force C function definitions

0.2_roadmap.txt

@@ -19,6 +19,7 @@
 + bring back generics
 - bring back forum/blog and vpm
 - wrap up orm
++ bring back vweb
 - fix vorum, migrate to orm
 - wrap up memory management
 - remove all compiler memory leaks
@@ -42,6 +43,6 @@
 + bare metal support
 + inline assembly
 + x64 machine code generation (ELF)
-- require implicit C.fn definitions, add all missing definitions
+- require explicit C.fn definitions, add all missing definitions
 
 

vlib/builtin/builtin.v

@@ -132,6 +132,7 @@ TODO
 	print_backtrace()
 #endif
 */
+free(C.malloc(n))
 	ptr := C.malloc(n)
 	if isnil(ptr) {
 		panic('malloc($n) failed')

vlib/builtin/cfns.v

@@ -29,6 +29,66 @@ fn C.realpath(byteptr, byteptr) &char
 
 
 
+
+fn C.chmod(byteptr, int)
+fn C.printf(byteptr, ...byteptr)
+fn C.fputs(byteptr)
+fn C.fflush(byteptr) int
+// TODO define args in these functions
+fn C.fseek() int
+fn C.fopen() int
+fn C.fwrite() int
+fn C.fclose() int
+fn C.pclose() int
+fn C.system() int
+fn C.setenv() int
+fn C.unsetenv() int
+fn C.access() int
+fn C.remove() int
+fn C.rmdir() int
+fn C.chdir() int
+fn C.fread() int
+fn C.rewind() int
+fn C.stat() int
+fn C.rename() int
+fn C.fgets() int
+fn C.memset() int
+fn C.sigemptyset() int
+fn C.getcwd() int
+fn C.signal() int
+fn C.mktime() int
+fn C.gettimeofday() int
+fn C.sleep() int
+fn C.usleep() int
+fn C.opendir() voidptr
+fn C.closedir() int
+fn C.mkdir() int
+fn C.srand() int
+fn C.atof() int
+fn C.tolower() int
+fn C.toupper() int
+fn C.getchar() int
+fn C.strerror() *C.char
+fn C.snprintf() int
+fn C.fprintf(byteptr, ...byteptr)
+
+fn C.WIFEXITED() bool
+fn C.WEXITSTATUS() int
+fn C.WIFSIGNALED() bool
+fn C.WTERMSIG() int
+fn C.DEFAULT_LE() bool
+fn C.DEFAULT_EQ() bool
+fn C.DEFAULT_GT() bool
+fn C.DEFAULT_EQUAL() bool
+fn C.DEFAULT_NOT_EQUAL() bool
+fn C.DEFAULT_LT() bool
+fn C.DEFAULT_GE() bool
+fn C.isatty() int
+
+
+
+
+
 // Windows
 fn C._setmode(int, int)
 fn C._fileno(int) int
@@ -42,3 +102,4 @@ fn C.ReadFile(hFile voidptr, lpBuffer voidptr, nNumberOfBytesToRead u32, lpNumbe
 fn C.GetFileAttributesW(lpFileName byteptr) u32
 fn C.RegQueryValueExW(hKey voidptr, lpValueName &u16, lpReserved &u32, lpType &u32, lpData byteptr, lpcbData &u32) int
 fn C.RegOpenKeyExW(hKey voidptr, lpSubKey &u16, ulOptions u32, samDesired u32, phkResult voidptr) int
+fn C.RemoveDirectory() int

vlib/builtin/string.v

@@ -95,6 +95,7 @@ pub fn tos2(s byteptr) string {
 	}
 }
 
+// Same as `tos2`, but for char*, to avoid warnings
 pub fn tos3(s *C.char) string {
 	if s == 0 {
 		panic('tos3: nil string')

vlib/clipboard/clipboard_darwin.v

@@ -37,6 +37,8 @@ fn (cb &Clipboard) has_ownership() bool {
 	return false
 }
 
+fn C.OSAtomicCompareAndSwapLong()
+
 fn (cb &Clipboard) set_text(text string) bool {
 	#NSString *ns_clip;
 	mut ret := false

