added some stuff

ast.py

@@ -39,6 +39,7 @@ def __init__(self, variable, varFrom, varTo, instructions):
         self.varTo = varTo
         self.instructions = instructions
 
+
 class WhileLoop(Node):
     def __init__(self, condition, instructions):
         self.condition = condition
@@ -88,4 +89,57 @@ def __init__(self, range):
 class Range(Node):
     def __init__(self, start, end):
         self.start = start
-        self.end = end
+        self.end = end
+
+
+class Variable(Expr):
+    def __init__(self, id):
+        self.id = id
+
+
+class SingleMatrixRef(Expr):
+    def __init__(self, id, idx):
+        self.id = id
+        self.idx = idx
+
+
+class DoubleMatrixRef(Expr):
+    def __init__(self, id, idx, idx2):
+        self.id = id
+        self.idx = idx
+        self.idx2 = idx2
+
+
+class UnOp(Expr):
+    def __init__(self, op, right):
+        self.type = "unop"
+        self.op = op
+        self.right = right
+
+
+class PrintInstruction(Node):
+    def __init__(self, toprint):
+        self.toprint = toprint
+
+
+class AssignInstruction(Node):
+    def __init__(self, operand, left, right):
+        self.operand = operand
+        self.left = left
+        self.right = right
+
+
+class Matrix(Node):
+    def __init__(self):
+        self.rows=[]
+
+    def append(self,row):
+        self.rows+=row
+
+
+class Row(Node):
+    def __init__(self):
+        self.nums = []
+
+    def append(self, num):
+        self.nums += num

parser.py

@@ -8,10 +8,10 @@
 tokens = scanner.tokens
 
 precedence = (
-    # to fill ...
-    # ("left", '+', '-'),
-    # ("left", '*', '/')
-    # to fill ...
+    ("left", '+', '-'),
+    ("left", '*', '/'),
+    ("left", "DOTADD", "DOTSUB"),
+    ("left", "DOTMUL", "DOTDIV"),
 )
 
 
@@ -42,9 +42,43 @@ def p_instructions_1(p):
 def p_instructions_2(p):
     """instructions : instruction """
 
-def p_instruction_assign(p):
-    'instruction : ID "=" expression'
-    names_dictionary[p[1]] = p[3]
+def p_expression_group(p):
+    'expression : "(" expression ")"'
+    p[0] = p[2]
+
+
+def p_assign_instruction(p):
+    '''assign_instruction : var assign_operand INTNUM
+                         | var assign_operand FLOATNUM
+                         | var assign_operand ID
+                         | var assign_operand var
+                         | var assign_operand expression
+    '''
+    p[0] = AssignInstruction(p[2], p[1], p[3])
+
+
+def p_var(p):
+    '''var : ID
+           | ID '[' INTNUM ']'
+           | ID '[' INTNUM ',' INTNUM ']'
+    '''
+    if len(p) == 2:
+        p[0] = Variable(p[1])
+    elif len(p) == 5:
+        p[0] = SingleMatrixRef(p[1], p[3])
+    elif len(p) == 7:
+        p[0] = DoubleMatrixRef(p[1], p[3], p[5])
+
+
+def p_assign_operand(p):
+    '''assign_operand :  "="
+                      | ADDASSIGN
+                      | SUBASSIGN
+                      | MULASSIGN
+                      | DIVASSIGN
+    '''
+    p[0] = p[1]
+    print("INSTRUCTION ASSIGN")
 
 def p_expression_binop(p):
     '''expression : expression "+" expression
@@ -65,11 +99,6 @@ def p_expression_binop(p):
     p[0] = BinOp(p[1], p[2], p[3])
 
 
-def p_expression_group(p):
-    'expression : "(" expression ")"'
-    p[0] = p[2]
-
-
 def p_expression_number(p):
     'expression : INTNUM'
     p[0] = Number(p[1])
@@ -82,6 +111,12 @@ def p_exp_name(p):
         print("Name not defined")
         p[0] = 0
 
+def p_expression_unop(p):
+    '''expression : "-" expression
+                  | "!" expression
+    '''
+    p[0] = UnOp(p[1, p[2]])
+
 
 def p_expression_block(p):
     '''block : "{" instructions "}"
@@ -122,17 +157,17 @@ def p_while_2(p):
 
 
 def p_ones(p):
-    'expression : ONES "(" INTNUM ")"'
+    'ones : ONES "(" INTNUM ")"'
     p[0] = Ones(p[3])
 
 
 def p_zeros(p):
-    'expression : ZEROS "(" INTNUM ")"'
+    'zeros : ZEROS "(" INTNUM ")"'
     p[0] = Zeros(p[3])
 
 
 def p_eye(p):
-    'expression : EYE "(" INTNUM ")"'
+    'eye : EYE "(" INTNUM ")"'
     p[0] = Eye(p[3])
 
 
@@ -165,4 +200,46 @@ def p_range(p):
     'range : "[" INTNUM "," INTNUM "]" '
     p[0]= Range(p[2], p[4])
 
+
+
+def p_matrix_init_instruction(p):
+    '''matrix_init_instruction : matrix_init_fun
+                               | '[' matrix_row ']'
+                               | '[' matrix_rows ']'
+    '''
+    if len(p)==2:
+        p[0] = p[1]
+    else: p[0] = p[2]
+
+
+def p_matrix_init_fun(p):
+    '''matrix_init_fun : zeros
+                       | ones
+                       | eye
+    '''
+
+
+def p_matrix_row(p):
+    """matrix_row : matrix_row ',' INTNUM
+                      | INTNUM """
+    if len(p)==4:
+        if p[1] is None:
+            p[0]=Row()
+        else: p[0]=p[1]
+        p[0].append(p[3])
+    else:
+        p[0].append(p[3])
+
+
+def p_matrix_rows(p):
+    """matrix_rows : matrix_row ';' matrix_rows
+                   | matrix_row"""
+    if len(p)==4:
+        if p[1] is None:
+            p[0]=Matrix()
+        else: p[0]=p[1]
+        p[0].append(p[3])
+    else:
+        p[0].append(p[3])
+
 parser = yacc.yacc()