Specman language support.

1 files changed, 286 insertions, 0 deletions

diff --git a/src/LexSpecman.cxx b/src/LexSpecman.cxx
new file mode 100644
index 000000000..bf5d639a1
--- /dev/null
+++ b/src/LexSpecman.cxx
@@ -0,0 +1,286 @@
+// Scintilla source code edit control
+/** @file LexSpecman.cxx
+ ** Lexer for Specman E language.
+ ** Written by Avi Yegudin, based on C++ lexer by Neil Hodgson
+ **/
+// Copyright 1998-2002 by Neil Hodgson <neilh@scintilla.org>
+// 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"
+
+
+static inline bool IsAWordChar(const int ch) {
+	return (ch < 0x80) && (isalnum(ch) || ch == '.' || ch == '_' || ch == '\'');
+}
+
+static inline bool IsANumberChar(const int ch) {
+	return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '\'');
+}
+
+static inline bool IsAWordStart(const int ch) {
+	return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '`');
+}
+
+static void ColouriseSpecmanDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
+                            Accessor &styler, bool caseSensitive) {
+
+	WordList &keywords = *keywordlists[0];
+	WordList &keywords2 = *keywordlists[1];
+	WordList &keywords3 = *keywordlists[2];
+	WordList &keywords4 = *keywordlists[3];
+
+	// Do not leak onto next line
+	if (initStyle == SCE_SN_STRINGEOL)
+		initStyle = SCE_SN_CODE;
+
+	int visibleChars = 0;
+
+	StyleContext sc(startPos, length, initStyle, styler);
+
+	for (; sc.More(); sc.Forward()) {
+
+		if (sc.atLineStart && (sc.state == SCE_SN_STRING)) {
+			// Prevent SCE_SN_STRINGEOL from leaking back to previous line
+			sc.SetState(SCE_SN_STRING);
+		}
+
+		// Handle line continuation generically.
+		if (sc.ch == '\\') {
+			if (sc.chNext == '\n' || sc.chNext == '\r') {
+				sc.Forward();
+				if (sc.ch == '\r' && sc.chNext == '\n') {
+					sc.Forward();
+				}
+				continue;
+			}
+		}
+
+		// Determine if the current state should terminate.
+		if (sc.state == SCE_SN_OPERATOR) {
+			sc.SetState(SCE_SN_CODE);
+		} else if (sc.state == SCE_SN_NUMBER) {
+			if (!IsANumberChar(sc.ch)) {
+				sc.SetState(SCE_SN_CODE);
+			}
+		} else if (sc.state == SCE_SN_IDENTIFIER) {
+			if (!IsAWordChar(sc.ch) || (sc.ch == '.')) {
+				char s[100];
+				if (caseSensitive) {
+					sc.GetCurrent(s, sizeof(s));
+				} else {
+					sc.GetCurrentLowered(s, sizeof(s));
+				}
+				if (keywords.InList(s)) {
+					sc.ChangeState(SCE_SN_WORD);
+				} else if (keywords2.InList(s)) {
+					sc.ChangeState(SCE_SN_WORD2);
+				} else if (keywords3.InList(s)) {
+                                        sc.ChangeState(SCE_SN_WORD3);
+				} else if (keywords4.InList(s)) {
+					sc.ChangeState(SCE_SN_USER);
+				}
+				sc.SetState(SCE_SN_CODE);
+			}
+		} else if (sc.state == SCE_SN_PREPROCESSOR) {
+                        if (IsASpace(sc.ch)) {
+                                sc.SetState(SCE_SN_CODE);
+                        }
+		} else if (sc.state == SCE_SN_DEFAULT) {
+			if (sc.Match('<', '\'')) {
+				sc.Forward();
+				sc.ForwardSetState(SCE_SN_CODE);
+			}
+		} else if (sc.state == SCE_SN_COMMENTLINE || sc.state == SCE_SN_COMMENTLINEBANG) {
+			if (sc.atLineEnd) {
+				sc.SetState(SCE_SN_CODE);
+				visibleChars = 0;
+			}
+		} else if (sc.state == SCE_SN_STRING) {
+			if (sc.ch == '\\') {
+				if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
+					sc.Forward();
+				}
+			} else if (sc.ch == '\"') {
+				sc.ForwardSetState(SCE_SN_CODE);
+			} else if (sc.atLineEnd) {
+				sc.ChangeState(SCE_SN_STRINGEOL);
+				sc.ForwardSetState(SCE_SN_CODE);
+				visibleChars = 0;
+			}
+		} else if (sc.state == SCE_SN_SIGNAL) {
+			if (sc.atLineEnd) {
+				sc.ChangeState(SCE_SN_STRINGEOL);
+				sc.ForwardSetState(SCE_SN_CODE);
+				visibleChars = 0;
+			} else if (sc.ch == '\\') {
+				if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
+					sc.Forward();
+				}
+			} else if (sc.ch == '\'') {
+				sc.ForwardSetState(SCE_SN_CODE);
+			}
+		} else if (sc.state == SCE_SN_REGEXTAG) {
+			if (!IsADigit(sc.ch)) {
+				sc.SetState(SCE_SN_CODE);
+			}
+		}
+
+		// Determine if a new state should be entered.
