/*

 * Copyright (C) the libgit2 contributors. All rights reserved.

 *

 * This file is part of libgit2, distributed under the GNU GPL v2 with

 * a Linking Exception. For full terms see the included COPYING file.

 */

#ifndef INCLUDE_userdiff_h__

#define INCLUDE_userdiff_h__

/*

 * This file isolates the built in diff driver function name patterns.

 * Most of these patterns are taken from Git (with permission from the

 * original authors for relicensing to libgit2).

 */

typedef struct {

	const char *name;

	const char *fns;

	const char *words;

	int flags;

} git_diff_driver_definition;

#define WORD_DEFAULT "|[^[:space:]]|[\xc0-\xff][\x80-\xbf]+"

/*

 * These builtin driver definition macros have same signature as in core

 * git userdiff.c so that the data can be extracted verbatim

 */

#define PATTERNS(NAME, FN_PATS, WORD_PAT) \

	{ NAME, FN_PATS, WORD_PAT WORD_DEFAULT, 0 }

#define IPATTERN(NAME, FN_PATS, WORD_PAT) \

	{ NAME, FN_PATS, WORD_PAT WORD_DEFAULT, REG_ICASE }

/*

 * The table of diff driver patterns

 *

 * Function name patterns are a list of newline separated patterns that

 * match a function declaration (i.e. the line you want in the hunk header),

 * or a negative pattern prefixed with a '!' to reject a pattern (such as

 * rejecting goto labels in C code).

 *

 * Word boundary patterns are just a simple pattern that will be OR'ed with

 * the default value above (i.e. whitespace or non-ASCII characters).

 */

static git_diff_driver_definition builtin_defs[] = {

IPATTERN("ada",

	 "!^(.*[ \t])?(is[ \t]+new|renames|is[ \t]+separate)([ \t].*)?$\n"

	 "!^[ \t]*with[ \t].*$\n"

	 "^[ \t]*((procedure|function)[ \t]+.*)$\n"

	 "^[ \t]*((package|protected|task)[ \t]+.*)$",

	 /* -- */

	 "[a-zA-Z][a-zA-Z0-9_]*"

	 "|[-+]?[0-9][0-9#_.aAbBcCdDeEfF]*([eE][+-]?[0-9_]+)?"

	 "|=>|\\.\\.|\\*\\*|:=|/=|>=|<=|<<|>>|<>"),

IPATTERN("fortran",

	 "!^([C*]|[ \t]*!)\n"

	 "!^[ \t]*MODULE[ \t]+PROCEDURE[ \t]\n"

	 "^[ \t]*((END[ \t]+)?(PROGRAM|MODULE|BLOCK[ \t]+DATA"

		"|([^'\" \t]+[ \t]+)*(SUBROUTINE|FUNCTION))[ \t]+[A-Z].*)$",

	 /* -- */

	 "[a-zA-Z][a-zA-Z0-9_]*"

	 "|\\.([Ee][Qq]|[Nn][Ee]|[Gg][TtEe]|[Ll][TtEe]|[Tt][Rr][Uu][Ee]|[Ff][Aa][Ll][Ss][Ee]|[Aa][Nn][Dd]|[Oo][Rr]|[Nn]?[Ee][Qq][Vv]|[Nn][Oo][Tt])\\."

	 /* numbers and format statements like 2E14.4, or ES12.6, 9X.

	  * Don't worry about format statements without leading digits since

	  * they would have been matched above as a variable anyway. */

	 "|[-+]?[0-9.]+([AaIiDdEeFfLlTtXx][Ss]?[-+]?[0-9.]*)?(_[a-zA-Z0-9][a-zA-Z0-9_]*)?"

