class

Detector::Haskell::Cli

Detects Haskell command-line apps via optparse-applicative, cmdargs, System.Console.GetOpt, System.Environment.getArgs, or turtle's Turtle.Options. Never gates on bare getEnv/lookupEnv (Scotty/Servant config).

Constants

MARKERS = /\bimport\s+(?:qualified\s+)?Options\.Applicative\b|\b(?:execParser|customExecParser|strOption|subparser|hsubparser)\b|\bimport\s+(?:qualified\s+)?System\.Console\.(?:GetOpt|CmdArgs)\b|\bimport\s+(?:qualified\s+)?System\.Environment\b|#{TURTLE_MARKERS}/

TURTLE_MARKERS = /\bimport\s+(?:qualified\s+)?Turtle\.Options\b|\bimport\s+(?:qualified\s+)?Turtle\b\s*\([^)]*\boptions\b[^)]*\)/

Turtle re-exports Turtle.Options from the top-level Turtle module, which is used pervasively for plain shell scripting too, so gate on either the qualified submodule import or an explicit options name in the unqualified import list, never a bare import Turtle.

Instance methods

applicable?(filename : String) : Bool

Cheap filename-only filter the detector pass uses to skip detect on files the detector cannot possibly match. The default true preserves prior behavior (every detector runs on every file). Override with the same predicate the body of detect starts with — e.g., filename.ends_with?(".py") for a Python framework detector — so the detector loop avoids the detect dispatch on files outside the detector's language.

On large codebases (saleor's 4255 .py files) this lifts ~100 virtual detect calls per file out of the hot loop because most detectors' inner first-line is exactly this kind of cheap filename check.

Source

detect(filename : String, file_contents : String) : Bool

Source

name

The tech name; detector_for overrides it. Empty on the bare base.

Source