mirror of
https://git.mirrors.martin98.com/https://github.com/ceph/ceph-csi.git
synced 2025-08-14 11:05:53 +08:00

Several packages are only used while running the e2e suite. These packages are less important to update, as the they can not influence the final executable that is part of the Ceph-CSI container-image. By moving these dependencies out of the main Ceph-CSI go.mod, it is easier to identify if a reported CVE affects Ceph-CSI, or only the testing (like most of the Kubernetes CVEs). Signed-off-by: Niels de Vos <ndevos@ibm.com>
685 lines
16 KiB
Go
685 lines
16 KiB
Go
// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved.
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// Use of this file is governed by the BSD 3-clause license that
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// can be found in the LICENSE.txt file in the project root.
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package antlr
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import (
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"fmt"
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"strconv"
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)
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const serializedVersion = 4
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type loopEndStateIntPair struct {
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item0 *LoopEndState
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item1 int
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}
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type blockStartStateIntPair struct {
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item0 BlockStartState
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item1 int
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}
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type ATNDeserializer struct {
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options *ATNDeserializationOptions
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data []int32
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pos int
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}
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func NewATNDeserializer(options *ATNDeserializationOptions) *ATNDeserializer {
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if options == nil {
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options = &defaultATNDeserializationOptions
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}
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return &ATNDeserializer{options: options}
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}
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//goland:noinspection GoUnusedFunction
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func stringInSlice(a string, list []string) int {
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for i, b := range list {
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if b == a {
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return i
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}
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}
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return -1
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}
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func (a *ATNDeserializer) Deserialize(data []int32) *ATN {
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a.data = data
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a.pos = 0
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a.checkVersion()
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atn := a.readATN()
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a.readStates(atn)
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a.readRules(atn)
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a.readModes(atn)
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sets := a.readSets(atn, nil)
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a.readEdges(atn, sets)
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a.readDecisions(atn)
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a.readLexerActions(atn)
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a.markPrecedenceDecisions(atn)
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a.verifyATN(atn)
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if a.options.GenerateRuleBypassTransitions() && atn.grammarType == ATNTypeParser {
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a.generateRuleBypassTransitions(atn)
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// Re-verify after modification
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a.verifyATN(atn)
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}
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return atn
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}
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func (a *ATNDeserializer) checkVersion() {
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version := a.readInt()
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if version != serializedVersion {
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panic("Could not deserialize ATN with version " + strconv.Itoa(version) + " (expected " + strconv.Itoa(serializedVersion) + ").")
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}
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}
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func (a *ATNDeserializer) readATN() *ATN {
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grammarType := a.readInt()
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maxTokenType := a.readInt()
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return NewATN(grammarType, maxTokenType)
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}
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func (a *ATNDeserializer) readStates(atn *ATN) {
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nstates := a.readInt()
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// Allocate worst case size.
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loopBackStateNumbers := make([]loopEndStateIntPair, 0, nstates)
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endStateNumbers := make([]blockStartStateIntPair, 0, nstates)
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// Preallocate states slice.
