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Diffstat (limited to 'src/go/printer/testdata/expressions.raw')
| -rw-r--r-- | src/go/printer/testdata/expressions.raw | 743 |
1 files changed, 743 insertions, 0 deletions
diff --git a/src/go/printer/testdata/expressions.raw b/src/go/printer/testdata/expressions.raw new file mode 100644 index 0000000..058fded --- /dev/null +++ b/src/go/printer/testdata/expressions.raw @@ -0,0 +1,743 @@ +// Copyright 2009 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package expressions + +type T struct { + x, y, z int +} + +var ( + a, b, c, d, e int + under_bar int + longIdentifier1, longIdentifier2, longIdentifier3 int + t0, t1, t2 T + s string + p *int +) + +func _() { + // no spaces around simple or parenthesized expressions + _ = (a + 0) + _ = a + b + _ = a + b + c + _ = a + b - c + _ = a - b - c + _ = a + (b * c) + _ = a + (b / c) + _ = a - (b % c) + _ = 1 + a + _ = a + 1 + _ = a + b + 1 + _ = s[a] + _ = s[a:] + _ = s[:b] + _ = s[1:2] + _ = s[a:b] + _ = s[0:len(s)] + _ = s[0] << 1 + _ = (s[0] << 1) & 0xf + _ = s[0]<<2 | s[1]>>4 + _ = "foo" + s + _ = s + "foo" + _ = 'a' + 'b' + _ = len(s) / 2 + _ = len(t0.x) / a + + // spaces around expressions of different precedence or expressions containing spaces + _ = a + -b + _ = a - ^b + _ = a / *p + _ = a + b*c + _ = 1 + b*c + _ = a + 2*c + _ = a + c*2 + _ = 1 + 2*3 + _ = s[1 : 2*3] + _ = s[a : b-c] + _ = s[0:] + _ = s[a+b] + _ = s[:b-c] + _ = s[a+b:] + _ = a[a<<b+1] + _ = a[a<<b+1:] + _ = s[a+b : len(s)] + _ = s[len(s):-a] + _ = s[a : len(s)+1] + _ = s[a:len(s)+1] + s + + // spaces around operators with equal or lower precedence than comparisons + _ = a == b + _ = a != b + _ = a > b + _ = a >= b + _ = a < b + _ = a <= b + _ = a < b && c > d + _ = a < b || c > d + + // spaces around "long" operands + _ = a + longIdentifier1 + _ = longIdentifier1 + a + _ = longIdentifier1 + longIdentifier2*longIdentifier3 + _ = s + "a longer string" + + // some selected cases + _ = a + t0.x + _ = a + t0.x + t1.x*t2.x + _ = a + b + c + d + e + 2*3 + _ = a + b + c + 2*3 + d + e + _ = (a + b + c) * 2 + _ = a - b + c - d + (a + b + c) + d&e + _ = under_bar - 1 + _ = Open(dpath+"/file", O_WRONLY|O_CREAT, 0666) + _ = int(c0&_Mask4)<<18 | int(c1&_Maskx)<<12 | int(c2&_Maskx)<<6 | int(c3&_Maskx) + + // test case for issue 8021 + // want: + // ([]bool{})[([]int{})[((1)+(((1)+((((1)*(((1)+(1))+(1)))+(1))*(1)))+(1)))]] + _ = ([]bool{})[([]int{})[((1)+(((1)+((((1)*(((1)+(1))+(1)))+(1))*(1)))+(1)))]] + + // the parser does not restrict expressions that may appear as statements + true + 42 + "foo" + x + (x) + a + b + a + b + c + a + (b * c) + a + (b / c) + 1 + a + a + 1 + s[a] + x << 1 + (s[0] << 1) & 0xf + "foo" + s + x == y + x < y || z > 42 +} + +// slice expressions with cap +func _() { + _ = x[a:b:c] + _ = x[a : b : c+d] + _ = x[a : b+d : c] + _ = x[a : b+d : c+d] + _ = x[a+d : b : c] + _ = x[a+d : b : c+d] + _ = x[a+d : b+d : c] + _ = x[a+d : b+d : c+d] + + _ = x[:b:c] + _ = x[: b : c+d] + _ = x[: b+d : c] + _ = x[: b+d : c+d] +} + +func issue22111() { + _ = x[:] + + _ = x[:b] + _ = x[:b+1] + + _ = x[a:] + _ = x[a+1:] + + _ = x[a:b] + _ = x[a+1 : b] + _ = x[a : b+1] + _ = x[a+1 : b+1] + + _ = x[:b:c] + _ = x[: b+1 : c] + _ = x[: b : c+1] + _ = x[: b+1 : c+1] + + _ = x[a:b:c] + _ = x[a+1 : b : c] + _ = x[a : b+1 : c] + _ = x[a+1 : b+1 : c] + _ = x[a : b : c+1] + _ = x[a+1 : b : c+1] + _ = x[a : b+1 : c+1] + _ = x[a+1 : b+1 : c+1] +} + +func _() { + _ = a + b + _ = a + b + c + _ = a + b*c + _ = a + (b * c) + _ = (a + b) * c + _ = a + (b * c * d) + _ = a + (b*c + d) + + _ = 1 << x + _ = -1 << x + _ = 1<<x - 1 + _ = -1<<x - 1 + + _ = f(a + b) + _ = f(a + b + c) + _ = f(a + b*c) + _ = f(a + (b * c)) + _ = f(1<<x-1, 1<<x-2) + + _ = 1<<d.logWindowSize - 1 + + buf = make(x, 2*cap(b.buf)+n) + + dst[i*3+2] = dbuf[0] << 2 + dst[i*3+2] = dbuf[0]<<2 | dbuf[1]>>4 + + b.buf = b.buf[0 : b.off+m+n] + b.buf = b.buf[0 : b.off+m*n] + f(b.buf[0 : b.off+m+n]) + + signed += ' ' * 8 + tw.octal(header[148:155], chksum) + + _ = x > 0 && i >= 0 + + x1, x0 := x>>w2, x&m2 + z0 = t1<<w2 + t0 + z1 = (t1 + t0>>w2) >> w2 + q1, r1 := x1/d1, x1%d1 + r1 = r1*b2 | x0>>w2 + x1 = (x1 << z) | (x0 >> (uint(w) - z)) + x1 = x1<<z | x0>>(uint(w)-z) + + _ = buf[0 : len(buf)+1] + _ = buf[0 : n+1] + + a, b = b, a + a = b + c + a = b*c + d + _ = a*b + c + _ = a - b - c + _ = a - (b - c) + _ = a - b*c + _ = a - (b * c) + _ = a * b / c + _ = a / *b + _ = x[a|^b] + _ = x[a / *b] + _ = a & ^b + _ = a + +b + _ = a - -b + _ = x[a*-b] + _ = x[a + +b] + _ = x ^ y ^ z + _ = b[a>>24] ^ b[(a>>16)&0xFF] ^ b[(a>>8)&0xFF] ^ b[a&0xFF] + _ = len(longVariableName) * 2 + + _ = token(matchType + xlength<<lengthShift + xoffset) +} + +func f(x int, args ...int) { + f(0, args...) + f(1, args) + f(2, args[0]) + + // make sure syntactically legal code remains syntactically legal + f(3, 42 ...) // a blank must remain between 42 and ... + f(4, 42....) + f(5, 42....) + f(6, 42.0...) + f(7, 42.0...) + f(8, .42...) + f(9, .42...) + f(10, 42e0...) + f(11, 42e0...) + + _ = 42 .x // a blank must remain between 42 and .x + _ = 42..x + _ = 42..x + _ = 42.0.x + _ = 42.0.x + _ = .42.x + _ = .42.x + _ = 42e0.x + _ = 42e0.x + + // a blank must remain between the binary operator and the 2nd operand + _ = x / *y + _ = x < -1 + _ = x < <-1 + _ = x + +1 + _ = x - -1 + _ = x & &x + _ = x & ^x + + _ = f(x / *y, x < -1, x < <-1, x + +1, x - -1, x & &x, x & ^x) +} + +func _() { + _ = T{} + _ = struct{}{} + _ = [10]T{} + _ = [...]T{} + _ = []T{} + _ = map[int]T{} +} + +// one-line structs/interfaces in composite literals (up to a threshold) +func _() { + _ = struct{}{} + _ = struct{ x int }{0} + _ = struct{ x, y, z int }{0, 1, 2} + _ = struct{ int }{0} + _ = struct{ s struct{ int } }{struct{ int }{0}} + + _ = (interface{})(nil) + _ = (interface{ String() string })(nil) + _ = (interface { + String() string + })(nil) + _ = (interface{ fmt.Stringer })(nil) + _ = (interface { + fmt.Stringer + })(nil) +} + +func _() { + // do not modify literals + _ = "tab1 tab2 tab3 end" // string contains 3 tabs + _ = "tab1 tab2 tab3 end" // same string with 3 blanks - may be unaligned because editors see tabs in strings + _ = "" // this comment should be aligned with the one on the previous line + _ = `` + _ = ` +` + _ = `foo + bar` + _ = `three spaces before the end of the line starting here: +they must not be removed` +} + +func _() { + // smart handling of indentation for multi-line raw strings + var _ = `` + var _ = `foo` + var _ = `foo +bar` + + var _ = `` + var _ = `foo` + var _ = + // the next line should remain indented + `foo +bar` + + var _ = // comment + `` + var _ = // comment + `foo` + var _ = // comment + // the next line should remain indented + `foo +bar` + + var _ = /* comment */ `` + var _ = /* comment */ `foo` + var _ = /* comment */ `foo +bar` + + var _ = /* comment */ + `` + var _ = /* comment */ + `foo` + var _ = /* comment */ + // the next line should remain indented + `foo +bar` + + var board = []int( + `........... +........... +....