diff options
Diffstat (limited to 'lib/Automake')
| -rw-r--r-- | lib/Automake/ConfVars.pm | 9 | ||||
| -rw-r--r-- | lib/Automake/File.pm | 362 |
2 files changed, 190 insertions, 181 deletions
diff --git a/lib/Automake/ConfVars.pm b/lib/Automake/ConfVars.pm index 4a27184dd..73b0e1deb 100644 --- a/lib/Automake/ConfVars.pm +++ b/lib/Automake/ConfVars.pm @@ -65,10 +65,13 @@ sub _define_configure_variable ($) sub define_standard_variables () { my $saved_output_vars = $output_vars; - my ($comments, undef, $rules) = - file_contents_internal (1, "$libdir/am/header-vars.am", - new Automake::Location); + my $filename = "$libdir/am/header-vars.am"; + + my @paragraphs = make_paragraphs ($filename); + my ($comments, undef, $rules) = + file_contents_internal (1, $filename, new Automake::Location, + \@paragraphs); foreach my $var (sort keys %configure_vars) { _define_configure_variable ($var); diff --git a/lib/Automake/File.pm b/lib/Automake/File.pm index a9ba70b21..b82e65fed 100644 --- a/lib/Automake/File.pm +++ b/lib/Automake/File.pm @@ -37,195 +37,199 @@ use vars qw (@EXPORT); @EXPORT = qw (file_contents_internal file_contents); # ($COMMENT, $VARIABLES, $RULES) -# file_contents_internal ($IS_AM, $FILE, $WHERE, [%TRANSFORM]) +# file_contents_internal ($IS_AM, $FILENAME, $WHERE, \@PARAGRAPHS, [%TRANSFORM]) # ------------------------------------------------------------ # Return contents of a file from $libdir/am, automatically skipping # macros or rules which are already known. $IS_AM iff the caller is # reading an Automake file (as opposed to the user's Makefile.am). sub file_contents_internal { - my ($is_am, $file, $where, %transform) = @_; + my ($is_am, $filename, $where, $parsref, %transform) = @_; - $where->set ($file); + my @paragraphs = @{$parsref}; - my $result_vars = ''; - my $result_rules = ''; - my $comment = ''; - my $spacing = ''; + my $result_vars = ''; + my $result_rules = ''; + my $comment = ''; + my $spacing = ''; - # The following flags are used to track rules spanning across - # multiple paragraphs. - my $is_rule = 0; # 1 if we are processing a rule. - my $discard_rule = 0; # 1 if the current rule should not be output. + # The following flags are used to track rules spanning across + # multiple paragraphs. + my $is_rule = 0; # 1 if we are processing a rule. + my $discard_rule = 0; # 1 if the current rule should not be output. - # We save the conditional stack on entry, and then check to make - # sure it is the same on exit. This lets us conditionally include - # other files. - my @saved_cond_stack = @cond_stack; - my $cond = new Automake::Condition (@cond_stack); + # We save the conditional stack on entry, and then check to make + # sure it is the same on exit. This lets us conditionally include + # other files. + my @saved_cond_stack = @cond_stack; + my $cond = new Automake::Condition (@cond_stack); - foreach (make_paragraphs ($file, %transform)) + for my $i (0 .. $#paragraphs) { - # FIXME: no line number available. - $where->set ($file); - - # Sanity checks. - error $where, "blank line following trailing backslash:\n$_" - if /\\$/; - error $where, "comment following trailing backslash:\n$_" - if /\\#/; - - if (/^$/) - { - $is_rule = 0; - # Stick empty line before the incoming macro or rule. - $spacing = "\n"; - } - elsif (/$COMMENT_PATTERN/mso) - { - $is_rule = 0; - # Stick comments before the incoming macro or rule. - $comment = "$_\n"; - } - - # Handle inclusion of other files. - elsif (/$INCLUDE_PATTERN/o) - { - if ($cond != FALSE) - { - my $file = ($is_am ? "$libdir/am/" : '') . $1; - $where->push_context ("'$file' included from here"); - # N-ary '.=' fails. - my ($com, $vars, $rules) - = file_contents_internal ($is_am, $file, $where, %transform); - $where->pop_context; - $comment .= $com; - $result_vars .= $vars; - $result_rules .= $rules; - } - } - - # Handling the conditionals. - elsif (/$IF_PATTERN/o) - { - $cond = cond_stack_if ($1, $2, $file); - } - elsif (/$ELSE_PATTERN/o) - { - $cond = cond_stack_else ($1, $2, $file); - } - elsif (/$ENDIF_PATTERN/o) - { - $cond = cond_stack_endif ($1, $2, $file); - } - - # Handling rules. - elsif (/$RULE_PATTERN/mso) - { - $is_rule = 1; - $discard_rule = 0; - # Separate relationship from optional actions: the first - # `new-line tab" not preceded by backslash (continuation - # line). - my $paragraph = $_; - /^(.