vlib/compiler/parser.v

@@ -1555,8 +1555,6 @@ fn (p mut Parser) get_const_type(name string, is_ptr bool) string {
 }
 
 fn (p mut Parser) get_c_func_type(name string) string {
-		//p.warn(name + ' ' + p.expected_type)
-	//}
 	f := Fn {
 		name: name
 		is_c: true
@@ -1564,15 +1562,15 @@ fn (p mut Parser) get_c_func_type(name string) string {
 	p.is_c_fn_call = true
 	p.fn_call(mut f, 0, '', '')
 	p.is_c_fn_call = false
-	// Try looking it up. Maybe its defined with "C.fn_name() fn_type",
+	// C functions must be defined with `C.fn_name() fn_type`
-	// then we know what type it returns
 	cfn := p.table.find_fn(name) or {
-		// Not Found? Return 'void*'
+		// Is the user trying to do `var := C.foo()` or `bar(C.foo())`
-		//return 'cvoid' //'void*'
+		// without declaring `foo`?
-		//if p.expected_type != '' && p.expected_type != 'void' {
+		// Do not allow it.
-			//p.warn('\n e=$p.expected_type define imported C function with ' +
+		if !name.starts_with('gl') && !name.starts_with('glad') {
-				//'`fn C.$name([args]) [return_type]`\n')
+		p.error('undefined C function `$f.name`\n' +
-		//}
+			'define it with `fn C.$name([args]) [return_type]`')
+		}
 		return 'void*'
 	}
 	// println("C fn $name has type $cfn.typ")

vlib/compiler/x64/elf.v

@@ -89,7 +89,7 @@ pub fn (g mut Gen) generate_elf_footer() {
 	g.write64_at(file_size, g.file_size_pos+8)
 	// Create the binary
 	f := os.create(g.out_name) or { panic(err) }
-	C.chmod(g.out_name.str, 0775)
+	os.chmod(g.out_name, 0775)
 	f.write_bytes(g.buf.data, g.buf.len)
 	f.close()
 	println('x64 elf binary has been successfully generated')

vlib/crypto/rand/rand_mac.v

@@ -8,6 +8,8 @@ module rand
 
 #flag darwin -framework Security
 
+fn C.SecRandomCopyBytes() int
+
 pub fn read(bytes_needed int) ?[]byte {
 	mut buffer := malloc(bytes_needed)
 	status := C.SecRandomCopyBytes(0, bytes_needed, buffer)

vlib/eventbus/params.v

@@ -43,6 +43,8 @@ pub fn get_array<T>(p Params, name string, def T) []T {
 	return []
 }
 
+fn C.map_set() // TODO remove hack
+
 // TODO: make this a method after generics are fixed.
 pub fn get_map<T>(p Params, name string, valueTyp T) map[string]T {
 	param, _ := p.get_param(name, "")
@@ -55,6 +57,7 @@ pub fn get_map<T>(p Params, name string, valueTyp T) map[string]T {
 		keys = C.new_array_from_c_array_no_alloc(len, len, sizeof(T), param.keys)
 		for i, key in keys {
 			//the most simple way to set map value without knowing the typ
+			// TODO remove
 			C.map_set(&ret, key, param.value + i * sizeof(T))
 		}
 	}

vlib/freetype/freetype.v

@@ -34,6 +34,10 @@ import (
 #include "ft2build.h"
 #include FT_FREETYPE_H
 
+fn C.FT_Init_FreeType() voidptr
+fn C.FT_New_Face() voidptr
+fn C.FT_Set_Pixel_Sizes()
+
 
 
 const (

vlib/gl/1shader.v

@@ -153,6 +153,11 @@ pub fn (s Shader) use() {
 	gl.use_program(s.program_id)
 }
 
+fn C.glGetUniformLocation() int
+fn C.glUniformMatrix4fv()
+fn C.glUniform1i()
+fn C.glUniform3f()
+
 pub fn (s Shader) uni_location(key string) int {
 	return C.glGetUniformLocation(s.program_id, key.str)
 }

