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Code Issues 1 Releases Wiki Activity

Add noreturn attribute to panic functions.

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This commit is contained in:
Calvin Rose 2019-05-31 10:10:20 -04:00
parent 26513a7a16
commit 2acc81d1c5
3 changed files with 16 additions and 14 deletions
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2
src/core/peg.c
View File

@ -447,7 +447,7 @@ static void builder_cleanup(Builder *b) {
janet_v_free(b->bytecode); janet_v_free(b->bytecode);
} }
static void peg_panic(Builder *b, const char *msg) { JANET_NO_RETURN static void peg_panic(Builder *b, const char *msg) {
builder_cleanup(b); builder_cleanup(b);
janet_panicf("grammar error in %p, %s", b->form, msg); janet_panicf("grammar error in %p, %s", b->form, msg);
} }

7
src/core/value.c
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@ -151,7 +151,6 @@ Janet janet_get(Janet ds, Janet key) {
switch (janet_type(ds)) { switch (janet_type(ds)) {
default: default:
janet_panicf("expected %T, got %v", JANET_TFLAG_LENGTHABLE, ds); janet_panicf("expected %T, got %v", JANET_TFLAG_LENGTHABLE, ds);
value = janet_wrap_nil();
break; break;
case JANET_STRUCT: case JANET_STRUCT:
value = janet_struct_get(janet_unwrap_struct(ds), key); value = janet_struct_get(janet_unwrap_struct(ds), key);
@ -219,7 +218,6 @@ Janet janet_get(Janet ds, Janet key) {
value = (type->get)(janet_unwrap_abstract(ds), key); value = (type->get)(janet_unwrap_abstract(ds), key);
} else { } else {
janet_panicf("no getter for %v ", ds); janet_panicf("no getter for %v ", ds);
value = janet_wrap_nil();
} }
break; break;
} }
@ -233,7 +231,6 @@ Janet janet_getindex(Janet ds, int32_t index) {
switch (janet_type(ds)) { switch (janet_type(ds)) {
default: default:
janet_panicf("expected %T, got %v", JANET_TFLAG_LENGTHABLE, ds); janet_panicf("expected %T, got %v", JANET_TFLAG_LENGTHABLE, ds);
value = janet_wrap_nil();
break; break;
case JANET_STRING: case JANET_STRING:
case JANET_SYMBOL: case JANET_SYMBOL:
@ -277,7 +274,6 @@ Janet janet_getindex(Janet ds, int32_t index) {
value = (type->get)(janet_unwrap_abstract(ds), janet_wrap_integer(index)); value = (type->get)(janet_unwrap_abstract(ds), janet_wrap_integer(index));
} else { } else {
janet_panicf("no getter for %v ", ds); janet_panicf("no getter for %v ", ds);
value = janet_wrap_nil();
} }
break; break;
} }
@ -289,7 +285,6 @@ int32_t janet_length(Janet x) {
switch (janet_type(x)) { switch (janet_type(x)) {
default: default:
janet_panicf("expected %T, got %v", JANET_TFLAG_LENGTHABLE, x); janet_panicf("expected %T, got %v", JANET_TFLAG_LENGTHABLE, x);
return 0;
case JANET_STRING: case JANET_STRING:
case JANET_SYMBOL: case JANET_SYMBOL:
case JANET_KEYWORD: case JANET_KEYWORD:
@ -312,7 +307,6 @@ void janet_putindex(Janet ds, int32_t index, Janet value) {
default: default:
janet_panicf("expected %T, got %v", janet_panicf("expected %T, got %v",
JANET_TFLAG_ARRAY | JANET_TFLAG_BUFFER | JANET_TFLAG_TABLE, ds); JANET_TFLAG_ARRAY | JANET_TFLAG_BUFFER | JANET_TFLAG_TABLE, ds);
break;
case JANET_ARRAY: { case JANET_ARRAY: {
JanetArray *array = janet_unwrap_array(ds); JanetArray *array = janet_unwrap_array(ds);
if (index >= array->count) { if (index >= array->count) {
@ -355,7 +349,6 @@ void janet_put(Janet ds, Janet key, Janet value) {
default: default:
janet_panicf("expected %T, got %v", janet_panicf("expected %T, got %v",
JANET_TFLAG_ARRAY | JANET_TFLAG_BUFFER | JANET_TFLAG_TABLE, ds); JANET_TFLAG_ARRAY | JANET_TFLAG_BUFFER | JANET_TFLAG_TABLE, ds);
break;
case JANET_ARRAY: { case JANET_ARRAY: {
int32_t index; int32_t index;
JanetArray *array = janet_unwrap_array(ds); JanetArray *array = janet_unwrap_array(ds);

21
src/include/janet.h
View File

@ -152,6 +152,15 @@ extern "C" {
#endif #endif
#endif #endif
/* Tell complier some functions don't return */
#ifndef JANET_NO_RETURN
#ifdef JANET_WINDOWS
#define JANET_NO_RETURN __declspec(noreturn)
#else
#define JANET_NO_RETURN __attribute__ ((noreturn))
#endif
#endif
/* Prevent some recursive functions from recursing too deeply /* Prevent some recursive functions from recursing too deeply
* ands crashing (the parser). Instead, error out. */ * ands crashing (the parser). Instead, error out. */
#define JANET_RECURSION_GUARD 1024 #define JANET_RECURSION_GUARD 1024
@ -1293,13 +1302,13 @@ JANET_API void janet_register(const char *name, JanetCFunction cfun);
} \ } \
JANET_API void _janet_init JANET_API void _janet_init
JANET_API void janet_panicv(Janet message); JANET_NO_RETURN JANET_API void janet_panicv(Janet message);
JANET_API void janet_panic(const char *message); JANET_NO_RETURN JANET_API void janet_panic(const char *message);
JANET_API void janet_panics(const uint8_t *message); JANET_NO_RETURN JANET_API void janet_panics(const uint8_t *message);
JANET_API void janet_panicf(const char *format, ...); JANET_NO_RETURN JANET_API void janet_panicf(const char *format, ...);
JANET_API void janet_printf(const char *format, ...); JANET_API void janet_printf(const char *format, ...);
JANET_API void janet_panic_type(Janet x, int32_t n, int expected); JANET_NO_RETURN JANET_API void janet_panic_type(Janet x, int32_t n, int expected);
JANET_API void janet_panic_abstract(Janet x, int32_t n, const JanetAbstractType *at); JANET_NO_RETURN JANET_API void janet_panic_abstract(Janet x, int32_t n, const JanetAbstractType *at);
JANET_API void janet_arity(int32_t arity, int32_t min, int32_t max); JANET_API void janet_arity(int32_t arity, int32_t min, int32_t max);
JANET_API void janet_fixarity(int32_t arity, int32_t fix); JANET_API void janet_fixarity(int32_t arity, int32_t fix);