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lexer_test.go
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lexer_test.go
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package codf // import "go.spiff.io/codf"
import (
"bytes"
"fmt"
"io"
"math/big"
"os"
"regexp"
"strconv"
"strings"
"testing"
"time"
)
func TestInvalidTokenName(t *testing.T) {
const want = "invalid"
const tok32 = TokenKind(0xffffffff)
defer setlogf(t)()
if got := tok32.String(); got != want {
t.Errorf("Token(%08x) = %q; want %q", tok32, got, want)
}
}
func regexCase(rx string) tokenCase {
return tokenCase{
Token: Token{
Kind: TRegexp,
Raw: []byte("#/" + strings.Replace(rx, "/", "\\/", -1) + "/"),
Value: regexp.MustCompile(rx),
},
}
}
func durCase(text string) tokenCase {
d, err := time.ParseDuration(text)
if err != nil {
panic("error creating duration: " + err.Error())
}
return tokenCase{
Token: Token{
Kind: TDuration,
Raw: []byte(text),
Value: d,
},
}
}
func floatCase(text string, precision uint) tokenCase {
if precision <= 0 {
precision = DefaultPrecision
}
var f big.Float
f.SetPrec(precision)
if _, ok := f.SetString(text); !ok {
panic("error creating float " + text)
}
return tokenCase{
Token: Token{
Kind: TFloat,
Raw: []byte(text),
Value: &f,
},
}
}
func baseCase(val int64, base int) tokenCase {
t := val
neg := ""
if t < 0 {
neg = "-"
t = -t
}
formatted := fmt.Sprintf("%s%d#%s", neg, base, strconv.FormatInt(t, base))
return intCase(val, formatted)
}
func intCase(val int64, raw string) tokenCase {
kind := TInteger
switch s := strings.ToLower(strings.TrimLeft(raw, "-+")); {
case strings.HasPrefix(s, "0x"):
kind = THex
case strings.HasPrefix(s, "0b"):
kind = TBinary
case len(s) > 1 && strings.HasPrefix(s, "0"):
kind = TOctal
case strings.Contains(s, "#"):
kind = TBaseInt
}
return tokenCase{
Token: Token{
Kind: kind,
Raw: []byte(raw),
Value: big.NewInt(val),
},
}
}
func wordCase(word string) tokenCase {
return tokenCase{
Token: Token{
Kind: TWord,
Raw: []byte(word),
Value: word,
},
}
}
func commentCase(text string) tokenCase {
return tokenCase{
Token: Token{
Kind: TComment,
Raw: []byte("//" + text),
Value: text,
},
}
}
func quoteCase(str string) tokenCase {
return tokenCase{
Token: Token{
Kind: TString,
Raw: []byte(`"` + str + `"`),
Value: str,
},
}
}
func compareValue(l, r interface{}) bool {
switch ll := l.(type) {
case nil:
// Don't compare -- nil isn't a value and only used for punctuation.
return true
case bool:
rr, ok := r.(bool)
return ok && ll == rr
case string:
rr, ok := r.(string)
return ok && ll == rr
case time.Duration:
rr, ok := r.(time.Duration)
return ok && ll == rr
case *big.Int:
rr, ok := r.(*big.Int)
return ok && ll.Cmp(rr) == 0
case *big.Float:
rr, ok := r.(*big.Float)
return ok && ll.Cmp(rr) == 0
case *big.Rat:
rr, ok := r.(*big.Rat)
return ok && ll.Cmp(rr) == 0
case *regexp.Regexp:
rr, ok := r.(*regexp.Regexp)
return ok && ll.String() == rr.String()
default:
// Not a known type -- can't be valid
return false
}
}
func reader(s string) *bytes.Buffer {
return bytes.NewBuffer([]byte(s))
}
func requireEOF(t *testing.T, b *bytes.Buffer) {
if b.Len() > 0 {
t.Fatalf("expected EOF; %d bytes remaining", b.Len())
}
}
