* src/system.h: Provide default declarations for stpcpy, strndup,

[bison.git] / doc / bison.info-2

diff --git a/doc/bison.info-2 b/doc/bison.info-2
index 6433a01c7044e618a97f3312d836e3274e037fbd..2cf29fce779a3123d9e61df91d6205ac67536371 100644 (file)
--- a/doc/bison.info-2
+++ b/doc/bison.info-2
@@ -1,5 +1,5 @@
-Ceci est le fichier Info bison.info, produit par Makeinfo version 4.0 à
-partir bison.texinfo.
+Ceci est le fichier Info bison.info, produit par Makeinfo version 4.0b
+à partir bison.texinfo.
 
 START-INFO-DIR-ENTRY
 * bison: (bison).      GNU Project parser generator (yacc replacement).
@@ -28,6 +28,48 @@ License", "Conditions for Using Bison" and this permission notice may be
 included in translations approved by the Free Software Foundation
 instead of in the original English.
 
+\1f
+File: bison.info,  Node: Rpcalc Decls,  Next: Rpcalc Rules,  Up: RPN Calc
+
+Declarations for `rpcalc'
+-------------------------
+
+   Here are the C and Bison declarations for the reverse polish notation
+calculator.  As in C, comments are placed between `/*...*/'.
+
+     /* Reverse polish notation calculator. */
+     
+     %{
+     #define YYSTYPE double
+     #include <math.h>
+     %}
+     
+     %token NUM
+     
+     %% /* Grammar rules and actions follow */
+
+   The C declarations section (*note The C Declarations Section: C
+Declarations.) contains two preprocessor directives.
+
+   The `#define' directive defines the macro `YYSTYPE', thus specifying
+the C data type for semantic values of both tokens and groupings (*note
+Data Types of Semantic Values: Value Type.).  The Bison parser will use
+whatever type `YYSTYPE' is defined as; if you don't define it, `int' is
+the default.  Because we specify `double', each token and each
+expression has an associated value, which is a floating point number.
+
+   The `#include' directive is used to declare the exponentiation
+function `pow'.
+
+   The second section, Bison declarations, provides information to
+Bison about the token types (*note The Bison Declarations Section:
+Bison Declarations.).  Each terminal symbol that is not a
+single-character literal must be declared here.  (Single-character
+literals normally don't need to be declared.)  In this example, all the
+arithmetic operators are designated by single-character literals, so the
+only terminal symbol that needs to be declared is `NUM', the token type
+for numeric constants.
+
 \1f
 File: bison.info,  Node: Rpcalc Rules,  Next: Rpcalc Lexer,  Prev: Rpcalc Decls,  Up: RPN Calc
 
@@ -861,7 +903,7 @@ produces a C-language function that recognizes correct instances of the
 grammar.
 
    The Bison grammar input file conventionally has a name ending in
-`.y'.
+`.y'.  *Note Invoking Bison: Invocation.
 
 * Menu:
 
@@ -870,6 +912,7 @@ grammar.
 * Rules::             How to write grammar rules.
 * Recursion::         Writing recursive rules.
 * Semantics::         Semantic values and actions.
+* Locations::         Locations and actions.
 * Declarations::      All kinds of Bison declarations are described here.
 * Multiple Parsers::  Putting more than one Bison parser in one program.
 
@@ -1172,7 +1215,7 @@ defines two mutually-recursive nonterminals, since each refers to the
 other.
 
 \1f
-File: bison.info,  Node: Semantics,  Next: Declarations,  Prev: Recursion,  Up: Grammar File
+File: bison.info,  Node: Semantics,  Next: Locations,  Prev: Recursion,  Up: Grammar File
 
 Defining Language Semantics
 ===========================