dimgigov
53b43b0f79
Ship the QUALITY_PLAN stretch from ownership through ecosystem: C.1 lifetime elision (bootstrap + selfhost), bux fmt/test/doc CI hooks, stdlib goldens, package registry (bux search/add), and LSP 0.4 position-sensitive locals with inferred let types. Full-tree format pass plus Map/Set remove double-free fix.
59 lines
1.2 KiB
Plaintext
59 lines
1.2 KiB
Plaintext
// Try operator ? - Error propagation
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import Std::Io::{PrintLine, PrintInt};
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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 Divide(a: int, b: int) -> Result {
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if b == 0 {
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return Result_NewErr("division by zero");
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}
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return Result_NewOk(a / b);
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}
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func Compute() -> Result {
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let x: int = Divide(10, 2)?;
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let y: int = Divide(x, 5)?;
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return Result_NewOk(y);
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}
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func ComputeWithError() -> Result {
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let x: int = Divide(10, 0)?;
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let y: int = Divide(x, 5)?;
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return Result_NewOk(y);
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}
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func Main() -> int {
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PrintLine("Try operator demo:");
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let r1: Result = Compute();
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if r1.tag == Result_Ok {
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PrintLine("Compute() = ");
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PrintInt(r1.data.Ok_0);
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PrintLine("");
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} else {
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PrintLine("Compute() failed");
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}
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let r2: Result = ComputeWithError();
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if r2.tag == Result_Err {
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PrintLine("ComputeWithError() failed as expected");
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}
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return 0;
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}
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