Examples with FuzzyParser org.matheclipse.api.parser.FuzzyParser used on opensource projects

Example 1 with FuzzyParser

use of org.matheclipse.api.parser.FuzzyParser in project symja_android_library by axkr.

the class Pods method parseInput.

/**
 * package private
 */
static IExpr parseInput(String inputStr, EvalEngine engine) {
    engine.setPackageMode(false);
    IExpr inExpr = F.NIL;
    // }
    if (!inExpr.isPresent()) {
        final FuzzyParser parser = new FuzzyParser(engine);
        try {
            inExpr = parser.parseFuzzyList(inputStr);
        } catch (SyntaxError serr) {
            // this includes syntax errors
            LOGGER.debug("Pods: FuzzyParser.parseFuzzyList() failed", serr);
            TeXParser texConverter = new TeXParser(engine);
            inExpr = texConverter.toExpression(inputStr);
        }
    }
    if (inExpr == S.$Aborted) {
        return F.NIL;
    }
    if (inExpr.isList() && inExpr.size() == 2) {
        inExpr = inExpr.first();
    }
    if (inExpr.isTimes() && !inExpr.isNumericFunction(true) && inExpr.argSize() <= 4) {
        if (((IAST) inExpr).isEvalFlagOn(IAST.TIMES_PARSED_IMPLICIT)) {
            inExpr = flattenTimes((IAST) inExpr).orElse(inExpr);
            IAST rest = ((IAST) inExpr).setAtClone(0, S.List);
            IASTAppendable specialFunction = F.NIL;
            String stemForm = getStemForm(rest.arg1().toString().toLowerCase());
            IExpr head = rest.head();
            if (stemForm != null) {
                head = STEM.getSymbol(stemForm);
                if (head != null) {
                    specialFunction = rest.setAtClone(0, head);
                    specialFunction.remove(1);
                }
            }
            if (!specialFunction.isPresent()) {
                stemForm = getStemForm(rest.last().toString().toLowerCase());
                if (stemForm != null) {
                    head = STEM.getSymbol(stemForm);
                    if (head != null) {
                        specialFunction = rest.setAtClone(0, head);
                        specialFunction.remove(rest.size() - 1);
                    }
                }
            }
            if (specialFunction.isPresent()) {
                if (head != null) {
                    if (head == S.UnitConvert) {
                        IExpr temp = unitConvert(engine, rest.rest());
                        if (temp.isPresent()) {
                            return temp;
                        }
                    } else {
                        int i = 1;
                        while (i < specialFunction.size()) {
                            String argStr = specialFunction.get(i).toString().toLowerCase();
                            if (argStr.equalsIgnoreCase("by") || argStr.equalsIgnoreCase("for")) {
                                specialFunction.remove(i);
                                continue;
                            }
                            i++;
                        }
                        return specialFunction;
                    }
                }
            }
            if (rest.arg1().toString().equalsIgnoreCase("convert")) {
                rest = inExpr.rest();
            }
            if (rest.argSize() > 2) {
                rest = rest.removeIf(x -> x.toString().equals("in"));
            }
            IExpr temp = unitConvert(engine, rest);
            if (temp.isPresent()) {
                return temp;
            }
        }
    }
    return inExpr;
}