added io library

lib/CMakeLists.txt

@@ -0,0 +1,20 @@
+cmake_minimum_required(VERSION 3.15...3.25)
+
+project(gemstone_stdlib
+    VERSION 0.1.0
+    DESCRIPTION "gemstone programming language standard library"
+    LANGUAGES C)
+
+set(CMAKE_C_STANDARD 23)
+set(CMAKE_C_STANDARD_REQUIRED TRUE)
+
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+include_directories(${PROJECT_SOURCE_DIR})
+set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY "${PROJECT_SOURCE_DIR}/../bin/std")
+
+# add native module libraries 
+
+file(GLOB_RECURSE STDLIB_IO_SOURCE_FILES io/*.c)
+add_library(io ${STDLIB_IO_SOURCE_FILES})
+

lib/def.gem

@@ -0,0 +1,38 @@
+# Author: Sven Vogel
+# Edited: 25.05.2024
+# License: GPL-2.0
+
+# ,----------------------------------------.
+# |       Standard Type definitions        |
+# `----------------------------------------`
+
+# Unsigned integrals
+
+type unsgined half half int: u8
+type unsgined half int: u16
+type unsgined int: u32
+type unsgined double int: u64
+type unsgined double double int: u128
+
+# Signed integrals
+
+type signed u8: i8
+type signed u16: i16
+type signed u32: i32
+type signed u64: i64
+type signed u128: i128
+
+# IEEE-754 floating point
+
+type signed half float: f16
+type signed float: f32
+type signed double float: f64
+type signed double double float: f128
+
+# String constant
+
+type ref u8: str
+
+# C style void pointer replacement
+
+type ref u8: ptr

lib/def/def.h

@@ -22,4 +22,6 @@ typedef double f64;
 
 typedef u8* str;
 
+typedef u8* ptr;
+
 #endif // GEMSTONE_STD_LIB_DEF_H_

lib/io.gem

@@ -0,0 +1,53 @@
+# Author: Sven Vogel
+# Edited: 25.05.2024
+# License: GPL-2.0
+
+# ,----------------------------------------.
+# |         Generic Input/Output           |
+# `----------------------------------------`
+
+import "def.gem"
+
+# platform specific handle to an I/O device
+# can a file, buffer, window or something else
+# NOTE: this reference is not meant to be dereferenced
+#       which can lead to errors and undefined behavior
+type ptr: handle
+
+# Returns a handle to this processes standard input I/O handle
+# -- Implementation note
+# On Linux this will return 0 as is it convention under UNIX (see: https://www.man7.org/linux/man-pages/man3/stdin.3.html)
+# On Windows the library will call `GetStdHandle(STD_INPUT_HANDLE)`
+fun getStdinHandle(out handle: stdin)
+
+# Returns a handle to this processes standard input I/O handle
+# -- Implementation note
+# On Linux this will return 1 as is it convention under UNIX (see: https://www.man7.org/linux/man-pages/man3/stdout.3.html)
+# On Windows the library will call `GetStdHandle(STD_OUTPUT_HANDLE)`
+fun getStdoutHandle(out handle: stdout)
+
+# Returns a handle to this processes standard input I/O handle
+# -- Implementation note
+# On Linux this will return 1 as is it convention under UNIX (see: https://www.man7.org/linux/man-pages/man3/stderr.3.html)
+# On Windows the library will call `GetStdHandle(STD_OUTPUT_HANDLE)`
+fun getStderrHandle(out handle: stderr)
+
+# Write `len` number of bytes from `buf` into the I/O resource specified
+# by `dev`. Returns the number of bytes written.
+# -- Implementation note
+# On Linux this will use the syscall write
+# On Windows this will use the WriteFile function
+fun writeBytes(in handle: dev, in ref u8: buf, in ref u32: len)(out u32: written)
+
+# Read atmost `len` bytes to `buf` from the I/O resource specified by `dev`
+# Returns the number of read bytes in `written`
+# -- Implementation note
+# On Linux this will use the syscall read
+# On Windows this will use the ReadFile function
+fun readBytes(in handle: dev, in ref u8: buf, in ref u32: len)(out u32: read)
+
+# Flushes the buffers of the I/O resource specified by `dev`
+# -- Implementation note
+# On Linux this will use the fsync function
+# On Windows this will use the FlushFileBuffers function
+fun flush(in handle: dev)

