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eo-parser/src/main/java/org/eolang/parser/errors/EoParserErrors.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,12 +1,160 @@ | ||
| /* | ||
| * The MIT License (MIT) | ||
| * | ||
| * Copyright (c) 2016-2024 Objectionary.com | ||
| * | ||
| * Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| * of this software and associated documentation files (the "Software"), to deal | ||
| * in the Software without restriction, including without limitation the rights | ||
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| * copies of the Software, and to permit persons to whom the Software is | ||
| * furnished to do so, subject to the following conditions: | ||
| * | ||
| * The above copyright notice and this permission notice shall be included | ||
| * in all copies or substantial portions of the Software. | ||
| * | ||
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE | ||
| * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| * SOFTWARE. | ||
| */ | ||
| package org.eolang.parser.errors; | ||
|
|
||
| import java.util.ArrayList; | ||
| import java.util.Iterator; | ||
| import java.util.List; | ||
| import java.util.Objects; | ||
| import org.antlr.v4.runtime.BaseErrorListener; | ||
| import org.antlr.v4.runtime.InputMismatchException; | ||
| import org.antlr.v4.runtime.NoViableAltException; | ||
| import org.antlr.v4.runtime.Parser; | ||
| import org.antlr.v4.runtime.RecognitionException; | ||
| import org.antlr.v4.runtime.Recognizer; | ||
| import org.antlr.v4.runtime.Token; | ||
| import org.cactoos.Text; | ||
| import org.eolang.parser.EoParser; | ||
| import org.eolang.parser.ParsingException; | ||
| import org.xembly.Directive; | ||
|
|
||
| /** | ||
| * Accumulates all parsing errors related to EO parser. | ||
| * @since 0.50 | ||
| */ | ||
| public final class EoParserErrors extends BaseErrorListener implements Iterable<Directive> { | ||
|
|
||
| /** | ||
| * Errors accumulated. | ||
| */ | ||
| private final List<ParsingException> errors; | ||
|
|
||
| /** | ||
| * The source. | ||
| */ | ||
| private final Lines lines; | ||
|
|
||
| /** | ||
| * Ctor. | ||
| * @param src The source in lines | ||
| */ | ||
| public EoParserErrors(final List<Text> src) { | ||
| this(new ArrayList<>(0), new Lines(src)); | ||
| } | ||
|
|
||
| /** | ||
| * Ctor. | ||
| * @param errors Errors accumulated | ||
| * @param lines The source in lines | ||
| */ | ||
| private EoParserErrors(final List<ParsingException> errors, final Lines lines) { | ||
| this.errors = errors; | ||
| this.lines = lines; | ||
| } | ||
|
|
||
| // @checkstyle ParameterNumberCheck (10 lines) | ||
| @Override | ||
| public void syntaxError( | ||
| final Recognizer<?, ?> recognizer, | ||
| final Object symbol, | ||
| final int line, | ||
| final int position, | ||
| final String msg, | ||
| final RecognitionException error | ||
| ) { | ||
| if (!Parser.class.isInstance(recognizer)) { | ||
| throw new IllegalArgumentException( | ||
| String.format( | ||
| "Illegal usage of %s, please use it to recognize only EO parser errors", this | ||
| ) | ||
| ); | ||
| } | ||
| if (error instanceof NoViableAltException || error instanceof InputMismatchException) { | ||
| final Token token = (Token) symbol; | ||
| final Parser parser = (Parser) recognizer; | ||
| final String rule = parser.getRuleInvocationStack().get(0); | ||
| final String[] names = parser.getRuleNames(); | ||
| final String detailed; | ||
| if (names[EoParser.RULE_objects].equals(rule)) { | ||
| detailed = "Invalid object declaration"; | ||
| } else if (names[EoParser.RULE_metas].equals(rule)) { | ||
| detailed = "Invalid meta declaration"; | ||
| } else if (names[EoParser.RULE_program].equals(rule)) { | ||
| detailed = "Invalid program declaration"; | ||
| } else { | ||
| detailed = "no viable alternative at input"; | ||
| } | ||
| this.errors.add( | ||
| new ParsingException( | ||
| String.format( | ||
| "[%d:%d] %s: %s:%n%s", | ||
| line, position, | ||
| "error", | ||
| detailed, | ||
| new UnderlinedMessage( | ||
| this.lines.line(line), | ||
| position, | ||
| Math.max(token.getStopIndex() - token.getStartIndex(), 1) | ||
| ).formatted() | ||
| ), | ||
| error, | ||
| line | ||
| ) | ||
| ); | ||
| } else if (Objects.isNull(error)) { | ||
| this.errors.add( | ||
| new ParsingException( | ||
| String.format( | ||
| "[%d:%d] %s: %s", line, position, "error", msg | ||
| ), | ||
| line | ||
| ) | ||
| ); | ||
| } else { | ||
| this.errors.add( | ||
| new ParsingException( | ||
| String.format( | ||
| "[%d:%d] %s: \"%s\"", | ||
| line, position, msg, this.lines.line(line) | ||
| ), | ||
| error, | ||
| line | ||
| ) | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| @Override | ||
| public Iterator<Directive> iterator() { | ||
| return null; | ||
| return new ErrorDirectives(this.errors).iterator(); | ||
| } | ||
|
|
||
| /** | ||
| * The number of errors. | ||
| * @return The number of errors. | ||
| */ | ||
| public int size() { | ||
| return this.errors.size(); | ||
| } | ||
| } |
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