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12/11/2024 09:39:44 AM
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0README.html
10.75 KB
08/25/2024 02:43:42 PM
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AcManForm.dfm
38.22 KB
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LAparser.py
20.62 KB
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Setup.ini
1.41 KB
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SimpleCalc.py
3.58 KB
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SingleForm.dfm
42.7 KB
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TAP.py
7.42 KB
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__init__.py
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adventureEngine.py
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antlr_grammar.py
10.88 KB
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antlr_grammar_tests.py
2.89 KB
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apicheck.py
2.2 KB
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bf.py
4.15 KB
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bigquery_view_parser.py
62.51 KB
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booleansearchparser.py
15.26 KB
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btpyparse.py
4.16 KB
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builtin_parse_action_demo.py
817 bytes
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cLibHeader.py
853 bytes
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chemical_formulas.py
3.17 KB
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commasep.py
707 bytes
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configParse.py
2 KB
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cpp_enum_parser.py
1.35 KB
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cuneiform_python.py
2.57 KB
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datetime_parse_actions.py
1.9 KB
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decaf_parser.py
6.87 KB
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delta_time.py
21.49 KB
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dfmparse.py
7.05 KB
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dhcpd_leases_parser.py
2.98 KB
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dictExample.py
1.73 KB
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dictExample2.py
2.1 KB
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directx_x_file_parser.py
5.54 KB
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ebnf.py
4.15 KB
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ebnftest.py
2.35 KB
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email_address_parser.py
1.18 KB
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eval_arith.py
6.15 KB
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excel_expr.py
2.2 KB
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fourFn.py
10.27 KB
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gen_ctypes.py
5.28 KB
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getNTPserversNew.py
1.11 KB
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greeting.py
518 bytes
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greetingInGreek.py
425 bytes
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greetingInKorean.py
495 bytes
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groupUsingListAllMatches.py
509 bytes
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hola_mundo.py
2.02 KB
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html_stripper.py
1.68 KB
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html_table_parser.py
2.16 KB
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httpServerLogParser.py
3.48 KB
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idlParse.py
7.53 KB
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include_preprocessor.py
2.63 KB
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indentedGrammarExample.py
1022 bytes
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indented_block_example.py
712 bytes
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inv_regex.py
8.08 KB
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javascript_grammar.g
18.1 KB
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jsonParser.py
4.7 KB
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left_recursion.py
1.41 KB
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lineno_example.py
1.49 KB
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listAllMatches.py
1.57 KB
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lua_parser.py
7.96 KB
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lucene_grammar.py
8.46 KB
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macro_expander.py
1.77 KB
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make_diagram.py
1.62 KB
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matchPreviousDemo.py
586 bytes
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mongodb_query_expression.py
8.46 KB
08/25/2024 02:43:42 PM
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mozilla.ics
752 bytes
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mozillaCalendarParser.py
2.71 KB
