#include "parser.h"
#include "lexer.h"
+static void print_token(FILE *fp, int type, YYSTYPE value);
+
#define YYLEX_PARAM parser->scanner
+#define YYPRINT(f, t, v) print_token(f, t, v)
static void yyerror(struct grub2_parser *, char const *s);
%}
%type <statement> statement
%type <statements> statements
%type <statement> conditional
+%type <statement> elif
+%type <statements> elifs
%type <argv> words
%type <word> word
%token TOKEN_EOL
%token TOKEN_DELIM
%token <word> TOKEN_WORD
+%token TOKEN_EOF 0
%start script
%debug
parser->script->statements = $1;
}
+eol: TOKEN_EOL | TOKEN_EOF;
+
statements: /* empty */ {
$$ = create_statements(parser);
}
- | statements statement TOKEN_EOL {
+ | statements statement eol {
statement_append($1, $2);
$$ = $1;
}
$$ = $1;
}
-conditional: statement TOKEN_EOL "then" TOKEN_EOL statements {
+sep: TOKEN_DELIM | TOKEN_EOL;
+
+conditional: statement TOKEN_EOL "then" sep statements {
$$ = create_statement_conditional(parser, $1, $5);
}
+elif: "elif" TOKEN_DELIM conditional {
+ $$ = $3;
+ }
+
+elifs: /* empty */ {
+ $$ = create_statements(parser);
+ }
+ | elifs elif {
+ statement_append($1, $2);
+ $$ = $1;
+ }
+
statement:
words {
$$ = create_statement_simple(parser, $1);
| '{' statements '}' {
$$ = create_statement_block(parser, $2);
}
- | "if" TOKEN_DELIM conditional "fi" {
- $$ = create_statement_if(parser, $3, NULL);
+ | "if" TOKEN_DELIM conditional elifs "fi" {
+ $$ = create_statement_if(parser, $3, $4, NULL);
}
| "if" TOKEN_DELIM conditional
- "else" TOKEN_EOL
+ elifs
+ "else" sep
statements
"fi" {
- $$ = create_statement_if(parser, $3, $6);
+ $$ = create_statement_if(parser, $3, $4, $7);
}
| "function" TOKEN_DELIM word TOKEN_DELIM '{' statements '}' {
$$ = create_statement_function(parser, $3, $6);
s, yyget_text(parser->scanner));
}
+static void print_token(FILE *fp, int type, YYSTYPE value)
+{
+ if (type != TOKEN_WORD)
+ return;
+ fprintf(fp, "%s", value.word->text);
+}
+
struct grub2_statements *create_statements(struct grub2_parser *parser)
{
struct grub2_statements *stmts = talloc(parser,
struct grub2_statement *create_statement_if(struct grub2_parser *parser,
struct grub2_statement *conditional,
+ struct grub2_statements *elifs,
struct grub2_statements *else_case)
{
struct grub2_statement_if *stmt =
talloc(parser, struct grub2_statement_if);
+
+ list_add(&elifs->list, &conditional->list);
+
stmt->st.type = STMT_TYPE_IF;
stmt->st.exec = statement_if_execute;
- stmt->conditional = conditional;
+ stmt->conditionals = elifs;
stmt->else_case = else_case;
return &stmt->st;
}
struct grub2_statement_block *stmt =
talloc(parser, struct grub2_statement_block);
stmt->st.type = STMT_TYPE_BLOCK;
- stmt->st.exec = NULL;
+ stmt->st.exec = statement_block_execute;
stmt->statements = stmts;
return &stmt->st;
}