small readfile() refactoring and cleanup

Author: firewave

test.cpp

@@ -78,24 +78,34 @@ static void testcase(const std::string &name, void (*f)(), int argc, char * cons
 #define TEST_CASE(F)    (testcase(#F, F, argc, argv))
 
 
-
-static std::string readfile(const char code[], int sz=-1, simplecpp::OutputList *outputList=nullptr)
+static simplecpp::TokenList makeTokenList(const char code[], std::vector<std::string> &filenames, const std::string &filename=std::string(), simplecpp::OutputList *outputList=nullptr)
 {
-    std::istringstream istr(sz == -1 ? std::string(code) : std::string(code,sz));
-    std::vector<std::string> files;
-    return simplecpp::TokenList(istr,files,std::string(),outputList).stringify();
+    std::istringstream istr(code);
+    return simplecpp::TokenList(istr,filenames,filename,outputList);
 }
 
-static simplecpp::TokenList makeTokenList(const char code[], std::vector<std::string> &filenames, const std::string &filename=std::string(), simplecpp::OutputList *outputList=nullptr)
+static simplecpp::TokenList makeTokenList(const char code[], std::size_t size, std::vector<std::string> &filenames, const std::string &filename=std::string(), simplecpp::OutputList *outputList=nullptr)
 {
-    std::istringstream istr(code);
+    std::istringstream istr(std::string(code, size));
     return simplecpp::TokenList(istr,filenames,filename,outputList);
 }
 
 static simplecpp::TokenList makeTokenList(const char code[])
 {
     std::vector<std::string> files;
-    return makeTokenList(code, files, std::string());
+    return makeTokenList(code, files);
+}
+
+static std::string readfile(const char code[], simplecpp::OutputList *outputList=nullptr)
+{
+    std::vector<std::string> files;
+    return makeTokenList(code,files,std::string(),outputList).stringify();
+}
+
+static std::string readfile(const char code[], std::size_t size, simplecpp::OutputList *outputList=nullptr)
+{
+    std::vector<std::string> files;
+    return makeTokenList(code,size,files,std::string(),outputList).stringify();
 }
 
 static std::string preprocess(const char code[], const simplecpp::DUI &dui, simplecpp::OutputList *outputList)
@@ -166,15 +176,15 @@ static void backslash()
     // <backslash><space><newline> preprocessed differently
     simplecpp::OutputList outputList;
 
-    readfile("//123 \\\n456", -1, &outputList);
+    readfile("//123 \\\n456", &outputList);
     ASSERT_EQUALS("", toString(outputList));
-    readfile("//123 \\ \n456", -1, &outputList);
+    readfile("//123 \\ \n456", &outputList);
     ASSERT_EQUALS("file0,1,portability_backslash,Combination 'backslash space newline' is not portable.\n", toString(outputList));
 
     outputList.clear();
-    readfile("#define A \\\n123", -1, &outputList);
+    readfile("#define A \\\n123", &outputList);
     ASSERT_EQUALS("", toString(outputList));
-    readfile("#define A \\ \n123", -1, &outputList);
+    readfile("#define A \\ \n123", &outputList);
     ASSERT_EQUALS("file0,1,portability_backslash,Combination 'backslash space newline' is not portable.\n", toString(outputList));
 }
 
@@ -811,26 +821,26 @@ static void error3()
 static void error4()
 {
     // "#error x\n1"
-    const std::string code("\xFE\xFF\x00\x23\x00\x65\x00\x72\x00\x72\x00\x6f\x00\x72\x00\x20\x00\x78\x00\x0a\x00\x31", 22);
-    std::istringstream istr(code);
+    const char code[] = "\xFE\xFF\x00\x23\x00\x65\x00\x72\x00\x72\x00\x6f\x00\x72\x00\x20\x00\x78\x00\x0a\x00\x31";
     std::vector<std::string> files;
     std::map<std::string, simplecpp::TokenList*> filedata;
     simplecpp::OutputList outputList;
     simplecpp::TokenList tokens2(files);
-    simplecpp::preprocess(tokens2, simplecpp::TokenList(istr,files,"test.c"), files, filedata, simplecpp::DUI(), &outputList);
+    const simplecpp::TokenList rawtoken = makeTokenList(code, sizeof(code),files,"test.c");
+    simplecpp::preprocess(tokens2, rawtoken, files, filedata, simplecpp::DUI(), &outputList);
     ASSERT_EQUALS("file0,1,#error,#error x\n", toString(outputList));
 }
 
