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C++ primaryexp函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了C++中primaryexp函数的典型用法代码示例。如果您正苦于以下问题：C++ primaryexp函数的具体用法？C++ primaryexp怎么用？C++ primaryexp使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了primaryexp函数的11个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: assignment

static void assignment (LexState *ls, struct LHS_assign *lh, int nvars) {
  expdesc e;
  check_condition(ls, VLOCAL <= lh->v.k && lh->v.k <= VINDEXED,
                      "syntax error");
  if (testnext(ls, ',')) {  /* assignment -> `,' primaryexp assignment */
    struct LHS_assign nv;
    nv.prev = lh;
    primaryexp(ls, &nv.v);
    if (nv.v.k == VLOCAL)
      check_conflict(ls, lh, &nv.v);
    assignment(ls, &nv, nvars+1);
  }
  else {  /* assignment -> `=' explist1 */
    int nexps;
    checknext(ls, '=');
    nexps = explist1(ls, &e);
    if (nexps != nvars) {
      adjust_assign(ls, nvars, nexps, &e);
      if (nexps > nvars)
        ls->fs->freereg -= nexps - nvars;  /* remove extra values */
    }
    else {
      luaK_setoneret(ls->fs, &e);  /* close last expression */
      luaK_storevar(ls->fs, &lh->v, &e);
      return;  /* avoid default */
    }
  }
  init_exp(&e, VNONRELOC, ls->fs->freereg-1);  /* default assignment */
  luaK_storevar(ls->fs, &lh->v, &e);
}
开发者ID:xiaofeng，项目名称:Arcemu，代码行数:30，代码来源:lparser.c


示例2: simpleexp

static void simpleexp(LexState* ls, expdesc* v)
{
	/* simpleexp -> NUMBER | STRING | NIL | true | false | ... |
		  constructor | FUNCTION body | primaryexp */
	switch (ls->t.token)
	{
		case TK_NUMBER:
		{
			init_exp(v, VKNUM, 0);
			v->u.nval = ls->t.seminfo.r;
			break;
		}
		case TK_STRING:
		{
			codestring(ls, v, ls->t.seminfo.ts);
			break;
		}
		case TK_NIL:
		{
			init_exp(v, VNIL, 0);
			break;
		}
		case TK_TRUE:
		{
			init_exp(v, VTRUE, 0);
			break;
		}
		case TK_FALSE:
		{
			init_exp(v, VFALSE, 0);
			break;
		}
		case TK_DOTS:	 /* vararg */
		{
			FuncState* fs = ls->fs;
			check_condition(ls, fs->f->is_vararg,
					"cannot use " LUA_QL("...") " outside a vararg function");
			fs->f->is_vararg &= ~VARARG_NEEDSARG;  /* don't need 'arg' */
			init_exp(v, VVARARG, luaK_codeABC(fs, OP_VARARG, 0, 1, 0));
			break;
		}
		case '{':	 /* constructor */
		{
			constructor(ls, v);
			return;
		}
		case TK_FUNCTION:
		{
			luaX_next(ls);
			body(ls, v, 0, ls->linenumber);
			return;
		}
		default:
		{
			primaryexp(ls, v);
			return;
		}
	}
	luaX_next(ls);
}
开发者ID:Ape，项目名称:DCPUToolchain，代码行数:60，代码来源:lparser.c


示例3: exprstat

static void exprstat (LexState *ls) {
  /* stat -> func | assignment */
  FuncState *fs = ls->fs;
  struct LHS_assign v;
  primaryexp(ls, &v.v);
  if (v.v.k == VCALL)  /* stat -> func */
    SETARG_C(getcode(fs, &v.v), 1);  /* call statement uses no results */
  else {  /* stat -> assignment */
    v.prev = NULL;
    assignment(ls, &v, 1);
  }
}
开发者ID:xiaofeng，项目名称:Arcemu，代码行数:12，代码来源:lparser.c


示例4: exprstat

static void exprstat (LexState *ls) {
  /* stat -> func | assignment */
  FuncState *fs = ls->fs;
  struct LHS_assign v;
  primaryexp(ls, &v.v);
  if (v.v.k == VCALL) {  /* stat -> func */
    luaK_setcallreturns(fs, &v.v, 0);  /* call statement uses no results */
  }
  else {  /* stat -> assignment */
    v.prev = NULL;
    assignment(ls, &v, 1);
  }
}
开发者ID:BitMax，项目名称:openitg，代码行数:13，代码来源:lparser.c


