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ww/selfhost/test/sym_link.ww

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// selfhost/test/sym_link.ww — link-and-run probe for the ww-cgen
// against the sym/typ/ast/mem dep stack. Exercises arena (mem),
// hashtable scope (sym), and pulls in typ/ast as type carriers.
// Returns 42 on success; smaller values name the probe that broke.
use mem;
use typ;
use ast;
use sym;
export fn main() i32 = {
let a: *arena = newarena();
if (a == nil) { return 1; };
let s: *scope = newscope(a, nil);
if (s == nil) { return 2; };
let n1: str = "foo";
let r1: *sym = scopedefine(s, n1, SK_VAR, nil, nil);
if (r1 == nil) { return 3; };
let n2: str = "bar";
let r2: *sym = scopedefine(s, n2, SK_TYPE, nil, nil);
if (r2 == nil) { return 4; };
// Duplicate define in same scope must fail.
let r3: *sym = scopedefine(s, n1, SK_VAR, nil, nil);
if (r3 != nil) { return 5; };
let l1: *sym = scopelookup(s, n1);
if (l1 == nil) { return 6; };
if (l1.skind != SK_VAR) { return 7; };
let l2: *sym = scopelookup(s, n2);
if (l2 == nil) { return 8; };
if (l2.skind != SK_TYPE) { return 9; };
// Not-found lookup returns nil.
let n3: str = "baz";
let l3: *sym = scopelookup(s, n3);
if (l3 != nil) { return 10; };
freearena(a);
return 42;
};