 static void error5()
 {
     // "#error x\n1"
-    const std::string code("\xFF\xFE\x23\x00\x65\x00\x72\x00\x72\x00\x6f\x00\x72\x00\x20\x00\x78\x00\x0a\x00\x78\x00\x31\x00", 22);
-    std::istringstream istr(code);
+    const char code[] = "\xFF\xFE\x23\x00\x65\x00\x72\x00\x72\x00\x6f\x00\x72\x00\x20\x00\x78\x00\x0a\x00\x78\x00\x31\x00";
     std::vector<std::string> files;
     std::map<std::string, simplecpp::TokenList*> filedata;
     simplecpp::OutputList outputList;
     simplecpp::TokenList tokens2(files);
-    simplecpp::preprocess(tokens2, simplecpp::TokenList(istr,files,"test.c"), files, filedata, simplecpp::DUI(), &outputList);
+    const simplecpp::TokenList rawtokens = makeTokenList(code, sizeof(code),files,"test.c");
+    simplecpp::preprocess(tokens2, rawtokens, files, filedata, simplecpp::DUI(), &outputList);
     ASSERT_EQUALS("file0,1,#error,#error x\n", toString(outputList));
 }
 
@@ -1786,11 +1796,11 @@ static void readfile_char_error()
 {
     simplecpp::OutputList outputList;
 
-    readfile("A = L's", -1, &outputList);
+    readfile("A = L's", &outputList);
     ASSERT_EQUALS("file0,1,syntax_error,No pair for character (\'). Can't process file. File is either invalid or unicode, which is currently not supported.\n", toString(outputList));
     outputList.clear();
 
-    readfile("A = 's\n'", -1, &outputList);
+    readfile("A = 's\n'", &outputList);
     ASSERT_EQUALS("file0,1,syntax_error,No pair for character (\'). Can't process file. File is either invalid or unicode, which is currently not supported.\n", toString(outputList));
 }
 
@@ -1844,36 +1854,36 @@ static void readfile_string_error()
 {
     simplecpp::OutputList outputList;
 
-    readfile("A = \"abs", -1, &outputList);
+    readfile("A = \"abs", &outputList);
     ASSERT_EQUALS("file0,1,syntax_error,No pair for character (\"). Can't process file. File is either invalid or unicode, which is currently not supported.\n", toString(outputList));
     outputList.clear();
 
-    readfile("A = u8\"abs\n\"", -1, &outputList);
+    readfile("A = u8\"abs\n\"", &outputList);
     ASSERT_EQUALS("file0,1,syntax_error,No pair for character (\"). Can't process file. File is either invalid or unicode, which is currently not supported.\n", toString(outputList));
     outputList.clear();
 
-    readfile("A = R\"as\n(abc)as\"", -1, &outputList);
+    readfile("A = R\"as\n(abc)as\"", &outputList);
     ASSERT_EQUALS("file0,1,syntax_error,Invalid newline in raw string delimiter.\n", toString(outputList));
     outputList.clear();
 
-    readfile("A = u8R\"as\n(abc)as\"", -1, &outputList);
+   readfile("A = u8R\"as\n(abc)as\"", &outputList);
     ASSERT_EQUALS("file0,1,syntax_error,Invalid newline in raw string delimiter.\n", toString(outputList));
     outputList.clear();
 
-    readfile("A = R\"as(abc)a\"", -1, &outputList);
+    readfile("A = R\"as(abc)a\"", &outputList);
     ASSERT_EQUALS("file0,1,syntax_error,Raw string missing terminating delimiter.\n", toString(outputList));
     outputList.clear();
 
-    readfile("A = LR\"as(abc)a\"", -1, &outputList);
+    readfile("A = LR\"as(abc)a\"", &outputList);
     ASSERT_EQUALS("file0,1,syntax_error,Raw string missing terminating delimiter.\n", toString(outputList));
     outputList.clear();
 
