mirror of
https://github.com/antlr/grammars-v4.git
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9fb4b99b4e
* Working version of bcpl grammar. Note, this grammar is very slow, requires a non-standard test driver, and is CSharp specific. * Clean up grammar. Remove useless parser symbols. Use assop rule. * Remove Antlr anti-pattern. Remove Antlr anti-pattern. * Removed useless parentheses. Removed parentheses that are unnecessary. * Split of the grammar. * Add lexer base class. * Changes to hide ChannelsCommonTokenStream. * Clean up. * Ported bcpl grammar to Java target. * Fixed semantics check for newlines. The lookahead must be screened for either default or the channel given when asking for lookahead or lookback.
22 lines
677 B
Java
22 lines
677 B
Java
import org.antlr.v4.runtime.*;
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public abstract class bcplParserBase extends Parser {
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public bcplParserBase(TokenStream input){
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super(new ChannelCommonTokenStream(input));
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}
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public boolean IsNl()
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{
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Token c = ((ChannelCommonTokenStream)this.getInputStream()).LT(-1, 2);
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Token d = ((ChannelCommonTokenStream)this.getInputStream()).LT(1, 2);
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return c.getType() == bcplParser.NL;
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}
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public boolean IsNotNl()
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{
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Token c = ((ChannelCommonTokenStream)this.getInputStream()).LT(-1, 2);
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Token d = ((ChannelCommonTokenStream)this.getInputStream()).LT(1, 2);
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return d.getType() != bcplParser.NL;
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}
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}
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