svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.expressionevaluator / org.gvsig.expressionevaluator.lib / org.gvsig.expressionevaluator.lib.impl / src / main / java / org / gvsig / expressionevaluator / impl / DefaultStatement.java @ 44533
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package org.gvsig.expressionevaluator.impl; |
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import java.util.ArrayList; |
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import java.util.List; |
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import java.util.Objects; |
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import org.apache.commons.lang3.ArrayUtils; |
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import org.apache.commons.lang3.StringUtils; |
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import org.gvsig.expressionevaluator.Code; |
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import org.gvsig.expressionevaluator.Code.Caller; |
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import org.gvsig.expressionevaluator.Codes; |
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import static org.gvsig.expressionevaluator.ExpressionBuilder.FUNCTION_LIST; |
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import org.gvsig.expressionevaluator.ExpressionSyntaxException; |
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import org.gvsig.expressionevaluator.LexicalAnalyzer.Token; |
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import org.gvsig.expressionevaluator.Statement; |
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import org.gvsig.expressionevaluator.Statement.CompoundRule; |
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import org.gvsig.expressionevaluator.Statement.ConditionalRule; |
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import org.gvsig.expressionevaluator.Statement.Rule; |
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import org.gvsig.expressionevaluator.Statement.StatementContext; |
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import org.gvsig.expressionevaluator.impl.function.programming.CodeBlockFunction; |
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import org.gvsig.expressionevaluator.impl.DefaultCodeBuilder.BaseCodes; |
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|
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/**
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*
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* @author jjdelcerro
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*/
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public class DefaultStatement implements Statement { |
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private final List<Rule> rules; |
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private final String name; |
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private StatementBuilder stmtBuilder;
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// private String codeId;
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// private ArgsBuilder argsBuilder;
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public interface RepeatRule extends CompoundRule { |
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public String getClassifier(); |
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} |
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public class RuleRequireAnyToken implements Rule { |
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private final String[] required_token; |
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public RuleRequireAnyToken(String... required_token) { |
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this.required_token = required_token;
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} |
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@Override
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public void parse(StatementContext context) { |
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Token token = context.look_token(); |
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if (!token.is(this.required_token)) { |
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throw new ExpressionSyntaxException( |
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I18N.A_XTokenX_was_expected_and_XliteralX_was_found( |
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StringUtils.join(this.required_token,", "), |
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token.getLiteral() |
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), |
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context.getLexicalAnalyzer() |
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); |
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} |
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context.next_token(); |
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} |
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|
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private boolean isApplicable(StatementContext context) { |
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Token token = context.look_token(); |
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return token.is(this.required_token); |
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} |
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|
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@Override
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public String toString() { |
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return "require_token(" + StringUtils.join(this.required_token) + ")"; |
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} |
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|
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} |
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public class RuleRequireIdentifier implements Rule { |
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private final String id; |
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public RuleRequireIdentifier(String id) { |
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this.id = id;
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} |
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@Override
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public void parse(StatementContext context) { |
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Token token = context.look_token(); |
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if (token.getType() != Token.IDENTIFIER) {
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throw new ExpressionSyntaxException( |
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I18N.An_identifier_was_expected_and_XliteralX_was_found(token.getLiteral()), |
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context.getLexicalAnalyzer() |
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); |
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} |
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String identifier = (String) token.getLiteral(); |
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Code code = context.getCodeBuilder().constant(identifier); |
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context.setCode(id, code); |
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context.next_token(); |
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} |
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@Override
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public String toString() { |
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return "require_identifier('" + this.id + "')"; |
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} |
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} |
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public class RuleRequireLiteralString implements Rule { |
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private final String id; |
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public RuleRequireLiteralString(String id) { |
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this.id = id;
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} |
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@Override
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public void parse(StatementContext context) { |
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Token token = context.look_token(); |
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if (token.getType() != Token.STRING_LITERAL) {
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throw new ExpressionSyntaxException( |
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I18N.A_string_literal_was_expected(), |
