// Compute hash value for each case label constant and store the hash buckets
// into a dictionary indexed by hash value.
private static Dictionary <uint, HashBucket> ComputeStringHashMap(
KeyValuePair <ConstantValue, object>[] caseLabels,
GetStringHashCode computeStringHashcodeDelegate)
{
Debug.Assert(caseLabels != null);
var stringHashMap = new Dictionary <uint, HashBucket>(caseLabels.Length);
foreach (var kvPair in caseLabels)
{
ConstantValue stringConstant = kvPair.Key;
Debug.Assert(stringConstant.IsNull || stringConstant.IsString);
uint hash = computeStringHashcodeDelegate((string)stringConstant.Value);
HashBucket bucket;
if (!stringHashMap.TryGetValue(hash, out bucket))
{
bucket = new HashBucket();
stringHashMap.Add(hash, bucket);
}
Debug.Assert(!bucket.Contains(kvPair));
bucket.Add(kvPair);
}
return(stringHashMap);
}
internal SwitchStringJumpTableEmitter(
ILBuilder builder,
LocalDefinition key,
KeyValuePair <ConstantValue, object>[] caseLabels,
object fallThroughLabel,
LocalDefinition keyHash,
EmitStringCompareAndBranch emitStringCondBranchDelegate,
GetStringHashCode computeStringHashcodeDelegate)
{
Debug.Assert(caseLabels.Length > 0);
Debug.Assert(emitStringCondBranchDelegate != null);
this.builder = builder;
this.key = key;
this.caseLabels = caseLabels;
this.fallThroughLabel = fallThroughLabel;
this.keyHash = keyHash;
this.emitStringCondBranchDelegate = emitStringCondBranchDelegate;
this.computeStringHashcodeDelegate = computeStringHashcodeDelegate;
}
internal SwitchStringJumpTableEmitter(
ILBuilder builder,
LocalOrParameter key,
KeyValuePair<ConstantValue, object>[] caseLabels,
object fallThroughLabel,
LocalDefinition keyHash,
EmitStringCompareAndBranch emitStringCondBranchDelegate,
GetStringHashCode computeStringHashcodeDelegate)
{
Debug.Assert(caseLabels.Length > 0);
Debug.Assert(emitStringCondBranchDelegate != null);
_builder = builder;
_key = key;
_caseLabels = caseLabels;
_fallThroughLabel = fallThroughLabel;
_keyHash = keyHash;
_emitStringCondBranchDelegate = emitStringCondBranchDelegate;
_computeStringHashcodeDelegate = computeStringHashcodeDelegate;
}
internal SwitchStringJumpTableEmitter(
ILBuilder builder,
LocalOrParameter key,
KeyValuePair <ConstantValue, object>[] caseLabels,
object fallThroughLabel,
LocalDefinition?keyHash,
EmitStringCompareAndBranch emitStringCondBranchDelegate,
GetStringHashCode computeStringHashcodeDelegate)
{
Debug.Assert(caseLabels.Length > 0);
RoslynDebug.Assert(emitStringCondBranchDelegate != null);
_builder = builder;
_key = key;
_caseLabels = caseLabels;
_fallThroughLabel = fallThroughLabel;
_keyHash = keyHash;
_emitStringCondBranchDelegate = emitStringCondBranchDelegate;
_computeStringHashcodeDelegate = computeStringHashcodeDelegate;
}
// Compute hash value for each case label constant and store the hash buckets
// into a dictionary indexed by hash value.
private static Dictionary<uint, HashBucket> ComputeStringHashMap(
KeyValuePair<ConstantValue, object>[] caseLabels,
GetStringHashCode computeStringHashcodeDelegate)
{
Debug.Assert(caseLabels != null);
var stringHashMap = new Dictionary<uint, HashBucket>(caseLabels.Length);
foreach (var kvPair in caseLabels)
{
ConstantValue stringConstant = kvPair.Key;
Debug.Assert(stringConstant.IsNull || stringConstant.IsString);
uint hash = computeStringHashcodeDelegate((string)stringConstant.Value);
HashBucket bucket;
if (!stringHashMap.TryGetValue(hash, out bucket))
{
bucket = new HashBucket();
stringHashMap.Add(hash, bucket);
}
Debug.Assert(!bucket.Contains(kvPair));
bucket.Add(kvPair);
}
return stringHashMap;
}