示例5: simpleexp

static void simpleexp (LexState *ls, expdesc *v) {
  /* simpleexp -> NUMBER | STRING | NIL | constructor | FUNCTION body
               | primaryexp */
  switch (ls->t.token) {
    case TK_NUMBER: {
      init_exp(v, VK, luaK_numberK(ls->fs, ls->t.seminfo.r));
      next(ls);  /* must use `seminfo' before `next' */
      break;
    }
    case TK_STRING: {
      codestring(ls, v, ls->t.seminfo.ts);
      next(ls);  /* must use `seminfo' before `next' */
      break;
    }
    case TK_WSTRING: {
      codewstring(ls, v, ls->t.seminfo.ts);
      next(ls);  /* must use `seminfo' before `next' */
      break;
    }
    case TK_NIL: {
      init_exp(v, VNIL, 0);
      next(ls);
      break;
    }
    case TK_TRUE: {
      init_exp(v, VTRUE, 0);
      next(ls);
      break;
    }
    case TK_FALSE: {
      init_exp(v, VFALSE, 0);
      next(ls);
      break;
    }
    case '{': {  /* constructor */
      constructor(ls, v);
      break;
    }
    case TK_FUNCTION: {
      next(ls);
      body(ls, v, 0, ls->linenumber);
      break;
    }
    default: {
      primaryexp(ls, v);
      break;
    }
  }
}
开发者ID:gitrider，项目名称:wxsj2，代码行数:49，代码来源:lparser.c


示例6: assignment

static void assignment (LexState *ls, struct LHS_assign *lh, int nvars, BinOpr *opr) {
  expdesc e;
  check_condition(ls, VLOCAL <= lh->v.k && lh->v.k <= VINDEXED,
                      "syntax error");
  if (testnext(ls, ',')) {  /* assignment -> `,' primaryexp assignment */
    struct LHS_assign nv;
    nv.prev = lh;
    primaryexp(ls, &nv.v);
    if (nv.v.k == VLOCAL)
      check_conflict(ls, lh, &nv.v);
    assignment(ls, &nv, nvars+1, opr);
  }
  else {  /* assignment -> `=' explist1 */
    int nexps;

	*opr = OPR_NOBINOPR;
	switch(ls->t.token)
	{
	case '=': break;
	case TK_CONCATASSIGN: *opr = OPR_CONCAT; break;
	case TK_ADDASSIGN: *opr = OPR_ADD; break;
	case TK_SUBASSIGN: *opr = OPR_SUB; break;
	case TK_MULASSIGN: *opr = OPR_MUL; break;
	case TK_DIVASSIGN: *opr = OPR_DIV; break;
	case TK_POWASSIGN: *opr = OPR_POW; break;
	case TK_MODASSIGN: *opr = OPR_MOD; break;
	default:
		luaX_syntaxerror(ls, "unexpected symbol");
		break;
	};
	luaX_next(ls);
    nexps = explist1(ls, &e);
    if (nexps != nvars) {
      adjust_assign(ls, nvars, nexps, &e);
      if (nexps > nvars)
        ls->fs->freereg -= nexps - nvars;  /* remove extra values */
    }
    else {
      luaK_setoneret(ls->fs, &e);  /* close last expression */
      luaK_storevar(ls->fs, &lh->v, &e, *opr);
      return;  /* avoid default */
    }
  }
  init_exp(&e, VNONRELOC, ls->fs->freereg-1);  /* default assignment */
  luaK_storevar(ls->fs, &lh->v, &e, *opr);
}
开发者ID:elasota，项目名称:rdx2，代码行数:46，代码来源:lparser.c


示例7: assignment

static void assignment (LexState *ls, struct LHS_assign *lh, int nvars) {
  expdesc e;
  check_condition(ls, VLOCAL <= lh->v.k && lh->v.k <= VINDEXED,
                      "syntax error");
  if (testnext(ls, ',')) {  /* assignment -> `,' primaryexp assignment */
    struct LHS_assign nv;
    nv.prev = lh;
    primaryexp(ls, &nv.v);
    if (nv.v.k == VLOCAL)
      check_conflict(ls, lh, &nv.v);
    luaY_checklimit(ls->fs, nvars, LUAI_MAXCCALLS - ls->L->nCcalls,
                    "variables in assignment");
    assignment(ls, &nv, nvars+1);
  }
  else {  /* assignment -> `=' explist1 */
    int nexps;
      
