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CGrammar: Significantly improve indentation; minor textual improvements
This commit is contained in:
Pragmatic Software
parent
8e818baa52
commit
ca91e34a25
@ -13,7 +13,7 @@ use warnings;
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# These are set automatically by the build/commit script
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use constant {
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BUILD_NAME => "PBot",
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BUILD_REVISION => 618,
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BUILD_REVISION => 619,
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BUILD_DATE => "2014-06-07",
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};
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@ -1,3 +1,5 @@
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# C-to-English Grammar
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#
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# Warning: work-in-progress. Many things are incomplete or non-functional.
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#
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# todo:
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@ -12,10 +14,11 @@
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{
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my @defined_types = ('FILE');
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my ($basic, $add_on, @basics, $rule_context, $rule_name, $nonsyntactic, @macros, $array_size);
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my ($basic, $add_on, @basics, $rule_context, $rule_name, @macros, $array_size);
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}
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startrule : translation_unit
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startrule:
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translation_unit
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{
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my $output = $item[-1];
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$output =~ s/\^L(\s*.)/\L$1/g; # lowercase specified characters
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@ -24,13 +27,15 @@ startrule : translation_unit
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}
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startrule(?)
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translation_unit : (comment
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translation_unit:
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(comment
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| external_declaration
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| function_definition
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| function_prototype
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| preproc[matchrule => 'translation_unit'])
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preproc : <skip: '[ \t]*'> definition
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preproc:
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<skip: '[ \t]*'> definition
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| undefinition
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| <skip: '[ \t]*'> inclusion
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| line
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@ -41,7 +46,8 @@ preproc : <skip: '[ \t]*'> definition
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| '#' /^.*\n/
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{ print STDERR "Unknown CPP directive $item[-1]\n"; $return = ""; }
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definition : <skip: '[ \t]*'> /\n*/ macro_definition
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definition:
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<skip: '[ \t]*'> /\n*/ macro_definition
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| <skip: '[ \t]*'> /\s*?\n*#/ 'define' identifier token_sequence(?) .../\s*?\n/
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{
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my $token_sequence = join('',@{$item{'token_sequence(?)'}});
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@ -50,7 +56,8 @@ definition : <skip: '[ \t]*'> /\n*/ macro_definition
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$return .= ".\n";
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}
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macro_definition : '#' 'define' identifier '(' <leftop: identifier ',' identifier > ')' token_sequence "\n"
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macro_definition:
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'#' 'define' identifier '(' <leftop: identifier ',' identifier > ')' token_sequence "\n"
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{
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my @symbols = @{$item[-4]};
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my $last;
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@ -67,32 +74,41 @@ macro_definition : '#' 'define' identifier '(' <leftop: identifier ',' identifie
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$return .= "to use the token sequence \'$item{token_sequence}\'.\n";
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}
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undefinition : <skip: '[ \t]*'> ("\n")(s?) '#' 'undef' identifier
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undefinition:
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<skip: '[ \t]*'> ("\n")(s?) '#' 'undef' identifier
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{ $return = "\nAnnul the definition of $item{identifier}.\n"; }
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inclusion : <skip: '[ \t]*'> /\s*?\n*#/ 'include' '<' filename '>' .../\s*?\n/
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{ $return = "\nInclude the contents of the system file $item{filename}.\n"; }
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inclusion:
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<skip: '[ \t]*'> /\s*?\n*#/ 'include' '<' filename '>' .../\s*?\n/
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{ $return = "\nInclude system file $item{filename}.\n"; }
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| <skip: '[ \t]*'> /\s*?\n*#/ 'include' '"' filename '"' .../\s*?\n/
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{ $return = "\nInclude the contents of the user file $item{filename}.\n"; }
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{ $return = "\nInclude user file $item{filename}.\n"; }
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| <skip: '[ \t]*'> /\s*?\n*#/ 'include' token
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{ $return = "\nImport code noted by the token $item{token}.\n"; }
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filename : /[_\.\-\w\/]+/
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filename:
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/[_\.\-\w\/]+/
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line : '#' 'line' constant ('"' filename '"' { $return = "and filename $item{filename}"; } )(?) /\n+/
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{ $return = "\nNote: for debugging, this is line number $item{constant}" . join('', @{$item[-1]}) . ".\n"; }
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line:
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'#' 'line' constant ('"' filename '"'
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{ $return = "and filename $item{filename}"; }
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)(?) /\n+/
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{ $return = "\nThis is line number $item{constant}" . join('', @{$item[-1]}) . ".\n"; }
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error : '#' 'error' token_sequence(?)
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{ $return = "\nNote: compilation should stop here.\n" . "The message is \"" . join('', @{$item{'token_sequence(?)'}}) . "\".\n"; }
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error:
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'#' 'error' token_sequence(?)
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{ $return = "Stop compilation with error \"" . join('', @{$item{'token_sequence(?)'}}) . "\".\n"; }
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pragma : '#' 'pragma' token_sequence(?)
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pragma:
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'#' 'pragma' token_sequence(?)
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{
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my $pragma = join('',@{$item[-1]});
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if ($pragma) { $pragma = ' "' . $pragma . '"'; }
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$return = "\nNote: a compiler-dependent pragma$pragma is added here.\n";
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}
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preproc_conditional : <skip: '[ \t]*'> /\n*/ if_line[matchrule => $arg{matchrule}]
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preproc_conditional:
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<skip: '[ \t]*'> /\n*/ if_line[matchrule => $arg{matchrule}]
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{ $rule_name = $arg{matchrule}; }
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<matchrule: $rule_name>(s?)
