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Remove -oldprinter flag from gofmt; all code is

Browse Source 
now printed using the semicolon-free style.

Removed NoSemis flag and mechanism dealing with
optional semicolons from go/printer.

Updated all go/printer output files using the
semi-colon free style.

Changes have no formatting impact on checked in
go code under src and misc.

R=rsc, r
CC=golang-dev
https://golang.org/cl/184068
This commit is contained in:
Robert Griesemer 2010-01-11 12:58:13 -08:00
parent 00e2cda624
commit 5dee91001b
11 changed files with 656 additions and 699 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/cmd/godoc/godoc.go
View File

@ -530,7 +530,7 @@ func (p *tconv) Write(data []byte) (n int, err os.Error) {
// Write an AST-node to w; optionally html-escaped. // Write an AST-node to w; optionally html-escaped.
func writeNode(w io.Writer, node interface{}, html bool, styler printer.Styler) { func writeNode(w io.Writer, node interface{}, html bool, styler printer.Styler) {
mode := printer.TabIndent | printer.UseSpaces | printer.NoSemis mode := printer.TabIndent | printer.UseSpaces
if html { if html {
mode |= printer.GenHTML mode |= printer.GenHTML
} }

6
src/cmd/gofmt/gofmt.go
View File

@ -36,8 +36,7 @@ var (
useSpaces = flag.Bool("spaces", true, "align with spaces instead of tabs") useSpaces = flag.Bool("spaces", true, "align with spaces instead of tabs")
// semicolon transition // semicolon transition
useOldParser = flag.Bool("oldparser", false, "parse old syntax (required semicolons)") useOldParser = flag.Bool("oldparser", false, "parse old syntax (required semicolons)")
useOldPrinter = flag.Bool("oldprinter", false, "print old syntax (required semicolons)")
) )
@ -81,9 +80,6 @@ func initPrinterMode() {
if *useSpaces { if *useSpaces {
printerMode |= printer.UseSpaces printerMode |= printer.UseSpaces
} }
if !*useOldPrinter {
printerMode |= printer.NoSemis
}
} }

