Updating staq support to translate XACC IR to Cirq python, added cirq...

Updating staq support to translate XACC IR to Cirq python, added cirq accelerator targeting local simulator
Signed-off-by: Alex McCaskey <mccaskeyaj@ornl.gov>

python/CMakeLists.txt

@@ -43,6 +43,7 @@ install(DIRECTORY benchmark DESTINATION ${CMAKE_INSTALL_PREFIX})
 file(GLOB PYDECORATORS benchmark/chemistry/*.py
                        plugins/aer/*.py
                        plugins/dwave/*.py
+                       plugins/cirq/*.py
                        plugins/qiskit/*.py
                        plugins/observables/*.py
                        plugins/optimizers/*.py)

python/plugins/cirq/cirq_accelerator.py

+import xacc
+from pelix.ipopo.decorators import ComponentFactory, Property, Requires, Provides, \
+    Validate, Invalidate, Instantiate
+
+@ComponentFactory("cirq_accelerator_factory")
+@Provides("accelerator")
+@Property("_accelerator", "accelerator", "cirq")
+@Property("_name", "name", "cirq")
+@Instantiate("cirq_accelerator_instance")
+class CirqAccelerator(xacc.Accelerator):
+    def __init__(self):
+        xacc.Accelerator.__init__(self)
+        self.shots = 1024
+        self.backend = 'simulator'
+
+    def initialize(self, options):
+        if 'shots' in options:
+            self.shots = options['shots']
+
+
+        if 'backend' in options:
+            self.backend = options['backend']
+
+    def name(self):
+        return 'cirq'
+
+    def execute_one_qasm(self, buffer, program):
+        import cirq
+
+        staq = xacc.getCompiler('staq')
+        cirq_code = staq.translate(program, {'lang-type':'cirq'})
+        cirq_code = cirq_code[0:len(cirq_code)-15]
+        exec(cirq_code, globals(), globals())
+        # Now we have a circuit variable for execution with Cirq
+        simulator = cirq.Simulator()
+        result = simulator.run(circuit, repetitions=self.shots)
+        import re
+        qbit2keys = {}
+        for qq in q:
+            m = re.search(r"\[([0-9_]+)\]", str(qq))
+            qbit2keys[int(m.group(1))] = str(qq).replace('[', '_c[')
+
+        bs = []
+        for i in range(self.shots):
+            b = [0 for i in range(buffer.size())]
+            for k,v in qbit2keys.items():
+                b[k] = result._measurements[v][i][0]
+            bs.append(''.join([str(bb) for bb in b]))
+
+        [buffer.appendMeasurement(bb) for bb in bs]
+
+
+    def execute(self, buffer, programs):
+
+        # Translate IR to a Qobj Json String
+        if isinstance(programs, list) and len(programs) > 1:
+            for p in programs:
+                tmpBuffer = xacc.qalloc(buffer.size())
+                tmpBuffer.setName(p.name())
+                self.execute_one_qasm(tmpBuffer, p)
+                buffer.appendChild(p.name(),tmpBuffer)
+        else:
+            if isinstance(programs, list):
+                programs = programs[0]
+            self.execute_one_qasm(buffer, programs)
+

python/py_compiler.cpp

@@ -11,6 +11,7 @@
  *   Alexander J. McCaskey - initial API and implementation
  *******************************************************************************/
 #include "py_compiler.hpp"
+#include "py_heterogeneous_map.hpp"
 
 void bind_compiler(py::module &m) {
 
@@ -32,7 +33,22 @@ void bind_compiler(py::module &m) {
                xacc::Compiler::compile,
            "Compile the "
            "given source code.")
-      .def("translate", &xacc::Compiler::translate,
+      .def("translate",
+           (const std::string (xacc::Compiler::*)(
+               std::shared_ptr<CompositeInstruction>)) &
+               xacc::Compiler::translate,
            "Translate the given IR Function instance to source code in this "
-           "Compiler's language.");
+           "Compiler's language.")
+      .def(
+          "translate",
+          [](xacc::Compiler &c, std::shared_ptr<CompositeInstruction> prog,
+             const PyHeterogeneousMap &opts) {
+            xacc::HeterogeneousMap m;
+            for (auto &item : opts) {
+              PyHeterogeneousMap2HeterogeneousMap vis(m, item.first);
+              mpark::visit(vis, item.second);
+            }
+            return c.translate(prog, m);
+          },
+          "");
 }
\ No newline at end of file

