Need help with custom syntax

Snuuh

Hello,

I am about to alter the C++ sytax to get it closer to the real C-syntax. So here is what I got so far, maybe you will find it useful.

Arrays:

int a[5,5,5], b[5][5][5]; // second is not allowed in C++Script

Fix:

 <array node="array">
    <loop>                                  // added
      <char text="["/>
      <loop text=",">
        <arraydim err="err2"/>
      </loop>
      <char text="]" err="err8"/>
    </loop>                                 // added
  </array>

  ...

  <designator node="dsgn">
    <optional>
      <char text="&" add="addr"/>
    </optional>
    <ident add="node"/>
    <optionalloop>
      <switch>
        <sequence>
          <char text="."/>
          <ident add="node"/>
        </sequence>
        <sequence>
          <char text="[" add="node"/>
          <exprlist err="err2"/>
          <char text="]" err="err8"/>
          <optionalloop>                    // added
            <char text="["/>                // added
            <exprlist err="err2"/>          // added
            <char text="]" err="err8"/>     // added
          </optionalloop>                   // added
        </sequence>
        <sequence>
          <char text="("/>
          <optional>
            <exprlist/>
          </optional>
          <char text=")" err="err7"/>
        </sequence>
      </switch>
    </optionalloop>
  </designator>

Function Declaration:

void test( int a, int b ) {}  // not allowed in C++Script

Fix:

 <formalparameters node="parameters">
    <char text="("/>
    <optionalloop text=",">                   // changed
      <formalparam/>
    </optionalloop>
    <char text=")" err="err7"/>
  </formalparameters>

  <formalparam node="var">
    <ident add="type"/>
    <optional>                                // removed 'loop'
      <char text="&" add="varparam"/>
    </optional>
    <ident add="ident" err="err1"/>
    <optional>
      <initvalue/>
    </optional>
  </formalparam>

FOR-Loop:

for ( a = 10, b = 0; a > 0; a--, b++ ) {}  // multipe declerations are not allowed in C++Script

Fix:
I did not succeded in fixing this. Is it possible to do so without changes in the code?
In a perfect world something like this should have worked:

 <forstmt node="cppforstmt">
    <keyword text="FOR"/>
    <char text="(" err="err12"/>
    <loop text=",">                   // added
      <forstmtitem/>
    </loop>                           // added
    <char text=";" err="err5"/>
    <expression err="err2"/>
    <char text=";" err="err5"/>
    <loop text=",">                   // added
      <forstmtitem/>
    </loop>                           // added
    <char text=")" err="err7"/>
    <statement/>
  </forstmt>

I hope it was helpful for you and maybe someone can help me with the FOR-Loop.

AlexTZ

This should work:

  <!--    ForStmt -> FOR '(' ForCompoundStmt ';' Expression ';' ForCompoundStmt ')' Statement  -->

  <forstmt node="cppforstmt">
    <keyword text="FOR"/>
    <char text="(" err="err12"/>
    <forcompoundstmt/>
    <char text=";" err="err5"/>
    <expression err="err2"/>
    <char text=";" err="err5"/>
    <forcompoundstmt/>
    <char text=")" err="err7"/>
    <statement/>
  </forstmt>

  <!--    ForCompoundStmt -> (ForStmtItem/,)...  -->

  <forcompoundstmt node="compoundstmt">
    <loop text=",">
      <forstmtitem/>
    </loop>
  </forcompoundstmt>