diff options
| -rw-r--r-- | lib/racc/rdoc/grammar.en.rdoc | 24 |
1 files changed, 12 insertions, 12 deletions
diff --git a/lib/racc/rdoc/grammar.en.rdoc b/lib/racc/rdoc/grammar.en.rdoc index 824d0ee13d..c00e19daff 100644 --- a/lib/racc/rdoc/grammar.en.rdoc +++ b/lib/racc/rdoc/grammar.en.rdoc @@ -4,12 +4,12 @@ == Class Block and User Code Block -There are two blocks on toplevel. One is 'class' block, another is 'user code' -block. 'user code' block MUST be placed after 'class' block. +There are two blocks on the toplevel. One is the 'class' block, the other is the 'user code' +block. The 'user code' block MUST be placed after the 'class' block. == Comments -You can insert comments about all places. Two style comments can be used, Ruby style '#.....' and C style '/\*......*\/'. +You can insert comments about all places. Two styles of comments can be used, Ruby style '#.....' and C style '/\*......*\/'. == Class Block @@ -25,11 +25,11 @@ The class block is formed like this: rule GRAMMARS -CLASS_NAME is a name of parser class. This is the name of generating parser +CLASS_NAME is a name of the parser class. This is the name of the generating parser class. -If CLASS_NAME includes '::', Racc outputs module clause. For example, writing -"class M::C" causes creating the code below: +If CLASS_NAME includes '::', Racc outputs the module clause. For example, writing +"class M::C" causes the code below to be created: module M class C @@ -40,7 +40,7 @@ If CLASS_NAME includes '::', Racc outputs module clause. For example, writing == Grammar Block -The grammar block describes grammar which is able to be understood by parser. +The grammar block describes grammar which is able to be understood by the parser. Syntax is: (token): (token) (token) (token).... (action) @@ -59,10 +59,10 @@ Note that you cannot use '%' string, here document, '%r' regexp in action. Actions can be omitted. When it is omitted, '' (empty string) is used. -A return value of action is a value of left side value ($$). It is value of -result, or returned value by `return` statement. +A return value of action is a value of the left side value ($$). It is the value of the +result, or the returned value by `return` statement. -Here is an example of whole grammar block. +Here is an example of the whole grammar block. rule goal: definition rules source { result = val } @@ -81,11 +81,11 @@ You can use the following special local variables in action: * result ($$) -The value of left-hand side (lhs). A default value is val[0]. +The value of the left-hand side (lhs). A default value is val[0]. * val ($1,$2,$3...) -An array of value of right-hand side (rhs). +An array of value of the right-hand side (rhs). * _values (...$-2,$-1,$0) |