78
src/pkg/go/printer/nodes.go
View File

@ -282,9 +282,8 @@ func (p *printer) parameters(list []*ast.Field, multiLine *bool) {
} }
// Returns true if a separating semicolon is optional.
// Sets multiLine to true if the signature spans multiple lines. // Sets multiLine to true if the signature spans multiple lines.
func (p *printer) signature(params, result []*ast.Field, multiLine *bool) (optSemi bool) { func (p *printer) signature(params, result []*ast.Field, multiLine *bool) {
p.parameters(params, multiLine) p.parameters(params, multiLine)
if result != nil { if result != nil {
p.print(blank) p.print(blank)
@ -293,7 +292,7 @@ func (p *printer) signature(params, result []*ast.Field, multiLine *bool) (optSe
// single anonymous result; no ()'s unless it's a function type // single anonymous result; no ()'s unless it's a function type
f := result[0] f := result[0]
if _, isFtyp := f.Type.(*ast.FuncType); !isFtyp { if _, isFtyp := f.Type.(*ast.FuncType); !isFtyp {
optSemi = p.expr(f.Type, multiLine) p.expr(f.Type, multiLine)
return return
} }
} }
@ -400,9 +399,6 @@ func (p *printer) fieldList(lbrace token.Position, list []*ast.Field, rbrace tok
p.expr(&ast.StringList{f.Tag}, &ml) p.expr(&ast.StringList{f.Tag}, &ml)
extraTabs = 0 extraTabs = 0
} }
if p.Mode&NoSemis == 0 {
p.print(token.SEMICOLON)
}
if f.Comment != nil { if f.Comment != nil {
for ; extraTabs > 0; extraTabs-- { for ; extraTabs > 0; extraTabs-- {
p.print(vtab) p.print(vtab)
@ -435,9 +431,6 @@ func (p *printer) fieldList(lbrace token.Position, list []*ast.Field, rbrace tok
// embedded interface // embedded interface
p.expr(f.Type, &ml) p.expr(f.Type, &ml)
} }
if p.Mode&NoSemis == 0 {
p.print(token.SEMICOLON)
}
p.lineComment(f.Comment) p.lineComment(f.Comment)
} }
if isIncomplete { if isIncomplete {
@ -630,9 +623,8 @@ func isBinary(expr ast.Expr) bool {
} }
// Returns true if a separating semicolon is optional.
// Sets multiLine to true if the expression spans multiple lines. // Sets multiLine to true if the expression spans multiple lines.
func (p *printer) expr1(expr ast.Expr, prec1, depth int, ctxt exprContext, multiLine *bool) (optSemi bool) { func (p *printer) expr1(expr ast.Expr, prec1, depth int, ctxt exprContext, multiLine *bool) {
p.print(expr.Pos()) p.print(expr.Pos())
switch x := expr.(type) { switch x := expr.(type) {
@ -660,12 +652,12 @@ func (p *printer) expr1(expr ast.Expr, prec1, depth int, ctxt exprContext, multi
// parenthesis needed // parenthesis needed
p.print(token.LPAREN) p.print(token.LPAREN)
p.print(token.MUL) p.print(token.MUL)
optSemi = p.expr(x.X, multiLine) p.expr(x.X, multiLine)
p.print(token.RPAREN) p.print(token.RPAREN)
} else { } else {
// no parenthesis needed // no parenthesis needed
p.print(token.MUL) p.print(token.MUL)
optSemi = p.expr(x.X, multiLine) p.expr(x.X, multiLine)
} }
case *ast.UnaryExpr: case *ast.UnaryExpr:
@ -743,11 +735,7 @@ func (p *printer) expr1(expr ast.Expr, prec1, depth int, ctxt exprContext, multi
} }
p.expr1(x.Fun, token.HighestPrec, depth, 0, multiLine) p.expr1(x.Fun, token.HighestPrec, depth, 0, multiLine)
p.print(x.Lparen, token.LPAREN) p.print(x.Lparen, token.LPAREN)
mode := commaSep p.exprList(x.Lparen, x.Args, depth, commaSep|commaTerm, multiLine, x.Rparen)
if p.Mode&NoSemis != 0 {
mode |= commaTerm
}
p.exprList(x.Lparen, x.Args, depth, mode, multiLine, x.Rparen)
p.print(x.Rparen, token.RPAREN) p.print(x.Rparen, token.RPAREN)
case *ast.CompositeLit: case *ast.CompositeLit:
@ -778,27 +766,25 @@ func (p *printer) expr1(expr ast.Expr, prec1, depth int, ctxt exprContext, multi
p.expr(x.Len, multiLine) p.expr(x.Len, multiLine)
} }
p.print(token.RBRACK) p.print(token.RBRACK)
optSemi = p.expr(x.Elt, multiLine) p.expr(x.Elt, multiLine)
case *ast.StructType: case *ast.StructType:
p.print(token.STRUCT) p.print(token.STRUCT)
p.fieldList(x.Lbrace, x.Fields, x.Rbrace, x.Incomplete, ctxt|structType) p.fieldList(x.Lbrace, x.Fields, x.Rbrace, x.Incomplete, ctxt|structType)
optSemi = true
case *ast.FuncType: case *ast.FuncType:
p.print(token.FUNC) p.print(token.FUNC)
optSemi = p.signature(x.Params, x.Results, multiLine) p.signature(x.Params, x.Results, multiLine)
case *ast.InterfaceType: case *ast.InterfaceType:
p.print(token.INTERFACE) p.print(token.INTERFACE)
p.fieldList(x.Lbrace, x.Methods, x.Rbrace, x.Incomplete, ctxt) p.fieldList(x.Lbrace, x.Methods, x.Rbrace, x.Incomplete, ctxt)
optSemi = true
case *ast.MapType: case *ast.MapType:
p.print(token.MAP, token.LBRACK) p.print(token.MAP, token.LBRACK)
p.expr(x.Key, multiLine) p.expr(x.Key, multiLine)
p.print(token.RBRACK) p.print(token.RBRACK)
optSemi = p.expr(x.Value, multiLine) p.expr(x.Value, multiLine)
case *ast.ChanType: case *ast.ChanType:
switch x.Dir { switch x.Dir {
@ -810,7 +796,7 @@ func (p *printer) expr1(expr ast.Expr, prec1, depth int, ctxt exprContext, multi
p.print(token.CHAN, token.ARROW) p.print(token.CHAN, token.ARROW)
} }
p.print(blank) p.print(blank)
optSemi = p.expr(x.Value, multiLine) p.expr(x.Value, multiLine)
default: default:
panic("unreachable") panic("unreachable")
@ -820,16 +806,15 @@ func (p *printer) expr1(expr ast.Expr, prec1, depth int, ctxt exprContext, multi
} }
func (p *printer) expr0(x ast.Expr, depth int, multiLine *bool) (optSemi bool) { func (p *printer) expr0(x ast.Expr, depth int, multiLine *bool) {
return p.expr1(x, token.LowestPrec, depth, 0, multiLine) p.expr1(x, token.LowestPrec, depth, 0, multiLine)
} }
// Returns true if a separating semicolon is optional.
// Sets multiLine to true if the expression spans multiple lines. // Sets multiLine to true if the expression spans multiple lines.
func (p *printer) expr(x ast.Expr, multiLine *bool) (optSemi bool) { func (p *printer) expr(x ast.Expr, multiLine *bool) {
const depth = 1 const depth = 1
return p.expr1(x, token.LowestPrec, depth, 0, multiLine) p.expr1(x, token.LowestPrec, depth, 0, multiLine)
} }
@ -852,9 +837,7 @@ func (p *printer) stmtList(list []ast.Stmt, _indent int) {
// in those cases each clause is a new section // in those cases each clause is a new section
p.linebreak(s.Pos().Line, 1, maxStmtNewlines, ignore, i == 0 || _indent == 0 || multiLine) p.linebreak(s.Pos().Line, 1, maxStmtNewlines, ignore, i == 0 || _indent == 0 || multiLine)
multiLine = false multiLine = false
if !p.stmt(s, &multiLine) && len(list) > 1 && p.Mode&NoSemis == 0 { p.stmt(s, &multiLine)
p.print(token.SEMICOLON)
}
} }
if _indent > 0 { if _indent > 0 {
p.print(unindent) p.print(unindent)
@ -933,9 +916,8 @@ func (p *printer) controlClause(isForStmt bool, init ast.Stmt, expr ast.Expr, po
} }
// Returns true if a separating semicolon is optional.
