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Bug 563365 - nsMathMLOperators::LookupOperators retrieves only the first form found. r=karlt

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This commit is contained in:
Frederic Wang 2009-11-21 23:25:55 +01:00
parent c823399d44
commit 5a347b9ad5
1 changed files with 26 additions and 53 deletions
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79
layout/mathml/nsMathMLOperators.cpp
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@ -66,17 +66,6 @@ struct OperatorData {
float mRightSpace; // unit is em
};
/*
The MathML REC says:
"If the operator does not occur in the dictionary with the specified form,
the renderer should use one of the forms which is available there, in the
order of preference: infix, postfix, prefix."
The following variable will be used to keep track of all possible forms
encountered in the Operator Dictionary.
*/
static OperatorData* gOperatorFound[4];
static PRInt32 gTableRefCount = 0;
static PRInt32 gOperatorCount = 0;
static OperatorData* gOperatorArray = nsnull;
@ -415,6 +404,15 @@ nsMathMLOperators::ReleaseTable(void)
}
}
static OperatorData*
GetOperatorData(const nsString& aOperator, nsOperatorFlags aForm)
{
nsAutoString key(aOperator);
key.AppendInt(aForm);
nsStringKey hkey(key);
return (OperatorData*)gOperatorTable->Get(&hkey);
}
PRBool
nsMathMLOperators::LookupOperator(const nsString& aOperator,
const nsOperatorFlags aForm,
@ -427,44 +425,24 @@ nsMathMLOperators::LookupOperator(const nsString& aOperator,
}
if (gOperatorTable) {
NS_ASSERTION(aFlags && aLeftSpace && aRightSpace, "bad usage");
NS_ASSERTION(aForm>=0 && aForm<4, "*** invalid call ***");
NS_ASSERTION(aForm > 0 && aForm < 4, "*** invalid call ***");
// The MathML REC says:
// If the operator does not occur in the dictionary with the specified form,
// the renderer should use one of the forms which is available there, in the
// order of preference: infix, postfix, prefix.
OperatorData* found;
PRInt32 form = NS_MATHML_OPERATOR_GET_FORM(aForm);
gOperatorFound[NS_MATHML_OPERATOR_FORM_INFIX] = nsnull;
gOperatorFound[NS_MATHML_OPERATOR_FORM_POSTFIX] = nsnull;
gOperatorFound[NS_MATHML_OPERATOR_FORM_PREFIX] = nsnull;
nsAutoString key(aOperator);
key.AppendInt(form, 10);
nsStringKey hkey(key);
gOperatorFound[form] = found = (OperatorData*)gOperatorTable->Get(&hkey);
// If not found, check if the operator exists perhaps in a different form,
// in the order of preference: infix, postfix, prefix
if (!found) {
if (form != NS_MATHML_OPERATOR_FORM_INFIX) {
form = NS_MATHML_OPERATOR_FORM_INFIX;
key.Assign(aOperator);
key.AppendInt(form, 10);
nsStringKey hashkey(key);
gOperatorFound[form] = found = (OperatorData*)gOperatorTable->Get(&hashkey);
}
if (!found) {
if (form != NS_MATHML_OPERATOR_FORM_POSTFIX) {
form = NS_MATHML_OPERATOR_FORM_POSTFIX;
key.Assign(aOperator);
key.AppendInt(form, 10);
nsStringKey hashkey(key);
gOperatorFound[form] = found = (OperatorData*)gOperatorTable->Get(&hashkey);
}
if (!found) {
if (!(found = GetOperatorData(aOperator, form))) {
if (form == NS_MATHML_OPERATOR_FORM_INFIX ||
!(found =
GetOperatorData(aOperator, NS_MATHML_OPERATOR_FORM_INFIX))) {
if (form == NS_MATHML_OPERATOR_FORM_POSTFIX ||
!(found =
GetOperatorData(aOperator, NS_MATHML_OPERATOR_FORM_POSTFIX))) {
if (form != NS_MATHML_OPERATOR_FORM_PREFIX) {
form = NS_MATHML_OPERATOR_FORM_PREFIX;
key.Assign(aOperator);
key.AppendInt(form, 10);
nsStringKey hashkey(key);
gOperatorFound[form] = found = (OperatorData*)gOperatorTable->Get(&hashkey);
found = GetOperatorData(aOperator, NS_MATHML_OPERATOR_FORM_PREFIX);
}
}
}
@ -504,25 +482,20 @@ nsMathMLOperators::LookupOperators(const nsString& aOperator,
aRightSpace[NS_MATHML_OPERATOR_FORM_PREFIX] = 0.0f;
if (gOperatorTable) {
// a lookup with form=0 will put all the variants in gOperatorFound[]
float dummy;
nsOperatorFlags flags = 0;
LookupOperator(aOperator, /*form=*/0, &flags, &dummy, &dummy);
// if the operator was found, gOperatorFound contains all its variants
OperatorData* found;
found = gOperatorFound[NS_MATHML_OPERATOR_FORM_INFIX];
found = GetOperatorData(aOperator, NS_MATHML_OPERATOR_FORM_INFIX);
if (found) {
aFlags[NS_MATHML_OPERATOR_FORM_INFIX] = found->mFlags;
aLeftSpace[NS_MATHML_OPERATOR_FORM_INFIX] = found->mLeftSpace;
aRightSpace[NS_MATHML_OPERATOR_FORM_INFIX] = found->mRightSpace;
}
found = gOperatorFound[NS_MATHML_OPERATOR_FORM_POSTFIX];
found = GetOperatorData(aOperator, NS_MATHML_OPERATOR_FORM_POSTFIX);
if (found) {
aFlags[NS_MATHML_OPERATOR_FORM_POSTFIX] = found->mFlags;
aLeftSpace[NS_MATHML_OPERATOR_FORM_POSTFIX] = found->mLeftSpace;
aRightSpace[NS_MATHML_OPERATOR_FORM_POSTFIX] = found->mRightSpace;
}
found = gOperatorFound[NS_MATHML_OPERATOR_FORM_PREFIX];
found = GetOperatorData(aOperator, NS_MATHML_OPERATOR_FORM_PREFIX);
if (found) {
aFlags[NS_MATHML_OPERATOR_FORM_PREFIX] = found->mFlags;
aLeftSpace[NS_MATHML_OPERATOR_FORM_PREFIX] = found->mLeftSpace;