X-Git-Url: http://git.ozlabs.org/?p=petitboot;a=blobdiff_plain;f=discover%2Fgrub2%2Fparser.y;h=9d79d9b9b136aeeed1abf010ffe81db568f24586;hp=02ca7b2799f53f57bc9ef55f6dcfacbdae880a67;hb=d1f814a1e310b5c1e6b32d5bdbf7b7450c221325;hpb=07fe1662d2a49f4e9e3c5b0451d141f69328262d

diff --git a/discover/grub2/parser.y b/discover/grub2/parser.y
index 02ca7b2..9d79d9b 100644
--- a/discover/grub2/parser.y
+++ b/discover/grub2/parser.y
@@ -2,21 +2,16 @@
 %pure-parser
 %lex-param { yyscan_t scanner }
 %parse-param { struct grub2_parser *parser }
+%parse-param { void *scanner }
 %error-verbose
 
 %{
 #include <talloc/talloc.h>
+#include <log/log.h>
 
 #include "grub2.h"
-#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);
+void yyerror(struct grub2_parser *parser, const char *fmt, ...);
 %}
 
 %union {
@@ -65,6 +60,10 @@ static void yyerror(struct grub2_parser *, char const *s);
 %start	script
 %debug
 
+%{
+#include "lexer.h"
+%}
+
 %%
 
 script:	statements {
@@ -131,6 +130,12 @@ statement:
 		/* we just flatten everything */
 		$$ = create_statement_block(parser, $6);
 	}
+	| "for" TOKEN_DELIM word TOKEN_DELIM "in" TOKEN_DELIM words TOKEN_EOL
+		"do" sep
+		statements
+		"done" {
+		$$ = create_statement_for(parser, $3, $7, $11);
+	}
 
 words:	word {
 		$$ = create_argv(parser);
@@ -148,18 +153,17 @@ word:	TOKEN_WORD
 	}
 
 %%
-void yyerror(struct grub2_parser *parser, char const *s)
+void yyerror(struct grub2_parser *parser, const char *fmt, ...)
 {
-	fprintf(stderr, "%d: error: %s '%s'\n",
-			yyget_lineno(parser->scanner),
-			s, yyget_text(parser->scanner));
-}
+	const char *str;
+	va_list ap;
 
-static void print_token(FILE *fp, int type, YYSTYPE value)
-{
-	if (type != TOKEN_WORD)
-		return;
-	fprintf(fp, "%s", value.word->text);
+	va_start(ap, fmt);
+	str = talloc_vasprintf(parser, fmt, ap);
+	va_end(ap);
+
+	pb_log("parse error: %d('%s'): %s\n", yyget_lineno(parser->scanner),
+					yyget_text(parser->scanner), str);
 }
 
 struct grub2_statements *create_statements(struct grub2_parser *parser)
@@ -245,6 +249,19 @@ struct grub2_statement *create_statement_function(struct grub2_parser *parser,
 	return &stmt->st;
 }
 
+struct grub2_statement *create_statement_for(struct grub2_parser *parser,
+		struct grub2_word *var, struct grub2_argv *list,
+		struct grub2_statements *body)
+{
+	struct grub2_statement_for *stmt =
+		talloc(parser, struct grub2_statement_for);
+	stmt->st.exec = statement_for_execute;
+	stmt->var = var;
+	stmt->list = list;
+	stmt->body = body;
+	return &stmt->st;
+}
+
 void statement_append(struct grub2_statements *stmts,
 		struct grub2_statement *stmt)
 {
@@ -306,14 +323,21 @@ struct grub2_parser *grub2_parser_create(struct discover_context *ctx)
 	return parser;
 }
 
-void grub2_parser_parse(struct grub2_parser *parser, char *buf, int len)
+void grub2_parser_parse(struct grub2_parser *parser, const char *filename,
+		char *buf, int len)
 {
 	YY_BUFFER_STATE bufstate;
 	int rc;
 
+	if (!len)
+		return;
+
+	parser->script->filename = filename;
+
 	bufstate = yy_scan_bytes(buf, len - 1, parser->scanner);
+	yyset_lineno(1, parser->scanner);
 
-	rc = yyparse(parser);
+	rc = yyparse(parser, parser->scanner);
 
 	yy_delete_buffer(bufstate, parser->scanner);