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Chris Tate
370bf5962d
Library exports and callbacks passed text only as a pointer and length. profile_format 2 adds the cstring class, a NUL-terminated `const char *` (an i32 pointer in Wasm reactors), for export parameters, export results and callback parameters. Parameters are copied in and decoded as UTF-8, with U+FFFD for malformed bytes; a NULL pointer is the SC4012 host-contract trap. Results live in the result arena like string results. A result or callback argument containing U+0000 traps instead of being truncated. Closes #615 Co-authored-by: ailuoku6 <23209876+ailuoku6@users.noreply.github.com>
27 lines
628 B
TypeScript
27 lines
628 B
TypeScript
// cstring conformance fixture: NUL-terminated text in both directions and
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// through a callback channel. `withNul` and `echoNul` produce text holding
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// U+0000, which a C string cannot carry.
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declare function log(text: string, n: number): void;
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export function greet(name: string): string {
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return `hello, ${name}!`;
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}
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export function length(text: string): number {
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return text.length;
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}
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export function echo(text: string): number {
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log(text.toUpperCase(), text.length);
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return 1;
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}
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export function withNul(): string {
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return "a\u0000b";
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}
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export function echoNul(): number {
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log("x\u0000y", 3);
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return 1;
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}
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