diff options
Diffstat (limited to 'Doc/ref')
| -rw-r--r-- | Doc/ref/ref2.tex | 4 | ||||
| -rw-r--r-- | Doc/ref/ref5.tex | 30 | ||||
| -rw-r--r-- | Doc/ref/ref6.tex | 72 | ||||
| -rw-r--r-- | Doc/ref/ref7.tex | 38 | ||||
| -rw-r--r-- | Doc/ref/refa1.tex | 14 |
5 files changed, 76 insertions, 82 deletions
diff --git a/Doc/ref/ref2.tex b/Doc/ref/ref2.tex index 74aaae4..1956e02 100644 --- a/Doc/ref/ref2.tex +++ b/Doc/ref/ref2.tex @@ -318,8 +318,8 @@ String literals are described by the following lexical definitions: {"'" \token{shortstringitem}* "'" | '"' \token{shortstringitem}* '"'} \production{longstring} - {"'''" \token{longstringitem}* "'''" - | '"""' \token{longstringitem}* '"""'} + {"'''" \token{longstringitem}* "'''"} + \productioncont{| '"""' \token{longstringitem}* '"""'} \production{shortstringitem} {\token{shortstringchar} | \token{escapeseq}} \production{longstringitem} diff --git a/Doc/ref/ref5.tex b/Doc/ref/ref5.tex index 9ed9337..6005f51 100644 --- a/Doc/ref/ref5.tex +++ b/Doc/ref/ref5.tex @@ -54,8 +54,8 @@ categorized syntactically as atoms. The syntax for atoms is: \production{atom} {\token{identifier} | \token{literal} | \token{enclosure}} \production{enclosure} - {\token{parenth_form} | \token{list_display} - | \token{dict_display} | \token{string_conversion}} + {\token{parenth_form} | \token{list_display}} + \productioncont{| \token{dict_display} | \token{string_conversion}} \end{productionlist} @@ -112,9 +112,8 @@ Python supports string literals and various numeric literals: \begin{productionlist} \production{literal} - {\token{stringliteral} | \token{integer} - | \token{longinteger} | \token{floatnumber} - | \token{imagnumber}} + {\token{stringliteral} | \token{integer} | \token{longinteger}} + \productioncont{| \token{floatnumber} | \token{imagnumber}} \end{productionlist} Evaluation of a literal yields an object of the given type (string, @@ -439,13 +438,12 @@ series of arguments: \production{call} {\token{primary} "(" [\token{argument_list} [","]] ")"} \production{argument_list} - {\token{positional_arguments} ["," \token{keyword_arguments} - ["," "*" \token{expression} ["," "**" \token{expression}]]] - | \token{keyword_arguments} ["," "*" \token{expression} - ["," "**" \token{expression}]] - | "*" \token{expression} ["," "**" \token{expression}] - | "**" \token{expression} - } + {\token{positional_arguments} ["," \token{keyword_arguments}} + \productioncont{ ["," "*" \token{expression} ["," "**" \token{expression}]]]} + \productioncont{| \token{keyword_arguments} ["," "*" \token{expression}} + \productioncont{ ["," "**" \token{expression}]]} + \productioncont{| "*" \token{expression} ["," "**" \token{expression}]} + \productioncont{| "**" \token{expression}} \production{positional_arguments} {\token{expression} ("," \token{expression})*} \production{keyword_arguments} @@ -666,8 +664,8 @@ operators: \begin{productionlist} \production{m_expr} {\token{u_expr} | \token{m_expr} "*" \token{u_expr} - | \token{m_expr} "/" \token{u_expr} - | \token{m_expr} "\%" \token{u_expr}} + | \token{m_expr} "/" \token{u_expr}} + \productioncont{| \token{m_expr} "\%" \token{u_expr}} \production{a_expr} {\token{m_expr} | \token{aexpr} "+" \token{m_expr} \token{aexpr} "-" \token{m_expr}} @@ -801,8 +799,8 @@ interpretation that is conventional in mathematics: \production{comparison} {\token{or_expr} ( \token{comp_operator} \token{or_expr} )*} \production{comp_operator} - {"<" | ">" | "==" | ">=" | "<=" | "<>" | "!=" - | "is" ["not"] | ["not"] "in"} + {"<" | ">" | "==" | ">=" | "<=" | "<>" | "!