D Analysis Tool
This project uses the Lexer and Parser of https://github.com/Hackerpilot/Dscanner
Check your (named) imports on unused or under used.
Usage:
--minImportUsage - The minimum of usage for imports. If this is deceeded, there is a warning. -miu - the same --minVarUsage - The minimum of usage for variables. If this is deceeded, there is a warning. -mvu - the same --quit - No warning for public or package imports/variables and for variables within a unittest. -q - the same
test.d:
module test;import std.stdio; public { import std.file : read, mkdir; import std.string : format, strip; } import std.array : split, join, empty; import std.algorithm : startsWith, endsWith; import std.c.string : memcpy;
bool isEmpty(string test) { return test.strip().empty(); }
private void _foo() { int[] arr; int[4] arrs; int[int] arrt; int[ulong] arrt2; }
string fmt() { string str = "one\nnew line";
{ string str_; str = "abc"; } void* p; std.c.string.memcpy(p, &str, str.sizeof); return format("%d.%d.%d", 0, 9, 9);}
@property const(string) bar() pure { return ""; }
struct C { private: int id; }
C[void*] c_map;
void main() { uint id = 0; id++;
byte[] _buffer; _buffer = new byte[4]; byte[byte*] bbmap; const uint msize = 42; void[] memory = new void[msize]; assert(memory !is null);}
debug { string outdir = "Debug"; } else { string outdir = "Release"; }
void unused() { if (!outdir) mkdir(outdir); else mkdir(outdir ~ "_New"); }
struct Foo { int foo1;
enum : ubyte { Unused, } int foo2;}
Checked with:
dat test.d -miu=2
:: Check minimum import usage: ---- Warning: test.d(5): Named import 'read' of module 'std.file' is never used. But maybe the import is used outside, because it is marked as public. Warning: test.d(6): Named import 'format' of module 'std.string' is used only 1 times. But maybe the import is used outside, because it is marked as public. Warning: test.d(6): Named import 'strip' of module 'std.string' is used only 1 times. But maybe the import is used outside, because it is marked as public. Warning: test.d(8): Named import 'split' of module 'std.array' is never used. Warning: test.d(8): Named import 'join' of module 'std.array' is never used. Warning: test.d(8): Named import 'empty' of module 'std.array' is used only 1 times. Warning: test.d(9): Named import 'startsWith' of module 'std.algorithm' is never used. Warning: test.d(9): Named import 'endsWith' of module 'std.algorithm' is never used. => Therefore it is useless to import std.algorithm. Warning: test.d(10): Named import 'memcpy' of module 'std.c.string' is used only 1 times. ------- 9 occurrences in 1 files.
And with dat test.d -miu=2 -q
:: Check minimum import usage: ---- Warning: test.d(8): Named import 'split' of module 'std.array' is never used. Warning: test.d(8): Named import 'join' of module 'std.array' is never used. Warning: test.d(8): Named import 'empty' of module 'std.array' is used only 1 times. Warning: test.d(9): Named import 'startsWith' of module 'std.algorithm' is never used. Warning: test.d(9): Named import 'endsWith' of module 'std.algorithm' is never used. => Therefore it is useless to import std.algorithm. Warning: test.d(10): Named import 'memcpy' of module 'std.c.string' is used only 1 times. ------- 6 occurrences in 1 files.
And for std/stdio.d checked with:
dat D:/D/dmd2/src/phobos/std/stdio.d -miu=2
Warning: D:/D/dmd2/src/phobos/std/stdio.d(35): Named import 'FHND_WCHAR' of module 'std.c.stdio' is used only 1 times. Warning: D:/D/dmd2/src/phobos/std/stdio.d(3145): Named import 'memcpy' of module 'core.stdc.string' is used only 1 times. But maybe the import is used outside, because it is marked as public.
And finally a test for unused/underused variables with dat test.d -mvu=1
:: Check minimum variable usage: ---- Warning: test.d(17): Variable 'arr' of type int[] is never used. Warning: test.d(18): Variable 'arrs' of type int[4] is never used. Warning: test.d(19): Variable 'arrt' of type int[int] is never used. Warning: test.d(20): Variable 'arrt2' of type int[ulong] is never used. Warning: test.d(27): Variable 'str_' of type string is never used. Warning: test.d(44): Variable 'id' of type int is never used. Warning: test.d(47): Variable 'c_map' of type void* is never used. Warning: test.d(56): Variable 'bbmap' of type byte[byte*] is never used. Warning: test.d(77): Variable 'foo1' of type int is never used. But maybe it is used outside, because it is marked as public. Warning: test.d(83): Variable 'foo2' of type int is never used. But maybe it is used outside, because it is marked as public. ------- 10 occurrences in 1 files.
And with dat test.d -mvu=1 -q
:: Check minimum variable usage: ---- Warning: test.d(17): Variable 'arr' of type int[] is never used. Warning: test.d(18): Variable 'arrs' of type int[4] is never used. Warning: test.d(19): Variable 'arrt' of type int[int] is never used. Warning: test.d(20): Variable 'arrt2' of type int[ulong] is never used. Warning: test.d(27): Variable 'str_' of type string is never used. Warning: test.d(44): Variable 'id' of type int is never used. Warning: test.d(47): Variable 'c_map' of type void* is never used. Warning: test.d(56): Variable 'bbmap' of type byte[byte*] is never used. ------- 8 occurrences in 1 files.