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context.getLexicalAnalyzer() |
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); |
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} |
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String identifier = (String) token.getLiteral(); |
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Code code = context.getCodeBuilder().constant(identifier); |
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context.setCode(id, code); |
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context.next_token(); |
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} |
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@Override
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public String toString() { |
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return "require_literal_string('" + this.id + "')"; |
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} |
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} |
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public class RuleRequireExpression implements Rule { |
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private final String id; |
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public RuleRequireExpression(String id) { |
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this.id = id;
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} |
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@Override
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public void parse(StatementContext context) { |
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Code code = context.parse_expression(); |
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if (code == null) { |
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throw new ExpressionSyntaxException(context.getLexicalAnalyzer()); |
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} |
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context.setCode(id, code); |
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} |
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@Override
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public String toString() { |
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return "require_expression('" + this.id + "')"; |
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} |
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} |
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|
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public class RuleSetExpression implements Rule { |
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private final String id; |
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private final Object value; |
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public RuleSetExpression(String id, Object value) { |
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this.id = id;
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this.value = value;
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} |
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@Override
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public void parse(StatementContext context) { |
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if( this.value instanceof Code ) { |
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context.setCode(id, (Code) this.value);
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} else {
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context.setCode(id, context.getCodeBuilder().constant(value)); |
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} |
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} |
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@Override
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public String toString() { |
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return "set_expression('" + this.id + "', "+Objects.toString(value)+")"; |
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} |
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} |
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public class RuleRequiereExpressions implements Rule { |
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private final String id; |
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private final String separator; |
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public RuleRequiereExpressions(String id, String separator) { |
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this.id = id;
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this.separator = separator;
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} |
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@Override
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public void parse(StatementContext context) { |
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Codes codes = context.parse_expressions(this.separator);
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if (codes == null) { |
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throw new ExpressionSyntaxException(context.getLexicalAnalyzer()); |
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} |
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Code code; |
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if( codes.size()==1 ) { |
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code = codes.get(0);
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} else {
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code = context.getCodeBuilder().function(CodeBlockFunction.NAME, codes); |
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} |
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context.setCode(id, code); |
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} |
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@Override
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public String toString() { |
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return "require_expressions('" + this.id + "', '" + this.separator + "')"; |
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} |
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} |
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public abstract class AbstractConditionalRule implements ConditionalRule { |
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protected final List<Rule> onTrueRules; |
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protected final List<Rule> onFalseRules; |
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public AbstractConditionalRule() {
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this.onTrueRules = new ArrayList<>(); |
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this.onFalseRules = new ArrayList<>(); |
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} |
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protected void parseOnTrueRules(StatementContext context) { |
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for (Rule rule : this.onTrueRules) { |
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rule.parse(context); |
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} |
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} |
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protected void parseOnFalseRules(StatementContext context) { |
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for (Rule rule : this.onFalseRules) { |
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rule.parse(context); |
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} |
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} |
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@Override
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public ConditionalRule addRuleOnTrue(Rule rule) {
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this.onTrueRules.add(rule);
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return this; |
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} |
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@Override
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public ConditionalRule addRuleOnFalse(Rule rule) {
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this.onFalseRules.add(rule);
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return this; |
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} |
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} |
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public class RuleOptionalAnyToken implements ConditionalRule { |
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private final String[] optional_token; |
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private final List<Rule> onTrueRules; |
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private final List<Rule> onFalseRules; |
