From b0cefc0f3b758a73ec7e30677f9f603400d9dc22 Mon Sep 17 00:00:00 2001
From: don bright <hugh.m.bright@gmail.com>
Date: Tue, 8 Jan 2013 21:15:14 -0600
Subject: merge, by hand, Christopher Olah's syntax highlighter code


diff --git a/src/highlighter.cc b/src/highlighter.cc
index ca4b4cf..6e51ecc 100644
--- a/src/highlighter.cc
+++ b/src/highlighter.cc
@@ -24,16 +24,103 @@
  *
  */
 
+// Syntax Highlight code by Chris Olah
+
 #include "highlighter.h"
 #include "parsersettings.h" // extern int parser_error_pos;
 
-Highlighter::Highlighter(QTextDocument *parent)
+Highlighter::Highlighter(QTextDocument *parent, mode_e mode)
 		: QSyntaxHighlighter(parent)
 {
+	this->mode = mode;
+	operators << "!" << "&&" << "||" << "+" << "-" << "*" << "/" << "%" << "!" << "#" << ";";
+	KeyWords << "for" << "intersection_for" << "if" << "assign"
+		<< "module" << "function"
+		<< "$children" << "child" << "$fn" << "$fa" << "$fb"     // Lump special variables in here
+		<< "union" << "intersection" << "difference" << "render"; //Lump CSG in here
+	Primitives3D << "cube" << "cylinder" << "sphere" << "polyhedron";
+	Primitives2D << "square" << "polygon" << "circle";
+	Transforms << "scale" << "translate" << "rotate" << "multmatrix" << "color"
+		<< "linear_extrude" << "rotate_extrude"; // Lump extrudes in here.
+	Imports << "include" << "use" << "import_stl";
+
+	//this->OperatorStyle.setForeground
+	KeyWordStyle.setForeground(Qt::darkGreen);
+	TransformStyle.setForeground(Qt::darkGreen);
+	PrimitiveStyle3D.setForeground(Qt::darkBlue);
+	PrimitiveStyle2D.setForeground(Qt::blue);
+	ImportStyle.setForeground(Qt::darkYellow);
+	QuoteStyle.setForeground(Qt::darkMagenta);
+	CommentStyle.setForeground(Qt::darkCyan);
+	ErrorStyle.setForeground(Qt::red);
 }
 
 void Highlighter::highlightBlock(const QString &text)
 {
+	if ( mode == NORMAL_MODE) {
+	state_e state = (state_e) previousBlockState();
+	//Key words and Primitives
+	QStringList::iterator it;
+
+	for (it = KeyWords.begin(); it != KeyWords.end(); ++it){
+		for (int i = 0; i < text.count(*it); ++i){
+			setFormat(text.indexOf(*it),it->size(),KeyWordStyle);
+		}
+	}
+	for (it = Primitives3D.begin(); it != Primitives3D.end(); ++it){
+		for (int i = 0; i < text.count(*it); ++i){
+			setFormat(text.indexOf(*it),it->size(),PrimitiveStyle3D);
+		}
+	}
+	for (it = Primitives2D.begin(); it != Primitives2D.end(); ++it){
+		for (int i = 0; i < text.count(*it); ++i){
+			setFormat(text.indexOf(*it),it->size(),PrimitiveStyle2D);
+		}
+	}
+	for (it = Transforms.begin(); it != Transforms.end(); ++it){
+		for (int i = 0; i < text.count(*it); ++i){
+			setFormat(text.indexOf(*it),it->size(),TransformStyle);
+		}
+	}
+	for (it = Imports.begin(); it != Imports.end(); ++it){
+		for (int i = 0; i < text.count(*it); ++i){
+			setFormat(text.indexOf(*it),it->size(),ImportStyle);
+		}
+	}
+
+	// Quoting and Comments.
+	for (int n = 0; n < text.size(); ++n){
+		if (state == NORMAL){
+			if (text[n] == '"'){
+				state = QUOTE;
+				setFormat(n,1,QuoteStyle);
+			} else if (text[n] == '/'){
+				if (text[n+1] == '/'){
+					setFormat(n,text.size(),CommentStyle);
+					break;
+				} else if (text[n+1] == '*'){
+					setFormat(n++,2,CommentStyle);
+					state = COMMENT;
+				}
+			}
+		} else if (state == QUOTE){
+			setFormat(n,1,QuoteStyle);
+			if (text[n] == '"' && text[n-1] != '\\')
+				state = NORMAL;
+		} else if (state == COMMENT){
+			setFormat(n,1,CommentStyle);
+			if (text[n] == '*' && text[n+1] == '/'){
+				setFormat(++n,1,CommentStyle);
+				state = NORMAL;
+			}
+		}
+	}
+
+	} // not ErrorMode (syntax highlighting)
+
+
+	// Errors
+	else if (mode == ERROR_MODE) {
 	int n = previousBlockState();
 	if (n < 0)
 		n = 0;
@@ -49,5 +136,6 @@ void Highlighter::highlightBlock(const QString &text)
 		setFormat(parser_error_pos - n, 1, style);
 #endif
 	}
+	} // if errormode
 }
 
