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<!-- Weave of 'Context Symbols' generated by Inweb -->
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< ul class = "crumbs" > < li > < a href = "../index.html" > Home< / a > < / li > < li > < a href = "../other.html" > Other Tools< / a > < / li > < li > < a href = "index.html" > indoc< / a > < / li > < li > < a href = "index.html#1" > Chapter 1: Setting Up< / a > < / li > < li > < b > Context Symbols< / b > < / li > < / ul > < / div >
< p class = "purpose" > Provides conditional rendering of text, depending on context.< / p >
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< ul class = "toc" > < li > < a href = "1-cs.html#SP1" > § 1. About symbols< / a > < / li > < li > < a href = "1-cs.html#SP2" > § 2. Starting up< / a > < / li > < li > < a href = "1-cs.html#SP3" > § 3. Making and unmaking< / a > < / li > < li > < a href = "1-cs.html#SP4" > § 4. Testing< / a > < / li > < / ul > < hr class = "tocbar" >
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< p class = "commentary firstcommentary" > < a id = "SP1" class = "paragraph-anchor" > < / a > < b > § 1. About symbols. < / b > Documentation is allowed to contain rawtext which varies depending on the
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context: on what platform it's being written for, or what format it is
being rendered to, for example. The context is defined by which symbol
names have been defined.
< / p >
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< p class = "commentary" > Symbols are C-like identifiers (alphanumeric or underscored). The symbol has
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been declared if and only if it is an existing key for the following hash,
and the associated value is "y".
< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
< span class = "reserved-syntax" > dictionary< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > defined_symbols< / span > < span class = "plain-syntax" > = < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ;< / span >
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< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP2" class = "paragraph-anchor" > < / a > < b > § 2. Starting up. < / b > The symbol < span class = "extract" > < span class = "extract-syntax" > indoc< / span > < / span > is always defined, so that, in theory, other programs
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working on rawtext can distinguish themselves from us (by not defining it).
For example,
< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
< span class = "plain-syntax" > {^indoc:}You'll probably never see this paragraph.< / span >
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< / pre >
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< p class = "commentary" > provides rawtext visible only if < span class = "extract" > < span class = "extract-syntax" > indoc< / span > < / span > isn't the renderer.
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
< span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > Symbols::start_up_symbols< / span > < button class = "popup" onclick = "togglePopup('usagePopup1')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup1" > Usage of < span class = "code-font" > < span class = "function-syntax" > Symbols::start_up_symbols< / span > < / span > :< br / > Main - < a href = "1-mn.html#SP1_1" > § 1.1< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < a href = "1-cs.html#SP3" class = "function-link" > < span class = "function-syntax" > Symbols::declare_symbol< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > I< / span > < span class = "string-syntax" > "indoc"< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP3" class = "paragraph-anchor" > < / a > < b > § 3. Making and unmaking. < / b > < / p >
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< pre class = "displayed-code all-displayed-code code-font" >
< span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > Symbols::declare_symbol< / span > < button class = "popup" onclick = "togglePopup('usagePopup2')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup2" > Usage of < span class = "code-font" > < span class = "function-syntax" > Symbols::declare_symbol< / span > < / span > :< br / > < a href = "1-cs.html#SP2" > § 2< / a > < br / > Instructions - < a href = "1-ins.html#SP5" > § 5< / a > , < a href = "1-ins.html#SP3_2" > § 3.2< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > text_stream< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > symbol< / 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" > defined_symbols< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > NULL< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > defined_symbols< / span > < span class = "plain-syntax" > = < / span > < a href = "../../../inweb/docs/foundation-module/2-dct.html#SP2" class = "function-link" > < span class = "function-syntax" > Dictionaries::new< / span > < / a > < span class = "plain-syntax" > (10, < / span > < span class = "constant-syntax" > TRUE< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > text_stream< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > entry< / span > < span class = "plain-syntax" > = < / span > < a href = "../../../inweb/docs/foundation-module/2-dct.html#SP9" class = "function-link" > < span class = "function-syntax" > Dictionaries::create_text< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > defined_symbols< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > symbol< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < a href = "../../../inweb/docs/foundation-module/4-sm.html#SP17" class = "function-link" > < span class = "function-syntax" > Str::copy< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > entry< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > I< / span > < span class = "string-syntax" > "y"< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > LOGIF< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > SYMBOLS< / span > < span class = "plain-syntax" > , < / span > < span class = "string-syntax" > "Declaring < %S> \n"< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > symbol< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > }< / span >
