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Merge pull request #630 from sharwell/fix-571 

Remove ability to reference enclosing rule by name, in favor of $ctx
This commit is contained in:
Terence Parr 2014-06-16 16:38:40 -07:00
parent 91752af88d fab3a83107
commit 17128d6486
4 changed files with 8 additions and 17 deletions
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5
tool/src/org/antlr/v4/tool/Alternative.java
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@ -92,7 +92,6 @@ public class Alternative implements AttributeResolver {
if ( ruleRefs.get(x)!=null ) return true; // rule ref in this alt?
LabelElementPair anyLabelDef = getAnyLabelDef(x);
if ( anyLabelDef!=null && anyLabelDef.type==LabelType.RULE_LABEL ) return true;
if ( x.equals(rule.name) ) return true; // $r for action in rule r, $r is a dict
return false;
}
@ -108,9 +107,6 @@ public class Alternative implements AttributeResolver {
*/
@Override
public Attribute resolveToAttribute(String x, String y, ActionAST node) {
if ( rule.name.equals(x) ) { // x is this rule?
return rule.resolveToAttribute(x, y, node);
}
if ( tokenRefs.get(x)!=null ) { // token ref in this alt?
return rule.getPredefinedScope(LabelType.TOKEN_LABEL).get(y);
}
@ -162,7 +158,6 @@ public class Alternative implements AttributeResolver {
if ( anyLabelDef!=null && anyLabelDef.type==LabelType.RULE_LABEL ) {
return rule.g.getRule(anyLabelDef.element.getText());
}
if ( x.equals(rule.name) ) return rule;
return null;
}
}

4
tool/src/org/antlr/v4/tool/Rule.java
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@ -259,9 +259,6 @@ public class Rule implements AttributeResolver {
/** $x.y Attribute: x is surrounding rule, label ref (in any alts) */
@Override
public Attribute resolveToAttribute(String x, String y, ActionAST node) {
if ( this.name.equals(x) ) { // x is this rule?
return resolveToAttribute(y, node);
}
LabelElementPair anyLabelDef = getAnyLabelDef(x);
if ( anyLabelDef!=null ) {
if ( anyLabelDef.type==LabelType.RULE_LABEL ) {
@ -306,7 +303,6 @@ public class Rule implements AttributeResolver {
@Override
public boolean resolvesToAttributeDict(String x, ActionAST node) {
if ( resolvesToToken(x, node) ) return true;
if ( x.equals(name) ) return true; // $r for action in rule r, $r is a dict
return false;
}

14
tool/test/org/antlr/v4/test/TestActionTranslation.java
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@ -119,25 +119,25 @@ public class TestActionTranslation extends BaseTest {
}
@Test public void testArguments() throws Exception {
String action = "$x; $a.x";
String action = "$x; $ctx.x";
String expected = "_localctx.x; _localctx.x";
testActions(attributeTemplate, "inline", action, expected);
}
@Test public void testReturnValue() throws Exception {
String action = "$x; $a.x";
String expected = "_localctx.x; _localctx.x";
String action = "$y; $ctx.y";
String expected = "_localctx.y; _localctx.y";
testActions(attributeTemplate, "inline", action, expected);
}
@Test public void testReturnValueWithNumber() throws Exception {
String action = "$a.x1";
String action = "$ctx.x1";
String expected = "_localctx.x1";
testActions(attributeTemplate, "inline", action, expected);
}
@Test public void testReturnValuesCurrentRule() throws Exception {
String action = "$y; $a.y;";
String action = "$y; $ctx.y;";
String expected = "_localctx.y; _localctx.y;";
testActions(attributeTemplate, "inline", action, expected);
}
@ -167,11 +167,11 @@ public class TestActionTranslation extends BaseTest {
}
@Test public void testRefToTextAttributeForCurrentRule() throws Exception {
String action = "$a.text; $text";
String action = "$ctx.text; $text";
// this is the expected translation for all cases
String expected =
"_input.getText(_localctx.start, _input.LT(-1)); _input.getText(_localctx.start, _input.LT(-1))";
"_localctx.text; _input.getText(_localctx.start, _input.LT(-1))";
testActions(attributeTemplate, "init", action, expected);
testActions(attributeTemplate, "inline", action, expected);

2
tool/test/org/antlr/v4/test/TestAttributeChecks.java
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@ -78,7 +78,7 @@ public class TestAttributeChecks extends BaseTest {
"$x = $y", "",
"$y = $x", "",
"$y.b = 3;", "",
"$a.x = $a.y", "",
"$ctx.x = $ctx.y", "",
"$lab.e", "",
"$lab.text", "",
"$b.e", "",