Add nicer API based on a CodePoint class
#18
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kotlin-codepoints-deluxe/src/commonMain/kotlin/CodePointSequence.kt
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| /** | ||
| * `true` if this code point is a surrogate code unit. | ||
| */ | ||
| val isSurrogate: Boolean | ||
| get() = !isSupplementary && value.toChar().isSurrogate() | ||
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| /** | ||
| * `true` if this code point is a high surrogate code unit. | ||
| */ | ||
| val isHighSurrogate: Boolean | ||
| get() = !isSupplementary && value.toChar().isHighSurrogate() | ||
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| /** | ||
| * `true` if this code point is a low surrogate code unit. | ||
| */ | ||
| val isLowSurrogate: Boolean | ||
| get() = !isSupplementary && value.toChar().isLowSurrogate() |
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What would these be used for? They seem to go against my intuition of what a code point is since I thought they were exclusively properties of characters.
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I think of the value of a code point as the index into the Unicode data table. Surrogate characters are part of that table, too.
Most of the time we don't care about surrogate pairs and want to get the code point encoded by the two surrogate code points. But occasionally you might be interested in dealing with surrogate characters on their own. Maybe we're missing a combineWith() method that returns the value of CodePoints.toCodePoint(high, low) when called like high.combineWith(low).
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The Unicode standard contains this:
Not all assigned code points represent abstract characters; only Graphic, Format, Control and Private-use do. Surrogates and Noncharacters are assigned code points but are not assigned to abstract characters.
Uses the basic functionality in `kotlin-codepoints` to provide a nicer API to work with Unicode code points.
This PR adds
kotlin-codepoints-deluxe(I'm open to suggestions for a better name), a separate library built on top ofkotlin-codepoints.