src/base/features/debug.hpp

#pragma once

#include"base/dependencies/index.hpp"

#include"attributes.hpp"
#include"characters.hpp"
#include"output.hpp"

// Control sequence introducer for the terminal.
#define CSI "\033["

// RGB foreground color prefix sequence.
#define RGB CSI"38;2;"

// Color sequences.
#define BLUE RGB"30;144;255m"
#define CYAN RGB"0;206;209m"
#define GRAY RGB"119;136;153m"
#define GREEN RGB"50;205;50m"
#define RED RGB"255;0;0m"
#define VIOLET RGB"148;0;211m"
#define YELLOW RGB"255;215;0m"

// Font style sequences.
#define BOLD CSI"1m"
#define ITALIC CSI"3m"
#define NOBOLD CSI"22m"
#define NOITALIC CSI"23m"
#define NOUNDERLINE CSI"24m"
#define UNDERLINE CSI"4m"

// Reset sequence.
#define RESET CSI"m"

// Constant expression that evaluates to nothing.
#define NOOP ((void)0)

// Assert that an expression is true locally.
#ifdef LOCAL
#define ASSERT(x)({if(!(x))UNLIKELY{write(cerr,RED,BOLD,"Error",NOBOLD,": fail\
ed assertion in line ",UNDERLINE,__FILE__,':',__LINE__,NOUNDERLINE,": ",ITALIC\
,#x,RESET,lf);abort();}})
#else
#define ASSERT(x)NOOP
#endif

// Print an expression and its value to standard error locally.
#ifdef LOCAL
#define DEBUG(x)(write(cerr,BLUE,ITALIC,#x,NOITALIC," = ",(x),RESET,lf))
#else
#define DEBUG(x)NOOP
#endif

// Print multiple values to standard error locally.
#ifdef LOCAL
#define LOG(...)(write(cerr,GRAY,__VA_ARGS__,RESET,lf))
#else
#define LOG(...)NOOP
#endif

// Print a new line to standard error locally.
#ifdef LOCAL
#define LINE (cerr<<lf)
#else
#define LINE NOOP
#endif