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public RuleOptionalAnyToken(String... optional_token) { |
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this.optional_token = optional_token;
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this.onTrueRules = new ArrayList<>(); |
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this.onFalseRules = new ArrayList<>(); |
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} |
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@Override
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public void parse(StatementContext context) { |
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Token token = context.look_token(); |
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if (token.is(this.optional_token)) { |
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context.next_token(); |
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for (Rule rule : this.onTrueRules) { |
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rule.parse(context); |
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} |
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} else {
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for (Rule rule : this.onFalseRules) { |
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rule.parse(context); |
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} |
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} |
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} |
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@Override
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public RuleOptionalAnyToken addRuleOnTrue(Rule rule) {
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this.onTrueRules.add(rule);
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return this; |
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} |
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@Override
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public RuleOptionalAnyToken addRuleOnFalse(Rule rule) {
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this.onFalseRules.add(rule);
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return this; |
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} |
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@Override
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public String toString() { |
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return "optional_token(" + StringUtils.join(this.optional_token) + ") rules:" + StringUtils.join(onTrueRules, ","); |
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} |
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} |
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public class RuleRepeatUntilAnyTokens implements RepeatRule { |
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private final String[] exit_tokens; |
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private final List<Rule> rules; |
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private int counter; |
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public RuleRepeatUntilAnyTokens(String[] exit_tokens) { |
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this.exit_tokens = exit_tokens;
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this.rules = new ArrayList<>(); |
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} |
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@Override
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public void parse(StatementContext context) { |
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String save = context.getCodeClassifier();
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try {
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this.counter = 1; |
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while (true) { |
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Token token = context.look_token(); |
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if (token.is(this.exit_tokens)) { |
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break;
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} |
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context.setCodeClassifier(String.valueOf(counter).trim());
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for (Rule rule : rules) {
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rule.parse(context); |
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} |
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this.counter = this.counter + 1; |
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} |
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} finally {
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context.setCodeClassifier(save); |
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} |
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} |
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@Override
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public RuleRepeatUntilAnyTokens addRule(Rule rule) {
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this.rules.add(rule);
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return this; |
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} |
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@Override
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public String getClassifier() { |
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String s = String.valueOf(counter).trim(); |
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return s;
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} |
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@Override
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public String toString() { |
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return "repeat_until_tokens('" + ArrayUtils.toString(this.exit_tokens) + "') rules:" + StringUtils.join(rules, ","); |
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} |
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} |
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public class RuleOptionalIdentifiers extends AbstractConditionalRule implements ConditionalRule { |
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private final String id; |
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private final String separator; |
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public RuleOptionalIdentifiers(String id, String separator) { |
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super();
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this.id = id;
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this.separator = separator;
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} |
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@Override
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public void parse(StatementContext context) { |
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BaseCodes args = (BaseCodes) context.getCodeBuilder().args(); |
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Token token = context.look_token(); |
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while (token.getType() == Token.IDENTIFIER) {
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String identifier = (String) token.getLiteral(); |
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if( context.isReservedWord(identifier) ) {
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break;
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} |
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Code code = context.getCodeBuilder().constant(identifier); |
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args.add(code); |
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context.next_token(); |
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token = context.look_token(); |
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if (!token.is(this.separator)) { |
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break;
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} |
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context.next_token(); |
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token = context.look_token(); |
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} |
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if (args.size() != 0) { |
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Code code = context.getCodeBuilder().function(FUNCTION_LIST, args); |
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context.setCode(id, code); |
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this.parseOnTrueRules(context);
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} else {
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this.parseOnFalseRules(context);
