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support for Prop <op>= exp

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This commit is contained in:
Kevin Glynn 2011-02-03 17:34:54 +01:00
parent 5e3dc6d5a0
commit 839a67bf19
2 changed files with 56 additions and 5 deletions
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60
CSharpTranslator/antlr3/src/cs2j/CSharp/NetMaker.g
View File

@ -330,6 +330,45 @@ scope SymTab {
}
return ret;
}
private Dictionary<int,int> _assOpMap = null;
protected Dictionary<int,int> AssOpMap {
get {
if (_assOpMap == null) {
_assOpMap = new Dictionary<int,int>();
// Initialize boxTypeMap (see JLS, ed 3 sec 5.1.7)
_assOpMap[PLUS_ASSIGN] = PLUS;
_assOpMap[MINUS_ASSIGN] = MINUS;
_assOpMap[STAR_ASSIGN] = STAR;
_assOpMap[DIV_ASSIGN] = DIV;
_assOpMap[MOD_ASSIGN] = MOD;
_assOpMap[BIT_AND_ASSIGN] = BIT_AND;
_assOpMap[BIT_OR_ASSIGN] = BIT_OR;
_assOpMap[BIT_XOR_ASSIGN] = BIT_XOR;
_assOpMap[LEFT_SHIFT_ASSIGN] = LEFT_SHIFT;
_assOpMap[RIGHT_SHIFT_ASSIGN] = RIGHT_SHIFT;
}
return _assOpMap;
}
}
// Converts <OP>= to <OP>
protected CommonTree mkOpExp(CommonTree assTok) {
CommonTree ret = assTok;
if (AssOpMap.ContainsKey(assTok.Token.Type)) {
ret = (CommonTree)adaptor.Create(AssOpMap[assTok.Token.Type], assTok.Token, assTok.Token.Text != null && assTok.Token.Text.EndsWith("=") ? assTok.Token.Text.Substring(0, assTok.Token.Text.Length - 1) : assTok.Token.Text);
}
return ret;
}
// make ^(op lhs rhs)
protected CommonTree mkOpExp(CommonTree opTok, CommonTree lhs, CommonTree rhs) {
CommonTree root = (CommonTree)adaptor.Nil;
root = (CommonTree)adaptor.BecomeRoot((CommonTree)adaptor.DupTree(opTok), root);
adaptor.AddChild(root, (CommonTree)adaptor.DupTree(lhs));
adaptor.AddChild(root, (CommonTree)adaptor.DupTree(rhs));
return root;
}
}
compilation_unit
@ -864,19 +903,29 @@ assignment
if (ret != null)
$assignment.tree = ret;
}:
((^('.' expression identifier generic_argument_list?) | identifier) '=') =>
(^('.' se=expression i=identifier generic_argument_list?) | i=identifier { isThis = true;}) a='=' rhs=expression
((^('.' expression identifier generic_argument_list?) | identifier) assignment_operator) =>
(^('.' se=expression i=identifier generic_argument_list?) | i=identifier { isThis = true;}) a=assignment_operator rhs=expression
{
TypeRepTemplate seType = (isThis ? SymTabLookup("this") : $se.dotNetType);
if (seType != null) {
ResolveResult fieldResult = seType.Resolve($i.thetext, AppEnv);
if (fieldResult != null && fieldResult.Result is PropRepTemplate) {
Debug($i.tree.Token.Line + ": Found '" + $i.thetext + "'");
CommonTree newRhsExp = $rhs.tree;
if ($a.tree.Token.Type != ASSIGN) {
// we have prop <op>= rhs
// need to translate to setProp(getProp <op> rhs)
Dictionary<string,CommonTree> rhsMap = new Dictionary<string,CommonTree>();
if (!isThis)
rhsMap["this"] = wrapExpression($se.tree, $i.tree.Token);
CommonTree rhsPropTree = mkJavaWrapper(((PropRepTemplate)fieldResult.Result).JavaGet, rhsMap, $a.tree.Token);
newRhsExp = mkOpExp(mkOpExp($a.tree), rhsPropTree, $rhs.tree);
}
Dictionary<string,CommonTree> valMap = new Dictionary<string,CommonTree>();
if (!isThis)
valMap["this"] = wrapExpression($se.tree, $i.tree.Token);
valMap["value"] = wrapExpression($rhs.tree, $i.tree.Token);
ret = mkJavaWrapper(((PropRepTemplate)fieldResult.Result).JavaSet, valMap, $a.token);
valMap["value"] = wrapExpression(newRhsExp, $i.tree.Token);
ret = mkJavaWrapper(((PropRepTemplate)fieldResult.Result).JavaSet, valMap, $a.tree.Token);
Imports.Add(fieldResult.Result.Imports);
}
}
@ -956,7 +1005,8 @@ cast_expression returns [TypeRepTemplate dotNetType]
// -> ^($c { ($type.dotNetType.IsUnboxedType && !$unary_expression.dotNetType.IsUnboxedType ? mkBoxedType($type.tree, $type.tree.Token) : $type.tree) } unary_expression)
;
assignment_operator:
'=' | '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' | '<<=' | '>' '>=' ;
'=' | shortcut_assignment_operator ;
shortcut_assignment_operator: '+=' | '-=' | '*=' | '/=' | '%=' | '&=' | '|=' | '^=' | '<<=' | '>' '>=' ;
//pre_increment_expression:
// '++' unary_expression ;
//pre_decrement_expression:

1
CSharpTranslator/antlr3/src/cs2j/CSharp/cs.g
View File

@ -113,6 +113,7 @@ tokens {
LONGNUMBER;
PLUS = '+';
MINUS = '-';
DIV = '/';