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atn.states = make([]ATNState, 0, nstates)
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for i := 0; i < nstates; i++ {
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stype := a.readInt()
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// Ignore bad types of states
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if stype == ATNStateInvalidType {
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atn.addState(nil)
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continue
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}
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ruleIndex := a.readInt()
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s := a.stateFactory(stype, ruleIndex)
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if stype == ATNStateLoopEnd {
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loopBackStateNumber := a.readInt()
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loopBackStateNumbers = append(loopBackStateNumbers, loopEndStateIntPair{s.(*LoopEndState), loopBackStateNumber})
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} else if s2, ok := s.(BlockStartState); ok {
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endStateNumber := a.readInt()
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endStateNumbers = append(endStateNumbers, blockStartStateIntPair{s2, endStateNumber})
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}
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atn.addState(s)
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}
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// Delay the assignment of loop back and end states until we know all the state
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// instances have been initialized
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for _, pair := range loopBackStateNumbers {
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pair.item0.loopBackState = atn.states[pair.item1]
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}
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for _, pair := range endStateNumbers {
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pair.item0.setEndState(atn.states[pair.item1].(*BlockEndState))
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}
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numNonGreedyStates := a.readInt()
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for j := 0; j < numNonGreedyStates; j++ {
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stateNumber := a.readInt()
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atn.states[stateNumber].(DecisionState).setNonGreedy(true)
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}
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numPrecedenceStates := a.readInt()
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for j := 0; j < numPrecedenceStates; j++ {
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stateNumber := a.readInt()
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atn.states[stateNumber].(*RuleStartState).isPrecedenceRule = true
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}
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}
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func (a *ATNDeserializer) readRules(atn *ATN) {
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nrules := a.readInt()
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if atn.grammarType == ATNTypeLexer {
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atn.ruleToTokenType = make([]int, nrules)
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}
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atn.ruleToStartState = make([]*RuleStartState, nrules)
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for i := range atn.ruleToStartState {
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s := a.readInt()
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startState := atn.states[s].(*RuleStartState)
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atn.ruleToStartState[i] = startState
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if atn.grammarType == ATNTypeLexer {
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tokenType := a.readInt()
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atn.ruleToTokenType[i] = tokenType
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}
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}
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atn.ruleToStopState = make([]*RuleStopState, nrules)
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for _, state := range atn.states {
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if s2, ok := state.(*RuleStopState); ok {
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atn.ruleToStopState[s2.ruleIndex] = s2
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atn.ruleToStartState[s2.ruleIndex].stopState = s2
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}
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}
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}
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func (a *ATNDeserializer) readModes(atn *ATN) {
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nmodes := a.readInt()
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atn.modeToStartState = make([]*TokensStartState, nmodes)
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for i := range atn.modeToStartState {
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s := a.readInt()
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atn.modeToStartState[i] = atn.states[s].(*TokensStartState)
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}
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}
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func (a *ATNDeserializer) readSets(_ *ATN, sets []*IntervalSet) []*IntervalSet {
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m := a.readInt()
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// Preallocate the needed capacity.
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if cap(sets)-len(sets) < m {
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isets := make([]*IntervalSet, len(sets), len(sets)+m)
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copy(isets, sets)
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sets = isets
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}
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for i := 0; i < m; i++ {
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iset := NewIntervalSet()
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sets = append(sets, iset)
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n := a.readInt()
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containsEOF := a.readInt()
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if containsEOF != 0 {
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iset.addOne(-1)
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}
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for j := 0; j < n; j++ {
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i1 := a.readInt()
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i2 := a.readInt()
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iset.addRange(i1, i2)
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}
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}
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return sets
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}
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func (a *ATNDeserializer) readEdges(atn *ATN, sets []*IntervalSet) {
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nedges := a.readInt()
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for i := 0; i < nedges; i++ {
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var (
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src = a.readInt()
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trg = a.readInt()
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ttype = a.readInt()
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arg1 = a.readInt()
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arg2 = a.readInt()
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arg3 = a.readInt()
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trans = a.edgeFactory(atn, ttype, src, trg, arg1, arg2, arg3, sets)
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srcState = atn.states[src]
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)
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srcState.AddTransition(trans, -1)
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}
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// Edges for rule stop states can be derived, so they are not serialized
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for _, state := range atn.states {
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for _, t := range state.GetTransitions() {
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var rt, ok = t.(*RuleTransition)
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if !ok {
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continue
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}
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outermostPrecedenceReturn := -1
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if atn.ruleToStartState[rt.getTarget().GetRuleIndex()].isPrecedenceRule {
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if rt.precedence == 0 {
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outermostPrecedenceReturn = rt.getTarget().GetRuleIndex()
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}
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}
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trans := NewEpsilonTransition(rt.followState, outermostPrecedenceReturn)
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atn.ruleToStopState[rt.getTarget().GetRuleIndex()].AddTransition(trans, -1)
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}
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}
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for _, state := range atn.states {
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if s2, ok := state.(BlockStartState); ok {
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// We need to know the end state to set its start state
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if s2.getEndState() == nil {
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panic("IllegalState")
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}
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// Block end states can only be associated to a single block start state
