1 files changed, 115 insertions, 0 deletions
diff --git a/src/mem/slicc/ast/PeekStatementAST.cc b/src/mem/slicc/ast/PeekStatementAST.cc
new file mode 100644
index 000000000..627e85ae8
--- /dev/null
+++ b/src/mem/slicc/ast/PeekStatementAST.cc
@@ -0,0 +1,115 @@
+
+/*
+ * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * PeekStatementAST.C
+ *
+ * Description: See PeekStatementAST.h
+ *
+ * $Id$
+ *
+ */
+
+#include "PeekStatementAST.hh"
+#include "SymbolTable.hh"
+#include "StatementListAST.hh"
+#include "TypeAST.hh"
+#include "VarExprAST.hh"
+
+PeekStatementAST::PeekStatementAST(VarExprAST* queue_name_ptr,
+                                   TypeAST* type_ptr,
+                                   StatementListAST* statementlist_ptr,
+                                   string method)
+  : StatementAST()
+{
+  m_queue_name_ptr = queue_name_ptr;
+  m_type_ptr = type_ptr;
+  m_statementlist_ptr = statementlist_ptr;
+  m_method = method;
+}
+
+PeekStatementAST::~PeekStatementAST()
+{
+  delete m_queue_name_ptr;
+  delete m_type_ptr;
+  delete m_statementlist_ptr;
+}
+
+void PeekStatementAST::generate(string& code, Type* return_type_ptr) const
+{
+  code += indent_str() + "{\n";  // Start scope
+  inc_indent();
+  g_sym_table.pushFrame();
+
+  Type* msg_type_ptr = m_type_ptr->lookupType();
+
+  // Add new local var to symbol table
+  g_sym_table.newSym(new Var("in_msg", getLocation(), msg_type_ptr, "(*in_msg_ptr)", getPairs()));
+
+  // Check the queue type
+  m_queue_name_ptr->assertType("InPort");
+
+  // Declare the new "in_msg_ptr" variable
+  code += indent_str() + "const " + msg_type_ptr->cIdent() + "* in_msg_ptr;\n";  // Declare message
+  //  code += indent_str() + "in_msg_ptr = static_cast<const ";
+  code += indent_str() + "in_msg_ptr = dynamic_cast<const ";
+  code += msg_type_ptr->cIdent() + "*>(";
+  code += "(" + m_queue_name_ptr->getVar()->getCode() + ")";
+  code += ".";
+  code += m_method;
+  code += "());\n";
+
+  code += indent_str() + "assert(in_msg_ptr != NULL);\n";        // Check the cast result
+
+  if(CHECK_INVALID_RESOURCE_STALLS) {
+    // Declare the "in_buffer_rank" variable
+    code += indent_str() + "int in_buffer_rank = ";  // Declare message
+    code += "(" + m_queue_name_ptr->getVar()->getCode() + ")";
+    code += ".getPriority();\n";
+  }
+
+  m_statementlist_ptr->generate(code, return_type_ptr);                // The other statements
+  dec_indent();
+  g_sym_table.popFrame();
+  code += indent_str() + "}\n";  // End scope
+}
+
+void PeekStatementAST::findResources(Map<Var*, string>& resource_list) const
+{
+  m_statementlist_ptr->findResources(resource_list);
+}
+
+void PeekStatementAST::print(ostream& out) const
+{
+  out << "[PeekStatementAST: " << m_method
+      << " queue_name: " << *m_queue_name_ptr
+      << " type: " << m_type_ptr->toString()
+      << " " << *m_statementlist_ptr
+      << "]";
+}