func visitField(instr *ssa.Field, infer *TypeInfer, ctx *Context) {
field, struc, index := instr, instr.X, instr.Field
if sType, ok := struc.Type().Underlying().(*types.Struct); ok {
sInst, ok := ctx.F.locals[struc]
if !ok {
infer.Logger.Fatalf("field: %s :%+v", ErrUnknownValue, struc)
return
}
fields, ok := ctx.F.structs[sInst]
if !ok {
fields, ok = ctx.F.Prog.structs[sInst]
if !ok {
infer.Logger.Fatalf("field: %s: struct uninitialised %+v", ErrUnknownValue, sInst)
return
}
}
infer.Logger.Print(ctx.F.Sprintf(ValSymbol+"%s = %s"+FieldSymbol+"{%d} of type %s", instr.Name(), sInst, index, sType.String()))
if fields[index] != nil {
infer.Logger.Print(ctx.F.Sprintf(SubSymbol+"accessed as %s", fields[index]))
} else {
fields[index] = &Value{field, ctx.F.InstanceID(), ctx.L.Index}
infer.Logger.Print(ctx.F.Sprintf(SubSymbol+"field uninitialised, set to %s", field.Name()))
}
initNestedRefVar(infer, ctx, ctx.F.locals[field], false)
ctx.F.locals[field] = fields[index]
return
}
infer.Logger.Fatalf("field: %s: field is not struct: %+v", ErrInvalidVarRead, struc)
}