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{ $return = $item{if_line} . join('',@{$item[-1]}); }
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@ -102,7 +118,8 @@ preproc_conditional : <skip: '[ \t]*'> /\n*/ if_line[matchrule => $arg{matchrule
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/\n*/ '#' 'endif'
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{ $return .= "\nNote: This ends a conditional inclusion section.\n"; }
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if_line : <skip: '[ \t]*'> '#' 'ifdef' identifier .../\n+/
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if_line:
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<skip: '[ \t]*'> '#' 'ifdef' identifier .../\n+/
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{
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$return = "\nNote: The current context is interrupted.\n";
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$return .= "The next section is used only if $item{identifier} is defined.\n";
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@ -119,7 +136,8 @@ if_line : <skip: '[ \t]*'> '#' 'ifdef' identifier .../\n+/
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$return .= "\"$item{constant_expression}\".\n";
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}
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elif_parts : ('#' 'elif' constant_expression
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elif_parts:
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('#' 'elif' constant_expression
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{
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$return = "\nNote: we interrupt the current context again.\n";
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$return .= "Instead of the previous precondition, we include ";
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@ -130,24 +148,31 @@ elif_parts : ('#' 'elif' constant_expression
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{ $return .= join('',@{$item[-1]}); }
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)(s)
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else_parts : (/\n+/)(?) '#' 'else' { $rule_name = $arg{matchrule}; } (<matchrule: $rule_name>)[matchrule => $arg{matchrule}](s?)
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else_parts:
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(/\n+/)(?) '#' 'else'
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{ $rule_name = $arg{matchrule}; }
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(<matchrule: $rule_name>)[matchrule => $arg{matchrule}](s?)
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{
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$return = "\nNote: we interrupt the current context once more.\n" . "The following section gets included if the previous precondition fails.\n";
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$return .= join('',@{$item[-1]});
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}
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token_sequence : token(s)
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token_sequence:
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token(s)
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{ $return = join(' ', @{$item[1]}); }
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token : <skip: '[ \t]*'> /\S+/
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token:
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<skip: '[ \t]*'> /\S+/
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{
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$return = $item[-1];
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$return =~ s/"/\\"/; # escaping all quotes.
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}
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external_declaration : declaration
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external_declaration:
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declaration
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function_definition : <skip: '\s*'> declaration_specifiers(?) declarator[context => 'function_definition']
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function_definition:
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<skip: '\s*'> declaration_specifiers(?) declarator[context => 'function_definition']
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'(' parameter_type_list(?) ')' '{' declaration_list(?) statement_list(?) '}'
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{
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my $declaration_specifiers = join('', @{$item{'declaration_specifiers(?)'}});
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@ -186,9 +211,11 @@ function_definition : <skip: '\s*'> declaration_specifiers(?) declarator[context
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# $return .= "End of function $name.\n";
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# $return .= $item{compound_statement};
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1;
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}
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function_prototype : declaration_specifiers(?) declarator[context => 'function_prototype']
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function_prototype:
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declaration_specifiers(?) declarator[context => 'function_prototype']
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'(' parameter_type_list(?) ')' ';'
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{
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my $declaration_specifiers = join('', @{$item{'declaration_specifiers(?)'}});
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@ -216,7 +243,8 @@ function_prototype : declaration_specifiers(?) declarator[context => 'function_p
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$return .= " and returning $return_type.\n";
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}
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compound_statement : '{' declaration_list(?) statement_list(?) '}'
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compound_statement:
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'{' declaration_list(?) statement_list(?) '}'
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{
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my $declaration_list = join('',@{$item{'declaration_list(?)'}});
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my $statement_list = join('',@{$item{'statement_list(?)'}});
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@ -241,7 +269,8 @@ compound_statement : '{' declaration_list(?) statement_list(?) '}'
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1;
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}
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statement_list : comment(?) preproc[matchrule => 'statement'](?) statement
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statement_list:
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comment(?) preproc[matchrule => 'statement'](?) statement
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{
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my $preproc = join('',@{$item{'preproc(?)'}});
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my $comment = join('',@{$item{'comment(?)'}});
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@ -254,7 +283,8 @@ statement_list : comment(?) preproc[matchrule => 'statement'](?) statement
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statement_list(?)
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{ $return .= join('',@{$item{'statement_list(?)'}}); }
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statement : jump_statement
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statement:
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jump_statement
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{ $return = $item{jump_statement}; }
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| compound_statement[context => $arg{context}, name => $arg{context} ]
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| iteration_statement
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@ -262,7 +292,8 @@ statement : jump_statement
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| labeled_statement
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| expression_statement
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iteration_statement : 'for' '(' <commit> for_initialization(?) ';' for_expression(?) ';' for_increment(?) ')'
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iteration_statement:
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'for' '(' <commit> for_initialization(?) ';' for_expression(?) ';' for_increment(?) ')'
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statement[context => 'for loop']
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{
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my $initialization = join('', @{$item{'for_initialization(?)'}});
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@ -301,16 +332,28 @@ iteration_statement : 'for' '(' <commit> for_initialization(?) ';' for_expressio
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| 'do' statement[context => 'do loop'] 'while' '(' expression ')' ';'
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{ $return = "Do the following:\n$item{statement}\nDo this as long as '$item{expression}' evaluates to a positive number.\n"; }
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selection_statement : 'if' <commit> '(' expression[context => 'if block'] ')' statement[context => 'if block']
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for_initialization:
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expression[context => 'statement']
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for_expression:
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expression[context => 'for_expression']
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for_increment:
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expression[context => 'statement']
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selection_statement:
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'if' <commit> '(' expression[context => 'if block'] ')' statement[context => 'if block']
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{ $return = "If $item{expression}, then ^L$item{statement}"; }
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('else' statement[context => 'else block']
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{ $return = "Otherwise, ^L$item{statement}"; })(?)
