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<!-- Weave of 'Version Number Ranges' generated by Inweb -->
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< ul class = "crumbs" > < li > < a href = "../index.html" > Home< / a > < / li > < li > < a href = "index.html" > foundation< / a > < / li > < li > < a href = "index.html#7" > Chapter 7: Semantic Versioning< / a > < / li > < li > < b > Version Number Ranges< / b > < / li > < / ul > < p class = "purpose" > Ranges of acceptable version numbers.< / p >
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< ul class = "toc" > < li > < a href = "7-vnr.html#SP1" > § 1. Ranges< / a > < / li > < / ul > < hr class = "tocbar" >
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< p class = "inwebparagraph" > < a id = "SP1" > < / a > < b > § 1. Ranges. < / b > We often want to check if a semver lies in a given precedence range, which we
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store as an "interval" in the mathematical sense. For example, the range < code class = "display" > < span class = "extract-syntax" > [2,6)< / span > < / code >
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means all versions from 2.0.0 (inclusve) up to, but not equal to, 6.0.0. The
lower end is called "closed" because it includes the end-value 2.0.0, and the
upper end "open" because it does not. An infinite end means that there
os no restriction in that direction; an empty end means that, in fact, the
interval is the empty set, that is, that no version number can ever satisfy it.
< / p >
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< p class = "inwebparagraph" > The < code class = "display" > < span class = "extract-syntax" > end_value< / span > < / code > element is meaningful only for < code class = "display" > < span class = "extract-syntax" > CLOSED_RANGE_END< / span > < / code > and < code class = "display" > < span class = "extract-syntax" > OPEN_RANGE_END< / span > < / code >
ends. If one end is marked < code class = "display" > < span class = "extract-syntax" > EMPTY_RANGE_END< / span > < / code > , so must the other be: it makes
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no sense for an interval to be empty seen from one end but not the other.
< / p >
< pre class = "definitions" >
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< span class = "definition-keyword" > enum< / span > < span class = "constant-syntax" > CLOSED_RANGE_END< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > from< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > 1< / span >
< span class = "definition-keyword" > enum< / span > < span class = "constant-syntax" > OPEN_RANGE_END< / span >
< span class = "definition-keyword" > enum< / span > < span class = "constant-syntax" > INFINITE_RANGE_END< / span >
< span class = "definition-keyword" > enum< / span > < span class = "constant-syntax" > EMPTY_RANGE_END< / span >
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< / pre >
< pre class = "display" >
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< span class = "reserved-syntax" > typedef< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > struct< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > range_end< / span > < span class = "plain-syntax" > {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > end_type< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > struct< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > semantic_version_number< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > end_value< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > } < / span > < span class = "reserved-syntax" > range_end< / span > < span class = "plain-syntax" > ;< / span >
< span class = "reserved-syntax" > typedef< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > struct< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > semver_range< / span > < span class = "plain-syntax" > {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > struct< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > range_end< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > lower< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > struct< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > range_end< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > upper< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "constant-syntax" > MEMORY_MANAGEMENT< / span >
< span class = "plain-syntax" > } < / span > < span class = "reserved-syntax" > semver_range< / span > < span class = "plain-syntax" > ;< / span >
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< / pre >
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< ul class = "endnotetexts" > < li > The structure range_end is private to this section.< / li > < li > The structure semver_range is private to this section.< / li > < / ul > < p class = "inwebparagraph" > < a id = "SP2" > < / a > < b > § 2. < / b > As hinted above, the notation < code class = "display" > < span class = "extract-syntax" > [< / span > < / code > and < code class = "display" > < span class = "extract-syntax" > ]< / span > < / code > is used for closed ends, and < code class = "display" > < span class = "extract-syntax" > (< / span > < / code >
and < code class = "display" > < span class = "extract-syntax" > )< / span > < / code > for open ones.