="} + \productioncont{| "is" ["not"] | ["not"] "in"} \end{productionlist} Comparisons yield integer values: \code{1} for true, \code{0} for false. diff --git a/Doc/ref/ref6.tex b/Doc/ref/ref6.tex index 122f499..7710472 100644 --- a/Doc/ref/ref6.tex +++ b/Doc/ref/ref6.tex @@ -6,22 +6,21 @@ Several simple statements may occur on a single line separated by semicolons. The syntax for simple statements is: \begin{productionlist} - \production{simple_stmt} - {\token{expression_stmt} - | \token{assert_stmt} - | \token{assignment_stmt} - | \token{augmented_assignment_stmt} - | \token{pass_stmt} - | \token{del_stmt} - | \token{print_stmt} - | \token{return_stmt} - | \token{yield_stmt} - | \token{raise_stmt} - | \token{break_stmt} - | \token{continue_stmt} - | \token{import_stmt} - | \token{global_stmt} - | \token{exec_stmt}} + \production{simple_stmt}{\token{expression_stmt}} + \productioncont{| \token{assert_stmt}} + \productioncont{| \token{assignment_stmt}} + \productioncont{| \token{augmented_assignment_stmt}} + \productioncont{| \token{pass_stmt}} + \productioncont{| \token{del_stmt}} + \productioncont{| \token{print_stmt}} + \productioncont{| \token{return_stmt}} + \productioncont{| \token{yield_stmt}} + \productioncont{| \token{raise_stmt}} + \productioncont{| \token{break_stmt}} + \productioncont{| \token{continue_stmt}} + \productioncont{| \token{import_stmt}} + \productioncont{| \token{global_stmt}} + \productioncont{| \token{exec_stmt}} \end{productionlist} @@ -112,12 +111,12 @@ objects: \production{target_list} {\token{target} ("," \token{target})* [","]} \production{target} - {\token{identifier} - | "(" \token{target_list} ")" - | "[" \token{target_list} "]" - | \token{attributeref} - | \token{subscription} - | \token{slicing}} + {\token{identifier}} + \productioncont{| "(" \token{target_list} ")"} + \productioncont{| "[" \token{target_list} "]"} + \productioncont{| \token{attributeref}} + \productioncont{| \token{subscription}} + \productioncont{| \token{slicing}} \end{productionlist} (See section~\ref{primaries} for the syntax definitions for the last @@ -264,7 +263,7 @@ print x \end{verbatim} -\subsection{Augmented Assignment statements \label{augassign}} +\subsection{Augmented assignment statements \label{augassign}} Augmented assignment is the combination, in a single statement, of a binary operation and an assignment statement: @@ -275,15 +274,8 @@ operation and an assignment statement: \production{augmented_assignment_stmt} {\token{target} \token{augop} \token{expression_list}} \production{augop} - {"+=" | "-=" | "*=" | "/=" | "\%=" | "**=" - | ">>=" | "<<=" | "\&=" | "\textasciicircum=" | "|="} - \production{target} - {\token{identifier} - | "(" \token{target_list} ")" - | "[" \token{target_list} "]" - | \token{attributeref} - | \token{subscription} - | \token{slicing}} + {"+=" | "-=" | "*=" | "/=" | "\%=" | "**="} + \productioncont{| ">>=" | "<<=" | "\&=" | "\textasciicircum=" | "|="} \end{productionlist} (See section~\ref{primaries} for the syntax definitions for the last @@ -364,9 +356,9 @@ right type (but even this is determined by the sliced object). \begin{productionlist} \production{print_stmt} - {"print" ( \optional{\token{expression} ("," \token{expression})* \optional{","}} - | ">\code{>}" \token{expression} - \optional{("," \token{expression})+ \optional{","}})} + {"print" ( \optional{\token{expression} ("," \token{expression})* \optional{","}}} + \productioncont{| ">\code{>}" \token{expression} + \optional{("," \token{expression})+ \optional{","}} )} \end{productionlist} \keyword{print} evaluates each expression in turn and writes the @@ -600,11 +592,11 @@ It continues with the next cycle of the nearest enclosing loop. \begin{productionlist} \production{import_stmt} {"import" \token{module} ["as" \token{name}] - ( "," \token{module} ["as" \token{name}] )* - | "from" \token{module} "import" \token{identifier} - ["as" \token{name}] - ( "," \token{identifier} ["as" \token{name}] )* - | "from" \token{module} "import" "*"} + ( "," \token{module} ["as" \token{name}] )*} + \productioncont{| "from" \token{module} "import" \token{identifier} + ["as" \token{name}]} + \productioncont{ ( "," \token{identifier} ["as" \token{name}] )*} + \productioncont{| "from" \token{module} "import" "*"} \production{module} {(\token{identifier} ".")