vlib/http/backend_nix.v

@@ -27,6 +27,26 @@ struct C.SSL {
 
 }
 
+fn C.SSL_library_init()
+fn C.TLSv1_2_method() voidptr
+fn C.SSL_CTX_set_options()
+fn C.SSL_CTX_new() voidptr
+fn C.SSL_CTX_set_verify_depth()
+fn C.SSL_CTX_load_verify_locations() int
+fn C.BIO_new_ssl_connect() voidptr
+fn C.BIO_set_conn_hostname() int
+fn C.BIO_get_ssl()
+fn C.SSL_set_cipher_list() int
+fn C.BIO_do_connect() int
+fn C.BIO_do_handshake() int
+fn C.SSL_get_peer_certificate() int
+fn C.SSL_get_verify_result() int
+fn C.SSL_set_tlsext_host_name() int
+fn C.BIO_puts()
+fn C.BIO_read()
+fn C.BIO_free_all()
+fn C.SSL_CTX_free()
+
 fn init() int {
 	C.SSL_library_init()
 	return 1

vlib/json/json_primitives.v

@@ -97,6 +97,13 @@ fn jsdecode_string(root &C.cJSON) string {
 	return tos_clone(root.valuestring)// , _strlen(root.valuestring))
 }
 
+fn C.cJSON_IsTrue() bool
+fn C.cJSON_CreateNumber() &C.cJSON
+fn C.cJSON_CreateBool() &C.cJSON
+fn C.cJSON_CreateString() &C.cJSON
+fn C.cJSON_Parse() &C.cJSON
+fn C.cJSON_PrintUnformatted() byteptr
+
 fn jsdecode_bool(root &C.cJSON) bool {
 	if isnil(root) {
 		return false

vlib/math/math.v

@@ -28,6 +28,7 @@ fn C.lgamma(x f64) f64
 fn C.pow(x f64, y f64) f64
 fn C.round(x f64) f64
 fn C.sin(x f64) f64
+fn C.sinh(x f64) f64
 fn C.sqrt(x f64) f64
 fn C.tgamma(x f64) f64
 fn C.tan(x f64) f64

vlib/net/net.v

@@ -1,5 +1,7 @@
 module net
 
+fn C.gethostname() int
+
 // hostname returns the host name reported by the kernel.
 pub fn hostname() ?string {
   	mut name := [256]byte

vlib/net/socket.v

@@ -36,15 +36,31 @@ mut:
 }
 
 struct C.sockaddr_storage {}
+fn C.socket() int
+fn C.setsockopt() int
+fn C.htonl() int
+fn C.htons() int
+fn C.bind() int
+fn C.listen() int
+fn C.accept() int
+fn C.getaddrinfo() int
+fn C.connect() int
+fn C.send() int
+fn C.recv() int
+fn C.read() int
+fn C.shutdown() int
+fn C.close() int
+fn C.ntohs() int
+fn C.getsockname() int
 
 // create socket
-pub fn socket(family int, _type int, proto int) ?Socket {
+pub fn new_socket(family int, _type int, proto int) ?Socket {
 
 	sockfd := C.socket(family, _type, proto)
 	one:=1
 	// This is needed so that there are no problems with reusing the
 	// same port after the application exits.
-	C.setsockopt(sockfd, C.SOL_SOCKET, C.SO_REUSEADDR, &one, sizeof(int))
+	C.setsockopt(sockfd, C.SOL_SOCKET, C.SO_REUSEADDR, &one, 4)//sizeof(int))
 	if sockfd == 0 {
 		return error('net.socket: failed')
 	}
@@ -58,16 +74,16 @@ pub fn socket(family int, _type int, proto int) ?Socket {
 }
 
 pub fn socket_udp() ?Socket {
-	return socket(C.AF_INET, C.SOCK_DGRAM, C.IPPROTO_UDP)
+	return new_socket(C.AF_INET, C.SOCK_DGRAM, C.IPPROTO_UDP)
 }
 