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{ $return = "Otherwise, ^L$item{statement}"; }
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)(?)
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{ $return .= join('',@{$item[-1]}); }
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| 'switch' '(' expression ')' statement[context => 'switch']
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{ $return = "This section is controlled by a switch based on the expression \'$item{expression}\':\n$item{statement}"; }
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jump_statement : <skip:'\s*'> 'break' ';'
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jump_statement:
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<skip:'\s*'> 'break' ';'
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{ $return = "Break from the current block.\n"; }
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| 'continue' ';'
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{ $return = "Return to the top of the current loop and continue it.\n"; }
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@ -332,7 +375,8 @@ jump_statement : <skip:'\s*'> 'break' ';'
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}
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}
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expression_statement : expression[context => 'statement'](?) ';'
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expression_statement:
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expression[context => 'statement'](?) ';'
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{
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my $item_expression = join('',@{$item[1]});
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if (!$item_expression) {
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@ -342,23 +386,22 @@ expression_statement : expression[context => 'statement'](?) ';'
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}
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}
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labeled_statement : identifier ':' statement
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labeled_statement:
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identifier ':' statement
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{ $return = "The following statement is preceded by the label $item{identifier}.\n$item{statement}"; }
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| 'case' constant_expression ':' statement[context => 'case']
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{ $return = "In the case it has the value $item{constant_expression}, do this:\n$item{statement}"; }
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| 'default' ':' statement
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{ $return = "In the default case, do this:\n$item{statement}"; }
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for_initialization : expression[context => 'statement']
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for_expression : expression[context => 'for_expression']
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for_increment : expression[context => 'statement']
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expression : <leftop: assignment_expression[context => $arg{context}] ',' assignment_expression[context => $arg{context}]>
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expression:
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<leftop: assignment_expression[context => $arg{context}] ',' assignment_expression[context => $arg{context}]>
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{
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$return = join(". We're not done yet. ",@{$item[-1]});
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}
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assignment_expression : unary_expression[context => 'assignment_expression']
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assignment_expression:
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unary_expression[context => 'assignment_expression']
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assignment_operator[context => $arg{context}]
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assignment_expression[context => 'assignment_expression']
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{
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@ -370,22 +413,21 @@ assignment_expression : unary_expression[context => 'assignment_expression']
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} else {
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$return = "$item{unary_expression}, $assignment_operator $assignment_expression";
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}
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$nonsyntactic = '';
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}
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| conditional_expression[context => $arg{context}]
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conditional_expression : logical_OR_AND_expression[context => $arg{context}]
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conditional_expression:
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logical_OR_AND_expression[context => $arg{context}]
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| logical_OR_AND_expression[context => $arg{context}]
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'?' expression[context => 'conditional_expression1']
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':' conditional_expression[context => 'conditional_expression2']
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{
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print "foo2\n";
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$return = "the choice dependent on the value of $item{logical_OR_expression}" .
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" comprising of $item{expression} or $item{conditional_expression}";
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}
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assignment_operator : '='
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assignment_operator:
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'='
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{
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if ($arg{context} eq 'statement') {
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$return = ['Assign to', ' the value' ] ;
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@ -474,9 +516,11 @@ assignment_operator : '='
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}
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}
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constant_expression : conditional_expression
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constant_expression:
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conditional_expression
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logical_OR_AND_expression : <leftop:
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logical_OR_AND_expression:
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<leftop:
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rel_add_mul_shift_expression[context => $arg{context}]
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log_OR_AND_bit_or_and_eq
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rel_add_mul_shift_expression[context => 'logical_OR_AND_expression'] >
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@ -486,7 +530,8 @@ logical_OR_AND_expression : <leftop:
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$return = join ('' , @ands);
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}
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log_OR_AND_bit_or_and_eq : '||' { $return = ' logically orred by '; }
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log_OR_AND_bit_or_and_eq:
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'||' { $return = ' logically orred by '; }
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| '&&' { $return = ' logically anded by '; }
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| '|' { $return = ' bitwise orred by '; }
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| '&' { $return = ' bitwise anded by '; }
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@ -494,7 +539,8 @@ log_OR_AND_bit_or_and_eq : '||' { $return = ' logically orred by '; }
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| '==' { $return = ' is equal to ' ; }
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| '!=' { $return = ' is not equal to ' ; }
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rel_mul_add_ex_op : '+' { $return = ' plus '; }
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rel_mul_add_ex_op:
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'+' { $return = ' plus '; }
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| '-' { $return = ' minus '; }
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| '*' { $return = ' times '; }
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| '/' { $return = ' divided by '; }
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@ -506,9 +552,21 @@ rel_mul_add_ex_op : '+' { $return = ' plus '; }
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| '>' { $return = ' is greater than '; }
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| '<' { $return = ' is less than '; }
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rel_add_mul_shift_expression : cast_expression[context => $arg{context}] ...';'
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unary_operator:
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'&' { $return = 'the address of '; }
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| '*' { $return = 'the contents of '; }
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| '+' { $return = 'the value of '; }
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| '-' ...constant { $return = 'negative '; }
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| '-' { $return = 'minus '; }
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| '~' { $return = "the one's complement of "; }
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| '!' { $return = 'the logical negation of '; }
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rel_add_mul_shift_expression:
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cast_expression[context => $arg{context}] ...';'
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{ $return = $item{cast_expression}; }
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| <leftop: cast_expression[context => $arg{context}]
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| <leftop:
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cast_expression[context => $arg{context}]
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rel_mul_add_ex_op
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cast_expression[context => 'add_mul_shift_expression'] >
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{
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@ -516,30 +574,34 @@ rel_add_mul_shift_expression : cast_expression[context => $arg{context}] ...';'
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$return = join ('' , @ands);
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}
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cast_expression : '(' type_name ')' cast_expression[context => 'recast']
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closure:
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',' | ';' | ')'
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cast_expression:
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'(' type_name ')' cast_expression[context => 'recast']
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{ $return = "a casting into the type \'$item{type_name}\' of $item{cast_expression}"; }
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| unary_expression[context => $arg{context}]
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{ $return = $item{unary_expression}; }
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#( ...closure )(?)