func checkToken(t *testing.T, prefix string, got, want Token) {
if got.Kind != want.Kind {
t.Errorf("%stok.Kind = %v; want %v", prefix, got.Kind, want.Kind)
}
if want.Start.Column > 0 && got.Start != want.Start {
t.Errorf("%stok.Start = %#v; want %#v", prefix, got.Start, want.Start)
}
if want.End.Column > 0 && got.End != want.End {
t.Errorf("%stok.End = %#v; want %#v", prefix, got.End, want.End)
}
if want.Raw == nil {
// Skip check
} else if want.Raw != nil && got.Raw == nil {
t.Errorf("%stok.Raw = nil; want %q", prefix, want.Raw)
} else if !bytes.Equal(got.Raw, want.Raw) {
t.Errorf("%stok.Raw = %q; want %q", prefix, got.Raw, want.Raw)
}
if !compareValue(want.Value, got.Value) {
t.Errorf("%stok.Value = %T(%#v); want %T(%#v)", prefix,
got.Value, got.Value,
want.Value, want.Value)
}
if t.Failed() {
t.Logf("%stok.Raw = %q", prefix, got.Raw)
}
}
type tokenCase struct {
Token
Err bool
}
// Common punctuation tokens
var (
_error = tokenCase{Err: true}
_ws = tokenCase{Token: Token{Kind: TWhitespace}}
_eof = tokenCase{Token: Token{Kind: TEOF}}
_semicolon = tokenCase{Token: Token{Kind: TSemicolon}}
_curlopen = tokenCase{Token: Token{Kind: TCurlOpen}}
_curlclose = tokenCase{Token: Token{Kind: TCurlClose}}
_bracketopen = tokenCase{Token: Token{Kind: TBracketOpen}}
_bracketclose = tokenCase{Token: Token{Kind: TBracketClose}}
_mapopen = tokenCase{Token: Token{Kind: TMapOpen}}
_comment = tokenCase{Token: Token{Kind: TComment}}
)
type tokenSeq []tokenCase
func (seq tokenSeq) RunFlags(t *testing.T, flags LexerFlag, input string) {
buf := reader(input)
lex := NewLexer(buf)
lex.Flags = flags
lex.Name = "test.codf"
if seq.RunWithLexer(t, lex) {
requireEOF(t, buf)
}
}
func (seq tokenSeq) Run(t *testing.T, input string) {
seq.RunFlags(t, LexDefaultFlags, input)
}
func (seq tokenSeq) RunWithLexer(t *testing.T, lex *Lexer) bool {
for i, want := range seq {
prefix := fmt.Sprintf("%d: ", i+1)
tok, err := lex.ReadToken()
if want.Err && err == nil {
t.Errorf("%sgot error = nil; want error", prefix)
} else if !want.Err && err != nil {
t.Errorf("%sgot error = %v; want %v", prefix, err, want.Kind)
}
if want.Err && err != nil {
return false
}
checkToken(t, prefix, tok, want.Token)
if t.Failed() {
return false
}
}
return true
}
type tokenSeqTest struct {
Name string
Input string
Seq tokenSeq
}
func (tt *tokenSeqTest) Run(t *testing.T) {
t.Run(tt.Name, func(t *testing.T) {
defer setlogf(t)()
tt.Seq.Run(t, tt.Input)
})
}
func TestComment(t *testing.T) {
defer setlogf(t)()
tokenSeq{
{Token: Token{Kind: TComment, Raw: []byte("//")}},
{Token: Token{Kind: TWhitespace, Raw: []byte("\n")}},
{Token: Token{Kind: TComment, Raw: []byte("// foo bar baz")}},
_eof,
}.Run(t, "//\n// foo bar baz")
}
func TestBareword(t *testing.T) {
defer setlogf(t)()
tokenSeq{
{Token: Token{
Kind: TWhitespace,
Start: Location{Name: "test.codf", Offset: 0, Line: 1, Column: 1},
End: Location{Name: "test.codf", Offset: 1, Line: 1, Column: 2},
}},
{Token: Token{
Kind: TWord,
Raw: []byte(".foo$bar#baz=quux"),
Start: Location{Name: "test.codf", Offset: 1, Line: 1, Column: 2},
End: Location{Name: "test.codf", Offset: 18, Line: 1, Column: 19},
Value: ".foo$bar#baz=quux",
}},
_ws,
{Token: Token{
Kind: TWord,
Raw: []byte("10.0.0.0/8"),
