grammar.y

linux下开源浏览器WebKit的源码,市面上的很多商用浏览器都是移植自WebKit

RelationalExprNoBF:
    ShiftExprNoBF
  | RelationalExprNoBF '<' ShiftExpr    { $$ = createNodeInfo<ExpressionNode*>(new LessNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
  | RelationalExprNoBF '>' ShiftExpr    { $$ = createNodeInfo<ExpressionNode*>(new GreaterNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
  | RelationalExprNoBF LE ShiftExpr     { $$ = createNodeInfo<ExpressionNode*>(new LessEqNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
  | RelationalExprNoBF GE ShiftExpr     { $$ = createNodeInfo<ExpressionNode*>(new GreaterEqNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
  | RelationalExprNoBF INSTANCEOF ShiftExpr
                                        { InstanceOfNode* node = new InstanceOfNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature);
                                          SET_EXCEPTION_LOCATION(node, @1.first_column, @3.first_column, @3.last_column);  
                                          $$ = createNodeInfo<ExpressionNode*>(node, $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
  | RelationalExprNoBF INTOKEN ShiftExpr 
                                        { InNode* node = new InNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature);
                                          SET_EXCEPTION_LOCATION(node, @1.first_column, @3.first_column, @3.last_column);  
                                          $$ = createNodeInfo<ExpressionNode*>(node, $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

EqualityExpr:
    RelationalExpr
  | EqualityExpr EQEQ RelationalExpr    { $$ = createNodeInfo<ExpressionNode*>(new EqualNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
  | EqualityExpr NE RelationalExpr      { $$ = createNodeInfo<ExpressionNode*>(new NotEqualNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
  | EqualityExpr STREQ RelationalExpr   { $$ = createNodeInfo<ExpressionNode*>(new StrictEqualNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
  | EqualityExpr STRNEQ RelationalExpr  { $$ = createNodeInfo<ExpressionNode*>(new NotStrictEqualNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

EqualityExprNoIn:
    RelationalExprNoIn
  | EqualityExprNoIn EQEQ RelationalExprNoIn
                                        { $$ = createNodeInfo<ExpressionNode*>(new EqualNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
  | EqualityExprNoIn NE RelationalExprNoIn
                                        { $$ = createNodeInfo<ExpressionNode*>(new NotEqualNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
  | EqualityExprNoIn STREQ RelationalExprNoIn
                                        { $$ = createNodeInfo<ExpressionNode*>(new StrictEqualNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
  | EqualityExprNoIn STRNEQ RelationalExprNoIn
                                        { $$ = createNodeInfo<ExpressionNode*>(new NotStrictEqualNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

EqualityExprNoBF:
    RelationalExprNoBF
  | EqualityExprNoBF EQEQ RelationalExpr
                                        { $$ = createNodeInfo<ExpressionNode*>(new EqualNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
  | EqualityExprNoBF NE RelationalExpr  { $$ = createNodeInfo<ExpressionNode*>(new NotEqualNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
  | EqualityExprNoBF STREQ RelationalExpr
                                        { $$ = createNodeInfo<ExpressionNode*>(new StrictEqualNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
  | EqualityExprNoBF STRNEQ RelationalExpr
                                        { $$ = createNodeInfo<ExpressionNode*>(new NotStrictEqualNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

BitwiseANDExpr:
    EqualityExpr
  | BitwiseANDExpr '&' EqualityExpr     { $$ = createNodeInfo<ExpressionNode*>(new BitAndNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

BitwiseANDExprNoIn:
    EqualityExprNoIn
  | BitwiseANDExprNoIn '&' EqualityExprNoIn
                                        { $$ = createNodeInfo<ExpressionNode*>(new BitAndNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

BitwiseANDExprNoBF:
    EqualityExprNoBF
  | BitwiseANDExprNoBF '&' EqualityExpr { $$ = createNodeInfo<ExpressionNode*>(new BitAndNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