●●●.... +....●●●.... +..●●●●●●●.. +..●●●○●●●.. +..●●●●●●●.. +....●●●.... +....●●●.... +........... +........... +`) + + var state = S{ + "foo", + // the next line should remain indented + `........... +........... +....●●●.... +....●●●.... +..●●●●●●●.. +..●●●○●●●.. +..●●●●●●●.. +....●●●.... +....●●●.... +........... +........... +`, + "bar", + } +} + +func _() { + // one-line function literals (body is on a single line) + _ = func() {} + _ = func() int { return 0 } + _ = func(x, y int) bool { m := (x + y) / 2; return m < 0 } + + // multi-line function literals (body is not on one line) + _ = func() { + } + _ = func() int { + return 0 + } + _ = func(x, y int) bool { + m := (x + y) / 2 + return x < y + } + + f(func() { + }) + f(func() int { + return 0 + }) + f(func(x, y int) bool { + m := (x + y) / 2 + return x < y + }) +} + +func _() { + _ = [][]int{ + []int{1}, + []int{1, 2}, + []int{1, 2, 3}, + } + _ = [][]int{ + {1}, + []int{1, 2}, + []int{1, 2, 3}, + } + _ = [][]int{ + {1}, + {1, 2}, + {1, 2, 3}, + } + _ = [][]int{{1}, {1, 2}, {1, 2, 3}} +} + +// various multi-line expressions +func _() { + // do not add extra indentation to multi-line string lists + _ = "foo" + "bar" + _ = "foo" + + "bar" + + "bah" + _ = []string{ + "abc" + + "def", + "foo" + + "bar", + } +} + +const _ = F1 + + `string = "%s";` + + `ptr = *;` + + `datafmt.T2 = s ["-" p "-"];` + +const _ = `datafmt "datafmt";` + + `default = "%v";` + + `array = *;` + + `datafmt.T3 = s {" " a a / ","};` + +const _ = `datafmt "datafmt";` + + `default = "%v";` + + `array = *;` + + `datafmt.T3 = s {" " a a / ","};` + +func _() { + _ = F1 + + `string = "%s";` + + `ptr = *;` + + `datafmt.T2 = s ["-" p "-"];` + + _ = + `datafmt "datafmt";` + + `default = "%v";` + + `array = *;` + + `datafmt.T3 = s {" " a a / ","};` + + _ = `datafmt "datafmt";` + + `default = "%v";` + + `array = *;` + + `datafmt.T3 = s {" " a a / ","};` +} + +func _() { + // respect source lines in multi-line expressions + _ = a + + b + + c + _ = a < b || + b < a + _ = "933262154439441526816992388562667004907159682643816214685929" + + "638952175999932299156089414639761565182862536979208272237582" + + "51185210916864000000000000000000000000" // 100! + _ = "170141183460469231731687303715884105727" // prime +} + +// Alignment after overlong lines +const ( + _ = "991" + _ = "2432902008176640000" // 20! + _ = "933262154439441526816992388562667004907159682643816214685929" + + "638952175999932299156089414639761565182862536979208272237582" + + "51185210916864000000000000000000000000" // 100! + _ = "170141183460469231731687303715884105727" // prime +) + +// Correct placement of operators and comments in multi-line expressions +func _() { + _ = a + // comment + b + // comment + c + _ = "a" + + "b" + // comment + "c" + _ = "ba0408" + "7265717569726564" // field 71, encoding 2, string "required" +} + +// Correct placement of terminating comma/closing parentheses in multi-line calls. +func _() { + f(1, + 2, + 3) + f(1, + 2, + 3, + ) + f(1, + 2, + 3) // comment + f(1, + 2, + 3, // comment + ) + f(1, + 2, + 