-    readfile("#define A \"abs", -1, &outputList);
+    readfile("#define A \"abs", &outputList);
     ASSERT_EQUALS("file0,1,syntax_error,No pair for character (\"). Can't process file. File is either invalid or unicode, which is currently not supported.\n", toString(outputList));
     outputList.clear();
 
     // Don't warn for a multiline define
-    readfile("#define A \"abs\\\n\"", -1, &outputList);
+    readfile("#define A \"abs\\\n\"", &outputList);
     ASSERT_EQUALS("", toString(outputList));
 }
 
@@ -1885,11 +1895,11 @@ static void readfile_cpp14_number()
 static void readfile_unhandled_chars()
 {
     simplecpp::OutputList outputList;
-    readfile("// 你好世界", -1, &outputList);
+    readfile("// 你好世界", &outputList);
     ASSERT_EQUALS("", toString(outputList));
-    readfile("s=\"你好世界\"", -1, &outputList);
+    readfile("s=\"你好世界\"", &outputList);
     ASSERT_EQUALS("", toString(outputList));
-    readfile("int 你好世界=0;", -1, &outputList);
+    readfile("int 你好世界=0;", &outputList);
     ASSERT_EQUALS("file0,1,unhandled_char_error,The code contains unhandled character(s) (character code=228). Neither unicode nor extended ascii is supported.\n", toString(outputList));
 }
 
@@ -2034,13 +2044,34 @@ static void utf8()
 
 static void unicode()
 {
-    ASSERT_EQUALS("12", readfile("\xFE\xFF\x00\x31\x00\x32", 6));
-    ASSERT_EQUALS("12", readfile("\xFF\xFE\x31\x00\x32\x00", 6));
-    ASSERT_EQUALS("//\n1", readfile("\xFE\xFF\x00\x2f\x00\x2f\x00\x0a\x00\x31", 10));
-    ASSERT_EQUALS("//\n1", readfile("\xFF\xFE\x2f\x00\x2f\x00\x0a\x00\x31\x00", 10));
-    ASSERT_EQUALS("\"a\"", readfile("\xFE\xFF\x00\x22\x00\x61\x00\x22", 8));
-    ASSERT_EQUALS("\"a\"", readfile("\xFF\xFE\x22\x00\x61\x00\x22\x00", 8));
-    ASSERT_EQUALS("\n//1", readfile("\xff\xfe\x0d\x00\x0a\x00\x2f\x00\x2f\x00\x31\x00\x0d\x00\x0a\x00",16));
+    {
+        const char code[] = "\xFE\xFF\x00\x31\x00\x32";
+        ASSERT_EQUALS("12", readfile(code, sizeof(code)));
+    }
+    {
+        const char code[] = "\xFF\xFE\x31\x00\x32\x00";
+        ASSERT_EQUALS("12", readfile(code, sizeof(code)));
+    }
+    {
+        const char code[] = "\xFE\xFF\x00\x2f\x00\x2f\x00\x0a\x00\x31";
+        ASSERT_EQUALS("//\n1", readfile(code, sizeof(code)));
+    }
+    {
+        const char code[] = "\xFF\xFE\x2f\x00\x2f\x00\x0a\x00\x31\x00";
+        ASSERT_EQUALS("//\n1", readfile(code, sizeof(code)));
+    }
+    {
+        const char code[] = "\xFE\xFF\x00\x22\x00\x61\x00\x22";
+        ASSERT_EQUALS("\"a\"", readfile(code, sizeof(code)));
+    }
+    {
+        const char code[] = "\xFF\xFE\x22\x00\x61\x00\x22\x00";
+        ASSERT_EQUALS("\"a\"", readfile(code, sizeof(code)));
+    }
+    {
+        const char code[] = "\xff\xfe\x0d\x00\x0a\x00\x2f\x00\x2f\x00\x31\x00\x0d\x00\x0a\x00";
+        ASSERT_EQUALS("\n//1", readfile(code, sizeof(code)));
+    }
 }
 
 static void warning()