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lix/src/libexpr/parser.hh

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* Basic grammar and parser for the Fix language. We use libsglr and friends to do the parsing. The parse table is embedded in the Fix executable using bin2c, which converts an arbitrary file into a C character array.
2003-10-29 16:05:03 +00:00
#ifndef __PARSER_H
#define __PARSER_H
* Use a map to lookup primops. * Various performance improvements in the evaluator. * Do not link against unused (and missing!) libraries (-lsglr, etc.).
2004-02-04 16:03:29 +00:00
#include "eval.hh"
* Basic grammar and parser for the Fix language. We use libsglr and friends to do the parsing. The parse table is embedded in the Fix executable using bin2c, which converts an arbitrary file into a C character array.
2003-10-29 16:05:03 +00:00
* Use a proper namespace. * Optimise header file usage a bit. * Compile the parser as C++.
2006-09-04 21:06:23 +00:00
namespace nix {
* Maintain integrity of the substitute and successor mappings when deleting a path in the store. * Allow absolute paths in Nix expressions. * Get nix-prefetch-url to work again. * Various other fixes.
2003-11-22 18:45:56 +00:00
/* Parse a Nix expression from the specified file. If `path' refers
* Start of an evaluator that uses call-by-need (with thunk updating) instead of (memoised) call-by-name.
2010-03-23 17:30:50 +00:00
to a directory, then "/default.nix" is appended. */
* Use a symbol table to represent identifiers and attribute names efficiently. The symbol table ensures that there is only one copy of each symbol, thus allowing symbols to be compared efficiently using a pointer equality test.
2010-04-13 12:25:42 +00:00
Expr * parseExprFromFile(EvalState & state, Path path);
* Basic grammar and parser for the Fix language. We use libsglr and friends to do the parsing. The parse table is embedded in the Fix executable using bin2c, which converts an arbitrary file into a C character array.
2003-10-29 16:05:03 +00:00
* Maintain integrity of the substitute and successor mappings when deleting a path in the store. * Allow absolute paths in Nix expressions. * Get nix-prefetch-url to work again. * Various other fixes.
2003-11-22 18:45:56 +00:00
/* Parse a Nix expression from the specified string. */
* Use a symbol table to represent identifiers and attribute names efficiently. The symbol table ensures that there is only one copy of each symbol, thus allowing symbols to be compared efficiently using a pointer equality test.
2010-04-13 12:25:42 +00:00
Expr * parseExprFromString(EvalState & state, const string & s, const Path & basePath);
* Maintain integrity of the substitute and successor mappings when deleting a path in the store. * Allow absolute paths in Nix expressions. * Get nix-prefetch-url to work again. * Various other fixes.
2003-11-22 18:45:56 +00:00
* Basic grammar and parser for the Fix language. We use libsglr and friends to do the parsing. The parse table is embedded in the Fix executable using bin2c, which converts an arbitrary file into a C character array.
2003-10-29 16:05:03 +00:00
* Use a proper namespace. * Optimise header file usage a bit. * Compile the parser as C++.
2006-09-04 21:06:23 +00:00
}
* Basic grammar and parser for the Fix language. We use libsglr and friends to do the parsing. The parse table is embedded in the Fix executable using bin2c, which converts an arbitrary file into a C character array.
2003-10-29 16:05:03 +00:00
#endif /* !__PARSER_H */
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