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# {
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# if ($arg{context} eq 'statement' #&& !($return =~ /^Perform/)
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# ) {
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# )
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# {
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# if (${$item[-1]}[0]) {
|
||||
# $return .= ".\n";
|
||||
# }
|
||||
# }
|
||||
#}
|
||||
|
||||
closure : ',' | ';' | ')'
|
||||
|
||||
declaration_list : # <skip: '\s*'>
|
||||
declaration_list:
|
||||
# <skip: '\s*'>
|
||||
declaration(s)
|
||||
{
|
||||
$return = join('', @{$item{'declaration(s)'}});
|
||||
}
|
||||
{ $return = join('', @{$item{'declaration(s)'}}); }
|
||||
|
||||
declaration : declaration_specifiers init_declarator_list(?) ';'
|
||||
declaration:
|
||||
declaration_specifiers init_declarator_list(?) ';'
|
||||
{
|
||||
# This whole thing needs to be re-written to parse declarations inside-out.
|
||||
my @init_list = @{$item{'init_declarator_list(?)'}->[0]};
|
||||
my $init_declaration_list;
|
||||
|
||||
@ -601,9 +663,11 @@ declaration : declaration_specifiers init_declarator_list(?) ';'
|
||||
$return .= $item{'comment(?)'};
|
||||
}
|
||||
|
||||
init_declarator_list : <leftop: init_declarator ',' init_declarator>
|
||||
init_declarator_list:
|
||||
<leftop: init_declarator ',' init_declarator>
|
||||
|
||||
init_declarator : declarator[context => 'init_declarator']
|
||||
init_declarator:
|
||||
declarator[context => 'init_declarator']
|
||||
{
|
||||
$return = $item{declarator};
|
||||
}
|
||||
@ -621,7 +685,8 @@ init_declarator : declarator[context => 'init_declarator']
|
||||
$return .= $item{declarator};
|
||||
}
|
||||
|
||||
initializer : comment(?) assignment_expression comment(?)
|
||||
initializer:
|
||||
comment(?) assignment_expression comment(?)
|
||||
{
|
||||
$return = $item[2];
|
||||
|
||||
@ -636,7 +701,8 @@ initializer : comment(?) assignment_expression comment(?)
|
||||
| '{' comment(?) initializer_list (',' )(?) '}'
|
||||
{ $return = 'the set ' . join('', @{$item{'initializer_list(?)'}}); }
|
||||
|
||||
initializer_list : <leftop: initializer ',' initializer >
|
||||
initializer_list:
|
||||
<leftop: initializer ',' initializer >
|
||||
{
|
||||
my @inits = @{$item[1]};
|
||||
|
||||
@ -650,40 +716,34 @@ initializer_list : <leftop: initializer ',' initializer >
|
||||
}
|
||||
}
|
||||
|
||||
unary_expression : postfix_expression[context => $arg{context}]
|
||||
unary_expression:
|
||||
postfix_expression[context => $arg{context}]
|
||||
{ $return = $item{postfix_expression}; }
|
||||
| '++' unary_expression
|
||||
{
|
||||
if ($arg{context} eq 'statement' ) {
|
||||
$return = "Uptick $item{unary_expression}";
|
||||
$return = "pre-increment $item{unary_expression}";
|
||||
} else {
|
||||
$return = "the now upticked $item{unary_expression}";
|
||||
$return = "the pre-incremented $item{unary_expression}";
|
||||
}
|
||||
}
|
||||
| '--' unary_expression
|
||||
{
|
||||
if ($arg{context} eq 'statement' ) {
|
||||
$return = "Downtick $item{unary_expression}";
|
||||
$return = "Pre-decrement $item{unary_expression}";
|
||||
} else {
|
||||
$return = "the now downticked $item{unary_expression}";
|
||||
$return = "the pre-decremented $item{unary_expression}";
|
||||
}
|
||||
}
|
||||
| unary_operator cast_expression[context => $arg{context}]
|
||||
{ $return = $item{unary_operator} . $item{cast_expression}; }
|
||||
|'sizeof' unary_expression
|
||||
{ $return = "the memory size of $item{unary_expression}"; }
|
||||
{ $return = "the size of $item{unary_expression}"; }
|
||||
|'sizeof' '(' type_name ')'
|
||||
{ $return = "the memory size of the datatype $item{type_name}"; }
|
||||
{ $return = "the size of the datatype $item{type_name}"; }
|
||||
|
||||
unary_operator : '&' { $return = 'the memory location of '; }
|
||||
| '*' { $return = 'the memory contents of '; }
|
||||
| '+' { $return = 'the value of '; }
|
||||
| '-' ...constant {$return = 'negative '; }
|
||||
| '-' { $return = 'minus '; }
|
||||
| '~' { $return = "the one's complement of "; }
|
||||
| '!' { $return = 'the logical negation of '; }
|
||||
|
||||
postfix_expression : primary_expression[context => $arg{context}]
|
||||
postfix_expression:
|
||||
primary_expression[context => $arg{context}]