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< / p >
< pre class = "display" >
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< span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > VersionNumberRanges::write_range< / span > < button class = "popup" onclick = "togglePopup('usagePopup1')" > ...< span class = "popuptext" id = "usagePopup1" > Usage of < b > VersionNumberRanges::write_range< / b > :< br > none< / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "constant-syntax" > OUTPUT_STREAM< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > semver_range< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > internal_error< / span > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "no range"< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > switch< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > case< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > CLOSED_RANGE_END:< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > WRITE< / span > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "[%v,"< / span > < span class = "plain-syntax" > , & (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > )); < / span > < span class = "reserved-syntax" > break< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > case< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > OPEN_RANGE_END:< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > WRITE< / span > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "(%v,"< / span > < span class = "plain-syntax" > , & (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > )); < / span > < span class = "reserved-syntax" > break< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > case< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > INFINITE_RANGE_END:< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > WRITE< / span > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "(-infty,"< / span > < span class = "plain-syntax" > ); < / span > < span class = "reserved-syntax" > break< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > case< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > EMPTY_RANGE_END:< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > WRITE< / span > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "empty"< / span > < span class = "plain-syntax" > ); < / span > < span class = "reserved-syntax" > break< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > switch< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > case< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > CLOSED_RANGE_END:< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > WRITE< / span > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "%v]"< / span > < span class = "plain-syntax" > , & (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > )); < / span > < span class = "reserved-syntax" > break< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > case< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > OPEN_RANGE_END:< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > WRITE< / span > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "%v)"< / span > < span class = "plain-syntax" > , & (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > )); < / span > < span class = "reserved-syntax" > break< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > case< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > INFINITE_RANGE_END:< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > WRITE< / span > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "infty)"< / span > < span class = "plain-syntax" > ); < / span > < span class = "reserved-syntax" > break< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
< p class = "inwebparagraph" > < a id = "SP3" > < / a > < b > § 3. < / b > The "allow anything" range runs from minus to plus infinity. Every version
number lies in this range.
< / p >
< pre class = "display" >
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< span class = "reserved-syntax" > semver_range< / span > < span class = "plain-syntax" > *< / span > < span class = "function-syntax" > VersionNumberRanges::any_range< / span > < button class = "popup" onclick = "togglePopup('usagePopup2')" > ...< span class = "popuptext" id = "usagePopup2" > Usage of < b > VersionNumberRanges::any_range< / b > :< br > < a href = "7-vnr.html#SP4" > § 4< / a > , < a href = "7-vnr.html#SP5" > § 5< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > semver_range< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > CREATE< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > semver_range< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > = < / span > < span class = "constant-syntax" > INFINITE_RANGE_END< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > = < / span > < a href = "7-vn.html#SP4" class = "internal" > VersionNumbers::null< / a > < span class = "plain-syntax" > ();< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > = < / span > < span class = "constant-syntax" > INFINITE_RANGE_END< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > = < / span > < a href = "7-vn.html#SP4" class = "internal" > VersionNumbers::null< / a > < span class = "plain-syntax" > ();< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > VersionNumberRanges::is_any_range< / span > < button class = "popup" onclick = "togglePopup('usagePopup3')" > ...< span class = "popuptext" id = "usagePopup3" > Usage of < b > VersionNumberRanges::is_any_range< / b > :< br > none< / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > semver_range< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > TRUE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > ((< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > INFINITE_RANGE_END< / span > < span class = "plain-syntax" > ) & & (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > INFINITE_RANGE_END< / span > < span class = "plain-syntax" > ))< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > TRUE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
< p class = "inwebparagraph" > < a id = "SP4" > < / a > < b > § 4. < / b > The "compatibility" range for a given version lies at the heart of semver:
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to be compatible with version < code class = "display" > < span class = "extract-syntax" > V< / span > < / code > , version < code class = "display" > < span class = "extract-syntax" > W< / span > < / code > must be of equal or greater
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precedence, and must have the same major version number. For example,
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for < code class = "display" > < span class = "extract-syntax" > 2.1.7< / span > < / code > the range will be < code class = "display" > < span class = "extract-syntax" > [2.1.7, 3-A)< / span > < / code > , all versions at least 2.1.7 but
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not as high as 3.0.0-A.
< / p >
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< p class = "inwebparagraph" > Note that < code class = "display" > < span class = "extract-syntax" > 3.0.0-A< / span > < / code > is the least precendent version allowed by semver with
major version 3. The < code class = "display" > < span class = "extract-syntax" > -< / span > < / code > gives it lower precedence than all release versions of
3.0.0; the fact that upper case < code class = "display" > < span class = "extract-syntax" > A< / span > < / code > is alphabetically the earliest non-empty
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alphanumeric string gives it lower precendence than all other prerelease
versions.