python/py_ir.cpp

@@ -103,6 +103,7 @@ void bind_ir(py::module &m) {
             return c.expand(m);
           },
           "")
+      .def("__str__", &xacc::CompositeInstruction::toString, "")
       .def("eval", &xacc::CompositeInstruction::operator(), "")
       .def("name", &xacc::CompositeInstruction::name, "")
       .def("description", &xacc::CompositeInstruction::description, "")

quantum/plugins/staq/compiler/staq_compiler.cpp

@@ -25,6 +25,8 @@
 #include "transformations/oracle_synthesizer.hpp"
 #include "optimization/simplify.hpp"
 
+#include "output/cirq.hpp"
+
 using namespace staq::ast;
 
 namespace xacc {
@@ -94,7 +96,7 @@ std::shared_ptr<IR> StaqCompiler::compile(const std::string &src,
     _src = "OPENQASM 2.0;\n" + _src;
   }
 
-//   std::cout << " HELLO:\n" << _src << "\n";
+  //   std::cout << " HELLO:\n" << _src << "\n";
   using namespace staq;
   auto prog = parser::parse_string(_src);
   transformations::desugar(*prog);
@@ -176,35 +178,93 @@ std::shared_ptr<IR> StaqCompiler::compile(const std::string &src) {
 
 const std::string
 StaqCompiler::translate(std::shared_ptr<xacc::CompositeInstruction> function) {
-  std::map<std::string,int> bufNamesToSize;
+  std::map<std::string, int> bufNamesToSize;
   InstructionIterator iter(function);
   // First search buffer names and see if we have
-  while(iter.hasNext()) {
+  while (iter.hasNext()) {
     auto &next = *iter.next();
     if (next.isEnabled()) {
-        for (int i = 0; i < next.nRequiredBits(); i++) {
-            auto bufName = next.getBufferName(i);
-            int size = next.bits()[i]+1;
-            if (bufNamesToSize.count(bufName)) {
-                if (bufNamesToSize[bufName] < size) {
-                    bufNamesToSize[bufName] = size;
-                }
-            } else {
-                bufNamesToSize.insert({bufName, size});
-            }
+      for (int i = 0; i < next.nRequiredBits(); i++) {
+        auto bufName = next.getBufferName(i);
+        int size = next.bits()[i] + 1;
+        if (bufNamesToSize.count(bufName)) {
+          if (bufNamesToSize[bufName] < size) {
+            bufNamesToSize[bufName] = size;
+          }
+        } else {
+          bufNamesToSize.insert({bufName, size});
         }
+      }
     }
   }
 
-  auto translate = std::make_shared<internal_staq::XACCToStaqOpenQasm>(bufNamesToSize);
+  auto translate =
+      std::make_shared<internal_staq::XACCToStaqOpenQasm>(bufNamesToSize);
   InstructionIterator iter2(function);
-  while(iter2.hasNext()) {
+  while (iter2.hasNext()) {
     auto &next = *iter2.next();
     if (next.isEnabled()) {
-        next.accept(translate);
+      next.accept(translate);
     }
   }
 
