PowerShell lexer implemented by Tim Gerundt.

1 files changed, 111 insertions, 0 deletions

diff --git a/src/LexPowerShell.cxx b/src/LexPowerShell.cxx
new file mode 100644
index 000000000..77d192f7a
--- /dev/null
+++ b/src/LexPowerShell.cxx
@@ -0,0 +1,111 @@
+// Scintilla source code edit control
+/** @file LexPowerShell.cxx
+ ** Lexer for PowerShell scripts.
+ **/
+// Copyright 2008 by Tim Gerundt <tim@gerundt.de>
+// The License.txt file describes the conditions under which this software may be distributed.
+
+#include <stdlib.h>
+#include <string.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <stdarg.h>
+
+#include "Platform.h"
+
+#include "PropSet.h"
+#include "Accessor.h"
+#include "StyleContext.h"
+#include "KeyWords.h"
+#include "Scintilla.h"
+#include "SciLexer.h"
+
+#ifdef SCI_NAMESPACE
+using namespace Scintilla;
+#endif
+
+// Extended to accept accented characters
+static inline bool IsAWordChar(int ch) {
+	return ch >= 0x80 || isalnum(ch) || ch == '-';
+}
+
+static void ColourisePowerShellDoc(unsigned int startPos, int length, int initStyle,
+                           WordList *keywordlists[], Accessor &styler) {
+
+	WordList &keywords = *keywordlists[0];
+	WordList &keywords2 = *keywordlists[1];
+	WordList &keywords3 = *keywordlists[2];
+
+	styler.StartAt(startPos);
+
+	StyleContext sc(startPos, length, initStyle, styler);
+
+	for (; sc.More(); sc.Forward()) {
+
+		if (sc.state == SCE_POWERSHELL_COMMENT) {
+			if (sc.atLineEnd) {
+				sc.SetState(SCE_POWERSHELL_DEFAULT);
+			}
+		} else if (sc.state == SCE_POWERSHELL_STRING) {
+			// This is a doubles quotes string
+			if (sc.ch == '\"') {
+				sc.ForwardSetState(SCE_POWERSHELL_DEFAULT);
+			}
+		} else if (sc.state == SCE_POWERSHELL_CHARACTER) {
+			// This is a single quote string
+			if (sc.ch == '\'') {
+				sc.ForwardSetState(SCE_POWERSHELL_DEFAULT);
+			}
+		} else if (sc.state == SCE_POWERSHELL_NUMBER) {
+			if (!IsADigit(sc.ch)) {
+				sc.SetState(SCE_POWERSHELL_DEFAULT);
+			}
+		} else if (sc.state == SCE_POWERSHELL_VARIABLE) {
+			if (!IsAWordChar(sc.ch)) {
+				sc.SetState(SCE_POWERSHELL_DEFAULT);
+			}
+		} else if (sc.state == SCE_POWERSHELL_OPERATOR) {
+			if (!isoperator(static_cast<char>(sc.ch))) {
+				sc.SetState(SCE_POWERSHELL_DEFAULT);
+			}
+		} else if (sc.state == SCE_POWERSHELL_IDENTIFIER) {
+			if (!IsAWordChar(sc.ch)) {
+				char s[100];
+				sc.GetCurrentLowered(s, sizeof(s));
+
+				if (keywords.InList(s)) {
+					sc.ChangeState(SCE_POWERSHELL_KEYWORD);
+				} else if (keywords2.InList(s)) {
+					sc.ChangeState(SCE_POWERSHELL_CMDLET);
+				} else if (keywords3.InList(s)) {
+					sc.ChangeState(SCE_POWERSHELL_ALIAS);
+				}
+				sc.SetState(SCE_POWERSHELL_DEFAULT);
+			}
+		}
+
+		// Determine if a new state should be entered.
+		if (sc.state == SCE_POWERSHELL_DEFAULT) {
+			if (sc.ch == '#') {
+				sc.SetState(SCE_POWERSHELL_COMMENT);
+			} else if (sc.ch == '\"') {
+				sc.SetState(SCE_POWERSHELL_STRING);
+			} else if (sc.ch == '\'') {
+				sc.SetState(SCE_POWERSHELL_CHARACTER);
+			} else if (sc.ch == '$') {
+				sc.SetState(SCE_POWERSHELL_VARIABLE);
+			} else if (IsADigit(sc.ch) || (sc.ch == '.' && IsADigit(sc.chNext))) {
+				sc.SetState(SCE_POWERSHELL_NUMBER);
+			} else if (isoperator(static_cast<char>(sc.ch))) {
+				sc.SetState(SCE_POWERSHELL_OPERATOR);
+			} else if (IsAWordChar(sc.ch)) {
+				sc.SetState(SCE_POWERSHELL_IDENTIFIER);
+			}
+		}
+	}
+	sc.Complete();
+}
+
+
+LexerModule lmPowerShell(SCLEX_POWERSHELL, ColourisePowerShellDoc, "powershell");
+