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comparison python/ppci/frontends/ks/parser.py @ 101:af0d7913677a

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Fixes and splitting into 3 stage
author windel
date Mon, 24 Dec 2012 17:55:08 +0100
parents fe145e42259d
children 63937c8d1478
comparison
equal deleted inserted replaced
100:fe145e42259d 101:af0d7913677a
3 """ 3 """
4 4
5 from .symboltable import SymbolTable 5 from .symboltable import SymbolTable
6 from .nodes import * 6 from .nodes import *
7 from ...core.errors import CompilerException, Error 7 from ...core.errors import CompilerException, Error
8 #from .modules import loadModule
9 #from .display import printNode
10 #from .builtin import * 8 #from .builtin import *
11 #from . import assembler 9 #from . import assembler
10 from .lexer import tokenize
12 11
13 class KsParser: 12 class KsParser:
14 def __init__(self, tokens): 13 def __init__(self, source):
15 """ provide the parser with the tokens iterator from the lexer. """ 14 """ provide the parser with the tokens iterator from the lexer. """
16 self.tokens = tokens 15 self.tokens = tokenize(source) # Lexical stage
17 self.NextToken() 16 self.NextToken()
18 self.errorlist = [] 17 self.errorlist = []
19 18
20 def Error(self, msg): 19 def Error(self, msg):
21 raise CompilerException(msg, self.token.row, self.token.col) 20 raise CompilerException(msg, self.token.row, self.token.col)
51 Recursive descent parser functions: 50 Recursive descent parser functions:
52 A set of mutual recursive functions. 51 A set of mutual recursive functions.
53 Starting symbol is the Module. 52 Starting symbol is the Module.
54 """ 53 """
55 def parseModule(self): 54 def parseModule(self):
55 """ Top level parsing routine """
56 self.imports = [] 56 self.imports = []
57 loc = self.getLocation() 57 loc = self.getLocation()
58 self.Consume('module') 58 self.Consume('module')
59 modname = self.Consume('ID') 59 modname = self.Consume('ID')
60 self.Consume(';') 60 self.Consume(';')
96 self.Consume(';') 96 self.Consume(';')
97 97
98 def parseImport(self): 98 def parseImport(self):
99 loc = self.getLocation() 99 loc = self.getLocation()
100 modname = self.Consume('ID') 100 modname = self.Consume('ID')
101 mod = loadModule(modname) 101 #mod = loadModule(modname)
102 self.setLocation(mod, loc) 102 self.setLocation(mod, loc)
103 self.cst.addSymbol(mod) 103 self.cst.addSymbol(mod)
104 104
105 # Helper to parse an identifier defenitions 105 # Helper to parse an identifier defenitions
106 def parseIdentDef(self): 106 def parseIdentDef(self):