BitwiseXORExpr:
    BitwiseANDExpr
  | BitwiseXORExpr '^' BitwiseANDExpr   { $$ = createNodeInfo<ExpressionNode*>(new BitXOrNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

BitwiseXORExprNoIn:
    BitwiseANDExprNoIn
  | BitwiseXORExprNoIn '^' BitwiseANDExprNoIn
                                        { $$ = createNodeInfo<ExpressionNode*>(new BitXOrNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

BitwiseXORExprNoBF:
    BitwiseANDExprNoBF
  | BitwiseXORExprNoBF '^' BitwiseANDExpr
                                        { $$ = createNodeInfo<ExpressionNode*>(new BitXOrNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

BitwiseORExpr:
    BitwiseXORExpr
  | BitwiseORExpr '|' BitwiseXORExpr    { $$ = createNodeInfo<ExpressionNode*>(new BitOrNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

BitwiseORExprNoIn:
    BitwiseXORExprNoIn
  | BitwiseORExprNoIn '|' BitwiseXORExprNoIn
                                        { $$ = createNodeInfo<ExpressionNode*>(new BitOrNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

BitwiseORExprNoBF:
    BitwiseXORExprNoBF
  | BitwiseORExprNoBF '|' BitwiseXORExpr
                                        { $$ = createNodeInfo<ExpressionNode*>(new BitOrNode(GLOBAL_DATA, $1.m_node, $3.m_node, $3.m_features & AssignFeature), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

LogicalANDExpr:
    BitwiseORExpr
  | LogicalANDExpr AND BitwiseORExpr    { $$ = createNodeInfo<ExpressionNode*>(new LogicalOpNode(GLOBAL_DATA, $1.m_node, $3.m_node, OpLogicalAnd), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

LogicalANDExprNoIn:
    BitwiseORExprNoIn
  | LogicalANDExprNoIn AND BitwiseORExprNoIn
                                        { $$ = createNodeInfo<ExpressionNode*>(new LogicalOpNode(GLOBAL_DATA, $1.m_node, $3.m_node, OpLogicalAnd), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

LogicalANDExprNoBF:
    BitwiseORExprNoBF
  | LogicalANDExprNoBF AND BitwiseORExpr
                                        { $$ = createNodeInfo<ExpressionNode*>(new LogicalOpNode(GLOBAL_DATA, $1.m_node, $3.m_node, OpLogicalAnd), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

LogicalORExpr:
    LogicalANDExpr
  | LogicalORExpr OR LogicalANDExpr     { $$ = createNodeInfo<ExpressionNode*>(new LogicalOpNode(GLOBAL_DATA, $1.m_node, $3.m_node, OpLogicalOr), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

LogicalORExprNoIn:
    LogicalANDExprNoIn
  | LogicalORExprNoIn OR LogicalANDExprNoIn
                                        { $$ = createNodeInfo<ExpressionNode*>(new LogicalOpNode(GLOBAL_DATA, $1.m_node, $3.m_node, OpLogicalOr), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

LogicalORExprNoBF:
    LogicalANDExprNoBF
  | LogicalORExprNoBF OR LogicalANDExpr { $$ = createNodeInfo<ExpressionNode*>(new LogicalOpNode(GLOBAL_DATA, $1.m_node, $3.m_node, OpLogicalOr), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

ConditionalExpr:
    LogicalORExpr
  | LogicalORExpr '?' AssignmentExpr ':' AssignmentExpr
                                        { $$ = createNodeInfo<ExpressionNode*>(new ConditionalNode(GLOBAL_DATA, $1.m_node, $3.m_node, $5.m_node), $1.m_features | $3.m_features | $5.m_features, $1.m_numConstants + $3.m_numConstants + $5.m_numConstants); }
;