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} |
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} |
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@Override
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public String toString() { |
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return "optional_identifiers('" + id + "', '" + this.separator + "')"; |
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} |
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} |
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public class RuleOptionalLiteralString extends AbstractConditionalRule implements ConditionalRule { |
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private final String id; |
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public RuleOptionalLiteralString(String id) { |
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super();
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this.id = id;
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} |
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@Override
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public void parse(StatementContext context) { |
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Token token = context.look_token(); |
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if (token.getType() == Token.STRING_LITERAL) {
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String s = (String) token.getLiteral(); |
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Code code = context.getCodeBuilder().constant(s); |
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context.setCode(id, code); |
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context.next_token(); |
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this.parseOnTrueRules(context);
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} else {
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this.parseOnFalseRules(context);
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} |
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} |
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|
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@Override
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public String toString() { |
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return "optional_literal_string('" + id + "')"; |
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} |
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} |
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|
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public static class ArgsBuilderFromNames implements ArgsBuilder { |
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private final String[] argNames; |
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public ArgsBuilderFromNames(String... argNames) { |
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this.argNames = argNames;
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} |
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@Override
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public Codes build(StatementContext context) {
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BaseCodes args = (BaseCodes) context.getCodeBuilder().args(); |
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for (String argName : argNames) { |
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if (argName.contains("#")) { |
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int n = 1; |
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while (true) { |
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String argNameX = StringUtils.replace(argName, "#", String.valueOf(n).trim(), 1); |
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Code code = context.getCode(argNameX); |
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if (code == null) { |
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break;
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} |
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args.add(code); |
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n++; |
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} |
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} else {
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Code code = context.getCode(argName); |
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if( code == null) { |
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code = context.getCodeBuilder().constant(null);
|
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} |
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args.add(code); |
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} |
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} |
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return args;
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} |
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} |
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|
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public static class ArgsBuilderExpand extends ArgsBuilderFromNames { |
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|
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public ArgsBuilderExpand(String... argNames) { |
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super(argNames);
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} |
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|
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@Override
|
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public Codes build(StatementContext context) {
|
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BaseCodes args = (BaseCodes) context.getCodeBuilder().args(); |
461 |
|
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Codes base_args = super.build(context);
|
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for (Code arg : base_args) {
|
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if( arg.code() == Code.CALLER &&
|
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((Caller)arg).name().equals(CodeBlockFunction.NAME) ) { |
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Codes block_args = ((Caller)arg).parameters(); |
467 |
for (Code block_arg : block_args) {
|
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args.add(block_arg); |
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} |
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} else {
|
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args.add(arg); |
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} |
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} |
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return args;
|
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} |
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} |
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|
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public static class StatementBuilderBase implements StatementBuilder { |
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protected ArgsBuilder argsBuilder;
|
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protected String codeID; |
481 |
|
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public StatementBuilderBase(String codeID, ArgsBuilder argsBuilder) { |
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this.codeID = codeID;
|
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this.argsBuilder = argsBuilder;
|
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} |
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|
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@Override
|
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public String getCodeID() { |
489 |
return this.codeID; |
490 |
} |
491 |
|
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@Override
|
493 |
public ArgsBuilder getArgsBuilder() {
|
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return this.argsBuilder; |
495 |
} |
496 |
|
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@Override
|
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public Code build(StatementContext context) {
|
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Codes args = this.getArgsBuilder().build(context);
|
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Code code = null;
|
501 |
if (this.getCodeID() == null) { |
502 |
code = args.get(0);
|
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} else {
|
504 |
if (args.size() == 0) { |
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code = context.getCodeBuilder().function(this.getCodeID(), null); |
506 |
} else {
|
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// Si es un bloque dentro de otro, dejamos solo uno.
