gutter_runner/main_web/main_web_support.odin
2025-01-02 14:18:22 +04:00

120 lines
2.9 KiB
Odin

/*
This file implements logger and temp allocator for the web build. The logger
is based on the one found here: https://github.com/Aronicu/Raylib-WASM/tree/main
*/
#+build wasm32, wasm64p32
package main_web
import "base:runtime"
import "core:c"
import "core:fmt"
import "core:log"
import "core:strings"
// WASM logger
WASM_Logger_Opts :: log.Options{.Level, .Short_File_Path, .Line}
create_wasm_logger :: proc (lowest := log.Level.Debug, opt := WASM_Logger_Opts) -> log.Logger {
return log.Logger{data = nil, procedure = wasm_logger_proc, lowest_level = lowest, options = opt}
}
@(private="file")
wasm_logger_proc :: proc(
logger_data: rawptr,
level: log.Level,
text: string,
options: log.Options,
location := #caller_location
) {
b := strings.builder_make(context.temp_allocator)
strings.write_string(&b, Wasm_Logger_Level_Headers[level])
do_location_header(options, &b, location)
fmt.sbprint(&b, text)
puts(strings.to_cstring(&b))
}
@(private="file")
Wasm_Logger_Level_Headers := [?]string {
0 ..< 10 = "[DEBUG] --- ",
10 ..< 20 = "[INFO ] --- ",
20 ..< 30 = "[WARN ] --- ",
30 ..< 40 = "[ERROR] --- ",
40 ..< 50 = "[FATAL] --- ",
}
@(private="file")
do_location_header :: proc(opts: log.Options, buf: ^strings.Builder, location := #caller_location) {
if log.Location_Header_Opts & opts == nil {
return
}
fmt.sbprint(buf, "[")
file := location.file_path
if .Short_File_Path in opts {
last := 0
for r, i in location.file_path {
if r == '/' {
last = i + 1
}
}
file = location.file_path[last:]
}
if log.Location_File_Opts & opts != nil {
fmt.sbprint(buf, file)
}
if .Line in opts {
if log.Location_File_Opts & opts != nil {
fmt.sbprint(buf, ":")
}
fmt.sbprint(buf, location.line)
}
if .Procedure in opts {
if (log.Location_File_Opts | {.Line}) & opts != nil {
fmt.sbprint(buf, ":")
}
fmt.sbprintf(buf, "%s()", location.procedure)
}
fmt.sbprint(buf, "] ")
}
@(default_calling_convention = "c")
foreign {
puts :: proc(buffer: cstring) -> c.int ---
}
// Temp Allocator
// More or less a copy from base:runtime (that one is disabled in freestanding
// build mode).
WASM_Temp_Allocator :: struct {
arena: runtime.Arena,
}
wasm_temp_allocator_init :: proc(s: ^WASM_Temp_Allocator, size: int, backing_allocator := context.allocator) {
_ = runtime.arena_init(&s.arena, uint(size), backing_allocator)
}
wasm_temp_allocator_proc :: proc(
allocator_data: rawptr,
mode: runtime.Allocator_Mode,
size, alignment: int,
old_memory: rawptr,
old_size: int,
loc := #caller_location) -> (data: []byte, err: runtime.Allocator_Error) {
s := (^WASM_Temp_Allocator)(allocator_data)
return runtime.arena_allocator_proc(&s.arena, mode, size, alignment, old_memory, old_size, loc)
}
wasm_temp_allocator :: proc(allocator: ^WASM_Temp_Allocator) -> runtime.Allocator {
return runtime.Allocator{
procedure = wasm_temp_allocator_proc,
data = allocator,
}
}