// Sets multiLine to true if the statements spans multiple lines. // Sets multiLine to true if the statements spans multiple lines.
func (p *printer) stmt(stmt ast.Stmt, multiLine *bool) (optSemi bool) { func (p *printer) stmt(stmt ast.Stmt, multiLine *bool) {
p.print(stmt.Pos()) p.print(stmt.Pos())
switch s := stmt.(type) { switch s := stmt.(type) {
@ -944,7 +926,6 @@ func (p *printer) stmt(stmt ast.Stmt, multiLine *bool) (optSemi bool) {
case *ast.DeclStmt: case *ast.DeclStmt:
p.decl(s.Decl, inStmtList, multiLine) p.decl(s.Decl, inStmtList, multiLine)
optSemi = true // decl prints terminating semicolon if necessary
case *ast.EmptyStmt: case *ast.EmptyStmt:
// nothing to do // nothing to do
@ -957,7 +938,7 @@ func (p *printer) stmt(stmt ast.Stmt, multiLine *bool) (optSemi bool) {
p.expr(s.Label, multiLine) p.expr(s.Label, multiLine)
p.print(token.COLON, vtab, indent) p.print(token.COLON, vtab, indent)
p.linebreak(s.Stmt.Pos().Line, 0, 1, ignore, true) p.linebreak(s.Stmt.Pos().Line, 0, 1, ignore, true)
optSemi = p.stmt(s.Stmt, multiLine) p.stmt(s.Stmt, multiLine)
case *ast.ExprStmt: case *ast.ExprStmt:
const depth = 1 const depth = 1
@ -1001,19 +982,17 @@ func (p *printer) stmt(stmt ast.Stmt, multiLine *bool) (optSemi bool) {
case *ast.BlockStmt: case *ast.BlockStmt:
p.block(s, 1, false) p.block(s, 1, false)
*multiLine = true *multiLine = true
optSemi = true
case *ast.IfStmt: case *ast.IfStmt:
p.print(token.IF) p.print(token.IF)
p.controlClause(false, s.Init, s.Cond, nil) p.controlClause(false, s.Init, s.Cond, nil)
p.block(s.Body, 1, true) p.block(s.Body, 1, true)
*multiLine = true *multiLine = true
optSemi = true
if s.Else != nil { if s.Else != nil {
p.print(blank, token.ELSE, blank) p.print(blank, token.ELSE, blank)
switch s.Else.(type) { switch s.Else.(type) {
case *ast.BlockStmt, *ast.IfStmt: case *ast.BlockStmt, *ast.IfStmt:
optSemi = p.stmt(s.Else, ignoreMultiLine) p.stmt(s.Else, ignoreMultiLine)
default: default:
p.print(token.LBRACE, indent, formfeed) p.print(token.LBRACE, indent, formfeed)
p.stmt(s.Else, ignoreMultiLine) p.stmt(s.Else, ignoreMultiLine)
@ -1030,14 +1009,12 @@ func (p *printer) stmt(stmt ast.Stmt, multiLine *bool) (optSemi bool) {
} }
p.print(s.Colon, token.COLON) p.print(s.Colon, token.COLON)
p.stmtList(s.Body, 1) p.stmtList(s.Body, 1)
optSemi = true // "block" without {}'s
case *ast.SwitchStmt: case *ast.SwitchStmt:
p.print(token.SWITCH) p.print(token.SWITCH)
p.controlClause(false, s.Init, s.Tag, nil) p.controlClause(false, s.Init, s.Tag, nil)
p.block(s.Body, 0, true) p.block(s.Body, 0, true)
*multiLine = true *multiLine = true
optSemi = true
case *ast.TypeCaseClause: case *ast.TypeCaseClause:
if s.Types != nil { if s.Types != nil {
@ -1048,7 +1025,6 @@ func (p *printer) stmt(stmt ast.Stmt, multiLine *bool) (optSemi bool) {
} }
p.print(s.Colon, token.COLON) p.print(s.Colon, token.COLON)
p.stmtList(s.Body, 1) p.stmtList(s.Body, 1)
optSemi = true // "block" without {}'s
case *ast.TypeSwitchStmt: case *ast.TypeSwitchStmt:
p.print(token.SWITCH) p.print(token.SWITCH)
@ -1062,7 +1038,6 @@ func (p *printer) stmt(stmt ast.Stmt, multiLine *bool) (optSemi bool) {
p.print(blank) p.print(blank)
p.block(s.Body, 0, true) p.block(s.Body, 0, true)
*multiLine = true *multiLine = true
optSemi = true
case *ast.CommClause: case *ast.CommClause:
if s.Rhs != nil { if s.Rhs != nil {
@ -1077,20 +1052,17 @@ func (p *printer) stmt(stmt ast.Stmt, multiLine *bool) (optSemi bool) {
} }
p.print(s.Colon, token.COLON) p.print(s.Colon, token.COLON)
p.stmtList(s.Body, 1) p.stmtList(s.Body, 1)
optSemi = true // "block" without {}'s
case *ast.SelectStmt: case *ast.SelectStmt:
p.print(token.SELECT, blank) p.print(token.SELECT, blank)
p.block(s.Body, 0, false) p.block(s.Body, 0, false)
*multiLine = true *multiLine = true
optSemi = true
case *ast.ForStmt: case *ast.ForStmt:
p.print(token.FOR) p.print(token.FOR)
p.controlClause(true, s.Init, s.Cond, s.Post) p.controlClause(true, s.Init, s.Cond, s.Post)
p.block(s.Body, 1, true) p.block(s.Body, 1, true)
*multiLine = true *multiLine = true
optSemi = true
case *ast.RangeStmt: case *ast.RangeStmt:
p.print(token.FOR, blank) p.print(token.FOR, blank)
@ -1104,7 +1076,6 @@ func (p *printer) stmt(stmt ast.Stmt, multiLine *bool) (optSemi bool) {
p.print(blank) p.print(blank)
p.block(s.Body, 1, true) p.block(s.Body, 1, true)
*multiLine = true *multiLine = true
optSemi = true
default: default:
panic("unreachable") panic("unreachable")
@ -1132,7 +1103,6 @@ const (
// //
func (p *printer) spec(spec ast.Spec, n int, context declContext, multiLine *bool) { func (p *printer) spec(spec ast.Spec, n int, context declContext, multiLine *bool) {
var ( var (
optSemi bool // true if a semicolon is optional
comment *ast.CommentGroup // a line comment, if any comment *ast.CommentGroup // a line comment, if any
extraTabs int // number of extra tabs before comment, if any extraTabs int // number of extra tabs before comment, if any
) )
@ -1159,12 +1129,11 @@ func (p *printer) spec(spec ast.Spec, n int, context declContext, multiLine *boo
if n == 1 { if n == 1 {
if s.Type != nil { if s.Type != nil {
p.print(blank) p.print(blank)
optSemi = p.expr(s.Type, multiLine) p.expr(s.Type, multiLine)
} }
if s.Values != nil { if s.Values != nil {
p.print(blank, token.ASSIGN) p.print(blank, token.ASSIGN)
p.exprList(noPos, s.Values, 1, blankStart|commaSep, multiLine, noPos) p.exprList(noPos, s.Values, 1, blankStart|commaSep, multiLine, noPos)
optSemi = false
} }
} else { } else {
extraTabs = 2 extraTabs = 2
@ -1172,14 +1141,13 @@ func (p *printer) spec(spec ast.Spec, n int, context declContext, multiLine *boo
p.print(vtab) p.print(vtab)
} }
if s.Type != nil { if s.Type != nil {
optSemi = p.expr(s.Type, multiLine) p.expr(s.Type, multiLine)
extraTabs = 1 extraTabs = 1
} }
if s.Values != nil { if s.Values != nil {
p.print(vtab) p.print(vtab)
p.print(token.ASSIGN) p.print(token.ASSIGN)
p.exprList(noPos, s.Values, 1, blankStart|commaSep, multiLine, noPos) p.exprList(noPos, s.Values, 1, blankStart|commaSep, multiLine, noPos)
optSemi = false
extraTabs = 0 extraTabs = 0
} }
} }
@ -1194,17 +1162,13 @@ func (p *printer) spec(spec ast.Spec, n int, context declContext, multiLine *boo
} else { } else {
p.print(vtab) p.print(vtab)
} }
optSemi = p.expr(s.Type, multiLine) p.expr(s.Type, multiLine)
comment = s.Comment comment = s.Comment
default: default:
panic("unreachable") panic("unreachable")
} }
if (context == inGroup || context == inStmtList && !optSemi) && p.Mode&NoSemis == 0 {
p.print(token.SEMICOLON)
}
if comment != nil { if comment != nil {
for ; extraTabs > 0; extraTabs-- { for ; extraTabs > 0; extraTabs-- {
p.print(vtab) p.print(vtab)

