From: James Ahlborn Date: Wed, 26 Oct 2016 20:24:41 +0000 (+0000) Subject: test parsing of basic expressions X-Git-Tag: jackcess-2.2.0~24^2~64 X-Git-Url: https://source.dussan.org/?a=commitdiff_plain;h=46926ceb6fc192f3895c6736be58a93505ec031c;p=jackcess.git test parsing of basic expressions git-svn-id: https://svn.code.sf.net/p/jackcess/code/jackcess/branches/exprs@1053 f203690c-595d-4dc9-a70b-905162fa7fd2 --- diff --git a/src/main/java/com/healthmarketscience/jackcess/util/Expressionator.java b/src/main/java/com/healthmarketscience/jackcess/util/Expressionator.java index a2eeed8..6b5d3fd 100644 --- a/src/main/java/com/healthmarketscience/jackcess/util/Expressionator.java +++ b/src/main/java/com/healthmarketscience/jackcess/util/Expressionator.java @@ -16,8 +16,6 @@ limitations under the License. package com.healthmarketscience.jackcess.util; -import java.text.ParseException; -import java.text.SimpleDateFormat; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; @@ -28,9 +26,9 @@ import java.util.HashSet; import java.util.Iterator; import java.util.LinkedList; import java.util.List; -import java.util.ListIterator; import java.util.Map; import java.util.Set; +import java.util.regex.Pattern; import com.healthmarketscience.jackcess.Database; import com.healthmarketscience.jackcess.impl.DatabaseImpl; @@ -83,12 +81,18 @@ public class Expressionator private interface OpType {} private enum UnaryOp implements OpType { - NEG("-"), NOT("Not"); + NEG("-", false), NOT("Not", true); private final String _str; + private final boolean _needSpace; - private UnaryOp(String str) { + private UnaryOp(String str, boolean needSpace) { _str = str; + _needSpace = needSpace; + } + + public boolean needsSpace() { + return _needSpace; } @Override @@ -98,7 +102,7 @@ public class Expressionator } private enum BinaryOp implements OpType { - PLUS("+"), MINUS("-"), MULT("*"), DIV("-"), INT_DIV("\\"), EXP("^"), + PLUS("+"), MINUS("-"), MULT("*"), DIV("/"), INT_DIV("\\"), EXP("^"), CONCAT("&"), MOD("Mod"); private final String _str; @@ -181,6 +185,10 @@ public class Expressionator new OpType[]{SpecOp.IN, SpecOp.NOT_IN, SpecOp.BETWEEN, SpecOp.NOT_BETWEEN}); + private static final Set REGEX_SPEC_CHARS = new HashSet( + Arrays.asList('\\','.','%','=','+', '$','^','|','(',')','{','}','&')); + + private static final Expr THIS_COL_VALUE = new Expr() { @Override protected Object eval(RowContext ctx) { return ctx.getThisColumnValue(); @@ -189,36 +197,16 @@ public class Expressionator sb.append(""); } }; - private static final Expr NULL_VALUE = new Expr() { - @Override protected Object eval(RowContext ctx) { - return null; - } - @Override protected void toExprString(StringBuilder sb, boolean isDebug) { - sb.append("Null"); - } - }; - private static final Expr TRUE_VALUE = new Expr() { - @Override protected Object eval(RowContext ctx) { - return Boolean.TRUE; - } - @Override protected void toExprString(StringBuilder sb, boolean isDebug) { - sb.append("True"); - } - }; - private static final Expr FALSE_VALUE = new Expr() { - @Override protected Object eval(RowContext ctx) { - return Boolean.FALSE; - } - @Override protected void toExprString(StringBuilder sb, boolean isDebug) { - sb.append("False"); - } - }; + + private static final Expr NULL_VALUE = new