|
||||
{
|
||||
# must be global. use stack to prevent disasters.
|
||||
# Todo: this is just a Bad Idea, TM. $return needs to be turned to an hash with the
|
||||
@ -698,7 +758,6 @@ postfix_expression : primary_expression[context => $arg{context}]
|
||||
( # function call
|
||||
'(' argument_expression_list(?) ')'
|
||||
{
|
||||
# we're in an un-named sub rule. This is where things get hard.
|
||||
my $arg_exp_list = join('',@{$item{'argument_expression_list(?)'}});
|
||||
if ($arg_exp_list) {
|
||||
$return = " with argument$arg_exp_list";
|
||||
@ -713,6 +772,7 @@ postfix_expression : primary_expression[context => $arg{context}]
|
||||
if ($arg{context} eq 'statement') {
|
||||
$return = "Perform ";
|
||||
}
|
||||
|
||||
# is this function call involving a pointer to a function?
|
||||
if ($basic =~ /parenthetical/) {
|
||||
$return .= "the function pointed by $basic";
|
||||
@ -722,7 +782,6 @@ postfix_expression : primary_expression[context => $arg{context}]
|
||||
}
|
||||
|
||||
# To discriminate between macros and functions.
|
||||
|
||||
foreach (@macros) {
|
||||
if ($basic eq "'$_'") {
|
||||
$return =~ s/Call/Insert/;
|
||||
@ -819,13 +878,15 @@ postfix_expression : primary_expression[context => $arg{context}]
|
||||
$return = $item{primary_expression} . "'s " . join('',@{$item{'postfix_suffix(s)'}});
|
||||
}
|
||||
|
||||
postfix_suffix : ('[' expression ']')(s)
|
||||
postfix_suffix:
|
||||
('[' expression ']')(s)
|
||||
| '.' identifier
|
||||
| '->' identifier
|
||||
| '++'
|
||||
| '--'
|
||||
|
||||
argument_expression_list : <leftop: assignment_expression ',' assignment_expression >
|
||||
argument_expression_list:
|
||||
<leftop: assignment_expression ',' assignment_expression >
|
||||
{
|
||||
my @arg_exp_list = @{$item[1]};
|
||||
my $last = '';
|
||||
@ -839,13 +900,16 @@ argument_expression_list : <leftop: assignment_expression ',' assignment_express
|
||||
}
|
||||
}
|
||||
|
||||
narrow_closure : ';' | ',' | '->'
|
||||
narrow_closure:
|
||||
';' | ',' | '->'
|
||||
|
||||
primary_expression : '(' expression ')' (...narrow_closure)(?)
|
||||
primary_expression:
|
||||
'(' expression ')' (...narrow_closure)(?)
|
||||
{
|
||||
my $expression = $item{expression} ;
|
||||
my $repeats = 1;
|
||||
my $ending = 1;
|
||||
|
||||
if ($expression =~ /^the (\d+)-layered parenthetical expression/) {
|
||||
$repeats = $1 + 1;
|
||||
$expression =~ s/^the \d+-layered parenthetical expression //;
|
||||
@ -875,45 +939,17 @@ primary_expression : '(' expression ')' (...narrow_closure)(?)
|
||||
| constant
|
||||
| string
|
||||
| identifier
|
||||
{ # todo: is this where the quotation marks belong?
|
||||
$return = "'$item{identifier}'";
|
||||
{
|
||||
$return = "`$item{identifier}`";
|
||||
}
|
||||
|
||||
string : m{".*?[^\"]"}
|
||||
|
||||
constant : /-?[0-9]*\.[0-9]+f?/
|
||||
{
|
||||
if ($item[1] =~ /\D/) {
|
||||
$return = "the floating point number $item[1]";
|
||||
} else {
|
||||
$return = $item[1];
|
||||
}
|
||||
}
|
||||
| /0x[0-9a-fA-F]+/ ('L')(?)
|
||||
{
|
||||
if ($item[-1]) {
|
||||
$return = 'the long ' ."hexadecimal number $item[1]";
|
||||
} else {
|
||||
$return = 'the ' . "hexadecimal number $item[1]";
|
||||
}
|
||||
}
|
||||
| /0\d+/
|
||||
{ $return = "the octal number $item[1]"; }
|
||||
|/-?[0-9]+[lu]?/i # integer constant
|
||||
{
|
||||
$return = $item[-1];
|
||||
$return =~ s/[Uu]$/(unsigned)/;
|
||||
$return =~ s/[Ll]$/(long)/;
|
||||
}
|
||||
| m{'.*?[^\']'} # character constant
|
||||
# | enumeration_constant
|
||||
# needs more.
|
||||
|
||||
declarator : direct_declarator
|
||||
declarator:
|
||||
direct_declarator
|
||||
| pointer direct_declarator
|
||||
{ $return = "$item{pointer} $item{direct_declarator}"; }
|
||||
|
||||
direct_declarator : identifier[context => 'direct_declarator'] array_declarator(s?)
