dimgigov
61ac06ab5f
Introduce fat function pointers (BuxFn {code, env}) so capturing closures
are heap-allocated per value in both bootstrap and selfhost. Expand
Array/Map/Set/String/Test/Result APIs, add proper tuple codegen and
error snippets with multi-char underlines, golden diagnostic tests, and
LSP diagnostics via buxc check.
73 lines
1.4 KiB
Plaintext
73 lines
1.4 KiB
Plaintext
module Std::Result {
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import Std::Io::{PrintLine};
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extern func bux_exit(code: int);
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enum Result {
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Ok(int),
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Err(String),
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}
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func Result_NewOk(value: int) -> Result {
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let r: Result = Result { tag: Result_Ok };
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r.data.Ok_0 = value;
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return r;
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}
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func Result_NewErr(msg: String) -> Result {
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let r: Result = Result { tag: Result_Err };
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r.data.Err_0 = msg;
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return r;
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}
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func Result_IsOk(r: Result) -> bool {
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return r.tag == Result_Ok;
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}
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func Result_IsErr(r: Result) -> bool {
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return r.tag == Result_Err;
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}
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func Result_Unwrap(r: Result) -> int {
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if r.tag != Result_Ok {
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PrintLine("panic: unwrap on Err");
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return 0;
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}
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return r.data.Ok_0;
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}
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func Result_UnwrapOr(r: Result, fallback: int) -> int {
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if r.tag == Result_Ok {
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return r.data.Ok_0;
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}
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return fallback;
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}
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/* Unwrap Ok or panic with a custom message */
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func Result_Expect(r: Result, msg: String) -> int {
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if r.tag != Result_Ok {
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PrintLine(msg);
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bux_exit(1);
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}
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return r.data.Ok_0;
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}
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/* Extract Err payload (panics if Ok) */
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func Result_UnwrapErr(r: Result) -> String {
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if r.tag != Result_Err {
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PrintLine("panic: unwrap_err on Ok");
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return "";
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}
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return r.data.Err_0;
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}
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/* If r is Ok return it, otherwise return other */
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func Result_Or(r: Result, other: Result) -> Result {
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if r.tag == Result_Ok {
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return r;
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}
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return other;
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}
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}
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