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Imported from ../bash-2.02.tar.gz.

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This commit is contained in:
Jari Aalto 1998-04-17 19:52:44 +00:00
commit cce855bc5b
323 changed files with 33916 additions and 12321 deletions
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39
command.h
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@ -54,7 +54,8 @@ enum r_instruction {
/* Command Types: */
enum command_type { cm_for, cm_case, cm_while, cm_if, cm_simple, cm_select,
cm_connection, cm_function_def, cm_until, cm_group };
cm_connection, cm_function_def, cm_until, cm_group,
cm_arith, cm_cond };
/* Possible values for the `flags' field of a WORD_DESC. */
#define W_HASDOLLAR 0x01 /* Dollar sign present. */
@ -142,6 +143,12 @@ typedef struct command {
struct group_com *Group;
#if defined (SELECT_COMMAND)
struct select_com *Select;
#endif
#if defined (DPAREN_ARITHMETIC)
struct arith_com *Arith;
#endif
#if defined (COND_COMMAND)
struct cond_com *Cond;
#endif
} value;
} COMMAND;
@ -207,6 +214,34 @@ typedef struct while_com {
COMMAND *action; /* Thing to do while test is non-zero. */
} WHILE_COM;
#if defined (DPAREN_ARITHMETIC)
/* The arithmetic evaluation command, ((...)). Just a set of flags and
a WORD_LIST, of which the first element is the only one used, for the
time being. */
typedef struct arith_com {
int flags;
WORD_LIST *exp;
int line;
} ARITH_COM;
#endif /* DPAREN_ARITHMETIC */
/* The conditional command, [[...]]. This is a binary tree -- we slippped
a recursive-descent parser into the YACC grammar to parse it. */
#define COND_AND 1
#define COND_OR 2
#define COND_UNARY 3
#define COND_BINARY 4
#define COND_TERM 5
#define COND_EXPR 6
typedef struct cond_com {
int flags;
int line;
int type;
WORD_DESC *op;
struct cond_com *left, *right;
} COND_COM;
/* The "simple" command. Just a collection of words and redirects. */
typedef struct simple_com {
int flags; /* See description of CMD flags. */
@ -218,7 +253,7 @@ typedef struct simple_com {
/* The "function definition" command. */
typedef struct function_def {
int ignore; /* See description of CMD flags. */
int flags; /* See description of CMD flags. */
WORD_DESC *name; /* The name of the function. */
COMMAND *command; /* The parsed execution tree. */
int line; /* Line number the function def starts on. */