   return translate->ss.str();
 }
+
+const std::string
+StaqCompiler::translate(std::shared_ptr<CompositeInstruction> program,
+                        const HeterogeneousMap &options) {
+  if (options.stringExists("lang-type")) {
+    auto langType = options.getString("lang-type");
+
+    // map xacc to staq program
+    std::map<std::string, int> bufNamesToSize;
+    InstructionIterator iter(program);
+    // First search buffer names and see if we have
+    while (iter.hasNext()) {
+      auto &next = *iter.next();
+      if (next.isEnabled()) {
+        for (int i = 0; i < next.nRequiredBits(); i++) {
+          auto bufName = next.getBufferName(i);
+          int size = next.bits()[i] + 1;
+          if (bufNamesToSize.count(bufName)) {
+            if (bufNamesToSize[bufName] < size) {
+              bufNamesToSize[bufName] = size;
+            }
+          } else {
+            bufNamesToSize.insert({bufName, size});
+          }
+        }
+      }
+    }
+    auto translate =
+        std::make_shared<internal_staq::XACCToStaqOpenQasm>(bufNamesToSize);
+    InstructionIterator iter2(program);
+    while (iter2.hasNext()) {
+      auto &next = *iter2.next();
+      if (next.isEnabled()) {
+        next.accept(translate);
+      }
+    }
+    // std::cout << "HELLO:\n" << translate->ss.str() << "\n";
+    using namespace staq;
+    auto prog = parser::parse_string(translate->ss.str());
+    transformations::desugar(*prog);
+    transformations::synthesize_oracles(*prog);
+
+    optimization::simplify(*prog);
+
+    std::stringstream ss;
+    if (langType == "cirq") {
+      staq::output::CirqOutputter outputter(ss);
+      outputter.run(*prog);
+    }
+
+    return ss.str();
+
+  } else {
+    return translate(program);
+  }
+}
+
 } // namespace xacc

quantum/plugins/staq/compiler/staq_compiler.hpp

@@ -5,7 +5,7 @@
  * and Eclipse Distribution License v1.0 which accompanies this
  * distribution. The Eclipse Public License is available at
  * http://www.eclipse.org/legal/epl-v10.html and the Eclipse Distribution
- *License is available at https://eclipse.org/org/documents/edl-v10.php
+ * License is available at https://eclipse.org/org/documents/edl-v10.php
  *
  * Contributors:
  *   Alexander J. McCaskey - initial API and implementation
@@ -18,6 +18,7 @@
 namespace xacc {
 
 class StaqCompiler : public xacc::Compiler {
+
 public:
   StaqCompiler();
 
@@ -29,6 +30,9 @@ public:
   const std::string
   translate(std::shared_ptr<CompositeInstruction> function) override;
 
+  const std::string translate(std::shared_ptr<CompositeInstruction> program,
+                              const HeterogeneousMap &options) override;
+
   const std::string name() const override { return "staq"; }
 
   const std::string description() const override { return ""; }

quantum/plugins/staq/compiler/tests/StaqCompilerTester.in.cpp

@@ -150,6 +150,24 @@ measure c -> result;
 //   std::cout << hello->toString() << "\n";
 }
 
+
+TEST(StaqCompilerTester, checkCirq) {
+  auto compiler = xacc::getCompiler("staq");
+  auto IR = compiler->compile(R"(
+                      qreg q[2];
+                      creg c[2];
+                      U(0,0,0) q[0];
+                      CX q[0],q[1];
+                      rx(3.3) q[0];
+                      measure q -> c;
+                      )");
+
+  auto hello = IR->getComposites()[0];
+  std::cout << "HELLO:\n" << hello->toString() << "\n";
+
+  auto c = compiler->translate(hello, {std::make_pair("lang-type", "cirq")});
+  std::cout << "CIRQ: " << c << "\n";
+}
 int main(int argc, char **argv) {
   xacc::Initialize(argc, argv);
   xacc::set_verbose(true);

xacc/compiler/Compiler.hpp

@@ -29,8 +29,14 @@ public:
   virtual std::shared_ptr<IR> compile(const std::string &src) = 0;
 
   virtual const std::string
-  translate(std::shared_ptr<CompositeInstruction> CompositeInstruction) = 0;
+  translate(std::shared_ptr<CompositeInstruction> program) = 0;
 
+  virtual const std::string
+  translate(std::shared_ptr<CompositeInstruction> program, const HeterogeneousMap& options) {
+    // default just call translate
+    return translate(program);
+  }
+  
   virtual const std::shared_ptr<CompositeInstruction>
   compile(std::shared_ptr<CompositeInstruction> f,
           std::shared_ptr<Accelerator> acc) {