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d: improvements on symbol kinds

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public enum SymbolKind
    {
      S_YYEMPTY = -2,    /* No symbol.  */
      S_YYEOF = 0,       /* $end  */
      S_YYERROR = 1,     /* error  */
      S_YYUNDEF = 2,     /* $undefined  */
      S_EQ = 3,          /* "="  */

* data/skeletons/d.m4 (api.symbol.prefix): Default to S_.
Output the symbol kind definitions with a comment.
This commit is contained in:
Akim Demaille
2020-04-08 08:53:19 +02:00
parent 007e1b5f0a
commit 6c5f690da4
1 changed files with 20 additions and 19 deletions
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39
data/skeletons/d.m4
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@@ -148,11 +148,9 @@ private static immutable b4_int_type_for([$2])[[]] yy$1_ =
]) ])
## -------------------------- ## ## ------------- ##
## (External) token numbers. ## ## Token kinds. ##
## -------------------------- ## ## ------------- ##
b4_percent_define_default([[api.symbol.prefix]], [[YYSYMBOL_]])
# b4_token_enum(TOKEN-NAME, TOKEN-NUMBER) # b4_token_enum(TOKEN-NAME, TOKEN-NUMBER)
# --------------------------------------- # ---------------------------------------
@@ -165,7 +163,7 @@ m4_define([b4_token_enum],
# -------------- # --------------
# Output the definition of the tokens as enums. # Output the definition of the tokens as enums.
m4_define([b4_token_enums], m4_define([b4_token_enums],
[/* Tokens. */ [/* Token kinds. */
public enum YYTokenType { public enum YYTokenType {
/** Token returned by the scanner to signal the end of its input. */ /** Token returned by the scanner to signal the end of its input. */
@@ -174,19 +172,24 @@ b4_symbol_foreach([b4_token_enum])
} }
]) ])
## --------------------------- ##
## (Internal) symbol numbers. ##
## --------------------------- ## ## -------------- ##
## Symbol kinds. ##
## -------------- ##
b4_percent_define_default([[api.symbol.prefix]], [[S_]])
# b4_symbol_enum(SYMBOL-NUM) # b4_symbol_enum(SYMBOL-NUM)
# -------------------------- # --------------------------
# Output the definition of this symbol as an enum. # Output the definition of this symbol as an enum.
m4_define([b4_symbol_enum], m4_define([b4_symbol_enum],
[m4_ifval(b4_symbol([$1], [kind]), [m4_format([ %-30s %s],
[m4_format([[%s = %s]], m4_format([[%s = %s,]],
b4_symbol([$1], [kind]), b4_symbol([$1], [kind]),
b4_symbol([$1], [number]))])]) [$1]),
[b4_symbol_tag_comment([$1])])])
# b4_declare_symbol_enum # b4_declare_symbol_enum
@@ -195,14 +198,12 @@ m4_define([b4_symbol_enum],
# Defining YYEMPTY here is important: it forces the compiler # Defining YYEMPTY here is important: it forces the compiler
# to use a signed type, which matters for yytoken. # to use a signed type, which matters for yytoken.
m4_define([b4_declare_symbol_enum], m4_define([b4_declare_symbol_enum],
[[ /* Symbol type. */ [[ /* Symbol kinds. */
public enum SymbolKind public enum SymbolKind
{ {
]m4_join([, ]b4_symbol_kind([-2])[ = -2, /* No symbol. */
], ]b4_symbol_foreach([b4_symbol_enum])dnl
]b4_symbol_kind([-2])[ = -2, [ };
b4_symbol_map([b4_symbol_enum]))[
};
]])]) ]])])