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Added Pipe and Match parsers

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This commit is contained in:
Brandon Dyck
2024-09-17 20:10:19 -06:00
parent 4fa3c2a466
commit edff0f8ca0
2 changed files with 62 additions and 7 deletions
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14
parser_test.go
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@ -43,19 +43,19 @@ func TestSlice(t *testing.T) {
s := rapid.SliceOfN(rapid.Byte(), 1, -1).Draw(t, "s")
input := rapid.SliceOfN(rapid.Byte(), len(s), -1).
Filter(not(hasPrefix(s))).Draw(t, "input")
assertParseFails(t, input, gigaparsec.Slice(s))
assertParseFails(t, input, gigaparsec.MatchSlice(s))
}))
t.Run("fails at end of input", rapid.MakeCheck(func(t *rapid.T) {
s := rapid.SliceOfN(rapid.Byte(), 1, -1).Draw(t, "s")
inputLen := rapid.IntRange(0, len(s)-1).Draw(t, "inputLen")
input := s[:inputLen]
assertParseFails(t, input, gigaparsec.Slice(s))
assertParseFails(t, input, gigaparsec.MatchSlice(s))
}))
t.Run("fails when read fails", rapid.MakeCheck(func(t *rapid.T) {
expectedErr := generator.Error().Draw(t, "expectedErr")
c := ptest.ErrCursor[byte](expectedErr)
s := rapid.SliceOfN(rapid.Byte(), 0, 100).Draw(t, "s")
result, err := gigaparsec.Slice(s)(gigaparsec.MakeState(c))
result, err := gigaparsec.MatchSlice(s)(gigaparsec.MakeState(c))
failed, _, _ := result.Failed()
test.ErrorIs(t, err, expectedErr)
test.True(t, failed)
@ -66,7 +66,7 @@ func TestSlice(t *testing.T) {
s := input[:sLen]
start := gigaparsec.MakeState(cursor.NewSlice(input))
result, err := gigaparsec.Slice(s)(start)
result, err := gigaparsec.MatchSlice(s)(start)
must.NoError(t, err)
succeeded, consumed, value, next, _ := result.Succeeded()
test.True(t, succeeded)
@ -89,6 +89,12 @@ func TestBind(t *testing.T) {
// s := rapid.SliceOfN(rapid.Byte(), 0, 100)
t.Errorf("TODO")
}))
/*
If the first parser fails, then consumption depends on the first parser.
If the first parser succeeds, then bound parser consumes iff either parser succeeded.
For BindN:
If all parsers before i succeed, bound parser consumes if any parser before i consumed.
*/
t.Run("consumption on success", rapid.MakeCheck(func(t *rapid.T) {
makeParser := func(consume bool) gigaparsec.Parser[byte, struct{}] {
return func(s gigaparsec.State[byte]) (gigaparsec.Result[byte, struct{}], error) {