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assert!

This commit is contained in:
shikhin 2023-12-07 15:37:20 -05:00
parent c1a808a807
commit 0fd38d2888
1 changed files with 9 additions and 7 deletions
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16
public/main.js
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@ -294,10 +294,12 @@ function enter_matrix() {
try {
entries = JSON.parse(atob(matrix))
assert(Array.isArray(entries))
assert(entries.length == 2 * dim * dim)
if (!Array.isArray(entries)) { throw new Error("Bad object") }
if (entries.length != 2 * dim * dim) { throw new Error("Bad length") }
for (let i = 0; i < 2 * dim * dim; i++) {
assert(!isNaN(entries[i]) && -3 < entries[i] && entries[i] < 3)
if (isNaN(entries[i]) || -3 > entries[i] || entries[i] > 3) {
throw new Error("Bad entries")
}
}
matrix_entries = entries
@ -358,10 +360,10 @@ function input_update(e) {
const i = row * dim * 2 + col * 2;
try {
let [real, imag] = input.value.split('+');
real = Number(real);
imag = Number(imag.replace(/i$/, ''));
assert(!isNaN(real) && -3 < real && real < 3);
assert(!isNaN(imag) && -3 < imag && imag < 3);
real = Number(real)
imag = Number(imag.replace(/i$/, ''))
if (isNaN(real) || -3 > real || real > 3) { throw new Error("Bad real part") }
if (isNaN(imag) || -3 > imag || imag > 3) { throw new Error("Bad imaginary part") }
matrix_entries[i] = real;
matrix_entries[i+1] = imag;
p_draw()