EConstValue(null, "Null"); + private static final Expr TRUE_VALUE = new EConstValue(Boolean.TRUE, "True"); + private static final Expr FALSE_VALUE = new EConstValue(Boolean.FALSE, "False"); private Expressionator() { } - public static String testTokenize(Type exprType, String exprStr, Database db) { + static String testTokenize(Type exprType, String exprStr, Database db) { List tokens = trimSpaces( ExpressionTokenizer.tokenize(exprType, exprStr, (DatabaseImpl)db)); @@ -281,7 +269,7 @@ public class Expressionator switch(t.getType()) { case OBJ_NAME: - buf.setPendingExpr(parseObjectReference(t, buf)); + parseObjectRefExpression(t, buf); break; case LITERAL: @@ -306,18 +294,7 @@ public class Expressionator case COMP: - if(!buf.hasPendingExpr() && (buf.getExprType() == Type.FIELD_VALIDATOR)) { - // comparison operators for field validators can implicitly use - // the current field value for the left value - buf.setPendingExpr(THIS_COL_VALUE); - } - if(buf.hasPendingExpr()) { - buf.setPendingExpr(parseCompOperator(t, buf)); - } else { - throw new IllegalArgumentException( - "Missing left expression for comparison operator " + - t.getValue() + " " + buf); - } + parseCompOpExpression(t, buf); break; default: @@ -328,15 +305,7 @@ public class Expressionator case DELIM: - // the only "top-level" delim we expect to find is open paren, and - // there shouldn't be any pending expression - if(!isDelim(t, OPEN_PAREN) || buf.hasPendingExpr()) { - throw new IllegalArgumentException("Unexpected delimiter " + - t.getValue() + " " + buf); - } - - Expr subExpr = findParenExprs(buf, false).get(0); - buf.setPendingExpr(new EParen(subExpr)); + parseDelimExpression(t, buf); break; case STRING: @@ -346,22 +315,17 @@ public class Expressionator if(wordType == null) { // is it a function call? - Expr funcExpr = maybeParseFuncCall(t, buf); - if(funcExpr != null) { - - buf.setPendingExpr(funcExpr); - - } else { + if(!maybeParseFuncCallExpression(t, buf)) { // is it an object name? Token next = buf.peekNext(); if((next != null) && isObjNameSep(next)) { - buf.setPendingExpr(parseObjectReference(t, buf)); + parseObjectRefExpression(t, buf); } else { - // FIXME maybe obj name, maybe string? + // FIXME maybe bare obj name, maybe string literal? throw new UnsupportedOperationException("FIXME"); } } @@ -378,27 +342,12 @@ public class Expressionator case LOG_OP: - if(buf.hasPendingExpr()) { - buf.setPendingExpr(parseLogicalOperator(t, buf)); - } else { - throw new IllegalArgumentException( - "Missing left expression for logical operator " + - t.getValue() + " " + buf); - } + parseLogicalOpExpression(t, buf); break; case CONST: - if("true".equalsIgnoreCase(t.getValueStr())) { - buf.setPendingExpr(TRUE_VALUE); - } else if("false".equalsIgnoreCase(t.getValueStr())) { - buf.setPendingExpr(FALSE_VALUE); - } else if("null".equalsIgnoreCase(t.getValueStr())) { - buf.setPendingExpr(NULL_VALUE); - } else { - throw new RuntimeException("Unexpected CONST word " - + t.getValue()); - } + parseConstExpression(t, buf); break; case SPEC_OP_PREFIX: @@ -435,7 +384,7 @@ public class Expressionator return expr; } - private static Expr parseObjectReference(Token firstTok, TokBuf buf) { + private static void parseObjectRefExpression(Token firstTok, TokBuf buf) { // object references may be joined by '.' or '!'