{
if (safe_mode)
return "Safe mode enabled";
+ if (list_empty(&m->examples))
+ return "No examples to compile";
return NULL;
}
"", lib_list(m), file->compiled);
if (errmsg) {
talloc_free(file->compiled);
+ file->compiled = NULL;
return errmsg;
}
return NULL;
}
-struct score {
- unsigned int score;
- char *errors;
-};
-
-static char *start_main(char *ret)
+static char *start_main(char *ret, const char *why)
{
return talloc_asprintf_append(ret,
- "/* Fake function wrapper inserted */\n"
- "int main(int argc, char *argv[])\n"
- "{\n");
+ "/* The example %s, so fake function wrapper inserted */\n"
+ "int main(int argc, char *argv[])\n"
+ "{\n", why);
}
/* We only handle simple function definitions here. */
lines[i] += min_span;
}
-static bool looks_internal(char **lines)
+static bool looks_internal(char **lines, char **why)
{
unsigned int i;
bool last_ended = true; /* Did last line finish a statement? */
continue;
/* The winners. */
- if (strstarts(line, "if") && len == 2)
+ if (strstarts(line, "if") && len == 2) {
+ *why = "starts with if";
return true;
- if (strstarts(line, "for") && len == 3)
+ }
+ if (strstarts(line, "for") && len == 3) {
+ *why = "starts with for";
return true;
- if (strstarts(line, "while") && len == 5)
+ }
+ if (strstarts(line, "while") && len == 5) {
+ *why = "starts with while";
return true;
- if (strstarts(line, "do") && len == 2)
+ }
+ if (strstarts(line, "do") && len == 2) {
+ *why = "starts with do";
return true;
+ }
/* The losers. */
- if (strstarts(line, "#include"))
+ if (strstarts(line, "#include")) {
+ *why = "starts with #include";
return false;
+ }
if (last_ended && strchr(line, '(')) {
- if (strstarts(line, "static"))
+ if (strstarts(line, "static")) {
+ *why = "starts with static and contains (";
return false;
- if (strends(line, ")"))
+ }
+ if (strends(line, ")")) {
+ *why = "contains ( and ends with )";
return false;
+ }
}
/* Single identifier then operator == inside function. */
if (last_ended && len
- && ispunct(line[len+strspn(line+len, " ")]))
+ && ispunct(line[len+strspn(line+len, " ")])) {
+ *why = "starts with identifier then punctuation";
return true;
+ }
last_ended = (strends(line, "}")
|| strends(line, ";")
}
/* No idea... Say yes? */
+ *why = "gave no clues";
return true;
}
{
unsigned int i, lines_total, prev_total, count;
char **ret;
+ const char *reasoning;
+ char *why = NULL;
if (!prev)
return NULL;
/* If it looks internal, put prev at start. */
- if (looks_internal(lines)) {
+ if (looks_internal(lines, &why)) {
count = 0;
+ reasoning = "seemed to belong inside a function";
} else {
/* Try inserting in first elided position */
for (count = 0; lines[count]; count++) {
if (strcmp(lines[count], "...") == 0)
break;
}
- if (!lines[count])
+ if (!lines[count]) {
/* Try at start anyway? */
count = 0;
- else
+ reasoning = "didn't seem to belong inside"
+ " a function, so we prepended the previous"
+ " example";
+ } else {
+ reasoning = "didn't seem to belong inside"
+ " a function, so we put the previous example"
+ " at the first ...";
+
count++;
+ }
}
for (i = 0; lines[i]; i++);
for (i = 0; prev[i]; i++);
prev_total = i;
- ret = talloc_array(ctx, char *, lines_total + prev_total + 1);
- memcpy(ret, lines, count * sizeof(ret[0]));
- memcpy(ret + count, prev, prev_total * sizeof(ret[0]));
- memcpy(ret + count + prev_total, lines + count,
+ ret = talloc_array(ctx, char *, 1 +lines_total + prev_total + 1);
+ ret[0] = talloc_asprintf(ret, "/* The example %s, thus %s */\n",
+ why, reasoning);
+ memcpy(ret+1, lines, count * sizeof(ret[0]));
+ memcpy(ret+1 + count, prev, prev_total * sizeof(ret[0]));
+ memcpy(ret+1 + count + prev_total, lines + count,
(lines_total - count + 1) * sizeof(ret[0]));
return ret;
}
static char *mangle(struct manifest *m, char **lines)
{
- char *ret, *use_funcs = NULL;
+ char *ret, *use_funcs = NULL, *why;
bool in_function = false, fake_function = false, has_main = false;
unsigned int i;
"extern char somestring[];\n"
"char somestring[] = \"hello world\";\n");
- if (looks_internal(lines)) {
+ if (looks_internal(lines, &why)) {
/* Wrap it all in main(). */
- ret = start_main(ret);
+ ret = start_main(ret, why);
fake_function = true;
in_function = true;
has_main = true;
- }
+ } else
+ ret = talloc_asprintf_append(ret,
+ "/* The example %s, so didn't wrap in main() */\n",
+ why);