 // set socket options
 pub fn (s Socket) setsockopt(level int, optname int, optvalue &int) ?int {
-	res := C.setsockopt(s.sockfd, level, optname, optvalue, C.sizeof(optvalue))
+	res := C.setsockopt(s.sockfd, level, optname, optvalue, sizeof(int))
 	if res < 0 {
 		return error('net.setsocketopt: failed with $res')
 	}
-	return int(res)
+	return res
 }
 
 // bind socket to port
@@ -77,7 +93,7 @@ pub fn (s Socket) bind(port int) ?int {
 	addr.sin_port = C.htons(port)
 	addr.sin_addr.s_addr = C.htonl(C.INADDR_ANY)
 	size := 16 // sizeof(C.sockaddr_in)
-	res := int(C.bind(s.sockfd, &addr, size))
+	res := C.bind(s.sockfd, &addr, size)
 	if res < 0 {
 		return error('net.bind: failed with $res')
 	}
@@ -87,7 +103,7 @@ pub fn (s Socket) bind(port int) ?int {
 // put socket into passive mode and wait to receive
 pub fn (s Socket) listen() ?int {
 	backlog := 128
-	res := int(C.listen(s.sockfd, backlog))
+	res := C.listen(s.sockfd, backlog)
 	if res < 0 {
 		return error('net.listen: failed with $res')
 	}
@@ -107,7 +123,7 @@ pub fn (s Socket) listen_backlog(backlog int) ?int {
 	if res < 0 {
 		return error('net.listen_backlog: failed with $res')
 	}
-	return int(res)
+	return res
 }
 
 // helper method to create, bind, and listen given port number
@@ -115,7 +131,7 @@ pub fn listen(port int) ?Socket {
 	$if debug {
 		println('net.listen($port)')
 	}
-	s := socket(C.AF_INET, C.SOCK_STREAM, 0) or {
+	s := new_socket(C.AF_INET, C.SOCK_STREAM, 0) or {
 		return error(err)
 	}
 	bind_res := s.bind(port) or {
@@ -167,17 +183,17 @@ pub fn (s Socket) connect(address string, port int) ?int {
 		error_message := os.get_error_msg(net.error_code())
 		return error('net.connect: getaddrinfo failed "$error_message"')
 	}
-	res := int(C.connect(s.sockfd, info.ai_addr, info.ai_addrlen))
+	res := C.connect(s.sockfd, info.ai_addr, info.ai_addrlen)
 	if res < 0 {
 		error_message := os.get_error_msg(net.error_code())
 		return error('net.connect: connect failed "$error_message"')
 	}
-	return int(res)
+	return res
 }
 
 // helper method to create socket and connect
 pub fn dial(address string, port int) ?Socket {
-	s := socket(C.AF_INET, C.SOCK_STREAM, 0) or {
+	s := new_socket(C.AF_INET, C.SOCK_STREAM, 0) or {
 		return error(err)
 	}
 	res := s.connect(address, port) or {
@@ -188,7 +204,7 @@ pub fn dial(address string, port int) ?Socket {
 
 // send string data to socket
 pub fn (s Socket) send(buf byteptr, len int) ?int {
-	res := int( C.send(s.sockfd, buf, len, MSG_NOSIGNAL) )
+	res := C.send(s.sockfd, buf, len, MSG_NOSIGNAL)
 	if res < 0 {
 		return error('net.send: failed with $res')
 	}
@@ -198,18 +214,18 @@ pub fn (s Socket) send(buf byteptr, len int) ?int {
 // receive string data from socket
 pub fn (s Socket) recv(bufsize int) (byteptr, int) {
 	buf := malloc(bufsize)
-	res := int( C.recv(s.sockfd, buf, bufsize, 0) )
+	res := C.recv(s.sockfd, buf, bufsize, 0)
 	return buf, res
 }
 