. access syntac docs claim // object identifiers can be formatted like: @@ -476,10 +425,24 @@ public class Expressionator String objName = objNames.poll(); String collectionName = objNames.poll(); - return new EObjValue(collectionName, objName, fieldName); + buf.setPendingExpr( + new EObjValue(collectionName, objName, fieldName)); } - private static Expr maybeParseFuncCall(Token firstTok, TokBuf buf) { + private static void parseDelimExpression(Token firstTok, TokBuf buf) { + // the only "top-level" delim we expect to find is open paren, and + // there shouldn't be any pending expression + if(!isDelim(firstTok, OPEN_PAREN) || buf.hasPendingExpr()) { + throw new IllegalArgumentException("Unexpected delimiter " + + firstTok.getValue() + " " + buf); + } + + Expr subExpr = findParenExprs(buf, false).get(0); + buf.setPendingExpr(new EParen(subExpr)); + } + + private static boolean maybeParseFuncCallExpression( + Token firstTok, TokBuf buf) { int startPos = buf.curPos(); boolean foundFunc = false; @@ -488,12 +451,15 @@ public class Expressionator Token t = buf.peekNext(); if(!isDelim(t, FUNC_START_DELIM)) { // not a function call - return null; + return false; } buf.next(); List params = findParenExprs(buf, true); - return new EFunc(firstTok.getValueStr(), params); + buf.setPendingExpr( + new EFunc(firstTok.getValueStr(), params)); + foundFunc = true; + return true; } finally { if(!foundFunc) { @@ -551,9 +517,9 @@ public class Expressionator // most ops are two argument except that '-' could be negation if(buf.hasPendingExpr()) { - buf.setPendingExpr(parseBinaryOperator(t, buf)); + parseBinaryOpExpression(t, buf); } else if(isOp(t, "-")) { - buf.setPendingExpr(parseUnaryOperator(t, buf)); + parseUnaryOpExpression(t, buf); } else { throw new IllegalArgumentException( "Missing left expression for binary operator " + t.getValue() + @@ -561,35 +527,55 @@ public class Expressionator } } - private static Expr parseBinaryOperator(Token firstTok, TokBuf buf) { + private static void parseBinaryOpExpression(Token firstTok, TokBuf buf) { BinaryOp op = getOpType(firstTok, BinaryOp.class); Expr leftExpr = buf.takePendingExpr(); Expr rightExpr = parseExpression(buf, true); - return new EBinaryOp(op, leftExpr, rightExpr).resolveOrderOfOperations(); + buf.setPendingExpr(new EBinaryOp(op, leftExpr, rightExpr)); } - private static Expr parseUnaryOperator(Token firstTok, TokBuf buf) { + private static void parseUnaryOpExpression(Token firstTok, TokBuf buf) { UnaryOp op = getOpType(firstTok, UnaryOp.class); Expr val = parseExpression(buf, true); - return new EUnaryOp(op, val).resolveOrderOfOperations(); + buf.setPendingExpr(new EUnaryOp(op, val)); } - private static Expr parseCompOperator(Token firstTok, TokBuf buf) { + private static void parseCompOpExpression(Token firstTok, TokBuf buf) { + + if(!buf.hasPendingExpr()) { + if(buf.getExprType() == Type.FIELD_VALIDATOR) { + // comparison operators for field validators can implicitly use + // the current field value for the left value + buf.setPendingExpr(THIS_COL_VALUE); + } else { + throw new IllegalArgumentException( + "Missing left expression for comparison operator " + + firstTok.getValue() + " " + buf); + } + } + CompOp op = getOpType(firstTok, CompOp.class); Expr leftExpr = buf.takePendingExpr(); Expr rightExpr = parseExpression(buf, true); - return new ECompOp(op, leftExpr, rightExpr).resolveOrderOfOperations(); + buf.setPendingExpr(new ECompOp(op, leftExpr, rightExpr)); } - private static Expr parseLogicalOperator(Token firstTok, TokBuf buf) { + private static void parseLogicalOpExpression(Token firstTok, TokBuf buf) { + + if(!buf.hasPendingExpr()) { + throw new IllegalArgumentException( + "Missing left expression for logical operator " + + firstTok.getValue() + " " + buf); + } + LogOp op = getOpType(firstTok, LogOp.class); Expr leftExpr = buf.takePendingExpr(); Expr rightExpr = parseExpression(buf, true); - return new ELogicalOp(op, leftExpr, rightExpr).resolveOrderOfOperations(); + buf.setPendingExpr(new ELogicalOp(op, leftExpr, rightExpr)); } private static void parseSpecOpExpression(Token firstTok, TokBuf buf) { @@ -598,23 +584,22 @@ public class Expressionator if(specOp == SpecOp.NOT) { // this is the unary prefix operator - buf.setPendingExpr(parseUnaryOperator(firstTok, buf)); + parseUnaryOpExpression(firstTok, buf); return; } - if(!buf.hasPendingExpr() && (buf.getExprType() == Type.FIELD_VALIDATOR)) { - // comparison operators for field validators can implicitly use - // the current field value for the left value - buf.setPendingExpr(THIS_COL_VALUE); - } - if(!buf.hasPendingExpr()) { - throw new IllegalArgumentException( - "Missing left expression for comparison operator " + - specOp + " " + buf); + if(buf.getExprType() == Type.FIELD_VALIDATOR) { + // comparison operators for field validators can implicitly use + // the current field value for the left value + buf.setPendingExpr(THIS_COL_VALUE); + } else { + throw new IllegalArgumentException( + "Missing left expression for comparison operator " + + specOp + " " + buf); + } } - Expr expr = buf.takePendingExpr(); // FIXME @@ -622,7 +607,7 @@ public class Expressionator switch(specOp) { case IS_NULL: case IS_NOT_NULL: - specOpExpr = new ENullOp(specOp, expr).resolveOrderOfOperations(); + specOpExpr = new ENullOp(specOp, expr); break; case LIKE: @@ -631,8 +616,9 @@ public class Expressionator if(t.getType() != TokenType.LITERAL) { throw new IllegalArgumentException("Missing Like pattern " + buf); } - specOpExpr = new ELikeOp(specOp, expr, t.getValueStr()) - .resolveOrderOfOperations(); + String patternStr = t.getValueStr(); + Pattern pattern = likePatternToRegex(patternStr, buf); + specOpExpr = new ELikeOp(specOp, expr, pattern, patternStr); break; case BETWEEN: @@ -653,20 +639,19 @@ public class Expressionator "Missing 'And' for 'Between' expression " + buf); } - if(isOp(tmpT, "and")) { + if(isString(tmpT, "and")) { buf.next(); startRangeExpr = tmpExpr; break; } // put the pending expression back and try parsing some more - buf.setPendingExpr(tmpExpr); + buf.restorePendingExpr(tmpExpr); } Expr endRangeExpr = parseExpression(buf, true); - specOpExpr = new EBetweenOp(specOp, expr, startRangeExpr, endRangeExpr) - .resolveOrderOfOperations(); + specOpExpr = new EBetweenOp(specOp, expr, startRangeExpr, endRangeExpr); break; case IN: @@ -682,7 +667,7 @@ public class Expressionator } List exprs = findParenExprs(buf, true); - specOpExpr = new EInOp(specOp, expr, exprs).resolveOrderOfOperations(); + specOpExpr = new