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Expose try_table and throw_ref in C and JS API #9057

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159 changes: 159 additions & 0 deletions src/binaryen-c.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -226,6 +226,12 @@ BinaryenType BinaryenTypeNullExternref(void) {
BinaryenType BinaryenTypeNullFuncref(void) {
return Type(HeapType::nofunc, Nullable).getID();
}
BinaryenType BinaryenTypeExnref(void) {
return Type(HeapType::exn, Nullable).getID();
}
BinaryenType BinaryenTypeNullExnref(void) {
return Type(HeapType::noexn, Nullable).getID();
}
BinaryenType BinaryenTypeUnreachable(void) { return Type::unreachable; }
BinaryenType BinaryenTypeAuto(void) { return uintptr_t(-1); }

Expand Down Expand Up @@ -302,6 +308,12 @@ BinaryenHeapType BinaryenHeapTypeNoext() {
BinaryenHeapType BinaryenHeapTypeNofunc() {
return static_cast<BinaryenHeapType>(HeapType::BasicHeapType::nofunc);
}
BinaryenHeapType BinaryenHeapTypeExn() {
return static_cast<BinaryenHeapType>(HeapType::BasicHeapType::exn);
}
BinaryenHeapType BinaryenHeapTypeNoexn() {
return static_cast<BinaryenHeapType>(HeapType::BasicHeapType::noexn);
}

bool BinaryenHeapTypeIsBasic(BinaryenHeapType heapType) {
return HeapType(heapType).isBasic();
Expand Down Expand Up @@ -1780,6 +1792,28 @@ BinaryenExpressionRef BinaryenTry(BinaryenModuleRef module,
return static_cast<Expression*>(ret);
}

BinaryenExpressionRef BinaryenTryTable(BinaryenModuleRef module,
BinaryenExpressionRef body,
const char** catchTags,
const char** catchDests,
const bool* catchRefs,
BinaryenIndex numCatches) {
std::vector<Name> tags;
std::vector<Name> dests;
std::vector<bool> refs;
tags.reserve(numCatches);
dests.reserve(numCatches);
refs.reserve(numCatches);
for (BinaryenIndex i = 0; i < numCatches; i++) {
tags.push_back(catchTags[i] ? Name(catchTags[i]) : Name());
dests.push_back(catchDests[i]);
refs.push_back(catchRefs[i]);
}
return static_cast<Expression*>(
Builder(*(Module*)module)
.makeTryTable((Expression*)body, tags, dests, refs));
}

BinaryenExpressionRef BinaryenThrow(BinaryenModuleRef module,
const char* tag,
BinaryenExpressionRef* operands,
Expand All @@ -1798,6 +1832,12 @@ BinaryenExpressionRef BinaryenRethrow(BinaryenModuleRef module,
Builder(*(Module*)module).makeRethrow(target));
}

BinaryenExpressionRef BinaryenThrowRef(BinaryenModuleRef module,
BinaryenExpressionRef exnref) {
return static_cast<Expression*>(
Builder(*(Module*)module).makeThrowRef((Expression*)exnref));
}

BinaryenExpressionRef BinaryenRefI31(BinaryenModuleRef module,
BinaryenExpressionRef value) {
return static_cast<Expression*>(
Expand Down Expand Up @@ -4086,6 +4126,112 @@ bool BinaryenTryIsDelegate(BinaryenExpressionRef expr) {
assert(expression->is<Try>());
return static_cast<Try*>(expression)->isDelegate();
}
// TryTable
BinaryenExpressionRef BinaryenTryTableGetBody(BinaryenExpressionRef expr) {
auto* expression = (Expression*)expr;
assert(expression->is<TryTable>());
return static_cast<TryTable*>(expression)->body;
}
void BinaryenTryTableSetBody(BinaryenExpressionRef expr,
BinaryenExpressionRef bodyExpr) {
auto* expression = (Expression*)expr;
assert(expression->is<TryTable>());
assert(bodyExpr);
static_cast<TryTable*>(expression)->body = (Expression*)bodyExpr;
}
BinaryenIndex BinaryenTryTableGetNumCatches(BinaryenExpressionRef expr) {
auto* expression = (Expression*)expr;
assert(expression->is<TryTable>());
return static_cast<TryTable*>(expression)->catchTags.size();
}
const char* BinaryenTryTableGetCatchTagAt(BinaryenExpressionRef expr,
BinaryenIndex index) {
auto* expression = (Expression*)expr;
assert(expression->is<TryTable>());
assert(index < static_cast<TryTable*>(expression)->catchTags.size());
auto name = static_cast<TryTable*>(expression)->catchTags[index];
return name.is() ? name.str.data() : nullptr;
}
void BinaryenTryTableSetCatchTagAt(BinaryenExpressionRef expr,
BinaryenIndex index,
const char* catchTag) {
auto* expression = (Expression*)expr;
assert(expression->is<TryTable>());
assert(index < static_cast<TryTable*>(expression)->catchTags.size());
static_cast<TryTable*>(expression)->catchTags[index] =
catchTag ? Name(catchTag) : Name();

