Initial implementation of mixin guard default function (aka "mutually exclusive guards")

This commit is contained in:
seven-phases-max
2013-10-19 19:12:49 +04:00
parent 3818727bf7
commit 6d3414d217
7 changed files with 397 additions and 35 deletions

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@@ -0,0 +1,114 @@
guard-default-basic-1-1 {
case: 1;
}
guard-default-basic-1-2 {
default: 2;
}
guard-default-basic-2-0 {
default: 0;
}
guard-default-basic-2-2 {
case: 2;
}
guard-default-basic-3-0 {
default: 0;
}
guard-default-basic-3-2 {
case: 2;
}
guard-default-basic-3-3 {
case: 3;
}
guard-default-definition-order-0 {
default: 0;
}
guard-default-definition-order-2 {
case: 2;
}
guard-default-definition-order-2 {
case: 3;
}
guard-default-out-of-guard-0 {
case-0: default();
case-1: 1;
default: 2;
case-2: default();
}
guard-default-out-of-guard-1 {
default: default();
}
guard-default-out-of-guard-2 {
default: default();
}
guard-default-expr-not-1 {
case: 1;
default: 1;
}
guard-default-expr-eq-true {
case: true;
}
guard-default-expr-eq-false {
case: false;
default: false;
}
guard-default-expr-or-1 {
case: 1;
}
guard-default-expr-or-2 {
case: 2;
default: 2;
}
guard-default-expr-or-3 {
default: 3;
}
guard-default-expr-and-1 {
case: 1;
}
guard-default-expr-and-2 {
case: 2;
}
guard-default-expr-and-3 {
default: 3;
}
guard-default-expr-always-1 {
case: 1;
default: 1;
}
guard-default-expr-always-2 {
default: 2;
}
guard-default-expr-never-1 {
case: 1;
}
guard-default-multi-1-0 {
case: 0;
}
guard-default-multi-1-1 {
default-1: 1;
}
guard-default-multi-2-1 {
default-1: no;
}
guard-default-multi-2-2 {
default-2: no;
}
guard-default-multi-2-3 {
default-3: 3;
}
guard-default-multi-3-blue {
case-2: #00008b;
}
guard-default-multi-3-green {
default-color: #008000;
}
guard-default-multi-3-foo {
case-1: I am 'foo';
}
guard-default-multi-3-baz {
default-string: I am 'baz';
}
guard-default-multi-4 {
always: 1;
always: 2;
case: 2;
}

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guard-default-func-conflict {
.m(@x, @y) {}
.m(@x, 2) when (default()) {}
.m(@x, 2) when (default()) {}
.m(1, 1);
.m(1, 2);
}

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RuntimeError: Ambiguous use of `default()` found when matching for `.m(1, 2)` in {path}mixins-guards-default-func-1.less on line 8, column 5:
7 .m(1, 1);
8 .m(1, 2);
9 }

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guard-default-func-conflict {
.m(1) {}
.m(@x) when not(default()) {}
.m(@x) when (@x = 3) and (default()) {}
.m(2);
.m(3);
}

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RuntimeError: Ambiguous use of `default()` found when matching for `.m(3)` in {path}mixins-guards-default-func-2.less on line 8, column 5:
7 .m(2);
8 .m(3);
9 }

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// basics:
guard-default-basic-1 {
.m(1) {case: 1}
.m(@x) when (default()) {default: @x}
&-1 {.m(1)}
&-2 {.m(2)}
}
guard-default-basic-2 {
.m(1) {case: 1}
.m(2) {case: 2}
.m(3) {case: 3}
.m(@x) when (default()) {default: @x}
&-0 {.m(0)}
&-2 {.m(2)}
}
guard-default-basic-3 {
.m(@x) when (@x = 1) {case: 1}
.m(2) {case: 2}
.m(@x) when (@x = 3) {case: 3}
.m(@x) when (default()) {default: @x}
&-0 {.m(0)}
&-2 {.m(2)}
&-3 {.m(3)}
}
guard-default-definition-order {
.m(@x) when (default()) {default: @x}
.m(@x) when (@x = 1) {case: 1}
.m(2) {case: 2}
.m(@x) when (@x = 3) {case: 3}
&-0 {.m(0)}
&-2 {.m(2)}
&-2 {.m(3)}
}
// out of guard:
guard-default-out-of-guard {
.m(1) {case-1: 1}
.m(@x: default()) when (default()) {default: @x}
&-0 {
case-0: default();
.m(1);
.m(2);
case-2: default();
}
&-1 {.m(default())}
&-2 {.m()}
}
// expressions:
guard-default-expr-not {
.m(1) {case: 1}
.m(@x) when not(default()) {default: @x}
&-1 {.m(1)}
&-2 {.m(2)}
}
guard-default-expr-eq {
.m(@x) when (@x = true) {case: @x}
.m(@x) when (@x = false) {case: @x}
.m(@x) when (@x = default()) {default: @x}
&-true {.m(true)}
&-false {.m(false)}
}
guard-default-expr-or {
.m(1) {case: 1}
.m(2) {case: 2}
.m(@x) when (default()), (@x = 2) {default: @x}
&-1 {.m(1)}
&-2 {.m(2)}
&-3 {.m(3)}
}
guard-default-expr-and {
.m(1) {case: 1}
.m(2) {case: 2}
.m(@x) when (default()) and (@x = 3) {default: @x}
&-1 {.m(1)}
&-2 {.m(2)}
&-3 {.m(3)}
&-4 {.m(4)}
}
guard-default-expr-always {
.m(1) {case: 1}
.m(@x) when (default()), not(default()) {default: @x} // always match
&-1 {.m(1)}
&-2 {.m(2)}
}
guard-default-expr-never {
.m(1) {case: 1}
.m(@x) when (default()) and not(default()) {default: @x} // never match
&-1 {.m(1)}
&-2 {.m(2)}
}
// not conflicting multiple default() uses:
guard-default-multi-1 {
.m(0) {case: 0}
.m(@x) when (default()) {default-1: @x}
.m(2) when (default()) {default-2: @x}
&-0 {.m(0)}
&-1 {.m(1)}
}
guard-default-multi-2 {
.m(1, @x) when (default()) {default-1: @x}
.m(2, @x) when (default()) {default-2: @x}
.m(@x, yes) when (default()) {default-3: @x}
&-1 {.m(1, no)}
&-2 {.m(2, no)}
&-3 {.m(3, yes)}
}
guard-default-multi-3 {
.m(red) {case-1: darkred}
.m(blue) {case-2: darkblue}
.m(@x) when (iscolor(@x)) and (default()) {default-color: @x}
.m('foo') {case-1: I am 'foo'}
.m('bar') {case-2: I am 'bar'}
.m(@x) when (isstring(@x)) and (default()) {default-string: I am @x}
&-blue {.m(blue)}
&-green {.m(green)}
&-foo {.m('foo')}
&-baz {.m('baz')}
}
guard-default-multi-4 {
.m(@x) when (default()), not(default()) {always: @x}
.m(@x) when (default()) and not(default()) {never: @x}
.m(2) {case: 2}
.m(1);
.m(2);
}