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本文整理匯總了Java中org.mozilla.javascript.ast.ScriptNode.getFirstChild方法的典型用法代碼示例。如果您正苦於以下問題：Java ScriptNode.getFirstChild方法的具體用法？Java ScriptNode.getFirstChild怎麽用？Java ScriptNode.getFirstChild使用的例子？那麽恭喜您, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在類org.mozilla.javascript.ast.ScriptNode的用法示例。
在下文中一共展示了ScriptNode.getFirstChild方法的4個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於我們的係統推薦出更棒的Java代碼示例。
示例1: CompiledExprFromTree
點讚 2
import org.mozilla.javascript.ast.ScriptNode; //導入方法依賴的package包/類
/**
* compile the expression from a script tree
*
* @param expression
* @param context
* @param tree
* @param columnExprList
* @throws BirtException
*/
private void CompiledExprFromTree( String expression, Context context,
ScriptNode tree, List columnExprList ) throws BirtException
{
if ( tree.getFirstChild( ) == tree.getLastChild( ) )
{
if ( tree.getFirstChild( ).getType( ) == Token.FUNCTION )
{
int index = getFunctionIndex( tree.getFirstChild( ).getString( ),
tree );
compileFunctionNode( tree.getFunctionNode( index ),
tree,
columnExprList );
}
else
{
// A single expression
if ( tree.getFirstChild( ).getType( ) != Token.EXPR_RESULT
&& tree.getFirstChild( ).getType( ) != Token.EXPR_VOID
&& tree.getFirstChild( ).getType( ) != Token.BLOCK
&& tree.getFirstChild( ).getType( ) != Token.SCRIPT)
{
// This should never happen?
throw new CoreException( pluginId,
ResourceConstants.INVALID_EXPRESSION );
}
Node exprNode = tree.getFirstChild( );
processChild( exprNode, tree, columnExprList );
}
}
else
{
compileComplexExpr( tree, tree, columnExprList );
}
}
開發者ID:eclipse，項目名稱:birt，代碼行數:44，
示例2: processScriptTree
點讚 2
import org.mozilla.javascript.ast.ScriptNode; //導入方法依賴的package包/類
/**
* process the script tree to produce a CompiledExpression
*
* @param expression
* @param tree
* @param context
* @return @throws
* DataException
*/
private CompiledExpression processScriptTree( String expression,
ScriptNode tree, Context context ) throws DataException
{
CompiledExpression expr;
if ( tree.getFirstChild( ) == tree.getLastChild( ) )
{
if( tree.getFirstChild( ) == null )
throw new DataException( "Expression parse error: first child is null. The expression is " + expression,
expression );
// A single expression
if ( tree.getFirstChild( ).getType( ) != Token.EXPR_RESULT
&& tree.getFirstChild( ).getType( ) != Token.EXPR_VOID
&& tree.getFirstChild( ).getType( ) != Token.BLOCK )
{
// This should never happen?
