antlr

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Converting Abstract Syntax Tree to Byte code

I am trying to learn to build a simple compiler as a hobby. I am targeting the Java virtual machine.[详细]

2023-03-21 07:09 分类：问答
Antlr single child tree using rewrite rules

I have this formula: negationExpr : NEGATION^* atom ; atom : \'a\'..\'z\' | \'A\'..\'Z\'; With grammer rules above, if I input formula ¬¬a, I wo开发者_运维技巧uld get this tree structure:[详细]

2023-03-21 06:29 分类：问答
ANTLR tree construction problem

If I got a grammar rule like a: A (C|D|E) I can create AST for the rule by attaching rewrite rules for each alternative(C, D, E) like this:[详细]

2023-03-19 20:33 分类：问答
ANTLR: Syntax Errors are ignored when running parser programmatically

I am currently creating a more or less simple expression evaluator using ANTLR. My grammar is straightforward (at least i hope so) and looks like this:[详细]

2023-03-19 19:19 分类：问答
How to have unstructured sections in a file parsed using Antlr

I am creating a translator from my language into many (all?) other object oriented languages.As part of the language I want to support being able to insert target language code sections into the file.[详细]

2023-03-19 07:48 分类：问答
ANTLR test program hangs

I downloaded the latest version of ANTLR (AntlrWorks 1.4.2 with ANTLR 3.3). I started the AntlrWorks UI, and entered the sample expression evaluator grammar. Next I generated code from the AntlrWork[详细]

2023-03-19 06:08 分类：问答
Help with left factoring a grammar to remove left recursion

I have a small custom scripting language, and I am trying to update it to allow boolean expressions such as a > 2 and a > 2 and (b < 3 or c > 5).It\'s the parenthetical expressions that I[详细]

2023-03-19 03:41 分类：问答
if then else conditional evaluation

I have a language which basically is meant to map columns to a new structure in an array. The language is meant for product managers to define mappings without having to know a lot of programming deta[详细]

2023-03-18 16:30 分类：问答
ANTLRWorks :Can't get operators to work

I\'ve been trying to learn ANTLR for some time and finally got my hand开发者_运维问答s on The Definitive ANTLR reference.[详细]

2023-03-18 03:14 分类：问答
ANTLR v3 NoViableAltException not showing up

consider following extract of my grammar: definition :\'(\' \'define\' ( \'(\' variable def_formals \')\' body \')\'[详细]

2023-03-18 03:00 分类：问答