68 public static final int NEEDS_SCOPE = 1 << 0;
69
70 /**
71 * Is this block tagged as terminal based on its contents
72 * (usually the last statement)
73 */
74 public static final int IS_TERMINAL = 1 << 2;
75
76 /**
77 * Is this block the eager global scope - i.e. the original program. This isn't true for the
78 * outermost level of recompiles
79 */
80 public static final int IS_GLOBAL_SCOPE = 1 << 3;
81
82 /**
83 * Is this block a synthetic one introduced by Parser?
84 */
85 public static final int IS_SYNTHETIC = 1 << 4;
86
87 /**
88 * Constructor
89 *
90 * @param token The first token of the block
91 * @param finish The index of the last character
92 * @param flags The flags of the block
93 * @param statements All statements in the block
94 */
95 public Block(final long token, final int finish, final int flags, final Statement... statements) {
96 super(token, finish);
97
98 this.statements = Arrays.asList(statements);
99 this.symbols = new LinkedHashMap<>();
100 this.entryLabel = new Label("block_entry");
101 this.breakLabel = new Label("block_break");
102 final int len = statements.length;
103 final int terminalFlags = len > 0 && statements[len - 1].hasTerminalFlags() ? IS_TERMINAL : 0;
104 this.flags = terminalFlags | flags;
105 this.conversion = null;
106 }
107
471 */
472 public boolean providesScopeCreator() {
473 return needsScope() && isSynthetic()
474 && (getLastStatement() instanceof ForNode)
475 && ((ForNode) getLastStatement()).needsScopeCreator();
476 }
477
478 @Override
479 public boolean isBreakableWithoutLabel() {
480 return false;
481 }
482
483 @Override
484 public List<Label> getLabels() {
485 return Collections.unmodifiableList(Arrays.asList(entryLabel, breakLabel));
486 }
487
488 @Override
489 public Node accept(final NodeVisitor<? extends LexicalContext> visitor) {
490 return Acceptor.accept(this, visitor);
491 }
492 }
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68 public static final int NEEDS_SCOPE = 1 << 0;
69
70 /**
71 * Is this block tagged as terminal based on its contents
72 * (usually the last statement)
73 */
74 public static final int IS_TERMINAL = 1 << 2;
75
76 /**
77 * Is this block the eager global scope - i.e. the original program. This isn't true for the
78 * outermost level of recompiles
79 */
80 public static final int IS_GLOBAL_SCOPE = 1 << 3;
81
82 /**
83 * Is this block a synthetic one introduced by Parser?
84 */
85 public static final int IS_SYNTHETIC = 1 << 4;
86
87 /**
88 * Is this the function body block? May not be the first, if parameter list contains expressions.
89 */
90 public static final int IS_BODY = 1 << 5;
91
92 /**
93 * Is this the parameter initialization block? If present, must be the first block, immediately wrapping the function body block.
94 */
95 public static final int IS_PARAMETER_BLOCK = 1 << 6;
96
97 /**
98 * Marks the variable declaration block for case clauses of a switch statement.
99 */
100 public static final int IS_SWITCH_BLOCK = 1 << 7;
101
102 /**
103 * Constructor
104 *
105 * @param token The first token of the block
106 * @param finish The index of the last character
107 * @param flags The flags of the block
108 * @param statements All statements in the block
109 */
110 public Block(final long token, final int finish, final int flags, final Statement... statements) {
111 super(token, finish);
112
113 this.statements = Arrays.asList(statements);
114 this.symbols = new LinkedHashMap<>();
115 this.entryLabel = new Label("block_entry");
116 this.breakLabel = new Label("block_break");
117 final int len = statements.length;
118 final int terminalFlags = len > 0 && statements[len - 1].hasTerminalFlags() ? IS_TERMINAL : 0;
119 this.flags = terminalFlags | flags;
120 this.conversion = null;
121 }
122
486 */
487 public boolean providesScopeCreator() {
488 return needsScope() && isSynthetic()
489 && (getLastStatement() instanceof ForNode)
490 && ((ForNode) getLastStatement()).needsScopeCreator();
491 }
492
493 @Override
494 public boolean isBreakableWithoutLabel() {
495 return false;
496 }
497
498 @Override
499 public List<Label> getLabels() {
500 return Collections.unmodifiableList(Arrays.asList(entryLabel, breakLabel));
501 }
502
503 @Override
504 public Node accept(final NodeVisitor<? extends LexicalContext> visitor) {
505 return Acceptor.accept(this, visitor);
506 }
507
508 /**
509 * Checks if this is a function body.
510 *
511 * @return true if the function body flag is set
512 */
513 public boolean isFunctionBody() {
514 return getFlag(IS_BODY);
515 }
516
517 /**
518 * Checks if this is a parameter block.
519 *
520 * @return true if the parameter block flag is set
521 */
522 public boolean isParameterBlock() {
523 return getFlag(IS_PARAMETER_BLOCK);
524 }
525
526 /**
527 * Checks whether this is a switch block.
528 *
529 * @return true if this is a switch block
530 */
531 public boolean isSwitchBlock() {
532 return getFlag(IS_SWITCH_BLOCK);
533 }
534 }
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