core: fix typos (#28218)

* fix(core/txpool): fix typos

* core/asm: fix typos

* core/bloombits: fix typos

* core/rawdb: fix typos

core/asm/asm.go

@@ -34,7 +34,7 @@ type instructionIterator struct {
 	started bool
 }
 
-// NewInstructionIterator create a new instruction iterator.
+// NewInstructionIterator creates a new instruction iterator.
 func NewInstructionIterator(code []byte) *instructionIterator {
 	it := new(instructionIterator)
 	it.code = code

core/asm/compiler.go

@@ -49,7 +49,7 @@ func NewCompiler(debug bool) *Compiler {
 	}
 }
 
-// Feed feeds tokens in to ch and are interpreted by
+// Feed feeds tokens into ch and are interpreted by
 // the compiler.
 //
 // feed is the first pass in the compile stage as it collects the used labels in the

core/asm/lex_test.go

@@ -72,12 +72,12 @@ func TestLexer(t *testing.T) {
 			input:  "@label123",
 			tokens: []token{{typ: lineStart}, {typ: label, text: "label123"}, {typ: eof}},
 		},
-		// comment after label
+		// Comment after label
 		{
 			input:  "@label123 ;; comment",
 			tokens: []token{{typ: lineStart}, {typ: label, text: "label123"}, {typ: eof}},
 		},
-		// comment after instruction
+		// Comment after instruction
 		{
 			input:  "push 3 ;; comment\nadd",
 			tokens: []token{{typ: lineStart}, {typ: element, text: "push"}, {typ: number, text: "3"}, {typ: lineEnd, text: "\n"}, {typ: lineStart, lineno: 1}, {typ: element, lineno: 1, text: "add"}, {typ: eof, lineno: 1}},

core/bloombits/matcher.go

@@ -58,7 +58,7 @@ type partialMatches struct {
 // bit with the given number of fetch elements, or a response for such a request.
 // It can also have the actual results set to be used as a delivery data struct.
 //
-// The contest and error fields are used by the light client to terminate matching
+// The context and error fields are used by the light client to terminate matching
 // early if an error is encountered on some path of the pipeline.
 type Retrieval struct {
 	Bit      uint
@@ -389,7 +389,7 @@ func (m *Matcher) distributor(dist chan *request, session *MatcherSession) {
 		shutdown   = session.quit            // Shutdown request channel, will gracefully wait for pending requests
 	)
 
-	// assign is a helper method fo try to assign a pending bit an actively
+	// assign is a helper method to try to assign a pending bit an actively
 	// listening servicer, or schedule it up for later when one arrives.
 	assign := func(bit uint) {
 		select {

core/bloombits/matcher_test.go

@@ -85,7 +85,7 @@ func TestMatcherRandom(t *testing.T) {
 }
 
 // Tests that the matcher can properly find matches if the starting block is
-// shifter from a multiple of 8. This is needed to cover an optimisation with
+// shifted from a multiple of 8. This is needed to cover an optimisation with
 // bitset matching https://github.com/ethereum/go-ethereum/issues/15309.
 func TestMatcherShifted(t *testing.T) {
 	t.Parallel()
@@ -106,7 +106,7 @@ func TestWildcardMatcher(t *testing.T) {
 	testMatcherBothModes(t, nil, 0, 10000, 0)
 }
 
-// makeRandomIndexes generates a random filter system, composed on multiple filter
+// makeRandomIndexes generates a random filter system, composed of multiple filter
 // criteria, each having one bloom list component for the address and arbitrarily
 // many topic bloom list components.
 func makeRandomIndexes(lengths []int, max int) [][]bloomIndexes {

core/rawdb/chain_freezer.go

@@ -200,7 +200,7 @@ func (f *chainFreezer) freeze(db ethdb.KeyValueStore) {
 		}
 		batch.Reset()
 
-		// Step into the future and delete and dangling side chains
+		// Step into the future and delete any dangling side chains
 		if frozen > 0 {
 			tip := frozen
 			for len(dangling) > 0 {

core/rawdb/database.go

@@ -34,7 +34,7 @@ import (
 	"github.com/olekukonko/tablewriter"
 )
 
-// freezerdb is a database wrapper that enabled freezer data retrievals.
+// freezerdb is a database wrapper that enables freezer data retrievals.
 type freezerdb struct {
 	ancientRoot string
 	ethdb.KeyValueStore
@@ -141,7 +141,7 @@ func (db *nofreezedb) ReadAncients(fn func(reader ethdb.AncientReaderOp) error)
 	// Unlike other ancient-related methods, this method does not return
 	// errNotSupported when invoked.
 	// The reason for this is that the caller might want to do several things:
-	// 1. Check if something is in freezer,
+	// 1. Check if something is in the freezer,
 	// 2. If not, check leveldb.
 	//
 	// This will work, since the ancient-checks inside 'fn' will return errors,
@@ -209,7 +209,7 @@ func NewDatabaseWithFreezer(db ethdb.KeyValueStore, ancient string, namespace st
 	// of the freezer and database. Ensure that we don't shoot ourselves in the foot
 	// by serving up conflicting data, leading to both datastores getting corrupted.
 	//
-	//   - If both the freezer and key-value store is empty (no genesis), we just
+	//   - If both the freezer and key-value store are empty (no genesis), we just
 	//     initialized a new empty freezer, so everything's fine.
 	//   - If the key-value store is empty, but the freezer is not, we need to make
 	//     sure the user's genesis matches the freezer. That will be checked in the
@@ -218,7 +218,7 @@ func NewDatabaseWithFreezer(db ethdb.KeyValueStore, ancient string, namespace st
 	//   - If neither the key-value store nor the freezer is empty, cross validate
 	//     the genesis hashes to make sure they are compatible. If they are, also
 	//     ensure that there's no gap between the freezer and subsequently leveldb.
-	//   - If the key-value store is not empty, but the freezer is we might just be
+	//   - If the key-value store is not empty, but the freezer is, we might just be
 	//     upgrading to the freezer release, or we might have had a small chain and
 	//     not frozen anything yet. Ensure that no blocks are missing yet from the
 	//     key-value store, since that would mean we already had an old freezer.
@@ -634,7 +634,7 @@ func printChainMetadata(db ethdb.KeyValueStore) {
 	fmt.Fprintf(os.Stderr, "\n\n")
 }
 
-// ReadChainMetadata returns a set of key/value pairs that contains informatin
+// ReadChainMetadata returns a set of key/value pairs that contains information
 // about the database chain status. This can be used for diagnostic purposes
 // when investigating the state of the node.
 func ReadChainMetadata(db ethdb.KeyValueStore) [][]string {

core/rawdb/databases_64bit.go

@@ -23,7 +23,7 @@ import (
 	"github.com/ethereum/go-ethereum/ethdb/pebble"
 )
 
-// Pebble is unsuported on 32bit architecture
+// Pebble is unsupported on 32bit architecture
 const PebbleEnabled = true
 
 // NewPebbleDBDatabase creates a persistent key-value database without a freezer

core/rawdb/table.go

@@ -219,7 +219,7 @@ func (b *tableBatch) Put(key, value []byte) error {
 	return b.batch.Put(append([]byte(b.prefix), key...), value)
 }
 
-// Delete inserts the a key removal into the batch for later committing.
+// Delete inserts a key removal into the batch for later committing.
 func (b *tableBatch) Delete(key []byte) error {
 	return b.batch.Delete(append([]byte(b.prefix), key...))
 }