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Merge pull request #1337 from AleoHQ/abnf
[ABNF] Improve rules for array expressions.
This commit is contained in:
Alessandro Coglio
GitHub
commit
86552cacdd
@ -476,7 +476,7 @@ Line terminators form whitespace, along with spaces and horizontal tabs.
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whitespace = space / horizontal-tab / newline
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```
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Go to: _[newline](#user-content-newline), [space](#user-content-space), [horizontal-tab](#user-content-horizontal-tab)_;
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Go to: _[newline](#user-content-newline), [horizontal-tab](#user-content-horizontal-tab), [space](#user-content-space)_;
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There are two kinds of comments in Leo, as in other languages.
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@ -494,7 +494,7 @@ the ones used in the Java language reference.
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comment = block-comment / end-of-line-comment
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```
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Go to: _[block-comment](#user-content-block-comment), [end-of-line-comment](#user-content-end-of-line-comment)_;
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Go to: _[end-of-line-comment](#user-content-end-of-line-comment), [block-comment](#user-content-block-comment)_;
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<a name="block-comment"></a>
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@ -590,7 +590,7 @@ lowercase-letter = %x61-7A ; a-z
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letter = uppercase-letter / lowercase-letter
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```
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Go to: _[lowercase-letter](#user-content-lowercase-letter), [uppercase-letter](#user-content-uppercase-letter)_;
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Go to: _[uppercase-letter](#user-content-uppercase-letter), [lowercase-letter](#user-content-lowercase-letter)_;
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The following rules defines (ASCII) decimal, octal, and hexadecimal digits.
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@ -774,7 +774,7 @@ character-literal-element = not-single-quote-or-backslash
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/ unicode-character-escape
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```
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Go to: _[ascii-character-escape](#user-content-ascii-character-escape), [simple-character-escape](#user-content-simple-character-escape), [unicode-character-escape](#user-content-unicode-character-escape), [not-single-quote-or-backslash](#user-content-not-single-quote-or-backslash)_;
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Go to: _[simple-character-escape](#user-content-simple-character-escape), [unicode-character-escape](#user-content-unicode-character-escape), [not-single-quote-or-backslash](#user-content-not-single-quote-or-backslash), [ascii-character-escape](#user-content-ascii-character-escape)_;
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<a name="single-quote-escape"></a>
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@ -829,7 +829,7 @@ simple-character-escape = single-quote-escape
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/ null-character-escape
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```
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Go to: _[line-feed-escape](#user-content-line-feed-escape), [carriage-return-escape](#user-content-carriage-return-escape), [double-quote-escape](#user-content-double-quote-escape), [backslash-escape](#user-content-backslash-escape), [null-character-escape](#user-content-null-character-escape), [single-quote-escape](#user-content-single-quote-escape), [horizontal-tab-escape](#user-content-horizontal-tab-escape)_;
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Go to: _[carriage-return-escape](#user-content-carriage-return-escape), [backslash-escape](#user-content-backslash-escape), [line-feed-escape](#user-content-line-feed-escape), [horizontal-tab-escape](#user-content-horizontal-tab-escape), [null-character-escape](#user-content-null-character-escape), [single-quote-escape](#user-content-single-quote-escape), [double-quote-escape](#user-content-double-quote-escape)_;
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<a name="ascii-character-escape"></a>
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@ -865,7 +865,7 @@ string-literal-element = not-double-quote-or-backslash
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/ unicode-character-escape
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```
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Go to: _[simple-character-escape](#user-content-simple-character-escape), [unicode-character-escape](#user-content-unicode-character-escape), [not-double-quote-or-backslash](#user-content-not-double-quote-or-backslash), [ascii-character-escape](#user-content-ascii-character-escape)_;
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Go to: _[unicode-character-escape](#user-content-unicode-character-escape), [not-double-quote-or-backslash](#user-content-not-double-quote-or-backslash), [simple-character-escape](#user-content-simple-character-escape), [ascii-character-escape](#user-content-ascii-character-escape)_;
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The ones above are all the atomic literals
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@ -885,7 +885,7 @@ atomic-literal = untyped-literal
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/ string-literal
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```
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Go to: _[character-literal](#user-content-character-literal), [unsigned-literal](#user-content-unsigned-literal), [signed-literal](#user-content-signed-literal), [address-literal](#user-content-address-literal), [field-literal](#user-content-field-literal), [untyped-literal](#user-content-untyped-literal), [product-group-literal](#user-content-product-group-literal), [string-literal](#user-content-string-literal), [boolean-literal](#user-content-boolean-literal)_;
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Go to: _[untyped-literal](#user-content-untyped-literal), [character-literal](#user-content-character-literal), [unsigned-literal](#user-content-unsigned-literal), [boolean-literal](#user-content-boolean-literal), [signed-literal](#user-content-signed-literal), [address-literal](#user-content-address-literal), [field-literal](#user-content-field-literal), [string-literal](#user-content-string-literal), [product-group-literal](#user-content-product-group-literal)_;
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After defining the (mostly) alphanumeric tokens above,
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@ -929,7 +929,7 @@ token = keyword
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/ symbol
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```
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Go to: _[identifier](#user-content-identifier), [annotation-name](#user-content-annotation-name), [package-name](#user-content-package-name), [keyword](#user-content-keyword), [symbol](#user-content-symbol), [atomic-literal](#user-content-atomic-literal)_;
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Go to: _[symbol](#user-content-symbol), [keyword](#user-content-keyword), [identifier](#user-content-identifier), [atomic-literal](#user-content-atomic-literal), [package-name](#user-content-package-name), [annotation-name](#user-content-annotation-name)_;
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Tokens, comments, and whitespace are lexemes, i.e. lexical units.
