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Merge pull request #13048 from shadyy41/moving-operator-precedence

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Move operator precedence from cheatsheet to operators
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Kamil Śliwak 2022-05-25 23:50:57 +02:00 committed by GitHub
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2 changed files with 66 additions and 60 deletions
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62
docs/cheatsheet.rst
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@ -2,70 +2,12 @@
Cheatsheet Cheatsheet
********** **********
.. index:: precedence .. index:: operator; precedence
.. _order:
Order of Precedence of Operators Order of Precedence of Operators
================================ ================================
The following is the order of precedence for operators, listed in order of evaluation. :ref:`order`
+------------+-------------------------------------+--------------------------------------------+
| Precedence | Description | Operator |
+============+=====================================+============================================+
| *1* | Postfix increment and decrement | ``++``, ``--`` |
+ +-------------------------------------+--------------------------------------------+
| | New expression | ``new <typename>`` |
+ +-------------------------------------+--------------------------------------------+
| | Array subscripting | ``<array>[<index>]`` |
+ +-------------------------------------+--------------------------------------------+
| | Member access | ``<object>.<member>`` |
+ +-------------------------------------+--------------------------------------------+
| | Function-like call | ``<func>(<args...>)`` |
+ +-------------------------------------+--------------------------------------------+
| | Parentheses | ``(<statement>)`` |
+------------+-------------------------------------+--------------------------------------------+
| *2* | Prefix increment and decrement | ``++``, ``--`` |
+ +-------------------------------------+--------------------------------------------+
| | Unary minus | ``-`` |
+ +-------------------------------------+--------------------------------------------+
| | Unary operations | ``delete`` |
+ +-------------------------------------+--------------------------------------------+
| | Logical NOT | ``!`` |
+ +-------------------------------------+--------------------------------------------+
| | Bitwise NOT | ``~`` |
+------------+-------------------------------------+--------------------------------------------+
| *3* | Exponentiation | ``**`` |
+------------+-------------------------------------+--------------------------------------------+
| *4* | Multiplication, division and modulo | ``*``, ``/``, ``%`` |
+------------+-------------------------------------+--------------------------------------------+
| *5* | Addition and subtraction | ``+``, ``-`` |
+------------+-------------------------------------+--------------------------------------------+
| *6* | Bitwise shift operators | ``<<``, ``>>`` |
+------------+-------------------------------------+--------------------------------------------+
| *7* | Bitwise AND | ``&`` |
+------------+-------------------------------------+--------------------------------------------+
| *8* | Bitwise XOR | ``^`` |
+------------+-------------------------------------+--------------------------------------------+
| *9* | Bitwise OR | ``|`` |
+------------+-------------------------------------+--------------------------------------------+
| *10* | Inequality operators | ``<``, ``>``, ``<=``, ``>=`` |
+------------+-------------------------------------+--------------------------------------------+
| *11* | Equality operators | ``==``, ``!=`` |
+------------+-------------------------------------+--------------------------------------------+
| *12* | Logical AND | ``&&`` |
+------------+-------------------------------------+--------------------------------------------+
| *13* | Logical OR | ``||`` |
+------------+-------------------------------------+--------------------------------------------+
| *14* | Ternary operator | ``<conditional> ? <if-true> : <if-false>`` |
+ +-------------------------------------+--------------------------------------------+
| | Assignment operators | ``=``, ``|=``, ``^=``, ``&=``, ``<<=``, |
| | | ``>>=``, ``+=``, ``-=``, ``*=``, ``/=``, |
| | | ``%=`` |
+------------+-------------------------------------+--------------------------------------------+
| *15* | Comma operator | ``,`` |
+------------+-------------------------------------+--------------------------------------------+
.. index:: assert, block, coinbase, difficulty, number, block;number, timestamp, block;timestamp, msg, data, gas, sender, value, gas price, origin, revert, require, keccak256, ripemd160, sha256, ecrecover, addmod, mulmod, cryptography, this, super, selfdestruct, balance, codehash, send .. index:: assert, block, coinbase, difficulty, number, block;number, timestamp, block;timestamp, msg, data, gas, sender, value, gas price, origin, revert, require, keccak256, ripemd160, sha256, ecrecover, addmod, mulmod, cryptography, this, super, selfdestruct, balance, codehash, send

64
docs/types/operators.rst
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@ -108,3 +108,67 @@ value it referred to previously.
assert(y.length == 0); assert(y.length == 0);
} }
} }
.. index:: ! operator; precedence
.. _order:
Order of Precedence of Operators
--------------------------------
The following is the order of precedence for operators, listed in order of evaluation.
+------------+-------------------------------------+--------------------------------------------+
| Precedence | Description | Operator |
+============+=====================================+============================================+
| *1* | Postfix increment and decrement | ``++``, ``--`` |
+ +-------------------------------------+--------------------------------------------+
| | New expression | ``new <typename>`` |
+ +-------------------------------------+--------------------------------------------+
| | Array subscripting | ``<array>[<index>]`` |
+ +-------------------------------------+--------------------------------------------+
| | Member access | ``<object>.<member>`` |
+ +-------------------------------------+--------------------------------------------+
| | Function-like call | ``<func>(<args...>)`` |
+ +-------------------------------------+--------------------------------------------+
| | Parentheses | ``(<statement>)`` |
+------------+-------------------------------------+--------------------------------------------+
| *2* | Prefix increment and decrement | ``++``, ``--`` |
+ +-------------------------------------+--------------------------------------------+
| | Unary minus | ``-`` |
+ +-------------------------------------+--------------------------------------------+
| | Unary operations | ``delete`` |
+ +-------------------------------------+--------------------------------------------+
| | Logical NOT | ``!`` |
+ +-------------------------------------+--------------------------------------------+
| | Bitwise NOT | ``~`` |
+------------+-------------------------------------+--------------------------------------------+
| *3* | Exponentiation | ``**`` |
+------------+-------------------------------------+--------------------------------------------+
| *4* | Multiplication, division and modulo | ``*``, ``/``, ``%`` |
+------------+-------------------------------------+--------------------------------------------+
| *5* | Addition and subtraction | ``+``, ``-`` |
+------------+-------------------------------------+--------------------------------------------+
| *6* | Bitwise shift operators | ``<<``, ``>>`` |
+------------+-------------------------------------+--------------------------------------------+
| *7* | Bitwise AND | ``&`` |
+------------+-------------------------------------+--------------------------------------------+
| *8* | Bitwise XOR | ``^`` |
+------------+-------------------------------------+--------------------------------------------+
| *9* | Bitwise OR | ``|`` |
+------------+-------------------------------------+--------------------------------------------+
| *10* | Inequality operators | ``<``, ``>``, ``<=``, ``>=`` |
+------------+-------------------------------------+--------------------------------------------+
| *11* | Equality operators | ``==``, ``!=`` |
+------------+-------------------------------------+--------------------------------------------+
| *12* | Logical AND | ``&&`` |
+------------+-------------------------------------+--------------------------------------------+
| *13* | Logical OR | ``||`` |
+------------+-------------------------------------+--------------------------------------------+
| *14* | Ternary operator | ``<conditional> ? <if-true> : <if-false>`` |
+ +-------------------------------------+--------------------------------------------+
| | Assignment operators | ``=``, ``|=``, ``^=``, ``&=``, ``<<=``, |
| | | ``>>=``, ``+=``, ``-=``, ``*=``, ``/=``, |
| | | ``%=`` |
+------------+-------------------------------------+--------------------------------------------+
| *15* | Comma operator | ``,`` |
+------------+-------------------------------------+--------------------------------------------+