1
src/pkg/go/printer/printer.go
View File

@ -894,7 +894,6 @@ const (
RawFormat // do not use a tabwriter; if set, UseSpaces is ignored RawFormat // do not use a tabwriter; if set, UseSpaces is ignored
TabIndent // use tabs for indentation independent of UseSpaces TabIndent // use tabs for indentation independent of UseSpaces
UseSpaces // use spaces instead of tabs for alignment UseSpaces // use spaces instead of tabs for alignment
NoSemis // don't print semicolons at the end of a line
) )

60
src/pkg/go/printer/testdata/comments.golden vendored
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@ -10,8 +10,8 @@ import "fmt" // fmt
const c0 = 0 // zero const c0 = 0 // zero
const ( const (
c1 = iota; // c1 c1 = iota // c1
c2; // c2 c2 // c2
) )
@ -20,21 +20,21 @@ type SZ struct{}
// The S0 struct; no field is exported. // The S0 struct; no field is exported.
type S0 struct { type S0 struct {
int; int
x, y, z int; // 3 unexported fields x, y, z int // 3 unexported fields
} }
// The S1 struct; some fields are not exported. // The S1 struct; some fields are not exported.
type S1 struct { type S1 struct {
S0; S0
A, B, C float; // 3 exported fields A, B, C float // 3 exported fields
D, b, c int; // 2 unexported fields D, b, c int // 2 unexported fields
} }
// The S2 struct; all fields are exported. // The S2 struct; all fields are exported.
type S2 struct { type S2 struct {
S1; S1
A, B, C float; // 3 exported fields A, B, C float // 3 exported fields
} }
// The IZ interface; it is empty. // The IZ interface; it is empty.
@ -42,21 +42,21 @@ type SZ interface{}
// The I0 interface; no method is exported. // The I0 interface; no method is exported.
type I0 interface { type I0 interface {
f(x int) int; // unexported method f(x int) int // unexported method
} }
// The I1 interface; some methods are not exported. // The I1 interface; some methods are not exported.
type I1 interface { type I1 interface {
I0; I0
F(x float) float; // exported methods F(x float) float // exported methods
g(x int) int; // unexported method g(x int) int // unexported method
} }
// The I2 interface; all methods are exported. // The I2 interface; all methods are exported.
type I2 interface { type I2 interface {
I0; I0
F(x float) float; // exported method F(x float) float // exported method
G(x float) float; // exported method G(x float) float // exported method
} }
// This comment group should be separated // This comment group should be separated
@ -71,23 +71,23 @@ var ()
// This comment SHOULD be associated with the next declaration. // This comment SHOULD be associated with the next declaration.
func f0() { func f0() {
const pi = 3.14; // pi const pi = 3.14 // pi
var s1 struct{} /* an empty struct */ /* foo */ var s1 struct{} /* an empty struct */ /* foo */
// a struct constructor // a struct constructor
// -------------------- // --------------------
var s2 struct{} = struct{}{}; var s2 struct{} = struct{}{}
x := pi; x := pi
} }
// //
// NO SPACE HERE // NO SPACE HERE
// //
func f1() { func f1() {
f0(); f0()
/* 1 */ /* 1 */
// 2 // 2
/* 3 */ /* 3 */
/* 4 */ /* 4 */
f0(); f0()
} }
@ -100,7 +100,7 @@ func abs(x int) int {
if x < 0 { // the tab printed before this comment's // must not affect the remaining lines if x < 0 { // the tab printed before this comment's // must not affect the remaining lines
return -x // this statement should be properly indented return -x // this statement should be properly indented
} }
return x; return x
} }
@ -283,14 +283,14 @@ func _( /* this */ x /* is */ /* an */ int) {}
// Line comments with tabs // Line comments with tabs
func _() { func _() {
var finput *bufio.Reader; // input file var finput *bufio.Reader // input file
var stderr *bufio.Writer; var stderr *bufio.Writer
var ftable *bufio.Writer; // y.go file var ftable *bufio.Writer // y.go file
var foutput *bufio.Writer; // y.output file var foutput *bufio.Writer // y.output file
var oflag string; // -o [y.go] - y.go file var oflag string // -o [y.go] - y.go file
var vflag string; // -v [y.output] - y.output file var vflag string // -v [y.output] - y.output file
var lflag bool; // -l - disable line directives var lflag bool // -l - disable line directives
} }

20
src/pkg/go/printer/testdata/comments.x vendored
View File

@ -15,17 +15,17 @@ type S0 struct {
// The S1 struct; some fields are not exported. // The S1 struct; some fields are not exported.
type S1 struct { type S1 struct {
S0; S0
A, B, C float; // 3 exported fields A, B, C float // 3 exported fields
D int; // 2 unexported fields D int // 2 unexported fields
// contains unexported fields // contains unexported fields
} }
// The S2 struct; all fields are exported. // The S2 struct; all fields are exported.
type S2 struct { type S2 struct {
S1; S1
A, B, C float; // 3 exported fields A, B, C float // 3 exported fields
} }
@ -41,15 +41,15 @@ type I0 interface {
// The I1 interface; some methods are not exported. // The I1 interface; some methods are not exported.
type I1 interface { type I1 interface {
I0; I0
F(x float) float; // exported methods F(x float) float // exported methods
// contains unexported methods // contains unexported methods
} }
// The I2 interface; all methods are exported. // The I2 interface; all methods are exported.
type I2 interface { type I2 interface {
I0; I0
F(x float) float; // exported method F(x float) float // exported method
G(x float) float; // exported method G(x float) float // exported method
} }