/* Primitive, very primitive. */
for (i = 0; lines[i]; i++) {
/* ... means elided code. */
if (strcmp(lines[i], "...") == 0) {
if (!in_function && !has_main
- && looks_internal(lines + i + 1)) {
+ && looks_internal(lines + i + 1, &why)) {
/* This implies we start a function here. */
- ret = start_main(ret);
+ ret = start_main(ret, why);
has_main = true;
fake_function = true;
in_function = true;
ret = talloc_asprintf_append(ret, "%s\n", lines[i]);
}
- /* Need a main to link successfully. */
if (!has_main) {
- ret = talloc_asprintf_append(ret, "int main(void)\n{\n");
+ ret = talloc_asprintf_append(ret,
+ "/* Need a main to link successfully. */\n"
+ "int main(void)\n{\n");
fake_function = true;
}
- /* Get rid of unused warnings by printing addresses of static funcs. */
if (use_funcs) {
+ ret = talloc_asprintf_append(ret,
+ "/* Get rid of unused warnings"
+ " by printing addresses of"
+ " static funcs. */");
if (!fake_function) {
ret = talloc_asprintf_append(ret,
"int use_funcs(void);\n"
}
close(fd);
f->contents = talloc_steal(f, contents);
+ list_add(&m->mangled_examples, &f->list);
return f;
}
-static void *build_examples(struct manifest *m, bool keep,
- unsigned int *timeleft)
+static void build_examples(struct manifest *m, bool keep,
+ unsigned int *timeleft, struct score *score)
{
struct ccan_file *i;
- struct score *score = talloc(m, struct score);
- struct ccan_file *mangle;
char **prev = NULL;
- score->score = 0;
- score->errors = NULL;
+ score->total = 0;
+ score->pass = true;
list_for_each(&m->examples, i, list) {
- char *ret;
+ char *ret, *ret1, *ret2 = NULL;
+ struct ccan_file *mangle1, *mangle2 = NULL;
+ char *err;
- examples_compile.total_score++;
+ score->total++;
/* Simplify our dumb parsing. */
strip_leading_whitespace(get_ccan_file_lines(i));
- ret = compile(score, m, i, keep);
+ ret = compile(i, m, i, keep);
if (!ret) {
prev = get_ccan_file_lines(i);
score->score++;
continue;
}
+ /* Try standalone. */
+ mangle1 = mangle_example(m, i, get_ccan_file_lines(i), keep);
+ ret1 = compile(i, m, mangle1, keep);
+ if (!ret1) {
+ prev = get_ccan_file_lines(i);
+ score->score++;
+ continue;
+ }
+
/* Try combining with previous (successful) example... */
if (prev) {
char **new = combine(i, get_ccan_file_lines(i), prev);
- talloc_free(ret);
- mangle = mangle_example(m, i, new, keep);
- ret = compile(score, m, mangle, keep);
- if (!ret) {
+ mangle2 = mangle_example(m, i, new, keep);
+ ret2 = compile(i, m, mangle2, keep);
+ if (!ret2) {
prev = new;
score->score++;
continue;
}
}
- /* Try standalone. */
- talloc_free(ret);
- mangle = mangle_example(m, i, get_ccan_file_lines(i), keep);
- ret = compile(score, m, mangle, keep);
- if (!ret) {
- prev = get_ccan_file_lines(i);
- score->score++;
- continue;
- }
-
- if (!score->errors)
- score->errors = ret;
- else {
- score->errors = talloc_append_string(score->errors,
- ret);
- talloc_free(ret);
+ score->pass = false;
+ score->error = "Compiling extracted examples failed";
+ if (!verbose) {
+ if (mangle2)
+ err = "Standalone, adding headers, "
+ "and including previous "
+ "example all failed";
+ else
+ err = "Standalone compile and"
+ " adding headers both failed";
+ } else {
+ err = talloc_asprintf(score,
+ "Standalone example:\n"
+ "%s\n"
+ "Errors: %s\n\n"
+ "Adding headers, wrappers:\n"
+ "%s\n"
+ "Errors: %s\n\n",
+ get_ccan_file_contents(i),
+ ret,
+ get_ccan_file_contents(mangle1),
+ ret1);
+
+ if (mangle2)
+ err = talloc_asprintf_append(err,
+ "Combining with previous example:\n"
+ "%s\n"
+ "Errors: %s\n\n",
+ get_ccan_file_contents(mangle2),
+ ret2);
}
+ score_file_error(score, i, 0, err);
/* This didn't work, so not a candidate for combining. */
prev = NULL;
}
- return score;
-}
-
-static unsigned int score_examples(struct manifest *m, void *check_result)
-{
- struct score *score = check_result;
- return score->score;
-}
-
-static const char *describe(struct manifest *m, void *check_result)
-{
- struct score *score = check_result;
- if (verbose >= 2 && score->errors)
- return talloc_asprintf(m, "Compile errors building examples:\n"
- "%s", score->errors);
- return NULL;
}
struct ccanlint examples_compile = {
.key = "examples-compile",
.name = "Module examples compile",
- .score = score_examples,
.check = build_examples,
- .describe = describe,
.can_run = can_run,
};
projects / ccan / blobdiff