99 lines
1.8 KiB
V
99 lines
1.8 KiB
V
module builtin
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// used to generate JS throw statements.
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pub fn js_throw(s any) {
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#throw s
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}
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#let globalPrint;
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$if js_freestanding {
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#globalPrint = globalThis.print
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}
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pub fn println(s string) {
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$if js_freestanding {
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#globalPrint(s.str)
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} $else {
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#console.log(s.str)
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}
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}
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pub fn print(s string) {
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$if js_node {
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#$process.stdout.write(s.str)
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} $else {
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panic('Cannot `print` in a browser, use `println` instead')
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}
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}
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pub fn eprintln(s string) {
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$if js_freestanding {
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#globalPrint(s.str)
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} $else {
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#console.error(s.str)
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}
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}
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pub fn eprint(s string) {
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$if js_node {
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#$process.stderr.write(s.str)
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} $else {
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panic('Cannot `eprint` in a browser, use `println` instead')
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}
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}
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// Exits the process in node, and halts execution in the browser
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// because `process.exit` is undefined. Workaround for not having
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// a 'real' way to exit in the browser.
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pub fn exit(c int) {
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JS.process.exit(c)
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js_throw('exit($c)')
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}
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fn opt_ok(data voidptr, option Option) {
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#option.state = 0
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#option.err = none__
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#option.data = data
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}
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pub fn unwrap(opt string) string {
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mut o := Option{}
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#o = opt
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if o.state != 0 {
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js_throw(o.err)
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}
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mut res := ''
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#res = opt.data
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return res
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}
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fn js_stacktrace() string {
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stacktrace := ''
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#let err = new TypeError();
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#err.name = 'stacktrace: '
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#stacktrace.str = err.stack
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return stacktrace
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}
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// Check for nil value
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pub fn isnil(val voidptr) bool {
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res := false
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// This one is kinda weird. In C and native backend we can cast booleans and integers to pointers
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// so we just check *for* all possible NULL-like values here.
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#val = val.valueOf()
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#res.val = val === null || val === undefined || val === false || val === 0 || val === BigInt(0)
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return res
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}
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pub fn (f float_literal) str() string {
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res := ''
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#res.str += f.valueOf()
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return res
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}
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