ready to design g4

include/semantic/semantic.h

@@ -1,2 +1,5 @@
-#include<ios>
+#ifndef SEMANTIC_H
+#define SEMANTIC_H
+#include <ios>
 int SemanticCheck(std::istream &fin);
+#endif

include/semantic/visitor.h

@@ -0,0 +1,15 @@
+#ifndef VISITOR_H
+#define VISITOR_H
+#include "MXParserVisitor.h"
+class Visitor : public MXParserVisitor {
+ public:
+  virtual std::any visitMxprog(MXParser::MxprogContext *context);
+  virtual std::any visitFunction(MXParser::FunctionContext *context);
+  virtual std::any visitType(MXParser::TypeContext *context);
+  virtual std::any visitBlock(MXParser::BlockContext *context);
+  virtual std::any visitStatement(MXParser::StatementContext *context);
+  virtual std::any visitExpression(MXParser::ExpressionContext *context);
+  virtual std::any visitReturnStmt(MXParser::ReturnStmtContext *context);
+  virtual std::any visitIfStmt(MXParser::IfStmtContext *context);
+};
+#endif

src/semantic/CMakeLists.txt

@@ -1,5 +1,9 @@
 include_directories(/usr/include/antlr4-runtime/)
 include_directories(${CMAKE_SOURCE_DIR}/include/semantic)
+include_directories(${CMAKE_CURRENT_SOURCE_DIR}/antlr-generated)
+file(GLOB ANLTR_SOURCES "antlr-generated/*.cpp")
 file(GLOB SEMANTIC_SOURCES "*.cpp")
+add_library(mx-antlr STATIC ${ANLTR_SOURCES})
 add_library(semantic STATIC ${SEMANTIC_SOURCES})
-target_link_libraries(semantic PUBLIC antlr4-runtime)
+target_link_libraries(mx-antlr PUBLIC antlr4-runtime)
+target_link_libraries(semantic PUBLIC antlr4-runtime mx-antlr)

src/semantic/semantic.cpp

@@ -1,4 +1,17 @@
 #include "semantic.h"
+#include <iostream>
+#include "MXLexer.h"
+#include "MXParser.h"
+#include "antlr4-runtime.h"
+#include "visitor.h"
 int SemanticCheck(std::istream &fin) {
-  ;
+  antlr4::ANTLRInputStream input(fin);
+  MXLexer lexer(&input);
+  antlr4::CommonTokenStream tokens(&lexer);
+  tokens.fill();
+  MXParser parser(&tokens);
+  antlr4::tree::ParseTree *tree = parser.mxprog();
+  Visitor visitor;
+  visitor.visit(tree);
+  return 0;
 }

src/semantic/visitor.cpp

@@ -0,0 +1,41 @@
+#include "visitor.h"
+
+std::any Visitor::visitMxprog(MXParser::MxprogContext *context) {
+  // 空的函数体
+  return {};
+}
+
+std::any Visitor::visitFunction(MXParser::FunctionContext *context) {
+  // 空的函数体
+  return {};
+}
+
+std::any Visitor::visitType(MXParser::TypeContext *context) {
+  // 空的函数体
+  return {};
+}
+
+std::any Visitor::visitBlock(MXParser::BlockContext *context) {
+  // 空的函数体
+  return {};
+}
+
+std::any Visitor::visitStatement(MXParser::StatementContext *context) {
+  // 空的函数体
+  return {};
+}
+
+std::any Visitor::visitExpression(MXParser::ExpressionContext *context) {
+  // 空的函数体
+  return {};
+}
+
+std::any Visitor::visitReturnStmt(MXParser::ReturnStmtContext *context) {
+  // 空的函数体
+  return {};
+}
+
+std::any Visitor::visitIfStmt(MXParser::IfStmtContext *context) {
+  // 空的函数体
+  return {};
+}