298 lines
6.3 KiB
V
298 lines
6.3 KiB
V
// Copyright (c) 2019-2020 Alexander Medvednikov. All rights reserved.
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// Use of this source code is governed by an MIT license
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// that can be found in the LICENSE file.
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module builtin
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__global (
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g_m2_buf byteptr
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g_m2_ptr byteptr
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)
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type FnExitCb = fn()
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fn C.atexit(f FnExitCb) int
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pub fn exit(code int) {
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C.exit(code)
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}
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// isnil returns true if an object is nil (only for C objects).
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pub fn isnil(v voidptr) bool {
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return v == 0
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}
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/*
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fn on_panic(f fn(int)int) {
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// TODO
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}
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*/
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pub fn print_backtrace() {
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// at the time of backtrace_symbols_fd call, the C stack would look something like this:
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// 1 frame for print_backtrace_skipping_top_frames
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// 1 frame for print_backtrace itself
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// ... print the rest of the backtrace frames ...
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// => top 2 frames should be skipped, since they will not be informative to the developer
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print_backtrace_skipping_top_frames(2)
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}
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// replaces panic when -debug arg is passed
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fn panic_debug(line_no int, file string, mod string, fn_name string, s string) {
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// NB: the order here is important for a stabler test output
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// module is less likely to change than function, etc...
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// During edits, the line number will change most frequently,
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// so it is last
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eprintln('================ V panic ================')
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eprintln(' module: $mod')
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eprintln(' function: ${fn_name}()')
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eprintln(' message: $s')
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eprintln(' file: $file')
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eprintln(' line: ' + line_no.str())
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eprintln('=========================================')
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// recent versions of tcc print better backtraces automatically
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$if !tinyc {
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print_backtrace_skipping_top_frames(1)
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}
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break_if_debugger_attached()
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C.exit(1)
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}
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pub fn panic(s string) {
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eprintln('V panic: $s')
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// recent versions of tcc print better backtraces automatically
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$if !tinyc {
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print_backtrace()
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}
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break_if_debugger_attached()
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C.exit(1)
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}
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pub fn eprintln(s string) {
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// eprintln is used in panics, so it should not fail at all
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if s.str == 0 {
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eprintln('eprintln(NIL)')
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}
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C.fflush(C.stdout)
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C.fflush(C.stderr)
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C.write(2, s.str, s.len)
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C.write(2, c'\n', 1)
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C.fflush(C.stderr)
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}
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pub fn eprint(s string) {
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if s.str == 0 {
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eprintln('eprint(NIL)')
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}
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C.fflush(C.stdout)
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C.fflush(C.stderr)
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C.write(2, s.str, s.len)
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C.fflush(C.stderr)
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}
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pub fn print(s string) {
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C.write(1, s.str, s.len)
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}
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const (
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new_line_character = '\n'
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)
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//#include "@VROOT/vlib/darwin/darwin.m"
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//fn C.nsstring2(s string) voidptr
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//fn C.NSLog(x voidptr)
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//#include <asl.h>
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fn C.asl_log(voidptr, voidptr, int, charptr)
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pub fn println(s string) {
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$if windows {
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print(s)
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print(new_line_character)
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} $else {
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// For debugging .app applications (no way to read stdout) so that it's printed to macOS Console
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/*
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$if macos {
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C.asl_log(0, 0, C.ASL_LEVEL_ERR, s.str)
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}
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*/
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// TODO: a syscall sys_write on linux works, except for the v repl.
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// Probably it is a stdio buffering issue. Needs more testing...
