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Add PRESERVE_NONE

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This commit is contained in:
Andrew Noyes
2025-05-12 23:15:46 -04:00
parent b22175e24d
commit 1197117258
1 changed files with 17 additions and 11 deletions
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28
src/test.cpp
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@@ -415,6 +415,12 @@ private:
#define MUSTTAIL #define MUSTTAIL
#endif #endif
#if __has_attribute(preserve_none)
#define PRESERVE_NONE __attribute__((preserve_none))
#else
#define PRESERVE_NONE
#endif
struct Parser2 { struct Parser2 {
Parser2(char *buf, int len, const Callbacks *callbacks, void *data) Parser2(char *buf, int len, const Callbacks *callbacks, void *data)
: buf(buf), len(len), callbacks(callbacks), data(data) {} : buf(buf), len(len), callbacks(callbacks), data(data) {}
@@ -489,7 +495,7 @@ private:
return true; return true;
} }
typedef bool (*continuation)(Parser2 *); typedef PRESERVE_NONE bool (*continuation)(Parser2 *);
void printStack() { void printStack() {
printf("token: %s\n", symbolNames[currentToken]); printf("token: %s\n", symbolNames[currentToken]);
@@ -499,7 +505,7 @@ private:
printf("\n"); printf("\n");
} }
static bool keepGoing(Parser2 *self) { PRESERVE_NONE static bool keepGoing(Parser2 *self) {
// self->printStack(); // self->printStack();
if (self->stack.empty()) { if (self->stack.empty()) {
assert(self->currentToken == T_EOF); assert(self->currentToken == T_EOF);
@@ -518,8 +524,8 @@ private:
self); self);
} }
static bool reject(Parser2 *) { return false; } PRESERVE_NONE static bool reject(Parser2 *) { return false; }
static bool object(Parser2 *self) { PRESERVE_NONE static bool object(Parser2 *self) {
assert(self->currentToken == T_LBRACE); assert(self->currentToken == T_LBRACE);
self->callbacks->on_begin_object(self->data); self->callbacks->on_begin_object(self->data);
self->nextToken(); self->nextToken();
@@ -530,7 +536,7 @@ private:
self->stack.push_back(T_STRING); self->stack.push_back(T_STRING);
MUSTTAIL return keepGoing(self); MUSTTAIL return keepGoing(self);
} }
static bool atom(Parser2 *self) { PRESERVE_NONE static bool atom(Parser2 *self) {
if (*self->bufBefore == 't') { if (*self->bufBefore == 't') {
self->callbacks->on_true_literal(self->data); self->callbacks->on_true_literal(self->data);
} else if (*self->bufBefore == 'f') { } else if (*self->bufBefore == 'f') {
@@ -547,13 +553,13 @@ private:
self->stack.pop_back(); self->stack.pop_back();
MUSTTAIL return keepGoing(self); MUSTTAIL return keepGoing(self);
} }
static bool string(Parser2 *self) { PRESERVE_NONE static bool string(Parser2 *self) {
assert(self->currentToken == T_STRING); assert(self->currentToken == T_STRING);
self->nextToken(); self->nextToken();
self->stack.pop_back(); self->stack.pop_back();
MUSTTAIL return keepGoing(self); MUSTTAIL return keepGoing(self);
} }
static bool array(Parser2 *self) { PRESERVE_NONE static bool array(Parser2 *self) {
assert(self->currentToken == T_LBRACKET); assert(self->currentToken == T_LBRACKET);
self->callbacks->on_begin_array(self->data); self->callbacks->on_begin_array(self->data);
self->nextToken(); self->nextToken();
@@ -562,7 +568,7 @@ private:
self->stack.push_back(N_VALUE); self->stack.push_back(N_VALUE);
MUSTTAIL return keepGoing(self); MUSTTAIL return keepGoing(self);
} }
static bool continueArray(Parser2 *self) { PRESERVE_NONE static bool continueArray(Parser2 *self) {
assert(self->currentToken == T_COMMA); assert(self->currentToken == T_COMMA);
self->nextToken(); self->nextToken();
self->stack.pop_back(); self->stack.pop_back();
@@ -570,7 +576,7 @@ private:
self->stack.push_back(N_VALUE); self->stack.push_back(N_VALUE);
MUSTTAIL return keepGoing(self); MUSTTAIL return keepGoing(self);
} }
static bool continueObject(Parser2 *self) { PRESERVE_NONE static bool continueObject(Parser2 *self) {
assert(self->currentToken == T_COMMA); assert(self->currentToken == T_COMMA);
self->nextToken(); self->nextToken();
self->stack.pop_back(); self->stack.pop_back();
@@ -580,14 +586,14 @@ private:
self->stack.push_back(T_STRING); self->stack.push_back(T_STRING);
MUSTTAIL return keepGoing(self); MUSTTAIL return keepGoing(self);
} }
static bool finishArray(Parser2 *self) { PRESERVE_NONE static bool finishArray(Parser2 *self) {
assert(self->currentToken == T_RBRACKET); assert(self->currentToken == T_RBRACKET);
self->callbacks->on_end_array(self->data); self->callbacks->on_end_array(self->data);
self->nextToken(); self->nextToken();
self->stack.pop_back(); self->stack.pop_back();
MUSTTAIL return keepGoing(self); MUSTTAIL return keepGoing(self);
} }
static bool finishObject(Parser2 *self) { PRESERVE_NONE static bool finishObject(Parser2 *self) {
assert(self->currentToken == T_RBRACE); assert(self->currentToken == T_RBRACE);
self->callbacks->on_end_object(self->data); self->callbacks->on_end_object(self->data);
self->nextToken(); self->nextToken();