291 lines
9.1 KiB
C++
291 lines
9.1 KiB
C++
// Scintilla source code edit control
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/** @file LexSpecman.cxx
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** Lexer for Specman E language.
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** Written by Avi Yegudin, based on C++ lexer by Neil Hodgson
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**/
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// Copyright 1998-2002 by Neil Hodgson <neilh@scintilla.org>
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// The License.txt file describes the conditions under which this software may be distributed.
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#include <stdlib.h>
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#include <string.h>
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#include <stdio.h>
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#include <stdarg.h>
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#include <assert.h>
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#include <ctype.h>
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#include "ILexer.h"
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#include "Scintilla.h"
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#include "SciLexer.h"
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#include "WordList.h"
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#include "LexAccessor.h"
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#include "Accessor.h"
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#include "StyleContext.h"
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#include "CharacterSet.h"
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#include "LexerModule.h"
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using namespace Scintilla;
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static inline bool IsAWordChar(const int ch) {
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return (ch < 0x80) && (isalnum(ch) || ch == '.' || ch == '_' || ch == '\'');
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}
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static inline bool IsANumberChar(const int ch) {
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return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '\'');
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}
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static inline bool IsAWordStart(const int ch) {
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return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '`');
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}
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static void ColouriseSpecmanDoc(Sci_PositionU startPos, Sci_Position length, int initStyle, WordList *keywordlists[],
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Accessor &styler, bool caseSensitive) {
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WordList &keywords = *keywordlists[0];
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WordList &keywords2 = *keywordlists[1];
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WordList &keywords3 = *keywordlists[2];
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WordList &keywords4 = *keywordlists[3];
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// Do not leak onto next line
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if (initStyle == SCE_SN_STRINGEOL)
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initStyle = SCE_SN_CODE;
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int visibleChars = 0;
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StyleContext sc(startPos, length, initStyle, styler);
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for (; sc.More(); sc.Forward()) {
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if (sc.atLineStart && (sc.state == SCE_SN_STRING)) {
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// Prevent SCE_SN_STRINGEOL from leaking back to previous line
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sc.SetState(SCE_SN_STRING);
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}
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// Handle line continuation generically.
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if (sc.ch == '\\') {
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if (sc.chNext == '\n' || sc.chNext == '\r') {
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sc.Forward();
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if (sc.ch == '\r' && sc.chNext == '\n') {
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sc.Forward();
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}
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continue;
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}
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}
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// Determine if the current state should terminate.
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if (sc.state == SCE_SN_OPERATOR) {
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sc.SetState(SCE_SN_CODE);
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} else if (sc.state == SCE_SN_NUMBER) {
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if (!IsANumberChar(sc.ch)) {
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sc.SetState(SCE_SN_CODE);
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}
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} else if (sc.state == SCE_SN_IDENTIFIER) {
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if (!IsAWordChar(sc.ch) || (sc.ch == '.')) {
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char s[100];
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if (caseSensitive) {
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sc.GetCurrent(s, sizeof(s));
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} else {
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sc.GetCurrentLowered(s, sizeof(s));
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}
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if (keywords.InList(s)) {
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sc.ChangeState(SCE_SN_WORD);
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} else if (keywords2.InList(s)) {
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sc.ChangeState(SCE_SN_WORD2);
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} else if (keywords3.InList(s)) {
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sc.ChangeState(SCE_SN_WORD3);
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} else if (keywords4.InList(s)) {
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sc.ChangeState(SCE_SN_USER);
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}
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sc.SetState(SCE_SN_CODE);
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}
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} else if (sc.state == SCE_SN_PREPROCESSOR) {
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if (IsASpace(sc.ch)) {
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sc.SetState(SCE_SN_CODE);
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}
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} else if (sc.state == SCE_SN_DEFAULT) {
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if (sc.Match('<', '\'')) {
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sc.Forward();
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sc.ForwardSetState(SCE_SN_CODE);
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}
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} else if (sc.state == SCE_SN_COMMENTLINE || sc.state == SCE_SN_COMMENTLINEBANG) {
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if (sc.atLineEnd) {
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sc.SetState(SCE_SN_CODE);
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visibleChars = 0;
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}
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} else if (sc.state == SCE_SN_STRING) {
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if (sc.ch == '\\') {
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if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
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sc.Forward();
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}
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} else if (sc.ch == '\"') {
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sc.ForwardSetState(SCE_SN_CODE);
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} else if (sc.atLineEnd) {
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sc.ChangeState(SCE_SN_STRINGEOL);
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sc.ForwardSetState(SCE_SN_CODE);
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visibleChars = 0;
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}
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} else if (sc.state == SCE_SN_SIGNAL) {
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if (sc.atLineEnd) {
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sc.ChangeState(SCE_SN_STRINGEOL);
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sc.ForwardSetState(SCE_SN_CODE);
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visibleChars = 0;
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} else if (sc.ch == '\\') {
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if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
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sc.Forward();
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}
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} else if (sc.ch == '\'') {
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sc.ForwardSetState(SCE_SN_CODE);
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}
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} else if (sc.state == SCE_SN_REGEXTAG) {
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if (!IsADigit(sc.ch)) {
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sc.SetState(SCE_SN_CODE);
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}
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}
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// Determine if a new state should be entered.