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if s2.getEndState().startState != nil {
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panic("IllegalState")
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}
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s2.getEndState().startState = state
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}
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if s2, ok := state.(*PlusLoopbackState); ok {
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for _, t := range s2.GetTransitions() {
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if t2, ok := t.getTarget().(*PlusBlockStartState); ok {
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t2.loopBackState = state
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}
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}
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} else if s2, ok := state.(*StarLoopbackState); ok {
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for _, t := range s2.GetTransitions() {
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if t2, ok := t.getTarget().(*StarLoopEntryState); ok {
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t2.loopBackState = state
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}
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}
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}
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}
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}
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func (a *ATNDeserializer) readDecisions(atn *ATN) {
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ndecisions := a.readInt()
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for i := 0; i < ndecisions; i++ {
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s := a.readInt()
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decState := atn.states[s].(DecisionState)
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atn.DecisionToState = append(atn.DecisionToState, decState)
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decState.setDecision(i)
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}
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}
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func (a *ATNDeserializer) readLexerActions(atn *ATN) {
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if atn.grammarType == ATNTypeLexer {
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count := a.readInt()
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atn.lexerActions = make([]LexerAction, count)
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for i := range atn.lexerActions {
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actionType := a.readInt()
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data1 := a.readInt()
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data2 := a.readInt()
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atn.lexerActions[i] = a.lexerActionFactory(actionType, data1, data2)
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}
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}
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}
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func (a *ATNDeserializer) generateRuleBypassTransitions(atn *ATN) {
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count := len(atn.ruleToStartState)
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for i := 0; i < count; i++ {
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atn.ruleToTokenType[i] = atn.maxTokenType + i + 1
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}
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for i := 0; i < count; i++ {
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a.generateRuleBypassTransition(atn, i)
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}
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}
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func (a *ATNDeserializer) generateRuleBypassTransition(atn *ATN, idx int) {
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bypassStart := NewBasicBlockStartState()
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bypassStart.ruleIndex = idx
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atn.addState(bypassStart)
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bypassStop := NewBlockEndState()
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bypassStop.ruleIndex = idx
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atn.addState(bypassStop)
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bypassStart.endState = bypassStop
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atn.defineDecisionState(&bypassStart.BaseDecisionState)
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bypassStop.startState = bypassStart
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var excludeTransition Transition
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var endState ATNState
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if atn.ruleToStartState[idx].isPrecedenceRule {
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// Wrap from the beginning of the rule to the StarLoopEntryState
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endState = nil
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for i := 0; i < len(atn.states); i++ {
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state := atn.states[i]
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if a.stateIsEndStateFor(state, idx) != nil {
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endState = state
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excludeTransition = state.(*StarLoopEntryState).loopBackState.GetTransitions()[0]
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break
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}
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}
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if excludeTransition == nil {
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panic("Couldn't identify final state of the precedence rule prefix section.")
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}
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} else {
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endState = atn.ruleToStopState[idx]
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}
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// All non-excluded transitions that currently target end state need to target
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// blockEnd instead
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for i := 0; i < len(atn.states); i++ {
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state := atn.states[i]
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for j := 0; j < len(state.GetTransitions()); j++ {
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transition := state.GetTransitions()[j]
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if transition == excludeTransition {
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continue
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}
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if transition.getTarget() == endState {
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transition.setTarget(bypassStop)
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}
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}
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}
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// All transitions leaving the rule start state need to leave blockStart instead
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ruleToStartState := atn.ruleToStartState[idx]
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count := len(ruleToStartState.GetTransitions())
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for count > 0 {
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bypassStart.AddTransition(ruleToStartState.GetTransitions()[count-1], -1)
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ruleToStartState.SetTransitions([]Transition{ruleToStartState.GetTransitions()[len(ruleToStartState.GetTransitions())-1]})
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}
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// Link the new states
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atn.ruleToStartState[idx].AddTransition(NewEpsilonTransition(bypassStart, -1), -1)
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bypassStop.AddTransition(NewEpsilonTransition(endState, -1), -1)
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MatchState := NewBasicState()
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atn.addState(MatchState)
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MatchState.AddTransition(NewAtomTransition(bypassStop, atn.ruleToTokenType[idx]), -1)
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bypassStart.AddTransition(NewEpsilonTransition(MatchState, -1), -1)
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}
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func (a *ATNDeserializer) stateIsEndStateFor(state ATNState, idx int) ATNState {
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if state.GetRuleIndex() != idx {
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return nil
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}
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if _, ok := state.(*StarLoopEntryState); !ok {
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return nil
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}
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maybeLoopEndState := state.GetTransitions()[len(state.GetTransitions())-1].getTarget()
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if _, ok := maybeLoopEndState.(*LoopEndState); !ok {
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return nil
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}
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var _, ok = maybeLoopEndState.GetTransitions()[0].getTarget().(*RuleStopState)
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if maybeLoopEndState.(*LoopEndState).epsilonOnlyTransitions && ok {
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return state
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}
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return nil
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}
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// markPrecedenceDecisions analyzes the StarLoopEntryState states in the
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// specified ATN to set the StarLoopEntryState.precedenceRuleDecision field to
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// the correct value.
