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Utpl implements C-style if/else conditions and ?: ternary statements.
Like with for- and while-loops, an alternative syntax form suitable
for template blocks is supported.
-- Expect stdout --
This should print "one":
one
This should print "two":
two
Multiple conditions can be used by chaining if/else statements:
three
If the conditional block consists of only one statement, the curly
braces may be omitted:
two
An if-condition using the alternative syntax:
Variable x has another value.
An if-condition using the special "elif" keyword in alternative syntax mode:
Variable x was set to five.
Ternary expressions function similar to if/else statements but
only allow for a single expression in the true and false branches:
Variable x is one
-- End --
-- Testcase --
This should print "one":
{%
x = 0;
if (x == 0) {
print("one");
}
else {
print("two");
}
%}
This should print "two":
{%
x = 1;
if (x == 0) {
print("one");
}
else {
print("two");
}
%}
Multiple conditions can be used by chaining if/else statements:
{%
x = 2;
if (x == 0) {
print("one");
}
else if (x == 1) {
print("two");
}
else if (x == 2) {
print("three");
}
else {
print("four");
}
%}
If the conditional block consists of only one statement, the curly
braces may be omitted:
{%
x = 5;
if (x == 0)
print("one");
else
print("two");
%}
An if-condition using the alternative syntax:
{% if (x == 1): -%}
Variable x was set to one.
{% else -%}
Variable x has another value.
{% endif %}
An if-condition using the special "elif" keyword in alternative syntax mode:
{% if (x == 0): -%}
Variable x was set to zero.
{% elif (x == 1): -%}
Variable x was set to one.
{% elif (x == 5): -%}
Variable x was set to five.
{% else -%}
Variable x has another value.
{% endif %}
Ternary expressions function similar to if/else statements but
only allow for a single expression in the true and false branches:
{%
x = 1;
s = (x == 1) ? "Variable x is one" : "Variable x has another value";
print(s);
%}
-- End --
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