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@ -939,7 +939,7 @@ Tokens, comments, and whitespace are lexemes, i.e. lexical units.
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lexeme = token / comment / whitespace
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```
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Go to: _[token](#user-content-token), [whitespace](#user-content-whitespace), [comment](#user-content-comment)_;
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Go to: _[token](#user-content-token), [comment](#user-content-comment), [whitespace](#user-content-whitespace)_;
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@ -996,7 +996,7 @@ group-type = %s"group"
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arithmetic-type = integer-type / field-type / group-type
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```
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Go to: _[field-type](#user-content-field-type), [group-type](#user-content-group-type), [integer-type](#user-content-integer-type)_;
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Go to: _[integer-type](#user-content-integer-type), [field-type](#user-content-field-type), [group-type](#user-content-group-type)_;
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The arithmetic types, along with the boolean, address, and character types,
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@ -1022,7 +1022,7 @@ character-type = %s"char"
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scalar-type = boolean-type / arithmetic-type / address-type / character-type
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```
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Go to: _[boolean-type](#user-content-boolean-type), [arithmetic-type](#user-content-arithmetic-type), [character-type](#user-content-character-type), [address-type](#user-content-address-type)_;
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Go to: _[character-type](#user-content-character-type), [arithmetic-type](#user-content-arithmetic-type), [boolean-type](#user-content-boolean-type), [address-type](#user-content-address-type)_;
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A tuple type consists of zero, two, or more component types.
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@ -1043,27 +1043,28 @@ Each dimension is either a natural or is unspecified.
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<a name="array-type"></a>
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```abnf
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array-type = "[" type ";" array-dimensions "]"
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array-type = "[" type ";" array-type-dimensions "]"
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```
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Go to: _[array-dimensions](#user-content-array-dimensions), [type](#user-content-type)_;
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Go to: _[type](#user-content-type), [array-type-dimensions](#user-content-array-type-dimensions)_;
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<a name="array-dimension"></a>
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<a name="array-type-dimension"></a>
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```abnf
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array-dimension = natural / "_"
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array-type-dimension = natural / "_"
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```
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Go to: _[natural](#user-content-natural)_;
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<a name="array-dimensions"></a>
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<a name="array-type-dimensions"></a>
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```abnf
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array-dimensions = array-dimension
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/ "(" array-dimension *( "," array-dimension ) ")"
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array-type-dimensions = array-type-dimension
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/ "(" array-type-dimension
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*( "," array-type-dimension ) ")"
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```
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Go to: _[array-dimension](#user-content-array-dimension)_;
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Go to: _[array-type-dimension](#user-content-array-type-dimension)_;
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The keyword `Self` denotes the enclosing circuit type.
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@ -1089,7 +1090,7 @@ form all the types.
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type = scalar-type / tuple-type / array-type / identifier / self-type
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```
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Go to: _[array-type](#user-content-array-type), [scalar-type](#user-content-scalar-type), [tuple-type](#user-content-tuple-type), [identifier](#user-content-identifier), [self-type](#user-content-self-type)_;
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Go to: _[scalar-type](#user-content-scalar-type), [array-type](#user-content-array-type), [tuple-type](#user-content-tuple-type), [self-type](#user-content-self-type), [identifier](#user-content-identifier)_;
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It is convenient to introduce a rule for types that are
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@ -1178,7 +1179,7 @@ primary-expression = identifier
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/ circuit-expression
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```
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Go to: _[tuple-expression](#user-content-tuple-expression), [array-expression](#user-content-array-expression), [identifier](#user-content-identifier), [literal](#user-content-literal), [expression](#user-content-expression), [circuit-expression](#user-content-circuit-expression)_;
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Go to: _[identifier](#user-content-identifier), [array-expression](#user-content-array-expression), [literal](#user-content-literal), [expression](#user-content-expression), [tuple-expression](#user-content-tuple-expression), [circuit-expression](#user-content-circuit-expression)_;
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Tuple expressions construct tuples.
