func (ctx *LinkingContext) ProcessInstructionWithLocalScope(ins *tp.Instruction, scopeType int, localScope LocalDef, caller string, path string, justRoot bool) (returnType int) {
returnType = -1
ins.IsValid = proto.Bool(true)
switch *ins.Type {
case constants.Instruction_IMPORT:
importLocation := ins.GetValue()
// keep track of which files we're inside of, to detect circular imports
val, present := ctx.Visiting[importLocation]
if present && val {
ctx.error(ins, "Circular import detected: %s", importLocation)
panic(fmt.Sprintf("Circular import detected: %s", importLocation))
}
ctx.Visiting[importLocation] = true
importId, ok := ctx.objMap[importLocation]
if ok != true {
ctx.error(ins, "Invalid import `%s`", ins.String())
}
// if we're linking the whole tree, then recurse
if !justRoot {
// Make sure this object is linked with the right scopeType
ctx.link(importId, scopeType)
// otherwise just set the script object's scope type
} else {
ctx.Objects[importId].ScopeTypeId = proto.Int(scopeType)
}
// pop the import stack (for circular import detection)
ctx.Visiting[importLocation] = false
ins.ObjectId = proto.Int(importId)
ins.Value = nil
case constants.Instruction_LOCAL_VAR:
name := null.GetString(ins.Value)
if name == "1" || name == "2" || name == "3" || name == "4" || name == "5" || name == "6" || name == "7" {
if len(ins.Arguments) > 0 {
// We are going to assign something to this variable
returnType = ctx.ProcessInstructionWithLocalScope(ins.Arguments[0], scopeType, localScope, caller, path, justRoot)
if returnType != ctx.textType {
ctx.error(ins, "Numeric local vars can ONLY be Text")
}
}
if ins.Children != nil {
for _, child := range ins.Children {
ctx.ProcessInstructionWithLocalScope(child, ctx.textType, localScope, caller, path, justRoot)
}
}
returnType = ctx.textType
} else { // Not numeric.
typeId, found := localScope[name]
if found {
returnType = typeId
if len(ins.Arguments) > 0 {
ctx.error(ins, "The local variable \"%%%s\" has been assigned before and cannot be reassigned! Open a scope on it if you need to alter the contents.", name)
} else {
if ins.Children != nil {
for _, child := range ins.Children {
returnType = ctx.ProcessInstructionWithLocalScope(child, typeId, localScope, caller, path, justRoot)
}
}
}
} else {
if len(ins.Arguments) > 0 {
// We are going to assign something to this variable
// But first, check for possible mutation and prevent it for now.
if ins.Children != nil {
ctx.error(ins, "May not open a scope during initialization of local variable \"%%%s\".", name)
}
returnType = ctx.ProcessInstructionWithLocalScope(ins.Arguments[0], scopeType, localScope, caller, path, justRoot)
localScope[name] = returnType
} else {
ctx.error(ins, "I've never seen the variable \"%%%s\" before! Please assign a value before usage.", name)
}
}
}
case constants.Instruction_FUNCTION_CALL:
stub := null.GetString(ins.Value)
if stub == "yield" {
ins.YieldTypeId = proto.Int32(int32(scopeType))
}
namespaces := ins.Namespaces()
// ins.Namespace = nil // need to figure out where to do this step
// process the args
if ins.Arguments != nil {
for _, arg := range ins.Arguments {
argReturn := ctx.ProcessInstructionWithLocalScope(arg, scopeType, localScope, caller, path, justRoot)
if argReturn == -1 {
ctx.error(ins, "Invalid argument object %q", arg.String())
return
}
stub = stub + "," + ctx.types[argReturn]
}
}
// for each namespace specified by the user, look up the function wrt the current context type + function name
var funcId int
var ok bool
for _, ns := range namespaces {
funcId, ok = ctx.funList[scopeType][ns+"."+stub]
if ok {
break
}
}
if !ok {
readableCalleeStub := readableStub(stub)
readableCallerStub := readableStub(caller)
location := ""
if len(path) > 0 {
location = path
} else {
location = "Package " + ctx.Pkg.GetName()
}
msg := fmt.Sprintf("%s:%d: function %s.%s does not exist in namespace %s", location, ins.GetLineNumber(), ctx.types[scopeType], readableCalleeStub, namespaces[0])
for i := 1; i < len(namespaces)-1; i++ {
msg += ", " + namespaces[i]
}
if len(namespaces) > 1 {
msg += " or " + namespaces[len(namespaces)-1]
}
msg += fmt.Sprintf("; (called from %s.%s).", ctx.types[scopeType], readableCallerStub)
ctx.error(ins, msg)
// message := fmt.Sprintf("Available functions in %s.%s:\n", ns, ctx.types[scopeType])
// ns := strings.SplitN(stub, ".", 2)[0]
// nsPrefix := ns + "."