      /* hook for inc_assignment */
      if(nvars==1) {
          switch(ls->t.token) {
              case '+': case '-': case '*': case '/': case TK_CONCAT:
                  inc_assignment(ls,lh);
                  /* If you're using Shook's table unpack patch, return 0 here.*/
                  return;
          }
      }
      
    checknext(ls, '=');
    nexps = explist1(ls, &e);
    if (nexps != nvars) {
      adjust_assign(ls, nvars, nexps, &e);
      if (nexps > nvars)
        ls->fs->freereg -= nexps - nvars;  /* remove extra values */
    }
    else {
      luaK_setoneret(ls->fs, &e);  /* close last expression */
      luaK_storevar(ls->fs, &lh->v, &e);
      return;  /* avoid default */
    }
  }
  init_exp(&e, VNONRELOC, ls->fs->freereg-1);  /* default assignment */
  luaK_storevar(ls->fs, &lh->v, &e);
}
开发者ID:igoumeninja，项目名称:GAmuza，代码行数:43，代码来源:lparser.c


示例8: changevalue

static void changevalue (LexState *ls, int op) {
  FuncState *fs = ls->fs;
  expdesc v, e1, e2;
  testnext(ls, '(');
  primaryexp(ls, &v);
  e1 = v;
  if (v.k == VINDEXED)
    luaK_reserveregs(fs, 1);  /* <- this call solved the problem with indexed values */
  if (testnext(ls, ',')) {
    luaK_exp2nextreg(fs, &e1);  /* <- this call solved the problem with indexed values, 0.32.0 */
    expr(ls, &e2);
  } else {  /* using special opcodes is not faster */
    init_exp(&e2, VKNUM, 0);
    e2.u.nval = (lua_Integer)1;
  }
  testnext(ls, ')');
  codearith(fs, op, &e1, &e2);
  luaK_setoneret(fs, &e1);  /* close last expression */
  luaK_storevar(fs, &v, &e1);
}
开发者ID:dx168b，项目名称:luafltk，代码行数:20，代码来源:lparser.c


示例9: exprstat

static void exprstat (LexState *ls) {
#if LUA_MUTATION_OPERATORS
  /* stat -> func | compound | assignment */
#else
  /* stat -> func | assignment */
#endif /* LUA_MUTATION_OPERATORS */
  FuncState *fs = ls->fs;
  struct LHS_assign v;
  primaryexp(ls, &v.v);
  if (v.v.k == VCALL)  /* stat -> func */
    SETARG_C(getcode(fs, &v.v), 1);  /* call statement uses no results */
#if LUA_MUTATION_OPERATORS
  else {  /* stat -> compound | assignment */
    v.prev = NULL;
    switch(ls->t.token) {
      case TK_ADD_EQ:
      case TK_SUB_EQ:
      case TK_MUL_EQ:
      case TK_DIV_EQ:
      case TK_MOD_EQ:
      case TK_POW_EQ:
        compound(ls, &v);
        break;
      case ',':
      case '=':
        assignment(ls, &v, 1);
        break;
      default:
        luaX_syntaxerror(ls,
          luaO_pushfstring(ls->L,
                           "'+=','-=','*=', '/=', '%=', '^=', '=' expected"));
        break;
    }
#else
  else {  /* stat -> assignment */
    v.prev = NULL;
    assignment(ls, &v, 1);
#endif /* LUA_MUTATION_OPERATORS */
  }
}
开发者ID:henryfung01，项目名称:GameCode4，代码行数:40，代码来源:lparser.c


