refs #1059 - extract configurations for #if x < y and #if x > y [skip ci]

Author: firewave

lib/preprocessor.cpp

@@ -415,6 +415,17 @@ static std::string readcondition(const simplecpp::Token *iftok, const std::set<s
             return cond->str() + '=' + cond->next->next->str();
     }
 
+    if (len == 3 && cond->name && (next1->op == '<' || next1->op == '>') && next2->number) {
+        if (defined.find(cond->str()) == defined.end()) {
+            int v = strToInt<int>(cond->next->next->str());
+            if (next1->op == '<')
+                v -= 1;
+            else
+                v += 1;
+            return cond->str() + '=' + std::to_string(v);
+        }
+    }
+
     std::set<std::string> configset;
     for (; sameline(iftok,cond); cond = cond->next) {
         if (cond->op == '!') {

test/testpreprocessor.cpp

@@ -318,6 +318,8 @@ class TestPreprocessor : public TestFixture {
         TEST_CASE(getConfigs13); // #14222
         TEST_CASE(getConfigs14); // #1059
         TEST_CASE(getConfigs15); // #1059
+        TEST_CASE(getConfigs16); // #1059
+        TEST_CASE(getConfigs17); // #1059
         TEST_CASE(getConfigsError);
 
         TEST_CASE(getConfigsD1);
@@ -654,7 +656,7 @@ class TestPreprocessor : public TestFixture {
                                 "#else\n"
                                 "    B\n"
                                 "#endif\n";
-        TODO_ASSERT_EQUALS("\nLIBVER=101\n", "\n", getConfigsStr(filedata));
+        ASSERT_EQUALS("\nLIBVER=101\n", getConfigsStr(filedata));
     }
 
     void if_cond2() {
@@ -2305,6 +2307,20 @@ class TestPreprocessor : public TestFixture {
         ASSERT_EQUALS("\nA=1\n", getConfigsStr(filedata));
     }
 
+    void getConfigs16() { // #1059
+        const char filedata[] = "#if A > 1\n"
+                                "1\n"
+                                "#endif\n";
+        ASSERT_EQUALS("\nA=2\n", getConfigsStr(filedata));
+    }
+
+    void getConfigs17() { // #1059
+        const char filedata[] = "#if A < 1\n"
+                                "1\n"
+                                "#endif\n";
+        ASSERT_EQUALS("\nA=0\n", getConfigsStr(filedata));
+    }
+
     void getConfigsError() {
         const char filedata1[] = "#ifndef X\n"
                                  "#error \"!X\"\n"