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v0.5.1
v0.5.1
https://github.com/python/cpython
Revision ecafe8e42464b2c91a507fd26de06ce1203dd654 authored by Miss Islington (bot) on 16 June 2019, 18:55:59 UTC, committed by Ned Deily on 16 June 2019, 18:55:59 UTC
(cherry picked from commit 552951563cd5968d25e95306362e41f07d661a88) Co-authored-by: Julien Palard <julien@palard.fr>
1 parent 78309c9
Tip revision: ecafe8e42464b2c91a507fd26de06ce1203dd654 authored by Miss Islington (bot) on 16 June 2019, 18:55:59 UTC
Doc: Remove an ugly space before a dot. (GH-14123) (GH-14130)
Doc: Remove an ugly space before a dot. (GH-14123) (GH-14130)
Tip revision: ecafe8e
grammar.h
/* Grammar interface */
#ifndef Py_GRAMMAR_H
#define Py_GRAMMAR_H
#ifdef __cplusplus
extern "C" {
#endif
#include "bitset.h" /* Sigh... */
/* A label of an arc */
typedef struct {
int lb_type;
char *lb_str;
} label;
#define EMPTY 0 /* Label number 0 is by definition the empty label */
/* A list of labels */
typedef struct {
int ll_nlabels;
label *ll_label;
} labellist;
/* An arc from one state to another */
typedef struct {
short a_lbl; /* Label of this arc */
short a_arrow; /* State where this arc goes to */
} arc;
/* A state in a DFA */
typedef struct {
int s_narcs;
arc *s_arc; /* Array of arcs */
/* Optional accelerators */
int s_lower; /* Lowest label index */
int s_upper; /* Highest label index */
int *s_accel; /* Accelerator */
int s_accept; /* Nonzero for accepting state */
} state;
/* A DFA */
typedef struct {
int d_type; /* Non-terminal this represents */
char *d_name; /* For printing */
int d_initial; /* Initial state */
int d_nstates;
state *d_state; /* Array of states */
bitset d_first;
} dfa;
/* A grammar */
typedef struct {
int g_ndfas;
dfa *g_dfa; /* Array of DFAs */
labellist g_ll;
int g_start; /* Start symbol of the grammar */
int g_accel; /* Set if accelerators present */
} grammar;
/* FUNCTIONS */
grammar *newgrammar(int start);
void freegrammar(grammar *g);
dfa *adddfa(grammar *g, int type, const char *name);
int addstate(dfa *d);
void addarc(dfa *d, int from, int to, int lbl);
dfa *PyGrammar_FindDFA(grammar *g, int type);
int addlabel(labellist *ll, int type, const char *str);
int findlabel(labellist *ll, int type, const char *str);
const char *PyGrammar_LabelRepr(label *lb);
void translatelabels(grammar *g);
void addfirstsets(grammar *g);
void PyGrammar_AddAccelerators(grammar *g);
void PyGrammar_RemoveAccelerators(grammar *);
void printgrammar(grammar *g, FILE *fp);
void printnonterminals(grammar *g, FILE *fp);
#ifdef __cplusplus
}
#endif
#endif /* !Py_GRAMMAR_H */
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