2015-10-26 06:09:29 +08:00
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# Frequently-Asked Questions (FAQ)
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2015-10-26 05:04:14 +08:00
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## Getting Started
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2015-10-26 06:09:29 +08:00
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* [How to I install and run a simple grammar?](getting-started.md)
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* [Why does my parser test program hang?](getting-started.md)
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2015-10-26 05:04:14 +08:00
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## Installation
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2015-10-26 06:23:01 +08:00
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* [Why can't ANTLR (grun) find my lexer or parser?](installation.md)
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* [Why can't I run the ANTLR tool?](installation.md)
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* [Why doesn't my parser compile?](installation.md)
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2015-10-26 05:04:14 +08:00
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## General
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2015-10-26 06:23:01 +08:00
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* [Why do we need ANTLR v4?](general.md)
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* [What is the difference between ANTLR 3 and 4?](general.md)
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* [Why is my expression parser slow?](general.md)
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2015-10-26 05:04:14 +08:00
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## Grammar syntax
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## Lexical analysis
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2015-10-26 06:32:37 +08:00
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* [How can I parse non-ASCII text and use characters in token rules?](lexical.md)
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* [How do I replace escape characters in string tokens?](lexical.md)
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* [Why are my keywords treated as identifiers?](lexical.md)
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* [Why are there no whitespace tokens in the token stream?](lexical.md)
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2015-10-26 05:04:14 +08:00
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## Parse Trees
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* How do I get the input text for a parse-tree subtree?
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* What if I need ASTs not parse trees for a compiler, for example?
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* When do I use listener/visitor vs XPath vs Tree pattern matching?
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## Translation
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* ASTs vs parse trees
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* Decoupling input walking from output generation
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## Actions and semantic predicates
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* How do I test if an optional rule was matched?
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## Error handling
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* How do I perform semantic checking with ANTLR?
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