Fixed ANTLRInputStream and ANTLRFileStream

runtime-testsuite/test/org/antlr/v4/test/runtime/cpp/BaseCppTest.java

@@ -394,7 +394,8 @@ protected void writeParserTestFile(String parserName, String lexerName,
 				+ "\n"
 				+ "\n"
 				+ "int main(int argc, const char* argv[]) {\n"
-				+ "  ANTLRFileStream input(argv[1]);\n"
+				+ "  ANTLRFileStream input;\n"
+				+ "  input.loadFromFile(argv[1]);\n"
 				+ "  <lexerName> lexer(&input);\n"
 				+ "  CommonTokenStream tokens(&lexer);\n"
 				+ "<createParser>"
@@ -436,7 +437,8 @@ protected void writeLexerTestFile(String lexerName, boolean showDFA) {
 				+ "using namespace antlr4;\n"
 				+ "\n"
 				+ "int main(int argc, const char* argv[]) {\n"
-				+ "  ANTLRFileStream input(argv[1]);\n"
+				+ "  ANTLRFileStream input;\n"
+				+ "  input.loadFromFile(argv[1]);\n"
 				+ "  <lexerName> lexer(&input);\n"
 				+ "  CommonTokenStream tokens(&lexer);\n"
 				+ "  tokens.fill();\n"

runtime/Cpp/runtime/antlrcpp.xcodeproj/project.pbxproj

@@ -3,7 +3,7 @@
 	archiveVersion = 1;
 	classes = {
 	};
-	objectVersion = 46;
+	objectVersion = 54;
 	objects = {
 
 /* Begin PBXBuildFile section */
@@ -2226,7 +2226,7 @@
 		37D727A21867AF1E007B6D10 /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1030;
+				LastUpgradeCheck = 1240;
 				ORGANIZATIONNAME = ANTLR;
 				TargetAttributes = {
 					270C67EF1CDB4F1E00116E17 = {
@@ -2238,7 +2238,7 @@
 				};
 			};
 			buildConfigurationList = 37D727A51867AF1E007B6D10 /* Build configuration list for PBXProject "antlrcpp" */;
-			compatibilityVersion = "Xcode 3.2";
+			compatibilityVersion = "Xcode 12.0";
 			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
@@ -2751,8 +2751,12 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				INFOPLIST_FILE = "antlrcpp-ios/Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 9.3;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@loader_path/Frameworks",
+				);
 				MTL_ENABLE_DEBUG_INFO = YES;
 				PRODUCT_BUNDLE_IDENTIFIER = "org.antlr.v4.runtime.antlrcpp-ios";
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -2782,8 +2786,12 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				INFOPLIST_FILE = "antlrcpp-ios/Info.plist";
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 9.3;
-				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
+				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+					"@loader_path/Frameworks",
+				);
 				MTL_ENABLE_DEBUG_INFO = NO;
 				PRODUCT_BUNDLE_IDENTIFIER = "org.antlr.v4.runtime.antlrcpp-ios";
 				PRODUCT_NAME = "$(TARGET_NAME)";
@@ -2841,8 +2849,7 @@
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
 				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
-				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
-				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++17";
 				CLANG_ENABLE_OBJC_ARC = YES;
 				CLANG_WARN_ASSIGN_ENUM = YES;
 				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
@@ -2857,6 +2864,7 @@
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_IMPLICIT_CONVERSION = YES;
@@ -2889,8 +2897,12 @@
 				GCC_WARN_UNUSED_LABEL = YES;
 				GCC_WARN_UNUSED_PARAMETER = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				HEADER_SEARCH_PATHS = "src/ thirdparty/utfcpp/source/ thirdparty/utfcpp/source/utf8/";
-				MACOSX_DEPLOYMENT_TARGET = 10.9;
+				HEADER_SEARCH_PATHS = (
+					src/,
+					thirdparty/utfcpp/source/,
+					thirdparty/utfcpp/source/utf8/,
+				);
+				MACOSX_DEPLOYMENT_TARGET = 11.1;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = macosx;
 			};
@@ -2901,8 +2913,7 @@
 			buildSettings = {
 				ALWAYS_SEARCH_USER_PATHS = NO;
 				CLANG_ANALYZER_LOCALIZABILITY_NONLOCALIZED = YES;
-				CLANG_CXX_LANGUAGE_STANDARD = "c++0x";
-				CLANG_CXX_LIBRARY = "libc++";
+				CLANG_CXX_LANGUAGE_STANDARD = "c++17";
 				CLANG_ENABLE_OBJC_ARC = YES;
 				CLANG_WARN_ASSIGN_ENUM = YES;
 				CLANG_WARN_BLOCK_CAPTURE_AUTORELEASING = YES;
@@ -2917,6 +2928,7 @@
 				CLANG_WARN_INT_CONVERSION = YES;
 				CLANG_WARN_OBJC_IMPLICIT_RETAIN_SELF = YES;
 				CLANG_WARN_OBJC_ROOT_CLASS = YES_ERROR;
+				CLANG_WARN_QUOTED_INCLUDE_IN_FRAMEWORK_HEADER = YES;
 				CLANG_WARN_RANGE_LOOP_ANALYSIS = YES;
 				CLANG_WARN_STRICT_PROTOTYPES = YES;
 				CLANG_WARN_SUSPICIOUS_IMPLICIT_CONVERSION = YES;
@@ -2945,8 +2957,12 @@
 				GCC_WARN_UNUSED_LABEL = YES;
 				GCC_WARN_UNUSED_PARAMETER = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				HEADER_SEARCH_PATHS = "src/ thirdparty/utfcpp/source/ thirdparty/utfcpp/source/utf8/";
-				MACOSX_DEPLOYMENT_TARGET = 10.9;
+				HEADER_SEARCH_PATHS = (
+					src/,
+					thirdparty/utfcpp/source/,
+					thirdparty/utfcpp/source/utf8/,
+				);
+				MACOSX_DEPLOYMENT_TARGET = 11.1;
 				SDKROOT = macosx;
 			};
 			name = Release;