< span class = "reserved-syntax" > void< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > Symbols::undeclare_symbol< / span > < button class = "popup" onclick = "togglePopup('usagePopup3')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup3" > Usage of < span class = "code-font" > < span class = "function-syntax" > Symbols::undeclare_symbol< / span > < / span > :< br / > Instructions - < a href = "1-ins.html#SP5" > § 5< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > text_stream< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > symbol< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > text_stream< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > entry< / span > < span class = "plain-syntax" > = < / span > < a href = "../../../inweb/docs/foundation-module/2-dct.html#SP10" class = "function-link" > < span class = "function-syntax" > Dictionaries::get_text< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > defined_symbols< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > symbol< / 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" > entry< / 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 = "plain-syntax" > < / span > < a href = "../../../inweb/docs/foundation-module/4-sm.html#SP17" class = "function-link" > < span class = "function-syntax" > Str::copy< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > entry< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > I< / span > < span class = "string-syntax" > "n"< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > LOGIF< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > SYMBOLS< / span > < span class = "plain-syntax" > , < / span > < span class = "string-syntax" > "Undeclaring < %S> \n"< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > symbol< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP4" class = "paragraph-anchor" > < / a > < b > § 4. Testing. < / b > This returns 1 if the current context matches the condition given, and 0
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otherwise.
< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
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< span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > Symbols::perform_ifdef< / span > < button class = "popup" onclick = "togglePopup('usagePopup4')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup4" > Usage of < span class = "code-font" > < span class = "function-syntax" > Symbols::perform_ifdef< / span > < / span > :< br / > < a href = "1-cs.html#SP5_1" > § 5.1< / a > , < a href = "1-cs.html#SP5_2" > § 5.2< / a > , < a href = "1-cs.html#SP5_3" > § 5.3< / a > , < a href = "1-cs.html#SP5_4" > § 5.4< / a > < br / > Structural Scan - < a href = "2-ss.html#SP5_1" > § 5.1< / a > < br / > Rawtext Reader - < a href = "2-rr.html#SP4_1" > § 4.1< / a > , < a href = "2-rr.html#SP4_6_1" > § 4.6.1< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > text_stream< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > for< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > i< / span > < span class = "plain-syntax" > =0, < / span > < span class = "identifier-syntax" > L< / span > < span class = "plain-syntax" > =< / span > < a href = "../../../inweb/docs/foundation-module/4-sm.html#SP8" class = "function-link" > < span class = "function-syntax" > Str::len< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > ); < / span > < span class = "identifier-syntax" > i< / span > < span class = "plain-syntax" > < < / span > < span class = "identifier-syntax" > L< / span > < span class = "plain-syntax" > ; < / span > < span class = "identifier-syntax" > i< / 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 = "../../../inweb/docs/foundation-module/4-sm.html#SP13" class = "function-link" > < span class = "function-syntax" > Str::get_at< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > i< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "../../../inweb/docs/foundation-module/4-chr.html#SP2" class = "function-link" > < span class = "function-syntax" > Characters::is_whitespace< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > c< / span > < span class = "plain-syntax" > )) {< / span >
< span class = "plain-syntax" > < / span > < a href = "../../../inweb/docs/foundation-module/4-sm.html#SP25" class = "function-link" > < span class = "function-syntax" > Str::delete_nth_character< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > i< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > i< / span > < span class = "plain-syntax" > --; < / span > < span class = "identifier-syntax" > L< / 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" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > v< / span > < span class = "plain-syntax" > = < / span > < a href = "1-cs.html#SP5" class = "function-link" > < span class = "function-syntax" > Symbols::perform_ifdef_inner< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > LOGIF< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > SYMBOLS< / span > < span class = "plain-syntax" > , < / span > < span class = "string-syntax" > "Ifdef < %S> --> %s\n"< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > v< / span > < span class = "plain-syntax" > ?< / span > < span class = "string-syntax" > "yes"< / span > < span class = "plain-syntax" > :< / span > < span class = "string-syntax" > "no"< / 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" > v< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP5" class = "paragraph-anchor" > < / a > < b > § 5. < / b > There is an expression grammar here, which we apply correctly if the
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condition is well-formed; if it"s a mess, we try to return 0, but don"t go
to any trouble to report errors.
