Struct MessageContentSignal 

pub struct MessageContentSignal {
    pub message_length: usize,
    pub line_count: usize,
    pub has_code_blocks: bool,
    pub file_path_count: usize,
    pub symbol_density: f64,
    pub is_question: bool,
    pub is_single_sentence: bool,
}

Signal derived from the structural properties of the last user message.

Language-agnostic — measures length, line count, code blocks, file paths, symbol density, etc. No keyword matching.

Fields

message_length: usize

Character count of the last user message.

line_count: usize

Number of lines.

has_code_blocks: bool

Whether the message contains code fences ( ).

file_path_count: usize

Number of distinct file path references detected.

symbol_density: f64

Ratio of code-like symbols to total characters.

is_question: bool

Whether the message ends with ‘?’.

is_single_sentence: bool

Whether it’s a short single-sentence (≤3 words, no newlines).

Implementations

impl MessageContentSignal

pub fn extract(messages: &[Message]) -> MessageContentSignal

Extract from the last user message in the conversation.

pub fn from_text(text: &str) -> MessageContentSignal

Analyze a raw text string.

pub fn normalized(&self) -> f64

Normalize to [0, 1] for scoring.

Contributions:

• length: 0–0.25
• line count: 0–0.15
• code blocks: 0 or 0.15
• file paths: 0–0.15
• symbol density: 0–0.15
• down-weight: question/short → −0.08/−0.06

pub fn decisive_tier(&self) -> Option<RouterTier>

Quick override: returns Some(tier) if the signal is decisive enough to skip the full scoring pipeline.

Used by Layer 0 (“확실한가?”) — only triggers when the signal is overwhelmingly simple or complex.

Trait Implementations

impl Clone for MessageContentSignal

fn clone(&self) -> MessageContentSignal

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MessageContentSignal

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Default for MessageContentSignal

fn default() -> MessageContentSignal

Returns the “default value” for a type.