Handle more testing stuff statically.

Remove fnt and just have centralized fn.
Longer printObj temp string.
`?` now shows tests.
Add more internal testing.

src/env.c

@@ -242,21 +242,22 @@ struct helpText {
     const char* symbol;
     const char* help;
     const char*const* tests;
+    size_t testCount;
 };
 int currentHelp = 0;
 struct helpText helpTexts[100];
 
-#define pf(_name, _func) buildFuncSym(_name, &(_func), _func ## Doc, NULL)
 #define pfn(_func) buildFuncSym(_func ## Symbol, &(_func), _func ## Doc, NULL)
-#define pft(_name, _func) buildFuncSym(_name, &(_func), _func ## Doc, _func ## Tests)
+#define pf(_name, _func) buildFuncSym(_name, &(_func), _func ## Doc, _func ## Tests, array_length(_func ## Tests))
 
 int helpInitialized = 0;
-struct symFunc buildFuncSym(const char* symbol, Object (* func)(Object, Object, struct Environment*), const char* help, const char*const* tests)
+struct symFunc buildFuncSym(const char* symbol, Object (* func)(Object, Object, struct Environment*), const char* help, const char*const* tests, size_t testLength)
 {
     if (!helpInitialized) {
         helpTexts[currentHelp].help = help;
         helpTexts[currentHelp].symbol = symbol;
         helpTexts[currentHelp].tests = tests;
+        helpTexts[currentHelp].testCount = testLength;
         currentHelp += 1;
     }
 
@@ -266,12 +267,20 @@ struct symFunc buildFuncSym(const char* symbol, Object (* func)(Object, Object,
     };
 }
 
-const char* getHelp(const char* symbol)
+char* getHelp(const char* symbol)
 {
     for (int i = 0; i < currentHelp; i++) {
         struct helpText h = helpTexts[i];
         if (strcmp(symbol, h.symbol) == 0) {
-            return h.help;
+            char* text = calloc(sizeof(char), 1024);
+            char* textCursor = text;
+            textCursor += sprintf(textCursor, "%s", h.help);
+            for (int ti = 0; ti < h.testCount; ti += 2) {
+                const char* test = h.tests[ti];
+                const char* expected = h.tests[ti + 1];
+                textCursor += sprintf(textCursor, "\n  %s => %s", test, expected);
+            }
+            return text;
         }
     }
     return "Help not found!";
@@ -293,9 +302,8 @@ int runTests()
     for (int hi = 0; hi < currentHelp; hi++) {
         struct helpText h = helpTexts[hi];
         if (h.tests) {
-            int ti = 0;
             char result[1024];
-            while (h.tests[ti]) {
+            for (int ti = 0; ti < h.testCount; ti += 2) {
                 const char* test = h.tests[ti];
                 const char* expected = h.tests[ti + 1];
                 struct Environment env = defaultEnv();
@@ -310,7 +318,6 @@ int runTests()
                 } else {
                     passCount++;
                 }
-                ti += 2;
             }
         }
     }
@@ -354,8 +361,8 @@ struct Environment defaultEnv()
         {"<", &lth},
         {"&", &and},
         {"|", &or},
-        pft("cat", catObjects),
-        pft("fil", filter),
+        pf("cat", catObjects),
+        pf("fil", filter),
         pf("len", len),
         pf("ap", append),
         pf("pre", prepend),
@@ -379,7 +386,8 @@ struct Environment defaultEnv()
         pf("serve", startServer),
 #endif
 #ifdef STANDALONE
-        pfn(segfault),
+        pf("seg", segfault),
+        //pfn(segfault),
         pf("prn", print),
         pf("pch", pChar),
         pf("penv", printEnvO),

src/env.h

@@ -43,7 +43,8 @@ struct StructDef getStructDef(struct Environment* env, const char* name);
 
 int getStructIndex(struct Environment* env, const char* name);
 
-const char* getHelp(const char* symbol);
+/// Needs to be freed!
+char* getHelp(const char* symbol);
 
 int runTests();
 

src/object.c

@@ -477,8 +477,8 @@ void _printObj(const Object* obj, int newline)
         printObj(&obj->lambda->body);
         return;
     }
-    char temp[200] = "";
-    stringObj(temp, obj);
+    char temp[1024] = "";
+    stringNObj(temp, obj, 1024);
     if (newline) {
         printf("%s\n", temp);
         if (obj->type == TYPE_ERROR) {

src/pebblisp.h

@@ -6,16 +6,20 @@
 #include "env.h"
 #include "object.h"
 
+#define static_assert _Static_assert
+
+#define array_length(_array) (sizeof(_array) / sizeof((_array)[0]))
+
 #define fn(_name, _docs, ...) static const char * const _name ## Doc = _docs; \
+static const char * const _name ## Tests[] = {__VA_ARGS__}; \
+static_assert(array_length(_name ## Tests) % 2 == 0, "Array of test strings must have exactly one expected result for each test."); \
 Object _name
 