|
||||
direct_declarator:
|
||||
identifier[context => 'direct_declarator'] array_declarator(s?)
|
||||
{
|
||||
if(@{$item{'array_declarator(s?)'}}) {
|
||||
$return = join('', @{$item{'array_declarator(s?)'}}) . "'$item{identifier}'";
|
||||
@ -938,7 +974,8 @@ direct_declarator : identifier[context => 'direct_declarator'] array_declarator(
|
||||
| '(' declarator ')'
|
||||
{ $return = $item{declarator}; }
|
||||
|
||||
array_declarator: ( '[' assignment_expression(?) ']'
|
||||
array_declarator:
|
||||
( '[' assignment_expression(?) ']'
|
||||
{
|
||||
if (@{$item{'assignment_expression(?)'}}) {
|
||||
$array_size = 'size '. join('',@{$item{'assignment_expression(?)'}}) . ' ';
|
||||
@ -956,7 +993,8 @@ array_declarator: ( '[' assignment_expression(?) ']'
|
||||
}
|
||||
}
|
||||
|
||||
identifier_list : (identifier ',')(s?) identifier
|
||||
identifier_list:
|
||||
(identifier ',')(s?) identifier
|
||||
{
|
||||
my @identifier_list = @{$item[1]};
|
||||
if ($#identifier_list > 1) {
|
||||
@ -968,10 +1006,13 @@ identifier_list : (identifier ',')(s?) identifier
|
||||
}
|
||||
}
|
||||
|
||||
parameter_type_list : <skip: '[ \t]*'> parameter_list | parameter_list ',' '...'
|
||||
parameter_type_list:
|
||||
<skip: '[ \t]*'> parameter_list
|
||||
| parameter_list ',' '...' # FIXME: never reached
|
||||
{ $return = $item{parameter_list} . ', and possibly other arguments'; }
|
||||
|
||||
parameter_list : <leftop: parameter_declaration ',' parameter_declaration >
|
||||
parameter_list:
|
||||
<leftop: parameter_declaration ',' parameter_declaration>
|
||||
{
|
||||
my @parameter_list = @{$item[1]};
|
||||
if ($#parameter_list > 1) {
|
||||
@ -993,7 +1034,8 @@ parameter_list : <leftop: parameter_declaration ',' parameter_declaration >
|
||||
}
|
||||
}
|
||||
|
||||
parameter_declaration : declaration_specifiers declarator
|
||||
parameter_declaration:
|
||||
declaration_specifiers declarator
|
||||
{ $return = $item{declaration_specifiers} . ' ' . $item{declarator}; }
|
||||
| /,?\.\.\./
|
||||
{ $return = "variadic parameters"; }
|
||||
@ -1001,13 +1043,13 @@ parameter_declaration : declaration_specifiers declarator
|
||||
| ''
|
||||
{ $return = "unspecified parameters"; }
|
||||
|
||||
abstract_declarator : pointer
|
||||
abstract_declarator:
|
||||
pointer
|
||||
| pointer(?) direct_abstract_declarator
|
||||
{ $return = join('',@{$item{'pointer(?)'}}) . $item{direct_abstract_declarator}; }
|
||||
|
||||
# This is going to require some work handling correctly.
|
||||
|
||||
direct_abstract_declarator : '(' abstract_declarator ')'
|
||||
direct_abstract_declarator:
|
||||
'(' abstract_declarator ')'
|
||||
| '[' ']'
|
||||
| '[' constant_expression ']'
|
||||
| DAD '[' ']'
|
||||
@ -1024,10 +1066,12 @@ DAD : #macro for direct_abstract_declarator
|
||||
( '(' ')' )(s?)
|
||||
( '(' parameter_type_list ')' )(s?)
|
||||
|
||||
identifier : ...!reserved identifier_word
|
||||
identifier:
|
||||
...!reserved identifier_word
|
||||
{ $return = $item{identifier_word}; }
|
||||
|
||||
pointer : '*' type_qualifier_list(s) pointer(?)
|
||||
pointer:
|
||||
'*' type_qualifier_list(s) pointer(?)
|
||||
{
|
||||
$return = 'a pointer to a ' . join('', @{$item{'type_qualifier_list(s)'}});
|
||||
$return .= ' ' . join('', @{$item{'pointer(?)'}}) if @{$item{'pointer(?)'}};
|
||||
@ -1043,13 +1087,13 @@ pointer : '*' type_qualifier_list(s) pointer(?)
|
||||
$return .= 'pointer to';
|
||||
}
|
||||
|
||||
integer_constant : /[0-9]+/
|
||||
|
||||
type_qualifier_list : type_qualifier(s)
|
||||
type_qualifier_list:
|
||||
type_qualifier(s)
|
||||
{ $return = join(' ', @{$item{'type_qualifier(s)'}}); }
|
||||
|
||||
|
||||
declaration_specifiers : comment(?) type_specifier ...identifier
|
||||
declaration_specifiers:
|
||||
comment(?) type_specifier ...identifier
|
||||
{ $return = join('', @{$item{'comment(?)'}}) . $item{type_specifier}; }
|
||||
| comment(?) storage_class_specifier declaration_specifiers(?)