Start: Location{Name: "test.codf", Offset: 20, Line: 2, Column: 2},
End: Location{Name: "test.codf", Offset: 30, Line: 2, Column: 12},
Value: "10.0.0.0/8",
}},
_ws,
{Token: Token{
Kind: TWord,
Raw: []byte("#"),
Start: Location{Name: "test.codf", Offset: 31, Line: 2, Column: 13},
End: Location{Name: "test.codf", Offset: 32, Line: 2, Column: 14},
Value: "#",
}},
_ws,
{Token: Token{
Kind: TWord,
Raw: []byte("#f"),
Start: Location{Name: "test.codf", Offset: 33, Line: 2, Column: 15},
End: Location{Name: "test.codf", Offset: 35, Line: 2, Column: 17},
Value: "#f",
}},
_ws,
{Token: Token{
Kind: TWord,
Raw: []byte("+"),
Start: Location{Name: "test.codf", Offset: 36, Line: 2, Column: 18},
End: Location{Name: "test.codf", Offset: 37, Line: 2, Column: 19},
Value: "+",
}},
_ws,
{Token: Token{
Kind: TWord,
Raw: []byte("-"),
Start: Location{Name: "test.codf", Offset: 38, Line: 2, Column: 20},
End: Location{Name: "test.codf", Offset: 39, Line: 2, Column: 21},
Value: "-",
}},
_semicolon,
_ws,
{Token: Token{Kind: TComment, Raw: []byte("// foo"), Value: " foo"}},
_ws, wordCase("+f"),
_ws, wordCase("1/1f"),
_ws, wordCase("1nq"),
_ws, wordCase("1s1.s"),
_ws, wordCase("#foo"),
_ws, wordCase("/foo/"),
_ws, wordCase("#"),
quoteCase("foo"),
_eof,
}.Run(t, "\t.foo$bar#baz=quux\n"+
"\t10.0.0.0/8 # #f + -; // foo\n"+
"\n"+
"+f 1/1f 1nq 1s1.s #foo /foo/ #\"foo\"",
)
}
func TestWhitespace(t *testing.T) {
defer setlogf(t)()
tokenSeq{
{
Token: Token{
Start: Location{Name: "test.codf", Column: 1, Line: 1, Offset: 0},
End: Location{Name: "test.codf", Column: 3, Line: 3, Offset: 6},
Kind: TWhitespace,
},
},
}.Run(t, " \n\r\n\t ")
}
type flagTest struct {
Flags LexerFlag
Seq string
On tokenSeq
Off tokenSeq
}
func (f flagTest) Test(t *testing.T) {
t.Run("On", func(t *testing.T) {
defer setlogf(t)()
f.On.RunFlags(t, f.Flags, f.Seq)
})
t.Run("Off", func(t *testing.T) {
defer setlogf(t)()
f.Off.RunFlags(t, LexDefaultFlags, f.Seq)
})
}
func (f flagTest) WithFlags(flag LexerFlag) flagTest {
f.Flags = flag
return f
}
func TestLexNoRegexpsFlag(t *testing.T) {
t.Run("Regexp", flagTest{
Flags: LexNoRegexps,
Seq: `#/r x/`,
On: tokenSeq{wordCase("#/r"), _ws, wordCase("x/"), _eof},
Off: tokenSeq{regexCase("r x"), _eof},
}.Test)
}
func TestLexNoBooleansFlag(t *testing.T) {
flagTest{
Flags: LexNoBools,
Seq: `TRUE true Yes FALSE`,
On: tokenSeq{
{Token: Token{Kind: TWord, Raw: []byte("TRUE"), Value: "TRUE"}},
_ws, {Token: Token{Kind: TWord, Raw: []byte("true"), Value: "true"}},
_ws, {Token: Token{Kind: TWord, Raw: []byte("Yes"), Value: "Yes"}},
_ws, {Token: Token{Kind: TWord, Raw: []byte("FALSE"), Value: "FALSE"}},
_eof,
},
Off: tokenSeq{
{Token: Token{Kind: TBoolean, Raw: []byte("TRUE"), Value: true}},
_ws, {Token: Token{Kind: TBoolean, Raw: []byte("true"), Value: true}},
_ws, {Token: Token{Kind: TBoolean, Raw: []byte("Yes"), Value: true}},
_ws, {Token: Token{Kind: TBoolean, Raw: []byte("FALSE"), Value: false}},
_eof,
},
}.Test(t)
}
func TestLexNoDurationsFlag(t *testing.T) {
durations := flagTest{
Flags: LexNoDurations,
Seq: `
-0s -1ns -0ns -0.0s
-1h234m7s -1h -60m
-0.05s -500ms
-0.5ms -500us -500μs
+0s +1ns +0ns +0.0s
+1h234m7s +1h +60m
+0.05s +500ms
+0.5ms +500us +500μs
0s 1ns 0ns 0.0s