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if (sc.state == SCE_SN_CODE) {
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if (sc.ch == '$' && IsADigit(sc.chNext)) {
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sc.SetState(SCE_SN_REGEXTAG);
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sc.Forward();
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} else if (IsADigit(sc.ch)) {
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sc.SetState(SCE_SN_NUMBER);
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} else if (IsAWordStart(sc.ch)) {
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sc.SetState(SCE_SN_IDENTIFIER);
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} else if (sc.Match('\'', '>')) {
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sc.SetState(SCE_SN_DEFAULT);
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sc.Forward(); // Eat the * so it isn't used for the end of the comment
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} else if (sc.Match('/', '/')) {
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if (sc.Match("//!")) // Nice to have a different comment style
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sc.SetState(SCE_SN_COMMENTLINEBANG);
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else
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sc.SetState(SCE_SN_COMMENTLINE);
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} else if (sc.Match('-', '-')) {
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if (sc.Match("--!")) // Nice to have a different comment style
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sc.SetState(SCE_SN_COMMENTLINEBANG);
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else
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sc.SetState(SCE_SN_COMMENTLINE);
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} else if (sc.ch == '\"') {
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sc.SetState(SCE_SN_STRING);
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} else if (sc.ch == '\'') {
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sc.SetState(SCE_SN_SIGNAL);
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} else if (sc.ch == '#' && visibleChars == 0) {
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// Preprocessor commands are alone on their line
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sc.SetState(SCE_SN_PREPROCESSOR);
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// Skip whitespace between # and preprocessor word
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do {
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sc.Forward();
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} while ((sc.ch == ' ' || sc.ch == '\t') && sc.More());
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if (sc.atLineEnd) {
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sc.SetState(SCE_SN_CODE);
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}
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} else if (isoperator(static_cast<char>(sc.ch)) || sc.ch == '@') {
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sc.SetState(SCE_SN_OPERATOR);
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}
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}
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if (sc.atLineEnd) {
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// Reset states to begining of colourise so no surprises
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// if different sets of lines lexed.
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visibleChars = 0;
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}
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if (!IsASpace(sc.ch)) {
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visibleChars++;
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}
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}
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sc.Complete();
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}
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// Store both the current line's fold level and the next lines in the
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// level store to make it easy to pick up with each increment
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// and to make it possible to fiddle the current level for "} else {".
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static void FoldNoBoxSpecmanDoc(Sci_PositionU startPos, Sci_Position length, int,
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Accessor &styler) {
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bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
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bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
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bool foldAtElse = styler.GetPropertyInt("fold.at.else", 0) != 0;
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Sci_PositionU endPos = startPos + length;
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int visibleChars = 0;
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Sci_Position lineCurrent = styler.GetLine(startPos);
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int levelCurrent = SC_FOLDLEVELBASE;
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if (lineCurrent > 0)
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levelCurrent = styler.LevelAt(lineCurrent-1) >> 16;
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int levelMinCurrent = levelCurrent;
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int levelNext = levelCurrent;
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char chNext = styler[startPos];
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int styleNext = styler.StyleAt(startPos);
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int style;
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for (Sci_PositionU i = startPos; i < endPos; i++) {
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char ch = chNext;
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chNext = styler.SafeGetCharAt(i + 1);
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//int stylePrev = style;
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style = styleNext;
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styleNext = styler.StyleAt(i + 1);
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bool atEOL = (ch == '\r' && chNext != '\n') || (ch == '\n');
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if (foldComment && (style == SCE_SN_COMMENTLINE)) {
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if (((ch == '/') && (chNext == '/')) ||
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((ch == '-') && (chNext == '-'))) {
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char chNext2 = styler.SafeGetCharAt(i + 2);
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if (chNext2 == '{') {
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levelNext++;
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} else if (chNext2 == '}') {
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levelNext--;
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}
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}
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}
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if (style == SCE_SN_OPERATOR) {
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if (ch == '{') {
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// Measure the minimum before a '{' to allow
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// folding on "} else {"
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if (levelMinCurrent > levelNext) {
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levelMinCurrent = levelNext;
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}
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levelNext++;
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} else if (ch == '}') {
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levelNext--;
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}
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}
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if (atEOL) {
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int levelUse = levelCurrent;
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if (foldAtElse) {
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levelUse = levelMinCurrent;
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}
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int lev = levelUse | levelNext << 16;
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if (visibleChars == 0 && foldCompact)
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lev |= SC_FOLDLEVELWHITEFLAG;
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if (levelUse < levelNext)
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lev |= SC_FOLDLEVELHEADERFLAG;
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if (lev != styler.LevelAt(lineCurrent)) {
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styler.SetLevel(lineCurrent, lev);
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}
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lineCurrent++;
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levelCurrent = levelNext;
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levelMinCurrent = levelCurrent;
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visibleChars = 0;
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}
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if (!isspacechar(ch))
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visibleChars++;
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}
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}
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static void FoldSpecmanDoc(Sci_PositionU startPos, Sci_Position length, int initStyle, WordList *[],
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Accessor &styler) {
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FoldNoBoxSpecmanDoc(startPos, length, initStyle, styler);
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}
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static const char * const specmanWordLists[] = {
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"Primary keywords and identifiers",
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"Secondary keywords and identifiers",
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"Sequence keywords and identifiers",
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"User defined keywords and identifiers",
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"Unused",
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0,
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};
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static void ColouriseSpecmanDocSensitive(Sci_PositionU startPos, Sci_Position length, int initStyle, WordList *keywordlists[],
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Accessor &styler) {
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ColouriseSpecmanDoc(startPos, length, initStyle, keywordlists, styler, true);
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}
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LexerModule lmSpecman(SCLEX_SPECMAN, ColouriseSpecmanDocSensitive, "specman", FoldSpecmanDoc, specmanWordLists);
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