compile a file(into another file)

README.md

@@ -2,4 +2,4 @@
 
 - [ ] Error handling(so it wont just print sly: unexpected token or whatever it says)
 - [ ] Proper readme about files
-- [ ] Make cpq.py act as a cmd util - get input and output and such
+- [x] Make cpq.py act as a cmd util - get input and output and such

cpq.py

@@ -1,4 +1,5 @@
 import sly
+import sys
 # for ease of reading, the compiler is broken down to multiple files
 # parser.py for the parser
 # lexer.py for the lexer
@@ -8,35 +9,24 @@ from parser import Parser
 from helper import print_err
 
 
-
-
 print_err('Aviv Romem')
+
+if len(sys.argv) != 2 or not sys.argv[1].endswith('.ou'):
+    print('USAGE: python cpq.py <file-name>.ou')
+    exit(1)
+
+file = sys.argv[1]
+output = file[:-3] + '.qud'
+f = open(file, 'r')
+text = f.read()
+f.close()
 lexer = Lexer()
 parser = Parser()
-text = '''
-a: int;
-{
-    while(a < 10) {
-        a = a + 1;
-        if(a >= 6 || a == 5) 
-            break;
-        else
-            a = a + 0;
-    }
-    output(a);
-    switch(a * 5) {
-        case 1:
-            a = 5;
-            break;
-        case 5:
-            output(a);
-        default:
-            break;
-    }
-    output(a);
-    
-}
-'''
+
+file = sys.argv[1]
+
 parser.parse(lexer.tokenize(text))
-for l, t in enumerate(parser.lines):
-    print(l,':',t)
+if not parser.had_errors:
+    f = open(output, 'w')
+    f.writelines([l + '\n' for l in parser.lines])
+    f.close()

parser.py

@@ -13,7 +13,7 @@ class Parser(sly.Parser):
     tokens = Lexer.tokens
     symbol_table = {}
     had_errors = False # Simply to know if we need to write the program in the end
-    lines = [ ]
+    lines = [ '' ] # Start with en empty line, so len(lines) will represent the next line
     last_used_temp = 0 # cpl doesnt allow _ in ids, so use t_NUM as variables
 
     def next_temp(self):
@@ -24,6 +24,7 @@ class Parser(sly.Parser):
     def program(self, p):
         self.lines.append('HALT')
         self.lines.append('Aviv Romem')
+        self.lines.pop(0) # remove the empty line
         return None
     
     @_('declarations declaration')

test.ou

@@ -0,0 +1,22 @@
+a: int;
+{
+    while(a < 10) {
+        a = a + 1;
+        if(a >= 6 || a == 5) 
+            break;
+        else
+            a = a + 0;
+    }
+    output(a);
+    switch(a * 5) {
+        case 1:
+            a = 5;
+            break;
+        case 5:
+            output(a);
+        default:
+            break;
+    }
+    output(a);
+    
+}

test.qud

@@ -0,0 +1,29 @@
+ILSS t_1 a 10
+JMPZ 15 t_1
+IADD t_2 a 1
+IASN a t_2
+ILSS t_3 a 6
+IEQL t_3 t_3 0
+IEQL t_4 a 5
+IADD t_5 t_3 t_4
+JMPZ 12 t_5
+JUMP 15
+JUMP 14
+IADD t_6 a 0
+IASN a t_6
+JUMP 1
+IPRT a
+IMLT t_7 a 5
+IEQL t_8 t_7 1
+JMPZ 22 t_8
+IASN a 5
+JUMP 27
+JUMP 24
+IEQL t_8 t_7 5
+JMPZ 26 t_8
+IPRT a
+JUMP 26
+JUMP 27
+IPRT a
+HALT
+Aviv Romem