< / p >
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< p class = "commentary" > Any condition can be bracketed; otherwise we have the unary operator < span class = "extract" > < span class = "extract-syntax" > ^< / span > < / span >
(negation), the binary < span class = "extract" > < span class = "extract-syntax" > +< / span > < / span > (conjunction), and binary < span class = "extract" > < span class = "extract-syntax" > ,< / span > < / span > (disjunction),
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which associate in that order. An atomic condition is true if and only if
it is a declared symbol. So for example
< / p >
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< p class = "commentary" > ^alpha,beta+gamma
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< / p >
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< p class = "commentary" > is true if either alpha is undeclared, or if both beta and gamma are declared.
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Whereas
< / p >
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< p class = "commentary" > ^(alpha,beta)+gamma
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^alpha+^beta+gamma
< / p >
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< p class = "commentary" > are both true if alpha and beta are undeclared but gamma is declared.
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
< span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > Symbols::perform_ifdef_inner< / span > < button class = "popup" onclick = "togglePopup('usagePopup5')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup5" > Usage of < span class = "code-font" > < span class = "function-syntax" > Symbols::perform_ifdef_inner< / span > < / span > :< br / > < a href = "1-cs.html#SP4" > § 4< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > text_stream< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > ) {< / span >
< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "1-cs.html#SP5_1" class = "named-paragraph-link" > < span class = "named-paragraph" > Subexpressions can be bracketed< / span > < span class = "named-paragraph-number" > 5.1< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "1-cs.html#SP5_2" class = "named-paragraph-link" > < span class = "named-paragraph" > The comma operator is left-associative and means or< / span > < span class = "named-paragraph-number" > 5.2< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "1-cs.html#SP5_3" class = "named-paragraph-link" > < span class = "named-paragraph" > The plus operator is left-associative and means and< / span > < span class = "named-paragraph-number" > 5.3< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "1-cs.html#SP5_4" class = "named-paragraph-link" > < span class = "named-paragraph" > The caret operator is unary and means not< / span > < span class = "named-paragraph-number" > 5.4< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "1-cs.html#SP5_5" class = "named-paragraph-link" > < span class = "named-paragraph" > A bare symbol name is true if and only if it is declared< / span > < span class = "named-paragraph-number" > 5.5< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
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< span class = "plain-syntax" > < / span > < span class = "named-paragraph-container code-font" > < a href = "1-cs.html#SP5_6" class = "named-paragraph-link" > < span class = "named-paragraph" > The expression is malformed< / span > < span class = "named-paragraph-number" > 5.6< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
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< p class = "commentary firstcommentary" > < a id = "SP5_1" class = "paragraph-anchor" > < / a > < b > § 5.1. < / b > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > Subexpressions can be bracketed< / span > < span class = "named-paragraph-number" > 5.1< / span > < / span > < span class = "comment-syntax" > =< / span >
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > match_results< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > mr< / span > < span class = "plain-syntax" > = < / span > < a href = "../../../inweb/docs/foundation-module/4-pm.html#SP9" class = "function-link" > < span class = "function-syntax" > Regexp::create_mr< / span > < / a > < span class = "plain-syntax" > ();< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "../../../inweb/docs/foundation-module/4-pm.html#SP10" class = "function-link" > < span class = "function-syntax" > Regexp::match< / span > < / a > < span class = "plain-syntax" > (& < / span > < span class = "identifier-syntax" > mr< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > L< / span > < span class = "string-syntax" > "%((%c*)%)"< / 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" > rv< / span > < span class = "plain-syntax" > = < / span > < a href = "1-cs.html#SP4" class = "function-link" > < span class = "function-syntax" > Symbols::perform_ifdef< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > mr< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > exp< / span > < span class = "plain-syntax" > [0]);< / span >