|
508 |
if( args.size()==1 && |
509 |
StringUtils.equalsIgnoreCase(CodeBlockFunction.NAME,this.getCodeID()) ) {
|
510 |
Code code0 = args.get(0);
|
511 |
if( code0.code() == Code.CALLER &&
|
512 |
StringUtils.equalsIgnoreCase(CodeBlockFunction.NAME,((Caller)code0).name()) |
513 |
) { |
514 |
code = code0; |
515 |
} |
516 |
} |
517 |
if( code == null ) { |
518 |
code = context.getCodeBuilder().function(this.getCodeID(), args);
|
519 |
} |
520 |
} |
521 |
} |
522 |
return code;
|
523 |
} |
524 |
} |
525 |
|
526 |
public DefaultStatement(String name) { |
527 |
this.rules = new ArrayList<>(); |
528 |
this.stmtBuilder = null; |
529 |
this.name = name;
|
530 |
} |
531 |
|
532 |
@Override
|
533 |
public String getName() { |
534 |
return name;
|
535 |
} |
536 |
|
537 |
@Override
|
538 |
public Rule require_any_token(String... token) { |
539 |
return new RuleRequireAnyToken(token); |
540 |
} |
541 |
|
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@Override
|
543 |
public Rule require_identifier(String id) { |
544 |
return new RuleRequireIdentifier(id); |
545 |
} |
546 |
|
547 |
@Override
|
548 |
public Rule require_literal_string(String id) { |
549 |
return new RuleRequireLiteralString(id); |
550 |
} |
551 |
|
552 |
@Override
|
553 |
public Rule set_expression(String id, Object value) { |
554 |
return new RuleSetExpression(id, value); |
555 |
} |
556 |
|
557 |
@Override
|
558 |
public Rule require_expression(String id) { |
559 |
return new RuleRequireExpression(id); |
560 |
} |
561 |
|
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@Override
|
563 |
public Rule require_expressions(String id, String separator) { |
564 |
return new RuleRequiereExpressions(id, separator); |
565 |
} |
566 |
|
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@Override
|
568 |
public ConditionalRule optional_any_token(String... id) { |
569 |
return new RuleOptionalAnyToken(id); |
570 |
} |
571 |
|
572 |
@Override
|
573 |
public ConditionalRule optional_identifiers(String id, String separator) { |
574 |
return new RuleOptionalIdentifiers(id, separator); |
575 |
} |
576 |
|
577 |
@Override
|
578 |
public ConditionalRule optional_literal_string(String id) { |
579 |
return new RuleOptionalLiteralString(id); |
580 |
} |
581 |
|
582 |
@Override
|
583 |
public CompoundRule repeat_until_any_tokens(String... tokens) { |
584 |
return new RuleRepeatUntilAnyTokens(tokens); |
585 |
} |
586 |
|
587 |
@Override
|
588 |
public Statement addRule(Rule rule) { |
589 |
this.rules.add(rule);
|
590 |
return this; |
591 |
} |
592 |
|
593 |
@Override
|
594 |
public boolean isApplicable(StatementContext context) { |
595 |
if (this.rules.isEmpty()) { |
596 |
return false; |
597 |
} |
598 |
Rule rule = this.rules.get(0); |
599 |
if (!(rule instanceof RuleRequireAnyToken)) { |
600 |
return false; |
601 |
} |
602 |
return ((RuleRequireAnyToken) rule).isApplicable(context);
|
603 |
} |
604 |
|
605 |
@Override
|
606 |
public ArgsBuilder args_names(String... args) { |
607 |
ArgsBuilder x = new ArgsBuilderFromNames(args);
|
608 |
return x;
|
609 |
} |
610 |
|
611 |
@Override
|
612 |
public ArgsBuilder args_expand(String... args) { |
613 |
ArgsBuilder x = new ArgsBuilderExpand(args);
|
614 |
return x;
|
615 |
} |
616 |
|
617 |
@Override
|
618 |
public void code(final String id, final ArgsBuilder argsBuilder) { |
619 |
this.builder(new StatementBuilderBase(id, argsBuilder)); |
620 |
} |
621 |
|
622 |
public void builder(StatementBuilder builder) { |
623 |
this.stmtBuilder = builder;
|
624 |
} |
625 |
|
626 |
@Override
|
627 |
public Code parse(StatementContext context) {
|
628 |
// System.err.println("start parse "+this.getName());
|
629 |
for (Rule rule : rules) {
|
630 |
rule.parse(context); |
631 |
} |
632 |
Code code = this.stmtBuilder.build(context);
|
633 |
return code;
|
634 |
} |
635 |
|
636 |
@Override
|
637 |
public String toString() { |
638 |
return this.getName() + " " + StringUtils.join(this.rules, ";"); |
639 |
|
640 |
} |
641 |
} |