| /* |
| * Copyright 1993, 1995 Christopher Seiwald. |
| * |
| * This file is part of Jam - see jam.c for Copyright information. |
| */ |
| |
| /* This file is ALSO: |
| * Copyright 2001-2004 David Abrahams. |
| * Distributed under the Boost Software License, Version 1.0. |
| * (See accompanying file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) |
| */ |
| |
| /* |
| * rules.h - targets, rules, and related information |
| * |
| * This file describes the structures holding the targets, rules, and related |
| * information accumulated by interpreting the statements of the jam files. |
| * |
| * The following are defined: |
| * |
| * RULE - a generic jam rule, the product of RULE and ACTIONS. |
| * ACTIONS - a chain of ACTIONs. |
| * ACTION - a RULE instance with targets and sources. |
| * SETTINGS - variables to set when executing a TARGET's ACTIONS. |
| * TARGETS - a chain of TARGETs. |
| * TARGET - an entity (e.g. a file) that can be built. |
| */ |
| |
| #ifndef RULES_DWA_20011020_H |
| #define RULES_DWA_20011020_H |
| |
| #include "function.h" |
| #include "modules.h" |
| #include "timestamp.h" |
| |
| |
| typedef struct _rule RULE; |
| typedef struct _target TARGET; |
| typedef struct _targets TARGETS; |
| typedef struct _action ACTION; |
| typedef struct _actions ACTIONS; |
| typedef struct _settings SETTINGS ; |
| |
| /* RULE - a generic jam rule, the product of RULE and ACTIONS. */ |
| |
| /* Build actions corresponding to a rule. */ |
| struct rule_actions |
| { |
| int reference_count; |
| FUNCTION * command; /* command string from ACTIONS */ |
| LIST * bindlist; |
| int flags; /* modifiers on ACTIONS */ |
| |
| #define RULE_NEWSRCS 0x01 /* $(>) is updated sources only */ |
| #define RULE_TOGETHER 0x02 /* combine actions on single target */ |
| #define RULE_IGNORE 0x04 /* ignore return status of executes */ |
| #define RULE_QUIETLY 0x08 /* do not mention it unless verbose */ |
| #define RULE_PIECEMEAL 0x10 /* split exec so each $(>) is small */ |
| #define RULE_EXISTING 0x20 /* $(>) is pre-exisitng sources only */ |
| }; |
| |
| typedef struct rule_actions rule_actions; |
| typedef struct argument_list argument_list; |
| |
| struct _rule |
| { |
| OBJECT * name; |
| FUNCTION * procedure; |
| rule_actions * actions; /* build actions, or NULL for no actions */ |
| module_t * module; /* module in which this rule is executed */ |
| int exported; /* nonzero if this rule is supposed to appear in |
| * the global module and be automatically |
| * imported into other modules |
| */ |
| }; |
| |
| /* ACTIONS - a chain of ACTIONs. */ |
| struct _actions |
| { |
| ACTIONS * next; |
| ACTIONS * tail; /* valid only for head */ |
| ACTION * action; |
| }; |
| |
| /* ACTION - a RULE instance with targets and sources. */ |
| struct _action |
| { |
| RULE * rule; |
| TARGETS * targets; |
| TARGETS * sources; /* aka $(>) */ |
| char running; /* has been started */ |
| #define A_INIT 0 |
| #define A_RUNNING_NOEXEC 1 |
| #define A_RUNNING 2 |
| char status; /* see TARGET status */ |
| int refs; |
| }; |
| |
| /* SETTINGS - variables to set when executing a TARGET's ACTIONS. */ |
| struct _settings |
| { |
| SETTINGS * next; |
| OBJECT * symbol; /* symbol name for var_set() */ |
| LIST * value; /* symbol value for var_set() */ |
| }; |
| |
| /* TARGETS - a chain of TARGETs. */ |
| struct _targets |
| { |
| TARGETS * next; |
| TARGETS * tail; /* valid only for head */ |
| TARGET * target; |
| }; |
| |
| /* TARGET - an entity (e.g. a file) that can be built. */ |
| struct _target |
| { |
| OBJECT * name; |
| OBJECT * boundname; /* if search() relocates target */ |
| ACTIONS * actions; /* rules to execute, if any */ |
| SETTINGS * settings; /* variables to define */ |
| |
| short flags; /* status info */ |
| |
| #define T_FLAG_TEMP 0x0001 /* TEMPORARY applied */ |
| #define T_FLAG_NOCARE 0x0002 /* NOCARE applied */ |
| #define T_FLAG_NOTFILE 0x0004 /* NOTFILE applied */ |
| #define T_FLAG_TOUCHED 0x0008 /* ALWAYS applied or -t target */ |
| #define T_FLAG_LEAVES 0x0010 /* LEAVES applied */ |
| #define T_FLAG_NOUPDATE 0x0020 /* NOUPDATE applied */ |
| #define T_FLAG_VISITED 0x0040 /* CWM: Used in debugging */ |
| |
| /* This flag has been added to support a new built-in rule named "RMBAD". It is |
| * used to force removal of outdated targets whose dependencies fail to build. |
| */ |
| #define T_FLAG_RMOLD 0x0080 /* RMBAD applied */ |
| |
| /* This flag was added to support a new built-in rule named "FAIL_EXPECTED" used |
| * to indicate that the result of running a given action should be inverted, |
| * i.e. ok <=> fail. Useful for launching certain test runs from a Jamfile. |
| */ |
| #define T_FLAG_FAIL_EXPECTED 0x0100 /* FAIL_EXPECTED applied */ |
| |
| #define T_FLAG_INTERNAL 0x0200 /* internal INCLUDES node */ |
