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Some code and documentation improvements.

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* data/c.m4 (b4_table_value_equals): New macro to capture
some repeated code.
* data/glr.c (yyis_pact_ninf): Use it here.
(yyis_table_ninf): Likewise.
(yyreportSyntaxError): Improve internal comments.
* data/yacc.c (yyis_pact_ninf): New macro copied from glr.c.
Use it everywhere possible.
(yyis_table_ninf): Likewise.
(yysyntax_error): Improve internal comments.
* data/lalr1.cc (yysyntax_error_): Likewise.
* data/lalr1.java (yysyntax_error): Likewise.
* src/tables.h: Improve comments about yypact, yytable, etc.
(cherry picked from commit 8741288212)

Conflicts:

	data/lalr1.java
	data/yacc.c
This commit is contained in:
Joel E. Denny
2009-08-25 01:12:37 -04:00
parent 890ab17c84
commit 77373efad2
9 changed files with 216 additions and 168 deletions
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10
data/c.m4
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@@ -134,6 +134,16 @@ m4_define([b4_int_type_for],
[b4_int_type($1_min, $1_max)])
# b4_table_value_equals(TABLE, VALUE, LITERAL)
# --------------------------------------------
# Without inducing a comparison warning from the compiler, check if the
# literal value LITERAL equals VALUE from table TABLE, which must have
# TABLE_min and TABLE_max defined.
m4_define([b4_table_value_equals],
[m4_if(m4_eval($3 < m4_indir([b4_]$1[_min])
|| m4_indir([b4_]$1[_max]) < $3), [1],
[[YYID (0)]],
[[((]$2[) == (]$3[))]])])
## ---------##
## Values. ##