diff --git a/base/components/interface.cpp b/base/components/interface.cpp
index 7d65eda..cfc67ee 100644
--- a/base/components/interface.cpp
+++ b/base/components/interface.cpp
@@ -71,6 +71,14 @@ void* fallback_allocator_proc( void* allocator_data, AllocType type, ssize size,
 	return nullptr;
 }
 
+internal
+void fallback_logger(LogEntry entry) 
+{
+	GEN_ASSERT(entry.msg.Len > 0);
+	GEN_ASSERT(entry.msg.Ptr);
+	log_fmt("%S: %S", loglevel_to_str(entry.level), entry.msg);
+}
+
 internal
 void define_constants()
 {
@@ -292,6 +300,10 @@ void init(Context* ctx)
 		ctx->InitSize_MacrosTable = kilobytes(8);
 	}
 
+	if (ctx->Logger == nullptr) {
+		ctx->Logger = & fallback_logger;
+	}
+
 	// Override the current context (user has to put it back if unwanted).
 	_ctx = ctx;
 
@@ -307,7 +319,7 @@ void init(Context* ctx)
 	}
 	// Setup the code pool and code entries arena.
 	{
-		Pool code_pool = pool_init( ctx->Allocator_Pool, ctx->CodePool_NumBlocks, sizeof(AST) );
+		Pool code_pool = pool_init( ctx->Allocator_Pool, ctx->CodePool_NumBlocks, size_of(AST) );
 		if ( code_pool.PhysicalStart == nullptr )
 			GEN_FATAL( "gen::init: Failed to initialize the code pool" );
 		array_append( ctx->CodePools, code_pool );
diff --git a/base/components/interface.hpp b/base/components/interface.hpp
index da0a1b3..0f58ba4 100644
--- a/base/components/interface.hpp
+++ b/base/components/interface.hpp
@@ -15,23 +15,34 @@
   \▓▓▓▓▓▓  \▓▓▓▓▓▓▓\▓▓   \▓▓     \▓▓▓▓▓▓\▓▓   \▓▓   \▓▓▓▓  \▓▓▓▓▓▓▓\▓▓      \▓▓       \▓▓▓▓▓▓▓ \▓▓▓▓▓▓▓ \▓▓▓▓▓▓▓
 */
 
-#if 0
 enum LogLevel : u32
 {
-	Info,
-	Warning,
-	Panic,
+	LL_Null,
+	LL_Note,
+	LL_Warning,
+	LL_Error,
+	LL_Fatal,
+	LL_UnderlyingType = GEN_U32_MAX,
 };
 
+Str loglevel_to_str(LogLevel level) 
+{
+	local_persist
+	Str lookup[] = {
+		txt("Info"),
+		txt("Warning"),
+		txt("Panic"),
+	};
+	return lookup[level];
+}
+
 struct LogEntry
 {
-	Str   msg;
-	u32   line_num;
-	void* data;
+	Str      msg;
+	LogLevel level;
 };
 
-typedef void LoggerCallback(LogEntry entry);
-#endif
+typedef void LoggerProc(LogEntry entry);
 
 // Note(Ed): This is subject to heavily change 
 // with upcoming changes to the library's fallback (default) allocations strategy;
@@ -70,6 +81,10 @@ struct Context
 // TODO(Ed): Symbol Table
 	// Keep track of all resolved symbols (naemspaced identifiers)
 
+// Logging
+
+	LoggerProc* Logger;
+
 // Parser
 
 	// Used by the lexer to persistently treat all these identifiers as preprocessor defines.
@@ -107,6 +122,45 @@ struct Context
 // An implicit context interface will be provided instead as wrapper procedures as convience.
 GEN_API extern Context* _ctx;
 
+// By default this library will either crash or exit if an error is detected while generating codes.
+// Even if set to not use GEN_FATAL, GEN_FATAL will still be used for memory failures as the library is unusable when they occur.
+#ifdef GEN_DONT_USE_FATAL
+	#define log_failure log_fmt
+#else
+	#define log_failure GEN_FATAL
+#endif
+
+// TODO(Ed): Swap all usage of this with logger_fmt (then rename logger_fmt to log_fmt)
+inline
+ssize log_fmt(char const* fmt, ...)
+{
+	ssize res;
+	va_list va;
+
+	va_start(va, fmt);
+	res = c_str_fmt_out_va(fmt, va);
+	va_end(va);
+
+	return res;
+}
+
+inline
+void logger_fmt(Context* ctx, LogLevel level, char const* fmt, ...)
+{
+	local_persist thread_local
+	PrintF_Buffer buf = struct_init(PrintF_Buffer, {0});
+
+	va_list va;
+	va_start(va, fmt);
+	ssize res = c_str_fmt_va(buf, GEN_PRINTF_MAXLEN, fmt, va) -1;
+	va_end(va);
+
+	StrBuilder msg = strbuilder_make_length(ctx->Allocator_Temp, buf, res);
+
+	LogEntry entry = { strbuilder_to_str(msg), level };
+	ctx->Logger(entry);
+}
+
 // Initialize the library. There first ctx initialized must exist for lifetime of other contextes that come after as its the one that
 GEN_API void init(Context* ctx);
 