-#define fnn(_name, _symbol, _docs)\
+#define fnn(_name, _symbol, _docs, ...)\
 static const char * const _name ## Doc = _docs;\
 static const char * const _name ## Symbol = _symbol;\
-Object _name
-
-#define fnt(_name, _docs, ...) static const char * const _name ## Doc = _docs;\
-  static const char * const _name ## Tests[] = {__VA_ARGS__, NULL}; \
+static const char * const _name ## Tests[] = {__VA_ARGS__}; \
+static_assert(array_length(_name ## Tests) % 2 == 0, "Array of test strings must have exactly one expected result for each test."); \
 Object _name
 
 struct Slice {

src/plfunc.c

@@ -233,8 +233,7 @@ Object basicOp(const Object* obj1, const Object* obj2, const char op,
     if (lists == 0) {
         return _basicOp(obj1, obj2, op, env);
 
-    } else if (lists ==
-               1) {    // Single operand is applied to each element in list
+    } else if (lists == 1) { // Single operand is applied to each element in list
         const Object* listObj = (obj1->type == TYPE_LIST) ? obj1 : obj2;
         const Object* singleObj = (obj1->type == TYPE_LIST) ? obj2 : obj1;
 
@@ -275,25 +274,25 @@ Object len(Object obj1, Object o_ignore, struct Environment* e_ignore)
         return basicOp(&obj1, &obj2, _char, env);                   \
     }
 
-BASIC_OP(add, '+');
+BASIC_OP(add, '+')
 
-BASIC_OP(sub, '-');
+BASIC_OP(sub, '-')
 
-BASIC_OP(mul, '*');
+BASIC_OP(mul, '*')
 
-BASIC_OP(dvi, '/');
+BASIC_OP(dvi, '/')
 
-BASIC_OP(mod, '%');
+BASIC_OP(mod, '%')
 
-BASIC_OP(equ, '=');
+BASIC_OP(equ, '=')
 
-BASIC_OP(gth, '>');
+BASIC_OP(gth, '>')
 
-BASIC_OP(lth, '<');
+BASIC_OP(lth, '<')
 
-BASIC_OP(and, '&');
+BASIC_OP(and, '&')
 
-BASIC_OP(or, '|');
+BASIC_OP(or, '|')
 
 #undef BASIC_OP
 
@@ -343,8 +342,10 @@ Object systemCall(Object process, Object _, struct Environment* env)
 
 Object help(Object symbol, Object ignore, struct Environment* ignore2)
 {
-    const char* help = getHelp(symbol.string);
-    return objFromSlice(&help[-1], strlen(help) + 2);
+    char* help = getHelp(symbol.string);
+    Object helpText = newObject(TYPE_STRING);
+    helpText.string = help;
+    return helpText;
 }
 
 #endif // STANDALONE

src/plfunc.h

@@ -28,29 +28,41 @@ BASIC_OP(or);
 
 #undef BASIC_OP
 
-fnt(catObjects,
-  "Concatenate string versions of the given objects.\n",
+fn(catObjects,
+  "Concatenate string versions of the given objects.",
   "(cat \"Stuff: \" (1 2 3))", "Stuff: ( 1 2 3 )"
 )(Object obj1, Object obj2, struct Environment* env);
 
-fnt(filter,
-  "Filter a list based on the given condition.\n",
+fn(filter,
+  "Filter a list based on the given condition.",
   "(fil (< 50) (25 60 100))", "( 60 100 )"
 )(Object condition, Object list, struct Environment* env);
 
 fn(append,
-  "Append the given element",
-  "(ap (1 2) 3)", "( 1 2 3 )")
-(Object list, Object newElement, struct Environment* env);
+  "Append the given element. Creates a new list.",
+  "(ap (1 2) 3)", "( 1 2 3 )"
+)(Object list, Object newElement, struct Environment* env);
 
-fn(prepend, "(pre (2 3) 1) => ( 1 2 3 )")
-(Object list, Object newElement, struct Environment* env);
+fn(prepend,
+  "Prepend the given element. Creates a new list",
+  "(pre (2 3) 1)", "( 1 2 3 )"
+)(Object list, Object newElement, struct Environment* env);
 
-fn(len, "(len (2 3)) => 2")
-(Object obj1, Object o_ignore, struct Environment* e_ignore);
+fn(len,
+  "Returns the length of the given list, or a NOT_A_LIST error if the expression is not a list.",
+  "(len (2 3))", "2",
+  "(len ())", "0",
+  "(len \"string\")", "NOT_A_LIST"
+)(Object obj1, Object o_ignore, struct Environment* e_ignore);
 
-fn(reduce, "(reduce ((1 2 3) 0) +) => 6")
-(Object listInitial, Object func, struct Environment* env);
+fn(reduce,
+  "Performs a simple reduction. Does not currently work with lambdas.\n"
+  "Takes two arguments:\n"
+  " - A two-element list: (`values` `initial`)\n"
+  " - A function to apply to each value.",
+  "(reduce (5 6) +)", "11",
+  "(reduce ((1 2 3) 0) +)", "6"
+)(Object listInitial, Object func, struct Environment* env);
 
 fn(at, "(at 1 (1 2 3)) => 2")
 (Object index, Object list, struct Environment* env);