@kripken kripken Aug 28, 2026

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@aheejin do we need to call refinalize() here so that sentTypes is repopulated?

}
const char* BinaryenTryTableGetCatchDestAt(BinaryenExpressionRef expr,
BinaryenIndex index) {
auto* expression = (Expression*)expr;
assert(expression->is<TryTable>());
assert(index < static_cast<TryTable*>(expression)->catchDests.size());
return static_cast<TryTable*>(expression)->catchDests[index].str.data();
}
void BinaryenTryTableSetCatchDestAt(BinaryenExpressionRef expr,
BinaryenIndex index,
const char* catchDest) {
auto* expression = (Expression*)expr;
assert(expression->is<TryTable>());
assert(index < static_cast<TryTable*>(expression)->catchDests.size());
static_cast<TryTable*>(expression)->catchDests[index] = catchDest;
}
bool BinaryenTryTableIsCatchRefAt(BinaryenExpressionRef expr,
BinaryenIndex index) {
auto* expression = (Expression*)expr;
assert(expression->is<TryTable>());
assert(index < static_cast<TryTable*>(expression)->catchRefs.size());
return static_cast<TryTable*>(expression)->catchRefs[index];
}
void BinaryenTryTableSetCatchRefAt(BinaryenExpressionRef expr,
BinaryenIndex index,
bool catchRef) {
auto* expression = (Expression*)expr;
assert(expression->is<TryTable>());
assert(index < static_cast<TryTable*>(expression)->catchRefs.size());
static_cast<TryTable*>(expression)->catchRefs[index] = catchRef;
}
BinaryenIndex BinaryenTryTableAppendCatch(BinaryenExpressionRef expr,
const char* catchTag,
const char* catchDest,
bool catchRef) {
auto* expression = (Expression*)expr;
assert(expression->is<TryTable>());
assert(catchDest);
auto* tryTable = static_cast<TryTable*>(expression);
auto index = tryTable->catchTags.size();
tryTable->catchTags.push_back(catchTag ? Name(catchTag) : Name());
tryTable->catchDests.push_back(Name(catchDest));
tryTable->catchRefs.push_back(catchRef);
return index;
}
void BinaryenTryTableInsertCatchAt(BinaryenExpressionRef expr,
BinaryenIndex index,
const char* catchTag,
const char* catchDest,
bool catchRef) {
auto* expression = (Expression*)expr;
assert(expression->is<TryTable>());
assert(catchDest);
auto* tryTable = static_cast<TryTable*>(expression);
tryTable->catchTags.insertAt(index, catchTag ? Name(catchTag) : Name());
tryTable->catchDests.insertAt(index, Name(catchDest));
tryTable->catchRefs.insertAt(index, catchRef);
}
const char* BinaryenTryTableRemoveCatchAt(BinaryenExpressionRef expr,
BinaryenIndex index) {
auto* expression = (Expression*)expr;
assert(expression->is<TryTable>());
auto* tryTable = static_cast<TryTable*>(expression);
tryTable->catchTags.removeAt(index);
tryTable->catchRefs.removeAt(index);
return tryTable->catchDests.removeAt(index).str.data();
}
bool BinaryenTryTableHasCatchAll(BinaryenExpressionRef expr) {
auto* expression = (Expression*)expr;
assert(expression->is<TryTable>());
return static_cast<TryTable*>(expression)->hasCatchAll();
}
// Throw
const char* BinaryenThrowGetTag(BinaryenExpressionRef expr) {
auto* expression = (Expression*)expr;
Expand Down Expand Up @@ -4154,6 +4300,19 @@ void BinaryenRethrowSetTarget(BinaryenExpressionRef expr, const char* target) {
assert(expression->is<Rethrow>());
static_cast<Rethrow*>(expression)->target = target;
}
// ThrowRef
BinaryenExpressionRef BinaryenThrowRefGetExnref(BinaryenExpressionRef expr) {
auto* expression = (Expression*)expr;
assert(expression->is<ThrowRef>());
return static_cast<ThrowRef*>(expression)->exnref;
}
void BinaryenThrowRefSetExnref(BinaryenExpressionRef expr,
BinaryenExpressionRef exnrefExpr) {
auto* expression = (Expression*)expr;
assert(expression->is<ThrowRef>());
assert(exnrefExpr);
static_cast<ThrowRef*>(expression)->exnref = (Expression*)exnrefExpr;
}
// TupleMake
BinaryenIndex BinaryenTupleMakeGetNumOperands(BinaryenExpressionRef expr) {
auto* expression = (Expression*)expr;
Expand Down
84 changes: 84 additions & 0 deletions src/binaryen-c.h
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Original file line number Diff line number Diff line change
Expand Up @@ -112,6 +112,8 @@ BINARYEN_API BinaryenType BinaryenTypeStringref(void);
BINARYEN_API BinaryenType BinaryenTypeNullref(void);
BINARYEN_API BinaryenType BinaryenTypeNullExternref(void);
BINARYEN_API BinaryenType BinaryenTypeNullFuncref(void);
BINARYEN_API BinaryenType BinaryenTypeExnref(void);
BINARYEN_API BinaryenType BinaryenTypeNullExnref(void);
BINARYEN_API BinaryenType BinaryenTypeUnreachable(void);
// Not a real type. Used as the last parameter to BinaryenBlock to let
// the API figure out the type instead of providing one.
Expand Down Expand Up @@ -151,6 +153,8 @@ BINARYEN_API BinaryenHeapType BinaryenHeapTypeString(void);
BINARYEN_API BinaryenHeapType BinaryenHeapTypeNone(void);
BINARYEN_API BinaryenHeapType BinaryenHeapTypeNoext(void);
BINARYEN_API BinaryenHeapType BinaryenHeapTypeNofunc(void);
BINARYEN_API BinaryenHeapType BinaryenHeapTypeExn(void);
BINARYEN_API BinaryenHeapType BinaryenHeapTypeNoexn(void);