// for funcName, _ := range ctx.funList[scopeType] {
// if strings.HasPrefix(funcName, nsPrefix) {
// message += "\t" + nsPrefix + readableStub(funcName) + "\n"
// }
// }
// log.Printf("%s\n", message)
// ctx.error(ins, "%s:%d: could not find function %s.%s.%s (called from %s.%s.%s)", location, ins.GetLineNumber(), ns, ctx.types[scopeType], readableCalleeStub, callerNamespace, ctx.types[scopeType], readableCallerStub)
} else {
ins.FunctionId = proto.Int32(int32(funcId))
fun := ctx.Pkg.Functions[funcId]
returnType = int(null.GetInt32(fun.ReturnTypeId))
opensScopeType := int(null.GetInt32(fun.OpensTypeId))
if opensScopeType == 0 {
// If we're a Base scope, don't mess with texas!
opensScopeType = scopeType
}
// If it inherits:
inheritedOpensScopeType := ctx.Pkg.FindDescendantType(int32(opensScopeType))
if inheritedOpensScopeType != -1 {
opensScopeType = inheritedOpensScopeType
}
// Copy the local scope
parentScope := localScope
localScope = make(LocalDef, len(parentScope))
for s, t := range parentScope {
localScope[s] = t
}
if ins.Children != nil {
for _, child := range ins.Children {
ctx.ProcessInstructionWithLocalScope(child, opensScopeType, localScope, stub, path, justRoot) // thread the name of the caller through the linkages
}
}
}
case constants.Instruction_TEXT:
returnType = ctx.textType
case constants.Instruction_BLOCK:
if ins.Children != nil {
for _, child := range ins.Children {
returnType = ctx.ProcessInstructionWithLocalScope(child, scopeType, localScope, caller, path, justRoot)
}
}
}
return
}
func printInstruction(i *tp.Instruction, indLvl int) {
printIndent("Type -> %v", indLvl, i.GetType())
printIndent("Value -> %v", indLvl, i.GetValue())
printIndent("ObjectId -> %v", indLvl, i.GetObjectId())
printIndent("Function Id -> %v", indLvl, i.GetFunctionId())
printIndent("Line Number -> %v", indLvl, i.GetLineNumber())
printIndent("Yield Type Id -> %v", indLvl, i.GetYieldTypeId())
printIndent("Is Valid -> %v", indLvl, i.GetIsValid())
printIndent("Namespace -> %v", indLvl, i.GetNamespace())
printIndent("Type Qualifier -> %v", indLvl, i.GetTypeQualifier())
//printIndent("Is User Called -> %v", indLvl, i.GetIsUserCalled()) //doesn't have an accessor for some reason
printIndent("Children:", indLvl)
for ind, item := range i.GetChildren() {
printIndent("Child[%d]:", indLvl+1, ind)
printInstruction(item, indLvl+2)
}
printIndent("Arguments:", indLvl)
for ind, item := range i.GetArguments() {
printIndent("Argument[%d]:", indLvl+1, ind)
printInstruction(item, indLvl+2)
}
}