void Canonicalizer::do_ArrayLength (ArrayLength* x) {
NewArray* array = x->array()->as_NewArray();
if (array != NULL && array->length() != NULL) {
Constant* length = array->length()->as_Constant();
if (length != NULL) {
// do not use the Constant itself, but create a new Constant
// with same value Otherwise a Constant is live over multiple
// blocks without being registered in a state array.
assert(length->type()->as_IntConstant() != NULL, "array length must be integer");
set_constant(length->type()->as_IntConstant()->value());
}
} else {
LoadField* lf = x->array()->as_LoadField();
if (lf != NULL) {
ciField* field = lf->field();
if (field->is_constant() && field->is_static()) {
// final static field
ciObject* c = field->constant_value().as_object();
if (c->is_array()) {
ciArray* array = (ciArray*) c;
set_constant(array->length());
}
}
}
}
}
// This piece of code expands all the \newcolumntype commands
// There is a special case: nct_size=0, case where nothing is
// defined, and nothing has to be done. Otherwise, we loop over all
// characters. If there is one substitution, we try again.
// If for some reason, the character is invalid, we remove it from the table.
void token_ns::expand_nct(TokenList&L)
{
bool action = true;
if(the_parser.tracing_commands())
the_log << lg_start << "array preamble at start: " << L << "\n";
if(!new_array_object.has_a_nct()) return;
int max_iter = max_newcolumn_loops;
while(action) {
action = false;
max_iter--;
if(max_iter<=0) {
the_parser.parse_error("array preamble expansion: Infinite loop?");
return;
}
for(int i=1;i<int(nb_newcolumn);i++) {
uchar c = i;
if(!new_array_object.nct_exists(c)) continue;
Token T = new_array_object.nct_token(c);
int n = the_parser.nct_aux(T);
if(n==-1) {
new_array_object.remove_a_type(c);
continue;
}
if(expand_nct(L,T,n,c,max_iter)) {
action = true;
if(the_parser.tracing_commands())
the_log << "array preamble after " << c << ": " << L << "\n";
}
}
}
}
void Canonicalizer::do_ArrayLength (ArrayLength* x) {
NewArray* na;
Constant* ct;
LoadField* lf;
if ((na = x->array()->as_NewArray()) != NULL) {
// New arrays might have the known length.
// Do not use the Constant itself, but create a new Constant
// with same value Otherwise a Constant is live over multiple
// blocks without being registered in a state array.
Constant* length;
if (na->length() != NULL &&
(length = na->length()->as_Constant()) != NULL) {
assert(length->type()->as_IntConstant() != NULL, "array length must be integer");
set_constant(length->type()->as_IntConstant()->value());
}
} else if ((ct = x->array()->as_Constant()) != NULL) {
// Constant arrays have constant lengths.
ArrayConstant* cnst = ct->type()->as_ArrayConstant();
if (cnst != NULL) {
set_constant(cnst->value()->length());
}
} else if ((lf = x->array()->as_LoadField()) != NULL) {
ciField* field = lf->field();
if (field->is_static_constant()) {
assert(PatchALot || ScavengeRootsInCode < 2, "Constant field loads are folded during parsing");
ciObject* c = field->constant_value().as_object();
if (!c->is_null_object()) {
set_constant(c->as_array()->length());
}
}
}
}
void Canonicalizer::do_ArrayLength (ArrayLength* x) {
NewArray* array = x->array()->as_NewArray();
if (array != NULL && array->length() != NULL) {
Constant* length = array->length()->as_Constant();
if (length != NULL) {
set_canonical(length);
}
}
}
// This is \begin{tabular}. Should be in an environment (not necessarily)
void Parser::T_start_tabular (subtypes c)
{
Istring x = the_names[c==zero_code ? np_tabular : np_tabular_star];
if(the_stack.is_float())
leave_v_mode();
else if(the_stack.is_frame(np_fbox)) {}
else
leave_h_mode();
hash_table.eval_let_local("par","@empty");
the_stack.push1(x,np_table);
the_stack.add_att_to_last(np_rend,np_inline);
Xid id = the_stack.get_xid();
if(c!=0) { // case of tabular*
Token T = cur_tok;
TokenList L = mac_arg();
ScaledInt tab_width = dimen_from_list(T,L);
if(!tab_width.null())
id.add_attribute(the_names[np_tab_width],the_main->SH.find_scaled(tab_width));
get_token(); // eat the relax
if(!cur_cmd_chr.is_relax()) back_input();
}
{
int pos = get_ctb_opt(false); // Lamport does not mention c, who cares
if(pos) id.add_attribute(the_names[np_vpos], the_names[pos]);
}
new_array_object.run(id,true);
the_stack.set_array_mode(); // Is the mode ok ?
start_a_row(-1);
}
// Implements \newcolumntype{C}[opt]{body}
// as \newcommand\cmd[opt]{body}
// Here \cmd is some internal name, stored in nct_tok[C]
void Parser::T_newcolumn_type()
{
TokenList L = mac_arg();
uint c = 0;
if(L.empty()) parse_error("Empty argument to \\newcolumntype");
else if(L.size() != 1)
parse_error("More than one token in argument to \\newcolumntype");
else {
if(L.front().is_a_char())
c = L.front().char_val().get_value();
if(!(c>0 && c<nb_newcolumn)) {
parse_error("Argument to \\newcolumntype is not a 7bit character");
c= 0;
}
}
Buffer& B = hash_table.my_buffer();
B.reset();
B.push_back("newcolumtype@");
B.push_back(uchar(c)); // special hack if c=0 !
cur_tok = hash_table.locate(B);
new_array_object.add_a_type(c,cur_tok);
back_input();
get_new_command(rd_always,false); // definition is local
}
// If started is true, we have already started one
void Parser::start_a_cell(bool started)
{
if(!started) {
the_stack.push_pop_cell(push_only);
push_level(bt_cell);
}
remove_initial_space_and_back_input();
symcodes S = cur_cmd_chr.get_cmd();
if(S==unimp_cmd && cur_cmd_chr.get_chr()==omit_code) {
get_token();
the_stack.mark_omit_cell();
} else if(S==end_cmd) { // has to be \end{tabular}
the_stack.mark_omit_cell();
} else if(S==multicolumn_cmd) {
the_stack.mark_omit_cell();
get_token();
unprocessed_xml.remove_last_space();
Xid cid = the_stack.get_top_id();
new_array_object.run(cid,false);
} else {
TokenList L= the_stack.get_u_or_v(true);
back_input(L);
}
}
void Parser::boot_NAO()
{
new_array_object.boot(this);
}
