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+/*
+ * [The "BSD license"]
+ * Copyright (c) 2010 Terence Parr
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+package org.antlr.test;
+
+import org.junit.Ignore;
+import org.junit.Test;
+
+public class TestAutoAST extends BaseTest {
+ protected boolean debug = false;
+
+ @Test public void testTokenList() throws Exception {
+ String grammar =
+ "grammar foo;\n" +
+ "options {output=AST;}\n" +
+ "a : ID INT ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("foo.g", grammar, "fooParser", "fooLexer",
+ "a", "abc 34", debug);
+ assertEquals("abc 34\n", found);
+ }
+
+ @Test public void testTokenListInSingleAltBlock() throws Exception {
+ String grammar =
+ "grammar foo;\n" +
+ "options {output=AST;}\n" +
+ "a : (ID INT) ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("foo.g", grammar, "fooParser", "fooLexer",
+ "a", "abc 34", debug);
+ assertEquals("abc 34\n", found);
+ }
+
+ @Test public void testSimpleRootAtOuterLevel() throws Exception {
+ String grammar =
+ "grammar foo;\n" +
+ "options {output=AST;}\n" +
+ "a : ID^ INT ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("foo.g", grammar, "fooParser", "fooLexer",
+ "a", "abc 34", debug);
+ assertEquals("(abc 34)\n", found);
+ }
+
+ @Test public void testSimpleRootAtOuterLevelReverse() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : INT ID^ ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "34 abc", debug);
+ assertEquals("(abc 34)\n", found);
+ }
+
+ @Test public void testBang() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ID INT! ID! INT ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "abc 34 dag 4532", debug);
+ assertEquals("abc 4532\n", found);
+ }
+
+ @Test public void testOptionalThenRoot() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ( ID INT )? ID^ ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "a 1 b", debug);
+ assertEquals("(b a 1)\n", found);
+ }
+
+ @Test public void testLabeledStringRoot() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : v='void'^ ID ';' ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "void foo;", debug);
+ assertEquals("(void foo ;)\n", found);
+ }
+
+ @Test public void testWildcard() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : v='void'^ . ';' ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "void foo;", debug);
+ assertEquals("(void foo ;)\n", found);
+ }
+
+ @Test public void testWildcardRoot() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : v='void' .^ ';' ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "void foo;", debug);
+ assertEquals("(foo void ;)\n", found);
+ }
+
+ @Test public void testWildcardRootWithLabel() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : v='void' x=.^ ';' ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "void foo;", debug);
+ assertEquals("(foo void ;)\n", found);
+ }
+
+ @Test public void testWildcardRootWithListLabel() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : v='void' x=.^ ';' ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "void foo;", debug);
+ assertEquals("(foo void ;)\n", found);
+ }
+
+ @Test public void testWildcardBangWithListLabel() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : v='void' x=.! ';' ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "void foo;", debug);
+ assertEquals("void ;\n", found);
+ }
+
+ @Test public void testRootRoot() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ID^ INT^ ID ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "a 34 c", debug);
+ assertEquals("(34 a c)\n", found);
+ }
+
+ @Test public void testRootRoot2() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ID INT^ ID^ ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "a 34 c", debug);
+ assertEquals("(c (34 a))\n", found);
+ }
+
+ @Test public void testRootThenRootInLoop() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ID^ (INT '*'^ ID)+ ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "a 34 * b 9 * c", debug);
+ assertEquals("(* (* (a 34) b 9) c)\n", found);
+ }
+
+ @Test public void testNestedSubrule() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : 'void' (({;}ID|INT) ID | 'null' ) ';' ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "void a b;", debug);
+ assertEquals("void a b ;\n", found);
+ }
+
+ @Test public void testInvokeRule() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : type ID ;\n" +