3) // comment + f(1, + 2, + 3, // comment + ) +} + +// Align comments in multi-line lists of single-line expressions. +var txpix = [NCOL]draw.Color{ + draw.Yellow, // yellow + draw.Cyan, // cyan + draw.Green, // lime green + draw.GreyBlue, // slate + draw.Red, /* red */ + draw.GreyGreen, /* olive green */ + draw.Blue, /* blue */ + draw.Color(0xFF55AAFF), /* pink */ + draw.Color(0xFFAAFFFF), /* lavender */ + draw.Color(0xBB005DFF), /* maroon */ +} + +func same(t, u *Time) bool { + // respect source lines in multi-line expressions + return t.Year == u.Year && + t.Month == u.Month && + t.Day == u.Day && + t.Hour == u.Hour && + t.Minute == u.Minute && + t.Second == u.Second && + t.Weekday == u.Weekday && + t.ZoneOffset == u.ZoneOffset && + t.Zone == u.Zone +} + +func (p *parser) charClass() { + // respect source lines in multi-line expressions + if cc.negate && len(cc.ranges) == 2 && + cc.ranges[0] == '\n' && cc.ranges[1] == '\n' { + nl := new(_NotNl) + p.re.add(nl) + } +} + +func addState(s []state, inst instr, match []int) { + // handle comments correctly in multi-line expressions + for i := 0; i < l; i++ { + if s[i].inst.index() == index && // same instruction + s[i].match[0] < pos { // earlier match already going; leftmost wins + return s + } + } +} + +func (self *T) foo(x int) *T { return self } + +func _() { module.Func1().Func2() } + +func _() { + _ = new(T). + foo(1). + foo(2). + foo(3) + + _ = new(T). + foo(1). + foo(2). // inline comments + foo(3) + + _ = new(T).foo(1).foo(2).foo(3) + + // handle multiline argument list correctly + _ = new(T). + foo( + 1). + foo(2) + + _ = new(T).foo( + 1).foo(2) + + _ = Array[3+ + 4] + + _ = Method(1, 2, + 3) + + _ = new(T). + foo(). + bar().(*Type) + + _ = new(T). + foo(). + bar().(*Type). + baz() + + _ = new(T). + foo(). + bar()["idx"] + + _ = new(T). + foo(). + bar()["idx"]. + baz() + + _ = new(T). + foo(). + bar()[1:2] + + _ = new(T). + foo(). + bar()[1:2]. + baz() + + _ = new(T). + Field. + Array[3+ + 4]. + Table["foo"]. + Blob.(*Type). + Slices[1:4]. + Method(1, 2, + 3). + Thingy + + _ = a.b.c + _ = a. + b. + c + _ = a.b().c + _ = a. + b(). + c + _ = a.b[0].c + _ = a. + b[0]. + c + _ = a.b[0:].c + _ = a. + b[0:]. + c + _ = a.b.(T).c + _ = a. + b.(T). + c +} + +// Don't introduce extra newlines in strangely formatted expression lists. +func f() { + // os.Open parameters should remain on two lines + if writer, err = os.Open(outfile, s.O_WRONLY|os.O_CREATE| + os.O_TRUNC, 0666); err != nil { + log.Fatal(err) + } +} + +// Handle multi-line argument lists ending in ... correctly. +// Was issue 3130. +func _() { + _ = append(s, a...) + _ = append( + s, a...) + _ = append(s, + a...) + _ = append( + s, + a...) + _ = append(s, a..., + ) + _ = append(s, + a..., + ) + _ = append( + s, + a..., + ) +} + +// Literal function types in conversions must be parenthesized; +// for now go/parser accepts the unparenthesized form where it +// is non-ambiguous. +func _() { + // these conversions should be rewritten to look + // the same as the parenthesized conversions below + _ = (func())(nil) + _ = (func(x int) float)(nil) + _ = (func() func() func())(nil) + + _ = (func())(nil) + _ = (func(x int) float)(nil) + _ = (func() func() func())(nil) +} + +func _() { + _ = f(). + f(func() { + f() + }). + f(map[int]int{ + 1: 2, + 3: 4, + }) + + _ = f(). + f( + func() { + f() + }, + ) +} |