Examples with CodePointCharStream org.antlr.v4.runtime.CodePointCharStream used on opensource projects

Example 6 with CodePointCharStream

use of org.antlr.v4.runtime.CodePointCharStream in project antlr4 by antlr.

the class TestCodePointCharStream method seekWithCJK.

@Test
public void seekWithCJK() {
    CodePointCharStream s = CharStreams.fromString("01234䂔6789");
    s.seek(5);
    assertEquals(0x4094, s.LA(1));
}

Example 7 with CodePointCharStream

use of org.antlr.v4.runtime.CodePointCharStream in project antlr4 by antlr.

the class TestCodePointCharStream method lookBehindWithEmoji.

@Test
public void lookBehindWithEmoji() {
    CodePointCharStream s = CharStreams.fromString(new StringBuilder("01234").appendCodePoint(0x1F522).append("6789").toString());
    s.seek(6);
    assertEquals(0x1F522, s.LA(-1));
}

Example 8 with CodePointCharStream

use of org.antlr.v4.runtime.CodePointCharStream in project antlr4 by antlr.

the class TestCodePointCharStream method consumingPastSingleCJKCodePointShouldThrow.

@Test
public void consumingPastSingleCJKCodePointShouldThrow() {
    CodePointCharStream s = CharStreams.fromString("愛");
    s.consume();
    thrown.expect(IllegalStateException.class);
    thrown.expectMessage("cannot consume EOF");
    s.consume();
}

Example 9 with CodePointCharStream

use of org.antlr.v4.runtime.CodePointCharStream in project antlr4 by antlr.

the class TestCodePointCharStream method lookAheadWithEmoji.

@Test
public void lookAheadWithEmoji() {
    CodePointCharStream s = CharStreams.fromString(new StringBuilder("01234").appendCodePoint(0x1F522).append("6789").toString());
    assertEquals(0x1F522, s.LA(6));
}

Example 10 with CodePointCharStream

use of org.antlr.v4.runtime.CodePointCharStream in project antlr4 by antlr.

the class TestCodePointCharStream method multipleLatinCodePointsLookAheadShouldReturnCodePoints.

@Test
public void multipleLatinCodePointsLookAheadShouldReturnCodePoints() {
    CodePointCharStream s = CharStreams.fromString("XYZ");
    assertEquals('X', s.LA(1));
    assertEquals(0, s.index());
    assertEquals('Y', s.LA(2));
    assertEquals(0, s.index());
    assertEquals('Z', s.LA(3));
    assertEquals(0, s.index());
}