ConditionalExprNoIn:
    LogicalORExprNoIn
  | LogicalORExprNoIn '?' AssignmentExprNoIn ':' AssignmentExprNoIn
                                        { $$ = createNodeInfo<ExpressionNode*>(new ConditionalNode(GLOBAL_DATA, $1.m_node, $3.m_node, $5.m_node), $1.m_features | $3.m_features | $5.m_features, $1.m_numConstants + $3.m_numConstants + $5.m_numConstants); }
;

ConditionalExprNoBF:
    LogicalORExprNoBF
  | LogicalORExprNoBF '?' AssignmentExpr ':' AssignmentExpr
                                        { $$ = createNodeInfo<ExpressionNode*>(new ConditionalNode(GLOBAL_DATA, $1.m_node, $3.m_node, $5.m_node), $1.m_features | $3.m_features | $5.m_features, $1.m_numConstants + $3.m_numConstants + $5.m_numConstants); }
;

AssignmentExpr:
    ConditionalExpr
  | LeftHandSideExpr AssignmentOperator AssignmentExpr
                                        { $$ = createNodeInfo<ExpressionNode*>(makeAssignNode(GLOBAL_DATA, $1.m_node, $2, $3.m_node, $1.m_features & AssignFeature, $3.m_features & AssignFeature, 
                                                                                                     @1.first_column, @2.first_column + 1, @3.last_column), $1.m_features | $3.m_features | AssignFeature, $1.m_numConstants + $3.m_numConstants); 
                                        }
;

AssignmentExprNoIn:
    ConditionalExprNoIn
  | LeftHandSideExpr AssignmentOperator AssignmentExprNoIn
                                        { $$ = createNodeInfo<ExpressionNode*>(makeAssignNode(GLOBAL_DATA, $1.m_node, $2, $3.m_node, $1.m_features & AssignFeature, $3.m_features & AssignFeature, 
                                                                                                     @1.first_column, @2.first_column + 1, @3.last_column), $1.m_features | $3.m_features | AssignFeature, $1.m_numConstants + $3.m_numConstants);
                                        }
;

AssignmentExprNoBF:
    ConditionalExprNoBF
  | LeftHandSideExprNoBF AssignmentOperator AssignmentExpr
                                        { $$ = createNodeInfo<ExpressionNode*>(makeAssignNode(GLOBAL_DATA, $1.m_node, $2, $3.m_node, $1.m_features & AssignFeature, $3.m_features & AssignFeature,
                                                                                                     @1.first_column, @2.first_column + 1, @3.last_column), $1.m_features | $3.m_features | AssignFeature, $1.m_numConstants + $3.m_numConstants); 
                                        }
;

AssignmentOperator:
    '='                                 { $$ = OpEqual; }
  | PLUSEQUAL                           { $$ = OpPlusEq; }
  | MINUSEQUAL                          { $$ = OpMinusEq; }
  | MULTEQUAL                           { $$ = OpMultEq; }
  | DIVEQUAL                            { $$ = OpDivEq; }
  | LSHIFTEQUAL                         { $$ = OpLShift; }
  | RSHIFTEQUAL                         { $$ = OpRShift; }
  | URSHIFTEQUAL                        { $$ = OpURShift; }
  | ANDEQUAL                            { $$ = OpAndEq; }
  | XOREQUAL                            { $$ = OpXOrEq; }
  | OREQUAL                             { $$ = OpOrEq; }
  | MODEQUAL                            { $$ = OpModEq; }
;

Expr:
    AssignmentExpr
  | Expr ',' AssignmentExpr             { $$ = createNodeInfo<ExpressionNode*>(new CommaNode(GLOBAL_DATA, $1.m_node, $3.m_node), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;

ExprNoIn:
    AssignmentExprNoIn
  | ExprNoIn ',' AssignmentExprNoIn     { $$ = createNodeInfo<ExpressionNode*>(new CommaNode(GLOBAL_DATA, $1.m_node, $3.m_node), $1.m_features | $3.m_features, $1.m_numConstants + $3.m_numConstants); }
;