*?)(?:(?<!\\)\n(\t.*))?$/s; - my ($relationship, $actions) = ($1, $2 || ''); - - # Separate targets from dependencies: the first colon. - $relationship =~ /^([^:]+\S+) *: *(.*)$/som; - my ($targets, $dependencies) = ($1, $2); - # Remove the escaped new lines. - # I don't know why, but I have to use a tmp $flat_deps. - my $flat_deps = flatten ($dependencies); - my @deps = split (' ', $flat_deps); - - foreach (split (' ', $targets)) - { - # FIXME: 1. We are not robust to people defining several targets - # at once, only some of them being in %dependencies. The - # actions from the targets in %dependencies are usually generated - # from the content of %actions, but if some targets in $targets - # are not in %dependencies the ELSE branch will output - # a rule for all $targets (i.e. the targets which are both - # in %dependencies and $targets will have two rules). - - # FIXME: 2. The logic here is not able to output a - # multi-paragraph rule several time (e.g. for each condition - # it is defined for) because it only knows the first paragraph. - - # FIXME: 3. We are not robust to people defining a subset - # of a previously defined "multiple-target" rule. E.g. - # 'foo:' after 'foo bar:'. - - # Output only if not in FALSE. - if (defined $dependencies{$_} && $cond != FALSE) - { - depend ($_, @deps); - register_action ($_, $actions); - } - else - { - # Free-lance dependency. Output the rule for all the - # targets instead of one by one. - my @undefined_conds = - Automake::Rule::define ($targets, $file, - $is_am ? RULE_AUTOMAKE : RULE_USER, - $cond, $where); - for my $undefined_cond (@undefined_conds) - { - my $condparagraph = $paragraph; - $condparagraph =~ s/^/$undefined_cond->subst_string/gme; - $result_rules .= "$spacing$comment$condparagraph\n"; - } - if (scalar @undefined_conds == 0) - { - # Remember to discard next paragraphs - # if they belong to this rule. - # (but see also FIXME: #2 above.) - $discard_rule = 1; - } - $comment = $spacing = ''; - last; - } - } - } - - elsif (/$ASSIGNMENT_PATTERN/mso) - { - my ($var, $type, $val) = ($1, $2, $3); - error $where, "variable '$var' with trailing backslash" - if /\\$/; - - $is_rule = 0; - - Automake::Variable::define ($var, - $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE, - $type, $cond, $val, $comment, $where, - VAR_ASIS) - if $cond != FALSE; - - $comment = $spacing = ''; - } - else - { - # This isn't an error; it is probably some tokens which - # configure is supposed to replace, such as '@SET-MAKE@', - # or some part of a rule cut by an if/endif. - if (! $cond->false && ! ($is_rule && $discard_rule)) - { - s/^/$cond->subst_string/gme; - $result_rules .= "$spacing$comment$_\n"; - } - $comment = $spacing = ''; - } + $_ = $paragraphs[$i]; + # FIXME: Why is it needed to add the extension here when it was not + # before the changes in this commit. (see t/location) + $where->set ("$filename.am"); + + # Sanity checks. + error $where, "blank line following trailing backslash:\n$_" + if /\\$/; + error $where, "comment following trailing backslash:\n$_" + if /\\#/; + + if (/^$/) + { + $is_rule = 0; + # Stick empty line before the incoming macro or rule. + $spacing = "\n"; + } + elsif (/$COMMENT_PATTERN/mso) + { + $is_rule = 0; + # Stick comments before the incoming macro or rule. + $comment = "$_\n"; + } + + # Handle inclusion of other files. + elsif (/$INCLUDE_PATTERN/o) + { + if ($cond != FALSE) + { + my $filename = ($is_am ? "$libdir/am/" : '') . $1; + $where->push_context ("'$filename' included from here"); + my @paragraphs = make_paragraphs ($filename, %transform); + # N-ary '.=' fails. + my ($com, $vars, $rules) = + file_contents_internal ($is_am, $filename, $where, + \@paragraphs, %transform); + $where->pop_context; + $comment .= $com; + $result_vars .= $vars; + $result_rules .