< span class = "plain-syntax" > < / span > < a href = "../../../inweb/docs/foundation-module/4-pm.html#SP9" class = "function-link" > < span class = "function-syntax" > Regexp::dispose_of< / span > < / a > < span class = "plain-syntax" > (& < / span > < span class = "identifier-syntax" > mr< / 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" > rv< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
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< ul class = "endnotetexts" > < li > This code is used in < a href = "1-cs.html#SP5" > § 5< / a > .< / li > < / ul >
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< p class = "commentary firstcommentary" > < a id = "SP5_2" class = "paragraph-anchor" > < / a > < b > § 5.2. < / b > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > The comma operator is left-associative and means or< / span > < span class = "named-paragraph-number" > 5.2< / span > < / span > < span class = "comment-syntax" > =< / span >
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > k< / span > < span class = "plain-syntax" > = < / span > < a href = "1-cs.html#SP6" class = "function-link" > < span class = "function-syntax" > Symbols::find_operator< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > , < / span > < span class = "character-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" > k< / span > < span class = "plain-syntax" > > = < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > TEMPORARY_TEXT< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > L< / span > < span class = "plain-syntax" > )< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > TEMPORARY_TEXT< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > )< / span >
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< span class = "plain-syntax" > < / span > < a href = "../../../inweb/docs/foundation-module/4-sm.html#SP17" class = "function-link" > < span class = "function-syntax" > Str::copy< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > L< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < a href = "../../../inweb/docs/foundation-module/4-sm.html#SP15" class = "function-link" > < span class = "function-syntax" > Str::truncate< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > L< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > k< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < a href = "../../../inweb/docs/foundation-module/4-sm.html#SP17" class = "function-link" > < span class = "function-syntax" > Str::copy_tail< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > k< / span > < span class = "plain-syntax" > +1);< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > rv< / span > < span class = "plain-syntax" > = ((< / span > < a href = "1-cs.html#SP4" class = "function-link" > < span class = "function-syntax" > Symbols::perform_ifdef< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > L< / span > < span class = "plain-syntax" > )) || (< / span > < a href = "1-cs.html#SP4" class = "function-link" > < span class = "function-syntax" > Symbols::perform_ifdef< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > )));< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > DISCARD_TEXT< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > L< / span > < span class = "plain-syntax" > )< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > DISCARD_TEXT< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > )< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > rv< / 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" > k< / span > < span class = "plain-syntax" > == -2) < / span > < span class = "named-paragraph-container code-font" > < a href = "1-cs.html#SP5_6" class = "named-paragraph-link" > < span class = "named-paragraph" > The expression is malformed< / span > < span class = "named-paragraph-number" > 5.6< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
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< / pre >
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< ul class = "endnotetexts" > < li > This code is used in < a href = "1-cs.html#SP5" > § 5< / a > .< / li > < / ul >
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< p class = "commentary firstcommentary" > < a id = "SP5_3" class = "paragraph-anchor" > < / a > < b > § 5.3. < / b > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > The plus operator is left-associative and means and< / span > < span class = "named-paragraph-number" > 5.3< / span > < / span > < span class = "comment-syntax" > =< / span >
