import c3.parser, c3.semantics
from ppci.errors import printError, Diagnostics
import time

testsrc = """
package test;

var u32 a ;
var u32 c, d;

function void test1() 
{
    var u32 b;
    var int a = 10;
    b = 20;
    var int buf;
    var int i;
    i = 2;
    if (i > 1)
    {
       buf = b + 22 * i - 13 + (55 * 2 *9-2) / 44
    }
}

function int t2(u32 a, u32 b)
{
   return a + b;
   a = 2
}

function int t2(u32 a, u32 b)
{
   return a + b;
   a = 2 + 33 - 1;
   a = a - 2
}

"""

def printAst(ast, indent=''):
   print(indent + str(ast))
   if isinstance(ast, c3.astnodes.Package):
      for s in ast.scope:
         printAst(s, indent + '  ')
   if isinstance(ast, c3.astnodes.Procedure):
      for s in ast.scope:
         printAst(s, indent + '  ')
   for c in ast.getChildren():
      printAst(c, indent + '  ')

def do():
   print('[0] source:')
   print(testsrc)
   print('[1] parsing')
   diag = Diagnostics()
   sema = c3.semantics.Semantics(diag)
   p = c3.parser.Parser(sema, diag)
   t1 = time.time()
   p.parseSource(testsrc)
   t2 = time.time() 
   print('parsetime: {0} [s]'.format(t2 - t1))

   for d in diag.diags:
      print('ERROR:', d)
      printError(testsrc, d)
   print('[2] ast:')
   printAst(sema.mod)

do()