github.com/bananabytelabs/wazero@v0.0.0-20240105073314-54b22a776da8/internal/wasmruntime/errors.go (about)

     1  // Package wasmruntime contains internal symbols shared between modules for error handling.
     2  // Note: This is named wasmruntime to avoid conflicts with the normal go module.
     3  // Note: This only imports "api" as importing "wasm" would create a cyclic dependency.
     4  package wasmruntime
     5  
     6  var (
     7  	// ErrRuntimeStackOverflow indicates that there are too many function calls,
     8  	// and the Engine terminated the execution.
     9  	ErrRuntimeStackOverflow = New("stack overflow")
    10  	// ErrRuntimeInvalidConversionToInteger indicates the Wasm function tries to
    11  	// convert NaN floating point value to integers during trunc variant instructions.
    12  	ErrRuntimeInvalidConversionToInteger = New("invalid conversion to integer")
    13  	// ErrRuntimeIntegerOverflow indicates that an integer arithmetic resulted in
    14  	// overflow value. For example, when the program tried to truncate a float value
    15  	// which doesn't fit in the range of target integer.
    16  	ErrRuntimeIntegerOverflow = New("integer overflow")
    17  	// ErrRuntimeIntegerDivideByZero indicates that an integer div or rem instructions
    18  	// was executed with 0 as the divisor.
    19  	ErrRuntimeIntegerDivideByZero = New("integer divide by zero")
    20  	// ErrRuntimeUnreachable means "unreachable" instruction was executed by the program.
    21  	ErrRuntimeUnreachable = New("unreachable")
    22  	// ErrRuntimeOutOfBoundsMemoryAccess indicates that the program tried to access the
    23  	// region beyond the linear memory.
    24  	ErrRuntimeOutOfBoundsMemoryAccess = New("out of bounds memory access")
    25  	// ErrRuntimeInvalidTableAccess means either offset to the table was out of bounds of table, or
    26  	// the target element in the table was uninitialized during call_indirect instruction.
    27  	ErrRuntimeInvalidTableAccess = New("invalid table access")
    28  	// ErrRuntimeIndirectCallTypeMismatch indicates that the type check failed during call_indirect.
    29  	ErrRuntimeIndirectCallTypeMismatch = New("indirect call type mismatch")
    30  )
    31  
    32  // Error is returned by a wasm.Engine during the execution of Wasm functions, and they indicate that the Wasm runtime
    33  // state is unrecoverable.
    34  type Error struct {
    35  	s string
    36  }
    37  
    38  func New(text string) *Error {
    39  	return &Error{s: text}
    40  }
    41  
    42  func (e *Error) Error() string {
    43  	return e.s
    44  }