|
||||
{
|
||||
@ -1068,27 +1112,30 @@ declaration_specifiers : comment(?) type_specifier ...identifier
|
||||
my $decl_spec = $return = join('',@{$item{'comment(?)'}}) . $item{type_qualifier} . ' ' . join(' ',@{$item{'declaration_specifiers(?)'}});
|
||||
}
|
||||
|
||||
storage_class_specifier : auto | 'extern'
|
||||
storage_class_specifier:
|
||||
'auto'
|
||||
{ $return = "(auto)"; }
|
||||
| 'extern'
|
||||
{ $return = "(declared elsewhere)"; }
|
||||
| 'static'
|
||||
{ $return = "(this declaration is not to be shared)"; }
|
||||
| register | 'typedef'
|
||||
| 'register'
|
||||
{ $return = "(suggestion to be as fast as possible)"; }
|
||||
| 'typedef'
|
||||
{ $return = 'type definition of'; }
|
||||
|
||||
type_qualifier : const | 'volatile'
|
||||
|
||||
const : 'const'
|
||||
type_qualifier:
|
||||
'const'
|
||||
{ $return = "constant"; }
|
||||
| 'volatile'
|
||||
|
||||
type_specifier : 'double'
|
||||
{ $return = 'double'; }
|
||||
| short
|
||||
| long
|
||||
type_specifier:
|
||||
'double'
|
||||
| 'short'
|
||||
| 'long'
|
||||
| 'char'
|
||||
{ $return = 'char'; }
|
||||
| 'int'
|
||||
{ $return = 'int'; }
|
||||
| float
|
||||
| 'float'
|
||||
| 'void'
|
||||
| 'signed'
|
||||
| 'unsigned'
|
||||
@ -1096,13 +1143,8 @@ type_specifier : 'double'
|
||||
| enum_specifier
|
||||
| typedef_name
|
||||
|
||||
short : 'short' { $return = 'short'; }
|
||||
long : 'long' { $return = 'long'; }
|
||||
auto : 'auto' { $return = "(auto)"; }
|
||||
register : 'register' { $return = "(suggestion to be as fast as possible)"; }
|
||||
float : 'float' { $return = 'float'; }
|
||||
|
||||
typedef_name : identifier
|
||||
typedef_name:
|
||||
identifier
|
||||
{
|
||||
my $answer = 0;
|
||||
foreach (@defined_types) {
|
||||
@ -1115,7 +1157,8 @@ typedef_name : identifier
|
||||
$answer;
|
||||
}
|
||||
|
||||
struct_or_union_specifier : comment(?) struct_or_union identifier(?) '{' struct_declaration_list '}'
|
||||
struct_or_union_specifier:
|
||||
comment(?) struct_or_union identifier(?) '{' struct_declaration_list '}'
|
||||
{
|
||||
my $identifier = join('',@{$item{'identifier(?)'}});
|
||||
$return = join('',@{$item{'comment(?)'}}) . $item{struct_or_union} ;
|
||||
@ -1127,7 +1170,8 @@ struct_or_union_specifier : comment(?) struct_or_union identifier(?) '{' struct_
|
||||
$return = "the $item{struct_or_union} $item{identifier}";
|
||||
}
|
||||
|
||||
struct_declaration_list : struct_declaration(s)
|
||||
struct_declaration_list:
|
||||
struct_declaration(s)
|
||||
{
|
||||
my $finaldec;
|
||||
my @declarations = @{$item{'struct_declaration(s)'}};
|
||||
@ -1141,22 +1185,32 @@ struct_declaration_list : struct_declaration(s)
|
||||
}
|
||||
}
|
||||
|
||||
struct_declaration : comment(?) specifier_qualifier_list struct_declarator_list ';'
|
||||
struct_declaration:
|
||||
comment(?) specifier_qualifier_list struct_declarator_list ';'
|
||||
{ $return = join('', @{$item{'comment(?)'}}) . $item{specifier_qualifier_list} . ' ' . $item{struct_declarator_list}; }
|
||||
|
||||
type_name : specifier_qualifier_list abstract_declarator(?)
|
||||
type_name:
|
||||
specifier_qualifier_list abstract_declarator(?)
|
||||
{ $return = $item{specifier_qualifier_list} . join('',@{$item{'abstract_declarator(?)'}}); }
|
||||
|
||||
specifier_qualifier_list : type_specifier specifier_qualifier_list(?)
|
||||
specifier_qualifier_list:
|
||||
type_specifier specifier_qualifier_list(?)
|
||||
{ $return = $item{type_specifier} . join('', @{$item{'specifier_qualifier_list(?)'}}); }
|
||||
|
||||
struct_declarator_list : struct_declarator | struct_declarator ',' struct_declarator_list
|
||||
struct_declarator_list:
|
||||
struct_declarator
|
||||
| struct_declarator ',' struct_declarator_list
|
||||
{ $return = $item{struct_declarator} . join('',@{$item{struct_declarator_list}}); }
|
||||
|
||||
struct_declarator : declarator | declarator(?) ':' constant_expression
|
||||
{ $return = join('',@{$item{'declarator(?)'}}) . " which is set off the bit field $item{constant_expression}"; }
|
||||
struct_declarator:
|
||||
declarator
|
||||
| declarator(?) ':' constant_expression
|
||||
{ $return = join('',@{$item{'declarator(?)'}}) . " a bit field $item{constant_expression}"; }
|
||||
|
||||
struct_or_union : comment(?) ('struct' { $return = 'a structure'; } | 'an union') comment(?)
|
||||
struct_or_union:
|
||||
comment(?) ('struct'
|
||||
{ $return = 'a structure'; }
|
||||
| 'an union') comment(?)