EInOp(specOp, expr, exprs); break; default: @@ -729,6 +714,21 @@ public class Expressionator "Malformed special operator " + opStr + " " + buf); } + private static void parseConstExpression(Token firstTok, TokBuf buf) { + Expr constExpr = null; + if("true".equalsIgnoreCase(firstTok.getValueStr())) { + constExpr = TRUE_VALUE; + } else if("false".equalsIgnoreCase(firstTok.getValueStr())) { + constExpr = FALSE_VALUE; + } else if("null".equalsIgnoreCase(firstTok.getValueStr())) { + constExpr = NULL_VALUE; + } else { + throw new RuntimeException("Unexpected CONST word " + + firstTok.getValue()); + } + buf.setPendingExpr(constExpr); + } + private static boolean isObjNameSep(Token t) { return (isDelim(t, ".") || isDelim(t, "!")); } @@ -867,9 +867,14 @@ public class Expressionator throw new IllegalArgumentException( "Found multiple expressions with no operator " + this); } - _pendingExpr = expr; + _pendingExpr = expr.resolveOrderOfOperations(); } + public void restorePendingExpr(Expr expr) { + // this is an expression which was previously set, so no need to re-resolve + _pendingExpr = expr; + } + public Expr takePendingExpr() { Expr expr = _pendingExpr; _pendingExpr = null; @@ -911,6 +916,11 @@ public class Expressionator sb.append(")"); + if(_pendingExpr != null) { + sb.append(" [pending '").append(_pendingExpr.toDebugString()) + .append("']"); + } + return sb.toString(); } } @@ -948,6 +958,65 @@ public class Expressionator } } + private static Pattern likePatternToRegex(String pattern, Object location) { + + StringBuilder sb = new StringBuilder(pattern.length()); + + // Access LIKE pattern supports (note, matching is case-insensitive): + // - '*' -> 0 or more chars + // - '?' -> single character + // - '#' -> single digit + // - '[...]' -> character class, '[!...]' -> not in char class + + for(int i = 0; i < pattern.length(); ++i) { + char c = pattern.charAt(i); + + if(c == '*') { + sb.append(".*"); + } else if(c == '?') { + sb.append('.'); + } else if(c == '#') { + sb.append("\\d"); + } else if(c == '[') { + + // find closing brace + int startPos = i + 1; + int endPos = -1; + for(int j = startPos; j < pattern.length(); ++j) { + if(pattern.charAt(j) == ']') { + endPos = j; + break; + } + } + + if(endPos == -1) { + throw new IllegalArgumentException( + "Could not find closing bracket in pattern '" + pattern + "' " + + location); + } + + String charClass = pattern.substring(startPos, endPos); + + if((charClass.length() > 0) && (charClass.charAt(0) == '!')) { + // this is a negated char class + charClass = '^' + charClass.substring(1); + } + + sb.append('[').append(charClass).append(']'); + + } else if(REGEX_SPEC_CHARS.contains(c)) { + // this char is special in regexes, so escape it + sb.append('\\').append(c); + } else { + sb.append(c); + } + } + + return Pattern.compile(sb.toString(), + Pattern.CASE_INSENSITIVE | Pattern.DOTALL | + Pattern.UNICODE_CASE); + } + private interface LeftAssocExpr { public OpType getOp(); public Expr getLeft(); @@ -1001,7 +1070,7 @@ public class Expressionator } } - public Expr resolveOrderOfOperations() { + protected Expr resolveOrderOfOperations() { if(!