+ "type : {;}'int' | 'float' ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "int a", debug);
+ assertEquals("int a\n", found);
+ }
+
+ @Test public void testInvokeRuleAsRoot() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : type^ ID ;\n" +
+ "type : {;}'int' | 'float' ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "int a", debug);
+ assertEquals("(int a)\n", found);
+ }
+
+ @Test public void testInvokeRuleAsRootWithLabel() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : x=type^ ID ;\n" +
+ "type : {;}'int' | 'float' ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "int a", debug);
+ assertEquals("(int a)\n", found);
+ }
+
+ @Test public void testInvokeRuleAsRootWithListLabel() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : x+=type^ ID ;\n" +
+ "type : {;}'int' | 'float' ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "int a", debug);
+ assertEquals("(int a)\n", found);
+ }
+
+ @Test public void testRuleRootInLoop() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ID ('+'^ ID)* ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "a+b+c+d", debug);
+ assertEquals("(+ (+ (+ a b) c) d)\n", found);
+ }
+
+ @Test public void testRuleInvocationRuleRootInLoop() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ID (op^ ID)* ;\n" +
+ "op : {;}'+' | '-' ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "a+b+c-d", debug);
+ assertEquals("(- (+ (+ a b) c) d)\n", found);
+ }
+
+ @Test public void testTailRecursion() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "s : a ;\n" +
+ "a : atom ('exp'^ a)? ;\n" +
+ "atom : INT ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "s", "3 exp 4 exp 5", debug);
+ assertEquals("(exp 3 (exp 4 5))\n", found);
+ }
+
+ @Test public void testSet() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ID|INT ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "abc", debug);
+ assertEquals("abc\n", found);
+ }
+
+ @Test public void testSetRoot() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ('+' | '-')^ ID ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "+abc", debug);
+ assertEquals("(+ abc)\n", found);
+ }
+
+ @Ignore
+ // TODO: FAILS until I rebuild the antlr.g in v3
+ //
+ public void testSetRootWithLabel() throws Exception {
+
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : x=('+' | '-')^ ID ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "+abc", debug);
+ assertEquals("(+ abc)\n", found);
+ }
+
+ @Test public void testSetAsRuleRootInLoop() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ID (('+'|'-')^ ID)* ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "a+b-c", debug);
+ assertEquals("(- (+ a b) c)\n", found);
+ }
+
+ @Test public void testNotSet() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ~ID '+' INT ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "34+2", debug);
+ assertEquals("34 + 2\n", found);
+ }
+
+ @Test public void testNotSetWithLabel() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : x=~ID '+' INT ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "34+2", debug);
+ assertEquals("34 + 2\n", found);
+ }
+
+ @Test public void testNotSetWithListLabel() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : x=~ID '+' INT ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "34+2", debug);
+ assertEquals("34 + 2\n", found);
+ }
+
+ @Test public void testNotSetRoot() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ~'+'^ INT ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "34 55", debug);
+ assertEquals("(34 55)\n", found);
+ }
+
+ @Test public void testNotSetRootWithLabel() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ~'+'^ INT ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "34 55", debug);
+ assertEquals("(34 55)\n", found);
+ }
+
+ @Test public void testNotSetRootWithListLabel() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ~'+'^ INT ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "34 55", debug);
+ assertEquals("(34 55)\n", found);
+ }
+
+ @Test public void testNotSetRuleRootInLoop() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : INT (~INT^ INT)* ;\n" +
+ "blort : '+' ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "3+4+5", debug);
+ assertEquals("(+ (+ 3 4) 5)\n", found);
+ }
+
+ @Test public void testTokenLabelReuse() throws Exception {
+ // check for compilation problem due to multiple defines
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : id=ID id=ID {System.out.print(\"2nd id=\"+$id.text+';');} ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "a b", debug);