< / p >
< pre class = "display" >
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< span class = "reserved-syntax" > semver_range< / span > < span class = "plain-syntax" > *< / span > < span class = "function-syntax" > VersionNumberRanges::compatibility_range< / span > < button class = "popup" onclick = "togglePopup('usagePopup4')" > ...< span class = "popuptext" id = "usagePopup4" > Usage of < b > VersionNumberRanges::compatibility_range< / b > :< br > none< / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > semantic_version_number< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > semver_range< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > = < / span > < a href = "7-vnr.html#SP3" class = "internal" > VersionNumberRanges::any_range< / a > < span class = "plain-syntax" > ();< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "7-vn.html#SP4" class = "internal" > VersionNumbers::is_null< / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > ) == < / span > < span class = "constant-syntax" > FALSE< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > lower< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > = < / span > < span class = "constant-syntax" > CLOSED_RANGE_END< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > lower< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > upper< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > = < / span > < span class = "constant-syntax" > OPEN_RANGE_END< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > semantic_version_number< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > W< / span > < span class = "plain-syntax" > = < / span > < a href = "7-vn.html#SP4" class = "internal" > VersionNumbers::null< / a > < span class = "plain-syntax" > ();< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > W< / span > < span class = "plain-syntax" > .< / span > < span class = "identifier-syntax" > version_numbers< / span > < span class = "plain-syntax" > [0] = < / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > .< / span > < span class = "identifier-syntax" > version_numbers< / span > < span class = "plain-syntax" > [0] + < / span > < span class = "constant-syntax" > 1< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > W< / span > < span class = "plain-syntax" > .< / span > < span class = "identifier-syntax" > prerelease_segments< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > NEW_LINKED_LIST< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > text_stream< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > ADD_TO_LINKED_LIST< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > I< / span > < span class = "string-syntax" > "A"< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > text_stream< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > W< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > prerelease_segments< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "identifier-syntax" > upper< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > W< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
< p class = "inwebparagraph" > < a id = "SP5" > < / a > < b > § 5. < / b > More straightforwardly, these ranges are for anything from V, or up to V,
inclusive:
< / p >
< pre class = "display" >
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< span class = "reserved-syntax" > semver_range< / span > < span class = "plain-syntax" > *< / span > < span class = "function-syntax" > VersionNumberRanges::at_least_range< / span > < button class = "popup" onclick = "togglePopup('usagePopup5')" > ...< span class = "popuptext" id = "usagePopup5" > Usage of < b > VersionNumberRanges::at_least_range< / b > :< br > none< / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > semantic_version_number< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > semver_range< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > = < / span > < a href = "7-vnr.html#SP3" class = "internal" > VersionNumberRanges::any_range< / a > < span class = "plain-syntax" > ();< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > = < / span > < span class = "constant-syntax" > CLOSED_RANGE_END< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "reserved-syntax" > semver_range< / span > < span class = "plain-syntax" > *< / span > < span class = "function-syntax" > VersionNumberRanges::at_most_range< / span > < button class = "popup" onclick = "togglePopup('usagePopup6')" > ...< span class = "popuptext" id = "usagePopup6" > Usage of < b > VersionNumberRanges::at_most_range< / b > :< br > none< / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > semantic_version_number< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > semver_range< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > = < / span > < a href = "7-vnr.html#SP3" class = "internal" > VersionNumberRanges::any_range< / a > < span class = "plain-syntax" > ();< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > = < / span > < span class = "constant-syntax" > CLOSED_RANGE_END< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
< p class = "inwebparagraph" > < a id = "SP6" > < / a > < b > § 6. < / b > Here we test whether V is at least a given end, and then at most:
< / p >
< pre class = "display" >
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< span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > VersionNumberRanges::version_ge_end< / span > < button class = "popup" onclick = "togglePopup('usagePopup7')" > ...< span class = "popuptext" id = "usagePopup7" > Usage of < b > VersionNumberRanges::version_ge_end< / b > :< br > < a href = "7-vnr.html#SP7" > § 7< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > semantic_version_number< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > range_end< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > E< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > switch< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > E< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > case< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > CLOSED_RANGE_END:< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "7-vn.html#SP4" class = "internal" > VersionNumbers::is_null< / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > )) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "7-vn.html#SP11" class = "internal" > VersionNumbers::ge< / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > E< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > )) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > TRUE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > break< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > case< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > OPEN_RANGE_END:< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "7-vn.html#SP4" class = "internal" > VersionNumbers::is_null< / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > )) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "7-vn.html#SP11" class = "internal" > VersionNumbers::gt< / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > E< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > )) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > TRUE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > break< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > case< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > INFINITE_RANGE_END:< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > TRUE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > case< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > EMPTY_RANGE_END:< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > VersionNumberRanges::version_le_end< / span > < button class = "popup" onclick = "togglePopup('usagePopup8')" > ...< span class = "popuptext" id = "usagePopup8" > Usage of < b > VersionNumberRanges::version_le_end< / b > :< br > < a href = "7-vnr.html#SP7" > § 7< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > semantic_version_number< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > range_end< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > E< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > switch< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > E< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > case< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > CLOSED_RANGE_END:< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "7-vn.html#SP4" class = "internal" > VersionNumbers::is_null< / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > )) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "7-vn.html#SP8" class = "internal" > VersionNumbers::le< / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > E< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > )) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > TRUE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > break< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > case< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > OPEN_RANGE_END:< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "7-vn.html#SP4" class = "internal" > VersionNumbers::is_null< / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > )) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "7-vn.html#SP11" class = "internal" > VersionNumbers::lt< / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > E< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > )) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > TRUE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > break< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > case< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > INFINITE_RANGE_END:< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > TRUE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > case< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > EMPTY_RANGE_END:< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