(this instanceof LeftAssocExpr)) { // nothing we can do @@ -1070,7 +1139,26 @@ public class Expressionator String colName); } + private static final class EConstValue extends Expr + { + private final Object _val; + private final String _str; + + private EConstValue(Object val, String str) { + _val = val; + _str = str; + } + + @Override + protected Object eval(RowContext ctx) { + return _val; + } + @Override + protected void toExprString(StringBuilder sb, boolean isDebug) { + sb.append(_str); + } + } private static final class ELiteralValue extends Expr { @@ -1277,8 +1365,10 @@ public class Expressionator @Override protected void toExprString(StringBuilder sb, boolean isDebug) { - // FIXME, spacing for "Not" vs. "-"? - sb.append(_op).append(" "); + sb.append(_op); + if(isDebug || ((UnaryOp)_op).needsSpace()) { + sb.append(" "); + } _expr.toString(sb, isDebug); } } @@ -1357,11 +1447,13 @@ public class Expressionator private static class ELikeOp extends ESpecOp { - private final String _pattern; + private final Pattern _pattern; + private final String _patternStr; - private ELikeOp(SpecOp op, Expr expr, String pattern) { + private ELikeOp(SpecOp op, Expr expr, Pattern pattern, String patternStr) { super(op, expr); _pattern = pattern; + _patternStr = patternStr; } @Override @@ -1374,9 +1466,12 @@ public class Expressionator @Override protected void toExprString(StringBuilder sb, boolean isDebug) { _expr.toString(sb, isDebug); - sb.append(" ").append(_op).append(" \""); - sb.append(_pattern.replace("\"", "\"\"")); - sb.append("\""); + sb.append(" ").append(_op).append(" \"") + .append(_patternStr.replace("\"", "\"\"")) + .append("\""); + if(isDebug) { + sb.append("(").append(_pattern).append(")"); + } } } diff --git a/src/test/java/com/healthmarketscience/jackcess/util/ExpressionatorTest.java b/src/test/java/com/healthmarketscience/jackcess/util/ExpressionatorTest.java index 137e400..039fb8a 100644 --- a/src/test/java/com/healthmarketscience/jackcess/util/ExpressionatorTest.java +++ b/src/test/java/com/healthmarketscience/jackcess/util/ExpressionatorTest.java @@ -29,53 +29,100 @@ public class ExpressionatorTest extends TestCase super(name); } + + public void testParseSimpleExprs() throws Exception + { + validateExpr("\"A\"", "{\"A\"}"); + + validateExpr("13", "{13}"); + + validateExpr("-42", "{-42}"); + + doTestSimpleBinOp("EBinaryOp", "+", "-", "*", "/", "\\", "^", "&", "Mod"); + doTestSimpleBinOp("ECompOp", "<", "<=", ">", ">=", "=", "<>"); + doTestSimpleBinOp("ELogicalOp", "And", "Or", "Eqv", "Xor"); + + for(String constStr : new String[]{"True", "False", "Null"}) { + validateExpr(constStr, "{" + constStr + "}"); + } + + validateExpr("[Field1]", "{[Field1]}"); + + validateExpr("[Table2].[Field3]", "{[Table2].[Field3]}"); + + validateExpr("Not \"A\"", "{Not {\"A\"}}"); + + validateExpr("-[Field1]", "{- {[Field1]}}"); + + validateExpr("\"A\" Is Null", "{{\"A\"} Is Null}"); + + validateExpr("\"A\" In (1,2,3)", "{{\"A\"} In ({1},{2},{3})}"); + + validateExpr("\"A\" Not Between 3 And 7", "{{\"A\"} Not Between {3} And {7}}"); + + validateExpr("(\"A\" Or \"B\")", "{({{\"A\"} Or {\"B\"}})}"); + + validateExpr("IIf(\"A\",42,False)", "{IIf({\"A\"},{42},{False})}"); + + validateExpr("\"A\" Like \"a*b\"", "{{\"A\"} Like \"a*b\"(a.