+ assertEquals("2nd id=b;a b\n", found);
+ }
+
+ @Test public void testTokenLabelReuse2() throws Exception {
+ // check for compilation problem due to multiple defines
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : id=ID id=ID^ {System.out.print(\"2nd id=\"+$id.text+';');} ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "a b", debug);
+ assertEquals("2nd id=b;(b a)\n", found);
+ }
+
+ @Test public void testTokenListLabelReuse() throws Exception {
+ // check for compilation problem due to multiple defines
+ // make sure ids has both ID tokens
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ids+=ID ids+=ID {System.out.print(\"id list=\"+$ids+';');} ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "a b", debug);
+ String expecting = "id list=[[@0,0:0='a',<4>,1:0], [@2,2:2='b',<4>,1:2]];a b\n";
+ assertEquals(expecting, found);
+ }
+
+ @Test public void testTokenListLabelReuse2() throws Exception {
+ // check for compilation problem due to multiple defines
+ // make sure ids has both ID tokens
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ids+=ID^ ids+=ID {System.out.print(\"id list=\"+$ids+';');} ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "a b", debug);
+ String expecting = "id list=[[@0,0:0='a',<4>,1:0], [@2,2:2='b',<4>,1:2]];(a b)\n";
+ assertEquals(expecting, found);
+ }
+
+ @Test public void testTokenListLabelRuleRoot() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : id+=ID^ ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "a", debug);
+ assertEquals("a\n", found);
+ }
+
+ @Test public void testTokenListLabelBang() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : id+=ID! ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "a", debug);
+ assertEquals("", found);
+ }
+
+ @Test public void testRuleListLabel() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : x+=b x+=b {" +
+ "Tree t=(Tree)$x.get(1);" +
+ "System.out.print(\"2nd x=\"+t.toStringTree()+';');} ;\n" +
+ "b : ID;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "a b", debug);
+ assertEquals("2nd x=b;a b\n", found);
+ }
+
+ @Test public void testRuleListLabelRuleRoot() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ( x+=b^ )+ {" +
+ "System.out.print(\"x=\"+((CommonTree)$x.get(1)).toStringTree()+';');} ;\n" +
+ "b : ID;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "a b", debug);
+ assertEquals("x=(b a);(b a)\n", found);
+ }
+
+ @Test public void testRuleListLabelBang() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : x+=b! x+=b {" +
+ "System.out.print(\"1st x=\"+((CommonTree)$x.get(0)).toStringTree()+';');} ;\n" +
+ "b : ID;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "a b", debug);
+ assertEquals("1st x=a;b\n", found);
+ }
+
+ @Test public void testComplicatedMelange() throws Exception {
+ // check for compilation problem
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : A b=B b=B c+=C c+=C D {String s = $D.text;} ;\n" +
+ "A : 'a' ;\n" +
+ "B : 'b' ;\n" +
+ "C : 'c' ;\n" +
+ "D : 'd' ;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "a", "a b b c c d", debug);
+ assertEquals("a b b c c d\n", found);
+ }
+
+ @Test public void testReturnValueWithAST() throws Exception {
+ String grammar =
+ "grammar foo;\n" +
+ "options {output=AST;}\n" +
+ "a : ID b {System.out.println($b.i);} ;\n" +
+ "b returns [int i] : INT {$i=Integer.parseInt($INT.text);} ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("foo.g", grammar, "fooParser", "fooLexer",
+ "a", "abc 34", debug);
+ assertEquals("34\nabc 34\n", found);
+ }
+
+ @Test public void testSetLoop() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options { output=AST; }\n" +
+ "r : (INT|ID)+ ; \n" +
+ "ID : 'a'..'z' + ;\n" +
+ "INT : '0'..'9' +;\n" +
+ "WS: (' ' | '\\n' | '\\t')+ {$channel = HIDDEN;};\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer",
+ "r", "abc 34 d", debug);
+ assertEquals("abc 34 d\n", found);
+ }
+
+ @Test public void testExtraTokenInSimpleDecl() throws Exception {
+ String grammar =
+ "grammar foo;\n" +
+ "options {output=AST;}\n" +
+ "decl : type^ ID '='! INT ';'! ;\n" +
+ "type : 'int' | 'float' ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("foo.g", grammar, "fooParser", "fooLexer",
+ "decl", "int 34 x=1;", debug);
+ assertEquals("line 1:4 extraneous input '34' expecting ID\n", this.stderrDuringParse);
+ assertEquals("(int x 1)\n", found); // tree gets correct x and 1 tokens