1h234m7s 1h 60m
0.05s 500ms
0.5ms 500us 500μs
1h0.25m
1h0m0.05s
`,
On: tokenSeq{
// Negative sign
_ws, wordCase("-0s"),
_ws, wordCase("-1ns"),
_ws, wordCase("-0ns"),
_ws, wordCase("-0.0s"),
_ws, wordCase("-1h234m7s"),
_ws, wordCase("-1h"),
_ws, wordCase("-60m"),
_ws, wordCase("-0.05s"),
_ws, wordCase("-500ms"),
_ws, wordCase("-0.5ms"),
_ws, wordCase("-500us"),
_ws, wordCase("-500μs"),
// Positive sign
_ws, wordCase("+0s"),
_ws, wordCase("+1ns"),
_ws, wordCase("+0ns"),
_ws, wordCase("+0.0s"),
_ws, wordCase("+1h234m7s"),
_ws, wordCase("+1h"),
_ws, wordCase("+60m"),
_ws, wordCase("+0.05s"),
_ws, wordCase("+500ms"),
_ws, wordCase("+0.5ms"),
_ws, wordCase("+500us"),
_ws, wordCase("+500μs"),
// No sign
_ws, wordCase("0s"),
_ws, wordCase("1ns"),
_ws, wordCase("0ns"),
_ws, wordCase("0.0s"),
_ws, wordCase("1h234m7s"),
_ws, wordCase("1h"),
_ws, wordCase("60m"),
_ws, wordCase("0.05s"),
_ws, wordCase("500ms"),
_ws, wordCase("0.5ms"),
_ws, wordCase("500us"),
_ws, wordCase("500μs"),
_ws, wordCase("1h0.25m"),
_ws, wordCase("1h0m0.05s"),
_ws, _eof,
},
Off: tokenSeq{
// Negative sign
_ws, durCase("-0s"),
_ws, durCase("-1ns"),
_ws, durCase("-0ns"),
_ws, durCase("-0.0s"),
_ws, durCase("-1h234m7s"),
_ws, durCase("-1h"),
_ws, durCase("-60m"),
_ws, durCase("-0.05s"),
_ws, durCase("-500ms"),
_ws, durCase("-0.5ms"),
_ws, durCase("-500us"),
_ws, durCase("-500μs"),
// Positive sign
_ws, durCase("+0s"),
_ws, durCase("+1ns"),
_ws, durCase("+0ns"),
_ws, durCase("+0.0s"),
_ws, durCase("+1h234m7s"),
_ws, durCase("+1h"),
_ws, durCase("+60m"),
_ws, durCase("+0.05s"),
_ws, durCase("+500ms"),
_ws, durCase("+0.5ms"),
_ws, durCase("+500us"),
_ws, durCase("+500μs"),
// No sign
_ws, durCase("0s"),
_ws, durCase("1ns"),
_ws, durCase("0ns"),
_ws, durCase("0.0s"),
_ws, durCase("1h234m7s"),
_ws, durCase("1h"),
_ws, durCase("60m"),
_ws, durCase("0.05s"),
_ws, durCase("500ms"),
_ws, durCase("0.5ms"),
_ws, durCase("500us"),
_ws, durCase("500μs"),
_ws, durCase("1h0.25m"),
_ws, durCase("1h0m0.05s"),
_ws, _eof,
},
}
durations.Test(t)
t.Run("NoNumbers-Durations", durations.WithFlags(LexNoNumbers).Test)
}
func TestLexNoRationalsFlag(t *testing.T) {
var (
rZero = big.NewRat(0, 1)
rNeg = big.NewRat(-3, 4)
rPos = big.NewRat(3, 4)
)
rationals := flagTest{
Flags: LexNoRationals,
Seq: `
0/100 -0/200 -0/1 0/1
-3/4 -6/8 -75/100
+3/4 +6/8 +75/100
3/4 6/8 75/100
`,
On: tokenSeq{
// Zero
_ws, wordCase("0/100"),
_ws, wordCase("-0/200"),
_ws, wordCase("-0/1"),
_ws, wordCase("0/1"),
// Negative sign
_ws, wordCase("-3/4"),
_ws, wordCase("-6/8"),
_ws, wordCase("-75/100"),
// Positive sign
_ws, wordCase("+3/4"),
_ws, wordCase("+6/8"),
_ws, wordCase("+75/100"),
// No sign
_ws, wordCase("3/4"),
_ws, wordCase("6/8"),
_ws, wordCase("75/100"),
_ws, _eof,
},
Off: tokenSeq{
// Zero
_ws, {Token: Token{Kind: TRational, Value: rZero, Raw: []byte("0/100")}},
_ws, {Token: Token{Kind: TRational, Value: rZero, Raw: []byte("-0/200")}},
_ws, {Token: Token{Kind: TRational, Value: rZero, Raw: []byte("-0/1")}},
_ws, {Token: Token{Kind: TRational, Value: rZero, Raw: []byte("0/1")}},
// Negative sign
_ws, {Token: Token{Kind: TRational, Value: rNeg, Raw: []byte("-3/4")}},
_ws, {Token: Token{Kind: TRational, Value: rNeg, Raw: []byte("-6/8")}},