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func (a *ATNDeserializer) markPrecedenceDecisions(atn *ATN) {
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for _, state := range atn.states {
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if _, ok := state.(*StarLoopEntryState); !ok {
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continue
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}
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// We analyze the [ATN] to determine if an ATN decision state is the
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// decision for the closure block that determines whether a
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// precedence rule should continue or complete.
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if atn.ruleToStartState[state.GetRuleIndex()].isPrecedenceRule {
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maybeLoopEndState := state.GetTransitions()[len(state.GetTransitions())-1].getTarget()
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if s3, ok := maybeLoopEndState.(*LoopEndState); ok {
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var _, ok2 = maybeLoopEndState.GetTransitions()[0].getTarget().(*RuleStopState)
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if s3.epsilonOnlyTransitions && ok2 {
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state.(*StarLoopEntryState).precedenceRuleDecision = true
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}
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}
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}
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}
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}
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func (a *ATNDeserializer) verifyATN(atn *ATN) {
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if !a.options.VerifyATN() {
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return
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}
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// Verify assumptions
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for _, state := range atn.states {
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if state == nil {
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continue
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}
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a.checkCondition(state.GetEpsilonOnlyTransitions() || len(state.GetTransitions()) <= 1, "")
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switch s2 := state.(type) {
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case *PlusBlockStartState:
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a.checkCondition(s2.loopBackState != nil, "")
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case *StarLoopEntryState:
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a.checkCondition(s2.loopBackState != nil, "")
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a.checkCondition(len(s2.GetTransitions()) == 2, "")
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switch s2.transitions[0].getTarget().(type) {
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case *StarBlockStartState:
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_, ok := s2.transitions[1].getTarget().(*LoopEndState)
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a.checkCondition(ok, "")
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a.checkCondition(!s2.nonGreedy, "")
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case *LoopEndState:
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var _, ok = s2.transitions[1].getTarget().(*StarBlockStartState)
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a.checkCondition(ok, "")
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a.checkCondition(s2.nonGreedy, "")
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default:
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panic("IllegalState")
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}
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case *StarLoopbackState:
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a.checkCondition(len(state.GetTransitions()) == 1, "")
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var _, ok = state.GetTransitions()[0].getTarget().(*StarLoopEntryState)
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a.checkCondition(ok, "")
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case *LoopEndState:
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a.checkCondition(s2.loopBackState != nil, "")
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case *RuleStartState:
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a.checkCondition(s2.stopState != nil, "")