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// $if linux {
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// $if !android {
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// snl := s + '\n'
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// C.syscall(/* sys_write */ 1, /* stdout_value */ 1, snl.str, s.len+1)
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// return
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// }
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// }
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C.printf('%.*s\n', s.len, s.str)
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}
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}
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__global (
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total_m = i64(0)
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nr_mallocs = int(0)
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)
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[unsafe]
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pub fn malloc(n int) byteptr {
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if n <= 0 {
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panic('malloc(<=0)')
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}
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$if prealloc {
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//println('p')
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res := g_m2_ptr
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unsafe {
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g_m2_ptr += n
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}
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nr_mallocs++
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return res
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} $else {
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ptr := unsafe {C.malloc(n)}
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if ptr == 0 {
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panic('malloc($n) failed')
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}
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return ptr
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}
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/*
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TODO
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#ifdef VPLAY
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if n > 10000 {
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panic('allocating more than 10 KB is not allowed in the playground')
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}
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#endif
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#ifdef DEBUG_ALLOC
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total_m += n
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println('\n\n\nmalloc($n) total=$total_m')
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print_backtrace()
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#endif
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*/
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}
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//#include <malloc/malloc.h>
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//fn malloc_size(b byteptr) int
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[unsafe]
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pub fn v_realloc(b byteptr, n u32) byteptr {
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$if prealloc {
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unsafe {
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new_ptr := malloc(int(n))
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size := 0 //malloc_size(b)
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C.memcpy(new_ptr, b, size)
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return new_ptr
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}
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} $else {
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ptr := unsafe {C.realloc(b, n)}
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if ptr == 0 {
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panic('realloc($n) failed')
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}
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return ptr
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}
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}
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[unsafe]
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pub fn v_calloc(n int) byteptr {
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return C.calloc(1, n)
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}
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[unsafe]
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pub fn vcalloc(n int) byteptr {
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if n < 0 {
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panic('calloc(<=0)')
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} else if n == 0 {
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return byteptr(0)
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}
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return C.calloc(1, n)
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}
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[unsafe]
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pub fn free(ptr voidptr) {
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$if prealloc {
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return
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}
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C.free(ptr)
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}
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pub fn memdup(src voidptr, sz int) voidptr {
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if sz == 0 {
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return vcalloc(1)
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}
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unsafe {
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mem := malloc(sz)
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return C.memcpy(mem, src, sz)
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}
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}
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fn v_ptr_free(ptr voidptr) {
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$if prealloc {
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return
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}
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C.free(ptr)
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}
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pub fn is_atty(fd int) int {
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$if windows {
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mut mode := u32(0)
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osfh := voidptr(C._get_osfhandle(fd))
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C.GetConsoleMode(osfh, voidptr(&mode))
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return int(mode)
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} $else {
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return C.isatty(fd)
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}
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}
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fn __as_cast(obj voidptr, obj_type int, expected_type int) voidptr {
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if obj_type != expected_type {
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panic('as cast: cannot cast $obj_type to $expected_type')
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}
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return obj
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}
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// VAssertMetaInfo is used during assertions. An instance of it
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// is filled in by compile time generated code, when an assertion fails.
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pub struct VAssertMetaInfo {
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pub:
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fpath string // the source file path of the assertion
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line_nr int // the line number of the assertion
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fn_name string // the function name in which the assertion is
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src string // the actual source line of the assertion
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op string // the operation of the assertion, i.e. '==', '<', 'call', etc ...
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llabel string // the left side of the infix expressions as source
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rlabel string // the right side of the infix expressions as source
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lvalue string // the stringified *actual value* of the left side of a failed assertion
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rvalue string // the stringified *actual value* of the right side of a failed assertion
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}
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fn __print_assert_failure(i &VAssertMetaInfo) {
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eprintln('${i.fpath}:${i.line_nr+1}: FAIL: fn ${i.fn_name}: assert ${i.src}')
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if i.op.len > 0 && i.op != 'call' {
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eprintln(' left value: ${i.llabel} = ${i.lvalue}')
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if i.rlabel == i.rvalue {
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eprintln(' right value: $i.rlabel')
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}
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else {
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eprintln(' right value: ${i.rlabel} = ${i.rvalue}')
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}
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}
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}
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pub struct MethodArgs {
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pub:
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typ int
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}
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pub struct FunctionData {
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pub:
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name string
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attrs []string
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args []MethodArgs
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return_type int
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typ int
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}
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pub struct FieldData {
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pub:
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name string
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attrs []string
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is_pub bool
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is_mut bool
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typ int
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}
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