Examples with IPattern org.matheclipse.core.interfaces.IPattern used on opensource projects

Example 1 with IPattern

use of org.matheclipse.core.interfaces.IPattern in project symja_android_library by axkr.

the class CompareToTestCase method testIssue122c.

public void testIssue122c() {
    ISymbol b = F.$s("b");
    ISymbol c = F.$s("c");
    ISymbol x1 = F.$s("x1");
    ISymbol x3 = F.$s("x3");
    ISymbol x4 = F.$s("x4");
    ISymbol x5 = F.$s("x5");
    IPattern x1_c = F.$p(x1, c);
    IPattern x3_b = F.$p(x3, b);
    IPattern x3_c = F.$p(x3, c);
    IPattern x5_c = F.$p(x5, c);
    IAST ast1 = F.Times(x3, x5, x5_c);
    IAST ast2 = F.Times(F.CN1, x1_c, x3_b, x3_c);
    int res = ast1.compareTo(ast2);
    assertEquals(2, res);
    res = ast2.compareTo(ast1);
    assertEquals(-2, res);
    check("-Infinity+b+a", "-Infinity+a+b");
}

Example 2 with IPattern

use of org.matheclipse.core.interfaces.IPattern in project symja_android_library by axkr.

the class CompareToTestCase method testIssue122a.

public void testIssue122a() {
    ISymbol b = F.$s("b");
    ISymbol c = F.$s("c");
    ISymbol x1 = F.$s("x1");
    ISymbol x3 = F.$s("x3");
    ISymbol x4 = F.$s("x4");
    ISymbol x5 = F.$s("x5");
    IPattern x1_c = F.$p(x1, c);
    IPattern x3_b = F.$p(x3, b);
    IPattern x3_c = F.$p(x3, c);
    IPattern x4_c = F.$p(x4, c);
    IAST ast1 = F.Times(F.CN1, x1_c, x3_b, x3_c);
    IAST ast2 = F.Times(F.CN1, x3, x5, x1_c, x4_c);
    int res = ast1.compareTo(ast2);
    assertEquals(-1, res);
    res = ast2.compareTo(ast1);
    assertEquals(1, res);
    check("-Infinity+b+a", "-Infinity+a+b");
}

Example 3 with IPattern

use of org.matheclipse.core.interfaces.IPattern in project symja_android_library by axkr.

the class PatternMatcher method matchDefaultArgumentsAST.

/**
	 * Match the <code>lhsPatternAST</code> with its <code>Default[]</code> values.
	 * 
	 * @param symbolWithDefaultValue
	 *            the symbol for getting the associated default values from
	 * @param lhsPatternAST
	 *            left-hand-side which may contain patterns with default values
	 * @return <code>F.NIL</code> if the given <code>lhsPatternAST</code> could not be matched or contains no pattern
	 *         with default value.
	 */
private IExpr matchDefaultArgumentsAST(ISymbol symbolWithDefaultValue, IAST lhsPatternAST) {
    IAST cloned = F.ast(lhsPatternAST.head(), lhsPatternAST.size(), false);
    boolean defaultValueMatched = false;
    for (int i = 1; i < lhsPatternAST.size(); i++) {
        if (lhsPatternAST.get(i).isPatternDefault()) {
            IPattern pattern = (IPattern) lhsPatternAST.get(i);
            IExpr positionDefaultValue = pattern.getDefaultValue();
            if (positionDefaultValue == null) {
                positionDefaultValue = symbolWithDefaultValue.getDefaultValue(i);
            }
            if (positionDefaultValue != null) {
                if (!((IPatternObject) lhsPatternAST.get(i)).matchPattern(positionDefaultValue, fPatternMap)) {
                    return F.NIL;
                }
                defaultValueMatched = true;
                continue;
            } else {
                IExpr commonDefaultValue = symbolWithDefaultValue.getDefaultValue();
                if (commonDefaultValue != null) {
                    if (!((IPatternObject) lhsPatternAST.get(i)).matchPattern(commonDefaultValue, fPatternMap)) {
                        return F.NIL;
                    }
                    defaultValueMatched = true;
                    continue;
                }
            }
        }
        cloned.append(lhsPatternAST.get(i));
    }
    if (defaultValueMatched) {
        if (cloned.isOneIdentityAST1()) {
            return cloned.arg1();
        }
        return cloned;
    }
    return F.NIL;
}

