// zclsp --annotate writes the types the compiler can see into a program that // has none. this one has none: locals take the type of what they start as, a // parameter takes the type every call gives it, and a function the type of // what it returns. what it can't tell it leaves alone (twice is called with // a plain word, so its parameter stays), and the program still means the // same thing: tests/test.sh runs both and compares. include "src/lib/std.zc"; struct point { int x, y; }; int calls = 0; char* name = "annotate"; int table[4]; int add(int a, int b) { calls = calls + 1; return a + b; } point* scale(point* p, int k) { p.x = p.x * k; p.y = p.y * k; return p; } point*.u fresh(int x, int y) { point* p = new(point); p.x = x; p.y = y; return u*p; } int twice(int v) { return v + v; } fn len3(char* s) { return len_w(s) + 3; } fn half(f) { return f / 2.0; } int main() { int i = 0, sum = 0, buf[6]; let word_ = table, text = "abc"; point* pt = fresh(2, 3); let r = 1.5; while (i < 4) { table[i] = add(i, 10); sum = sum + table[i]; i++; } scale(pt, 3); buf[0] = twice(sum); put_n(sum); put_c(32); put_n(pt.x + pt.y); put_c(32); put_n(buf[0]); put_c(32); put_n(len3(text)); put_c(32); put_n(calls); put_c(32); put_n(half(r) * 4); put_c(10); return 0; }