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package scope
import "jinx/pkg/lang/vm/code"
type ScopeID int
type ScopeKind int
const (
ScopeKindNormal ScopeKind = iota
ScopeKindFunction
ScopeKindLoop
)
type SymbolScope struct {
nameToSymbol map[string]SymbolID
variableSymbols []Symbol[SymbolVariable]
globalSymbols []Symbol[SymbolGlobal]
}
func NewSymbolScope() SymbolScope {
return SymbolScope{
nameToSymbol: make(map[string]SymbolID),
variableSymbols: make([]Symbol[SymbolVariable], 0),
globalSymbols: make([]Symbol[SymbolGlobal], 0),
}
}
type FunctionScope struct {
id ScopeID
unit code.Marker
subUnitCount int
outsideSymbolsInEnv []SymbolID
isMethod bool
methodLocal int // -1 if in env 0
}
func NewFunctionScope(id ScopeID, unit code.Marker) FunctionScope {
return FunctionScope{
id: id,
unit: unit,
subUnitCount: 0,
outsideSymbolsInEnv: make([]SymbolID, 0),
}
}
func NewMethodFunctionScope(id ScopeID, unit code.Marker, methodLocal int) FunctionScope {
return FunctionScope{
id: id,
unit: unit,
subUnitCount: 0,
outsideSymbolsInEnv: make([]SymbolID, 0),
isMethod: true,
methodLocal: methodLocal,
}
}
func (sf FunctionScope) ID() ScopeID {
return sf.id
}
func (sf FunctionScope) Unit() code.Marker {
return sf.unit
}
func (sf FunctionScope) OutsideSymbolsInEnv() []SymbolID {
return sf.outsideSymbolsInEnv
}
func (sf FunctionScope) IsRootScope() bool {
return sf.ID() == ScopeID(0)
}
func (sf FunctionScope) IsMethod() bool {
return sf.isMethod
}
func (sf FunctionScope) ThisLocal() (bool, int) {
if !sf.isMethod {
return false, 0
}
if sf.methodLocal == -1 {
return false, 0
}
return true, sf.methodLocal
}
type LoopScope struct {
id ScopeID
breakMarker code.Marker
continueMarker code.Marker
}
func NewLoopScope(id ScopeID, breakMarker code.Marker, continueMarker code.Marker) LoopScope {
return LoopScope{
id: id,
breakMarker: breakMarker,
continueMarker: continueMarker,
}
}
func (sl LoopScope) ID() ScopeID {
return sl.id
}
func (sl LoopScope) BreakMarker() code.Marker {
return sl.breakMarker
}
func (sl LoopScope) ContinueMarker() code.Marker {
return sl.continueMarker
}
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