Feature Request, Not Show Offset Chars at Error Line!

[QuestionPython]

Hi
Feature Request, Not Show Offset Chars at Error Line(yycolumn)!

Example error text :

example/test.ank:11: syntax error:

example/test.ank:11:** syntax error:

so 11:** , here ** why empty?
error of (lexer and parser) both just show line and not show offset current error line!

carefull link for example , have startColumn and column :

• https://github.com/iNamik/go_lexer/blob/master/lexer.go
• https://github.com/awalterschulze/gographviz/blob/master/lexer/lexer.go
• ... and also can see parser files of projects.

i also work on this , file anko.go :

fmt.Fprintf(os.Stderr, "%s:%d: %s\n", source, e.Pos.Line, err)
changed to :

fmt.Fprintf(os.Stderr, "%s:%d:%d %s\n", source, e.Pos.Line,e.Pos.Column, err)

so now also show offset/column of error. 👍 👍

---

One-Test

now again compile go build anko.go and next test with a input :

print(5***2)
print("\n")

file : http://ilestra.com/input-1.txt

now error is : example/test.ank:1:12 syntax error: unexpected ')'
say in offset 12 have error but in offset 12 code end.
and error of me available in offset 10. 👎 👎

---

Two-Test

also now with another test input :

print(456456);print(456***);print(5**2)
print("\n")

file : http://ilestra.com/input-2.txt

also now error say : example/test.ank:1:27 syntax error: unexpected ')'
but offset/column of my error available in 25 or 26.

---

Tree-Test

also again test with input :

print(456456);print( @#$%^&*(((((( ));print(5**2)
print "\n"

file : http://ilestra.com/input-3.txt

error now: example/test.ank:1:29 syntax error: unexpected $end

Output of column/offset is expected to be 28 or 29

---

Github delete space of my test's code. so i also upload file.

I think Lexer need some changes.
may problem is $$.SetPosition($1.Position()) in some yacc rule?

can you check/fix this?

[QuestionPython]

good, but test one also have bug.
mean :

print(5*****2)# say column 10
print(5***2) # say column 12 (this have bug)

please check/fix this.

[mattn]

I can't understand your english. Please explain clearly. And please check that your english is right on Google Translate before report.

[QuestionPython]

Please try your two input to the interpreter.

this is fixed :

print(5*****2)# say column 10

---

but this not fix :

print(5***2) # say column 12 (this have bug)

[mattn]

because anko doesn't have such a operator. it's not a bug.

[QuestionPython]

anko have * and ** operator.
but not have *** operator

also with input :

print(5*****2)# say column 10

this is not bug. and is right. 👍

---

so with input :

print(5***2) # say column 12

but just say column 10. 👎

so have bug!

[QuestionPython]

another exampel : print(5++2)

input.txt:1:10 syntax error: unexpected NUMBER, expecting VARARG or ',' or ')'

so why say column 10?
column here is 9. but say 10.
and error is for + operator but this say ) operator.

[mattn]

It's not a bug. Anko support pointer dereference.

var a = 1
p = &a
println(1***p)

This is same as:

var a = 1
p = &a
println(1**(*p))

anko parse 1***2 as 1**(*2). off course, 2 may be a broken address.

[mattn]

another exampel : print(5++2)

anko can treat C like ++ operator. so it is parsed like print((5++)2) so 2 is broken letter.

So not a bug, this too.