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@ -1228,10 +1229,19 @@ Go to: _[expression](#user-content-expression)_;
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<a name="array-repeat-construction"></a>
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```abnf
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array-repeat-construction = "[" expression ";" array-dimensions "]"
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array-repeat-construction = "[" expression ";" array-expression-dimensions "]"
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```
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Go to: _[expression](#user-content-expression), [array-dimensions](#user-content-array-dimensions)_;
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Go to: _[expression](#user-content-expression), [array-expression-dimensions](#user-content-array-expression-dimensions)_;
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<a name="array-expression-dimensions"></a>
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```abnf
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array-expression-dimensions = natural
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/ "(" natural *( "," natural ) ")"
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```
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Go to: _[natural](#user-content-natural)_;
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<a name="array-construction"></a>
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@ -1239,7 +1249,7 @@ Go to: _[expression](#user-content-expression), [array-dimensions](#user-content
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array-construction = array-inline-construction / array-repeat-construction
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```
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Go to: _[array-inline-construction](#user-content-array-inline-construction), [array-repeat-construction](#user-content-array-repeat-construction)_;
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Go to: _[array-repeat-construction](#user-content-array-repeat-construction), [array-inline-construction](#user-content-array-inline-construction)_;
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<a name="array-expression"></a>
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@ -1267,7 +1277,7 @@ circuit-construction = identifier-or-self-type "{"
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"}"
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```
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Go to: _[identifier-or-self-type](#user-content-identifier-or-self-type), [circuit-inline-element](#user-content-circuit-inline-element)_;
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Go to: _[circuit-inline-element](#user-content-circuit-inline-element), [identifier-or-self-type](#user-content-identifier-or-self-type)_;
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<a name="circuit-inline-element"></a>
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@ -1275,7 +1285,7 @@ Go to: _[identifier-or-self-type](#user-content-identifier-or-self-type), [circu
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circuit-inline-element = identifier ":" expression / identifier
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```
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Go to: _[identifier](#user-content-identifier), [expression](#user-content-expression)_;
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Go to: _[expression](#user-content-expression), [identifier](#user-content-identifier)_;
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<a name="circuit-expression"></a>
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@ -1326,7 +1336,7 @@ postfix-expression = primary-expression
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/ postfix-expression "[" [expression] ".." [expression] "]"
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```
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Go to: _[function-arguments](#user-content-function-arguments), [primary-expression](#user-content-primary-expression), [expression](#user-content-expression), [postfix-expression](#user-content-postfix-expression), [identifier](#user-content-identifier), [natural](#user-content-natural), [identifier-or-self-type](#user-content-identifier-or-self-type)_;
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Go to: _[identifier](#user-content-identifier), [natural](#user-content-natural), [expression](#user-content-expression), [primary-expression](#user-content-primary-expression), [identifier-or-self-type](#user-content-identifier-or-self-type), [postfix-expression](#user-content-postfix-expression), [function-arguments](#user-content-function-arguments)_;
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Unary operators have the highest operator precedence.
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@ -1340,7 +1350,7 @@ unary-expression = postfix-expression
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/ "-" unary-expression
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```
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Go to: _[unary-expression](#user-content-unary-expression), [postfix-expression](#user-content-postfix-expression)_;
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Go to: _[postfix-expression](#user-content-postfix-expression), [unary-expression](#user-content-unary-expression)_;
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Next in the operator precedence is exponentiation,
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@ -1354,7 +1364,7 @@ exponential-expression = unary-expression
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/ unary-expression "**" exponential-expression
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```
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Go to: _[exponential-expression](#user-content-exponential-expression), [unary-expression](#user-content-unary-expression)_;
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Go to: _[unary-expression](#user-content-unary-expression), [exponential-expression](#user-content-exponential-expression)_;
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Next in precedence come multiplication and division, both left-associative.
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@ -1417,7 +1427,7 @@ conjunctive-expression = equality-expression
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/ conjunctive-expression "&&" equality-expression
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```
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Go to: _[equality-expression](#user-content-equality-expression), [conjunctive-expression](#user-content-conjunctive-expression)_;
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Go to: _[conjunctive-expression](#user-content-conjunctive-expression), [equality-expression](#user-content-equality-expression)_;
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Next come disjunctive expressions, left-associative.