366
src/pkg/go/printer/testdata/declarations.golden vendored
View File

@ -7,22 +7,22 @@ package imports
import "io" import "io"
import ( import (
_ "io"; _ "io"
) )
import _ "io" import _ "io"
import ( import (
"io"; "io"
"io"; "io"
"io"; "io"
) )
import ( import (
"io"; "io"
aLongRename "io"; aLongRename "io"
b "io"; b "io"
) )
// no newlines between consecutive single imports, but // no newlines between consecutive single imports, but
@ -52,17 +52,17 @@ import (
// a comment // a comment
"bar" + "bar" +
"foo" + // a comment "foo" + // a comment
"bar"; // a comment "bar" // a comment
) )
// a case that caused problems in the past (comment placement) // a case that caused problems in the past (comment placement)
import ( import (
. "fmt"; . "fmt"
"io"; "io"
"malloc"; // for the malloc count test only "malloc" // for the malloc count test only
"math"; "math"
"strings"; "strings"
"testing"; "testing"
) )
@ -74,19 +74,19 @@ var _ int
func _() { func _() {
// the following decls need a semicolon at the end // the following decls need a semicolon at the end
type _ int; type _ int
type _ *int; type _ *int
type _ []int; type _ []int
type _ map[string]int; type _ map[string]int
type _ chan int; type _ chan int
type _ func() int; type _ func() int
var _ int; var _ int
var _ *int; var _ *int
var _ []int; var _ []int
var _ map[string]int; var _ map[string]int
var _ chan int; var _ chan int
var _ func() int; var _ func() int
// the following decls don't need a semicolon at the end // the following decls don't need a semicolon at the end
type _ struct{} type _ struct{}
@ -121,116 +121,116 @@ func _() {
// don't lose blank lines in grouped declarations // don't lose blank lines in grouped declarations
const ( const (
_ int = 0; _ int = 0
_ float = 1; _ float = 1
_ string = "foo"; _ string = "foo"
_ = iota; _ = iota
_; _
// a comment // a comment
_; _
_; _
) )
type ( type (
_ int; _ int
_ struct{}; _ struct{}
_ interface{}; _ interface{}
// a comment // a comment
_ map[string]int; _ map[string]int
) )
var ( var (
_ int = 0; _ int = 0
_ float = 1; _ float = 1
_ string = "foo"; _ string = "foo"
_ bool; _ bool
// a comment // a comment
_ bool; _ bool
) )
// don't lose blank lines in this struct // don't lose blank lines in this struct
type _ struct { type _ struct {
String struct { String struct {
Str, Len int; Str, Len int
}; }
Slice struct { Slice struct {
Array, Len, Cap int; Array, Len, Cap int
}; }
Eface struct { Eface struct {
Typ, Ptr int; Typ, Ptr int
}; }
UncommonType struct { UncommonType struct {
Name, PkgPath int; Name, PkgPath int
}; }
CommonType struct { CommonType struct {
Size, Hash, Alg, Align, FieldAlign, String, UncommonType int; Size, Hash, Alg, Align, FieldAlign, String, UncommonType int
}; }
Type struct { Type struct {
Typ, Ptr int; Typ, Ptr int
}; }
StructField struct { StructField struct {
Name, PkgPath, Typ, Tag, Offset int; Name, PkgPath, Typ, Tag, Offset int
}; }
StructType struct { StructType struct {
Fields int; Fields int
}; }
PtrType struct { PtrType struct {
Elem int; Elem int
}; }
SliceType struct { SliceType struct {
Elem int; Elem int
}; }
ArrayType struct { ArrayType struct {
Elem, Len int; Elem, Len int
}; }
Stktop struct { Stktop struct {
Stackguard, Stackbase, Gobuf int; Stackguard, Stackbase, Gobuf int
}; }
Gobuf struct { Gobuf struct {
Sp, Pc, G int; Sp, Pc, G int
}; }
G struct { G struct {
Stackbase, Sched, Status, Alllink int; Stackbase, Sched, Status, Alllink int
}; }
} }
// no tabs for single or ungrouped decls // no tabs for single or ungrouped decls
func _() { func _() {
const xxxxxx = 0; const xxxxxx = 0
type x int; type x int
var xxx int; var xxx int
var yyyy float = 3.14; var yyyy float = 3.14
var zzzzz = "bar"; var zzzzz = "bar"
const ( const (
xxxxxx = 0; xxxxxx = 0
) )
type ( type (
x int; x int
) )
var ( var (
xxx int; xxx int
) )
var ( var (
yyyy float = 3.14; yyyy float = 3.14
) )
var ( var (
zzzzz = "bar"; zzzzz = "bar"
) )
} }
@ -238,79 +238,79 @@ func _() {
func _() { func _() {
// no entry has a type // no entry has a type
const ( const (
zzzzzz = 1; zzzzzz = 1
z = 2; z = 2
zzz = 3; zzz = 3
) )
// some entries have a type // some entries have a type
const ( const (
xxxxxx = 1; xxxxxx = 1
x = 2; x = 2
xxx = 3; xxx = 3
yyyyyyyy float = iota; yyyyyyyy float = iota
yyyy = "bar"; yyyy = "bar"
yyy; yyy
yy = 2; yy = 2
) )
} }
func _() { func _() {
// no entry has a type // no entry has a type
var ( var (
zzzzzz = 1; zzzzzz = 1
z = 2; z = 2
zzz = 3; zzz = 3
) )
// no entry has a value // no entry has a value
var ( var (
_ int; _ int
_ float; _ float
_ string; _ string
_ int; // comment _ int // comment
_ float; // comment _ float // comment
_ string; // comment _ string // comment
) )
// some entries have a type // some entries have a type
var ( var (
xxxxxx int; xxxxxx int
x float; x float
xxx string; xxx string
yyyyyyyy int = 1234; yyyyyyyy int = 1234
y float = 3.14; y float = 3.14
yyyy = "bar"; yyyy = "bar"
yyy string = "foo"; yyy string = "foo"
) )
// mixed entries - all comments should be aligned // mixed entries - all comments should be aligned
var ( var (
a, b, c int; a, b, c int
x = 10; x = 10
d int; // comment d int // comment
y = 20; // comment y = 20 // comment
f, ff, fff, ffff int = 0, 1, 2, 3; // comment f, ff, fff, ffff int = 0, 1, 2, 3 // comment
) )
// respect original line breaks // respect original line breaks
var _ = []T{ var _ = []T{
T{0x20, "Telugu"}, T{0x20, "Telugu"},
}; }
var _ = []T{ var _ = []T{
// respect original line breaks // respect original line breaks
T{0x20, "Telugu"}, T{0x20, "Telugu"},
}; }
} }
func _() { func _() {
type ( type (
xxxxxx int; xxxxxx int
x float; x float
xxx string; xxx string
xxxxx []x; xxxxx []x
xx struct{}; xx struct{}
xxxxxxx struct { xxxxxxx struct {
_, _ int; _, _ int
_ float; _ float
}; }
xxxx chan<- string; xxxx chan<- string
) )
} }
@ -325,59 +325,59 @@ type _ struct {
} }
type _ struct { // this comment must not change indentation type _ struct { // this comment must not change indentation
f int; f int
f, ff, fff, ffff int; f, ff, fff, ffff int
} }
type _ struct { type _ struct {
string; string
} }
type _ struct { type _ struct {
string; // comment string // comment
} }
type _ struct { type _ struct {
string "tag"; string "tag"
} }
type _ struct { type _ struct {
string "tag"; // comment string "tag" // comment
} }
type _ struct { type _ struct {
f int; f int
} }
type _ struct { type _ struct {
f int; // comment f int // comment
} }
type _ struct { type _ struct {
f int "tag"; f int "tag"
} }
type _ struct { type _ struct {
f int "tag"; // comment f int "tag" // comment
} }
type _ struct { type _ struct {
bool; bool
a, b, c int; a, b, c int
int "tag"; int "tag"
ES; // comment ES // comment
float "tag"; // comment float "tag" // comment
f int; // comment f int // comment
f, ff, fff, ffff int; // comment f, ff, fff, ffff int // comment
g float "tag"; g float "tag"
h float "tag"; // comment h float "tag" // comment
} }
// difficult cases // difficult cases
type _ struct { type _ struct {
bool; // comment bool // comment
text []byte; // comment text []byte // comment
} }
@ -385,41 +385,41 @@ type _ struct {
type EI interface{} type EI interface{}
type _ interface { type _ interface {
EI; EI
} }
type _ interface { type _ interface {
f(); f()
fffff(); fffff()
} }
type _ interface { type _ interface {
EI; EI
f(); f()
fffffg(); fffffg()
} }
type _ interface { // this comment must not change indentation type _ interface { // this comment must not change indentation
EI; // here's a comment EI // here's a comment
f(); // no blank between identifier and () f() // no blank between identifier and ()
fffff(); // no blank between identifier and () fffff() // no blank between identifier and ()
gggggggggggg(x, y, z int); // hurray gggggggggggg(x, y, z int) // hurray
} }
// formatting of variable declarations // formatting of variable declarations
func _() { func _() {
type day struct { type day struct {
n int; n int
short, long string; short, long string
} }
var ( var (
Sunday = day{0, "SUN", "Sunday"}; Sunday = day{0, "SUN", "Sunday"}
Monday = day{1, "MON", "Monday"}; Monday = day{1, "MON", "Monday"}
Tuesday = day{2, "TUE", "Tuesday"}; Tuesday = day{2, "TUE", "Tuesday"}
Wednesday = day{3, "WED", "Wednesday"}; Wednesday = day{3, "WED", "Wednesday"}
Thursday = day{4, "THU", "Thursday"}; Thursday = day{4, "THU", "Thursday"}
Friday = day{5, "FRI", "Friday"}; Friday = day{5, "FRI", "Friday"}
Saturday = day{6, "SAT", "Saturday"}; Saturday = day{6, "SAT", "Saturday"}
) )
} }
@ -464,14 +464,14 @@ func _() {
"print": nil, "print": nil,
"println": nil, "println": nil,
}, },
}; }
} }
func _() { func _() {
var _ = T{ var _ = T{
a, // must introduce trailing comma a, // must introduce trailing comma
}; }
} }
@ -501,13 +501,10 @@ func _() { // opening "{" must move up
// in the following declarations, a comment must not // in the following declarations, a comment must not
// introduce a newline and thus cause a semicolon to // introduce a newline and thus cause a semicolon to
// be inserted // be inserted
const _ T = x // comment const _ T = x // comment
; const _ = x // comment
const _ = x // comment
;
type _ T // comment type _ T // comment
;
type _ struct // comment type _ struct // comment
{ {
@ -517,20 +514,18 @@ func _() { // opening "{" must move up
} }
type _ * // comment type _ * // comment
T; T
type _ [ // comment type _ [ // comment
]T; ]T
type _ [ // comment type _ [ // comment
10]T; 10]T
type _ chan // comment type _ chan // comment
T; T
type _ map // comment type _ map // comment
[T]T; [T]T
var _ T // comment var _ T // comment
; var _ T = x // comment
var _ T = x // comment
;
var _ struct // comment var _ struct // comment
{ {
@ -540,16 +535,15 @@ func _() { // opening "{" must move up
} }
var _ * // comment var _ * // comment
T; T
var _ [ // comment var _ [ // comment
]T; ]T
var _ [ // comment var _ [ // comment
10]T; 10]T
var _ chan // comment var _ chan // comment
T; T
var _ map // comment var _ map // comment
[T]T; [T]T
var _ = x // comment var _ = x // comment
;
} }

