// Generates code to compute and push the address of a named variable.
// vname is the program phrase that names this variable.
// currentLevel is the routine level where the vname occurs.
// frameSize is the anticipated size of the local stack frame when
// the variable is addressed at run-time.
void EncodeFetchAddress(Identifier identifier, Frame frame)
{
AddressableEntity baseObject = identifier.Declaration.Entity as AddressableEntity;
// If indexed = true, code will have been generated to load an index
// value.
baseObject.EncodeFetchAddress(emitter, frame, identifier);
}
// REGISTERS
// Generates code to fetch the value of a named constant or variable
// and push it on to the stack.
// currentLevel is the routine level where the vname occurs.
// frameSize is the anticipated size of the local stack frame when
// the constant or variable is fetched at run-time.
// valSize is the size of the constant or variable's value.
void EncodeAssign(Identifier identifier, Frame frame, int valSize)
{
AddressableEntity baseObject = identifier.Declaration.Entity as AddressableEntity;
// If indexed = true, code will have been generated to load an index
// value.
if (valSize > 255)
{
errorReporter.ReportMessage("can't store values larger than 255 words");
valSize = 255; // to allow code generation to continue
}
baseObject.EncodeAssign(emitter, frame, valSize, identifier);
}