|
||||
{
|
||||
shift @item;
|
||||
foreach (@item) {
|
||||
@ -1168,7 +1222,8 @@ struct_or_union : comment(?) ('struct' { $return = 'a structure'; } | 'an union'
|
||||
}
|
||||
}
|
||||
|
||||
enum_specifier : 'enum' identifier(?) '{' enumerator_list '}'
|
||||
enum_specifier:
|
||||
'enum' identifier(?) '{' enumerator_list '}'
|
||||
{
|
||||
$return = 'enumeration ' ;
|
||||
|
||||
@ -1180,7 +1235,8 @@ enum_specifier : 'enum' identifier(?) '{' enumerator_list '}'
|
||||
}
|
||||
| 'enum' identifier
|
||||
|
||||
enumerator_list : (enumerator ',')(s?) enumerator
|
||||
enumerator_list:
|
||||
(enumerator ',')(s?) enumerator
|
||||
{
|
||||
my @enumerator_list = @{$item[1]};
|
||||
|
||||
@ -1193,7 +1249,8 @@ enumerator_list : (enumerator ',')(s?) enumerator
|
||||
}
|
||||
}
|
||||
|
||||
enumerator : identifier ( '=' constant_expression )(?)
|
||||
enumerator:
|
||||
identifier ( '=' constant_expression )(?)
|
||||
{
|
||||
$return = $item[1];
|
||||
if (@{$item[-1]}) {
|
||||
@ -1201,31 +1258,73 @@ enumerator : identifier ( '=' constant_expression )(?)
|
||||
}
|
||||
}
|
||||
|
||||
comment : comment_c
|
||||
comment:
|
||||
comment_c
|
||||
{ $return = $item{comment_c}; }
|
||||
| comment_cxx
|
||||
{ $return = $item{comment_cxx}; }
|
||||
|
||||
comment_c : m{/\*(.*?)\*/}s
|
||||
comment_c:
|
||||
m{/\*(.*?)\*/}s
|
||||
{
|
||||
$return = $item[1];
|
||||
$return =~ s/^\/\*//;
|
||||
$return =~ s/\*\/$//;
|
||||
$return =~ s|^/\*+\s*||;
|
||||
$return =~ s|\s*\*+/$||;
|
||||
$return =~ s/"/\\"/g;
|
||||
$return = "\nThe author adds this comment here:\n\"" . $return . "\"\n";
|
||||
$return = "\nA comment: \"$return\".\n";
|
||||
}
|
||||
|
||||
comment_cxx : m{\/\/(.*?)\n}
|
||||
comment_cxx:
|
||||
m{//(.*?)\n}
|
||||
{
|
||||
$return = $item[1];
|
||||
$return =~ s/^\/\///;
|
||||
$return = "\nThe author adds this quick comment here:\n" . $return . "\nNow back to the code.\n";
|
||||
$return =~ s|^//\s*||;
|
||||
$return =~ s/\n*$//;
|
||||
$return = "\nQuick comment: \"$return\".\n";
|
||||
}
|
||||
|
||||
identifier_word : /[a-z_\$][a-z0-9_]*/i
|
||||
constant:
|
||||
/-?[0-9]*\.[0-9]+f?/
|
||||
{
|
||||
if ($item[1] =~ /\D/) {
|
||||
$return = "the floating point number $item[1]";
|
||||
} else {
|
||||
$return = $item[1];
|
||||
}
|
||||
}
|
||||
| /0x[0-9a-fA-F]+/ ('L')(?)
|
||||
{
|
||||
if ($item[-1]) {
|
||||
$return = 'the long ' ."hexadecimal number $item[1]";
|
||||
} else {
|
||||
$return = 'the ' . "hexadecimal number $item[1]";
|
||||
}
|
||||
}
|
||||
| /0\d+/
|
||||
{ $return = "the octal number $item[1]"; }
|
||||
|/-?[0-9]+[lu]?/i # integer constant
|
||||
{
|
||||
$return = $item[-1];
|
||||
$return =~ s/[Uu]$/(unsigned)/;
|
||||
$return =~ s/[Ll]$/(long)/;
|
||||
}
|
||||
| m{'.*?[^\']'} # character constant FIXME: doesn't handle escaped quotes
|
||||
# | enumeration_constant
|
||||
# needs more.
|
||||
|
||||
reserved : 'int' | 'double' | 'short' | 'volatile' | 'register' | 'float' | 'signed' | 'unsigned' | 'char' |
|
||||
'for' | 'if' | 'switch' | 'while' | 'do' | 'case' | 'extern' | 'void' | 'exit' | 'return' |
|
||||
'auto' | 'break' | 'const' | 'continue' | 'default' | 'else' | 'enum' | 'struct' | 'goto' | 'long' | 'register' |
|
||||
'sizeof' | 'static' | 'typedef' | 'union'
|
||||
integer_constant:
|
||||
/[0-9]+/
|
||||
|
||||
identifier_word:
|
||||
/[a-z_\$][a-z0-9_]*/i
|
||||
|
||||
string:
|
||||
/".*?[^\"]"/ # FIXME: doesn't handle escaped quotes
|
||||
|
||||
reserved:
|
||||
'int' | 'double' | 'short' | 'volatile' | 'register' | 'float' | 'signed'
|
||||
| 'unsigned' | 'char' | 'for' | 'if' | 'switch' | 'while' | 'do' | 'case'
|
||||
| 'extern' | 'void' | 'exit' | 'return' | 'auto' | 'break' | 'const'
|
||||
| 'continue' | 'default' | 'else' | 'enum' | 'struct' | 'goto' | 'long'
|
||||
| 'register' | 'sizeof' | 'static' | 'typedef' | 'union'
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user