_ws, {Token: Token{Kind: TRational, Value: rNeg, Raw: []byte("-75/100")}},
// Positive sign
_ws, {Token: Token{Kind: TRational, Value: rPos, Raw: []byte("+3/4")}},
_ws, {Token: Token{Kind: TRational, Value: rPos, Raw: []byte("+6/8")}},
_ws, {Token: Token{Kind: TRational, Value: rPos, Raw: []byte("+75/100")}},
// No sign
_ws, {Token: Token{Kind: TRational, Value: rPos, Raw: []byte("3/4")}},
_ws, {Token: Token{Kind: TRational, Value: rPos, Raw: []byte("6/8")}},
_ws, {Token: Token{Kind: TRational, Value: rPos, Raw: []byte("75/100")}},
_ws, _eof,
},
}
rationals.Test(t)
t.Run("NoNumbers-Rationals", rationals.WithFlags(LexNoNumbers).Test)
}
func TestLexNoFloatsFlag(t *testing.T) {
floats := flagTest{
Flags: LexNoFloats,
Seq: `
-0.0 -0.5 -0.0e0 -0.0E0
-1.2345 -12345e-4 -1.2345e4 -1.2345e+4
+0.0 +0.5 +0.0e0 +0.0E0
+1.2345 +12345E-4 +1.2345E4 +1.2345E+4
[0.0] #{k 0.5} 0e123 0.0e0 0.0E0
1.2345 12345e-4 1.2345e4 1.2345e+4
`,
On: tokenSeq{
// Negative sign
_ws, wordCase("-0.0"),
_ws, wordCase("-0.5"),
_ws, wordCase("-0.0e0"),
_ws, wordCase("-0.0E0"),
_ws, wordCase("-1.2345"),
_ws, wordCase("-12345e-4"),
_ws, wordCase("-1.2345e4"),
_ws, wordCase("-1.2345e+4"),
// Positive sign
_ws, wordCase("+0.0"),
_ws, wordCase("+0.5"),
_ws, wordCase("+0.0e0"),
_ws, wordCase("+0.0E0"),
_ws, wordCase("+1.2345"),
_ws, wordCase("+12345E-4"),
_ws, wordCase("+1.2345E4"),
_ws, wordCase("+1.2345E+4"),
// No sign
_ws, _bracketopen, wordCase("0.0"), _bracketclose,
_ws, _mapopen,
{Token: Token{Kind: TWord, Value: "k"}},
_ws, wordCase("0.5"),
_curlclose,
_ws, wordCase("0e123"),
_ws, wordCase("0.0e0"),
_ws, wordCase("0.0E0"),
_ws, wordCase("1.2345"),
_ws, wordCase("12345e-4"),
_ws, wordCase("1.2345e4"),
_ws, wordCase("1.2345e+4"),
_ws, _eof,
},
Off: tokenSeq{
// Negative sign
_ws, floatCase("-0.0", 0),
_ws, floatCase("-0.5", 0),
_ws, floatCase("-0.0e0", 0),
_ws, floatCase("-0.0E0", 0),
_ws, floatCase("-1.2345", 0),
_ws, floatCase("-12345e-4", 0),
_ws, floatCase("-1.2345e4", 0),
_ws, floatCase("-1.2345e+4", 0),
// Positive sign
_ws, floatCase("+0.0", 0),
_ws, floatCase("+0.5", 0),
_ws, floatCase("+0.0e0", 0),
_ws, floatCase("+0.0E0", 0),
_ws, floatCase("+1.2345", 0),
_ws, floatCase("+12345E-4", 0),
_ws, floatCase("+1.2345E4", 0),
_ws, floatCase("+1.2345E+4", 0),
// No sign
_ws, _bracketopen, floatCase("0.0", 0), _bracketclose,
_ws, _mapopen,
{Token: Token{Kind: TWord, Value: "k"}},
_ws, floatCase("0.5", 0),
_curlclose,
_ws, floatCase("0e123", 0),
_ws, floatCase("0.0e0", 0),
_ws, floatCase("0.0E0", 0),
_ws, floatCase("1.2345", 0),
_ws, floatCase("12345e-4", 0),
_ws, floatCase("1.2345e4", 0),
_ws, floatCase("1.2345e+4", 0),
_ws, _eof,
},
}
floats.Test(t)
t.Run("NoNumbers-Floats", floats.WithFlags(LexNoNumbers).Test)
}
func TestLexNoBaseIntsFlag(t *testing.T) {
baseInts := flagTest{
Seq: `
0xff 0XFF
0b1111 0B1111
0600 0000 -0600
3#210 -3#210
`,
Flags: LexNoBaseInts,
On: tokenSeq{
_ws, wordCase("0xff"),
_ws, wordCase("0XFF"),
_ws, wordCase("0b1111"),
_ws, wordCase("0B1111"),
_ws, wordCase("0600"),
_ws, wordCase("0000"),
_ws, wordCase("-0600"),
_ws, wordCase("3#210"),
_ws, wordCase("-3#210"),
_ws, _eof,
},
Off: tokenSeq{
_ws, intCase(255, "0xff"),
_ws, intCase(255, "0XFF"),
