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1 import hashlib
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2 # Import compiler components:
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3 from . import lexer
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5
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4 from .parser import Parser
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5 from .codegenerator import CodeGenerator
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6 from .nodes import ExportedSymbol
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7
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7 from .errors import CompilerException
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1
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8
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9 class Compiler:
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10 versie = '0.9.3'
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11
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12 def __repr__(self):
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13 return 'LCFOS compiler {0}'.format(self.versie)
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14
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15 def generateSignature(self, src):
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16 return hashlib.md5(bytes(src,encoding='ascii')).hexdigest()
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17
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18 def compilesource(self, src):
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19 """ Front end that handles the stages: """
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6
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20 self.errorlist = []
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5
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21 # Pass 1: parsing and type checking
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22 tokens = lexer.tokenize(src) # Lexical stage
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23 p = Parser(tokens)
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24 try:
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25 ast = p.parseModule() # Parse a module
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26 except CompilerException as e:
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27 p.errorlist.append( (e.row, e.col, e.msg) )
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5
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28 if len(p.errorlist) > 0:
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29 self.errorlist = p.errorlist
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30 return
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31 # Pass 2: code generation
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1
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32 CodeGenerator().generatecode(ast)
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33 # Attach a signature:
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34 ast.signature = self.generateSignature(src)
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35 # Generate exported symbols:
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36 ast.exports = []
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37 for proc in ast.procs:
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38 if proc.public:
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39 sym = ExportedSymbol(proc.name, proc.typ)
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40 sym.imageoffset = proc.entrypoint
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41 ast.exports.append(sym)
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42
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43 return ast
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44
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