@@ -117,7 +171,7 @@ GEN_API void deinit(Context* ctx);
 // Retrieves the active context (not usually needed, but here in case...)
 GEN_API Context* get_context();
 
-// Clears the allocations, but doesn't free the memoery, then calls init() again.
+// Clears the allocations, but doesn't free the memory, then calls init() again.
 // Ease of use.
 GEN_API void reset(Context* ctx);
 
@@ -398,7 +452,7 @@ GEN_API ssize token_fmt_va( char* buf, usize buf_size, s32 num_tokens, va_list v
 //! Do not use directly. Use the token_fmt macro instead.
 Str   token_fmt_impl( ssize, ... );
 
-GEN_API Code untyped_str( Str content);
+GEN_API Code untyped_str      ( Str content);
 GEN_API Code untyped_fmt      ( char const* fmt, ... );
 GEN_API Code untyped_token_fmt( s32 num_tokens, char const* fmt, ... );
 
diff --git a/base/components/types.hpp b/base/components/types.hpp
index 18762ea..e64a706 100644
--- a/base/components/types.hpp
+++ b/base/components/types.hpp
@@ -19,16 +19,6 @@
 
 */
 
-using LogFailType = ssize(*)(char const*, ...);
-
-// By default this library will either crash or exit if an error is detected while generating codes.
-// Even if set to not use GEN_FATAL, GEN_FATAL will still be used for memory failures as the library is unusable when they occur.
-#ifdef GEN_DONT_USE_FATAL
-	#define log_failure log_fmt
-#else
-	#define log_failure GEN_FATAL
-#endif
-
 enum AccessSpec : u32
 {
 	AccessSpec_Default,
diff --git a/base/dependencies/filesystem.hpp b/base/dependencies/filesystem.hpp
index 9d3676a..c9026b0 100644
--- a/base/dependencies/filesystem.hpp
+++ b/base/dependencies/filesystem.hpp
@@ -187,7 +187,7 @@ struct FileContents
 {
 	AllocatorInfo allocator;
 	void*         data;
-	ssize            size;
+	ssize         size;
 };
 
 constexpr b32 file_zero_terminate    = true;
diff --git a/base/dependencies/macros.hpp b/base/dependencies/macros.hpp
index b6cd161..ec2106c 100644
--- a/base/dependencies/macros.hpp
+++ b/base/dependencies/macros.hpp
@@ -298,10 +298,20 @@
 #	define GEN_PARAM_DEFAULT
 #endif
 
-#if GEN_COMPILER_CPP
-    #define struct_init(type, value) {value}
-#else
-    #define struct_init(type, value) {value}
+#ifndef struct_init
+#	if GEN_COMPILER_CPP
+#		define struct_init(type, value) value
+#	else
+#		define struct_init(type, value) (type) value
+#	endif
+#endif
+
+#ifndef struct_zero
+#	if GEN_COMPILER_CPP
+#		define struct_zero(type) {}
+#	else
+#		define struct_zero(type) (type) {0}
+#	endif
 #endif
 
 #if 0
diff --git a/base/dependencies/memory.hpp b/base/dependencies/memory.hpp
index 70e5508..2a7713d 100644
--- a/base/dependencies/memory.hpp
+++ b/base/dependencies/memory.hpp
@@ -134,12 +134,6 @@ GEN_API void* heap_allocator_proc( void* allocator_data, AllocType type, ssize s
 //! The heap allocator backed by operating system's memory manager.
 constexpr AllocatorInfo heap( void ) { AllocatorInfo allocator = { heap_allocator_proc, nullptr }; return allocator; }
 
-//! Helper to allocate memory using heap allocator.
-#define malloc( sz ) alloc( heap(), sz )
-
-//! Helper to free memory allocated by heap allocator.
-#define mfree( ptr ) allocator_free( heap(), ptr )
-
 struct VirtualMemory
 {
 	void*  data;
@@ -185,6 +179,8 @@ void  arena_check         (Arena* arena);
 void  arena_free          (Arena* arena);
 ssize arena_size_remaining(Arena* arena, ssize alignment);
 
+// TODO(Ed): Add arena_pos, arena_pop, and arena_pop_to
+
 struct Arena
 {
 	AllocatorInfo Backing;
diff --git a/base/dependencies/printing.hpp b/base/dependencies/printing.hpp
index 5ddc20e..2550254 100644
--- a/base/dependencies/printing.hpp
+++ b/base/dependencies/printing.hpp
@@ -26,17 +26,4 @@ GEN_API ssize  c_str_fmt_file_va   ( FileInfo* f, char const* fmt, va_list va );
 constexpr
 char const* Msg_Invalid_Value = "INVALID VALUE PROVIDED";
 
-inline
-ssize log_fmt(char const* fmt, ...)
-{
-	ssize res;
-	va_list va;
-
-	va_start(va, fmt);
-	res = c_str_fmt_out_va(fmt, va);
-	va_end(va);
-
-	return res;
-}
-
 #pragma endregion Printing