_ws, intCase(15, "0b1111"),
_ws, intCase(15, "0B1111"),
_ws, intCase(384, "0600"),
_ws, intCase(0, "0000"),
_ws, intCase(-384, "-0600"),
_ws, intCase(21, "3#210"),
_ws, intCase(-21, "-3#210"),
_ws, _eof,
},
}
baseInts.Test(t)
t.Run("NoNumbers-BaseInt", baseInts.WithFlags(LexNoNumbers).Test)
}
func TestStatement(t *testing.T) {
defer setlogf(t)()
tokenSeq{
_ws, {Token: Token{Kind: TWord, Raw: []byte("stmt"), Value: "stmt"}},
_ws, {Token: Token{Kind: TInteger, Raw: []byte("-1234"), Value: big.NewInt(-1234)}},
_ws, {Token: Token{Kind: TOctal, Raw: []byte("+0600"), Value: big.NewInt(0600)}},
_ws, {Token: Token{Kind: THex, Raw: []byte("-0xf"), Value: big.NewInt(-15)}},
_ws, {Token: Token{Kind: THex, Raw: []byte("0x12f"), Value: big.NewInt(303)}},
_ws, wordCase("${FOO:-${BAZ:-Default}}"),
_semicolon,
_ws, wordCase("stmt/2"), _semicolon,
_ws, wordCase("stmt{}"), _semicolon,
_ws, wordCase("invalid"), _curlclose,
_ws, wordCase("sect"), _ws, _curlopen, _curlclose,
_ws, wordCase("a"), _semicolon,
_ws, wordCase("b{}"),
_ws, wordCase("c//foo"),
_ws, commentCase("foo"),
_ws, commentCase(" foo bar baz"),
_ws, wordCase("#[foo]"),
_ws, wordCase("$[foo]"),
_ws, wordCase("${foo}"),
_ws, wordCase("${{foo}}"),
_ws, wordCase("${[foo}]"),
_ws, wordCase("${foo}"), _curlclose,
_ws, wordCase("${foo]"), _bracketclose,
_ws, _semicolon, _semicolon,
_ws, _eof,
}.Run(t, `
stmt -1234 +0600 -0xf 0x12f ${FOO:-${BAZ:-Default}};
stmt/2;
stmt{};
invalid}
sect {}
a;
b{}
c//foo //foo
// foo bar baz
#[foo] $[foo] ${foo} ${{foo}} ${[foo}] ${foo}} ${foo]]
;;
`)
}
func TestInvalidUTF8(t *testing.T) {
defer setlogf(t)()
tokenSeq{_error}.Run(t, "\xff")
}
func TestStatementInvalid(t *testing.T) {
defer setlogf(t)()
tokenSeq{
{Token: Token{Kind: TWord, Raw: []byte("a"), Value: "a"}},
_eof,
}.Run(t, `a`)
tokenSeq{
{Token: Token{Kind: TWord, Raw: []byte("a"), Value: "a"}},
_error,
}.Run(t, "a\x00")
}
func TestRegexp(t *testing.T) {
defer setlogf(t)()
regex := regexp.MustCompile
tokenSeq{
{Token: Token{Kind: TWord, Raw: []byte("stmt"), Value: "stmt"}},
_ws, {Token: Token{Kind: TRegexp, Raw: []byte("#/foo\\/bar\n/"), Value: regex("foo/bar\n")}},
_ws, {Token: Token{Kind: TRegexp, Raw: []byte("#//"), Value: regex("")}},
_ws, {Token: Token{Kind: TRegexp, Raw: []byte("#/\\./"), Value: regex("\\.")}},
_semicolon,
_eof,
}.Run(t, "stmt #/foo\\/bar\n/ #// #/\\./;")
// Test that regexp lexing is disabled
tokenSeq{
wordCase("#//"), _ws,
wordCase("#/foo"), _ws,
wordCase("bar/"),
}.RunFlags(t, LexNoRegexps, "#// #/foo bar/")
// Fail on EOF at points in regexp parsing
// EOF in regexp (start)
tokenSeq{
{Token: Token{Kind: TWord, Raw: []byte("stmt"), Value: "stmt"}},
_ws, _error,
}.Run(t, "stmt #/")
// EOF in regexp (middle)
tokenSeq{
{Token: Token{Kind: TWord, Raw: []byte("stmt"), Value: "stmt"}},
_ws, _error,
}.Run(t, "stmt #/foobar")
}
func TestString(t *testing.T) {
defer setlogf(t)()
tokenSeq{
{Token: Token{Kind: TWord, Raw: []byte("stmt"), Value: "stmt"}},
_ws, {Token: Token{Kind: TString, Raw: []byte(`""`), Value: ""}},
_ws, {Token: Token{Kind: TString, Raw: []byte(`"simple string"`), Value: "simple string"}},
_ws, {Token: Token{Kind: TString, Raw: []byte(`"\a\b\f\n\r\t\v\\\""`), Value: "\a\b\f\n\r\t\v\\\""}},