2020-03-23 15:04:43 +00:00
< / pre >
< p class = "inwebparagraph" > < a id = "SP7" > < / a > < b > § 7. < / b > This allows a simple way to write:
< / p >
< pre class = "display" >
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< span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > VersionNumberRanges::in_range< / span > < button class = "popup" onclick = "togglePopup('usagePopup9')" > ...< span class = "popuptext" id = "usagePopup9" > Usage of < b > VersionNumberRanges::in_range< / b > :< br > none< / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > semantic_version_number< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > semver_range< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > TRUE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > ((< / span > < a href = "7-vnr.html#SP6" class = "internal" > VersionNumberRanges::version_ge_end< / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > )) & & < / span >
< span class = "plain-syntax" > (< / span > < a href = "7-vnr.html#SP6" class = "internal" > VersionNumberRanges::version_le_end< / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > V< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > ))) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > TRUE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
< p class = "inwebparagraph" > < a id = "SP8" > < / a > < b > § 8. < / b > The following decides which end restriction is stricter: it returns 1
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of < code class = "display" > < span class = "extract-syntax" > E1< / span > < / code > is, -1 if < code class = "display" > < span class = "extract-syntax" > E2< / span > < / code > is, and 0 if they are equally onerous.
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< / p >
< p class = "inwebparagraph" > The empty set is as strict as it gets: nothing qualifies.
< / p >
< p class = "inwebparagraph" > Similarly, infinite ends are as relaxed as can be: everything qualifies.
< / p >
< p class = "inwebparagraph" > And otherwise, we need to know which end we're looking at in order to decide:
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a lower end of < code class = "display" > < span class = "extract-syntax" > [4, ...]< / span > < / code > is stricter than a lower end of < code class = "display" > < span class = "extract-syntax" > [3, ...]< / span > < / code > , but an
upper end of < code class = "display" > < span class = "extract-syntax" > [..., 4]< / span > < / code > is not as strict as an upper end of < code class = "display" > < span class = "extract-syntax" > [..., 3]< / span > < / code > . Where
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the boundary value is the same, open ends are stricter than closed ends.
< / p >
< pre class = "display" >
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< span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > VersionNumberRanges::stricter< / span > < button class = "popup" onclick = "togglePopup('usagePopup10')" > ...< span class = "popuptext" id = "usagePopup10" > Usage of < b > VersionNumberRanges::stricter< / b > :< br > < a href = "7-vnr.html#SP9" > § 9< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > range_end< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > E1< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > range_end< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > E2< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > lower< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > ((< / span > < span class = "identifier-syntax" > E1< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > EMPTY_RANGE_END< / span > < span class = "plain-syntax" > ) & & (< / span > < span class = "identifier-syntax" > E2< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > EMPTY_RANGE_END< / span > < span class = "plain-syntax" > )) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > E1< / span > < span class = "plain-syntax" > .< / span > < span class = "identifier-syntax" > end_type< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > EMPTY_RANGE_END< / span > < span class = "plain-syntax" > ) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > 1< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > E2< / span > < span class = "plain-syntax" > .< / span > < span class = "identifier-syntax" > end_type< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > EMPTY_RANGE_END< / span > < span class = "plain-syntax" > ) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > -1;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > ((< / span > < span class = "identifier-syntax" > E1< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > INFINITE_RANGE_END< / span > < span class = "plain-syntax" > ) & & (< / span > < span class = "identifier-syntax" > E2< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > INFINITE_RANGE_END< / span > < span class = "plain-syntax" > )) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > E1< / span > < span class = "plain-syntax" > .< / span > < span class = "identifier-syntax" > end_type< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > INFINITE_RANGE_END< / span > < span class = "plain-syntax" > ) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > -1;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > E2< / span > < span class = "plain-syntax" > .< / span > < span class = "identifier-syntax" > end_type< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > INFINITE_RANGE_END< / span > < span class = "plain-syntax" > ) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > 1< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > c< / span > < span class = "plain-syntax" > = < / span > < a href = "7-vn.html#SP12" class = "internal" > VersionNumbers::cmp< / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > E1< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > E2< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > c< / span > < span class = "plain-syntax" > != < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > lower< / span > < span class = "plain-syntax" > ) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > c< / span > < span class = "plain-syntax" > ; < / span > < span class = "reserved-syntax" > else< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > -< / span > < span class = "identifier-syntax" > c< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > E1< / span > < span class = "plain-syntax" > .< / span > < span class = "identifier-syntax" > end_type< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > E2< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > ) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > E1< / span > < span class = "plain-syntax" > .< / span > < span class = "identifier-syntax" > end_type< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > CLOSED_RANGE_END< / span > < span class = "plain-syntax" > ) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > -1;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > 1< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
< p class = "inwebparagraph" > < a id = "SP9" > < / a > < b > § 9. < / b > And so we finally arrive at the following, which intersects two ranges:
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that is, it changes < code class = "display" > < span class = "extract-syntax" > R1< / span > < / code > to the range of versions which lie inside both the
original < code class = "display" > < span class = "extract-syntax" > R1< / span > < / code > and also < code class = "display" > < span class = "extract-syntax" > R2< / span > < / code > . (This is used by Inbuild when an extension is
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included in two different places in the source text, but with possibly
different version needs.) The return value is true if an actual change took
place, and false otherwise.
