108 lines
12 KiB
Markdown
108 lines
12 KiB
Markdown
[gram.temp]
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# Annex A (informative) Grammar summary [[gram]](./#gram)
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## A.11 Templates [gram.temp]
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[template-declaration:](temp.pre#nt:template-declaration "13.1 Preamble [temp.pre]")
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[*template-head*](temp.pre#nt:template-head "13.1 Preamble [temp.pre]") [*declaration*](dcl.pre#nt:declaration "9.1 Preamble [dcl.pre]")
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[*template-head*](temp.pre#nt:template-head "13.1 Preamble [temp.pre]") [*concept-definition*](temp.concept#nt:concept-definition "13.7.9 Concept definitions [temp.concept]")
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[template-head:](temp.pre#nt:template-head "13.1 Preamble [temp.pre]")
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template < [*template-parameter-list*](temp.pre#nt:template-parameter-list "13.1 Preamble [temp.pre]") > [*requires-clause*](temp.pre#nt:requires-clause "13.1 Preamble [temp.pre]")opt
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[template-parameter-list:](temp.pre#nt:template-parameter-list "13.1 Preamble [temp.pre]")
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[*template-parameter*](temp.param#nt:template-parameter "13.2 Template parameters [temp.param]")
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[*template-parameter-list*](temp.pre#nt:template-parameter-list "13.1 Preamble [temp.pre]") , [*template-parameter*](temp.param#nt:template-parameter "13.2 Template parameters [temp.param]")
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[requires-clause:](temp.pre#nt:requires-clause "13.1 Preamble [temp.pre]")
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requires [*constraint-logical-or-expression*](temp.pre#nt:constraint-logical-or-expression "13.1 Preamble [temp.pre]")
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[constraint-logical-or-expression:](temp.pre#nt:constraint-logical-or-expression "13.1 Preamble [temp.pre]")
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[*constraint-logical-and-expression*](temp.pre#nt:constraint-logical-and-expression "13.1 Preamble [temp.pre]")
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[*constraint-logical-or-expression*](temp.pre#nt:constraint-logical-or-expression "13.1 Preamble [temp.pre]") || [*constraint-logical-and-expression*](temp.pre#nt:constraint-logical-and-expression "13.1 Preamble [temp.pre]")
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[constraint-logical-and-expression:](temp.pre#nt:constraint-logical-and-expression "13.1 Preamble [temp.pre]")
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[*primary-expression*](expr.prim.grammar#nt:primary-expression "7.5.1 Grammar [expr.prim.grammar]")
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[*constraint-logical-and-expression*](temp.pre#nt:constraint-logical-and-expression "13.1 Preamble [temp.pre]") && [*primary-expression*](expr.prim.grammar#nt:primary-expression "7.5.1 Grammar [expr.prim.grammar]")
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[template-parameter:](temp.param#nt:template-parameter "13.2 Template parameters [temp.param]")
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[*type-parameter*](temp.param#nt:type-parameter "13.2 Template parameters [temp.param]")
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[*parameter-declaration*](dcl.fct#nt:parameter-declaration "9.3.4.6 Functions [dcl.fct]")
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[*type-tt-parameter*](temp.param#nt:type-tt-parameter "13.2 Template parameters [temp.param]")
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[*variable-tt-parameter*](temp.param#nt:variable-tt-parameter "13.2 Template parameters [temp.param]")
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[*concept-tt-parameter*](temp.param#nt:concept-tt-parameter "13.2 Template parameters [temp.param]")
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[type-parameter:](temp.param#nt:type-parameter "13.2 Template parameters [temp.param]")
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[*type-parameter-key*](temp.param#nt:type-parameter-key "13.2 Template parameters [temp.param]") ...opt [*identifier*](lex.name#nt:identifier "5.11 Identifiers [lex.name]")opt
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[*type-parameter-key*](temp.param#nt:type-parameter-key "13.2 Template parameters [temp.param]") [*identifier*](lex.name#nt:identifier "5.11 Identifiers [lex.name]")opt = [*type-id*](dcl.name#nt:type-id "9.3.2 Type names [dcl.name]")
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[*type-constraint*](temp.param#nt:type-constraint "13.2 Template parameters [temp.param]") ...opt [*identifier*](lex.name#nt:identifier "5.11 Identifiers [lex.name]")opt
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[*type-constraint*](temp.param#nt:type-constraint "13.2 Template parameters [temp.param]") [*identifier*](lex.name#nt:identifier "5.11 Identifiers [lex.name]")opt = [*type-id*](dcl.name#nt:type-id "9.3.2 Type names [dcl.name]")
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[type-parameter-key:](temp.param#nt:type-parameter-key "13.2 Template parameters [temp.param]")
