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comparison python/c3/codegenerator.py @ 157:8f3924b6076e

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Added some code generator things
author Windel Bouwman
date Sun, 03 Mar 2013 18:14:35 +0100
parents 1b4a85bdd99c
children 9683a4cd848f
comparison
equal deleted inserted replaced
156:1b4a85bdd99c 157:8f3924b6076e
16 v = ir.Value() 16 v = ir.Value()
17 v.name = var.name 17 v.name = var.name
18 m.Globals.append(v) 18 m.Globals.append(v)
19 19
20 def genFunction(m, fnc): 20 def genFunction(m, fnc):
21 f = ir.Function() 21 ft = genType(fnc.typ)
22 f = ir.Function(fnc.name, ft)
22 m.Globals.append(f) 23 m.Globals.append(f)
24 bb = ir.BasicBlock()
25 f.BasicBlocks.append(bb)
26 genCode(bb, fnc.body)
27
28 def genCode(bb, code):
29 if type(code) is astnodes.CompoundStatement:
30 for s in code.statements:
31 genCode(bb, s)
32 elif type(code) is astnodes.Assignment:
33 genCode(bb, code.rval)
34 print('assign')
35 elif type(code) is astnodes.IfStatement:
36 genCode(bb, code.condition)
37 genCode(bb, code.truestatement)
38 print('If!')
39 elif type(code) is astnodes.Binop:
40 genCode(bb, code.a)
41 genCode(bb, code.b)
42 a = 1
43 b = 2
44 if code.op == '+':
45 bb.Instructions.append(ir.AddInstruction(a, b))
46 else:
47 bb.Instructions.append(ir.BinaryOperator(code.op, a, b))
48 elif type(code) is astnodes.Constant:
49 print('CST')
50 bb.Instructions.append(ir.ImmLoadInstruction(code.value))
51 else:
52 print('Unknown:', code)
53
54 def genType(t):
55 return ir.Type()
23 56
24 class CodeGenerator: 57 class CodeGenerator:
25 """ Generates intermediate code """ 58 """ Generates intermediate code """
26 def gencode(self, ast): 59 def gencode(self, ast):
27 print('Code generator')
28 assert type(ast) is astnodes.Package 60 assert type(ast) is astnodes.Package
29 return genModule(ast) 61 return genModule(ast)
30 62