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-rw-r--r--src/LexVerilog.cxx330
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diff --git a/src/LexVerilog.cxx b/src/LexVerilog.cxx
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-// Scintilla source code edit control
-/** @file LexVerilog.cxx
- ** Lexer for Verilog.
- ** 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"
-
-#ifdef SCI_NAMESPACE
-using namespace Scintilla;
-#endif
-
-static inline bool IsAWordChar(const int ch) {
- return (ch < 0x80) && (isalnum(ch) || ch == '.' || ch == '_' || ch == '\'');
-}
-
-static inline bool IsAWordStart(const int ch) {
- return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '$');
-}
-
-static void ColouriseVerilogDoc(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];
-
- // Do not leak onto next line
- if (initStyle == SCE_V_STRINGEOL)
- initStyle = SCE_V_DEFAULT;
-
- StyleContext sc(startPos, length, initStyle, styler);
-
- for (; sc.More(); sc.Forward()) {
-
- if (sc.atLineStart && (sc.state == SCE_V_STRING)) {
- // Prevent SCE_V_STRINGEOL from leaking back to previous line
- sc.SetState(SCE_V_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_V_OPERATOR) {
- sc.SetState(SCE_V_DEFAULT);
- } else if (sc.state == SCE_V_NUMBER) {
- if (!IsAWordChar(sc.ch)) {
- sc.SetState(SCE_V_DEFAULT);
- }
- } else if (sc.state == SCE_V_IDENTIFIER) {
- if (!IsAWordChar(sc.ch) || (sc.ch == '.')) {
- char s[100];
- sc.GetCurrent(s, sizeof(s));
- if (keywords.InList(s)) {
- sc.ChangeState(SCE_V_WORD);
- } else if (keywords2.InList(s)) {
- sc.ChangeState(SCE_V_WORD2);
- } else if (keywords3.InList(s)) {
- sc.ChangeState(SCE_V_WORD3);
- } else if (keywords4.InList(s)) {
- sc.ChangeState(SCE_V_USER);
- }
- sc.SetState(SCE_V_DEFAULT);
- }
- } else if (sc.state == SCE_V_PREPROCESSOR) {
- if (!IsAWordChar(sc.ch)) {
- sc.SetState(SCE_V_DEFAULT);
- }
- } else if (sc.state == SCE_V_COMMENT) {
- if (sc.Match('*', '/')) {
- sc.Forward();
- sc.ForwardSetState(SCE_V_DEFAULT);
- }
- } else if (sc.state == SCE_V_COMMENTLINE || sc.state == SCE_V_COMMENTLINEBANG) {
- if (sc.atLineStart) {
- sc.SetState(SCE_V_DEFAULT);
- }
- } else if (sc.state == SCE_V_STRING) {
- if (sc.ch == '\\') {
- if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
- sc.Forward();
- }
- } else if (sc.ch == '\"') {
- sc.ForwardSetState(SCE_V_DEFAULT);
- } else if (sc.atLineEnd) {
- sc.ChangeState(SCE_V_STRINGEOL);
- sc.ForwardSetState(SCE_V_DEFAULT);
- }
- }
-
- // Determine if a new state should be entered.
- if (sc.state == SCE_V_DEFAULT) {
- if (IsADigit(sc.ch) || (sc.ch == '\'') || (sc.ch == '.' && IsADigit(sc.chNext))) {
- sc.SetState(SCE_V_NUMBER);
- } else if (IsAWordStart(sc.ch)) {
- sc.SetState(SCE_V_IDENTIFIER);
- } else if (sc.Match('/', '*')) {
- sc.SetState(SCE_V_COMMENT);
- 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_V_COMMENTLINEBANG);
- else
- sc.SetState(SCE_V_COMMENTLINE);
- } else if (sc.ch == '\"') {
- sc.SetState(SCE_V_STRING);
- } else if (sc.ch == '`') {
- sc.SetState(SCE_V_PREPROCESSOR);
- // Skip whitespace between ` and preprocessor word
- do {
- sc.Forward();
- } while ((sc.ch == ' ' || sc.ch == '\t') && sc.More());
- if (sc.atLineEnd) {
- sc.SetState(SCE_V_DEFAULT);
- }
- } else if (isoperator(static_cast<char>(sc.ch)) || sc.ch == '@' || sc.ch == '#') {
- sc.SetState(SCE_V_OPERATOR);
- }
- }
- }
- sc.Complete();
-}
-
-static bool IsStreamCommentStyle(int style) {
- return style == SCE_V_COMMENT;
-}
-
-static bool IsCommentLine(int line, Accessor &styler) {
- int pos = styler.LineStart(line);
- int eolPos = styler.LineStart(line + 1) - 1;
- for (int i = pos; i < eolPos; i++) {
- char ch = styler[i];
- char chNext = styler.SafeGetCharAt(i + 1);
- int style = styler.StyleAt(i);
- if (ch == '/' && chNext == '/' &&
- (style == SCE_V_COMMENTLINE || style == SCE_V_COMMENTLINEBANG)) {
- return true;
- } else if (!IsASpaceOrTab(ch)) {
- return false;
- }
- }
- return false;
-}
-// 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 FoldNoBoxVerilogDoc(unsigned int startPos, int length, int initStyle,
- Accessor &styler) {
- bool foldComment = styler.GetPropertyInt("fold.comment") != 0;
- bool foldPreprocessor = styler.GetPropertyInt("fold.preprocessor") != 0;
- bool foldCompact = styler.GetPropertyInt("fold.compact", 1) != 0;
- bool foldAtElse = styler.GetPropertyInt("fold.at.else", 0) != 0;
- // Verilog specific folding options:
- // fold_at_module -
- // Generally used methodology in verilog code is
- // one module per file, so folding at module definition is useless.