366
src/pkg/go/printer/testdata/expressions.golden vendored
View File

@ -5,233 +5,233 @@
package expressions package expressions
type T struct { type T struct {
x, y, z int; x, y, z int
} }
var ( var (
a, b, c, d, e int; a, b, c, d, e int
under_bar int; under_bar int
longIdentifier1, longIdentifier2, longIdentifier3 int; longIdentifier1, longIdentifier2, longIdentifier3 int
t0, t1, t2 T; t0, t1, t2 T
s string; s string
p *int; p *int
) )
func _() { func _() {
// no spaces around simple or parenthesized expressions // no spaces around simple or parenthesized expressions
_ = a + b; _ = a + b
_ = a + b + c; _ = a + b + c
_ = a + b - c; _ = a + b - c
_ = a - b - c; _ = a - b - c
_ = a + (b * c); _ = a + (b * c)
_ = a + (b / c); _ = a + (b / c)
_ = a - (b % c); _ = a - (b % c)
_ = 1 + a; _ = 1 + a
_ = a + 1; _ = a + 1
_ = a + b + 1; _ = a + b + 1
_ = s[1:2]; _ = s[1:2]
_ = s[a:b]; _ = s[a:b]
_ = s[0:len(s)]; _ = s[0:len(s)]
_ = s[0] << 1; _ = s[0] << 1
_ = (s[0] << 1) & 0xf; _ = (s[0] << 1) & 0xf
_ = s[0]<<2 | s[1]>>4; _ = s[0]<<2 | s[1]>>4
_ = "foo" + s; _ = "foo" + s
_ = s + "foo"; _ = s + "foo"
_ = 'a' + 'b'; _ = 'a' + 'b'
_ = len(s) / 2; _ = len(s) / 2
_ = len(t0.x) / a; _ = len(t0.x) / a
// spaces around expressions of different precedence or expressions containing spaces // spaces around expressions of different precedence or expressions containing spaces
_ = a + -b; _ = a + -b
_ = a - ^b; _ = a - ^b
_ = a / *p; _ = a / *p
_ = a + b*c; _ = a + b*c
_ = 1 + b*c; _ = 1 + b*c
_ = a + 2*c; _ = a + 2*c
_ = a + c*2; _ = a + c*2
_ = 1 + 2*3; _ = 1 + 2*3
_ = s[1 : 2*3]; _ = s[1 : 2*3]
_ = s[a : b-c]; _ = s[a : b-c]
_ = s[0:]; _ = s[0:]
_ = s[a+b]; _ = s[a+b]
_ = s[a+b:]; _ = s[a+b:]
_ = a[a<<b+1]; _ = a[a<<b+1]
_ = a[a<<b+1:]; _ = a[a<<b+1:]
_ = s[a+b : len(s)]; _ = s[a+b : len(s)]
_ = s[len(s):-a]; _ = s[len(s):-a]
_ = s[a : len(s)+1]; _ = s[a : len(s)+1]
_ = s[a:len(s)+1] + s; _ = s[a:len(s)+1] + s
// spaces around operators with equal or lower precedence than comparisons // spaces around operators with equal or lower precedence than comparisons
_ = a == b; _ = a == b
_ = a != b; _ = a != b
_ = a > b; _ = a > b
_ = a >= b; _ = a >= b
_ = a < b; _ = a < b
_ = a <= b; _ = a <= b
_ = a < b && c > d; _ = a < b && c > d
_ = a < b || c > d; _ = a < b || c > d
// spaces around "long" operands // spaces around "long" operands
_ = a + longIdentifier1; _ = a + longIdentifier1
_ = longIdentifier1 + a; _ = longIdentifier1 + a
_ = longIdentifier1 + longIdentifier2*longIdentifier3; _ = longIdentifier1 + longIdentifier2*longIdentifier3
_ = s + "a longer string"; _ = s + "a longer string"
// some selected cases // some selected cases
_ = a + t0.x; _ = a + t0.x
_ = a + t0.x + t1.x*t2.x; _ = a + t0.x + t1.x*t2.x
_ = a + b + c + d + e + 2*3; _ = a + b + c + d + e + 2*3
_ = a + b + c + 2*3 + d + e; _ = a + b + c + 2*3 + d + e
_ = (a + b + c) * 2; _ = (a + b + c) * 2
_ = a - b + c - d + (a + b + c) + d&e; _ = a - b + c - d + (a + b + c) + d&e
_ = under_bar - 1; _ = under_bar - 1
_ = Open(dpath+"/file", O_WRONLY|O_CREAT, 0666); _ = Open(dpath+"/file", O_WRONLY|O_CREAT, 0666)
_ = int(c0&_Mask4)<<18 | int(c1&_Maskx)<<12 | int(c2&_Maskx)<<6 | int(c3&_Maskx); _ = int(c0&_Mask4)<<18 | int(c1&_Maskx)<<12 | int(c2&_Maskx)<<6 | int(c3&_Maskx)
} }
func _() { func _() {
a + b; a + b
a + b + c; a + b + c
a + b*c; a + b*c
a + (b * c); a + (b * c)
(a + b) * c; (a + b) * c
a + (b * c * d); a + (b * c * d)
a + (b*c + d); a + (b*c + d)
1 << x; 1 << x
-1 << x; -1 << x
1<<x - 1; 1<<x - 1
-1<<x - 1; -1<<x - 1
f(a + b); f(a + b)
f(a + b + c); f(a + b + c)
f(a + b*c); f(a + b*c)
f(a + (b * c)); f(a + (b * c))
f(1<<x-1, 1<<x-2); f(1<<x-1, 1<<x-2)
1<<d.logWindowSize - 1; 1<<d.logWindowSize - 1
buf = make(x, 2*cap(b.buf)+n); buf = make(x, 2*cap(b.buf)+n)
dst[i*3+2] = dbuf[0] << 2; dst[i*3+2] = dbuf[0] << 2
dst[i*3+2] = dbuf[0]<<2 | dbuf[1]>>4; 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]
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]); f(b.buf[0 : b.off+m+n])
signed += ' ' * 8; signed += ' ' * 8
tw.octal(header[148:155], chksum); tw.octal(header[148:155], chksum)
x > 0 && i >= 0; x > 0 && i >= 0
x1, x0 := x>>w2, x&m2; x1, x0 := x>>w2, x&m2
z0 = t1<<w2 + t0; z0 = t1<<w2 + t0
z1 = (t1 + t0>>w2) >> w2; z1 = (t1 + t0>>w2) >> w2
q1, r1 := x1/d1, x1%d1; q1, r1 := x1/d1, x1%d1
r1 = r1*b2 | x0>>w2; r1 = r1*b2 | x0>>w2
x1 = (x1 << z) | (x0 >> (uint(w) - z)); x1 = (x1 << z) | (x0 >> (uint(w) - z))
x1 = x1<<z | x0>>(uint(w)-z); x1 = x1<<z | x0>>(uint(w)-z)
buf[0 : len(buf)+1]; buf[0 : len(buf)+1]
buf[0 : n+1]; buf[0 : n+1]
a, b = b, a; a, b = b, a
a = b + c; a = b + c
a = b*c + d; a = b*c + d
a*b + c; a*b + c
a - b - c; a - b - c
a - (b - c); a - (b - c)
a - b*c; a - b*c
a - (b * c); a - (b * c)
a * b / c; a * b / c
a / *b; a / *b
x[a|^b]; x[a|^b]
x[a / *b]; x[a / *b]
a & ^b; a & ^b
a + +b; a + +b
a - -b; a - -b
x[a*-b]; x[a*-b]
x[a + +b]; x[a + +b]
x ^ y ^ z; x ^ y ^ z
b[a>>24] ^ b[(a>>16)&0xFF] ^ b[(a>>8)&0xFF] ^ b[a&0xFF]; b[a>>24] ^ b[(a>>16)&0xFF] ^ b[(a>>8)&0xFF] ^ b[a&0xFF]
len(longVariableName) * 2; len(longVariableName) * 2
token(matchType + xlength<<lengthShift + xoffset); token(matchType + xlength<<lengthShift + xoffset)
} }
func _() { func _() {
_ = T{}; _ = T{}
_ = struct{}{}; _ = struct{}{}
_ = [10]T{}; _ = [10]T{}
_ = [...]T{}; _ = [...]T{}
_ = []T{}; _ = []T{}
_ = map[int]T{}; _ = map[int]T{}
_ = (T){}; _ = (T){}
_ = (struct{}){}; _ = (struct{}){}
_ = ([10]T){}; _ = ([10]T){}
_ = ([...]T){}; _ = ([...]T){}
_ = ([]T){}; _ = ([]T){}
_ = (map[int]T){}; _ = (map[int]T){}
} }
// one-line structs/interfaces in composite literals (up to a threshold) // one-line structs/interfaces in composite literals (up to a threshold)
func _() { func _() {
_ = struct{}{}; _ = struct{}{}
_ = struct{ x int }{0}; _ = struct{ x int }{0}
_ = struct{ x, y, z int }{0, 1, 2}; _ = struct{ x, y, z int }{0, 1, 2}
_ = struct{ int }{0}; _ = struct{ int }{0}
_ = struct { _ = struct {
s struct { s struct {
int; int
}; }
}{struct{ int }{0}}; // compositeLit context not propagated => multiLine result }{struct{ int }{0}} // compositeLit context not propagated => multiLine result
} }
func _() { func _() {
// do not modify literals // do not modify literals
_ = "tab1 tab2 tab3 end"; // string contains 3 tabs _ = "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 _ = "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 _ = "" // this comment should be aligned with the one on the previous line
_ = ``; _ = ``
_ = ` _ = `
`; `
_ = `foo _ = `foo
bar`; bar`
} }
func _() { func _() {
// one-line function literals // one-line function literals
_ = func() {}; _ = func() {}
_ = func() int { return 0 }; _ = func() int { return 0 }
_ = func(x, y int) bool { return x < y }; _ = func(x, y int) bool { return x < y }
f(func() {}); f(func() {})
f(func() int { return 0 }); f(func() int { return 0 })
f(func(x, y int) bool { return x < y }); f(func(x, y int) bool { return x < y })
} }
func _() { func _() {
// do not add extra indentation to multi-line string lists // do not add extra indentation to multi-line string lists
_ = "foo" + "bar"; _ = "foo" + "bar"
_ = "foo" + _ = "foo" +
"bar" + "bar" +
"bah"; "bah"
_ = []string{ _ = []string{
"abc" + "abc" +
"def", "def",
"foo" + "foo" +
"bar", "bar",
}; }
} }
@ -257,18 +257,18 @@ func _() {
_ = F1 + _ = F1 +
`string = "%s";` + `string = "%s";` +
`ptr = *;` + `ptr = *;` +
`datafmt.T2 = s ["-" p "-"];`; `datafmt.T2 = s ["-" p "-"];`
_ = _ =
`datafmt "datafmt";` + `datafmt "datafmt";` +
`default = "%v";` + `default = "%v";` +
`array = *;` + `array = *;` +
`datafmt.T3 = s {" " a a / ","};`; `datafmt.T3 = s {" " a a / ","};`
_ = `datafmt "datafmt";` + _ = `datafmt "datafmt";` +
`default = "%v";` + `default = "%v";` +
`array = *;` + `array = *;` +
`datafmt.T3 = s {" " a a / ","};`; `datafmt.T3 = s {" " a a / ","};`
} }
@ -276,24 +276,24 @@ func _() {
// respect source lines in multi-line expressions // respect source lines in multi-line expressions
_ = a + _ = a +
b + b +
c; c
_ = a < b || _ = a < b ||
b < a; b < a
_ = "933262154439441526816992388562667004907159682643816214685929" + _ = "933262154439441526816992388562667004907159682643816214685929" +
"638952175999932299156089414639761565182862536979208272237582" + "638952175999932299156089414639761565182862536979208272237582" +
"51185210916864000000000000000000000000"; // 100! "51185210916864000000000000000000000000" // 100!
_ = "170141183460469231731687303715884105727"; // prime _ = "170141183460469231731687303715884105727" // prime
} }
// Alignment after overlong lines // Alignment after overlong lines
const ( const (
_ = "991"; _ = "991"
_ = "2432902008176640000"; // 20! _ = "2432902008176640000" // 20!
_ = "933262154439441526816992388562667004907159682643816214685929" + _ = "933262154439441526816992388562667004907159682643816214685929" +
"638952175999932299156089414639761565182862536979208272237582" + "638952175999932299156089414639761565182862536979208272237582" +
"51185210916864000000000000000000000000"; // 100! "51185210916864000000000000000000000000" // 100!
_ = "170141183460469231731687303715884105727"; // prime _ = "170141183460469231731687303715884105727" // prime
) )
@ -301,11 +301,11 @@ const (
func _() { func _() {
_ = a + // comment _ = a + // comment
b + // comment b + // comment
c; c
_ = "a" + // comment _ = "a" + // comment
"b" + // comment "b" + // comment
"c"; "c"
_ = "ba0408" + "7265717569726564"; // field 71, encoding 2, string "required" _ = "ba0408" + "7265717569726564" // field 71, encoding 2, string "required"
} }
@ -313,25 +313,27 @@ func _() {
func _() { func _() {
f(1, f(1,
2, 2,
3); 3)
f(1, f(1,
2, 2,
3); 3,
)
// TODO(gri) the cases below are not correct yet // TODO(gri) the cases below are not correct yet
f(1, f(1,
2, 2,
3); // comment 3) // comment
f(1, f(1,
2, 2,
3 // comment 3, // comment
); )
f(1, f(1,
2, 2,
3); // comment 3) // comment
f(1, f(1,
2, 2,
3 // comment 3 // comment
); ,
)
} }
@ -353,8 +355,8 @@ func (p *parser) charClass() {
// respect source lines in multi-line expressions // respect source lines in multi-line expressions
if cc.negate && len(cc.ranges) == 2 && if cc.negate && len(cc.ranges) == 2 &&
cc.ranges[0] == '\n' && cc.ranges[1] == '\n' { cc.ranges[0] == '\n' && cc.ranges[1] == '\n' {
nl := new(_NotNl); nl := new(_NotNl)
p.re.add(nl); p.re.add(nl)
} }
} }