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case BlockStartState:
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a.checkCondition(s2.getEndState() != nil, "")
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case *BlockEndState:
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a.checkCondition(s2.startState != nil, "")
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case DecisionState:
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a.checkCondition(len(s2.GetTransitions()) <= 1 || s2.getDecision() >= 0, "")
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default:
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var _, ok = s2.(*RuleStopState)
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a.checkCondition(len(s2.GetTransitions()) <= 1 || ok, "")
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}
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}
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}
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func (a *ATNDeserializer) checkCondition(condition bool, message string) {
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if !condition {
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if message == "" {
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message = "IllegalState"
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}
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panic(message)
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}
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}
|
|
|
|
func (a *ATNDeserializer) readInt() int {
|
|
v := a.data[a.pos]
|
|
|
|
a.pos++
|
|
|
|
return int(v) // data is 32 bits but int is at least that big
|
|
}
|
|
|
|
func (a *ATNDeserializer) edgeFactory(atn *ATN, typeIndex, _, trg, arg1, arg2, arg3 int, sets []*IntervalSet) Transition {
|
|
target := atn.states[trg]
|
|
|
|
switch typeIndex {
|
|
case TransitionEPSILON:
|
|
return NewEpsilonTransition(target, -1)
|
|
|
|
case TransitionRANGE:
|
|
if arg3 != 0 {
|
|
return NewRangeTransition(target, TokenEOF, arg2)
|
|
}
|
|
|
|
return NewRangeTransition(target, arg1, arg2)
|
|
|
|
case TransitionRULE:
|
|
return NewRuleTransition(atn.states[arg1], arg2, arg3, target)
|
|
|
|
case TransitionPREDICATE:
|
|
return NewPredicateTransition(target, arg1, arg2, arg3 != 0)
|
|
|
|
case TransitionPRECEDENCE:
|
|
return NewPrecedencePredicateTransition(target, arg1)
|
|
|
|
case TransitionATOM:
|
|
if arg3 != 0 {
|
|
return NewAtomTransition(target, TokenEOF)
|
|
}
|
|
|
|
return NewAtomTransition(target, arg1)
|
|
|
|
case TransitionACTION:
|
|
return NewActionTransition(target, arg1, arg2, arg3 != 0)
|
|
|
|
case TransitionSET:
|
|
return NewSetTransition(target, sets[arg1])
|
|
|
|
case TransitionNOTSET:
|
|
return NewNotSetTransition(target, sets[arg1])
|
|
|
|
case TransitionWILDCARD:
|
|
return NewWildcardTransition(target)
|
|
}
|
|
|
|
panic("The specified transition type is not valid.")
|
|
}
|
|
|
|
func (a *ATNDeserializer) stateFactory(typeIndex, ruleIndex int) ATNState {
|
|
var s ATNState
|
|
|
|
switch typeIndex {
|
|
case ATNStateInvalidType:
|
|
return nil
|
|
|
|
case ATNStateBasic:
|
|
s = NewBasicState()
|
|
|
|
case ATNStateRuleStart:
|
|
s = NewRuleStartState()
|
|
|
|
case ATNStateBlockStart:
|
|
s = NewBasicBlockStartState()
|
|
|
|
case ATNStatePlusBlockStart:
|
|
s = NewPlusBlockStartState()
|
|
|
|
case ATNStateStarBlockStart:
|
|
s = NewStarBlockStartState()
|
|
|
|
case ATNStateTokenStart:
|
|
s = NewTokensStartState()
|
|
|
|
case ATNStateRuleStop:
|
|
s = NewRuleStopState()
|
|
|
|
case ATNStateBlockEnd:
|
|
s = NewBlockEndState()
|
|
|
|
case ATNStateStarLoopBack:
|
|
s = NewStarLoopbackState()
|
|
|
|
case ATNStateStarLoopEntry:
|
|
s = NewStarLoopEntryState()
|
|
|
|
case ATNStatePlusLoopBack:
|
|
s = NewPlusLoopbackState()
|
|
|
|
case ATNStateLoopEnd:
|
|
s = NewLoopEndState()
|
|
|
|
default:
|
|
panic(fmt.Sprintf("state type %d is invalid", typeIndex))
|
|
}
|
|
|
|
s.SetRuleIndex(ruleIndex)
|
|
|
|
return s
|
|
}
|
|
|
|
func (a *ATNDeserializer) lexerActionFactory(typeIndex, data1, data2 int) LexerAction {
|
|
switch typeIndex {
|
|
case LexerActionTypeChannel:
|
|
return NewLexerChannelAction(data1)
|
|
|
|
case LexerActionTypeCustom:
|
|
return NewLexerCustomAction(data1, data2)
|
|
|
|
case LexerActionTypeMode:
|
|
return NewLexerModeAction(data1)
|
|
|
|
case LexerActionTypeMore:
|
|
return LexerMoreActionINSTANCE
|
|
|
|
case LexerActionTypePopMode:
|
|
return LexerPopModeActionINSTANCE
|
|
|
|
case LexerActionTypePushMode:
|
|
return NewLexerPushModeAction(data1)
|
|
|
|
case LexerActionTypeSkip:
|
|
return LexerSkipActionINSTANCE
|
|
|
|
case LexerActionTypeType:
|
|
return NewLexerTypeAction(data1)
|
|
|
|
default:
|
|
panic(fmt.Sprintf("lexer action %d is invalid", typeIndex))
|
|
}
|
|
}
|