lib/io/io.c

@@ -0,0 +1,74 @@
+
+#include <io/io.h>
+#include <stdio.h>
+
+#if defined(_WIN32) || defined (_WIN64)
+
+// Compile for Windows
+
+#include <Windows.h>
+
+// FIXME: error in case GetStdHandle return INVALID_HANDLE_VALUE 
+// FIXME: error in case functions return 0 
+
+void getStdinHandle(handle* stdin) {
+    *stdin = (handle) GetStdHandle(STD_INPUT_HANDLE);
+}
+
+void getStdoutHandle(handle* stdout) {
+    *stdout = (handle) GetStdHandle(STD_OUTPUT_HANDLE);
+}
+
+void getStderrHandle(handle* stderr) {
+    *stderr = (handle) GetStdHandle(STD_ERROR_HANDLE);
+}
+
+void writeBytes(handle dev, u8* buf, u32 len, u32* bytesWritten) {
+    WriteFile((HANDLE) dev, buf, len, bytesRead, NULL);
+}
+
+void readBytes(handle dev, u8* buf, u32 len, u32* bytesRead) {
+    ReadFile((HANDLE) dev, buf, len, bytesRead, NULL);
+}
+
+void flush(handle dev) {
+    FlushFileBuffers((HANDLE) dev);
+}
+
+#elif defined(unix) || defined(__unix) || defined(__unix__) || defined(__linux__)
+
+// Compile for Linux and BSD
+
+#include <unistd.h>
+
+// savely cast a 64-bit pointer down to a 32-bit value
+// this assumes that 64-bit system will use 32-bit handles
+// which are stored as 64-bit by zero extending
+#define TO_INT(x) ((int)(long int)(x))
+
+void getStdinHandle(handle* stdin) {
+    *stdin = (handle) STDIN_FILENO;
+}
+
+void getStdoutHandle(handle* stdout) {
+    *stdout = (handle) STDOUT_FILENO;
+}
+
+void getStderrHandle(handle* stderr) {
+    *stderr = (handle) STDERR_FILENO;
+}
+
+void writeBytes(handle dev, u8* buf, u32 len, u32* bytesWritten) {
+    *bytesWritten = write(TO_INT(dev), buf, len);
+}
+
+void readBytes(handle dev, u8* buf, u32 len, u32* bytesRead) {
+    *bytesRead = read(TO_INT(dev), buf, len);
+}
+
+void flush(handle dev) {
+    fsync(TO_INT(dev));
+}
+
+
+#endif

lib/io/io.h

@@ -0,0 +1,21 @@
+
+#ifndef GEMSTONE_STD_LIB_IO_H_
+#define GEMSTONE_STD_LIB_IO_H_
+
+#include <def/def.h>
+
+typedef ptr handle;
+
+void getStdinHandle(handle* stdin);
+
+void getStdoutHandle(handle* stdout);
+
+void getStderrHandle(handle* stderr);
+
+void writeBytes(handle dev, u8* buf, u32 len, u32* written);
+
+void readBytes(handle dev, u8* buf, u32 len, u32* read);
+
+void flush(handle dev);
+
+#endif //GEMSTONE_STD_LIB_IO_H_

lib/std.gem

@@ -7,6 +7,6 @@
 # `----------------------------------------`
 
 # standard type definitions
-import "def/mod.gem"
+import "def.gem"
 
 

run-lib-build.sh

@@ -0,0 +1,30 @@
+#!/bin/sh
+
+# Author: Sven Vogel
+# Created: 25.05.2024
+# Description: Builds the standard library into bin/std
+
+echo "+--------------------------------------+"
+echo "| CONFIGURE STD LIBRARY                |"
+echo "+--------------------------------------+"
+
+cmake lib
+if [ ! $? -eq 0 ]; then
+  echo "===> failed to configure build"
+  exit 1
+fi
+
+echo "+--------------------------------------+"
+echo "| BUILD STD LIBRARY                    |"
+echo "+--------------------------------------+"
+
+cd lib || exit 1
+make -B
+if [ ! $? -eq 0 ]; then
+  echo "===> failed to build standard library"
+  exit 1
+fi
+
+echo "+--------------------------------------+"
+echo "| successfully build standard library  |"
+echo "+--------------------------------------+"