= $rules; + } + } + + # Handling the conditionals. + elsif (/$IF_PATTERN/o) + { + $cond = cond_stack_if ($1, $2, $filename); + } + elsif (/$ELSE_PATTERN/o) + { + $cond = cond_stack_else ($1, $2, $filename); + } + elsif (/$ENDIF_PATTERN/o) + { + $cond = cond_stack_endif ($1, $2, $filename); + } + + # Handling rules. + elsif (/$RULE_PATTERN/mso) + { + $is_rule = 1; + $discard_rule = 0; + # Separate relationship from optional actions: the first + # `new-line tab" not preceded by backslash (continuation + # line). + my $paragraph = $_; + /^(.*?)(?:(?<!\\)\n(\t.*))?$/s; + my ($relationship, $actions) = ($1, $2 || ''); + + # Separate targets from dependencies: the first colon. + $relationship =~ /^([^:]+\S+) *: *(.*)$/som; + my ($targets, $dependencies) = ($1, $2); + # Remove the escaped new lines. + # I don't know why, but I have to use a tmp $flat_deps. + my $flat_deps = flatten ($dependencies); + my @deps = split (' ', $flat_deps); + + foreach (split (' ', $targets)) + { + # FIXME: 1. We are not robust to people defining several targets + # at once, only some of them being in %dependencies. The + # actions from the targets in %dependencies are usually generated + # from the content of %actions, but if some targets in $targets + # are not in %dependencies the ELSE branch will output + # a rule for all $targets (i.e. the targets which are both + # in %dependencies and $targets will have two rules). + + # FIXME: 2. The logic here is not able to output a + # multi-paragraph rule several time (e.g. for each condition + # it is defined for) because it only knows the first paragraph. + + # FIXME: 3. We are not robust to people defining a subset + # of a previously defined "multiple-target" rule. E.g. + # 'foo:' after 'foo bar:'. + + # Output only if not in FALSE. + if (defined $dependencies{$_} && $cond != FALSE) + { + depend ($_, @deps); + register_action ($_, $actions); + } + else + { + # Free-lance dependency. Output the rule for all the + # targets instead of one by one. + my @undefined_conds = + Automake::Rule::define ($targets, $filename, + $is_am ? RULE_AUTOMAKE : RULE_USER, + $cond, $where); + for my $undefined_cond (@undefined_conds) + { + my $condparagraph = $paragraph; + $condparagraph =~ s/^/$undefined_cond->subst_string/gme; + $result_rules .= "$spacing$comment$condparagraph\n"; + } + if (scalar @undefined_conds == 0) + { + # Remember to discard next paragraphs + # if they belong to this rule. + # (but see also FIXME: #2 above.) + $discard_rule = 1; + } + $comment = $spacing = ''; + last; + } + } + } + + elsif (/$ASSIGNMENT_PATTERN/mso) + { + my ($var, $type, $val) = ($1, $2, $3); + error $where, "variable '$var' with trailing backslash" + if /\\$/; + + $is_rule = 0; + + Automake::Variable::define ($var, + $is_am ? VAR_AUTOMAKE : VAR_MAKEFILE, + $type, $cond, $val, $comment, $where, + VAR_ASIS) + if $cond != FALSE; + + $comment = $spacing = ''; + } + else + { + # This isn't an error; it is probably some tokens which + # configure is supposed to replace, such as '@SET-MAKE@', + # or some part of a rule cut by an if/endif. + if (! $cond->false && ! ($is_rule && $discard_rule)) + { + s/^/$cond->subst_string/gme; + $result_rules .= "$spacing$comment$_\n"; + } + $comment = $spacing = ''; + } } - error ($where, @cond_stack ? - "unterminated conditionals: @cond_stack" : - "too many conditionals closed in include file") + error ($where, @cond_stack ? + "unterminated conditionals: @cond_stack" : + "too many conditionals closed in include file") if "@saved_cond_stack" ne "@cond_stack"; - return ($comment, $result_vars, $result_rules); + return ($comment, $result_vars, $result_rules); } @@ -236,11 +240,13 @@ sub file_contents_internal # macros or rules which are already known. sub file_contents { - my ($basename, $where, %transform) = @_; - my ($comments, $variables, $rules) = - file_contents_internal (1, "$libdir/am/$basename.am", $where, - %transform); - return "$comments$variables$rules"; + my ($basename, $where, %transform) = @_; + my @paragraphs = make_paragraphs ("$libdir/am/$basename.am", %transform); + my ($comments, $variables, $rules) = + file_contents_internal (1, $basename, $where, + \@paragraphs, %transform); + + return "$comments$variables$rules"; } 1; |