Disallow an invalid expression within calc
functions.
.foo {width: calc();}
/** ↑
* empty expression */
.foo {width: calc(100% 80px);}
/** ↑
/* missing operator */
.foo {width: calc(100% -80px);}
/** ↑
/* missing operator */
.foo {width: calc(100% - - 80px);}
/** ↑
/* unexpected operator */
.foo {width: calc(100% -);}
/** ↑
/* unexpected operator */
.foo {width: calc(- 100%);}
/** ↑
/* unexpected operator */
.foo {width: calc(100% / 0);}
/** ↑ ↑
/* division by zero */
.foo {width: calc(100px + 80);}
/** ↑ ↑ ↑
/* the `resolved type` is invalid */
.foo {width: calc(100% + 80);}
/** ↑ ↑ ↑
/* the `resolved type` is invalid */
.foo {width: calc(100px - 80);}
/** ↑ ↑ ↑
/* the `resolved type` is invalid */
.foo {width: calc(100px * 80px);}
/** ↑ ↑ ↑
/* the `resolved type` is invalid */
.foo {width: calc(100 / 80%);}
/** ↑ ↑ ↑
/* the `resolved type` is invalid */
calc()
must have an expression.calc()
must have an operator between the arguments.calc()
must not be division by zero.true
The following patterns are considered violations:
.foo {width: calc();}
.foo {width: calc(100% 80px);}
.foo {width: calc(100% - - 80px);}
.foo {width: calc(100% / 0);}
.foo {width: calc(100px + 80);}
The following patterns are not considered violations:
.foo {width: calc(100% - 80px);}
.foo {width: calc(100% - var(--bar));}
.foo {width: calc(var(--bar) - var(--baz));}