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > k< / span > < span class = "plain-syntax" > = < / span > < a href = "1-cs.html#SP6" class = "function-link" > < span class = "function-syntax" > Symbols::find_operator< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > , < / span > < span class = "character-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" > k< / span > < span class = "plain-syntax" > > = < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ) {< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > TEMPORARY_TEXT< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > L< / span > < span class = "plain-syntax" > )< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > TEMPORARY_TEXT< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > )< / span >
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< span class = "plain-syntax" > < / span > < a href = "../../../inweb/docs/foundation-module/4-sm.html#SP17" class = "function-link" > < span class = "function-syntax" > Str::copy< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > L< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < a href = "../../../inweb/docs/foundation-module/4-sm.html#SP15" class = "function-link" > < span class = "function-syntax" > Str::truncate< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > L< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > k< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < a href = "../../../inweb/docs/foundation-module/4-sm.html#SP17" class = "function-link" > < span class = "function-syntax" > Str::copy_tail< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > k< / span > < span class = "plain-syntax" > +1);< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > rv< / span > < span class = "plain-syntax" > = ((< / span > < a href = "1-cs.html#SP4" class = "function-link" > < span class = "function-syntax" > Symbols::perform_ifdef< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > L< / span > < span class = "plain-syntax" > )) & & (< / span > < a href = "1-cs.html#SP4" class = "function-link" > < span class = "function-syntax" > Symbols::perform_ifdef< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > )));< / span >
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< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > DISCARD_TEXT< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > L< / span > < span class = "plain-syntax" > )< / span >
< span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > DISCARD_TEXT< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > R< / span > < span class = "plain-syntax" > )< / span >
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< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > rv< / 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" > k< / span > < span class = "plain-syntax" > == -2) < / span > < span class = "named-paragraph-container code-font" > < a href = "1-cs.html#SP5_6" class = "named-paragraph-link" > < span class = "named-paragraph" > The expression is malformed< / span > < span class = "named-paragraph-number" > 5.6< / span > < / a > < / span > < span class = "plain-syntax" > ;< / span >
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< / pre >
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< ul class = "endnotetexts" > < li > This code is used in < a href = "1-cs.html#SP5" > § 5< / a > .< / li > < / ul >
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< p class = "commentary firstcommentary" > < a id = "SP5_4" class = "paragraph-anchor" > < / a > < b > § 5.4. < / b > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > The caret operator is unary and means not< / span > < span class = "named-paragraph-number" > 5.4< / span > < / span > < span class = "comment-syntax" > =< / span >
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > match_results< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > mr< / span > < span class = "plain-syntax" > = < / span > < a href = "../../../inweb/docs/foundation-module/4-pm.html#SP9" class = "function-link" > < span class = "function-syntax" > Regexp::create_mr< / span > < / a > < span class = "plain-syntax" > ();< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "../../../inweb/docs/foundation-module/4-pm.html#SP10" class = "function-link" > < span class = "function-syntax" > Regexp::match< / span > < / a > < span class = "plain-syntax" > (& < / span > < span class = "identifier-syntax" > mr< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > L< / span > < span class = "string-syntax" > "%^(%c*)"< / 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" > rv< / span > < span class = "plain-syntax" > = < / span > < a href = "1-cs.html#SP4" class = "function-link" > < span class = "function-syntax" > Symbols::perform_ifdef< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > mr< / span > < span class = "plain-syntax" > .< / span > < span class = "element-syntax" > exp< / span > < span class = "plain-syntax" > [0]);< / span >
