The Tor Browser: comparison layout/mathml/nsMathMLOperators.h

--1:000000000000
+:2a5fd936b200
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+* License, v. 2.0. If a copy of the MPL was not distributed with this
+* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#ifndef nsMathMLOperators_h___
+#define nsMathMLOperators_h___
+#include <stdint.h>
+#include "nsStringFwd.h"
+enum nsStretchDirection {
+NS_STRETCH_DIRECTION_UNSUPPORTED = -1,
+NS_STRETCH_DIRECTION_DEFAULT     =  0,
+NS_STRETCH_DIRECTION_HORIZONTAL  =  1,
+NS_STRETCH_DIRECTION_VERTICAL    =  2
+};
+typedef uint32_t nsOperatorFlags;
+enum {
+// define the bits used to handle the operator
+NS_MATHML_OPERATOR_MUTABLE            = 1<<30,
+NS_MATHML_OPERATOR_EMBELLISH_ANCESTOR = 1<<29,
+NS_MATHML_OPERATOR_EMBELLISH_ISOLATED = 1<<28,
+NS_MATHML_OPERATOR_CENTERED           = 1<<27,
+NS_MATHML_OPERATOR_INVISIBLE          = 1<<26,
+// define the bits used in the Operator Dictionary
+// the very last two bits tell us the form
+NS_MATHML_OPERATOR_FORM               = 0x3,
+NS_MATHML_OPERATOR_FORM_INFIX         = 1,
+NS_MATHML_OPERATOR_FORM_PREFIX        = 2,
+NS_MATHML_OPERATOR_FORM_POSTFIX       = 3,
+// the next 2 bits tell us the direction
+NS_MATHML_OPERATOR_DIRECTION            = 0x3<<2,
+NS_MATHML_OPERATOR_DIRECTION_HORIZONTAL = 1<<2,
+NS_MATHML_OPERATOR_DIRECTION_VERTICAL   = 2<<2,
+// other bits used in the Operator Dictionary
+NS_MATHML_OPERATOR_STRETCHY           = 1<<4,
+NS_MATHML_OPERATOR_FENCE              = 1<<5,
+NS_MATHML_OPERATOR_ACCENT             = 1<<6,
+NS_MATHML_OPERATOR_LARGEOP            = 1<<7,
+NS_MATHML_OPERATOR_SEPARATOR          = 1<<8,
+NS_MATHML_OPERATOR_MOVABLELIMITS      = 1<<9,
+NS_MATHML_OPERATOR_SYMMETRIC          = 1<<10,
+NS_MATHML_OPERATOR_INTEGRAL           = 1<<11,
+NS_MATHML_OPERATOR_MIRRORABLE         = 1<<12,
+// Additional bits not stored in the dictionary
+NS_MATHML_OPERATOR_MINSIZE_ABSOLUTE   = 1<<13,
+NS_MATHML_OPERATOR_MAXSIZE_ABSOLUTE   = 1<<14,
+NS_MATHML_OPERATOR_LSPACE_ATTR     = 1<<15,
+NS_MATHML_OPERATOR_RSPACE_ATTR    = 1<<16
+};
+#define NS_MATHML_OPERATOR_SIZE_INFINITY NS_IEEEPositiveInfinity()
+class nsMathMLOperators {
+public:
+static void AddRefTable(void);
+static void ReleaseTable(void);
+static void CleanUp();
+// LookupOperator:
+// Given the string value of an operator and its form (last two bits of flags),
+// this method returns true if the operator is found in the Operator Dictionary.
+// Attributes of the operator are returned in the output parameters.
+// If the operator is not found under the supplied form but is found under a
+// different form, the method returns true as well. The caller can test the
+// output parameter aFlags to know exactly under which form the operator was
+// found in the Operator Dictionary.
+static bool
+LookupOperator(const nsString&       aOperator,
+const nsOperatorFlags aForm,
+nsOperatorFlags*      aFlags,
+float*                aLeadingSpace,
+float*                aTrailingSpace);
+// LookupOperators:
+// Helper to return all the forms under which an operator is listed in the
+// Operator Dictionary. The caller must pass arrays of size 4, and use
+// aFlags[NS_MATHML_OPERATOR_FORM_{INFIX|POSTFIX|PREFIX}],
+// aLeadingSpace[], etc, to access the attributes of the operator under a
+// particular form. If the operator wasn't found under a form, its entry
+// aFlags[form] is set to zero.
+static void
+LookupOperators(const nsString&       aOperator,
+nsOperatorFlags*      aFlags,
+float*                aLeadingSpace,
+float*                aTrailingSpace);
+// Helper functions used by the nsMathMLChar class.
+static bool
+IsMirrorableOperator(const nsString& aOperator);