*b)}"); + } + + private static void doTestSimpleBinOp(String opName, String... ops) throws Exception + { + for(String op : ops) { + validateExpr("\"A\" " + op + " \"B\"", + "<" + opName + ">{{\"A\"} " + op + + " {\"B\"}}"); + } + } + public void testOrderOfOperations() throws Exception { - Expressionator.Expr expr = Expressionator.parse( - Expressionator.Type.FIELD_VALIDATOR, "\"A\" Eqv \"B\"", null); - assertEquals("{{\"A\"} Eqv {\"B\"}}", - expr.toDebugString()); - - expr = Expressionator.parse( - Expressionator.Type.FIELD_VALIDATOR, "\"A\" Eqv \"B\" Xor \"C\"", null); - assertEquals("{{\"A\"} Eqv {{\"B\"} Xor {\"C\"}}}", - expr.toDebugString()); - - expr = Expressionator.parse( - Expressionator.Type.FIELD_VALIDATOR, "\"A\" Eqv \"B\" Xor \"C\" Or \"D\"", null); - assertEquals("{{\"A\"} Eqv {{\"B\"} Xor {{\"C\"} Or {\"D\"}}}}", - expr.toDebugString()); - - expr = Expressionator.parse( - Expressionator.Type.FIELD_VALIDATOR, "\"A\" Eqv \"B\" Xor \"C\" Or \"D\" And \"E\"", null); - assertEquals("{{\"A\"} Eqv {{\"B\"} Xor {{\"C\"} Or {{\"D\"} And {\"E\"}}}}}", - expr.toDebugString()); - - expr = Expressionator.parse( - Expressionator.Type.FIELD_VALIDATOR, "\"A\" Or \"B\" Or \"C\"", null); - assertEquals("{{{\"A\"} Or {\"B\"}} Or {\"C\"}}", - expr.toDebugString()); - - expr = Expressionator.parse( - Expressionator.Type.FIELD_VALIDATOR, "\"A\" & \"B\" Is Null", null); - assertEquals("{{{\"A\"} & {\"B\"}} Is Null}", - expr.toDebugString()); - - expr = Expressionator.parse( - Expressionator.Type.FIELD_VALIDATOR, "\"A\" Or \"B\" Is Null", null); - assertEquals("{{\"A\"} Or {{\"B\"} Is Null}}", - expr.toDebugString()); - - expr = Expressionator.parse( - Expressionator.Type.FIELD_VALIDATOR, "Not \"A\" & \"B\"", null); - assertEquals("{Not {{\"A\"} & {\"B\"}}}", - expr.toDebugString()); - - expr = Expressionator.parse( - Expressionator.Type.FIELD_VALIDATOR, "Not \"A\" Or \"B\"", null); - assertEquals("{{Not {\"A\"}} Or {\"B\"}}", - expr.toDebugString()); + validateExpr("\"A\" Eqv \"B\"", + "{{\"A\"} Eqv {\"B\"}}"); + + validateExpr("\"A\" Eqv \"B\" Xor \"C\"", + "{{\"A\"} Eqv {{\"B\"} Xor {\"C\"}}}"); + + validateExpr("\"A\" Eqv \"B\" Xor \"C\" Or \"D\"", + "{{\"A\"} Eqv {{\"B\"} Xor {{\"C\"} Or {\"D\"}}}}"); + + validateExpr("\"A\" Eqv \"B\" Xor \"C\" Or \"D\" And \"E\"", + "{{\"A\"} Eqv {{\"B\"} Xor {{\"C\"} Or {{\"D\"} And {\"E\"}}}}}"); + + validateExpr("\"A\" Or \"B\" Or \"C\"", + "{{{\"A\"} Or {\"B\"}} Or {\"C\"}}"); + + validateExpr("\"A\" & \"B\" Is Null", + "{{{\"A\"} & {\"B\"}} Is Null}"); + + validateExpr("\"A\" Or \"B\" Is Null", + "{{\"A\"} Or {{\"B\"} Is Null}}"); + validateExpr("Not \"A\" & \"B\"", + "{Not {{\"A\"} & {\"B\"}}}"); + validateExpr("Not \"A\" Or \"B\"", + "{{Not {\"A\"}} Or {\"B\"}}"); + + validateExpr("\"A\" + \"B\" Not Between 37 - 15 And 52 / 4", + "{{{\"A\"} + {\"B\"}} Not Between {{37} - {15}} And {{52} / {4}}}"); + + validateExpr("\"A\" + (\"B\" Not Between 37 - 15 And 52) / 4", + "{{\"A\"} + {{({{\"B\"} Not Between {{37} - {15}} And {52}})} / {4}}}"); + + + } + + private static void validateExpr(String exprStr, String debugStr) { + validateExpr(exprStr, debugStr, exprStr); + } + + private static void validateExpr(String exprStr, String debugStr, + String cleanStr) { + Expressionator.Expr expr = Expressionator.parse( + Expressionator.Type.FIELD_VALIDATOR, exprStr, null); + assertEquals(debugStr, expr.toDebugString()); + assertEquals(cleanStr, expr.toString()); } }