< span class = "plain-syntax" > < / span > < a href = "../../../inweb/docs/foundation-module/4-pm.html#SP9" class = "function-link" > < span class = "function-syntax" > Regexp::dispose_of< / span > < / a > < span class = "plain-syntax" > (& < / span > < span class = "identifier-syntax" > mr< / 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" > rv< / span > < span class = "plain-syntax" > ?< / span > < span class = "identifier-syntax" > FALSE:TRUE< / span > < span class = "plain-syntax" > ;< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
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< ul class = "endnotetexts" > < li > This code is used in < a href = "1-cs.html#SP5" > § 5< / a > .< / li > < / ul >
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< p class = "commentary firstcommentary" > < a id = "SP5_5" class = "paragraph-anchor" > < / a > < b > § 5.5. < / b > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > A bare symbol name is true if and only if it is declared< / span > < span class = "named-paragraph-number" > 5.5< / span > < / span > < span class = "comment-syntax" > =< / span >
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > match_results< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > mr< / span > < span class = "plain-syntax" > = < / span > < a href = "../../../inweb/docs/foundation-module/4-pm.html#SP9" class = "function-link" > < span class = "function-syntax" > Regexp::create_mr< / span > < / a > < span class = "plain-syntax" > ();< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "../../../inweb/docs/foundation-module/4-pm.html#SP10" class = "function-link" > < span class = "function-syntax" > Regexp::match< / span > < / a > < span class = "plain-syntax" > (& < / span > < span class = "identifier-syntax" > mr< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > L< / span > < span class = "string-syntax" > "%i+"< / span > < span class = "plain-syntax" > )) {< / span >
< span class = "plain-syntax" > < / span > < a href = "../../../inweb/docs/foundation-module/4-pm.html#SP9" class = "function-link" > < span class = "function-syntax" > Regexp::dispose_of< / span > < / a > < span class = "plain-syntax" > (& < / span > < span class = "identifier-syntax" > mr< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > text_stream< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > entry< / span > < span class = "plain-syntax" > = < / span > < a href = "../../../inweb/docs/foundation-module/2-dct.html#SP10" class = "function-link" > < span class = "function-syntax" > Dictionaries::get_text< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > defined_symbols< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > );< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > (< / span > < a href = "../../../inweb/docs/foundation-module/4-sm.html#SP22" class = "function-link" > < span class = "function-syntax" > Str::eq_wide_string< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > entry< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > L< / span > < span class = "string-syntax" > "y"< / 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 >
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< ul class = "endnotetexts" > < li > This code is used in < a href = "1-cs.html#SP5" > § 5< / a > .< / li > < / ul >
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< p class = "commentary firstcommentary" > < a id = "SP5_6" class = "paragraph-anchor" > < / a > < b > § 5.6. < / b > < span class = "named-paragraph-container code-font" > < span class = "named-paragraph-defn" > The expression is malformed< / span > < span class = "named-paragraph-number" > 5.6< / span > < / span > < span class = "comment-syntax" > =< / span >
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
< span class = "plain-syntax" > < / span > < a href = "../../../inweb/docs/foundation-module/3-em.html#SP7" class = "function-link" > < span class = "function-syntax" > Errors::with_text< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "string-syntax" > "malformed condition: %S"< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > cond< / 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 >
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< / pre >
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< ul class = "endnotetexts" > < li > This code is used in < a href = "1-cs.html#SP5" > § 5< / a > , < a href = "1-cs.html#SP5_2" > § 5.2< / a > , < a href = "1-cs.html#SP5_3" > § 5.3< / a > .< / li > < / ul >
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< p class = "commentary firstcommentary" > < a id = "SP6" class = "paragraph-anchor" > < / a > < b > § 6. < / b > The following looks for a single character < span class = "extract" > < span class = "extract-syntax" > op< / span > < / span > in any unbracketed interior
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parts of the text < span class = "extract" > < span class = "extract-syntax" > cond< / span > < / span > , and looks out for mismatched brackets on the way.