Example 4 with IPattern

use of org.matheclipse.core.interfaces.IPattern in project symja_android_library by axkr.

the class PatternMatcher method matchOptionalArgumentsAST.

/**
	 * Match the <code>lhsPatternAST</code> with its <code>Default[]</code> values.
	 * 
	 * @param symbolWithDefaultValue
	 *            the symbol for getting the associated default values from
	 * @param lhsPatternAST
	 *            left-hand-side which may contain patterns with default values
	 * @return <code>F.NIL</code> if the given <code>lhsPatternAST</code> could not be matched or contains no pattern
	 *         with default value.
	 */
private IExpr matchOptionalArgumentsAST(ISymbol symbolWithDefaultValue, IAST lhsPatternAST, IAST lhsEvalAST) {
    int lhsSize = lhsEvalAST.size();
    IAST cloned = F.ast(lhsPatternAST.head(), lhsPatternAST.size(), false);
    boolean defaultValueMatched = false;
    for (int i = 1; i < lhsPatternAST.size(); i++) {
        if (lhsPatternAST.get(i).isPatternDefault()) {
            IPattern pattern = (IPattern) lhsPatternAST.get(i);
            if (i < lhsSize) {
                cloned.append(pattern);
                continue;
            }
            IExpr positionDefaultValue = pattern.getDefaultValue();
            if (positionDefaultValue == null) {
                positionDefaultValue = symbolWithDefaultValue.getDefaultValue(i);
            }
            if (positionDefaultValue != null) {
                if (!((IPatternObject) lhsPatternAST.get(i)).matchPattern(positionDefaultValue, fPatternMap)) {
                    return F.NIL;
                }
                defaultValueMatched = true;
                continue;
            } else {
                IExpr commonDefaultValue = symbolWithDefaultValue.getDefaultValue();
                if (commonDefaultValue != null) {
                    if (!((IPatternObject) lhsPatternAST.get(i)).matchPattern(commonDefaultValue, fPatternMap)) {
                        return F.NIL;
                    }
                    defaultValueMatched = true;
                    continue;
                }
            }
        }
        cloned.append(lhsPatternAST.get(i));
    }
    if (defaultValueMatched) {
        if (cloned.isOneIdentityAST1()) {
            return cloned.arg1();
        }
        return cloned;
    }
    return F.NIL;
}

Example 5 with IPattern

use of org.matheclipse.core.interfaces.IPattern in project symja_android_library by axkr.

the class Pattern method equivalent.

/**
 * Check if the two left-hand-side pattern expressions are equivalent. (i.e. <code>f[x_,y_]</code>
 * is equivalent to <code>f[a_,b_]</code> )
 *
 * @param patternObject
 * @param pm1
 * @param pm2
 * @return
 */
@Override
public boolean equivalent(final IPatternObject patternObject, final IPatternMap pm1, IPatternMap pm2) {
    if (this == patternObject) {
        return true;
    }
    if (patternObject instanceof Pattern) {
        // test if the pattern indices are equal
        final IPattern p2 = (IPattern) patternObject;
        if (getIndex(pm1) != p2.getIndex(pm2)) {
            return false;
        }
        // test if the "check" expressions are equal
        final IExpr o1 = getHeadTest();
        final IExpr o2 = p2.getHeadTest();
        if ((o1 == null) || (o2 == null)) {
            return o1 == o2;
        }
        return o1.equals(o2);
    }
    return false;
}