diff --git a/src/highlighter.h b/src/highlighter.h
index 2eead6d..a6e2dc3 100644
--- a/src/highlighter.h
+++ b/src/highlighter.h
@@ -6,7 +6,26 @@
 class Highlighter : public QSyntaxHighlighter
 {
 public:
-	Highlighter(QTextDocument *parent);
+	enum state_e {NORMAL=-1,QUOTE,COMMENT};
+	enum mode_e {NORMAL_MODE, ERROR_MODE};
+	mode_e mode;
+
+	QStringList operators;
+	QStringList KeyWords;
+	QStringList Primitives3D;
+	QStringList Primitives2D;
+	QStringList Transforms;
+	QStringList Imports;
+	QTextCharFormat ErrorStyle;
+	QTextCharFormat OperatorStyle;
+	QTextCharFormat CommentStyle;
+	QTextCharFormat QuoteStyle;
+	QTextCharFormat KeyWordStyle;
+	QTextCharFormat PrimitiveStyle3D;
+	QTextCharFormat PrimitiveStyle2D;
+	QTextCharFormat TransformStyle;
+	QTextCharFormat ImportStyle;
+	Highlighter(QTextDocument *parent, mode_e mode);
 	void highlightBlock(const QString &text);
 };
 
diff --git a/src/mainwin.cc b/src/mainwin.cc
index 72254a3..af4a532 100644
--- a/src/mainwin.cc
+++ b/src/mainwin.cc
@@ -180,7 +180,7 @@ MainWindow::MainWindow(const QString &filename)
 	fps = 0;
 	fsteps = 1;
 
-	highlighter = NULL;
+	highlighter = new Highlighter(editor->document(), Highlighter::NORMAL_MODE);
 	editor->setTabStopWidth(30);
 	editor->setLineWrapping(true); // Not designable
 
@@ -1036,18 +1036,22 @@ bool MainWindow::compileTopLevelDocument(bool reload)
 															QFileInfo(this->fileName).absolutePath().toLocal8Bit(), 
 															false);
 
-		// Error highlighting
-		delete this->highlighter;
-		this->highlighter = NULL;
+		// Syntax & Error highlighting
 		
 		if (!this->root_module) {
-			this->highlighter = new Highlighter(editor->document());
+			if (highlighter->mode==Highlighter::NORMAL_MODE) {
+				delete this->highlighter;
+				highlighter = new Highlighter(editor->document(), Highlighter::ERROR_MODE);
+			}
 
 			if (!animate_panel->isVisible()) {
 				QTextCursor cursor = editor->textCursor();
 				cursor.setPosition(parser_error_pos);
 				editor->setTextCursor(cursor);
 			}
+		} else if (highlighter->mode==Highlighter::ERROR_MODE) {
+			delete this->highlighter;
+			this->highlighter = new Highlighter(editor->document(), Highlighter::NORMAL_MODE);
 		}
 	}
 
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