* \token{identifier}} \end{productionlist} diff --git a/Doc/ref/ref7.tex b/Doc/ref/ref7.tex index f22be71..eeff1aa 100644 --- a/Doc/ref/ref7.tex +++ b/Doc/ref/ref7.tex @@ -42,8 +42,12 @@ Summarizing: \begin{productionlist} \production{compound_stmt} - {\token{if_stmt} | \token{while_stmt} | \token{for_stmt} - | \token{try_stmt} | \token{funcdef} | \token{classdef}} + {\token{if_stmt}} + \productioncont{| \token{while_stmt}} + \productioncont{| \token{for_stmt}} + \productioncont{| \token{try_stmt}} + \productioncont{| \token{funcdef}} + \productioncont{| \token{classdef}} \production{suite} {\token{stmt_list} NEWLINE | NEWLINE INDENT \token{statement}+ DEDENT} @@ -73,9 +77,9 @@ The \keyword{if} statement is used for conditional execution: \begin{productionlist} \production{if_stmt} - {"if" \token{expression} ":" \token{suite} - ( "elif" \token{expression} ":" \token{suite} )* - ["else" ":" \token{suite}]} + {"if" \token{expression} ":" \token{suite}} + \productioncont{( "elif" \token{expression} ":" \token{suite} )*} + \productioncont{["else" ":" \token{suite}]} \end{productionlist} It selects exactly one of the suites by evaluating the expressions one @@ -97,8 +101,8 @@ as an expression is true: \begin{productionlist} \production{while_stmt} - {"while" \token{expression} ":" \token{suite} - ["else" ":" \token{suite}]} + {"while" \token{expression} ":" \token{suite}} + \productioncont{["else" ":" \token{suite}]} \end{productionlist} This repeatedly tests the expression and, if it is true, executes the @@ -126,8 +130,8 @@ sequence (such as a string, tuple or list) or other iterable object: \begin{productionlist} \production{for_stmt} {"for" \token{target_list} "in" \token{expression_list} - ":" \token{suite} - ["else" ":" \token{suite}]} + ":" \token{suite}} + \productioncont{["else" ":" \token{suite}]} \end{productionlist} The expression list is evaluated once; it should yield a sequence. The @@ -192,10 +196,10 @@ code for a group of statements: \production{try_stmt} {\token{try_exc_stmt} | \token{try_fin_stmt}} \production{try_exc_stmt} - {"try" ":" \token{suite} - ("except" [\token{expression} ["," \token{target}]] ":" - \token{suite})+ - ["else" ":" \token{suite}]} + {"try" ":" \token{suite}} + \productioncont{("except" [\token{expression} + ["," \token{target}]] ":" \token{suite})+} + \productioncont{["else" ":" \token{suite}]} \production{try_fin_stmt} {"try" ":" \token{suite} "finally" ":" \token{suite}} @@ -310,10 +314,10 @@ section \ref{types}): {"def" \token{funcname} "(" [\token{parameter_list}] ")" ":" \token{suite}} \production{parameter_list} - {(\token{defparameter} ",")* - ("*" \token{identifier} [, "**" \token{identifier}] - | "**" \token{identifier} - | \token{defparameter} [","])} + {(\token{defparameter} ",")*} + \productioncont{("*" \token{identifier} [, "**" \token{identifier}]} + \productioncont{| "**" \token{identifier} + | \token{defparameter} [","])} \production{defparameter} {\token{parameter} ["=" \token{expression}]} \production{sublist} diff --git a/Doc/ref/refa1.tex b/Doc/ref/refa1.tex index 4cd10d5..bf40c2d 100644 --- a/Doc/ref/refa1.tex +++ b/Doc/ref/refa1.tex @@ -20,13 +20,13 @@ versions of Python that introduce incompatible changes to the language. It allows use of the new features on a per-module basis before the release in which the feature becomes standard. -\begin{verbatim} -future_statement: "from" "__future__" "import" feature ["as" name] - ("," feature ["as" name])* - -feature: identifier -name: identifier -\end{verbatim} +\begin{productionlist}[*] + \production{future_statement} + {"from" "__future__" "import" feature ["as" name]} + \productioncont{("," feature ["as" name])*} + \production{feature}{identifier} + \production{name}{identifier} +\end{productionlist} A future statement must appear near the top of the module. The only lines that can appear before a future statement are: |