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@ -1441,7 +1451,7 @@ conditional-expression = disjunctive-expression
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":" conditional-expression
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```
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Go to: _[expression](#user-content-expression), [disjunctive-expression](#user-content-disjunctive-expression), [conditional-expression](#user-content-conditional-expression)_;
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Go to: _[disjunctive-expression](#user-content-disjunctive-expression), [expression](#user-content-expression), [conditional-expression](#user-content-conditional-expression)_;
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Those above are all the expressions.
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@ -1474,7 +1484,7 @@ statement = expression-statement
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/ block
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```
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Go to: _[loop-statement](#user-content-loop-statement), [expression-statement](#user-content-expression-statement), [console-statement](#user-content-console-statement), [block](#user-content-block), [return-statement](#user-content-return-statement), [variable-declaration](#user-content-variable-declaration), [constant-declaration](#user-content-constant-declaration), [assignment-statement](#user-content-assignment-statement), [conditional-statement](#user-content-conditional-statement)_;
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Go to: _[loop-statement](#user-content-loop-statement), [expression-statement](#user-content-expression-statement), [return-statement](#user-content-return-statement), [conditional-statement](#user-content-conditional-statement), [assignment-statement](#user-content-assignment-statement), [variable-declaration](#user-content-variable-declaration), [console-statement](#user-content-console-statement), [constant-declaration](#user-content-constant-declaration), [block](#user-content-block)_;
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<a name="block"></a>
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@ -1517,7 +1527,7 @@ variable-declaration = %s"let" identifier-or-identifiers [ ":" type ]
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"=" expression ";"
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```
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Go to: _[identifier-or-identifiers](#user-content-identifier-or-identifiers), [type](#user-content-type), [expression](#user-content-expression)_;
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Go to: _[identifier-or-identifiers](#user-content-identifier-or-identifiers), [expression](#user-content-expression), [type](#user-content-type)_;
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<a name="constant-declaration"></a>
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@ -1526,7 +1536,7 @@ constant-declaration = %s"const" identifier-or-identifiers [ ":" type ]
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"=" expression ";"
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```
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Go to: _[expression](#user-content-expression), [type](#user-content-type), [identifier-or-identifiers](#user-content-identifier-or-identifiers)_;
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Go to: _[identifier-or-identifiers](#user-content-identifier-or-identifiers), [type](#user-content-type), [expression](#user-content-expression)_;
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<a name="identifier-or-identifiers"></a>
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@ -1559,7 +1569,7 @@ conditional-statement = branch
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/ branch %s"else" conditional-statement
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```
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Go to: _[block](#user-content-block), [conditional-statement](#user-content-conditional-statement), [branch](#user-content-branch)_;
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Go to: _[branch](#user-content-branch), [block](#user-content-block), [conditional-statement](#user-content-conditional-statement)_;
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A loop statement implicitly defines a loop variable
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@ -1572,7 +1582,7 @@ loop-statement = %s"for" identifier %s"in" expression ".." [ "=" ] expression
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block
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```
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Go to: _[expression](#user-content-expression), [identifier](#user-content-identifier), [block](#user-content-block)_;
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Go to: _[block](#user-content-block), [expression](#user-content-expression), [identifier](#user-content-identifier)_;
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An assignment statement is straightforward.
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@ -1589,7 +1599,7 @@ assignment-operator = "=" / "+=" / "-=" / "*=" / "/=" / "**="
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assignment-statement = expression assignment-operator expression ";"
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```
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Go to: _[expression](#user-content-expression), [assignment-operator](#user-content-assignment-operator)_;
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Go to: _[assignment-operator](#user-content-assignment-operator), [expression](#user-content-expression)_;
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Console statements start with the `console` keyword,
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@ -1616,7 +1626,7 @@ console-call = assert-call
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/ print-call
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```
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Go to: _[print-call](#user-content-print-call), [assert-call](#user-content-assert-call)_;
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Go to: _[assert-call](#user-content-assert-call), [print-call](#user-content-print-call)_;
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<a name="assert-call"></a>
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@ -1645,7 +1655,7 @@ Go to: _[string-literal](#user-content-string-literal)_;
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print-call = print-function print-arguments
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```
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Go to: _[print-arguments](#user-content-print-arguments), [print-function](#user-content-print-function)_;
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Go to: _[print-function](#user-content-print-function), [print-arguments](#user-content-print-arguments)_;
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An annotation consists of an annotation name (which starts with `@`)
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@ -1658,7 +1668,7 @@ annotation = annotation-name
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[ "(" identifier *( "," identifier ) ")" ]
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```
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Go to: _[annotation-name](#user-content-annotation-name), [identifier](#user-content-identifier)_;
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Go to: _[identifier](#user-content-identifier), [annotation-name](#user-content-annotation-name)_;
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A function declaration defines a function.
