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[css-typed-om] Add shortcuts for other arithmetic operations #559

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merged 1 commit into from
Jan 16, 2018
Merged

[css-typed-om] Add shortcuts for other arithmetic operations #559

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54 changes: 46 additions & 8 deletions css-typed-om/Overview.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -725,7 +725,7 @@ The following are the arithmetic operations you can perform on dimensions:
with the same {{CSSUnitValue/unit}} internal slot as |this|,
and a {{CSSUnitValue/value}} internal slot set to the negation of |this|’s.

2. Otherwise,
3. Otherwise,
return a new {{CSSMathNegate}} object
whose {{CSSMathNegate/value}} internal slot
is set to |this|.
Expand All @@ -745,11 +745,28 @@ The following are the arithmetic operations you can perform on dimensions:
Otherwise,
prepend |this| to |values|.

3. Let |type| be the result of [=multiplying=] the [=types=] of every [=list/item=] in |values|.
3. If all of the [=list/items=] in |values| are {{CSSUnitValue}}s
with {{CSSUnitValue/unit}} internal slot set to "number",
return a new {{CSSUnitValue}}
whose {{CSSUnitValue/unit}} internal slot is set to "number",
and {{CSSUnitValue/value}} internal slot is set to the product of
the {{CSSUnitValue/value}} internal slots
of the [=list/items=] in |values|.

4. If all of the [=list/items=] in |values| are {{CSSUnitValue}}s
with {{CSSUnitValue/unit}} internal slot set to "number"
except one which is set to |unit|,
return a new {{CSSUnitValue}}
whose {{CSSUnitValue/unit}} internal slot is set to |unit|,
and {{CSSUnitValue/value}} internal slot is set to the product of
the {{CSSUnitValue/value}} internal slots
of the [=list/items=] in |values|.

5. Let |type| be the result of [=multiplying=] the [=types=] of every [=list/item=] in |values|.
If |type| is failure,
[=throw=] a {{TypeError}}.

5. Return a new {{CSSMathProduct}} object
6. Return a new {{CSSMathProduct}} object
whose {{CSSMathProduct/values}} internal slot
is set to |values|.
</div>
Expand All @@ -773,7 +790,12 @@ The following are the arithmetic operations you can perform on dimensions:
1. If |this| is a {{CSSMathInvert}} object,
return |this|’s {{CSSMathInvert/value}} internal slot.

2. Otherwise,
2. If |this| is a {{CSSUnitValue}} object with {{CSSUnitValue/unit}} internal slot set to "number",
return a new {{CSSUnitValue}}
with the {{CSSUnitValue/unit}} internal slot set to "number",
and a {{CSSUnitValue/value}} internal slot set to the inverse of |this|’s.

3. Otherwise,
return a new {{CSSMathInvert}} object
whose {{CSSMathInvert/value}} internal slot
is set to |this|.
Expand All @@ -793,11 +815,19 @@ The following are the arithmetic operations you can perform on dimensions:
Otherwise,
prepend |this| to |values|.

3. Let |type| be the result of [=adding=] the [=types=] of every [=list/item=] in |values|.
3. If all of the [=list/items=] in |values| are {{CSSUnitValue}}s
and have the same {{CSSUnitValue/unit}},
return a new {{CSSUnitValue}}
whose {{CSSUnitValue/unit}} internal slot is set to |this|’s {{CSSUnitValue/unit}} internal slot,
and {{CSSUnitValue/value}} internal slot is set to the minimum of
the {{CSSUnitValue/value}} internal slots
of the [=list/items=] in |values|.

4. Let |type| be the result of [=adding=] the [=types=] of every [=list/item=] in |values|.
If |type| is failure,
[=throw=] a {{TypeError}}.

4. Return a new {{CSSMathMin}} object
5. Return a new {{CSSMathMin}} object
whose {{CSSMathMin/values}} internal slot
is set to |values|.
</div>
Expand All @@ -816,11 +846,19 @@ The following are the arithmetic operations you can perform on dimensions:
Otherwise,
prepend |this| to |values|.

3. Let |type| be the result of [=adding=] the [=types=] of every [=list/item=] in |values|.
3. If all of the [=list/items=] in |values| are {{CSSUnitValue}}s
and have the same {{CSSUnitValue/unit}},
return a new {{CSSUnitValue}}
whose {{CSSUnitValue/unit}} internal slot is set to |this|’s {{CSSUnitValue/unit}} internal slot,
and {{CSSUnitValue/value}} internal slot is set to the maximum of
the {{CSSUnitValue/value}} internal slots
of the [=list/items=] in |values|.

4. Let |type| be the result of [=adding=] the [=types=] of every [=list/item=] in |values|.
If |type| is failure,
[=throw=] a {{TypeError}}.

4. Return a new {{CSSMathMax}} object
5. Return a new {{CSSMathMax}} object
whose {{CSSMathMax/values}} internal slot
is set to |values|.
</div>
Expand Down