[NewIR] Add parser to deserialize

paddle/ir/core/parser/ir_parser.cc

@@ -343,4 +343,9 @@ Type Type::Parse(std::istream& is, IrContext* ctx) {
   return parser.ParseType();
 }
 
+std::unique_ptr<Program> Program::Parse(std::istream& is, IrContext* ctx) {
+  IrParser parser(ctx, is);
+  return parser.ParseProgram();
+}
+
 }  // namespace ir

paddle/ir/core/program.h

@@ -52,6 +52,8 @@ class IR_API Program {
 
   void Print(std::ostream& os) const;
 
+  static std::unique_ptr<Program> Parse(std::istream& is, IrContext* ctx);
+
   Block* block() { return module_.block(); }
   const Block* block() const { return module_op().block(); }
 

test/cpp/ir/core/ir_parser_test.cc

@@ -12,11 +12,11 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-#include <gtest/gtest.h>
-
 #include <fstream>
 #include <iostream>
 
+#include "gtest/gtest.h"
+
 #include "paddle/fluid/framework/framework.pb.h"
 #include "paddle/fluid/framework/operator.h"
 #include "paddle/fluid/framework/program_desc.h"
@@ -109,10 +109,8 @@ bool ParserTest::ConsumeTestTask(TestTask* test_task, ir::IrContext* ctx) {
     auto attr = ir::Attribute::Parse(is_par, ctx);
     attr.Print(os);
   } else if (test_type == ProgramTest) {
-    parser.reset(new ir::IrParser(ctx, is_par));
-    printer.reset(new ir::IrPrinter(os));
-    auto program = parser->ParseProgram();
-    printer->PrintProgram(program.get());
+    auto program = ir::Program::Parse(is_par, ctx);
+    program->Print(os);
   } else if (test_type == TypeTest) {
     auto type = ir::Type::Parse(is_par, ctx);
     type.Print(os);

test/cpp/ir/core/program_translator_test.cc

@@ -120,11 +120,10 @@ TEST(IrParserTest, MainProgram) {
 
   std::stringstream ss;
   program->Print(ss);
-  ir::IrParser *parser = new ir::IrParser(ctx, ss);
-  std::unique_ptr<ir::Program> parser_program = parser->ParseProgram();
+  std::unique_ptr<ir::Program> parser_program = ir::Program::Parse(ss, ctx);
   std::stringstream ssp;
-  parser_program->Print(ssp);
-  delete parser;
+  program->Print(ssp);
+
   EXPECT_TRUE(ssp.str() == ss.str());
 }
 
@@ -138,10 +137,9 @@ TEST(IrParserTest, StartupProgram) {
 
   std::stringstream ss;
   program->Print(ss);
-  ir::IrParser *parser = new ir::IrParser(ctx, ss);
-  std::unique_ptr<ir::Program> parser_program = parser->ParseProgram();
+  std::unique_ptr<ir::Program> parser_program = ir::Program::Parse(ss, ctx);
   std::stringstream ssp;
-  parser_program->Print(ssp);
-  delete parser;
+  program->Print(ssp);
+
   EXPECT_TRUE(ssp.str() == ss.str());
 }