| /* |
| * [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.Test; |
| |
| import static org.junit.Assert.*; |
| |
| /** Test the set stuff in lexer and parser */ |
| public class TestSets extends BaseTest { |
| protected boolean debug = false; |
| |
| /** Public default constructor used by TestRig */ |
| public TestSets() { |
| } |
| |
| @Test public void testSeqDoesNotBecomeSet() throws Exception { |
| // this must return A not I to the parser; calling a nonfragment rule |
| // from a nonfragment rule does not set the overall token. |
| String grammar = |
| "grammar P;\n" + |
| "a : C {System.out.println(input);} ;\n" + |
| "fragment A : '1' | '2';\n" + |
| "fragment B : '3' '4';\n" + |
| "C : A | B;\n"; |
| String found = execParser("P.g", grammar, "PParser", "PLexer", |
| "a", "34", debug); |
| assertEquals("34\n", found); |
| } |
| |
| @Test public void testParserSet() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : t=('x'|'y') {System.out.println($t.text);} ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "x", debug); |
| assertEquals("x\n", found); |
| } |
| |
| @Test public void testParserNotSet() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : t=~('x'|'y') 'z' {System.out.println($t.text);} ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "zz", debug); |
| assertEquals("z\n", found); |
| } |
| |
| @Test public void testParserNotToken() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : ~'x' 'z' {System.out.println(input);} ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "zz", debug); |
| assertEquals("zz\n", found); |
| } |
| |
| @Test public void testParserNotTokenWithLabel() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : t=~'x' 'z' {System.out.println($t.text);} ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "zz", debug); |
| assertEquals("z\n", found); |
| } |
| |
| @Test public void testRuleAsSet() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a @after {System.out.println(input);} : 'a' | 'b' |'c' ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "b", debug); |
| assertEquals("b\n", found); |
| } |
| |
| @Test public void testRuleAsSetAST() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "options {output=AST;}\n" + |
| "a : 'a' | 'b' |'c' ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "b", debug); |
| assertEquals("b\n", found); |
| } |
| |
| @Test public void testNotChar() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : A {System.out.println($A.text);} ;\n" + |
| "A : ~'b' ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "x", debug); |
| assertEquals("x\n", found); |
| } |
| |
| @Test public void testOptionalSingleElement() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : A? 'c' {System.out.println(input);} ;\n" + |
| "A : 'b' ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "bc", debug); |
| assertEquals("bc\n", found); |
| } |
| |
| @Test public void testOptionalLexerSingleElement() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : A {System.out.println(input);} ;\n" + |
| "A : 'b'? 'c' ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "bc", debug); |
| assertEquals("bc\n", found); |
| } |
| |
| @Test public void testStarLexerSingleElement() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : A {System.out.println(input);} ;\n" + |
| "A : 'b'* 'c' ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "bbbbc", debug); |
| assertEquals("bbbbc\n", found); |
| found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "c", debug); |
| assertEquals("c\n", found); |
| } |
| |
| @Test public void testPlusLexerSingleElement() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : A {System.out.println(input);} ;\n" + |
| "A : 'b'+ 'c' ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "bbbbc", debug); |
| assertEquals("bbbbc\n", found); |
| } |
| |
| @Test public void testOptionalSet() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : ('a'|'b')? 'c' {System.out.println(input);} ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "ac", debug); |
| assertEquals("ac\n", found); |
| } |
| |
| @Test public void testStarSet() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : ('a'|'b')* 'c' {System.out.println(input);} ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "abaac", debug); |
| assertEquals("abaac\n", found); |
| } |
| |
| @Test public void testPlusSet() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : ('a'|'b')+ 'c' {System.out.println(input);} ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "abaac", debug); |
| assertEquals("abaac\n", found); |
| } |
| |
| @Test public void testLexerOptionalSet() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : A {System.out.println(input);} ;\n" + |
| "A : ('a'|'b')? 'c' ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "ac", debug); |
| assertEquals("ac\n", found); |
| } |
| |
| @Test public void testLexerStarSet() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : A {System.out.println(input);} ;\n" + |
| "A : ('a'|'b')* 'c' ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "abaac", debug); |
| assertEquals("abaac\n", found); |
| } |
| |
| @Test public void testLexerPlusSet() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : A {System.out.println(input);} ;\n" + |
| "A : ('a'|'b')+ 'c' ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "abaac", debug); |
| assertEquals("abaac\n", found); |
| } |
| |
| @Test public void testNotCharSet() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : A {System.out.println($A.text);} ;\n" + |
| "A : ~('b'|'c') ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "x", debug); |
| assertEquals("x\n", found); |
| } |
| |
| @Test public void testNotCharSetWithLabel() throws Exception { |
| // This doesn't work in lexer yet. |
| // Generates: h=input.LA(1); but h is defined as a Token |
| String grammar = |
| "grammar T;\n" + |
| "a : A {System.out.println($A.text);} ;\n" + |
| "A : h=~('b'|'c') ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "x", debug); |
| assertEquals("x\n", found); |
| } |
| |
| @Test public void testNotCharSetWithRuleRef() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : A {System.out.println($A.text);} ;\n" + |
| "A : ~('a'|B) ;\n" + |
| "B : 'b' ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "x", debug); |
| assertEquals("x\n", found); |
| } |
| |
| @Test public void testNotCharSetWithRuleRef2() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : A {System.out.println($A.text);} ;\n" + |
| "A : ~('a'|B) ;\n" + |
| "B : 'b'|'c' ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "x", debug); |
| assertEquals("x\n", found); |
| } |
| |
| @Test public void testNotCharSetWithRuleRef3() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : A {System.out.println($A.text);} ;\n" + |
| "A : ('a'|B) ;\n" + |
| "fragment\n" + |
| "B : ~('a'|'c') ;\n"; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "x", debug); |
| assertEquals("x\n", found); |
| } |
| |
| @Test public void testNotCharSetWithRuleRef4() throws Exception { |
| String grammar = |
| "grammar T;\n" + |
| "a : A {System.out.println($A.text);} ;\n" + |
| "A : ('a'|B) ;\n" + |
| "fragment\n" + |
| "B : ~('a'|C) ;\n" + |
| "fragment\n" + |
| "C : 'c'|'d' ;\n "; |
| String found = execParser("T.g", grammar, "TParser", "TLexer", |
| "a", "x", debug); |
| assertEquals("x\n", found); |
| } |
| |
| } |