dimgigov
60d4260c93
- C backend: strip c8/c16/c32 string prefixes in emitted C - C backend: resolve imports to fully-qualified names (Std_Io_PrintLine) - Parser: fix infinite loop on < in comparisons vs generic calls - Parser: fix enum patterns without parens (Option::None) - Parser: fix match expressions inside blocks - Sema: extract pattern bindings for match arms - HIR: lower match expressions to if-else chains with enum tag checks - HIR/C backend: support block expressions as function return values - Makefile: add integration tests for all 9 examples - Add pattern_matching.bux example
33 lines
706 B
Plaintext
33 lines
706 B
Plaintext
// Pattern Matching - Match expressions with algebraic enums
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extern func Std_Io_PrintLine(s: String);
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extern func Std_Io_PrintInt(n: int);
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enum Option {
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Some(int),
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None
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}
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func GetValue(opt: Option) -> int {
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match opt {
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Option::Some(value) => opt.data.Some_0,
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Option::None => 0
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}
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}
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func Main() -> int {
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let opt1: Option = Option { tag: Option_Some };
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opt1.data.Some_0 = 42;
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let opt2: Option = Option { tag: Option_None };
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Std_Io_PrintLine("opt1 value: ");
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Std_Io_PrintInt(GetValue(opt1));
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Std_Io_PrintLine("");
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Std_Io_PrintLine("opt2 value: ");
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Std_Io_PrintInt(GetValue(opt2));
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Std_Io_PrintLine("");
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return 0;
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}
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