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-rwxr-xr-xparser.py209
1 files changed, 0 insertions, 209 deletions
diff --git a/parser.py b/parser.py
deleted file mode 100755
index ce01011..0000000
--- a/parser.py
+++ /dev/null
@@ -1,209 +0,0 @@
-#!/usr/bin/python3 -tt
-
-# Copyright 2012 Jussi Pakkanen
-
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-
-# http://www.apache.org/licenses/LICENSE-2.0
-
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-import ply.lex as lex
-import ply.yacc as yacc
-import nodes
-
-reserved = {'true' : 'TRUE',
- 'false' : 'FALSE',
- 'if' : 'IF',
- 'endif' : 'ENDIF',
- 'else' : 'ELSE',
- }
-
-tokens = ['LPAREN',
- 'RPAREN',
- 'LBRACKET',
- 'RBRACKET',
- 'LBRACE',
- 'RBRACE',
- 'ATOM',
- 'COMMENT',
- 'ASSIGN',
- 'EQUALS',
- 'NEQUALS',
- 'COMMA',
- 'DOT',
- 'STRING',
- 'EOL_CONTINUE',
- 'EOL',
- ] + list(reserved.values())
-
-t_ASSIGN = '='
-t_EQUALS = '=='
-t_NEQUALS = '\!='
-t_LPAREN = '\('
-t_RPAREN = '\)'
-t_LBRACKET = '\['
-t_RBRACKET = '\]'
-t_LBRACE = '\{'
-t_RBRACE = '\}'
-t_COMMENT = '\#[^\n]*'
-t_COMMA = ','
-t_DOT = '\.'
-
-t_ignore = ' \t'
-
-def t_ATOM(t):
- '[a-zA-Z][_0-9a-zA-Z]*'
- t.type = reserved.get(t.value, 'ATOM')
- return t
-
-def t_STRING(t):
- "'[^']*'"
- t.value = t.value[1:-1]
- return t
-
-def t_EOL(t):
- r'\n'
- t.lexer.lineno += 1
- return t
-
-def t_EOL_CONTINUE(t):
- r'\\[ \t]*\n'
- t.lexer.lineno += 1
-
-def t_error(t):
- print("Illegal character '%s'" % t.value[0])
- t.lexer.skip(1)
-
-# Yacc part
-
-def p_codeblock(t):
- 'codeblock : statement EOL codeblock'
- cb = t[3]
- cb.prepend(t[1])
- t[0] = cb
-
-def p_codeblock_emptyline(t):
- 'codeblock : EOL codeblock'
- t[0] = t[2]
-
-def p_codeblock_last(t):
- 'codeblock : statement EOL'
- cb = nodes.CodeBlock(t.lineno(1))
- cb.prepend(t[1])
- t[0] = cb
-
-def p_expression_atom(t):
- 'expression : ATOM'
- t[0] = nodes.AtomExpression(t[1], t.lineno(1))
-
-def p_expression_bool(t):
- '''expression : TRUE
- | FALSE'''
- if t[1] == 'true':
- t[0] = nodes.BoolExpression(True, t.lineno(1))
- else:
- t[0] = nodes.BoolExpression(False, t.lineno(1))
-
-def p_expression_string(t):
- 'expression : STRING'
- t[0] = nodes.StringExpression(t[1], t.lineno(1))
-
-def p_statement_assign(t):
- 'statement : expression ASSIGN statement'
- t[0] = nodes.Assignment(t[1], t[3], t.lineno(1))
-
-def p_statement_comparison(t):
- '''statement : statement EQUALS statement
- | statement NEQUALS statement'''
- t[0] = nodes.Comparison(t[1], t[2], t[3], t.lineno(1))
-
-def p_statement_array(t):
- '''statement : LBRACKET args RBRACKET'''
- t[0] = nodes.ArrayStatement(t[2], t.lineno(1))
-
-def p_statement_func_call(t):
- 'statement : expression LPAREN args RPAREN'
- t[0] = nodes.FunctionCall(t[1], t[3], t.lineno(1))
-
-def p_statement_method_call(t):
- 'statement : expression DOT expression LPAREN args RPAREN'
- t[0] = nodes.MethodCall(t[1], t[3], t[5], t.lineno(1))
-
-def p_statement_if(t):
- 'statement : IF LPAREN statement RPAREN EOL codeblock elseblock ENDIF'
- t[0] = nodes.IfStatement(t[3], t[6], t[7], t.lineno(1))
-
-def p_empty_else(t):
- 'elseblock : '
- return None
-
-def p_else(t):
- 'elseblock : ELSE EOL codeblock'
- t[0] = t[3]
-
-def p_statement_expression(t):
- 'statement : expression'
- t[0] = nodes.statement_from_expression(t[1])
-
-def p_args_multiple(t):
- 'args : statement COMMA args'
- args = t[3]
- args.prepend(t[1])
- t[0] = args
-
-def p_args_single(t):
- 'args : statement'
- args = nodes.Arguments(t.lineno(1))
- args.prepend(t[1])
- t[0] = args
-
-def p_args_none(t):
- 'args :'
- t[0] = nodes.Arguments(t.lineno(0))
-
-def p_error(t):
- if t is None:
- txt = 'NONE'
- else:
- txt = t.value
- print('Parser errored out at: ' + txt)
-
-def test_lexer():
- s = """hello = (something) # this = (that)
- two = ['file1', 'file2']
- function(h) { stuff }
- obj.method(lll, \\
- 'string')
- """
- lexer = lex.lex()
- lexer.input(s)
- while True:
- tok = lexer.token()
- if not tok:
- break
- print(tok)
-
-def test_parser():
- code = """func_call('something', 'or else')
- objectname.methodname(abc)
-
- emptycall()"""
- print(build_ast(code))
-
-def build_ast(code):
- code = code.rstrip() + '\n'
- lex.lex()
- parser = yacc.yacc()
- result = parser.parse(code)
- return result
-
-if __name__ == '__main__':
- #test_lexer()
- test_parser()