+// Helper function used by the nsMathMLChar class.
+static nsStretchDirection GetStretchyDirection(const nsString& aOperator);
+};
+////////////////////////////////////////////////////////////////////////////
+// Macros that retrieve the bits used to handle operators
+#define NS_MATHML_OPERATOR_IS_MUTABLE(_flags) \
+(NS_MATHML_OPERATOR_MUTABLE == ((_flags) & NS_MATHML_OPERATOR_MUTABLE))
+#define NS_MATHML_OPERATOR_HAS_EMBELLISH_ANCESTOR(_flags) \
+(NS_MATHML_OPERATOR_EMBELLISH_ANCESTOR == ((_flags) & NS_MATHML_OPERATOR_EMBELLISH_ANCESTOR))
+#define NS_MATHML_OPERATOR_EMBELLISH_IS_ISOLATED(_flags) \
+(NS_MATHML_OPERATOR_EMBELLISH_ISOLATED == ((_flags) & NS_MATHML_OPERATOR_EMBELLISH_ISOLATED))
+#define NS_MATHML_OPERATOR_IS_CENTERED(_flags) \
+(NS_MATHML_OPERATOR_CENTERED == ((_flags) & NS_MATHML_OPERATOR_CENTERED))
+#define NS_MATHML_OPERATOR_IS_INVISIBLE(_flags) \
+(NS_MATHML_OPERATOR_INVISIBLE == ((_flags) & NS_MATHML_OPERATOR_INVISIBLE))
+#define NS_MATHML_OPERATOR_GET_FORM(_flags) \
+((_flags) & NS_MATHML_OPERATOR_FORM)
+#define NS_MATHML_OPERATOR_GET_DIRECTION(_flags) \
+((_flags) & NS_MATHML_OPERATOR_DIRECTION)
+#define NS_MATHML_OPERATOR_FORM_IS_INFIX(_flags) \
+(NS_MATHML_OPERATOR_FORM_INFIX == ((_flags) & NS_MATHML_OPERATOR_FORM))
+#define NS_MATHML_OPERATOR_FORM_IS_PREFIX(_flags) \
+(NS_MATHML_OPERATOR_FORM_PREFIX == ((_flags) & NS_MATHML_OPERATOR_FORM))
+#define NS_MATHML_OPERATOR_FORM_IS_POSTFIX(_flags) \
+(NS_MATHML_OPERATOR_FORM_POSTFIX == ((_flags) & NS_MATHML_OPERATOR_FORM))
+#define NS_MATHML_OPERATOR_IS_DIRECTION_VERTICAL(_flags) \
+(NS_MATHML_OPERATOR_DIRECTION_VERTICAL == ((_flags) & NS_MATHML_OPERATOR_DIRECTION))
+#define NS_MATHML_OPERATOR_IS_DIRECTION_HORIZONTAL(_flags) \
+(NS_MATHML_OPERATOR_DIRECTION_HORIZONTAL == ((_flags) & NS_MATHML_OPERATOR_DIRECTION))
+#define NS_MATHML_OPERATOR_IS_STRETCHY(_flags) \
+(NS_MATHML_OPERATOR_STRETCHY == ((_flags) & NS_MATHML_OPERATOR_STRETCHY))
+#define NS_MATHML_OPERATOR_IS_FENCE(_flags) \
+(NS_MATHML_OPERATOR_FENCE == ((_flags) & NS_MATHML_OPERATOR_FENCE))
+#define NS_MATHML_OPERATOR_IS_ACCENT(_flags) \
+(NS_MATHML_OPERATOR_ACCENT == ((_flags) & NS_MATHML_OPERATOR_ACCENT))
+#define NS_MATHML_OPERATOR_IS_LARGEOP(_flags) \
+(NS_MATHML_OPERATOR_LARGEOP == ((_flags) & NS_MATHML_OPERATOR_LARGEOP))
+#define NS_MATHML_OPERATOR_IS_SEPARATOR(_flags) \
+(NS_MATHML_OPERATOR_SEPARATOR == ((_flags) & NS_MATHML_OPERATOR_SEPARATOR))
+#define NS_MATHML_OPERATOR_IS_MOVABLELIMITS(_flags) \
+(NS_MATHML_OPERATOR_MOVABLELIMITS == ((_flags) & NS_MATHML_OPERATOR_MOVABLELIMITS))
+#define NS_MATHML_OPERATOR_IS_SYMMETRIC(_flags) \
+(NS_MATHML_OPERATOR_SYMMETRIC == ((_flags) & NS_MATHML_OPERATOR_SYMMETRIC))
+#define NS_MATHML_OPERATOR_IS_INTEGRAL(_flags) \
+(NS_MATHML_OPERATOR_INTEGRAL == ((_flags) & NS_MATHML_OPERATOR_INTEGRAL))
+#define NS_MATHML_OPERATOR_IS_MIRRORABLE(_flags) \
+(NS_MATHML_OPERATOR_MIRRORABLE == ((_flags) & NS_MATHML_OPERATOR_MIRRORABLE))
+#define NS_MATHML_OPERATOR_MINSIZE_IS_ABSOLUTE(_flags) \
+(NS_MATHML_OPERATOR_MINSIZE_ABSOLUTE == ((_flags) & NS_MATHML_OPERATOR_MINSIZE_ABSOLUTE))
+#define NS_MATHML_OPERATOR_MAXSIZE_IS_ABSOLUTE(_flags) \
+(NS_MATHML_OPERATOR_MAXSIZE_ABSOLUTE == ((_flags) & NS_MATHML_OPERATOR_MAXSIZE_ABSOLUTE))
+#define NS_MATHML_OPERATOR_HAS_LSPACE_ATTR(_flags) \
+(NS_MATHML_OPERATOR_LSPACE_ATTR == ((_flags) & NS_MATHML_OPERATOR_LSPACE_ATTR))
+#define NS_MATHML_OPERATOR_HAS_RSPACE_ATTR(_flags) \
+(NS_MATHML_OPERATOR_RSPACE_ATTR == ((_flags) & NS_MATHML_OPERATOR_RSPACE_ATTR))
+#endif /* nsMathMLOperators_h___ */

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comparison: layout/mathml/nsMathMLOperators.h

layout/mathml/nsMathMLOperators.h