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class
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typename
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[type-constraint:](temp.param#nt:type-constraint "13.2 Template parameters [temp.param]")
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[*nested-name-specifier*](expr.prim.id.qual#nt:nested-name-specifier "7.5.5.3 Qualified names [expr.prim.id.qual]")opt [*concept-name*](temp.concept#nt:concept-name "13.7.9 Concept definitions [temp.concept]")
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[*nested-name-specifier*](expr.prim.id.qual#nt:nested-name-specifier "7.5.5.3 Qualified names [expr.prim.id.qual]")opt [*concept-name*](temp.concept#nt:concept-name "13.7.9 Concept definitions [temp.concept]") < [*template-argument-list*](temp.names#nt:template-argument-list "13.3 Names of template specializations [temp.names]")opt >
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[type-tt-parameter:](temp.param#nt:type-tt-parameter "13.2 Template parameters [temp.param]")
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[*template-head*](temp.pre#nt:template-head "13.1 Preamble [temp.pre]") [*type-parameter-key*](temp.param#nt:type-parameter-key "13.2 Template parameters [temp.param]") ...opt [*identifier*](lex.name#nt:identifier "5.11 Identifiers [lex.name]")opt
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[*template-head*](temp.pre#nt:template-head "13.1 Preamble [temp.pre]") [*type-parameter-key*](temp.param#nt:type-parameter-key "13.2 Template parameters [temp.param]") [*identifier*](lex.name#nt:identifier "5.11 Identifiers [lex.name]")opt [*type-tt-parameter-default*](temp.param#nt:type-tt-parameter-default "13.2 Template parameters [temp.param]")
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[type-tt-parameter-default:](temp.param#nt:type-tt-parameter-default "13.2 Template parameters [temp.param]")
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= [*nested-name-specifier*](expr.prim.id.qual#nt:nested-name-specifier "7.5.5.3 Qualified names [expr.prim.id.qual]")opt [*template-name*](temp.names#nt:template-name "13.3 Names of template specializations [temp.names]")
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= [*nested-name-specifier*](expr.prim.id.qual#nt:nested-name-specifier "7.5.5.3 Qualified names [expr.prim.id.qual]") template [*template-name*](temp.names#nt:template-name "13.3 Names of template specializations [temp.names]")
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[variable-tt-parameter:](temp.param#nt:variable-tt-parameter "13.2 Template parameters [temp.param]")
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[*template-head*](temp.pre#nt:template-head "13.1 Preamble [temp.pre]") auto ...opt [*identifier*](lex.name#nt:identifier "5.11 Identifiers [lex.name]")opt
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[*template-head*](temp.pre#nt:template-head "13.1 Preamble [temp.pre]") auto [*identifier*](lex.name#nt:identifier "5.11 Identifiers [lex.name]")opt = [*nested-name-specifier*](expr.prim.id.qual#nt:nested-name-specifier "7.5.5.3 Qualified names [expr.prim.id.qual]")opt [*template-name*](temp.names#nt:template-name "13.3 Names of template specializations [temp.names]")
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[concept-tt-parameter:](temp.param#nt:concept-tt-parameter "13.2 Template parameters [temp.param]")
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template < [*template-parameter-list*](temp.pre#nt:template-parameter-list "13.1 Preamble [temp.pre]") > concept ...opt [*identifier*](lex.name#nt:identifier "5.11 Identifiers [lex.name]")opt
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template < [*template-parameter-list*](temp.pre#nt:template-parameter-list "13.1 Preamble [temp.pre]") > concept [*identifier*](lex.name#nt:identifier "5.11 Identifiers [lex.name]")opt = [*nested-name-specifier*](expr.prim.id.qual#nt:nested-name-specifier "7.5.5.3 Qualified names [expr.prim.id.qual]")opt [*template-name*](temp.names#nt:template-name "13.3 Names of template specializations [temp.names]")
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[simple-template-id:](temp.names#nt:simple-template-id "13.3 Names of template specializations [temp.names]")
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[*template-name*](temp.names#nt:template-name "13.3 Names of template specializations [temp.names]") < [*template-argument-list*](temp.names#nt:template-argument-list "13.3 Names of template specializations [temp.names]")opt >
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[template-id:](temp.names#nt:template-id "13.3 Names of template specializations [temp.names]")
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[*simple-template-id*](temp.names#nt:simple-template-id "13.3 Names of template specializations [temp.names]")
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[*operator-function-id*](over.oper.general#nt:operator-function-id "12.4.1 General [over.oper.general]") < [*template-argument-list*](temp.names#nt:template-argument-list "13.3 Names of template specializations [temp.names]")opt >