BINARYEN_API bool BinaryenHeapTypeIsBasic(BinaryenHeapType heapType);
BINARYEN_API bool BinaryenHeapTypeIsSignature(BinaryenHeapType heapType);
Expand Down Expand Up @@ -1037,6 +1041,14 @@ BinaryenTry(BinaryenModuleRef module,
BinaryenExpressionRef* catchBodies,
BinaryenIndex numCatchBodies,
const char* delegateTarget);
// TryTable: catch tag names may be NULL to denote catch_all or catch_all_ref.
// catchRefs[i] is true if the i-th catch is catch_ref or catch_all_ref.
BINARYEN_API BinaryenExpressionRef BinaryenTryTable(BinaryenModuleRef module,
BinaryenExpressionRef body,
const char** catchTags,
const char** catchDests,
const bool* catchRefs,
BinaryenIndex numCatches);
BINARYEN_API BinaryenExpressionRef
BinaryenThrow(BinaryenModuleRef module,
const char* tag,
Expand All @@ -1045,6 +1057,8 @@ BinaryenThrow(BinaryenModuleRef module,
BINARYEN_API BinaryenExpressionRef BinaryenRethrow(BinaryenModuleRef module,
const char* target);
BINARYEN_API BinaryenExpressionRef
BinaryenThrowRef(BinaryenModuleRef module, BinaryenExpressionRef exnref);
BINARYEN_API BinaryenExpressionRef
BinaryenTupleMake(BinaryenModuleRef module,
BinaryenExpressionRef* operands,
BinaryenIndex numOperands);
Expand Down Expand Up @@ -2362,6 +2376,67 @@ BINARYEN_API void BinaryenTrySetDelegateTarget(BinaryenExpressionRef expr,
// Gets whether a `try` expression is a try-delegate.
BINARYEN_API bool BinaryenTryIsDelegate(BinaryenExpressionRef expr);

