feat: connect to spicedb

1 files changed, 150 insertions, 0 deletions

diff --git a/vendor/github.com/antlr4-go/antlr/v4/comparators.go b/vendor/github.com/antlr4-go/antlr/v4/comparators.go
new file mode 100644
index 0000000..7467e9b
--- /dev/null
+++ b/vendor/github.com/antlr4-go/antlr/v4/comparators.go
@@ -0,0 +1,150 @@
+package antlr
+
+// Copyright (c) 2012-2022 The ANTLR Project. All rights reserved.
+// Use of this file is governed by the BSD 3-clause license that
+// can be found in the LICENSE.txt file in the project root.
+
+// This file contains all the implementations of custom comparators used for generic collections when the
+// Hash() and Equals() funcs supplied by the struct objects themselves need to be overridden. Normally, we would
+// put the comparators in the source file for the struct themselves, but given the organization of this code is
+// sorta kinda based upon the Java code, I found it confusing trying to find out which comparator was where and used by
+// which instantiation of a collection. For instance, an Array2DHashSet in the Java source, when used with ATNConfig
+// collections requires three different comparators depending on what the collection is being used for. Collecting - pun intended -
+// all the comparators here, makes it much easier to see which implementation of hash and equals is used by which collection.
+// It also makes it easy to verify that the Hash() and Equals() functions marry up with the Java implementations.
+
+// ObjEqComparator is the equivalent of the Java ObjectEqualityComparator, which is the default instance of
+// Equality comparator. We do not have inheritance in Go, only interfaces, so we use generics to enforce some
+// type safety and avoid having to implement this for every type that we want to perform comparison on.
+//
+// This comparator works by using the standard Hash() and Equals() methods of the type T that is being compared. Which
+// allows us to use it in any collection instance that does not require a special hash or equals implementation.
+type ObjEqComparator[T Collectable[T]] struct{}
+
+var (
+	aStateEqInst = &ObjEqComparator[ATNState]{}
+	aConfEqInst  = &ObjEqComparator[*ATNConfig]{}
+
+	// aConfCompInst is the comparator used for the ATNConfigSet for the configLookup cache
+	aConfCompInst   = &ATNConfigComparator[*ATNConfig]{}
+	atnConfCompInst = &BaseATNConfigComparator[*ATNConfig]{}
+	dfaStateEqInst  = &ObjEqComparator[*DFAState]{}
+	semctxEqInst    = &ObjEqComparator[SemanticContext]{}
+	atnAltCfgEqInst = &ATNAltConfigComparator[*ATNConfig]{}
+	pContextEqInst  = &ObjEqComparator[*PredictionContext]{}
+)
+
+// Equals2 delegates to the Equals() method of type T
+func (c *ObjEqComparator[T]) Equals2(o1, o2 T) bool {
+	return o1.Equals(o2)
+}
+
+// Hash1 delegates to the Hash() method of type T
+func (c *ObjEqComparator[T]) Hash1(o T) int {
+
+	return o.Hash()
+}
+
+type SemCComparator[T Collectable[T]] struct{}
+
+// ATNConfigComparator is used as the comparator for the configLookup field of an ATNConfigSet
+// and has a custom Equals() and Hash() implementation, because equality is not based on the
+// standard Hash() and Equals() methods of the ATNConfig type.
+type ATNConfigComparator[T Collectable[T]] struct {
+}
+
+// Equals2 is a custom comparator for ATNConfigs specifically for configLookup
+func (c *ATNConfigComparator[T]) Equals2(o1, o2 *ATNConfig) bool {
+
+	// Same pointer, must be equal, even if both nil
+	//
+	if o1 == o2 {
+		return true
+
+	}
+
+	// If either are nil, but not both, then the result is false
+	//
+	if o1 == nil || o2 == nil {
+		return false
+	}
+
+	return o1.GetState().GetStateNumber() == o2.GetState().GetStateNumber() &&
+		o1.GetAlt() == o2.GetAlt() &&
+		o1.GetSemanticContext().Equals(o2.GetSemanticContext())
+}
+
+// Hash1 is custom hash implementation for ATNConfigs specifically for configLookup
+func (c *ATNConfigComparator[T]) Hash1(o *ATNConfig) int {
+
+	hash := 7
+	hash = 31*hash + o.GetState().GetStateNumber()
+	hash = 31*hash + o.GetAlt()
+	hash = 31*hash + o.GetSemanticContext().Hash()
+	return hash
+}
+
+// ATNAltConfigComparator is used as the comparator for mapping configs to Alt Bitsets
+type ATNAltConfigComparator[T Collectable[T]] struct {
+}
+
+// Equals2 is a custom comparator for ATNConfigs specifically for configLookup
+func (c *ATNAltConfigComparator[T]) Equals2(o1, o2 *ATNConfig) bool {
+
+	// Same pointer, must be equal, even if both nil
+	//
+	if o1 == o2 {
+		return true
+
+	}
+
+	// If either are nil, but not both, then the result is false
+	//
+	if o1 == nil || o2 == nil {
+		return false
+	}
+
+	return o1.GetState().GetStateNumber() == o2.GetState().GetStateNumber() &&
+		o1.GetContext().Equals(o2.GetContext())
+}
+
+// Hash1 is custom hash implementation for ATNConfigs specifically for configLookup
+func (c *ATNAltConfigComparator[T]) Hash1(o *ATNConfig) int {
+	h := murmurInit(7)
+	h = murmurUpdate(h, o.GetState().GetStateNumber())
+	h = murmurUpdate(h, o.GetContext().Hash())
+	return murmurFinish(h, 2)
+}
+
+// BaseATNConfigComparator is used as the comparator for the configLookup field of a ATNConfigSet
+// and has a custom Equals() and Hash() implementation, because equality is not based on the
+// standard Hash() and Equals() methods of the ATNConfig type.
+type BaseATNConfigComparator[T Collectable[T]] struct {
+}
+
+// Equals2 is a custom comparator for ATNConfigs specifically for baseATNConfigSet
+func (c *BaseATNConfigComparator[T]) Equals2(o1, o2 *ATNConfig) bool {
+
+	// Same pointer, must be equal, even if both nil
+	//
+	if o1 == o2 {
+		return true
+
+	}
+
+	// If either are nil, but not both, then the result is false
+	//
+	if o1 == nil || o2 == nil {
+		return false
+	}
+
+	return o1.GetState().GetStateNumber() == o2.GetState().GetStateNumber() &&
+		o1.GetAlt() == o2.GetAlt() &&
+		o1.GetSemanticContext().Equals(o2.GetSemanticContext())
+}
+
+// Hash1 is custom hash implementation for ATNConfigs specifically for configLookup, but in fact just
+// delegates to the standard Hash() method of the ATNConfig type.
+func (c *BaseATNConfigComparator[T]) Hash1(o *ATNConfig) int {
+	return o.Hash()
+}