bool EvaluatePOET::match_lookahead(POETCode* r1, POETCode* cur_filter)
{
#ifdef DEBUG_LOOKAHEAD
std::cerr << "trying to match " << r1->toString() << " with lookahead:" << cur_filter->toString() << "\n";
#endif
POETCode* r1_first = get_head(r1);
switch (cur_filter->get_enum()) {
case SRC_STRING:
case SRC_ICONST: return (cur_filter == r1_first);
case SRC_CVAR: /* a code template token */
return (r1_first->get_enum() == SRC_CVAR &&
static_cast<CodeVar*>(r1_first)->get_entry() ==
static_cast<CodeVar*>(cur_filter)->get_entry());
case SRC_TYPE:
return (match_Type(r1_first, static_cast<POETType*>(cur_filter),
MATCH_AST_PATTERN));
case SRC_TUPLE: /*QY: multiple lookahead tokens*/
{
POETTuple* tuple = static_cast<POETTuple*>(cur_filter);
for (unsigned i = 0; i < tuple->size(); ++i) {
if (!match_lookahead(r1_first, tuple->get_entry(i))) return false;
r1_first = NextToken(r1);
}
return true;
}
case SRC_OP: {
POETParseList* parse = dynamic_cast<POETParseList*>(cur_filter);
if (parse != 0) return parse->match_lookahead(this,r1);
}
default: std::cerr << "Unexpected: " << cur_filter->toString() << "\n"; assert(0);
}
return false;
}
void set_code_xform_parameters( Entry e, POETCode* par)
{
POETCode* p = e.get_param();
if (p == 0)
e.set_param(par);
else {
if (p != par && !match_AST(p, par, MATCH_AST_EQ)) {
std::cerr << "par=" << par << "; p = " << p << "\n";
SYM_DIFF_DEFINED(par->get_className() + ":" + par->toString(OUTPUT_VAR_VAL), p->get_className() + ":" + p->toString(OUTPUT_VAR_VAL));
}
return;
}
switch (par->get_enum()) {
case SRC_LVAR:
static_cast<LocalVar*>(par)->get_entry().set_code(ASTFactory::inst()->new_iconst(0));
break;
case SRC_TUPLE: {
POETTuple* vec = static_cast<POETTuple*>(par);
for (unsigned i = 0; i < vec->size(); ++i)
{
LocalVar* cur_par = dynamic_cast<LocalVar*>(vec->get_entry(i));
assert (cur_par != 0);
cur_par->get_entry().set_code(ASTFactory::inst()->new_iconst(i) );
}
break;
}
default:
assert(false);
}
}
bool ExamineParseFunctionResult()
{
if (res != 0 && res != EMPTY) {
POETTuple* vec = dynamic_cast<POETTuple*>(res);
if (vec == 0 || vec->size() != 2)
EXIT("ERROR: Parsing function must return a (code, rest-of-input) pair : " + res->toString() + "\n");
POETCode*res1 = vec->get_entry(1);
POETCode*res0 = vec->get_entry(0);
if (res1 != 0 && res1 != EMPTY && fullmatch == 0)
{ return false; }
r1 = res1; res = res0;
return true;
}
return false;
}
POETCode_ext_delegate(POETCode_ext* e, std::ostream& _out) : out(_out)
{
SgNode* input = (SgNode*)e->get_content();
POETCode* children = e->get_children();
POETTuple* t = dynamic_cast<POETTuple*>(children);
AstInterface::AstList c = AstInterface::GetChildrenList(input);
if (t == 0) {
assert(c.size() == 1);
SgNode* cur = (SgNode*)(c[0]);
if (POETAstInterface::find_Ast2POET(cur) != children)
repl[cur] = children;
}
else {
int i=0;
for (AstInterface::AstList::const_iterator p = c.begin(); p != c.end(); ++p,++i) {
SgNode* cur = (SgNode*)(*p);
POETCode *cur2 = t->get_entry(i);
if (POETAstInterface::find_Ast2POET(cur) != cur2) repl[cur] = cur2;
}
}
}
void CodeVar:: set_attr()
{
if (attr != 0) {
POETTuple * attrTuple = dynamic_cast<POETTuple*>(attr);
if (attrTuple == 0)
{
LocalVar* var = entry.get_attr(0);
assert (var != 0);
var->get_entry().set_code(attr);
}
else
{
unsigned size = attrTuple->size();
for (unsigned i = 0; i < size; ++i)
