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|
%{
#include "cmd.h"
#include "lex.yy.c"
%}
%union {
char *str;
struct Command *cmd;
CommandType cmdType;
}
%token <str> WORD STRING
%token NEWLINE PIPE AND OR
%type <cmd> line command part
%type <cmdType> separator
%%
line:
command NEWLINE { $$ = $1; runcmd($$); }
| NEWLINE { $$ = NULL; }
;
command:
part { $$ = $1; }
| part separator command {
$$ = malloc(sizeof(Command));
$$->type = $2;
$$->left = $1;
$$->right = $3;
}
;
part:
part WORD {
$$ = $1;
$$->argc++;
$$->args = realloc($$->args, ($$->argc) * sizeof(char *));
$$->args[$$->argc - 1] = $2;
$$->args[$$->argc] = NULL;
printf("word[%d] = %s\n", $$->argc-1,$$->args[$$->argc-1]);
}
| part STRING {
$$ = $1;
$$->argc++;
$$->args = realloc($$->args, ($$->argc) * sizeof(char *));
$$->args[$$->argc - 1] = $2;
$$->args[$$->argc] = NULL;
}
| WORD {
$$ = malloc(sizeof(Command));
$$->type = CMD_TYPE_NORMAL;
$$->args = malloc(2 * sizeof(char *));
$$->args[0] = $1;
$$->args[1] = NULL;
$$->argc = 1;
printf("word[%d] = %s\n", $$->argc-1,$$->args[$$->argc-1]);
$$->left = $$->right = NULL;
}
| STRING {
$$ = malloc(sizeof(Command));
$$->type = CMD_TYPE_NORMAL;
$$->args = malloc(2 * sizeof(char *));
$$->args[0] = $1;
$$->args[1] = NULL;
$$->argc = 1;
$$->left = $$->right = NULL;
}
;
separator:
PIPE { $$ = CMD_TYPE_PIPE; }
| AND { $$ = CMD_TYPE_AND; }
| OR { $$ = CMD_TYPE_OR; }
;
%%
|
