Finished file

final_lang/lex_yacc.py

@@ -42,3 +42,185 @@ tokens = [
     'lessEquals',
     'moreEquals',
 ]
+
+t_program = r'program'
+t_end = r'end'
+t_doubleColon = r'::'
+t_coma = r','
+t_integer = r'integer'
+t_real = r'real'
+t_openBra = r'\['
+t_closedBra = r'\]'
+t_subroutine = r'subroutine'
+t_parens = r'\(\)'
+t_openParen = r'\('
+t_closedParen = r'\)'
+t_read = r'read'
+t_print = r'print'
+t_if = r'if'
+t_then = r'then'
+t_else = r'else'
+t_elif = r'elif'
+t_do = r'do'
+t_swap = r'swap'
+t_exit = r'exit'
+t_plus = r'\+'
+t_minus = r'-'
+t_mul = r'\*'
+t_string = r'".*"'
+t_or = r'\.or\.'
+t_and = r'\.and\.'
+t_not = r'\.not\.'
+t_doubleEquals = r'=='
+t_equals = r'='
+t_notEquals = r'/='
+t_div = r'/'
+t_lessEquals = r'<='
+t_less = r'<'
+t_moreEquals = r'>='
+t_more = r'>'
+t_ignore = r'\s|\n|!.*\n'
+
+def t_int(t):
+    r'\d+'
+    t.value = int(t.value)
+    return t
+
+
+def t_rea(t):
+    r'\d+\.\d+'
+    t.value = float(t.value)
+    return t
+
+
+def t_id(t):
+    r'[a-zA-Z_]\w*'
+    t.type = 'id'
+    return t
+
+def t_error(t):
+    print("Illegal character!")
+    t.lexer.skip(1)
+
+lexer = lex.lex()
+
+def p_programa(p):
+    '''
+    programa : program id V F B end program
+    ''' 
+
+def p_V(p):
+    '''
+    V : V Tipo Dim doubleColon Rid
+      |
+    '''
+
+def p_Rid(p):
+    '''
+    Rid : id
+       | Rid coma id
+    '''
+
+def p_Tipo(p):
+    '''
+    Tipo : integer
+         | real
+    '''
+
+def p_Dim(p):
+    '''
+    Dim : openBra int closedBra
+        | openBra int closedBra openBra int closedBra
+        |
+    '''
+
+def p_F(p):
+    '''
+    F : F subroutine id B end subroutine
+      |
+    '''
+
+def p_B(p):
+    '''
+    B : B S
+      |
+    '''
+
+def p_S(p):
+    '''
+    S : Dimensional equals EA
+      | id parens
+      | read RDimensional
+      | print RDimOrString
+      | if Relif ElseOrEmpty end if
+      | do id equals EA coma EA IntOrEmpty B end do
+      | do B end do
+      | swap Dimensional coma Dimensional
+      | exit
+    '''
+
+def p_Dimensional(p):
+    '''
+    Dimensional : id DimensionsOrEmpty
+    '''
+
+def p_DimensionsOrEmpty(p):
+    '''
+    DimensionsOrEmpty : openParen EA ComaEAOrEmpty closedParen
+                      |
+    '''
+
+def p_ComaEAOrEmpty(p):
+    '''
+    ComaEAOrEmpty : coma EA
+                  |
+    '''
+
+def p_RDimensional(p):
+    '''
+    RDimensional : Dimensional
+                 | RDimensional , Dimensional
+    '''
+
+def p_RDimOrString(p):
+    '''
+    RDimOrString : DimOrString
+                 | RDimOrString coma DimOrString
+    '''
+
+def p_DimOrString(p):
+    '''
+    DimOrString : Dimensional
+                | string
+    '''
+
+def p_Relif(p):
+    '''
+    Relif : openParen EL closedParen then B
+          | Relif elif openParen EL closedParen then B
+    '''
+
+def p_ElseOrEmpty(p):
+    '''
+    ElseOrEmpty : else B
+                |
+    '''
+
+def p_IntOrEmpty(p):
+    '''
+    IntOrEmpty : coma int
+               |
+    '''
+
+def p_EA(p):
+    '''
+    EA : MultDiv
+       | EA SumOrSub MultDiv
+    '''
+
+def p_SumOrSub(p):
+    '''
+    SumOrSub : plus
+             | minus
+    '''
+