	 "|//|\\*\\*|::|[/<>=]="),

PATTERNS("html", "^[ \t]*(<[Hh][1-6][ \t].*>.*)$",

	 "[^<>= \t]+"),

PATTERNS("java",

	 "!^[ \t]*(catch|do|for|if|instanceof|new|return|switch|throw|while)\n"

	 "^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$",

	 /* -- */

	 "[a-zA-Z_][a-zA-Z0-9_]*"

	 "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"

	 "|[-+*/<>%&^|=!]="

	 "|--|\\+\\+|<<=?|>>>?=?|&&|\\|\\|"),

PATTERNS("matlab",

	 "^[[:space:]]*((classdef|function)[[:space:]].*)$|^%%[[:space:]].*$",

	 "[a-zA-Z_][a-zA-Z0-9_]*|[-+0-9.e]+|[=~<>]=|\\.[*/\\^']|\\|\\||&&"),

PATTERNS("objc",

	 /* Negate C statements that can look like functions */

	 "!^[ \t]*(do|for|if|else|return|switch|while)\n"

	 /* Objective-C methods */

	 "^[ \t]*([-+][ \t]*\\([ \t]*[A-Za-z_][A-Za-z_0-9* \t]*\\)[ \t]*[A-Za-z_].*)$\n"

	 /* C functions */

	 "^[ \t]*(([A-Za-z_][A-Za-z_0-9]*[ \t]+)+[A-Za-z_][A-Za-z_0-9]*[ \t]*\\([^;]*)$\n"

	 /* Objective-C class/protocol definitions */

	 "^(@(implementation|interface|protocol)[ \t].*)$",

	 /* -- */

	 "[a-zA-Z_][a-zA-Z0-9_]*"

	 "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"

	 "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"),

PATTERNS("pascal",

	 "^(((class[ \t]+)?(procedure|function)|constructor|destructor|interface|"

		"implementation|initialization|finalization)[ \t]*.*)$"

	 "\n"

	 "^(.*=[ \t]*(class|record).*)$",

	 /* -- */

	 "[a-zA-Z_][a-zA-Z0-9_]*"

	 "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+"

	 "|<>|<=|>=|:=|\\.\\."),

PATTERNS("perl",

	 "^package .*\n"

	 "^sub [[:alnum:]_':]+[ \t]*"

		"(\\([^)]*\\)[ \t]*)?" /* prototype */

		/*

		 * Attributes.  A regex can't count nested parentheses,

		 * so just slurp up whatever we see, taking care not

		 * to accept lines like "sub foo; # defined elsewhere".

		 *

		 * An attribute could contain a semicolon, but at that

		 * point it seems reasonable enough to give up.

		 */

		"(:[^;#]*)?"

		"(\\{[ \t]*)?" /* brace can come here or on the next line */

		"(#.*)?$\n" /* comment */

	 "^(BEGIN|END|INIT|CHECK|UNITCHECK|AUTOLOAD|DESTROY)[ \t]*"

		"(\\{[ \t]*)?" /* brace can come here or on the next line */

		"(#.*)?$\n"

	 "^=head[0-9] .*",	/* POD */

	 /* -- */

	 "[[:alpha:]_'][[:alnum:]_']*"

	 "|0[xb]?[0-9a-fA-F_]*"

	 /* taking care not to interpret 3..5 as (3.)(.5) */

	 "|[0-9a-fA-F_]+(\\.[0-9a-fA-F_]+)?([eE][-+]?[0-9_]+)?"

	 "|=>|-[rwxoRWXOezsfdlpSugkbctTBMAC>]|~~|::"

	 "|&&=|\\|\\|=|//=|\\*\\*="

	 "|&&|\\|\\||//|\\+\\+|--|\\*\\*|\\.\\.\\.?"

	 "|[-+*/%.^&<>=!|]="

	 "|=~|!~"

	 "|<<|<>|<=>|>>"),

PATTERNS("python", "^[ \t]*((class|def)[ \t].*)$",

	 /* -- */

	 "[a-zA-Z_][a-zA-Z0-9_]*"

	 "|[-+0-9.e]+[jJlL]?|0[xX]?[0-9a-fA-F]+[lL]?"

	 "|[-+*/<>%&^|=!]=|//=?|<<=?|>>=?|\\*\\*=?"),

PATTERNS("ruby", "^[ \t]*((class|module|def)[ \t].*)$",

	 /* -- */

	 "(@|@@|\\$)?[a-zA-Z_][a-zA-Z0-9_]*"

	 "|[-+0-9.e]+|0[xXbB]?[0-9a-fA-F]+|\\?(\\\\C-)?(\\\\M-)?."

