mirror of
https://github.com/ReactionQuake3/reaction.git
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159 lines
3.6 KiB
C
159 lines
3.6 KiB
C
//-----------------------------------------------------------------------------
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//
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// $Id$
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//
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//-----------------------------------------------------------------------------
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//
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// $Log$
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// Revision 1.5 2007/02/03 19:37:19 jbravo
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// Adding CVS headers to new files in CVS.
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//
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//
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//-----------------------------------------------------------------------------
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#ifndef _G_PARSER_H_
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#define _G_PARSER_H_
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///////////////////////////////////////////////////////////////
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#include "g_local.h"
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#define STATE_STACK_SIZE 32
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#define SCRIPT_HASH_SIZE 64
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typedef struct
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{
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int top;
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void *states[STATE_STACK_SIZE];
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} TStateStack;
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typedef int (TParseFunc)(char **tokens, TStateStack *stack);
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// Makro - this is to shut lcc up :(
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#ifndef Q3_VM
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typedef TParseFunc *PParseFunc;
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#else
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#define PParseFunc TParseFunc*
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#endif
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#define _NULL_T(type) (*(type*)0)
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typedef struct _TParseRule
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{
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const char *keyword;
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PParseFunc handler;
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struct _TParseRule *next;
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} TParseRule;
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#define MAX_RULES_IN_STATE 32
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typedef struct
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{
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const char *name;
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void *data;
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int initialized;
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TParseRule *hashTable[SCRIPT_HASH_SIZE];
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TParseRule rules[MAX_RULES_IN_STATE];
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} TParseState;
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#define SCRIPT_STATE(name, data)\
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TParseState name = {\
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#name, /* state name */ \
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data, /* optional data */ \
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0, /* uninitialized */ \
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{NULL}, /* hash table */
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#define ADD_RULE(exp, func) {exp, &func, NULL},
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#define END_STATE_MARKER {NULL, (TParseFunc*)0, (TParseRule*)NULL}\
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}
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#define NO_DATA NULL
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typedef enum
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{
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SHOW_ALL,
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SHOW_WARNING,
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SHOW_ERROR,
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SHOW_NONE
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} TErrorLevel;
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///////////////////////////////////////////////////////////////
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extern int SCRIPT_SHOW_LEVEL;
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#define SCRIPT_INFO(level) if (SCRIPT_SHOW_LEVEL <= (level)) {
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#define END_SCRIPT_INFO() }
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#define NEEDS_TOKENS(num, name)\
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char *name[num];\
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{\
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int TOKEN_INDEX;\
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for (TOKEN_INDEX=0; TOKEN_INDEX<num; TOKEN_INDEX++)\
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if ( (name[TOKEN_INDEX] = Script_GetToken(SCRIPT_INPUT)) == NULL)\
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{\
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SCRIPT_INFO(SHOW_ERROR)\
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G_Printf("* ERROR: %s requires %d arguments instead of %d.\n", __SCRIPT_FUNC__, num, TOKEN_INDEX);\
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END_SCRIPT_INFO();\
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return 0;\
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}\
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}
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#define SCRIPT_FUNC_PROTO(name) int name(char **SCRIPT_INPUT, TStateStack *SCRIPT_STACK)
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#define SCRIPT_FUNC_TOKENS(name)\
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SCRIPT_FUNC_PROTO(name)\
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{\
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const char *__SCRIPT_FUNC__ = #name;
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#define SCRIPT_FUNC(name)\
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SCRIPT_FUNC_PROTO(name)\
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{
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#define END_SCRIPT_FUNC()\
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}
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#define FOR_EACH_RULE(state, rule)\
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{\
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int RULE_INDEX;\
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TParseRule *rule;\
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for (RULE_INDEX=0, rule = &(state).rules[0]; rule->keyword != NULL && rule->handler != NULL; RULE_INDEX++, rule++)
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#define END_FOR_RULE() }
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///////////////////////////////////////////////////////////////
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int Script_PushState(TStateStack *stack, TParseState *state);
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int Script_GetTopState(const TStateStack *stack, TParseState **state);
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int Script_PopState(TStateStack *stack, TParseState **state);
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char* Script_GetToken(char **str);
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PParseFunc Script_FindHandler(char *token, TParseState *state);
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void Script_ParseString(char *str, TParseState *baseState);
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#define SCRIPT_PUSH_STATE(state) Script_PushState(SCRIPT_STACK, &state)
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#define SCRIPT_POP_STATE() Script_PopState(SCRIPT_STACK, NULL)
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#define SCRIPT_TRANSITION_TO(Dest) Transition_To_##Dest
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#define SCRIPT_TRANSITION_FUNC(Dest)\
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SCRIPT_FUNC(SCRIPT_TRANSITION_TO(Dest))\
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{\
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SCRIPT_PUSH_STATE(Dest);\
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return 0;\
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}\
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END_SCRIPT_FUNC()
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SCRIPT_FUNC_PROTO(SFN_SkipComment);
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SCRIPT_FUNC_PROTO(SFN_SkipLineComment);
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SCRIPT_FUNC_PROTO(SFN_SkipToken);
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SCRIPT_FUNC_PROTO(SFN_PopState);
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///////////////////////////////////////////////////////////////
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#endif //_G_PARSER_H_
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