366
src/pkg/go/printer/testdata/expressions.raw vendored
View File

@ -5,233 +5,233 @@
package expressions package expressions
type T struct { type T struct {
x, y, z int; x, y, z int
} }
var ( var (
a, b, c, d, e int; a, b, c, d, e int
under_bar int; under_bar int
longIdentifier1, longIdentifier2, longIdentifier3 int; longIdentifier1, longIdentifier2, longIdentifier3 int
t0, t1, t2 T; t0, t1, t2 T
s string; s string
p *int; p *int
) )
func _() { func _() {
// no spaces around simple or parenthesized expressions // no spaces around simple or parenthesized expressions
_ = a + b; _ = a + b
_ = a + b + c; _ = a + b + c
_ = a + b - c; _ = a + b - c
_ = a - b - c; _ = a - b - c
_ = a + (b * c); _ = a + (b * c)
_ = a + (b / c); _ = a + (b / c)
_ = a - (b % c); _ = a - (b % c)
_ = 1 + a; _ = 1 + a
_ = a + 1; _ = a + 1
_ = a + b + 1; _ = a + b + 1
_ = s[1:2]; _ = s[1:2]
_ = s[a:b]; _ = s[a:b]
_ = s[0:len(s)]; _ = s[0:len(s)]
_ = s[0] << 1; _ = s[0] << 1
_ = (s[0] << 1) & 0xf; _ = (s[0] << 1) & 0xf
_ = s[0]<<2 | s[1]>>4; _ = s[0]<<2 | s[1]>>4
_ = "foo" + s; _ = "foo" + s
_ = s + "foo"; _ = s + "foo"
_ = 'a' + 'b'; _ = 'a' + 'b'
_ = len(s) / 2; _ = len(s) / 2
_ = len(t0.x) / a; _ = len(t0.x) / a
// spaces around expressions of different precedence or expressions containing spaces // spaces around expressions of different precedence or expressions containing spaces
_ = a + -b; _ = a + -b
_ = a - ^b; _ = a - ^b
_ = a / *p; _ = a / *p
_ = a + b*c; _ = a + b*c
_ = 1 + b*c; _ = 1 + b*c
_ = a + 2*c; _ = a + 2*c
_ = a + c*2; _ = a + c*2
_ = 1 + 2*3; _ = 1 + 2*3
_ = s[1 : 2*3]; _ = s[1 : 2*3]
_ = s[a : b-c]; _ = s[a : b-c]
_ = s[0:]; _ = s[0:]
_ = s[a+b]; _ = s[a+b]
_ = s[a+b:]; _ = s[a+b:]
_ = a[a<<b+1]; _ = a[a<<b+1]
_ = a[a<<b+1:]; _ = a[a<<b+1:]
_ = s[a+b : len(s)]; _ = s[a+b : len(s)]
_ = s[len(s):-a]; _ = s[len(s):-a]
_ = s[a : len(s)+1]; _ = s[a : len(s)+1]
_ = s[a:len(s)+1] + s; _ = s[a:len(s)+1] + s
// spaces around operators with equal or lower precedence than comparisons // spaces around operators with equal or lower precedence than comparisons
_ = a == b; _ = a == b
_ = a != b; _ = a != b
_ = a > b; _ = a > b
_ = a >= b; _ = a >= b
_ = a < b; _ = a < b
_ = a <= b; _ = a <= b
_ = a < b && c > d; _ = a < b && c > d
_ = a < b || c > d; _ = a < b || c > d
// spaces around "long" operands // spaces around "long" operands
_ = a + longIdentifier1; _ = a + longIdentifier1
_ = longIdentifier1 + a; _ = longIdentifier1 + a
_ = longIdentifier1 + longIdentifier2*longIdentifier3; _ = longIdentifier1 + longIdentifier2*longIdentifier3
_ = s + "a longer string"; _ = s + "a longer string"
// some selected cases // some selected cases
_ = a + t0.x; _ = a + t0.x
_ = a + t0.x + t1.x*t2.x; _ = a + t0.x + t1.x*t2.x
_ = a + b + c + d + e + 2*3; _ = a + b + c + d + e + 2*3
_ = a + b + c + 2*3 + d + e; _ = a + b + c + 2*3 + d + e
_ = (a + b + c) * 2; _ = (a + b + c) * 2
_ = a - b + c - d + (a + b + c) + d&e; _ = a - b + c - d + (a + b + c) + d&e
_ = under_bar - 1; _ = under_bar - 1
_ = Open(dpath+"/file", O_WRONLY|O_CREAT, 0666); _ = Open(dpath+"/file", O_WRONLY|O_CREAT, 0666)
_ = int(c0&_Mask4)<<18 | int(c1&_Maskx)<<12 | int(c2&_Maskx)<<6 | int(c3&_Maskx); _ = int(c0&_Mask4)<<18 | int(c1&_Maskx)<<12 | int(c2&_Maskx)<<6 | int(c3&_Maskx)
} }
func _() { func _() {
a + b; a + b
a + b + c; a + b + c
a + b*c; a + b*c
a + (b * c); a + (b * c)
(a + b) * c; (a + b) * c
a + (b * c * d); a + (b * c * d)
a + (b*c + d); a + (b*c + d)
1 << x; 1 << x
-1 << x; -1 << x
1<<x - 1; 1<<x - 1
-1<<x - 1; -1<<x - 1
f(a + b); f(a + b)
f(a + b + c); f(a + b + c)
f(a + b*c); f(a + b*c)
f(a + (b * c)); f(a + (b * c))
f(1<<x-1, 1<<x-2); f(1<<x-1, 1<<x-2)
1<<d.logWindowSize - 1; 1<<d.logWindowSize - 1
buf = make(x, 2*cap(b.buf)+n); buf = make(x, 2*cap(b.buf)+n)
dst[i*3+2] = dbuf[0] << 2; dst[i*3+2] = dbuf[0] << 2
dst[i*3+2] = dbuf[0]<<2 | dbuf[1]>>4; 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]
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]); f(b.buf[0 : b.off+m+n])
signed += ' ' * 8; signed += ' ' * 8
tw.octal(header[148:155], chksum); tw.octal(header[148:155], chksum)
x > 0 && i >= 0; x > 0 && i >= 0
x1, x0 := x>>w2, x&m2; x1, x0 := x>>w2, x&m2
z0 = t1<<w2 + t0; z0 = t1<<w2 + t0
z1 = (t1 + t0>>w2) >> w2; z1 = (t1 + t0>>w2) >> w2
q1, r1 := x1/d1, x1%d1; q1, r1 := x1/d1, x1%d1
r1 = r1*b2 | x0>>w2; r1 = r1*b2 | x0>>w2
x1 = (x1 << z) | (x0 >> (uint(w) - z)); x1 = (x1 << z) | (x0 >> (uint(w) - z))
x1 = x1<<z | x0>>(uint(w)-z); x1 = x1<<z | x0>>(uint(w)-z)
buf[0 : len(buf)+1]; buf[0 : len(buf)+1]
buf[0 : n+1]; buf[0 : n+1]
a, b = b, a; a, b = b, a
a = b + c; a = b + c
a = b*c + d; a = b*c + d
a*b + c; a*b + c
a - b - c; a - b - c
a - (b - c); a - (b - c)
a - b*c; a - b*c
a - (b * c); a - (b * c)
a * b / c; a * b / c
a / *b; a / *b
x[a|^b]; x[a|^b]
x[a / *b]; x[a / *b]
a & ^b; a & ^b
a + +b; a + +b
a - -b; a - -b
x[a*-b]; x[a*-b]
x[a + +b]; x[a + +b]
x ^ y ^ z; x ^ y ^ z
b[a>>24] ^ b[(a>>16)&0xFF] ^ b[(a>>8)&0xFF] ^ b[a&0xFF]; b[a>>24] ^ b[(a>>16)&0xFF] ^ b[(a>>8)&0xFF] ^ b[a&0xFF]
len(longVariableName) * 2; len(longVariableName) * 2
token(matchType + xlength<<lengthShift + xoffset); token(matchType + xlength<<lengthShift + xoffset)
} }
func _() { func _() {
_ = T{}; _ = T{}
_ = struct{}{}; _ = struct{}{}
_ = [10]T{}; _ = [10]T{}
_ = [...]T{}; _ = [...]T{}
_ = []T{}; _ = []T{}
_ = map[int]T{}; _ = map[int]T{}
_ = (T){}; _ = (T){}
_ = (struct{}){}; _ = (struct{}){}
_ = ([10]T){}; _ = ([10]T){}
_ = ([...]T){}; _ = ([...]T){}
_ = ([]T){}; _ = ([]T){}
_ = (map[int]T){}; _ = (map[int]T){}
} }
// one-line structs/interfaces in composite literals (up to a threshold) // one-line structs/interfaces in composite literals (up to a threshold)
func _() { func _() {
_ = struct{}{}; _ = struct{}{}
_ = struct{ x int }{0}; _ = struct{ x int }{0}
_ = struct{ x, y, z int }{0, 1, 2}; _ = struct{ x, y, z int }{0, 1, 2}
_ = struct{ int }{0}; _ = struct{ int }{0}
_ = struct { _ = struct {
s struct { s struct {
int; int
}; }
}{struct{ int }{0}}; // compositeLit context not propagated => multiLine result }{struct{ int }{0}} // compositeLit context not propagated => multiLine result
} }
func _() { func _() {
// do not modify literals // do not modify literals
_ = "tab1 tab2 tab3 end"; // string contains 3 tabs _ = "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 _ = "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 _ = "" // this comment should be aligned with the one on the previous line
_ = ``; _ = ``
_ = ` _ = `
`; `
_ = `foo _ = `foo
bar`; bar`
} }
func _() { func _() {
// one-line function literals // one-line function literals
_ = func() {}; _ = func() {}
_ = func() int { return 0 }; _ = func() int { return 0 }
_ = func(x, y int) bool { return x < y }; _ = func(x, y int) bool { return x < y }
f(func() {}); f(func() {})
f(func() int { return 0 }); f(func() int { return 0 })
f(func(x, y int) bool { return x < y }); f(func(x, y int) bool { return x < y })
} }
func _() { func _() {
// do not add extra indentation to multi-line string lists // do not add extra indentation to multi-line string lists
_ = "foo" + "bar"; _ = "foo" + "bar"
_ = "foo" + _ = "foo" +
"bar" + "bar" +
"bah"; "bah"
_ = []string{ _ = []string{
"abc" + "abc" +
"def", "def",
"foo" + "foo" +
"bar", "bar",
}; }
} }
@ -257,18 +257,18 @@ func _() {
_ = F1 + _ = F1 +
`string = "%s";` + `string = "%s";` +
`ptr = *;` + `ptr = *;` +
`datafmt.T2 = s ["-" p "-"];`; `datafmt.T2 = s ["-" p "-"];`
_ = _ =
`datafmt "datafmt";` + `datafmt "datafmt";` +
`default = "%v";` + `default = "%v";` +
`array = *;` + `array = *;` +
`datafmt.T3 = s {" " a a / ","};`; `datafmt.T3 = s {" " a a / ","};`
_ = `datafmt "datafmt";` + _ = `datafmt "datafmt";` +
`default = "%v";` + `default = "%v";` +
`array = *;` + `array = *;` +
`datafmt.T3 = s {" " a a / ","};`; `datafmt.T3 = s {" " a a / ","};`
} }
@ -276,24 +276,24 @@ func _() {
// respect source lines in multi-line expressions // respect source lines in multi-line expressions
_ = a + _ = a +
b + b +
c; c
_ = a < b || _ = a < b ||
b < a; b < a
_ = "933262154439441526816992388562667004907159682643816214685929" + _ = "933262154439441526816992388562667004907159682643816214685929" +
"638952175999932299156089414639761565182862536979208272237582" + "638952175999932299156089414639761565182862536979208272237582" +
"51185210916864000000000000000000000000"; // 100! "51185210916864000000000000000000000000" // 100!
_ = "170141183460469231731687303715884105727"; // prime _ = "170141183460469231731687303715884105727" // prime
} }
// Alignment after overlong lines // Alignment after overlong lines
const ( const (
_ = "991"; _ = "991"
_ = "2432902008176640000"; // 20! _ = "2432902008176640000" // 20!
_ = "933262154439441526816992388562667004907159682643816214685929" + _ = "933262154439441526816992388562667004907159682643816214685929" +
"638952175999932299156089414639761565182862536979208272237582" + "638952175999932299156089414639761565182862536979208272237582" +
"51185210916864000000000000000000000000"; // 100! "51185210916864000000000000000000000000" // 100!
_ = "170141183460469231731687303715884105727"; // prime _ = "170141183460469231731687303715884105727" // prime
) )
@ -301,11 +301,11 @@ const (
func _() { func _() {
_ = a + // comment _ = a + // comment
b + // comment b + // comment
c; c
_ = "a" + // comment _ = "a" + // comment
"b" + // comment "b" + // comment
"c"; "c"
_ = "ba0408" + "7265717569726564"; // field 71, encoding 2, string "required" _ = "ba0408" + "7265717569726564" // field 71, encoding 2, string "required"
} }
@ -313,25 +313,27 @@ func _() {
func _() { func _() {
f(1, f(1,
2, 2,
3); 3)
f(1, f(1,
2, 2,
3); 3,
)
// TODO(gri) the cases below are not correct yet // TODO(gri) the cases below are not correct yet
f(1, f(1,
2, 2,
3); // comment 3) // comment
f(1, f(1,
2, 2,
3 // comment 3, // comment
); )
f(1, f(1,
2, 2,
3); // comment 3) // comment
f(1, f(1,
2, 2,
3 // comment 3 // comment
); ,
)
} }
@ -353,8 +355,8 @@ func (p *parser) charClass() {
// respect source lines in multi-line expressions // respect source lines in multi-line expressions
if cc.negate && len(cc.ranges) == 2 && if cc.negate && len(cc.ranges) == 2 &&
cc.ranges[0] == '\n' && cc.ranges[1] == '\n' { cc.ranges[0] == '\n' && cc.ranges[1] == '\n' {
nl := new(_NotNl); nl := new(_NotNl)
p.re.add(nl); p.re.add(nl)
} }
} }

