Recursive-Descent parser generators for C
peg(1) and leg(1) are tools for generating recursive-descent parsers: programs that perform pattern matching on text. They processes a Parsing Expression Grammar (PEG) to produce a program that recognises legal sentences of that grammar. peg(1) processes PEGs written using the original syntax described by Ford while leg(1) processes PEGs written using slightly different syntax and conventions that are intended to make it an attractive replacement for parsers built with lex(1) and yacc(1). Unlike lex(1) and yacc(1), peg(1) and leg(1) support unlimited backtracking, provide ordered choice as a means for disambiguation, and can combine scanning (lexical analysis) and parsing (syntactic analysis) into a single activity.
- Developed at devel:tools
- Sources inherited from project openSUSE:Factory
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Source Files
| Filename | Size | Changed |
|---|---|---|
| peg-0.1.20.tar.gz | 0000137305 134 KB | |
| peg.changes | 0000001914 1.87 KB | |
| peg.spec | 0000002418 2.36 KB |
Latest Revision
Ana Guerrero (anag+factory)
accepted
request 1128816
from
Dirk Mueller (dirkmueller)
(revision 2)
- update to 0.1.20:
* src/tree.c (makeInline): Inline nodes remember their parent
rule.
* Replace "$$" in inline actions with "__".
* src/tree.h (struct Inline): Inline nodes remember their
parent rule.
* (main): Don't print #line directives for headers if
nolineFlag is set.
* src/compile.c (allocateVariables): Separated from
defineVariables.
* (Node_compile_c_ko): Allocates and sets local variables
during parse.
* (Rule_compile_c2): Generate yyEnter and yyLeave if rule has
variables.
* (preamble): Macros yyEnter and yyLeave manage local variable
space on stack during parsing.
* src/compile.c: Allow re-entrant parsing.
* Macro YYPARSEFROM_R names the function yyparsefrom_r().
* yyDone takes second argument, the yythunkpos at which actions
start.
* yyparsefrom_r saves and restores thunkpos and val state
during recursive parse.
* yyparsefrom resets thunkpos, val before recursive parse.
- Update to 0.1.18:
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