< / p >
< pre class = "display" >
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< span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > VersionNumberRanges::intersect_range< / span > < button class = "popup" onclick = "togglePopup('usagePopup11')" > ...< span class = "popuptext" id = "usagePopup11" > Usage of < b > VersionNumberRanges::intersect_range< / b > :< br > none< / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > semver_range< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > R1< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > semver_range< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > R2< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > lc< / span > < span class = "plain-syntax" > = < / span > < a href = "7-vnr.html#SP8" class = "internal" > VersionNumberRanges::stricter< / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > R2< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > , < / span > < span class = "constant-syntax" > TRUE< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > uc< / span > < span class = "plain-syntax" > = < / span > < a href = "7-vnr.html#SP8" class = "internal" > VersionNumberRanges::stricter< / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > R2< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > , < / span > < span class = "constant-syntax" > FALSE< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > ((< / span > < span class = "identifier-syntax" > lc< / span > < span class = "plain-syntax" > > = < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ) & & (< / span > < span class = "identifier-syntax" > uc< / span > < span class = "plain-syntax" > > = < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > )) < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > FALSE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > lc< / span > < span class = "plain-syntax" > < < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > R1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > R2< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > uc< / span > < span class = "plain-syntax" > < < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > R1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > R2< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > EMPTY_RANGE_END< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > R1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > = < / span > < span class = "constant-syntax" > EMPTY_RANGE_END< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > else< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > EMPTY_RANGE_END< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > R1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > = < / span > < span class = "constant-syntax" > EMPTY_RANGE_END< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > else< / span > < span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > ((< / span > < span class = "identifier-syntax" > R1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > != < / span > < span class = "constant-syntax" > INFINITE_RANGE_END< / span > < span class = "plain-syntax" > ) & & (< / span > < span class = "identifier-syntax" > R1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > != < / span > < span class = "constant-syntax" > INFINITE_RANGE_END< / span > < span class = "plain-syntax" > )) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > c< / span > < span class = "plain-syntax" > = < / span > < a href = "7-vn.html#SP12" class = "internal" > VersionNumbers::cmp< / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > R1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_value< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > ((< / span > < span class = "identifier-syntax" > c< / span > < span class = "plain-syntax" > > < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ) ||< / span >
< span class = "plain-syntax" > ((< / span > < span class = "identifier-syntax" > c< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ) & & ((< / span > < span class = "identifier-syntax" > R1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > OPEN_RANGE_END< / span > < span class = "plain-syntax" > ) ||< / span >
< span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > OPEN_RANGE_END< / span > < span class = "plain-syntax" > )))) {< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > R1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > lower< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > = < / span > < span class = "constant-syntax" > EMPTY_RANGE_END< / span > < span class = "plain-syntax" > ; < / span > < span class = "identifier-syntax" > R1< / span > < span class = "plain-syntax" > -> < / span > < span class = "element-syntax" > upper< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > end_type< / span > < span class = "plain-syntax" > = < / span > < span class = "constant-syntax" > EMPTY_RANGE_END< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > }< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "constant-syntax" > TRUE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
2020-03-23 15:04:43 +00:00
< / pre >
< hr class = "tocbar" >
< ul class = "toc" > < li > < a href = "7-vn.html" > Back to 'Version Numbers'< / a > < / li > < li > < i > (This section ends Chapter 7: Semantic Versioning.)< / i > < / li > < / ul > < hr class = "tocbar" >
<!-- End of weave -->
< / main >
< / body >
< / html >