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< / p >
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< pre class = "displayed-code all-displayed-code code-font" >
< span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "function-syntax" > Symbols::find_operator< / span > < button class = "popup" onclick = "togglePopup('usagePopup6')" > < span class = "comment-syntax" > ?< / span > < span class = "popuptext" id = "usagePopup6" > Usage of < span class = "code-font" > < span class = "function-syntax" > Symbols::find_operator< / span > < / span > :< br / > < a href = "1-cs.html#SP5_2" > § 5.2< / a > , < a href = "1-cs.html#SP5_3" > § 5.3< / a > < / span > < / button > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > text_stream< / span > < span class = "plain-syntax" > *< / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > , < / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > op< / 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" > bl< / 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" > for< / span > < span class = "plain-syntax" > (< / span > < span class = "reserved-syntax" > int< / span > < span class = "plain-syntax" > < / span > < span class = "identifier-syntax" > k< / span > < span class = "plain-syntax" > = < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > L< / span > < span class = "plain-syntax" > = < / span > < a href = "../../../inweb/docs/foundation-module/4-sm.html#SP8" class = "function-link" > < span class = "function-syntax" > Str::len< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > ); < / span > < span class = "identifier-syntax" > k< / span > < span class = "plain-syntax" > < < / span > < span class = "identifier-syntax" > L< / span > < span class = "plain-syntax" > ; < / span > < span class = "identifier-syntax" > k< / 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" > ch< / span > < span class = "plain-syntax" > = < / span > < a href = "../../../inweb/docs/foundation-module/4-sm.html#SP13" class = "function-link" > < span class = "function-syntax" > Str::get_at< / span > < / a > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > cond< / span > < span class = "plain-syntax" > , < / span > < span class = "identifier-syntax" > k< / 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" > ch< / span > < span class = "plain-syntax" > == < / span > < span class = "character-syntax" > '('< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > bl< / 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" > ch< / span > < span class = "plain-syntax" > == < / span > < span class = "character-syntax" > ')'< / span > < span class = "plain-syntax" > ) < / span > < span class = "identifier-syntax" > bl< / 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" > bl< / 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" > -2; < / span > < span class = "comment-syntax" > Too many close brackets< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > if< / span > < span class = "plain-syntax" > ((< / span > < span class = "identifier-syntax" > bl< / span > < span class = "plain-syntax" > == < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ) & & (< / span > < span class = "identifier-syntax" > k< / span > < span class = "plain-syntax" > > < / span > < span class = "constant-syntax" > 0< / span > < span class = "plain-syntax" > ) & & (< / span > < span class = "identifier-syntax" > k< / span > < span class = "plain-syntax" > < < / span > < span class = "identifier-syntax" > L< / span > < span class = "plain-syntax" > - < / span > < span class = "constant-syntax" > 1< / span > < span class = "plain-syntax" > ) & & (< / span > < span class = "identifier-syntax" > ch< / span > < span class = "plain-syntax" > == < / span > < span class = "identifier-syntax" > op< / 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" > k< / 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" > if< / span > < span class = "plain-syntax" > (< / span > < span class = "identifier-syntax" > bl< / 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" > -2; < / span > < span class = "comment-syntax" > Too many open brackets< / span >
< span class = "plain-syntax" > < / span > < span class = "reserved-syntax" > return< / span > < span class = "plain-syntax" > -1; < / span > < span class = "comment-syntax" > Not found< / span >
< span class = "plain-syntax" > }< / span >
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< / pre >
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< nav role = "progress" > < div class = "progresscontainer" >
< ul class = "progressbar" > < li class = "progressprev" > < a href = "1-ins.html" > ❮ < / a > < / li > < li class = "progresschapter" > < a href = "M-iti.html" > M< / a > < / li > < li class = "progresscurrentchapter" > 1< / li > < li class = "progresssection" > < a href = "1-bsc.html" > bsc< / a > < / li > < li class = "progresssection" > < a href = "1-mn.html" > mn< / a > < / li > < li class = "progresssection" > < a href = "1-cnf.html" > cnf< / a > < / li > < li class = "progresssection" > < a href = "1-ins.html" > ins< / a > < / li > < li class = "progresscurrent" > cs< / li > < li class = "progresschapter" > < a href = "2-ss.html" > 2< / a > < / li > < li class = "progresschapter" > < a href = "3-iu.html" > 3< / a > < / li > < li class = "progresschapter" > < a href = "4-nd.html" > 4< / a > < / li > < li class = "progressnext" > < a href = "2-ss.html" > ❯ < / a > < / li > < / ul > < / div >
< / nav > <!-- End of weave -->
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< / main >
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< / body >
< / html >