{
LocalVar* var = entry.get_attr(i);
assert(var != 0);
var->get_entry().set_code(attrTuple->get_entry(i));
}
}
}
}
void POETAstInterface::unparse(POETCode_ext* n, std::ostream& out, int align)
{
static SgUnparse_Info info;
static Unparser* roseUnparser = 0;
static POETCode* linebreak=ASTFactory::inst()->new_string("\n");
static POETCode* comma=ASTFactory::inst()->new_string(",");
static bool template_only=false;
static POETCode* left_over = 0;
SgNode * input = (SgNode*)n->get_content();
POETCode* res = POETAstInterface::find_Ast2POET(input);
if (res == n) {
if (template_only && input->variantT() == V_SgFunctionDeclaration)
{ left_over = LIST(n,left_over); }
else {
std::string res = input->unparseToCompleteString();
out << res;
}
}
else {
if (roseUnparser == 0) {
/* QY/2013: copied from the global unparseFile to use a different ostream and delegate*/
bool UseAutoKeyword = false;
bool generateLineDirectives = true;
bool useOverloadedOperators = false;
bool num = false;
bool _this = true;
bool caststring = false;
bool _debug = false;
bool _class = false;
bool _forced_transformation_format = false;
bool _unparse_includes = false;
Unparser_Opt roseOptions( UseAutoKeyword,
generateLineDirectives,
useOverloadedOperators,
num,
_this,
caststring,
_debug,
_class,
_forced_transformation_format,
_unparse_includes );
roseUnparser = new Unparser(&out, "", roseOptions);
}
switch (input->variantT()) {
case V_SgSourceFile:
{
SgSourceFile* f = isSgSourceFile(input);
info.set_current_scope(f->get_globalScope());
template_only = true;
code_gen(out, n->get_children(), 0, 0, align);
template_only = false;
if (left_over != 0) {
code_gen(out, left_over, 0, 0, align);
left_over = 0;
}
break;
}
case V_SgFunctionDeclaration:
if (template_only) { left_over = LIST(n, left_over); break; }
case V_SgTemplateInstantiationFunctionDecl:
{
SgFunctionDeclaration* d = isSgFunctionDeclaration(input);
roseUnparser->u_exprStmt->unparseAttachedPreprocessingInfo(d,info,PreprocessingInfo::before);
POETCode_ext_delegate repl(n, out);
roseUnparser->repl = &repl;
roseUnparser->u_exprStmt->unparseFuncDeclStmt(d, info);
break;
}
case V_SgFunctionDefinition:
{
SgStatement* d = isSgStatement(input);
POETCode_ext_delegate repl(n, out);
roseUnparser->repl = &repl;
roseUnparser->u_exprStmt->unparseStatement(d, info);
assert(n->get_children() != n);
out << "{"; code_gen(out, linebreak, 0, 0, align + 2);
code_gen(out, n->get_children(), 0, linebreak, align+2);
code_gen(out, linebreak, 0, 0, align); out << "}";
break;
}
case V_SgPragmaDeclaration:
{
out << "#pragma ";
POETTuple* c = dynamic_cast<POETTuple*>(n->get_children());
assert(c != 0);
code_gen(out, c->get_entry(0));
roseUnparser->cur << " "; roseUnparser->cur.insert_newline(1,align);
code_gen(out, c->get_entry(1), 0, 0, align);
break;
}
case V_SgForStatement:
{
out << "for (" ;
POETTuple* c = dynamic_cast<POETTuple*>(n->get_children());
assert(c != 0);
code_gen(out, c->get_entry(0));
code_gen(out, c->get_entry(1)); out << ";";
code_gen(out, c->get_entry(2)); out << ")";
break;
}
case V_SgExprStatement:
code_gen(out, n->get_children(), 0, 0, align);
out << ";";
break;
case V_SgTemplateInstantiationMemberFunctionDecl: break;
default:
std::cerr << "Unsupported unparsing for : " << input->class_name() << input->unparseToString() << "\n";
//assert(0);
}
}
}