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@ -1675,7 +1685,7 @@ function-declaration = *annotation %s"function" identifier
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block
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```
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Go to: _[identifier](#user-content-identifier), [type](#user-content-type), [block](#user-content-block), [function-parameters](#user-content-function-parameters)_;
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Go to: _[type](#user-content-type), [identifier](#user-content-identifier), [function-parameters](#user-content-function-parameters), [block](#user-content-block)_;
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<a name="function-parameters"></a>
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@ -1754,7 +1764,7 @@ circuit-declaration = %s"circuit" identifier
|
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*member-function-declaration "}"
|
||||
```
|
||||
|
||||
Go to: _[identifier](#user-content-identifier), [member-variable-declarations](#user-content-member-variable-declarations)_;
|
||||
Go to: _[member-variable-declarations](#user-content-member-variable-declarations), [identifier](#user-content-identifier)_;
|
||||
|
||||
|
||||
An import declaration consists of the `import` keyword
|
||||
@ -1776,7 +1786,7 @@ by using an explicit package name before the package path.
|
||||
import-declaration = %s"import" package-name "." package-path ";"
|
||||
```
|
||||
|
||||
Go to: _[package-name](#user-content-package-name), [package-path](#user-content-package-path)_;
|
||||
Go to: _[package-path](#user-content-package-path), [package-name](#user-content-package-name)_;
|
||||
|
||||
|
||||
<a name="package-path"></a>
|
||||
@ -1787,7 +1797,7 @@ package-path = "*"
|
||||
/ "(" package-path *( "," package-path ) [","] ")"
|
||||
```
|
||||
|
||||
Go to: _[package-path](#user-content-package-path), [identifier](#user-content-identifier), [package-name](#user-content-package-name)_;
|
||||
Go to: _[package-name](#user-content-package-name), [package-path](#user-content-package-path), [identifier](#user-content-identifier)_;
|
||||
|
||||
|
||||
A type alias declaration defines an identifier to stand for a type.
|
||||
@ -1813,7 +1823,7 @@ declaration = import-declaration
|
||||
/ type-alias-declaration
|
||||
```
|
||||
|
||||
Go to: _[circuit-declaration](#user-content-circuit-declaration), [import-declaration](#user-content-import-declaration), [function-declaration](#user-content-function-declaration), [constant-declaration](#user-content-constant-declaration), [type-alias-declaration](#user-content-type-alias-declaration)_;
|
||||
Go to: _[circuit-declaration](#user-content-circuit-declaration), [type-alias-declaration](#user-content-type-alias-declaration), [function-declaration](#user-content-function-declaration), [constant-declaration](#user-content-constant-declaration), [import-declaration](#user-content-import-declaration)_;
|
||||
|
||||
|
||||
<a name="file"></a>
|
||||
|
||||
@ -669,12 +669,13 @@ tuple-type = "(" [ type 1*( "," type ) ] ")"
|
||||
; or a tuple of one or more dimensions.
|
||||
; Each dimension is either a natural or is unspecified.
|
||||
|
||||
array-type = "[" type ";" array-dimensions "]"
|
||||
array-type = "[" type ";" array-type-dimensions "]"
|
||||
|
||||
array-dimension = natural / "_"
|
||||
array-type-dimension = natural / "_"
|
||||
|
||||
array-dimensions = array-dimension
|
||||
/ "(" array-dimension *( "," array-dimension ) ")"
|
||||
array-type-dimensions = array-type-dimension
|
||||
/ "(" array-type-dimension
|
||||
*( "," array-type-dimension ) ")"
|
||||
|
||||
; The keyword `Self` denotes the enclosing circuit type.
|
||||
; It is only allowed inside a circuit type declaration.
|
||||
@ -767,7 +768,10 @@ array-inline-construction = "["
|
||||
|
||||
array-inline-element = expression / "..." expression
|
||||
|
||||
array-repeat-construction = "[" expression ";" array-dimensions "]"
|
||||
array-repeat-construction = "[" expression ";" array-expression-dimensions "]"
|
||||
|
||||
array-expression-dimensions = natural
|
||||
/ "(" natural *( "," natural ) ")"
|
||||
|
||||
array-construction = array-inline-construction / array-repeat-construction
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user