baccigalupi

switch ( yy_act )
{ /* beginning of action switch */
case 0: /* must back up */
/* undo the effects of YY_DO_BEFORE_ACTION */
*yy_cp = (yy_hold_char);
yy_cp = (yy_last_accepting_cpos);
yy_current_state = (yy_last_accepting_state);
goto yy_find_action;

case 1:

baccigalupi

%option noyywrap
%{
/* Lexer example using a overdone c++ class for managing both tokens and logic */
#include "1_simple_calculator.cpp"

using namespace simple_calculator;
Queue token_queue;
Token token;

%}

baccigalupi

flex -o 0_repeater.c 0_repeater.lex # makes an output file tokens.c from tokens.lex

# running the generated C source to make a binary
gcc 0_repeater.c -lfl -o 0_repeater

# or alternately with clang
clang 0_repeater.c -lfl -o 0_repeater

./repeater # runs the binary, will take input from the command line and run it against the code

baccigalupi

/* 
   You can add include and setup C code 
   that will go directly into the resulting source code.

   The format for getting it in their via the Flex DSL is like so:
*/
%{
/* this goes straight into the source code! */
#include 'my_file.c'
double total = 0.0;

baccigalupi

<div class='header line'>
  <div class='inner'>
    <img class='logo unit size1of3' src='/my_logo.png'>
    <ul class='unit size2of3'>
      <li>
        <a href='/login'>Login</a>
      </li>
      <li>
        <a href='/signup'>Sign up</a>
      </li>

baccigalupi

<div class='header'>
  <img class='logo' src='/my_logo.png'>
  <ul>
    <li>
      <a href='/login'>Login</a>
    </li>
    <li>
      <a href='/signup'>Sign up</a>
    </li>
  </ul>

baccigalupi

# Available operators for overloading criteria interactions
#  +  &  |  <  >  <=  >=  =~  ==  <=>    

# criteria creator for matching a hash/array value at a particular location
# good for hash/array objects or their derivatives
Klass.query do |obj|
  obj[3] == "something" |
  obj[:key] == "value" 
  # obj.has_value(my_value, :at => :key) 
  # has_value is alt syntax, could include options for :key/:index to specify hash or array

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# Possible AQUA query syntax ...

# INSTANCE VARIABLES
# checks to see if a value exists, works for hashes and for arrays
@instance.has_value( value ) # value is a value or array of values

#checks to see if a value exists at a certain location
@instance.has_value( value, :at => 0 ) # if integer, assumed to be an integer
@instance.has_value( value, :at => :first ) # could be either an array or a hash key
@instance.has_value( value, :at => :some_key ) # a hash key