diff options
Diffstat (limited to 'lexers/LexPowerShell.cxx')
| -rw-r--r-- | lexers/LexPowerShell.cxx | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/lexers/LexPowerShell.cxx b/lexers/LexPowerShell.cxx new file mode 100644 index 000000000..f2014ca8d --- /dev/null +++ b/lexers/LexPowerShell.cxx @@ -0,0 +1,198 @@ +// 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]; + WordList &keywords4 = *keywordlists[3]; + WordList &keywords5 = *keywordlists[4]; + + 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_COMMENTSTREAM) { + if (sc.ch == '>' && sc.chPrev == '#') { + sc.ForwardSetState(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); + } else if (keywords4.InList(s)) { + sc.ChangeState(SCE_POWERSHELL_FUNCTION); + } else if (keywords5.InList(s)) { + sc.ChangeState(SCE_POWERSHELL_USER1); + } + 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.chNext == '#') { + sc.SetState(SCE_POWERSHELL_COMMENTSTREAM); + } 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(); +} + +// Store both the current line's fold level and the next lines in the +// level store to make it easy to pick up with each increment +// and to make it possible to fiddle the current level for "} else {". +static void FoldPowerShellDoc(unsigned int startPos, int length, int initStyle, + WordList *[], Accessor &styler) { + bool foldComment = styler.GetPropertyInt("fold.comment") != 0; + bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0; + bool foldAtElse = styler.GetPropertyInt("fold.at.else", 0) != 0; + unsigned int endPos = startPos + length; + int visibleChars = 0; + int lineCurrent = styler.GetLine(startPos); + int levelCurrent = SC_FOLDLEVELBASE; + if (lineCurrent > 0) + levelCurrent = styler.LevelAt(lineCurrent-1) >> 16; + int levelMinCurrent = levelCurrent; + int levelNext = levelCurrent; + char chNext = styler[startPos]; + int styleNext = styler.StyleAt(startPos); + int style = initStyle; + for (unsigned int i = startPos; i < endPos; i++) { + char ch = chNext; + chNext = styler.SafeGetCharAt(i + 1); + int stylePrev = style; + style = styleNext; + styleNext = styler.StyleAt(i + 1); + bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n'); + if (style == SCE_POWERSHELL_OPERATOR) { + if (ch == '{') { + // Measure the minimum before a '{' to allow + // folding on "} else {" + if (levelMinCurrent > levelNext) { + levelMinCurrent = levelNext; + } + levelNext++; + } else if (ch == '}') { + levelNext--; + } + } else if (foldComment && style == SCE_POWERSHELL_COMMENTSTREAM) { + if (stylePrev != SCE_POWERSHELL_COMMENTSTREAM) { + levelNext++; + } else if (styleNext != SCE_POWERSHELL_COMMENTSTREAM) { + levelNext--; + } + } + if (!IsASpace(ch)) + visibleChars++; + if (atEOL || (i == endPos-1)) { + int levelUse = levelCurrent; + if (foldAtElse) { + levelUse = levelMinCurrent; + } + int lev = levelUse | levelNext << 16; + if (visibleChars == 0 && foldCompact) + lev |= SC_FOLDLEVELWHITEFLAG; + if (levelUse < levelNext) + lev |= SC_FOLDLEVELHEADERFLAG; + if (lev != styler.LevelAt(lineCurrent)) { + styler.SetLevel(lineCurrent, lev); + } + lineCurrent++; + levelCurrent = levelNext; + levelMinCurrent = levelCurrent; + visibleChars = 0; + } + } +} + +static const char * const powershellWordLists[] = { + "Commands", + "Cmdlets", + "Aliases", + "Functions", + "User1", + 0 +}; + +LexerModule lmPowerShell(SCLEX_POWERSHELL, ColourisePowerShellDoc, "powershell", FoldPowerShellDoc, powershellWordLists); + |