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[*literal-operator-id*](over.literal#nt:literal-operator-id "12.6 User-defined literals [over.literal]") < [*template-argument-list*](temp.names#nt:template-argument-list "13.3 Names of template specializations [temp.names]")opt >
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[template-name:](temp.names#nt:template-name "13.3 Names of template specializations [temp.names]")
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[*identifier*](lex.name#nt:identifier "5.11 Identifiers [lex.name]")
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[template-argument-list:](temp.names#nt:template-argument-list "13.3 Names of template specializations [temp.names]")
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[*template-argument*](temp.names#nt:template-argument "13.3 Names of template specializations [temp.names]") ...opt
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[*template-argument-list*](temp.names#nt:template-argument-list "13.3 Names of template specializations [temp.names]") , [*template-argument*](temp.names#nt:template-argument "13.3 Names of template specializations [temp.names]") ...opt
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[template-argument:](temp.names#nt:template-argument "13.3 Names of template specializations [temp.names]")
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[*constant-expression*](expr.const#nt:constant-expression "7.7 Constant expressions [expr.const]")
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[*type-id*](dcl.name#nt:type-id "9.3.2 Type names [dcl.name]")
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[*nested-name-specifier*](expr.prim.id.qual#nt:nested-name-specifier "7.5.5.3 Qualified names [expr.prim.id.qual]")opt [*template-name*](temp.names#nt:template-name "13.3 Names of template specializations [temp.names]")
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[*nested-name-specifier*](expr.prim.id.qual#nt:nested-name-specifier "7.5.5.3 Qualified names [expr.prim.id.qual]") template [*template-name*](temp.names#nt:template-name "13.3 Names of template specializations [temp.names]")
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[constraint-expression:](temp.constr.decl#nt:constraint-expression "13.5.3 Constrained declarations [temp.constr.decl]")
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[*logical-or-expression*](expr.log.or#nt:logical-or-expression "7.6.15 Logical OR operator [expr.log.or]")
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[deduction-guide:](temp.deduct.guide#nt:deduction-guide "13.7.2.3 Deduction guides [temp.deduct.guide]")
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[*explicit-specifier*](dcl.fct.spec#nt:explicit-specifier "9.2.3 Function specifiers [dcl.fct.spec]")opt [*template-name*](temp.names#nt:template-name "13.3 Names of template specializations [temp.names]") ( [*parameter-declaration-clause*](dcl.fct#nt:parameter-declaration-clause "9.3.4.6 Functions [dcl.fct]") ) -> [*simple-template-id*](temp.names#nt:simple-template-id "13.3 Names of template specializations [temp.names]") [*requires-clause*](temp.pre#nt:requires-clause "13.1 Preamble [temp.pre]")opt ;
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[concept-definition:](temp.concept#nt:concept-definition "13.7.9 Concept definitions [temp.concept]")
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concept [*concept-name*](temp.concept#nt:concept-name "13.7.9 Concept definitions [temp.concept]") [*attribute-specifier-seq*](dcl.attr.grammar#nt:attribute-specifier-seq "9.13.1 Attribute syntax and semantics [dcl.attr.grammar]")opt = [*constraint-expression*](temp.constr.decl#nt:constraint-expression "13.5.3 Constrained declarations [temp.constr.decl]") ;
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[concept-name:](temp.concept#nt:concept-name "13.7.9 Concept definitions [temp.concept]")
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[*identifier*](lex.name#nt:identifier "5.11 Identifiers [lex.name]")
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[typename-specifier:](temp.res.general#nt:typename-specifier "13.8.1 General [temp.res.general]")
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typename [*nested-name-specifier*](expr.prim.id.qual#nt:nested-name-specifier "7.5.5.3 Qualified names [expr.prim.id.qual]") [*identifier*](lex.name#nt:identifier "5.11 Identifiers [lex.name]")
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typename [*nested-name-specifier*](expr.prim.id.qual#nt:nested-name-specifier "7.5.5.3 Qualified names [expr.prim.id.qual]") templateopt [*simple-template-id*](temp.names#nt:simple-template-id "13.3 Names of template specializations [temp.names]")
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[explicit-instantiation:](temp.explicit#nt:explicit-instantiation "13.9.3 Explicit instantiation [temp.explicit]")
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externopt template [*declaration*](dcl.pre#nt:declaration "9.1 Preamble [dcl.pre]")
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[explicit-specialization:](temp.expl.spec#nt:explicit-specialization "13.9.4 Explicit specialization [temp.expl.spec]")
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template < > [*declaration*](dcl.pre#nt:declaration "9.1 Preamble [dcl.pre]")
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