+		if (sc.state == SCE_SN_CODE) {
+			if (sc.ch == '$' && IsADigit(sc.chNext)) {
+				sc.SetState(SCE_SN_REGEXTAG);
+                                sc.Forward();
+			} else if (IsADigit(sc.ch)) {
+                                sc.SetState(SCE_SN_NUMBER);
+			} else if (IsAWordStart(sc.ch)) {
+				sc.SetState(SCE_SN_IDENTIFIER);
+			} else if (sc.Match('\'', '>')) {
+                                sc.SetState(SCE_SN_DEFAULT);
+				sc.Forward();	// Eat the * so it isn't used for the end of the comment
+			} else if (sc.Match('/', '/')) {
+				if (sc.Match("//!"))	// Nice to have a different comment style
+					sc.SetState(SCE_SN_COMMENTLINEBANG);
+				else
+					sc.SetState(SCE_SN_COMMENTLINE);
+			} else if (sc.Match('-', '-')) {
+				if (sc.Match("--!"))	// Nice to have a different comment style
+					sc.SetState(SCE_SN_COMMENTLINEBANG);
+				else
+					sc.SetState(SCE_SN_COMMENTLINE);
+			} else if (sc.ch == '\"') {
+				sc.SetState(SCE_SN_STRING);
+			} else if (sc.ch == '\'') {
+				sc.SetState(SCE_SN_SIGNAL);
+			} else if (sc.ch == '#' && visibleChars == 0) {
+				// Preprocessor commands are alone on their line
+				sc.SetState(SCE_SN_PREPROCESSOR);
+				// Skip whitespace between # and preprocessor word
+				do {
+					sc.Forward();
+				} while ((sc.ch == ' ' || sc.ch == '\t') && sc.More());
+				if (sc.atLineEnd) {
+					sc.SetState(SCE_SN_CODE);
+				}
+			} else if (isoperator(static_cast<char>(sc.ch)) || sc.ch == '@') {
+				sc.SetState(SCE_SN_OPERATOR);
+			}
+		}
+
+		if (sc.atLineEnd) {
+			// Reset states to begining of colourise so no surprises
+			// if different sets of lines lexed.
+			visibleChars = 0;
+		}
+		if (!IsASpace(sc.ch)) {
+			visibleChars++;
+		}
+	}
+	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 FoldNoBoxSpecmanDoc(unsigned int startPos, int length, int,
+                            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;
+	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 (foldComment && (style == SCE_SN_COMMENTLINE)) {
+			if (((ch == '/') && (chNext == '/')) ||
+                            ((ch == '-') && (chNext == '-'))) {
+				char chNext2 = styler.SafeGetCharAt(i + 2);
+				if (chNext2 == '{') {
+					levelNext++;
+				} else if (chNext2 == '}') {
+					levelNext--;
+				}
+			}
+		}
+		if (style == SCE_SN_OPERATOR) {
+			if (ch == '{') {
+				// Measure the minimum before a '{' to allow
+				// folding on "} else {"
+				if (levelMinCurrent > levelNext) {
+					levelMinCurrent = levelNext;
+				}
+				levelNext++;
+			} else if (ch == '}') {
+				levelNext--;
+			}
+		}
+		if (atEOL) {
+			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;
+		}
+		if (!isspacechar(ch))
+			visibleChars++;
+	}
+}
+
+static void FoldSpecmanDoc(unsigned int startPos, int length, int initStyle, WordList *[],
+                       Accessor &styler) {
+	FoldNoBoxSpecmanDoc(startPos, length, initStyle, styler);
+}
+
+static const char * const specmanWordLists[] = {
+            "Primary keywords and identifiers",
+            "Secondary keywords and identifiers",
+            "Sequence keywords and identifiers",
+            "User defined keywords and identifiers",
+            "Unused",
+            0,
+        };
+
+static void ColouriseSpecmanDocSensitive(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
+                                     Accessor &styler) {
+	ColouriseSpecmanDoc(startPos, length, initStyle, keywordlists, styler, true);
+}
+
+
+LexerModule lmSpecman(SCLEX_SPECMAN, ColouriseSpecmanDocSensitive, "specman", FoldSpecmanDoc, specmanWordLists);