dlog/source/dlog/core.d

381 lines
9.4 KiB
D

/**
* Core module containing types pertaining to the base Logger
* class and base MessageTransform class (along with a default
* transform, DefaultTransform)
*/
module dlog.core;
import std.conv : to;
import std.range : join;
import dlog.transform : MessageTransform;
import dlog.defaults;
import dlog.context : Context, CompilationInfo;
/**
* Logger
*
* Represents a logger instance
*/
public class Logger
{
/* Starting transformation */
private MessageTransform messageTransform;
/* The multiple argument joiner */
private string multiArgJoiner;
/**
* Constructs a new Logger with the default
* MessageTransform, see TODO (ref module)
*/
this(string multiArgJoiner = " ")
{
this(new DefaultTransform(), multiArgJoiner);
}
/**
* Constructs a new Logger with the given
* MessageTransform
*/
this(MessageTransform messageTransform, string multiArgJoiner = " ")
{
this.messageTransform = messageTransform;
this.multiArgJoiner = multiArgJoiner;
}
unittest
{
Logger logger = new DefaultLogger();
alias testParameters = AliasSeq!("This is a log message", 1.1, true, [1,2,3], 'f', logger);
// Same as above but with a custom joiner set
logger = new DefaultLogger(" ");
logger.log3(testParameters);
Context ctx = new Context();
logger.log3Ctx(ctx, testParameters);
}
/**
* Given an arbitrary amount of arguments, convert each to a string
* and return that as an array
*
* Params:
* segments = alias sequence
* Returns: a flattened string[]
*/
public static string[] flatten(TextType...)(TextType segments)
{
/* The flattened components */
string[] components;
/* Flatten the components */
static foreach(messageComponent; segments)
{
components ~= to!(string)(messageComponent);
}
return components;
}
/**
* Logs the given string using the default context
*
* Params:
* text = the string to log
* __FILE_FULL_PATH__ = compile time usage file
* __FILE__ = compile time usage file (relative)
* __LINE__ = compile time usage line number
* __MODULE__ = compile time usage module
* __FUNCTION__ = compile time usage function
* __PRETTY_FUNCTION__ = compile time usage function (pretty)
*/
public final void log3(string text, string c1 = __FILE_FULL_PATH__,
string c2 = __FILE__, ulong c3 = __LINE__,
string c4 = __MODULE__, string c5 = __FUNCTION__,
string c6 = __PRETTY_FUNCTION__)
{
/* Use the default context `Context` */
Context defaultContext = new Context();
/* Build up the line information */
CompilationInfo compilationInfo = CompilationInfo(c1, c2, c3, c4, c5, c6);
/* Set the line information in the context */
defaultContext.setLineInfo(compilationInfo);
/* Call the log */
log3Ctx(defaultContext, text, c1, c2, c3, c4, c5, c6);
}
/**
* Logs using the default context an arbitrary amount of arguments
*
* Params:
* segments = the arbitrary argumnets (alias sequence)
* __FILE_FULL_PATH__ = compile time usage file
* __FILE__ = compile time usage file (relative)
* __LINE__ = compile time usage line number
* __MODULE__ = compile time usage module
* __FUNCTION__ = compile time usage function
* __PRETTY_FUNCTION__ = compile time usage function (pretty)
*/
public final void log3(TextType...)(TextType segments, string c1 = __FILE_FULL_PATH__,
string c2 = __FILE__, ulong c3 = __LINE__,
string c4 = __MODULE__, string c5 = __FUNCTION__,
string c6 = __PRETTY_FUNCTION__)
{
/**
* Grab at compile-time all arguments and generate runtime code to add them to `components`
*
* The reason for taking n-1 is because the last argument is the context pointer (i.e. `this`)
* seeing how instance methods work.
