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comparison python/c3/codegenerator.py @ 176:5fd02aa38b42

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Added while loop code generation
author Windel Bouwman
date Sat, 20 Apr 2013 12:00:51 +0200
parents a51b3c956386
children 460db5669efa
comparison
equal deleted inserted replaced
175:a51b3c956386 176:5fd02aa38b42
67 self.builder.setBB(bbfalse) 67 self.builder.setBB(bbfalse)
68 self.genCode(code.falsestatement) 68 self.genCode(code.falsestatement)
69 self.builder.addIns(ir.Branch(te)) 69 self.builder.addIns(ir.Branch(te))
70 self.builder.setBB(te) 70 self.builder.setBB(te)
71 elif type(code) is astnodes.FunctionCall: 71 elif type(code) is astnodes.FunctionCall:
72 print('TODO')
72 pass 73 pass
73 elif type(code) is astnodes.EmptyStatement: 74 elif type(code) is astnodes.EmptyStatement:
74 pass 75 pass
75 elif type(code) is astnodes.ReturnStatement: 76 elif type(code) is astnodes.ReturnStatement:
76 if code.expr: 77 if code.expr:
77 re = self.genExprCode(code.expr) 78 re = self.genExprCode(code.expr)
78 self.builder.addIns(ir.Return(re)) 79 self.builder.addIns(ir.Return(re))
79 else: 80 else:
80 self.builder.addIns(ir.Return()) 81 self.builder.addIns(ir.Return())
82 elif type(code) is astnodes.WhileStatement:
83 bbdo = self.builder.newBB()
84 bbtest = self.builder.newBB()
85 te = self.builder.newBB()
86 self.builder.addIns(ir.Branch(bbtest))
87 self.builder.setBB(bbtest)
88 self.genCondCode(code.condition, bbdo, te)
89 self.builder.setBB(bbdo)
90 self.genCode(code.dostatement)
91 self.builder.addIns(ir.Branch(bbtest))
92 self.builder.setBB(te)
81 else: 93 else:
82 print('Unknown stmt:', code) 94 print('Unknown stmt:', code)
83 def genCondCode(self, expr, bbtrue, bbfalse): 95 def genCondCode(self, expr, bbtrue, bbfalse):
84 # Implement sequential logical operators 96 # Implement sequential logical operators
85 assert expr.typ == boolType 97 assert expr.typ == boolType