示例10: assignment

static void assignment (LexState *ls, struct LHS_assign *lh, int nvars) {
  expdesc e;
  check_condition(ls, VLOCAL <= lh->v.k && lh->v.k <= VINDEXED,
                      "syntax error");
  if (testnext(ls, ',')) {  /* assignment -> `,' primaryexp assignment */
    struct LHS_assign nv;
    nv.prev = lh;
    primaryexp(ls, &nv.v);
    if (nv.v.k == VLOCAL)
      check_conflict(ls, lh, &nv.v);
    luaY_checklimit(ls->fs, nvars, LUAI_MAXCCALLS - ls->L->nCcalls,
                    "variables in assignment");
    assignment(ls, &nv, nvars+1);
  }
  else {  /* assignment -> `=' explist1 */
    int nexps;
#if LUA_MUTATION_OPERATORS
    luaX_next(ls); /* consume `=' token. */
#else
    checknext(ls, '=');
#endif /* LUA_MUTATION_OPERATORS */
    nexps = explist1(ls, &e);
    if (nexps != nvars) {
      adjust_assign(ls, nvars, nexps, &e);
      if (nexps > nvars)
        ls->fs->freereg -= nexps - nvars;  /* remove extra values */
    }
    else {
      luaK_setoneret(ls->fs, &e);  /* close last expression */
      luaK_storevar(ls->fs, &lh->v, &e);
      return;  /* avoid default */
    }
  }
  init_exp(&e, VNONRELOC, ls->fs->freereg-1);  /* default assignment */
  luaK_storevar(ls->fs, &lh->v, &e);
}
开发者ID:henryfung01，项目名称:GameCode4，代码行数:36，代码来源:lparser.c


示例11: primaryexp

static void primaryexp (LexState *ls, expdesc *v) {
  /* primaryexp ->
        prefixexp { `.' NAME | `[' exp `]' | `:' NAME funcargs | funcargs } */
  FuncState *fs = ls->fs;
  prefixexp(ls, v);
  for (;;) {
    switch (ls->t.token) {
      case '.': {  /* field */
        field(ls, v);
        break;
      }
      case '[': {  /* `[' exp1 `]' */
        expdesc key;
        luaK_exp2anyreg(fs, v);
        yindex(ls, &key);
        luaK_indexed(fs, v, &key);
        break;
      }
      case ':': {  /* `:' NAME funcargs */
        expdesc key;
        luaX_next(ls);
        checkname(ls, &key);
        luaK_self(fs, v, &key);
        funcargs(ls, v);
        break;
      }
#if LUA_WIDESTRING
      case '(': case TK_STRING: case TK_WSTRING: case '{': {  /* funcargs */
#else
      case '(': case TK_STRING: case '{': {  /* funcargs */
#endif /* LUA_WIDESTRING */
        luaK_exp2nextreg(fs, v);
        funcargs(ls, v);
        break;
      }
      default: return;
    }
  }
}


static void simpleexp (LexState *ls, expdesc *v) {
#if LUA_WIDESTRING
  /* simpleexp -> NUMBER | STRING | WSTRING | NIL | true | false | ... |
                  constructor | FUNCTION body | primaryexp */
#else
  /* simpleexp -> NUMBER | STRING | NIL | true | false | ... |
                  constructor | FUNCTION body | primaryexp */
#endif /* LUA_WIDESTRING */
  switch (ls->t.token) {
    case TK_NUMBER: {
      init_exp(v, VKNUM, 0);
      v->u.nval = ls->t.seminfo.r;
      break;
    }
    case TK_STRING: {
      codestring(ls, v, ls->t.seminfo.ts);
      break;
    }
#if LUA_WIDESTRING
    case TK_WSTRING: {
      codewstring(ls, v, ls->t.seminfo.ts);
      break;
    }
#endif /* LUA_WIDESTRING */
    case TK_NIL: {
      init_exp(v, VNIL, 0);
      break;
    }
    case TK_TRUE: {
      init_exp(v, VTRUE, 0);
      break;
    }
    case TK_FALSE: {
      init_exp(v, VFALSE, 0);
      break;
    }
    case TK_DOTS: {  /* vararg */
      FuncState *fs = ls->fs;
      check_condition(ls, fs->f->is_vararg,
                      "cannot use " LUA_QL("...") " outside a vararg function");
      fs->f->is_vararg &= ~VARARG_NEEDSARG;  /* don't need 'arg' */
      init_exp(v, VVARARG, luaK_codeABC(fs, OP_VARARG, 0, 1, 0));
      break;
    }
    case '{': {  /* constructor */
      constructor(ls, v);
      return;
    }
    case TK_FUNCTION: {
      luaX_next(ls);
      body(ls, v, 0, ls->linenumber);
      return;
    }
    default: {
      primaryexp(ls, v);
      return;
    }
  }
  luaX_next(ls);
//.........这里部分代码省略.........
开发者ID:henryfung01，项目名称:GameCode4，代码行数:101，代码来源:lparser.c



注：本文中的primaryexp函数示例由纯净天空整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。

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