	 "|//=?|[-+*/<>%&^|=!]=|<<=?|>>=?|===|\\.{1,3}|::|[!=]~"),

PATTERNS("bibtex", "(@[a-zA-Z]{1,}[ \t]*\\{{0,1}[ \t]*[^ \t\"@',\\#}{~%]*).*$",

	 "[={}\"]|[^={}\" \t]+"),

PATTERNS("tex", "^(\\\\((sub)*section|chapter|part)\\*{0,1}\\{.*)$",

	 "\\\\[a-zA-Z@]+|\\\\.|[a-zA-Z0-9\x80-\xff]+"),

PATTERNS("cpp",

	 /* Jump targets or access declarations */

	 "!^[ \t]*[A-Za-z_][A-Za-z_0-9]*:[[:space:]]*($|/[/*])\n"

	 /* functions/methods, variables, and compounds at top level */

	 "^((::[[:space:]]*)?[A-Za-z_].*)$",

	 /* -- */

	 "[a-zA-Z_][a-zA-Z0-9_]*"

	 "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lLuU]*"

	 "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->\\*?|\\.\\*"),

PATTERNS("csharp",

	 /* Keywords */

	 "!^[ \t]*(do|while|for|if|else|instanceof|new|return|switch|case|throw|catch|using)\n"

	 /* Methods and constructors */

	 "^[ \t]*(((static|public|internal|private|protected|new|virtual|sealed|override|unsafe)[ \t]+)*[][<>@.~_[:alnum:]]+[ \t]+[<>@._[:alnum:]]+[ \t]*\\(.*\\))[ \t]*$\n"

	 /* Properties */

	 "^[ \t]*(((static|public|internal|private|protected|new|virtual|sealed|override|unsafe)[ \t]+)*[][<>@.~_[:alnum:]]+[ \t]+[@._[:alnum:]]+)[ \t]*$\n"

	 /* Type definitions */

	 "^[ \t]*(((static|public|internal|private|protected|new|unsafe|sealed|abstract|partial)[ \t]+)*(class|enum|interface|struct)[ \t]+.*)$\n"

	 /* Namespace */

	 "^[ \t]*(namespace[ \t]+.*)$",

	 /* -- */

	 "[a-zA-Z_][a-zA-Z0-9_]*"

	 "|[-+0-9.e]+[fFlL]?|0[xXbB]?[0-9a-fA-F]+[lL]?"

	 "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"),

PATTERNS("php",

	 "^[ \t]*(((public|private|protected|static|final)[ \t]+)*((class|function)[ \t].*))$",

	 /* -- */

	 "[a-zA-Z_][a-zA-Z0-9_]*"

	 "|[-+0-9.e]+[fFlL]?|0[xX]?[0-9a-fA-F]+[lL]?"

	 "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"),

PATTERNS("javascript",

	 "([a-zA-Z_$][a-zA-Z0-9_$]*(\\.[a-zA-Z0-9_$]+)*[ \t]*=[ \t]*function([ \t][a-zA-Z_$][a-zA-Z0-9_$]*)?[^\\{]*)\n"

	 "([a-zA-Z_$][a-zA-Z0-9_$]*[ \t]*:[ \t]*function([ \t][a-zA-Z_$][a-zA-Z0-9_$]*)?[^\\{]*)\n"

	 "[^a-zA-Z0-9_\\$](function([ \t][a-zA-Z_$][a-zA-Z0-9_$]*)?[^\\{]*)",

	 /* -- */

	 "[a-zA-Z_][a-zA-Z0-9_]*"

	 "|[-+0-9.e]+[fFlL]?|0[xX]?[0-9a-fA-F]+[lL]?"

	 "|[-+*/<>%&^|=!]=|--|\\+\\+|<<=?|>>=?|&&|\\|\\||::|->"),

};

#undef IPATTERN

#undef PATTERNS

#undef WORD_DEFAULT

#endif