_ws, {Token: Token{Kind: TString, Raw: []byte(`"\123\xff\u7fff\U00001234"`), Value: "\123\xff\u7fff\U00001234"}},
_ws, {Token: Token{Kind: TString, Raw: []byte(`"\xFF"`), Value: "\xff"}},
_ws,
{Token: Token{Kind: TWord, Raw: []byte(`a`), Value: "a"}},
{Token: Token{Kind: TString, Raw: []byte(`"b"`), Value: "b"}},
{Token: Token{Kind: TWord, Raw: []byte(`c`), Value: "c"}},
_ws, {Token: Token{Kind: TRawString, Raw: []byte("`\"foo\x00bar\"`"), Value: "\"foo\x00bar\""}},
_ws, {Token: Token{Kind: TRawString, Raw: []byte("```foo\x00bar```"), Value: "`foo\x00bar`"}},
_ws, {Token: Token{Kind: TRawString, Raw: []byte("`foo \\bar `` \\\\ baz\\```"), Value: "foo \\bar ` \\\\ baz\\`"}},
_ws, {Token: Token{Kind: TRawString, Raw: []byte("`\\`"), Value: `\`}},
_ws, {Token: Token{Kind: TRawString, Raw: []byte("````"), Value: "`"}},
_ws, {Token: Token{Kind: TRawString, Raw: []byte("``"), Value: ""}},
_ws, _semicolon,
_eof,
}.Run(t,
`stmt ""
"simple string"
"\a\b\f\n\r\t\v\\\""
"\123\xff\u7fff\U00001234"
"\xFF"
a"b"c
`+"`\"foo\x00bar\"`"+`
`+"```foo\x00bar```"+`
`+"`foo \\bar `` \\\\ baz\\```"+`
`+"`\\`"+`
`+"````"+`
`+"``"+`
;`)
}
func TestBaseInteger(t *testing.T) {
defer setlogf(t)()
num := big.NewInt(-12345)
pos := big.NewInt(12345)
for base := 2; base <= 36; base++ {
basenum := pos.Text(base)
lit := fmt.Sprintf("-%d#%s", base, basenum)
stmt := "stmt " + lit + " foo 0;"
tok := Token{
Kind: TBaseInt,
Raw: []byte(lit),
Value: num,
}
(&tokenSeqTest{
Name: "Base-" + strconv.Itoa(base),
Input: stmt,
Seq: tokenSeq{
{Token: Token{Kind: TWord, Value: "stmt"}},
_ws, {Token: tok},
_ws, {Token: Token{Kind: TWord, Value: "foo"}},
_ws, {Token: Token{Kind: TInteger, Value: big.NewInt(0)}},
_semicolon,
_eof,
},
}).Run(t)
}
// Invalid things -- these become words
badtext := []string{
`0#0`,
`1#0`,
`37#zz`,
}
for _, c := range badtext {
want := strings.TrimRight(c, ";")
seq := tokenSeq{
{Token: Token{Kind: TWord, Raw: []byte(want), Value: want}},
}
t.Run(c, func(t *testing.T) {
defer setlogf(t)()
seq.Run(t, c)
})
}
}
func TestInvalidNumber(t *testing.T) {
tokenSeq{_error}.Run(t, "4#\x00")
tokenSeq{_error}.Run(t, "1e0\x00")
}
func TestInvalidStrings(t *testing.T) {
defer setlogf(t)()
invalid := tokenSeq{
{Token: Token{
Kind: TWord,
Raw: []byte("stmt"),
Value: "stmt",
}},
_ws, _error,
}
cases := []tokenSeqTest{
{Name: "Quote/EOF", Input: `stmt "`},
{Name: "Quote/EOF", Input: `stmt "after`},
{Name: "Quote/Octal-Invalid", Input: `stmt "\60z";`},
{Name: "Quote/Octal-Invalid", Input: `stmt "\608";`},
{Name: "Quote/Octal-EOF", Input: `stmt "\`},
{Name: "Quote/Octal-EOF", Input: `stmt "\7`},
{Name: "Quote/Octal-EOF", Input: `stmt "\60`},
{Name: "Quote/Hex-Invalid", Input: `stmt "\xz";`},
{Name: "Quote/Hex-Invalid", Input: `stmt "\xfz";`},
{Name: "Quote/Hex-EOF", Input: `stmt "\x`},
{Name: "Quote/Hex-EOF", Input: `stmt "\xf`},
{Name: "Quote/Uni16-Invalid", Input: `stmt "\uff";`},
{Name: "Quote/Uni16-Invalid", Input: `stmt "\uffxx";`},
{Name: "Quote/Uni16-EOF", Input: `stmt "\uf`},
{Name: "Quote/Uni32-Invalid", Input: `stmt "\U12345";`},
{Name: "Quote/Uni32-Invalid", Input: `stmt "\U12345xx";`},
{Name: "Quote/Uni32-EOF", Input: `stmt "\U123456`},