 // TODO: remove cread/2 and crecv/2 when the Go net interface is done
 pub fn (s Socket) cread( buffer byteptr, buffersize int ) int {
-	return int( C.read(s.sockfd, buffer, buffersize) )
+	return C.read(s.sockfd, buffer, buffersize)
 }
 // Receive a message from the socket, and place it in a preallocated buffer buf,
 // with maximum message size bufsize. Returns the length of the received message.
 pub fn (s Socket) crecv( buffer byteptr, buffersize int ) int {
-	return int( C.recv(s.sockfd, buffer, buffersize, 0) )
+	return C.recv(s.sockfd, buffer, buffersize, 0)
 }
 
 // shutdown and close socket
@@ -250,7 +266,7 @@ pub const (
 // write - write a string with CRLF after it over the socket s
 pub fn (s Socket) write(str string) ?int {
 	line := '$str$CRLF'
-	res := int( C.send(s.sockfd, line.str, line.len, MSG_NOSIGNAL) )
+	res := C.send(s.sockfd, line.str, line.len, MSG_NOSIGNAL)
 	if res < 0 { return error('net.write: failed with $res') }
 	return res
 }
@@ -299,6 +315,6 @@ pub fn (s Socket) read_line() string {
 pub fn (s Socket) get_port() int {
 	mut addr := C.sockaddr_in {}
 	size := 16 // sizeof(sockaddr_in)
-	sockname_res := C.getsockname(s.sockfd, &addr, &size)
+	C.getsockname(s.sockfd, &addr, &size)
-	return int(C.ntohs(addr.sin_port))
+	return C.ntohs(addr.sin_port)
 }

vlib/os/os.v

@@ -1026,3 +1026,8 @@ pub fn tmpdir() string {
 	}
 	return path
 }
+
+
+pub fn chmod(path string, mode int) {
+	C.chmod(path.str, mode)
+}	

vlib/os/os_nix.v

@@ -18,11 +18,11 @@ pub fn init_os_args(argc int, argv &byteptr) []string {
 
 // get_error_msg return error code representation in string.
 pub fn get_error_msg(code int) string {
-	_ptr_text := C.strerror(code) // voidptr?
+	ptr_text := C.strerror(code) // voidptr?
-	if _ptr_text == 0 {
+	if ptr_text == 0 {
 		return ''
 	}
-	return tos(_ptr_text, vstrlen(_ptr_text))
+	return tos3(ptr_text)
 }
 
 pub fn ls(path string) ?[]string {

vlib/sqlite/sqlite.v

@@ -34,6 +34,11 @@ pub fn (db DB) q_int(query string) int {
 }
 
 fn C.sqlite3_column_text(voidptr, int) byteptr
+fn C.sqlite3_column_int(voidptr, int) int
+fn C.sqlite3_open()
+fn C.sqlite3_step() int
+fn C.sqlite3_prepare_v2()
+fn C.sqlite3_finalize()
 
 pub fn (db DB) q_string(query string) string {
 	stmt := &C.sqlite3_stmt{!}

vlib/stbi/stbi.v

@@ -21,6 +21,10 @@ mut:
 	ext         string
 }
 
+fn C.stbi_load() voidptr
+fn C.stbi_image_free()
+fn C.stbi_set_flip_vertically_on_load()
+
 pub fn load(path string) Image {
 	ext := path.all_after('.')
 	mut res := Image {

vlib/sync/sync_nix.v

@@ -6,6 +6,11 @@ module sync
 
 #include <pthread.h>
 
+fn C.pthread_mutex_init()
+fn C.pthread_mutex_lock()
+fn C.pthread_mutex_unlock()
+
+
 //[init_with=new_mutex] // TODO: implement support for this struct attribute, and disallow Mutex{} from outside the sync.new_mutex() function.
 pub struct Mutex {
 	mutex C.pthread_mutex_t