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Diffstat (limited to 'docs/miscellaneous.rst')
| -rw-r--r-- | docs/miscellaneous.rst | 65 |
1 files changed, 64 insertions, 1 deletions
diff --git a/docs/miscellaneous.rst b/docs/miscellaneous.rst index 9b067fb1..304fce14 100644 --- a/docs/miscellaneous.rst +++ b/docs/miscellaneous.rst @@ -130,7 +130,7 @@ index mentioned above. The encoding in the source mapping for the bytecode is more complicated: It is a list of ``s:l:f:j`` separated by ``;``. Each of these elements corresponds to an instruction, i.e. you cannot use the byte offset -but have to use the instruction offset or PC (program counter). +but have to use the instruction offset (push instructions are longer than a single byte). The fields ``s``, ``l`` and ``f`` are as above and ``j`` can be either ``i``, ``o`` or ``-`` signifying whether a jump instruction goes into a function, returns from a function or is a regular jump as part of e.g. a loop. @@ -202,6 +202,69 @@ Tips and Tricks Cheatsheet ********** +.. index:: 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 | ``++``, ``--`` | ++ +-------------------------------------+--------------------------------------------+ +| | Function-like call | ``<func>(<args...>)`` | ++ +-------------------------------------+--------------------------------------------+ +| | Array subscripting | ``<array>[<index>]`` | ++ +-------------------------------------+--------------------------------------------+ +| | Member access | ``<object>.<member>`` | ++ +-------------------------------------+--------------------------------------------+ +| | Parentheses | ``(<statement>)`` | ++------------+-------------------------------------+--------------------------------------------+ +| *2* | Prefix increment and decrement | ``++``, ``--`` | ++ +-------------------------------------+--------------------------------------------+ +| | Unary plus and minus | ``+``, ``-`` | ++ +-------------------------------------+--------------------------------------------+ +| | Unary operations | ``after``, ``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>`` | ++------------+-------------------------------------+--------------------------------------------+ +| *15* | Assignment operators | ``=``, ``|=``, ``^=``, ``&=``, ``<<=``, | +| | | ``>>=``, ``+=``, ``-=``, ``*=``, ``/=``, | +| | | ``%=`` | ++------------+-------------------------------------+--------------------------------------------+ +| *16* | Comma operator | ``,`` | ++------------+-------------------------------------+--------------------------------------------+ + .. index:: block, coinbase, difficulty, number, block;number, timestamp, block;timestamp, msg, data, gas, sender, value, now, gas price, origin, sha3, ripemd160, sha256, ecrecover, addmod, mulmod, cryptography, this, super, selfdestruct, balance, send Global Variables |