cyclomatic: u32,
#[napi(js_name = "maxNesting")]
pub max_nesting: u32,
pub halstead: Option<HalsteadMetrics>,
pub loc: Option<LocMetrics>,
#[napi(js_name = "maintainabilityIndex")]
pub maintainability_index: Option<f64>,
}

impl ComplexityMetrics {
/// Construct a basic metrics result with only cognitive/cyclomatic/maxNesting.
/// Used by `compute_function_complexity` and existing tests.
pub fn basic(cognitive: u32, cyclomatic: u32, max_nesting: u32) -> Self {
Self {
cognitive,
cyclomatic,
max_nesting,
halstead: None,
loc: None,
maintainability_index: None,
}
}
}

#[napi(object)]
Expand Down
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