52
src/pkg/go/printer/testdata/linebreaks.golden vendored
View File

@ -5,23 +5,23 @@
package linebreaks package linebreaks
import ( import (
"bytes"; "bytes"
"fmt"; "fmt"
"io"; "io"
"os"; "os"
"reflect"; "reflect"
"strings"; "strings"
"testing"; "testing"
) )
type writerTestEntry struct { type writerTestEntry struct {
header *Header; header *Header
contents string; contents string
} }
type writerTest struct { type writerTest struct {
file string; // filename of expected output file string // filename of expected output
entries []*writerTestEntry; entries []*writerTestEntry
} }
var writerTests = []*writerTest{ var writerTests = []*writerTest{
@ -83,8 +83,8 @@ var writerTests = []*writerTest{
} }
type untarTest struct { type untarTest struct {
file string; file string
headers []*Header; headers []*Header
} }
var untarTests = []*untarTest{ var untarTests = []*untarTest{
@ -186,36 +186,36 @@ func usage() {
fmt.Fprintf(os.Stderr, fmt.Fprintf(os.Stderr,
// TODO(gri): the 2nd string of this string list should not be indented // TODO(gri): the 2nd string of this string list should not be indented
"usage: godoc package [name ...]\n"+ "usage: godoc package [name ...]\n"+
" godoc -http=:6060\n"); " godoc -http=:6060\n")
flag.PrintDefaults(); flag.PrintDefaults()
os.Exit(2); os.Exit(2)
} }
func TestReader(t *testing.T) { func TestReader(t *testing.T) {
testLoop: testLoop:
for i, test := range untarTests { for i, test := range untarTests {
f, err := os.Open(test.file, os.O_RDONLY, 0444); f, err := os.Open(test.file, os.O_RDONLY, 0444)
if err != nil { if err != nil {
t.Errorf("test %d: Unexpected error: %v", i, err); t.Errorf("test %d: Unexpected error: %v", i, err)
continue; continue
} }
tr := NewReader(f); tr := NewReader(f)
for j, header := range test.headers { for j, header := range test.headers {
hdr, err := tr.Next(); hdr, err := tr.Next()
if err != nil || hdr == nil { if err != nil || hdr == nil {
t.Errorf("test %d, entry %d: Didn't get entry: %v", i, j, err); t.Errorf("test %d, entry %d: Didn't get entry: %v", i, j, err)
f.Close(); f.Close()
continue testLoop; continue testLoop
} }
if !reflect.DeepEqual(hdr, header) { if !reflect.DeepEqual(hdr, header) {
t.Errorf("test %d, entry %d: Incorrect header:\nhave %+v\nwant %+v", t.Errorf("test %d, entry %d: Incorrect header:\nhave %+v\nwant %+v",
i, j, *hdr, *header) i, j, *hdr, *header)
} }
} }
hdr, err := tr.Next(); hdr, err := tr.Next()
if hdr != nil || err != nil { if hdr != nil || err != nil {
t.Errorf("test %d: Unexpected entry or error: hdr=%v err=%v", i, err) t.Errorf("test %d: Unexpected entry or error: hdr=%v err=%v", i, err)
} }
f.Close(); f.Close()
} }
} }

38
src/pkg/go/printer/testdata/statements.golden vendored
View File

@ -64,16 +64,16 @@ func _() {
switch x := 0; x { switch x := 0; x {
case 1: case 1:
use(x); use(x)
use(x); // followed by an empty line use(x) // followed by an empty line
case 2: // followed by an empty line case 2: // followed by an empty line
use(x) // followed by an empty line use(x) // followed by an empty line
case 3: // no empty lines case 3: // no empty lines
use(x); use(x)
use(x); use(x)
} }
switch x { switch x {
@ -152,20 +152,20 @@ func _() {
// line at a time. // line at a time.
func _() { func _() {
const _ = 0; const _ = 0
const _ = 1; const _ = 1
type _ int; type _ int
type _ float; type _ float
var _ = 0; var _ = 0
var x = 1; var x = 1
// Each use(x) call below should have at most one empty line before and after. // Each use(x) call below should have at most one empty line before and after.
use(x); use(x)
if x < x { if x < x {
@ -206,9 +206,9 @@ L: _ = 0
func _() { func _() {
for { for {
L1: _ = 0; L1: _ = 0
L2: L2:
_ = 0; _ = 0
} }
} }
@ -216,9 +216,9 @@ func _() {
func _() { func _() {
// this comment should be indented // this comment should be indented
for { for {
L1: _ = 0; L1: _ = 0
L2: L2:
_ = 0; _ = 0
} }
} }
@ -227,14 +227,14 @@ func _() {
if { if {
_ = 0 _ = 0
} }
_ = 0; // the indentation here should not be affected by the long label name _ = 0 // the indentation here should not be affected by the long label name
AnOverlongLabel: AnOverlongLabel:
_ = 0; _ = 0
if { if {
_ = 0 _ = 0
} }
_ = 0; _ = 0
L: _ = 0; L: _ = 0
} }