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Use b4_subtract where possible.

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* data/lalr1.cc (b4_subtract): Move to...
	* data/bison.m4: here.
	* data/glr.c (b4_rhs_data): Use it.
	* data/yacc.c (b4_rhs_value, b4_rhs_location): Use it.
This commit is contained in:
Akim Demaille
2008-11-17 08:48:00 +01:00
parent 6085ab0d78
commit bd187d7b65
5 changed files with 20 additions and 18 deletions
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8
ChangeLog
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@@ -1,3 +1,11 @@
2008-11-18 Akim Demaille <demaille@gostai.com>
Use b4_subtract where possible.
* data/lalr1.cc (b4_subtract): Move to...
* data/bison.m4: here.
* data/glr.c (b4_rhs_data): Use it.
* data/yacc.c (b4_rhs_value, b4_rhs_location): Use it.
2008-11-18 Akim Demaille <demaille@gostai.com>
Remove incorrect mode specification.

14
data/bison.m4
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@@ -212,6 +212,15 @@ m4_define([b4_ints_in],
[m4_eval([$3 <= $1 && $1 <= $4 && $3 <= $2 && $2 <= $4])])
# b4_subtract(LHS, RHS)
# ---------------------
# Evaluate LHS - RHS if they are integer literals, otherwise expand
# to (LHS) - (RHS).
m4_define([b4_subtract],
[m4_bmatch([$1$2], [^[0123456789]*$],
[m4_eval([$1 - $2])],
[($1) - ($2)])])
## ------------------ ##
## Decoding options. ##
@@ -257,11 +266,6 @@ b4_define_flag_if([nondeterministic]) # Whether conflicts should be handled.
b4_define_flag_if([yacc]) # Whether POSIX Yacc is emulated.
## ------------------------- ##
## Assigning token numbers. ##
## ------------------------- ##
## ----------- ##
## Synclines. ##
## ----------- ##

2
data/glr.c
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@@ -117,7 +117,7 @@ m4_define([b4_lhs_value],
# Expand to the semantic stack place that contains value and location
# of symbol number NUM in a rule of length RULE-LENGTH.
m4_define([b4_rhs_data],
[((yyGLRStackItem const *)yyvsp)@{YYFILL (($2) - ($1))@}.yystate])
[((yyGLRStackItem const *)yyvsp)@{YYFILL (b4_subtract([$2], [$1]))@}.yystate])
# b4_rhs_value(RULE-LENGTH, NUM, [TYPE])

10
data/lalr1.cc
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@@ -18,16 +18,6 @@
m4_include(b4_pkgdatadir/[c++.m4])
# b4_subtract(LHS, RHS)
# ---------------------
# Evaluate LHS - RHS if they are integer literals, otherwise expand
# to (LHS) - (RHS).
m4_define([b4_subtract],
[m4_bmatch([$1$2], [^[0123456789]*$],
[m4_eval([$1 - $2])],
[($1) - ($2)])])
# b4_args(ARG1, ...)
# _b4_args(ARG1, ...)
# -------------------

4
data/yacc.c
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@@ -124,7 +124,7 @@ m4_define([b4_lhs_value],
# Expansion of $<TYPE>NUM, where the current rule has RULE-LENGTH
# symbols on RHS.
m4_define([b4_rhs_value],
[b4_symbol_value([yyvsp@{($2) - ($1)@}], [$3])])
[b4_symbol_value([yyvsp@{b4_subtract([$2], [$1])@}], [$3])])
@@ -144,7 +144,7 @@ m4_define([b4_lhs_location],
# Expansion of @NUM, where the current rule has RULE-LENGTH symbols
# on RHS.
m4_define([b4_rhs_location],
[(yylsp@{($2) - ($1)@})])
[(yylsp@{b4_subtract([$2], [$1])@})])