*/
string[] components = flatten(segments)[0..$-1];
/* Join all `components` into a single string */
string messageOut = join(components, multiArgJoiner);
/* Call the log (with text and default context) */
log3(messageOut, c1, c2, c3, c4, c5, c6);
}
/**
* Logs the given string using the provided context
*
* Params:
* context = the custom context to use
* text = the string to log
* __FILE_FULL_PATH__ = compile time usage file
* __FILE__ = compile time usage file (relative)
* __LINE__ = compile time usage line number
* __MODULE__ = compile time usage module
* __FUNCTION__ = compile time usage function
* __PRETTY_FUNCTION__ = compile time usage function (pretty)
*/
public final void log3Ctx(Context context, string text, string c1 = __FILE_FULL_PATH__,
string c2 = __FILE__, ulong c3 = __LINE__,
string c4 = __MODULE__, string c5 = __FUNCTION__,
string c6 = __PRETTY_FUNCTION__)
{
/* Build up the line information */
CompilationInfo compilationInfo = CompilationInfo(c1, c2, c3, c4, c5, c6);
/* Set the line information in the context */
context.setLineInfo(compilationInfo);
/* Apply the transformation on the message */
string transformedMesage = messageTransform.execute(text, context);
/* Call the underlying logger implementation */
logImpl(transformedMesage);
}
public alias log = log3;
public alias logc = log3Ctx;
/**
* Logging implementation, this is where the final
* transformed text will be transferred to and finally
* logged
*
* Params:
* message = the message to log
*/
protected abstract void logImpl(string message);
}
version(unittest)
{
import std.meta : AliasSeq;
import std.stdio : writeln;
}
/**
* Tests the DefaultLogger
*/
unittest
{
writeln();
writeln();
Logger logger = new DefaultLogger();
alias testParameters = AliasSeq!("This is a log message", 1.1, true, [1,2,3], 'f', logger);
// Test various types one-by-one
static foreach(testParameter; testParameters)
{
logger.log(testParameter);
}
// Test various parameters (of various types) all at once
logger.log(testParameters);
// Same as above but with a custom joiner set
logger = new DefaultLogger("(-)");
logger.log(testParameters);
writeln();
}
/**
* Tests the DefaultLogger but custom `log()` context
*/
unittest
{
writeln();
writeln();
// Logger logger = new DefaultLogger();
// alias testParameters = AliasSeq!("This is a log message", 1.1, true, [1,2,3], 'f', logger);
// // Test various types one-by-one
// static foreach(testParameter; testParameters)
// {
// logger.log(["cool context"], testParameter);
// }
// // Test various parameters (of various types) all at once
// logger.log(["cool context"], testParameters);
// // Same as above but with a custom joiner set
// logger = new DefaultLogger("(-)");
// logger.log(["cool context"], testParameters);
// writeln();
}
/**
* Tests the `log2()` method using the DefaultLogger
* and no custom Context
*/
unittest
{
writeln();
writeln();
Logger logger = new DefaultLogger();
alias testParameters = AliasSeq!("This is a log message", 1.1, true, [1,2,3], 'f', logger);
// Test various parameters (of various types) all at once
// logger.log2(testParameters);
// // Same as above but with a custom joiner set
// logger = new DefaultLogger("(-)");
// logger.log2(testParameters);
// writeln();
}
/**
* Tests the `log2()` method using the DefaultLogger
* and using a custom Context
*/
unittest
{
writeln();
writeln();
Logger logger = new DefaultLogger();
alias testParameters = AliasSeq!("This is a log message", 1.1, true, [1,2,3], 'f', logger);
// Test various parameters (of various types) all at once
// logger.log2(testParameters);
// // Same as above but with a custom joiner set
// logger = new DefaultLogger("(-)");
// logger.log2(testParameters, new Context());
// writeln();
}
/**
* Tests the `log2()` method using the DefaultLogger
* and using a custom CompilationInfo
*/
unittest
{
writeln();
writeln();
Logger logger = new DefaultLogger();
alias testParameters = AliasSeq!("This is a log message", 1.1, true, [1,2,3], 'f', logger);
// Test various parameters (of various types) all at once
// logger.log2(testParameters);
// // Same as above but with a custom joiner set
// logger = new DefaultLogger("(-)");
// logger.log2(testParameters, CompilationInfo(__FILE_FULL_PATH__, __FILE__, __LINE__, __MODULE__, __FUNCTION__, __PRETTY_FUNCTION__));
// writeln();
}
/**
* Tests the `log2()` method using the DefaultLogger
* and using a custom CompilationInfo and custom context
*/
unittest
{
writeln();
writeln();
Logger logger = new DefaultLogger();
alias testParameters = AliasSeq!("This is a log message", 1.1, true, [1,2,3], 'f', logger);
// Same as above but with a custom joiner set
logger = new DefaultLogger("(-)");
// logger.log2(testParameters, new Context(), CompilationInfo(__FILE_FULL_PATH__, __FILE__, __LINE__, __MODULE__, __FUNCTION__, __PRETTY_FUNCTION__));
writeln();
}
/**
* Printing out some arrays, also using a DEFAULT context
*/
unittest
{
Logger logger = new DefaultLogger();
// Same as above but with a custom joiner set
logger = new DefaultLogger();
logger.log(["a", "b", "c", "d"], [1, 2], true);
writeln();
writeln();
}
/**
* Printing out some arrays, also using a CUSTOM context
*/
unittest
{
Logger logger = new DefaultLogger();
// Same as above but with a custom joiner set
logger = new DefaultLogger(" ");
// Create a noticeable custom context
// TODO: Actually make this somewhat noticeable
Context customContext = new Context();
// Log with the custom context
logger.logc(customContext, ["an", "array"], 1, "hello", true);
writeln();
writeln();
}