throw new DataException( ResourceConstants.INVALID_JS_EXPR,
expression );
}
Node child, parent = tree;
Node exprNode = parent.getFirstChild( );
child = exprNode.getFirstChild( );
if ( child.getNext( ) != null )
child = exprNode;
else
{
parent = exprNode;
}
assert ( child != null && parent != null );
expr = processChild( context, false, parent, child, tree );
}
else
{
// complex expressions
// Multiple expressions exist; we should produce complex expressions
// However, individual subexpressions still needs to be processed
// to identify the interesting subexpressions
expr = compileComplexExpr( context, tree, false );
}
if ( expr instanceof BytecodeExpression )
compileForBytecodeExpr( context, tree, expr );
return expr;
}
開發者ID:eclipse，項目名稱:birt，代碼行數:53，
示例3: isColumnExpression
點讚 2
import org.mozilla.javascript.ast.ScriptNode; //導入方法依賴的package包/類
/**
* whether the expression is column reference
* @param expression
* @return
*/
public static boolean isColumnExpression( String expression, boolean mode )
{
boolean isColumn = false;
if ( expression == null || expression.trim( ).length( ) == 0 )
return isColumn;
if ( getCompiledExpCacheMap( mode ).containsKey( expression ) )
{
return ( (Boolean) getCompiledExpCacheMap( mode ).get( expression ) ).booleanValue( );
}
Context context = Context.enter( );
ScriptNode tree;
try
{
CompilerEnvirons m_compilerEnv = new CompilerEnvirons( );
m_compilerEnv.initFromContext( context );
Parser p = new Parser( m_compilerEnv, context.getErrorReporter( ) );
AstRoot root = p.parse( expression, null, 0 );
IRFactory ir = new IRFactory( m_compilerEnv );
tree = ir.transformTree( root );
}
catch ( Exception e )
{
getCompiledExpCacheMap( mode ).put( expression,
Boolean.valueOf( false ) );
return false;
}
finally
{
Context.exit( );
}
if ( tree.getFirstChild( ) == tree.getLastChild( ) )
{
// A single expression
if ( tree.getFirstChild( ).getType( ) != Token.EXPR_RESULT
&& tree.getFirstChild( ).getType( ) != Token.EXPR_VOID
&& tree.getFirstChild( ).getType( ) != Token.BLOCK )
{
isColumn = false;
}
Node exprNode = tree.getFirstChild( );
Node child = exprNode.getFirstChild( );
assert ( child != null );
if ( child.getType( ) == Token.GETELEM
|| child.getType( ) == Token.GETPROP )
isColumn = getDirectColRefExpr( child, mode );
else
isColumn = false;
}
else
{
isColumn = false;
}
getCompiledExpCacheMap( mode ).put( expression,
Boolean.valueOf( isColumn ) );
return isColumn;
}
開發者ID:eclipse，項目名稱:birt，代碼行數:63，
示例4: isColumnExpression
點讚 2
import org.mozilla.javascript.ast.ScriptNode; //導入方法依賴的package包/類
/**
* whether the expression is column reference
*
* @param expression
* @return
*/
public static boolean isColumnExpression( String expression )
{
boolean isColumn = false;
if ( expression == null || expression.trim( ).length( ) == 0 )
return isColumn;
if ( compiledExprCache.containsKey( expression ) )
return ( (Boolean) compiledExprCache.get( expression ) ).booleanValue( );
Context context = Context.enter( );
ScriptNode tree;
try
{
CompilerEnvirons m_compilerEnv = new CompilerEnvirons( );
m_compilerEnv.initFromContext( context );
Parser p = new Parser( m_compilerEnv, context.getErrorReporter( ) );
AstRoot root = p.parse( expression, null, 0 );
IRFactory ir = new IRFactory( m_compilerEnv );
tree = ir.transformTree( root );
}
catch ( Exception e )
{
compiledExprCache.put( expression, Boolean.valueOf( false ) );
return false;
}
finally
{
Context.exit( );
}
if ( tree.getFirstChild( ) == tree.getLastChild( ) )
{
// A single expression
if ( tree.getFirstChild( ).getType( ) != Token.EXPR_RESULT
&& tree.getFirstChild( ).getType( ) != Token.EXPR_VOID
&& tree.getFirstChild( ).getType( ) != Token.BLOCK )
{
isColumn = false;
}
Node exprNode = tree.getFirstChild( );
Node child = exprNode.getFirstChild( );
assert ( child != null );
if ( child.getType( ) == Token.GETELEM
|| child.getType( ) == Token.GETPROP )
isColumn = getDirectColRefExpr( child );
else
isColumn = false;
}
else
{
isColumn = false;
}
compiledExprCache.put( expression, Boolean.valueOf( isColumn ) );
return isColumn;
}
開發者ID:eclipse，項目名稱:birt，代碼行數:61，
注：本文中的org.mozilla.javascript.ast.ScriptNode.getFirstChild方法示例整理自Github/MSDocs等源碼及文檔管理平台，相關代碼片段篩選自各路編程大神貢獻的開源項目，源碼版權歸原作者所有，傳播和使用請參考對應項目的License；未經允許，請勿轉載。