Reject field names that are reserved words.

The list of reserved words is combined from C++ and the DB/DBD file parser.
This also requires a small change in the rules for generating the C name
from the DBD field name, since the aSub record has a field NOT; now if we
find the lower-case version is reserved, we use the original instead.
Since the aSubRecord.c file doesn't use prec->not this is back-compatible.

src/dbHost/DBD/Base.pm

@@ -6,9 +6,9 @@ use Carp;
 require Exporter;
 
 @ISA = qw(Exporter);
-@EXPORT = qw(&pushContext &popContext &dieContext &warnContext &identifier
-    &unquote &escapeCcomment &escapeCstring $RXident $RXname $RXuint $RXint
-    $RXhex $RXoct $RXuintx $RXintx $RXnum $RXdqs $RXsqs $RXstr);
+@EXPORT = qw(&pushContext &popContext &dieContext &warnContext &is_reserved
+    &identifier &unquote &escapeCcomment &escapeCstring $RXident $RXname
+    $RXuint $RXint $RXhex $RXoct $RXuintx $RXintx $RXnum $RXdqs $RXsqs $RXstr);
 
 
 our $RXident = qr/ [a-zA-Z] [a-zA-Z0-9_]* /x;
@@ -61,6 +61,21 @@ sub unquote (\$) {
     return $$s;
 }
 
+# Reserved words from C++ and the DB/DBD file parser
+my %reserved = map { $_ => undef } qw(and and_eq asm auto bitand bitor bool
+    break case catch char class compl const const_cast continue default delete
+    do double dynamic_cast else enum explicit export extern false float for
+    friend goto if inline int long mutable namespace new not not_eq operator or
+    or_eq private protected public register reinterpret_cast return short signed
+    sizeof static static_cast struct switch template this throw true try typedef
+    typeid typename union unsigned using virtual void volatile wchar_t while xor
+    xor_eq addpath alias breaktable choice device driver field function grecord
+    include info menu path record recordtype registrar variable);
+sub is_reserved {
+    my $id = shift;
+    return exists $reserved{$id};
+}
+
 sub identifier {
     my ($id, $what) = @_;
     unquote $id;
@@ -68,6 +83,9 @@ sub identifier {
     $id =~ m/^$RXident$/o or dieContext("Illegal $what '$id'",
         "Identifiers are used in C code so must start with a letter, followed",
         "by letters, digits and/or underscore characters only.");
+    dieContext("Illegal $what '$id'",
+        "Identifier is a C++ reserved word.")
+        if is_reserved($id);
     return $id;
 }
 

src/dbHost/DBD/Recfield.pm

@@ -99,9 +99,19 @@ sub check_valid {
         if (defined($default) and !$this->legal_value($default));
 }
 
+# The C structure member name is usually the field name converted to
+# lower-case.  However if that is a reserved word, use the original.
+sub C_name {
+    my ($this) = @_;
+    my $name = lc $this->name;
+    $name = $this->name
+        if is_reserved($name);
+    return $name;
+}
+
 sub toDeclaration {
     my ($this, $ctype) = @_;
-    my $name = lc $this->name;
+    my $name = $this->C_name;
     my $result = sprintf "    %-19s %-12s", $ctype, "$name;";
     my $prompt = $this->attribute('prompt');
     $result .= "/* $prompt */" if defined $prompt;

src/dbHost/dbdToRecordtypeH.pl

@@ -122,13 +122,13 @@ sub oldtables {
         "{\n" .
         "    ${rn}Record *prec = 0;\n" .
         join("\n", map {
-                "    prt->papFldDes[${rn}Record$_]->size = " .
-                "sizeof(prec->" . lc($_) . ");"
-            } $rtyp->field_names) . "\n" .
+                "    prt->papFldDes[${rn}Record" . $_->name . "]->size = " .
+                "sizeof(prec->" . $_->C_name . ");"
+            } $rtyp->fields) . "\n" .
         join("\n", map {
-                "    prt->papFldDes[${rn}Record$_]->offset = " .
-                "(char *)&prec->" . lc($_) . " - (char *)prec;"
-            } $rtyp->field_names) . "\n" .
+                "    prt->papFldDes[${rn}Record" . $_->name . "]->offset = " .
+                "(char *)&prec->" . $_->C_name . " - (char *)prec;"
+            } $rtyp->fields) . "\n" .
         "    prt->rec_size = sizeof(*prec);\n" .
         "    return 0;\n" .
         "}\n" .
@@ -154,6 +154,7 @@ sub newtables {
         "static dbFldDes ${rn}FieldMetaData[] = {\n",
         join(",\n", map {
                 my $fn = $_->name;
+                my $cn = $_->C_name;
                 "    { ${rn}FieldName${fn}," .
                     $_->dbf_type . ',"' .
                     $_->attribute('initial') . '",' .
@@ -162,7 +163,7 @@ sub newtables {
                     ($_->attribute('interest') || '0') . ',' .
                     ($_->attribute('asl') || 'ASL0') . ',' .
                     $n++ . ",\n\t\&${rn}RecordMetaData," .
-                    "GEOMETRY_DATA(${rn}Record," . lc($fn) . ') }';
+                    "GEOMETRY_DATA(${rn}Record,$cn) }";
             } $rtyp->fields),
         "\n};\n\n";
     print OUTFILE "static const ${rn}FieldIndex ${rn}RecordLinkFieldIndices[] = {\n",