runtime/Cpp/runtime/antlrcpp.xcodeproj/xcshareddata/xcschemes/antlr4.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1030"
+   LastUpgradeVersion = "1240"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

runtime/Cpp/runtime/antlrcpp.xcodeproj/xcshareddata/xcschemes/antlr4_ios.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1030"
+   LastUpgradeVersion = "1240"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -29,8 +29,6 @@
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
       </Testables>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -51,8 +49,6 @@
             ReferencedContainer = "container:antlrcpp.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"

runtime/Cpp/runtime/antlrcpp.xcodeproj/xcshareddata/xcschemes/antlr4_static.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1030"
+   LastUpgradeVersion = "1240"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"
@@ -29,8 +29,6 @@
       shouldUseLaunchSchemeArgsEnv = "YES">
       <Testables>
       </Testables>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </TestAction>
    <LaunchAction
       buildConfiguration = "Debug"
@@ -51,8 +49,6 @@
             ReferencedContainer = "container:antlrcpp.xcodeproj">
          </BuildableReference>
       </MacroExpansion>
-      <AdditionalOptions>
-      </AdditionalOptions>
    </LaunchAction>
    <ProfileAction
       buildConfiguration = "Release"

runtime/Cpp/runtime/src/ANTLRFileStream.cpp

@@ -1,4 +1,4 @@
-/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
+/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
  * Use of this file is governed by the BSD 3-clause license that
  * can be found in the LICENSE.txt file in the project root.
  */
@@ -9,11 +9,6 @@
 
 using namespace antlr4;
 
-ANTLRFileStream::ANTLRFileStream(const std::string &fileName) {
-  _fileName = fileName;
-  loadFromFile(fileName);
-}
-
 void ANTLRFileStream::loadFromFile(const std::string &fileName) {
   _fileName = fileName;
   if (_fileName.empty()) {

runtime/Cpp/runtime/src/ANTLRFileStream.h

@@ -1,4 +1,4 @@
-/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
+/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
  * Use of this file is governed by the BSD 3-clause license that
  * can be found in the LICENSE.txt file in the project root.
  */
@@ -13,15 +13,17 @@ namespace antlr4 {
   /// when you construct the object (or call load()).
   // TODO: this class needs testing.
   class ANTLR4CPP_PUBLIC ANTLRFileStream : public ANTLRInputStream {
-  protected:
-    std::string _fileName; // UTF-8 encoded file name.
-
   public:
-    // Assumes a file name encoded in UTF-8 and file content in the same encoding (with or w/o BOM).
-    ANTLRFileStream(const std::string &fileName);
+    ANTLRFileStream(const std::string &) = delete;
+    ANTLRFileStream(const char *data, size_t length) = delete;
+    ANTLRFileStream(std::istream &stream) = delete;
 
+    // Assumes a file name encoded in UTF-8 and file content in the same encoding (with or w/o BOM).
     virtual void loadFromFile(const std::string &fileName);
     virtual std::string getSourceName() const override;
+
+  private:
+    std::string _fileName; // UTF-8 encoded file name.
   };
 
 } // namespace antlr4

runtime/Cpp/runtime/src/ANTLRInputStream.cpp

@@ -1,4 +1,4 @@
-/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
+/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
  * Use of this file is governed by the BSD 3-clause license that
  * can be found in the LICENSE.txt file in the project root.
  */
@@ -17,44 +17,41 @@ using namespace antlrcpp;
 
 using misc::Interval;
 