+ }
+
+ @Test public void testMissingIDInSimpleDecl() throws Exception {
+ String grammar =
+ "grammar foo;\n" +
+ "options {output=AST;}\n" +
+ "tokens {EXPR;}\n" +
+ "decl : type^ ID '='! INT ';'! ;\n" +
+ "type : 'int' | 'float' ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("foo.g", grammar, "fooParser", "fooLexer",
+ "decl", "int =1;", debug);
+ assertEquals("line 1:4 missing ID at '='\n", this.stderrDuringParse);
+ assertEquals("(int <missing ID> 1)\n", found); // tree gets invented ID token
+ }
+
+ @Test public void testMissingSetInSimpleDecl() throws Exception {
+ String grammar =
+ "grammar foo;\n" +
+ "options {output=AST;}\n" +
+ "tokens {EXPR;}\n" +
+ "decl : type^ ID '='! INT ';'! ;\n" +
+ "type : 'int' | 'float' ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("foo.g", grammar, "fooParser", "fooLexer",
+ "decl", "x=1;", debug);
+ assertEquals("line 1:0 mismatched input 'x' expecting set null\n", this.stderrDuringParse);
+ assertEquals("(<error: x> x 1)\n", found); // tree gets invented ID token
+ }
+
+ @Test public void testMissingTokenGivesErrorNode() throws Exception {
+ String grammar =
+ "grammar foo;\n" +
+ "options {output=AST;}\n" +
+ "a : ID INT ;\n" + // follow is EOF
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("foo.g", grammar, "fooParser", "fooLexer",
+ "a", "abc", debug);
+ assertEquals("line 1:3 missing INT at '<EOF>'\n", this.stderrDuringParse);
+ assertEquals("abc <missing INT>\n", found);
+ }
+
+ @Test public void testMissingTokenGivesErrorNodeInInvokedRule() throws Exception {
+ String grammar =
+ "grammar foo;\n" +
+ "options {output=AST;}\n" +
+ "a : b ;\n" +
+ "b : ID INT ;\n" + // follow should see EOF
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("foo.g", grammar, "fooParser", "fooLexer",
+ "a", "abc", debug);
+ assertEquals("line 1:3 mismatched input '<EOF>' expecting INT\n", this.stderrDuringParse);
+ assertEquals("<mismatched token: [@1,3:3='<EOF>',<-1>,1:3], resync=abc>\n", found);
+ }
+
+ @Test public void testExtraTokenGivesErrorNode() throws Exception {
+ String grammar =
+ "grammar foo;\n" +
+ "options {output=AST;}\n" +
+ "a : b c ;\n" +
+ "b : ID ;\n" +
+ "c : INT ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("foo.g", grammar, "fooParser", "fooLexer",
+ "a", "abc ick 34", debug);
+ assertEquals("line 1:4 extraneous input 'ick' expecting INT\n", this.stderrDuringParse);
+ assertEquals("abc 34\n", found);
+ }
+
+ @Test public void testMissingFirstTokenGivesErrorNode() throws Exception {
+ String grammar =
+ "grammar foo;\n" +
+ "options {output=AST;}\n" +
+ "a : ID INT ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("foo.g", grammar, "fooParser", "fooLexer",
+ "a", "34", debug);
+ assertEquals("line 1:0 missing ID at '34'\n", this.stderrDuringParse);
+ assertEquals("<missing ID> 34\n", found);
+ }
+
+ @Test public void testMissingFirstTokenGivesErrorNode2() throws Exception {
+ String grammar =
+ "grammar foo;\n" +
+ "options {output=AST;}\n" +
+ "a : b c ;\n" +
+ "b : ID ;\n" +
+ "c : INT ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("foo.g", grammar, "fooParser", "fooLexer",
+ "a", "34", debug);
+ // finds an error at the first token, 34, and re-syncs.
+ // re-synchronizing does not consume a token because 34 follows
+ // ref to rule b (start of c). It then matches 34 in c.
+ assertEquals("line 1:0 missing ID at '34'\n", this.stderrDuringParse);
+ assertEquals("<missing ID> 34\n", found);
+ }
+
+ @Test public void testNoViableAltGivesErrorNode() throws Exception {
+ String grammar =
+ "grammar foo;\n" +
+ "options {output=AST;}\n" +
+ "a : b | c ;\n" +
+ "b : ID ;\n" +
+ "c : INT ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "S : '*' ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("foo.g", grammar, "fooParser", "fooLexer",
+ "a", "*", debug);
+ assertEquals("line 1:0 no viable alternative at input '*'\n", this.stderrDuringParse);
+ assertEquals("<unexpected: [@0,0:0='*',<6>,1:0], resync=*>\n", found);
+ }
+
+
+ // S U P P O R T
+
+ public void _test() throws Exception {
+ String grammar =
+ "grammar T;\n" +
+ "options {output=AST;}\n" +
+ "a : ;\n" +
+ "ID : 'a'..'z'+ ;\n" +
+ "INT : '0'..'9'+;\n" +
+ "WS : (' '|'\\n') {$channel=HIDDEN;} ;\n";
+ String found = execParser("T.g", grammar, "TParser", "TLexer", "a", "abc 34", debug);
+ assertEquals("\n", found);
+ }
+
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-04 20:13:53 +0000