#!/usr/bin/env catnip
# Syntaxes d'affectation en Catnip
# Affectation de variables, d'attributs, et par index

types = import('types')

# Affectation simple

print("⇒ Affectation simple")
x = 10
y = 20
print("  x =", x, "| y =", y)

# Affectation chaînée

print()
print("⇒ Affectation chaînée")
a = b = c = 42
print("  a =", a, "| b =", b, "| c =", c)

# Unpacking

print()
print("⇒ Unpacking")
(first, second) = tuple(1, 2)
print("  first =", first, "| second =", second)

head, *rest = list(1, 2, 3, 4, 5)
print("  head =", head, "| rest =", rest)

# Affectation d'attributs

print()
print("⇒ Affectation d'attributs")
obj = types.SimpleNamespace()
obj.name = "Alice"
obj.age = 30
print(f"  obj.name = {obj.name}")
print(f"  obj.age = {obj.age}")

# Chaînes d'attributs

print()
print("⇒ Chaînes d'attributs")
obj.address = types.SimpleNamespace()
obj.address.city = "Paris"
obj.address.zip = "75001"
print(f"  obj.address.city = {obj.address.city}")

# Affectation par index (dict)

print()
print("⇒ Affectation par index (dict)")
config = dict()
config['host'] = "localhost"
config['port'] = 8080
config['debug'] = True
print(f"  config = {config}")

# Affectation par index (list)

print()
print("⇒ Affectation par index (list)")
items = list(0, 0, 0, 0, 0)
items[0] = 10
items[2] = 30
items[4] = 50
print(f"  items = {items}")

# Combinaison : attribut puis index

print()
print("⇒ Combinaison attribut + index")
data = types.SimpleNamespace()
data.values = dict()
data.values['x'] = 100
data.values['y'] = 200
print(f"  data.values = {data.values}")

# Modification in-place depuis une fonction

print()
print("⇒ Modification globale via index")
state = dict(count=0)

increment = () => {
    state['count'] = state['count'] + 1
}

print("  Avant:", state['count'])
increment()
increment()
increment()
print("  Après 3 increments:", state['count'])