+ANTLRInputStream::ANTLRInputStream() {
+  InitializeInstanceFields();
+}
+
 #if __cplusplus >= 201703L
-ANTLRInputStream::ANTLRInputStream(std::string_view input) {
-#else
-ANTLRInputStream::ANTLRInputStream(const std::string &input) {
+ANTLRInputStream::ANTLRInputStream(const std::string_view &input): ANTLRInputStream() {
+  load(input.data(), input.length());
+}
 #endif
-  InitializeInstanceFields();
-  load(input);
+
+ANTLRInputStream::ANTLRInputStream(const std::string &input): ANTLRInputStream() {
+  load(input.data(), input.size());
 }
 
-ANTLRInputStream::ANTLRInputStream(const char data_[], size_t numberOfActualCharsInArray)
-  : ANTLRInputStream(std::string(data_, numberOfActualCharsInArray)) {
+ANTLRInputStream::ANTLRInputStream(const char *data, size_t length) {
+  load(data, length);
 }
 
-ANTLRInputStream::ANTLRInputStream(std::istream &stream) {
-  InitializeInstanceFields();
+ANTLRInputStream::ANTLRInputStream(std::istream &stream): ANTLRInputStream() {
   load(stream);
 }
 
-#if __cplusplus >= 201703L
-void ANTLRInputStream::load(std::string_view input) {
-  // Remove the UTF-8 BOM if present.
-  constexpr std::string_view bom = "\xef\xbb\xbf";
-  if (input.compare(0, 3, bom) == 0)
-    input.remove_prefix(3);
-  _data = antlrcpp::utf8_to_utf32(input.data(), input.data() + input.size());
-  p = 0;
-}
-#else
 void ANTLRInputStream::load(const std::string &input) {
+  load(input.data(), input.size());
+}
+
+void ANTLRInputStream::load(const char *data, size_t length) {
   // Remove the UTF-8 BOM if present.
   const char bom[4] = "\xef\xbb\xbf";
-  if (input.compare(0, 3, bom, 3) == 0)
-    _data = antlrcpp::utf8_to_utf32(input.data() + 3, input.data() + input.size());
+  if (strncmp(data, bom, 3) == 0)
+    _data = antlrcpp::utf8_to_utf32(data + 3, data + length);
   else
-    _data = antlrcpp::utf8_to_utf32(input.data(), input.data() + input.size());
+    _data = antlrcpp::utf8_to_utf32(data, data + length);
   p = 0;
 }
-#endif
 
 void ANTLRInputStream::load(std::istream &stream) {
   if (!stream.good() || stream.eof()) // No fail, bad or EOF.
@@ -63,7 +60,7 @@ void ANTLRInputStream::load(std::istream &stream) {
   _data.clear();
 
   std::string s((std::istreambuf_iterator<char>(stream)), std::istreambuf_iterator<char>());
-  load(s);
+  load(s.data(), s.length());
 }
 
 void ANTLRInputStream::reset() {

runtime/Cpp/runtime/src/ANTLRInputStream.h

@@ -1,4 +1,4 @@
-/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
+/* Copyright (c) 2012-2017 The ANTLR Project. All rights reserved.
  * Use of this file is governed by the BSD 3-clause license that
  * can be found in the LICENSE.txt file in the project root.
  */
@@ -25,19 +25,18 @@ namespace antlr4 {
     /// What is name or source of this char stream?
     std::string name;
 
+    ANTLRInputStream();
+
 #if __cplusplus >= 201703L
-    ANTLRInputStream(std::string_view input = "");
-#else
-    ANTLRInputStream(const std::string &input = "");
+    ANTLRInputStream(const std::string_view &input);
 #endif
-    ANTLRInputStream(const char data_[], size_t numberOfActualCharsInArray);
+
+    ANTLRInputStream(const std::string &input);
+    ANTLRInputStream(const char *data, size_t length);
     ANTLRInputStream(std::istream &stream);
 
-#if __cplusplus >= 201703L
-    virtual void load(std::string_view input);
-#else
     virtual void load(const std::string &input);
-#endif
+    virtual void load(const char *data, size_t length);
     virtual void load(std::istream &stream);
 
     /// Reset the stream so that it's in the same state it was

runtime/Cpp/runtime/src/atn/ParserATNSimulator.cpp

@@ -1348,7 +1348,9 @@ Parser* ParserATNSimulator::getParser() {
   return parser;
 }
 
-#pragma warning (disable:4996) // 'getenv': This function or variable may be unsafe. Consider using _dupenv_s instead. 
+#ifdef _MSC_VER
+#pragma warning (disable:4996) // 'getenv': This function or variable may be unsafe. Consider using _dupenv_s instead.
+#endif
 
 bool ParserATNSimulator::getLrLoopSetting() {
   char *var = std::getenv("TURN_OFF_LR_LOOP_ENTRY_BRANCH_OPT");
@@ -1358,7 +1360,9 @@ bool ParserATNSimulator::getLrLoopSetting() {
   return value == "true" || value == "1";
 }
 
+#ifdef _MSC_VER
 #pragma warning (default:4996)
+#endif
 
 void ParserATNSimulator::InitializeInstanceFields() {
   _mode = PredictionMode::LL;