- // fold_at_brace/parenthese -
- // Folding of long port lists can be convenient.
- bool foldAtModule = styler.GetPropertyInt("fold.verilog.flags", 0) != 0;
- bool foldAtBrace = 1;
- bool foldAtParenthese = 1;
-
- 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 (foldComment && IsStreamCommentStyle(style)) {
- if (!IsStreamCommentStyle(stylePrev)) {
- levelNext++;
- } else if (!IsStreamCommentStyle(styleNext) && !atEOL) {
- // Comments don't end at end of line and the next character may be unstyled.
- levelNext--;
- }
- }
- if (foldComment && atEOL && IsCommentLine(lineCurrent, styler))
- {
- if (!IsCommentLine(lineCurrent - 1, styler)
- && IsCommentLine(lineCurrent + 1, styler))
- levelNext++;
- else if (IsCommentLine(lineCurrent - 1, styler)
- && !IsCommentLine(lineCurrent+1, styler))
- levelNext--;
- }
- if (foldComment && (style == SCE_V_COMMENTLINE)) {
- if ((ch == '/') && (chNext == '/')) {
- char chNext2 = styler.SafeGetCharAt(i + 2);
- if (chNext2 == '{') {
- levelNext++;
- } else if (chNext2 == '}') {
- levelNext--;
- }
- }
- }
- if (foldPreprocessor && (style == SCE_V_PREPROCESSOR)) {
- if (ch == '`') {
- unsigned int j = i + 1;
- while ((j < endPos) && IsASpaceOrTab(styler.SafeGetCharAt(j))) {
- j++;
- }
- if (styler.Match(j, "if")) {
- levelNext++;
- } else if (styler.Match(j, "end")) {
- levelNext--;
- }
- }
- }
- if (style == SCE_V_OPERATOR) {
- if (foldAtParenthese) {
- if (ch == '(') {
- levelNext++;
- } else if (ch == ')') {
- levelNext--;
- }
- }
- }
- if (style == SCE_V_OPERATOR) {
- if (foldAtBrace) {
- if (ch == '{') {
- levelNext++;
- } else if (ch == '}') {
- levelNext--;
- }
- }
- }
- if (style == SCE_V_WORD && stylePrev != SCE_V_WORD) {
- unsigned int j = i;
- if (styler.Match(j, "case") ||
- styler.Match(j, "casex") ||
- styler.Match(j, "casez") ||
- styler.Match(j, "function") ||
- styler.Match(j, "fork") ||
- styler.Match(j, "table") ||
- styler.Match(j, "task") ||
- styler.Match(j, "generate") ||
- styler.Match(j, "specify") ||
- styler.Match(j, "primitive") ||
- (styler.Match(j, "module") && foldAtModule) ||
- styler.Match(j, "begin")) {
- levelNext++;
- } else if (styler.Match(j, "endcase") ||
- styler.Match(j, "endfunction") ||
- styler.Match(j, "join") ||
- styler.Match(j, "endtask") ||
- styler.Match(j, "endgenerate") ||
- styler.Match(j, "endtable") ||
- styler.Match(j, "endspecify") ||
- styler.Match(j, "endprimitive") ||
- (styler.Match(j, "endmodule") && foldAtModule) ||
- (styler.Match(j, "end") && !IsAWordChar(styler.SafeGetCharAt(j+3)))) {
- 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 FoldVerilogDoc(unsigned int startPos, int length, int initStyle, WordList *[],
- Accessor &styler) {
- FoldNoBoxVerilogDoc(startPos, length, initStyle, styler);
-}
-
-static const char * const verilogWordLists[] = {
- "Primary keywords and identifiers",
- "Secondary keywords and identifiers",
- "System Tasks",
- "User defined tasks and identifiers",
- "Unused",
- 0,
- };
-
-
-LexerModule lmVerilog(SCLEX_VERILOG, ColouriseVerilogDoc, "verilog", FoldVerilogDoc, verilogWordLists);
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 13:22:00 +0000