hello world grammar mistake?

[flip111]

I have my test file like this

//option namespace:someNamespace
//option class:someClass
//option fileName:out.php
//option extends:someExtend
//option parserValue:someParser


//Lexical Grammar
%lex

HELLO            hello
WORLD            world


//Create tokens from lexical analysis
%%
HELLO {
  return 'hi';
}

WORLD {
  return 'planet';
}

/lex

%%

test
  : HELLO WORLD

When i run jison it returns:

Executing: jison test.jison
Failed: 8

Is this a mistake of the grammar or another thing that is going wrong entirely??

[robertleeplummerjr]

Try:

test
: HELLO WORLD ;

On Wed, Oct 22, 2014 at 2:41 PM, flip111 [email protected] wrote:

I have my test file like this

//option namespace:someNamespace
//option class:someClass
//option fileName:out.php
//option extends:someExtend
//option parserValue:someParser

//Lexical Grammar
%lex

HELLO hello
WORLD world

//Create tokens from lexical analysis
%%
HELLO {
return 'hi';
}

WORLD {
return 'planet';
}

/lex

%%

test
: HELLO WORLD

When i run jison it returns:

Executing: jison test.jison
Failed: 8

Is this a mistake of the grammar or another thing that is going wrong
entirely??

—
Reply to this email directly or view it on GitHub
https://github.com/robertleeplummerjr/jison/issues/4.

Robert Plummer

[flip111]

this helped a little bit i guess ..

Executing: jison test.jison



Opening newly created jison js file: test.js
Something went bad

what does that mean?

[robertleeplummerjr]

just execute jison test.jison and ensure it is working before trying it
with ports.

On Wed, Oct 22, 2014 at 2:52 PM, flip111 [email protected] wrote:

this helped a little bit i guess ..

Executing: jison test.jison

Opening newly created jison js file: test.js
Something went bad

what does that mean?

—
Reply to this email directly or view it on GitHub
https://github.com/robertleeplummerjr/jison/issues/4#issuecomment-60135542
.

Robert Plummer

[flip111]

That test file didn't work, i corrected it to this

test.jison

//option namespace:someNamespace
//option class:someClass
//option fileName:out.php
//option extends:someExtend
//option parserValue:someParser

//Lexical Grammar
%lex

//Create tokens from lexical analysis
%%
hello { return 'HELLO'; }
world { return 'WORLD'; }
\s+   {/* skip whitespace */}

/lex

%%

test
  : HELLO WORLD ;

input.txt

hello world

Executed commands:

jison test.jison
node test.js input.txt

This gave no error so i assume everything went succesful. However i don't know yet how i can access the generated AST.

Using those files like that and trying it with the php port:

D:\dev\console\jisonTest>node %APPDATA%\npm\node_modules\jison\ports\php\php.js test.jison
Executing: jison test.jison



Opening newly created jison js file: test.js
Something went bad

[robertleeplummerjr]

What happens when you execute jison test.jison?

On Fri, Oct 24, 2014 at 2:55 PM, flip111 [email protected] wrote:

That test file didn't work, i corrected it to this

test.jison

//option namespace:someNamespace
//option class:someClass
//option fileName:out.php
//option extends:someExtend
//option parserValue:someParser

//Lexical Grammar
%lex

//Create tokens from lexical analysis
%%
hello { return 'HELLO'; }
world { return 'WORLD'; }
\s+ {/* skip whitespace */}

/lex

%%

test
: HELLO WORLD ;

input.txt

hello world

Executed commands:

jison test.jison
node test.js input.txt

This gave no error so i assume everything went succesful. However i don't
know yet how i can access the generated AST.

Using those files like that and trying it with the php port:

D:\dev\console\jisonTest>node %APPDATA%\npm\node_modules\jison\ports\php\php.js test.jison
Executing: jison test.jison

Opening newly created jison js file: test.js
Something went bad

—
Reply to this email directly or view it on GitHub
https://github.com/robertleeplummerjr/jison/issues/4#issuecomment-60433080
.

Robert Plummer

[flip111]

nothing visible in console (one empty line to be precise)

D:\dev\console\jisonTest>jison test.jison

D:\dev\console\jisonTest>

[flip111]

I looked at the calculator example and i noticed it was using some extra commands typeof console !== 'undefined' ? console.log($1) : print($1); return $1;. So i added that into my file and now i get output hello. Ok not hello world .. so there is still something wrong but at least it's parsing it without errors and i get some result.

//option namespace:someNamespace
//option class:someClass
//option fileName:out.php
//option extends:someExtend
//option parserValue:someParser

//Lexical Grammar
%lex

//Create tokens from lexical analysis
%%
hello { return 'HELLO'; }
world { return 'WORLD'; }
\s+   {/* skip whitespace */}

/lex

%%

test
  : HELLO WORLD {
      typeof console !== 'undefined' ? console.log($1) : print($1);
      return $1;
    };

As for the PHP version it still doesn't work.

[flip111]

Hi i found the bug. This line assumes that the input file lines are terminated by \n but in my case they are terminated by \r\n. Then later the filename out.php is replaced by out.php\r and windows can not write a filename like this so the error occurs.

[robertleeplummerjr]

Nice find, we should then handle both windows and linux lines.

On Sat, Nov 1, 2014 at 1:25 PM, flip111 [email protected] wrote:

Hi i found the bug. This line
https://github.com/robertleeplummerjr/jison/blob/master/ports/php/php.js#L91
assumes that the input file lines are terminated by \n but in my case
they are terminated by \r\n. Then later
https://github.com/robertleeplummerjr/jison/blob/master/ports/php/php.js#L92-L98
the filename out.php is replaced by out.php\r and windows can not write a
filename like this so the error occurs.

—
Reply to this email directly or view it on GitHub
https://github.com/robertleeplummerjr/jison/issues/4#issuecomment-61375715
.

Robert Plummer