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nested.py
579 bytes
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nested_markup.py
1.85 KB
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number_words.py
3.77 KB
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numerics.py
1.34 KB
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oc.py
4.34 KB
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one_to_ninety_nine.py
1.88 KB
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parseTabularData.py
1.68 KB
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parse_python_value.py
2.5 KB
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parse_results_sum_example.py
853 bytes
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partial_gene_match.py
2.33 KB
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pgn.py
3.34 KB
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position.py
2.17 KB
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protobuf_parser.py
3.89 KB
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pythonGrammarParser.py
8.08 KB
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railroad_diagram_demo.py
1.55 KB
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range_check.py
2.84 KB
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readJson.py
120.73 KB
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removeLineBreaks.py
1.8 KB
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roman_numerals.py
3.57 KB
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rosettacode.py
7.43 KB
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scanExamples.py
2.36 KB
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searchParserAppDemo.py
962 bytes
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searchparser.py
10.4 KB
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select_parser.py
8.32 KB
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sexpParser.py
5.23 KB
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shapes.py
1.69 KB
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simpleArith.py
2.42 KB
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simpleBool.py
3.19 KB
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simpleSQL.py
3.16 KB
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simpleWiki.py
1.08 KB
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snmp_api.h
28.69 KB
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sql2dot.py
3.07 KB
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stackish.py
2.71 KB
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statemachine
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tag_emitter.py
1.17 KB
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tag_metadata.py
805 bytes
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test_bibparse.py
8.72 KB
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unicode_denormalizer.py
5.02 KB
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urlExtractor.py
1.03 KB
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urlExtractorNew.py
2.4 KB
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verilog_parse.py
31.15 KB
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withAttribute.py
912 bytes
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wordsToNum.py
2.92 KB
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Editing: lua_parser.py
Close
# # lua_parser.py # # A simple parser for the Lua language. # # Copyright 2020, Paul McGuire # """ from https://www.lua.org/manual/5.1/manual.html#8 chunk ::= {stat [';']} [laststat [';']] block ::= chunk stat ::= varlist '=' explist | functioncall | do block end | while exp do block end | repeat block until exp | if exp then block {elseif exp then block} [else block] end | for Name '=' exp ',' exp [',' exp] do block end | for namelist in explist do block end | function funcname funcbody | local function Name funcbody | local namelist ['=' explist] laststat ::= return [explist] | break funcname ::= Name {'.' Name} [':' Name] varlist ::= var {',' var} var ::= Name | prefixexp '[' exp ']' | prefixexp '.' Name namelist ::= Name {',' Name} explist ::= {exp ','} exp exp ::= nil | false | true | Number | String | '...' | function | prefixexp | tableconstructor | exp binop exp | unop exp prefixexp ::= var | functioncall | '(' exp ')' functioncall ::= prefixexp args | prefixexp ':' Name args args ::= '(' [explist] ')' | tableconstructor | String function ::= function funcbody funcbody ::= '(' [parlist] ')' block end parlist ::= namelist [',' '...'] | '...' tableconstructor ::= '{' [fieldlist] '}' fieldlist ::= field {fieldsep field} [fieldsep] field ::= '[' exp ']' '=' exp | Name '=' exp | exp fieldsep ::= ',' | ';' binop ::= '+' | '-' | '*' | '/' | '^' | '%' | '..' | '<' | '<=' | '>' | '>=' | '==' | '~=' | and | or unop ::= '-' | not | '#' operator precedence: or and < > <= >= ~= == | ~ & << >> .. + - * / // % unary operators (not # - ~) ^ """ import pyparsing as pp ppc = pp.pyparsing_common pp.ParserElement.enable_packrat() LBRACK, RBRACK, LBRACE, RBRACE, LPAR, RPAR = pp.Suppress.using_each("[]{}()") COMMA, SEMI, COLON = pp.Suppress.using_each(",;:") OPT_SEMI = pp.Optional(SEMI).suppress() ELLIPSIS = pp.Literal("...") EQ = pp.Literal("=") keywords = { k.upper(): pp.Keyword(k) for k in """\ return break do end while if then elseif else for in function local repeat until nil false true and or not """.split() } vars().update(keywords) any_keyword = pp.MatchFirst(keywords.values()).set_name("keyword") comment_intro = pp.Literal("--") short_comment = comment_intro + pp.rest_of_line long_comment = comment_intro + LBRACK + ... + RBRACK lua_comment = long_comment | short_comment # must use negative lookahead to ensure we don't parse a keyword as an identifier ident = ~any_keyword + ppc.identifier name = pp.DelimitedList(ident, delim=".", combine=True) namelist = pp.DelimitedList(name) number = ppc.number # does not parse levels multiline_string = pp.QuotedString("[[", endQuoteChar="]]", multiline=True) string = pp.QuotedString("'") | pp.QuotedString('"') | multiline_string exp = pp.Forward() # explist1 ::= {exp ','} exp explist1 = pp.DelimitedList(exp) # set up for recursive definition of 'stmt' (since some statements are # composed of nested statements) stat = pp.Forward().set_name("stat") # laststat ::= return [explist1] | break laststat = pp.Group(RETURN + explist1) | BREAK # block ::= {stat [';']} [laststat[';']] block = pp.Group((stat + OPT_SEMI)[1, ...] + pp.Optional(laststat + OPT_SEMI)) # field ::= '[' exp ']' '=' exp | Name '=' exp | exp field = pp.Group( LBRACK + exp + RBRACK + EQ + pp.Group(exp) | name + EQ + pp.Group(exp) | exp ) # fieldsep ::= ',' | ';' fieldsep = COMMA | SEMI # fieldlist ::= field {fieldsep field} [fieldsep] field_list = pp.DelimitedList(field, delim=fieldsep, allow_trailing_delim=True) # tableconstructor ::= '{' [fieldlist] '}' tableconstructor = pp.Group(LBRACE + pp.Optional(field_list) + RBRACE) # parlist1 ::= namelist [',' '...'] | '...' parlist = namelist + pp.Optional(COMMA + ELLIPSIS) | ELLIPSIS # funcname ::= Name {'.' Name} [':' Name] funcname = pp.Group(name + COLON + name) | name # function ::= function funcbody # funcbody ::= '(' [parlist1] ')' block end funcbody = pp.Group(LPAR + parlist + RPAR) + block + END function = FUNCTION + funcbody # args ::= '(' [explist1] ')' | tableconstructor | String args = LPAR + pp.Optional(explist1) + RPAR | tableconstructor | string # this portion of the spec is left-recursive, must break LR loop # varlist1 ::= var {',' var} # var ::= Name | prefixexp '[' exp ']' | prefixexp '.' Name # prefixexp ::= var | functioncall | '(' exp ')' # functioncall ::= prefixexp args | prefixexp ':' Name args exp_group = pp.Group(LPAR + exp + RPAR) prefixexp = name | exp_group functioncall = pp.Group(prefixexp + pp.Optional(COLON + name) + pp.Group(args)) var = pp.Forward() var_atom = functioncall | name | exp_group index_ref = pp.Group(LBRACK + exp + RBRACK) var_part = pp.Group(var_atom + index_ref) | var_atom var <<= pp.DelimitedList(var_part, delim=".") varlist1 = pp.DelimitedList(var) # exp ::= nil | false | true | Number | String | '...' | # function | prefixexp | tableconstructor exp_atom = ( NIL | FALSE | TRUE | number | string | ELLIPSIS | functioncall | var # prefixexp | tableconstructor ).set_name("exp_atom") # precedence of operations from https://www.lua.org/manual/5.3/manual.html#3.4.8 exp <<= pp.infix_notation( exp_atom, [ ("^", 2, pp.opAssoc.LEFT), ((NOT | pp.oneOf("# - ~")).set_name("not op"), 1, pp.opAssoc.RIGHT), (pp.oneOf("* / // %"), 2, pp.opAssoc.LEFT), (pp.oneOf("+ -"), 2, pp.opAssoc.LEFT), ("..", 2, pp.opAssoc.LEFT), (pp.oneOf("<< >>"), 2, pp.opAssoc.LEFT), ("&", 2, pp.opAssoc.LEFT), ("~", 2, pp.opAssoc.LEFT), ("|", 2, pp.opAssoc.LEFT), (pp.oneOf("< > <= >= ~= =="), 2, pp.opAssoc.LEFT), (AND, 2, pp.opAssoc.LEFT), (OR, 2, pp.opAssoc.LEFT), ], ).set_name("exp") assignment_stat = pp.Optional(LOCAL) + varlist1 + EQ + explist1 func_call_stat = pp.Optional(LOCAL) + functioncall do_stat = DO + block + END while_stat = WHILE + exp + block + END repeat_stat = REPEAT + block + UNTIL + exp for_loop_stat = ( FOR + name + EQ + exp + COMMA + exp + pp.Optional(COMMA + exp) + DO + block + END ) for_seq_stat = FOR + namelist + IN + explist1 + DO + block + END if_stat = ( IF + exp + THEN + block + pp.Group(ELSEIF + exp + THEN + block)[...] + pp.Optional(pp.Group(ELSE + block)) + END ) function_def = pp.Optional(LOCAL) + FUNCTION + funcname + funcbody pp.autoname_elements() # stat ::= varlist1 '=' explist1 | # functioncall | # do block end | # while exp do block end | # repeat block until exp | # if exp then block {elseif exp then block} [else block] end | # for Name '=' exp ',' exp [',' exp] do block end | # for namelist in explist1 do block end | # function funcname funcbody | # local function Name funcbody | # local namelist ['=' explist1] stat <<= pp.Group( assignment_stat | do_stat | while_stat | repeat_stat | for_loop_stat | for_seq_stat | func_call_stat | if_stat | function_def ) lua_script = stat[...].set_name("script") # ignore comments lua_script.ignore(lua_comment) if __name__ == "__main__": sample = r""" function test(x) local t = {foo=1, bar=2, arg=x} n = 0 if t['foo'] then n = n + 1 end if 10 > 8 then n = n + 2 end if (10 > 8) then n = n + 2 end for var in vars do print(var, '=', var) end end """ try: result = lua_script.parseString(sample) result.pprint() except pp.ParseException as pe: print(pe.explain()) raise