// TryTable

// Gets the body expression of a `try_table` expression.
BINARYEN_API BinaryenExpressionRef
BinaryenTryTableGetBody(BinaryenExpressionRef expr);
// Sets the body expression of a `try_table` expression.
BINARYEN_API void BinaryenTryTableSetBody(BinaryenExpressionRef expr,
BinaryenExpressionRef bodyExpr);
// Gets the number of catch clauses of a `try_table` expression.
BINARYEN_API BinaryenIndex
BinaryenTryTableGetNumCatches(BinaryenExpressionRef expr);
// Gets the catch tag at the specified index of a `try_table` expression. Empty
// (NULL) for catch_all and catch_all_ref clauses.
BINARYEN_API const char*
BinaryenTryTableGetCatchTagAt(BinaryenExpressionRef expr, BinaryenIndex index);
// Sets the catch tag at the specified index of a `try_table` expression. Pass
// NULL for catch_all/catch_all_ref clauses.
BINARYEN_API void BinaryenTryTableSetCatchTagAt(BinaryenExpressionRef expr,
BinaryenIndex index,
const char* catchTag);
// Gets the catch destination label at the specified index of a `try_table`
// expression.
BINARYEN_API const char*
BinaryenTryTableGetCatchDestAt(BinaryenExpressionRef expr, BinaryenIndex index);
// Sets the catch destination label at the specified index of a `try_table`
// expression.
BINARYEN_API void BinaryenTryTableSetCatchDestAt(BinaryenExpressionRef expr,
BinaryenIndex index,
const char* catchDest);
// Gets whether the catch clause at the specified index of a `try_table`
// expression is a `catch_ref` or `catch_all_ref` clause (passes the exnref).
BINARYEN_API bool BinaryenTryTableIsCatchRefAt(BinaryenExpressionRef expr,
BinaryenIndex index);
// Sets whether the catch clause at the specified index of a `try_table`
// expression is a `catch_ref`/`catch_all_ref` clause.
BINARYEN_API void BinaryenTryTableSetCatchRefAt(BinaryenExpressionRef expr,
BinaryenIndex index,
bool catchRef);
// Appends a catch clause to a `try_table` expression, returning its insertion
// index. Pass NULL for `catchTag` for catch_all/catch_all_ref.
BINARYEN_API BinaryenIndex
BinaryenTryTableAppendCatch(BinaryenExpressionRef expr,
const char* catchTag,
const char* catchDest,
bool catchRef);
// Inserts a catch clause at the specified index of a `try_table` expression,
// moving existing clauses including the one previously at that index one
// index up.
BINARYEN_API void BinaryenTryTableInsertCatchAt(BinaryenExpressionRef expr,
BinaryenIndex index,
const char* catchTag,
const char* catchDest,
bool catchRef);
// Removes the catch clause at the specified index of a `try_table` expression,
// moving all subsequent clauses one index down. Returns the removed clause's
// destination label.
BINARYEN_API const char*
BinaryenTryTableRemoveCatchAt(BinaryenExpressionRef expr, BinaryenIndex index);
// Gets whether a `try_table` expression has a catch_all/catch_all_ref clause.
BINARYEN_API bool BinaryenTryTableHasCatchAll(BinaryenExpressionRef expr);

// Throw

// Gets the name of the tag being thrown by a `throw` expression.
Expand Down Expand Up @@ -2404,6 +2479,15 @@ BINARYEN_API const char* BinaryenRethrowGetTarget(BinaryenExpressionRef expr);
BINARYEN_API void BinaryenRethrowSetTarget(BinaryenExpressionRef expr,
const char* target);

// ThrowRef

// Gets the exnref operand of a `throw_ref` expression.
BINARYEN_API BinaryenExpressionRef
BinaryenThrowRefGetExnref(BinaryenExpressionRef expr);
// Sets the exnref operand of a `throw_ref` expression.
BINARYEN_API void BinaryenThrowRefSetExnref(BinaryenExpressionRef expr,
BinaryenExpressionRef exnrefExpr);

// TupleMake

// Gets the number of operands of a `tuple.make` expression.
Expand Down
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