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Elif support to GRUB script (by Deepak Vankadaru).

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* tests/grub_script_if.in: New testcase.
	* conf/tests.rmk: Rule for new testcase.
	* script/parser.y: Grammar rules for elif.
This commit is contained in:
BVK Chaitanya 2010-04-09 22:38:27 +05:30
commit 7d65244782
4 changed files with 67 additions and 12 deletions
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8
ChangeLog
View file

@ -1,3 +1,11 @@
2010-04-09 BVK Chaitanya <bvk.groups@gmail.com>
Elif support to GRUB script (by Deepak Vankadaru).
* tests/grub_script_if.in: New testcase.
* conf/tests.rmk: Rule for new testcase.
* script/parser.y: Grammar rules for elif.
2010-04-09 BVK Chaitanya <bvk.groups@gmail.com>
While and until loops support to GRUB script.

5
conf/tests.rmk
View file

@ -56,6 +56,9 @@ grub_script_for1_SOURCES = tests/grub_script_for1.in
check_SCRIPTS += grub_script_while1
grub_script_while1_SOURCES = tests/grub_script_while1.in
check_SCRIPTS += grub_script_if
grub_script_if_SOURCES = tests/grub_script_if.in
check_SCRIPTS += grub_script_blanklines
grub_script_blanklines_SOURCES = tests/grub_script_blanklines.in
@ -73,9 +76,11 @@ SCRIPTED_TESTS += grub_script_echo_keywords
SCRIPTED_TESTS += grub_script_vars1
SCRIPTED_TESTS += grub_script_for1
SCRIPTED_TESTS += grub_script_while1
SCRIPTED_TESTS += grub_script_if
SCRIPTED_TESTS += grub_script_blanklines
SCRIPTED_TESTS += grub_script_final_semicolon
# dependencies between tests and testing-tools
$(SCRIPTED_TESTS): grub-shell grub-shell-tester
$(FUNCTIONAL_TESTS): functional_test.mod

35
script/parser.y
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@ -74,8 +74,9 @@
%token <arg> GRUB_PARSER_TOKEN_WORD "word"
%type <arglist> word argument arguments0 arguments1
%type <cmd> script_init script
%type <cmd> grubcmd ifcmd forcmd whilecmd untilcmd
%type <cmd> grubcmd ifclause ifcmd forcmd whilecmd untilcmd
%type <cmd> command commands1 menuentry statement
%pure-parser
@ -227,18 +228,28 @@ menuentry: "menuentry"
}
;
if: "if" { grub_script_lexer_ref (state->lexerstate); }
ifcmd: "if"
{
grub_script_lexer_ref (state->lexerstate);
}
ifclause "fi"
{
$$ = $3;
grub_script_lexer_deref (state->lexerstate);
}
;
ifcmd: if commands1 delimiters1 "then" commands1 delimiters1 "fi"
{
$$ = grub_script_create_cmdif (state, $2, $5, 0);
grub_script_lexer_deref (state->lexerstate);
}
| if commands1 delimiters1 "then" commands1 delimiters1 "else" commands1 delimiters1 "fi"
{
$$ = grub_script_create_cmdif (state, $2, $5, $8);
grub_script_lexer_deref (state->lexerstate);
}
ifclause: commands1 delimiters1 "then" commands1 delimiters1
{
$$ = grub_script_create_cmdif (state, $1, $4, 0);
}
| commands1 delimiters1 "then" commands1 delimiters1 "else" commands1 delimiters1
{
$$ = grub_script_create_cmdif (state, $1, $4, $7);
}
| commands1 delimiters1 "then" commands1 delimiters1 "elif" ifclause
{
$$ = grub_script_create_cmdif (state, $1, $4, $7);
}
;
forcmd: "for" "name"

31
tests/grub_script_if.in Normal file
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@ -0,0 +1,31 @@
#! @builddir@/grub-shell-tester
#basic if, execute
if true; then echo yes; fi
#basic if, no execution
if false; then echo no; fi
#if else, execute if path
if true; then echo yes; else echo no; fi
#if else, execute else path
if false; then echo no; else echo yes; fi
#if elif, execute elif
if false; then echo no; elif true; then echo yes; fi
#if elif else, execute else
if false; then echo no; elif false; then echo no; else echo yes; fi
#if elif(1) elif(2), execute elif(2)
if false; then echo no; elif false; then echo no; elif true; then echo yes; fi
#if elif(1) elif(2) else, execute else
if false; then echo no; elif false; then echo no; elif false; then echo no; else echo yes; fi
#if {if elif else}, execute elif
if true; then if false; then echo no; elif true; then echo yes; else echo no; fi; fi
#if {if elif} else, execute elif. ofcourse no dangling-else problem due to "fi"
if true; then if false; then echo no; elif true; then echo yes; fi; else echo no; fi