{Name: "Quote/BadEscape", Input: `stmt "\z";`},
{Name: "Quote/BadUTF8", Input: "stmt \"\xff"},
// Raw strings -- only really affected by EOF
{Name: "Raw/EOF", Input: "stmt `"},
{Name: "Raw/EOF", Input: "stmt `after"},
{Name: "Raw/EOF", Input: "stmt ```"},
{Name: "Raw/EOF", Input: "stmt ```after"},
{Name: "Raw/BadUTF8", Input: "stmt `\xff"},
}
for i, c := range cases {
c.Name = fmt.Sprint(c.Name, "-", i+1)
if c.Seq == nil {
c.Seq = invalid
}
c.Run(t)
}
}
func TestIntegers(t *testing.T) {
defer setlogf(t)()
neg := big.NewInt(-1234)
pos := big.NewInt(1234)
_stmt := tokenCase{Token: Token{Kind: TWord, Raw: []byte("stmt"), Value: "stmt"}}
tokenSeq{
_stmt,
// Negative sign
_ws, {Token: Token{Kind: TBinary, Value: neg, Raw: []byte("-0b10011010010")}},
_ws, {Token: Token{Kind: TBinary, Value: neg, Raw: []byte("-0B10011010010")}},
_ws, {Token: Token{Kind: TBaseInt, Value: neg, Raw: []byte("-2#10011010010")}},
_ws, {Token: Token{Kind: TOctal, Value: neg, Raw: []byte("-02322")}},
_ws, {Token: Token{Kind: TBaseInt, Value: neg, Raw: []byte("-8#2322")}},
_ws, {Token: Token{Kind: TInteger, Value: neg, Raw: []byte("-1234")}},
_ws, {Token: Token{Kind: TBaseInt, Value: neg, Raw: []byte("-10#00001234")}},
_ws, {Token: Token{Kind: THex, Value: neg, Raw: []byte("-0x4d2")}},
_ws, {Token: Token{Kind: THex, Value: neg, Raw: []byte("-0X4D2")}},
_ws, {Token: Token{Kind: TBaseInt, Value: neg, Raw: []byte("-16#4D2")}},
_ws, {Token: Token{Kind: TBaseInt, Value: neg, Raw: []byte("-36#ya")}},
// Positive sign
_ws, {Token: Token{Kind: TBinary, Value: pos, Raw: []byte("+0b10011010010")}},
_ws, {Token: Token{Kind: TBinary, Value: pos, Raw: []byte("+0B10011010010")}},
_ws, {Token: Token{Kind: TBaseInt, Value: pos, Raw: []byte("+2#10011010010")}},
_ws, {Token: Token{Kind: TOctal, Value: pos, Raw: []byte("+02322")}},
_ws, {Token: Token{Kind: TBaseInt, Value: pos, Raw: []byte("+8#2322")}},
_ws, {Token: Token{Kind: TInteger, Value: pos, Raw: []byte("+1234")}},
_ws, {Token: Token{Kind: TBaseInt, Value: pos, Raw: []byte("+10#1234")}},
_ws, {Token: Token{Kind: THex, Value: pos, Raw: []byte("+0x4d2")}},
_ws, {Token: Token{Kind: THex, Value: pos, Raw: []byte("+0X4D2")}},
_ws, {Token: Token{Kind: TBaseInt, Value: pos, Raw: []byte("+16#4D2")}},
_ws, {Token: Token{Kind: TBaseInt, Value: pos, Raw: []byte("+36#ya")}},
// No sign
_ws, {Token: Token{Kind: TBinary, Value: pos, Raw: []byte("0b10011010010")}},
_ws, {Token: Token{Kind: TBinary, Value: pos, Raw: []byte("0B10011010010")}},
_ws, {Token: Token{Kind: TBaseInt, Value: pos, Raw: []byte("2#10011010010")}},
_ws, {Token: Token{Kind: TOctal, Value: pos, Raw: []byte("02322")}},
_ws, {Token: Token{Kind: TBaseInt, Value: pos, Raw: []byte("8#2322")}},
_ws, {Token: Token{Kind: TInteger, Value: pos, Raw: []byte("1234")}},
_ws, {Token: Token{Kind: TBaseInt, Value: pos, Raw: []byte("10#1234")}},
_ws, {Token: Token{Kind: THex, Value: pos, Raw: []byte("0x4d2")}},
_ws, {Token: Token{Kind: THex, Value: pos, Raw: []byte("0X4D2")}},
_ws, {Token: Token{Kind: TBaseInt, Value: pos, Raw: []byte("16#4D2")}},
_ws, {Token: Token{Kind: TBaseInt, Value: pos, Raw: []byte("36#ya")}},
_ws, _semicolon,
_eof,
}.Run(t, `stmt
-0b10011010010
-0B10011010010
-2#10011010010
-02322
-8#2322