www.digitalmars.com         C & C++   DMDScript  

digitalmars.D.learn - Vibe.d Diet Templatesand Forms

reply seany <seany uni-bonn.de> writes:
Hello

Please consider this diet template:

         doctype html
         html(lang="es", dir="ltr")
             head
                 meta(name="viewport", 
content="width=device-width, user-scalable=no, initial-scale=1.0")
                 meta(charset="utf-8")
                 link(rel="stylesheet", type="text/css", 
href="main.css")
                 <link 
href="https://fonts.googleapis.com/css2?family=Montserrat:wght 400;7
0;800&display=swap" rel="stylesheet">

             body

                 div.main
                     div.container.a-container#a-container
                         form(id="loginfrm", class="frm", 
method="post", action="/login_attempt")
                             h2.form_title.title Create Account
                             span.form__span or use email for 
registration
                             input.form__input(type="text", 
placeholder="Name" )
                             input.form__input(type="text", 
placeholder="Email")
                             input.form__input(type="password", 
placeholder="Password")
                             button().form__button.button.submit 
SIGN UP

Please notice the line `form(id= ...`. This line is causing the 
following error:




         login.dt(29,45): Error: found `method` when expecting `;` 
following `return` statement
         login.dt(29,51): Error: found `=` instead of statement
         login.dt(28,12): Error: missing closing `)` after `if 
("form"`
         login.dt(28,21): Error: found `)` when expecting `;` 
following statement
         login.dt(28,36): Error: found `method` when expecting `)`
         login.dt(28,42): Error: found `=` when expecting `)`
         login.dt(28,43): Error: found `""` when expecting `)`
         login.dt(28,45): Error: found `)` instead of statement
         
/root/.dub/packages/diet-ng-1.8.1/diet-ng/source/diet/html.d(246,8): Error:
template     instance `diet.html.compileHTMLDietFileString!("login.dt",
contents,     DefaultDietFilters).exec!(StreamOutputRange!(InterfaceP
oxy!(OutputStream), 1024LU))` error instantiating
         
/root/.dub/packages/vibe-d-0.9.5/vibe-d/http/vibe/http/server.d(351,66):       
instantiated from here:
`compileHTMLDietFileString!(StreamOutputRange!(InterfaceProxy!(OutputStream),
1024LU))`
         source/app.d(41,5):        instantiated from here: 
`render!"login.dt"`


What is the problem? How can I resolve it? Thank you.
Jan 19 2023
parent reply Steven Schveighoffer <schveiguy gmail.com> writes:
On 1/19/23 6:24 PM, seany wrote:

 Hello
 
 Please consider this diet template:
 
          doctype html
          html(lang="es", dir="ltr")
              head
                  meta(name="viewport",
content="width=device-width, 
 user-scalable=no, initial-scale=1.0")
                  meta(charset="utf-8")
                  link(rel="stylesheet", type="text/css",
href="main.css")
                  <link 
 href="https://fonts.googleapis.com/css2?family=Montserrat:wght 400;7
0;800&display=swap" rel="stylesheet">


Did you mean to include straight HTML here? I don't think that is supported.


 Please notice the line `form(id= ...`. This line is causing the 
 following error:
 
 
 
 
          login.dt(29,45): Error: found `method` when expecting `;` 
 following `return` statement
          login.dt(29,51): Error: found `=` instead of statement
          login.dt(28,12): Error: missing closing `)` after `if ("form"`
          login.dt(28,21): Error: found `)` when expecting `;` following 
 statement
          login.dt(28,36): Error: found `method` when expecting `)`
          login.dt(28,42): Error: found `=` when expecting `)`
          login.dt(28,43): Error: found `""` when expecting `)`
          login.dt(28,45): Error: found `)` instead of statement
 /root/.dub/packages/diet-ng-1.8.1/diet-ng/source/diet/html.d(246,8): 
 Error: template     instance 
 `diet.html.compileHTMLDietFileString!("login.dt", contents,     
 DefaultDietFilters).exec!(StreamOutputRange!(InterfaceProxy!(OutputStream),
1024LU))` error instantiating
 /root/.dub/packages/vibe-d-0.9.5/vibe-d/http/vibe/http/server.d(35
,66):        instantiated from here:
`compileHTMLDietFileString!(StreamOutputRange!(InterfaceProxy!(OutputStream),
1024LU))`
          source/app.d(41,5):        instantiated from here: 
 `render!"login.dt"`
 
 
 What is the problem? How can I resolve it? Thank you.


The easiest way to see what the diet compiler is producing is to 
uncomment the line that outputs the compiled file to the console during 
compilation. That is located here: 
https://github.com/rejectedsoftware/diet-ng/blob/856bf6d75127955565b3b5edd9b1f4418b8ec7c3/source/diet/html.d#L234

With that being said, how diet works is to convert the diet template 
directly into D code. It relies on the translation to produce valid D 
code (no specialized parsing or semantic-aware processing is done, it's 
just a direct translation from diet AST to D). What is happening here is 
the diet compiler is not producing valid D code. This can happen when 
there are bugs, but usually only when there are D "escapes", which don't 
correctly set up the syntax (like if you include a curly brace, which 
isn't expected)

However, in your code, I don't see any "escapes", so I'm not sure what 
could cause it there.

I will note that most of the time, when I get diet errors like that the 
error is not on that specific line, but on something that happened 
before to confuse the D compiler. That html `link` node might be the 
issue, but again, I'm not sure what is intended there.

-Steve
Jan 19 2023
parent seany <seany uni-bonn.de> writes:
On Friday, 20 January 2023 at 01:32:04 UTC, Steven Schveighoffer 
wrote:

 On 1/19/23 6:24 PM, seany wrote:

 [...]


 Did you mean to include straight HTML here? I don't think that 
 is supported.

 [...]


You are indeed right. The Link was a problem, and removing the 
link actually have sorted the issue. Thank you.
Jan 19 2023