| |
| /* Indicates that the target must be a file. Prevents matching non-files, like |
| * directories, when a target is searched. |
| */ |
| #define T_FLAG_ISFILE 0x0400 |
| |
| #define T_FLAG_PRECIOUS 0x0800 |
| |
| char binding; /* how target relates to a real file or |
| * folder |
| */ |
| |
| #define T_BIND_UNBOUND 0 /* a disembodied name */ |
| #define T_BIND_MISSING 1 /* could not find real file */ |
| #define T_BIND_PARENTS 2 /* using parent's timestamp */ |
| #define T_BIND_EXISTS 3 /* real file, timestamp valid */ |
| |
| TARGETS * depends; /* dependencies */ |
| TARGETS * dependants; /* the inverse of dependencies */ |
| TARGETS * rebuilds; /* targets that should be force-rebuilt |
| * whenever this one is |
| */ |
| TARGET * includes; /* internal includes node */ |
| TARGET * original_target; /* original_target->includes = this */ |
| char rescanned; |
| |
| timestamp time; /* update time */ |
| timestamp leaf; /* update time of leaf sources */ |
| |
| char fate; /* make0()'s diagnosis */ |
| |
| #define T_FATE_INIT 0 /* nothing done to target */ |
| #define T_FATE_MAKING 1 /* make0(target) on stack */ |
| |
| #define T_FATE_STABLE 2 /* target did not need updating */ |
| #define T_FATE_NEWER 3 /* target newer than parent */ |
| |
| #define T_FATE_SPOIL 4 /* >= SPOIL rebuilds parents */ |
| #define T_FATE_ISTMP 4 /* unneeded temp target oddly present */ |
| |
| #define T_FATE_BUILD 5 /* >= BUILD rebuilds target */ |
| #define T_FATE_TOUCHED 5 /* manually touched with -t */ |
| #define T_FATE_REBUILD 6 |
| #define T_FATE_MISSING 7 /* is missing, needs updating */ |
| #define T_FATE_NEEDTMP 8 /* missing temp that must be rebuild */ |
| #define T_FATE_OUTDATED 9 /* is out of date, needs updating */ |
| #define T_FATE_UPDATE 10 /* deps updated, needs updating */ |
| |
| #define T_FATE_BROKEN 11 /* >= BROKEN ruins parents */ |
| #define T_FATE_CANTFIND 11 /* no rules to make missing target */ |
| #define T_FATE_CANTMAKE 12 /* can not find dependencies */ |
| |
| char progress; /* tracks make1() progress */ |
| |
| #define T_MAKE_INIT 0 /* make1(target) not yet called */ |
| #define T_MAKE_ONSTACK 1 /* make1(target) on stack */ |
| #define T_MAKE_ACTIVE 2 /* make1(target) in make1b() */ |
| #define T_MAKE_RUNNING 3 /* make1(target) running commands */ |
| #define T_MAKE_DONE 4 /* make1(target) done */ |
| #define T_MAKE_NOEXEC_DONE 5 /* make1(target) done with -n in effect */ |
| |
| #ifdef OPT_SEMAPHORE |
| #define T_MAKE_SEMAPHORE 5 /* Special target type for semaphores */ |
| #endif |
| |
| #ifdef OPT_SEMAPHORE |
| TARGET * semaphore; /* used in serialization */ |
| #endif |
| |
| char status; /* exec_cmd() result */ |
| |
| int asynccnt; /* child deps outstanding */ |
| TARGETS * parents; /* used by make1() for completion */ |
| TARGET * scc_root; /* used by make to resolve cyclic includes |
| */ |
| TARGET * rescanning; /* used by make0 to mark visited targets |
| * when rescanning |
| */ |
| int depth; /* The depth of the target in the make0 |
| * stack. |
| */ |
| char * cmds; /* type-punned command list */ |
| |
| char const * failed; |
| }; |
| |
| |
| /* Action related functions. */ |
| void action_free ( ACTION * ); |
| ACTIONS * actionlist ( ACTIONS *, ACTION * ); |
| void freeactions ( ACTIONS * ); |
| SETTINGS * addsettings ( SETTINGS *, int flag, OBJECT * symbol, LIST * value ); |
| void pushsettings ( module_t *, SETTINGS * ); |
| void popsettings ( module_t *, SETTINGS * ); |
| SETTINGS * copysettings ( SETTINGS * ); |
| void freesettings ( SETTINGS * ); |
| void actions_refer( rule_actions * ); |
| void actions_free ( rule_actions * ); |
| |
| /* Rule related functions. */ |
| RULE * bindrule ( OBJECT * rulename, module_t * ); |
| RULE * import_rule ( RULE * source, module_t *, OBJECT * name ); |
| void rule_localize ( RULE * rule, module_t * module ); |
| RULE * new_rule_body ( module_t *, OBJECT * rulename, FUNCTION * func, int exprt ); |
| RULE * new_rule_actions( module_t *, OBJECT * rulename, FUNCTION * command, LIST * bindlist, int flags ); |
| void rule_free ( RULE * ); |
| |
| /* Target related functions. */ |
| void bind_explicitly_located_targets(); |
| TARGET * bindtarget ( OBJECT * const ); |
| void freetargets ( TARGETS * ); |
| TARGETS * targetchain ( TARGETS *, TARGETS * ); |
| TARGETS * targetentry ( TARGETS *, TARGET * ); |
| void target_include ( TARGET * const including, |
| TARGET * const included ); |
| void target_include_many ( TARGET * const including, |
| LIST * const included_names ); |
| TARGETS * targetlist ( TARGETS *, LIST * target_names ); |
| void touch_target ( OBJECT * const ); |
| void clear_includes ( TARGET * ); |
| TARGET * target_scc ( TARGET * ); |
| |
| /* Final module cleanup. */ |
| void rules_done(); |
| |
| #endif |