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comparison python/ppci/layout.py @ 386:2a970e7270e2

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Added repeat assembler macro
author Windel Bouwman
date Thu, 01 May 2014 17:40:59 +0200
parents d056b552d3f4
children
comparison
equal deleted inserted replaced
385:d056b552d3f4 386:2a970e7270e2
54 54
55 def __repr__(self): 55 def __repr__(self):
56 return 'Align({})'.format(self.alignment) 56 return 'Align({})'.format(self.alignment)
57 57
58 58
59 class SymbolDefinition(Input):
60 def __init__(self, symbol_name):
61 self.symbol_name = symbol_name
62
63 def __repr__(self):
64 return 'Symbol define: {}'.format(self.symbol_name)
65
66
59 class LayoutLexer(BaseLexer): 67 class LayoutLexer(BaseLexer):
60 def __init__(self): 68 def __init__(self):
61 tok_spec = [ 69 tok_spec = [
62 ('HEXNUMBER', r'0x[\da-fA-F]+', self.handle_number), 70 ('HEXNUMBER', r'0x[\da-fA-F]+', self.handle_number),
63 ('NUMBER', r'\d+', self.handle_number), 71 ('NUMBER', r'\d+', self.handle_number),
65 ('SKIP', r'[ \t\r\n]', None), 73 ('SKIP', r'[ \t\r\n]', None),
66 ('LEESTEKEN', r':=|[\.,=:\-+*\[\]/\(\)]|>=|<=|<>|>|<|}|{', lambda typ, val: (val, val)), 74 ('LEESTEKEN', r':=|[\.,=:\-+*\[\]/\(\)]|>=|<=|<>|>|<|}|{', lambda typ, val: (val, val)),
67 ('STRING', r"'.*?'", lambda typ, val: (typ, val[1:-1])), 75 ('STRING', r"'.*?'", lambda typ, val: (typ, val[1:-1])),
68 ] 76 ]
69 super().__init__(tok_spec) 77 super().__init__(tok_spec)
70 self.kws = ['MEMORY', 'ALIGN', 'LOCATION','SECTION','SIZE'] 78 self.kws = ['MEMORY', 'ALIGN', 'LOCATION','SECTION','SIZE', 'DEFINESYMBOL']
71 79
72 def handle_id(self, typ, val): 80 def handle_id(self, typ, val):
73 if val in self.kws: 81 if val in self.kws:
74 typ = val 82 typ = val
75 return typ, val 83 return typ, val
88 g.add_one_or_more('mem', 'mem_list') 96 g.add_one_or_more('mem', 'mem_list')
89 g.add_production('mem', ['MEMORY', 'ID', 'LOCATION', '=', 'NUMBER', 'SIZE', '=', 'NUMBER', '{', 'input_list', '}'], self.handle_mem) 97 g.add_production('mem', ['MEMORY', 'ID', 'LOCATION', '=', 'NUMBER', 'SIZE', '=', 'NUMBER', '{', 'input_list', '}'], self.handle_mem)
90 g.add_one_or_more('input', 'input_list') 98 g.add_one_or_more('input', 'input_list')
91 g.add_production('input', ['ALIGN', '(', 'NUMBER', ')'], self.handle_align) 99 g.add_production('input', ['ALIGN', '(', 'NUMBER', ')'], self.handle_align)
92 g.add_production('input', ['SECTION', '(', 'ID', ')'], self.handle_section) 100 g.add_production('input', ['SECTION', '(', 'ID', ')'], self.handle_section)
101 g.add_production('input', ['DEFINESYMBOL', '(', 'ID', ')'], self.handle_defsym)
93 102
94 g.start_symbol = 'layout' 103 g.start_symbol = 'layout'
95 self.p = g.generate_parser() 104 self.p = g.generate_parser()
96 105
97 def parse(self, lexer, layout): 106 def parse(self, lexer, layout):
110 return Align(alignment.val) 119 return Align(alignment.val)
111 120
112 def handle_section(self, section_tag, lbrace, section_name, rbrace): 121 def handle_section(self, section_tag, lbrace, section_name, rbrace):
113 return Section(section_name.val) 122 return Section(section_name.val)
114 123
124 def handle_defsym(self, section_tag, lbrace, name, rbrace):
125 return SymbolDefinition(name.val)
126
115 127
116 class LayoutLoader: 128 class LayoutLoader:
117 def __init__(self): 129 def __init__(self):
118 self.lexer = LayoutLexer() 130 self.lexer = LayoutLexer()
119 self.parser = LayoutParser(self.lexer.kws) 131 self.parser = LayoutParser(self.lexer.kws)