go/ast 'else' keyword Position

[Paul Jolly]

Apologies if I am missing something obvious, but is there a way to
determine the token.Position of the 'else' keyword in a go/ast IfStmt?

Given the following:

package main
func main() {
if true {
} else {
}
}

The relevant part of the AST looks like this:

27 . . . . . 0: *ast.IfStmt {
28 . . . . . . If:
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:3:3
29 . . . . . . Cond: *ast.Ident {
30 . . . . . . . NamePos:
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:3:6
31 . . . . . . . Name: "true"
32 . . . . . . }
33 . . . . . . Body: *ast.BlockStmt {
34 . . . . . . . Lbrace:
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:3:11
35 . . . . . . . Rbrace:
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:4:3
36 . . . . . . }
37 . . . . . . Else: *ast.BlockStmt {
38 . . . . . . . Lbrace:
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:4:10
39 . . . . . . . Rbrace:
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:5:3
40 . . . . . . }
41 . . . . . }

Clearly the 'else' keyword is somewhere between the Rbrace of the IfStmt
Body and the Lbrace of the Else.

But is there a way to know exactly?

Thanks

[Rob Pike]

No, although if the file is gofmt'ed it's five bytes before the
opening brace, or two bytes after the closing brace of the "if" block.

-rob

Apologies if I am missing something obvious, but is there a way to determine
the token.Position of the 'else' keyword in a go/ast IfStmt?
package main
func main() {
if true {
} else {
}
}
27 . . . . . 0: *ast.IfStmt {
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:3:3
29 . . . . . . Cond: *ast.Ident {
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:3:6
31 . . . . . . . Name: "true"
32 . . . . . . }
33 . . . . . . Body: *ast.BlockStmt {
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:3:11
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:4:3
36 . . . . . . }
37 . . . . . . Else: *ast.BlockStmt {
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:4:10
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:5:3
40 . . . . . . }
41 . . . . . }
Clearly the 'else' keyword is somewhere between the Rbrace of the IfStmt
Body and the Lbrace of the Else.
But is there a way to know exactly?
Thanks
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[Paul Jolly]

Thanks for confirming.. and for the quick response

Post by Rob Pike
No, although if the file is gofmt'ed it's five bytes before the
opening brace, or two bytes after the closing brace of the "if" block.
-rob

Post by Paul Jolly
Apologies if I am missing something obvious, but is there a way to

determine

Post by Paul Jolly
the token.Position of the 'else' keyword in a go/ast IfStmt?
package main
func main() {
if true {
} else {
}
}
27 . . . . . 0: *ast.IfStmt {
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:3:3
29 . . . . . . Cond: *ast.Ident {
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:3:6
31 . . . . . . . Name: "true"
32 . . . . . . }
33 . . . . . . Body: *ast.BlockStmt {
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:3:11
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:4:3
36 . . . . . . }
37 . . . . . . Else: *ast.BlockStmt {
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:4:10
/tmp/67948a64-58db-625e-1cf6-ed449ec3e2cf.go:5:3
40 . . . . . . }
41 . . . . . }
Clearly the 'else' keyword is somewhere between the Rbrace of the IfStmt
Body and the Lbrace of the Else.
But is there a way to know exactly?
Thanks
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You received this message because you are subscribed to the Google Groups
"golang-nuts" group.
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For more options, visit https://groups.google.com/d/optout.