Add the capability to parse indented text.

git-svn-id: https://piraha-peg.googlecode.com/svn/trunk@99 1a70d7c6-ffe7-ef14-4583-3269c1a2e543

.classpath

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+	<classpathentry kind="src" path="src"/>
+	<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.6"/>
+	<classpathentry kind="src" path="/util"/>
+	<classpathentry kind="output" path="bin"/>
+</classpath>

.settings/org.eclipse.jdt.core.prefs

@@ -0,0 +1,12 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.methodParameters=do not generate
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.7
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=1.7
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.source=1.7

src/edu/lsu/cct/piraha/Matcher.java

@@ -173,7 +173,12 @@ public void addPackRat(PackRat pr,boolean b, int after,
 		pr.after = after;
 	}
 
+	// data for white space patterns
+	public StringBuilder white = new StringBuilder();
+	public List<Integer> whiteThresholds = new ArrayList<Integer>();
+
 	Expected expected;
+
 	public void expected(Expected ex) {
 		if(textPos == maxTextPos || ex.epos == maxTextPos) {
 			ex.build(maxTextPos);

src/edu/lsu/cct/piraha/ReParse.java

@@ -419,6 +419,12 @@ Pattern compile(Group g,boolean ignCase,Grammar gram) {
 			String lookup = g.group(0).substring();
 			if("brk".equals(lookup))
 				return new Break();
+			else if("OpenWhite".equals(lookup))
+				return new OpenWhite();
+			else if("BodyWhite".equals(lookup))
+				return new BodyWhite();
+			else if("CloseWhite".equals(lookup))
+				return new CloseWhite();
 			return new Lookup(lookup, gram);
 		} else if("nothing".equals(pn)) {
 			return new Nothing();

src/edu/lsu/cct/piraha/examples/Test.java

@@ -149,6 +149,12 @@ public static void main(String[] args) throws Exception {
 		m = g.matcher("vector","1+2,(8+3)*9-4,4,9+7");
 		assert(m.matches());
 
+		g.compile("eol", "\n");
+		g.compile("line","line");
+		g.compile("line_eol","{line}{eol}");
+		m = g.matcher("line_eol","line\n");
+		assert(m.matches());
+
 		test("[\\a-c]+","abab",4);
 		test("[a-\\c]+","abab",4);
 		test("[\\a-\\c]+","acb",3);
@@ -164,6 +170,10 @@ public static void main(String[] args) throws Exception {
 		test("[^ \t\r\n\b]+","abc",3);
 		test("(?i:ab(c|g)ef)","ABCEF",5);
 		test("[0-67-9]+","1234",4);
+		test("{OpenWhite}","   ",3);
+		test("{OpenWhite}","",-1);
+		test("{OpenWhite}\n{BodyWhite}"," \n ",3);
+		test("{OpenWhite}\n{BodyWhite}\n{CloseWhite}[ \t]*","  \n  \nx",6);
 
 		g = new Grammar();
 		g.compile("import", "import");