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authorTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-30 11:36:13 -0600
committerTimothy Pearson <kb9vqf@pearsoncomputing.net>2011-11-30 11:36:13 -0600
commit664e37abfe5c796c1279b8295fb030f126b0a7d8 (patch)
tree85f4e661e5c615f01ee1cdf51ca1250b96efe315 /src/LexAsm.cpp
downloadtqscintilla-664e37abfe5c796c1279b8295fb030f126b0a7d8.tar.gz
tqscintilla-664e37abfe5c796c1279b8295fb030f126b0a7d8.zip
Initial import of qscintilla from 2007
Diffstat (limited to 'src/LexAsm.cpp')
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1 files changed, 177 insertions, 0 deletions
diff --git a/src/LexAsm.cpp b/src/LexAsm.cpp
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+// Scintilla source code edit control
+/** @file LexAsm.cxx
+ ** Lexer for Assembler, just for the MASM syntax
+ ** Written by The Black Horus
+ ** Enhancements and NASM stuff by Kein-Hong Man, 2003-10
+ ** SCE_ASM_COMMENTBLOCK and SCE_ASM_CHARACTER are for future GNU as colouring
+ **/
+// Copyright 1998-2003 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 IsAWordStart(const int ch) {
+ return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '.' ||
+ ch == '%' || ch == '@' || ch == '$' || ch == '?');
+}
+
+static inline bool IsAsmOperator(char ch) {
+ if (isalnum(ch))
+ return false;
+ // '.' left out as it is used to make up numbers
+ if (ch == '*' || ch == '/' || ch == '-' || ch == '+' ||
+ ch == '(' || ch == ')' || ch == '=' || ch == '^' ||
+ ch == '[' || ch == ']' || ch == '<' || ch == '&' ||
+ ch == '>' || ch == ',' || ch == '|' || ch == '~' ||
+ ch == '%' || ch == ':')
+ return true;
+ return false;
+}
+
+static void ColouriseAsmDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
+ Accessor &styler) {
+
+ WordList &cpuInstruction = *keywordlists[0];
+ WordList &mathInstruction = *keywordlists[1];
+ WordList &registers = *keywordlists[2];
+ WordList &directive = *keywordlists[3];
+ WordList &directiveOperand = *keywordlists[4];
+ WordList &extInstruction = *keywordlists[5];
+
+ // Do not leak onto next line
+ if (initStyle == SCE_ASM_STRINGEOL)
+ initStyle = SCE_ASM_DEFAULT;
+
+ StyleContext sc(startPos, length, initStyle, styler);
+
+ for (; sc.More(); sc.Forward())
+ {
+
+ // Prevent SCE_ASM_STRINGEOL from leaking back to previous line
+ if (sc.atLineStart && (sc.state == SCE_ASM_STRING)) {
+ sc.SetState(SCE_ASM_STRING);
+ } else if (sc.atLineStart && (sc.state == SCE_ASM_CHARACTER)) {
+ sc.SetState(SCE_ASM_CHARACTER);
+ }
+
+ // 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_ASM_OPERATOR) {
+ if (!IsAsmOperator(static_cast<char>(sc.ch))) {
+ sc.SetState(SCE_ASM_DEFAULT);
+ }
+ }else if (sc.state == SCE_ASM_NUMBER) {
+ if (!IsAWordChar(sc.ch)) {
+ sc.SetState(SCE_ASM_DEFAULT);
+ }
+ } else if (sc.state == SCE_ASM_IDENTIFIER) {
+ if (!IsAWordChar(sc.ch) ) {
+ char s[100];
+ sc.GetCurrentLowered(s, sizeof(s));
+
+ if (cpuInstruction.InList(s)) {
+ sc.ChangeState(SCE_ASM_CPUINSTRUCTION);
+ } else if (mathInstruction.InList(s)) {
+ sc.ChangeState(SCE_ASM_MATHINSTRUCTION);
+ } else if (registers.InList(s)) {
+ sc.ChangeState(SCE_ASM_REGISTER);
+ } else if (directive.InList(s)) {
+ sc.ChangeState(SCE_ASM_DIRECTIVE);
+ } else if (directiveOperand.InList(s)) {
+ sc.ChangeState(SCE_ASM_DIRECTIVEOPERAND);
+ } else if (extInstruction.InList(s)) {
+ sc.ChangeState(SCE_ASM_EXTINSTRUCTION);
+ }
+ sc.SetState(SCE_ASM_DEFAULT);
+ }
+ }
+ else if (sc.state == SCE_ASM_COMMENT ) {
+ if (sc.atLineEnd) {
+ sc.SetState(SCE_ASM_DEFAULT);
+ }
+ } else if (sc.state == SCE_ASM_STRING) {
+ if (sc.ch == '\\') {
+ if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
+ sc.Forward();
+ }
+ } else if (sc.ch == '\"') {
+ sc.ForwardSetState(SCE_ASM_DEFAULT);
+ } else if (sc.atLineEnd) {
+ sc.ChangeState(SCE_ASM_STRINGEOL);
+ sc.ForwardSetState(SCE_ASM_DEFAULT);
+ }
+ } else if (sc.state == SCE_ASM_CHARACTER) {
+ if (sc.ch == '\\') {
+ if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
+ sc.Forward();
+ }
+ } else if (sc.ch == '\'') {
+ sc.ForwardSetState(SCE_ASM_DEFAULT);
+ } else if (sc.atLineEnd) {
+ sc.ChangeState(SCE_ASM_STRINGEOL);
+ sc.ForwardSetState(SCE_ASM_DEFAULT);
+ }
+ }
+
+ // Determine if a new state should be entered.
+ if (sc.state == SCE_ASM_DEFAULT) {
+ if (sc.ch == ';'){
+ sc.SetState(SCE_ASM_COMMENT);
+ } else if (isdigit(sc.ch) || (sc.ch == '.' && isdigit(sc.chNext))) {
+ sc.SetState(SCE_ASM_NUMBER);
+ } else if (IsAWordStart(sc.ch)) {
+ sc.SetState(SCE_ASM_IDENTIFIER);
+ } else if (sc.ch == '\"') {
+ sc.SetState(SCE_ASM_STRING);
+ } else if (sc.ch == '\'') {
+ sc.SetState(SCE_ASM_CHARACTER);
+ } else if (IsAsmOperator(static_cast<char>(sc.ch))) {
+ sc.SetState(SCE_ASM_OPERATOR);
+ }
+ }
+
+ }
+ sc.Complete();
+}
+
+static const char * const asmWordListDesc[] = {
+ "CPU instructions",
+ "FPU instructions",
+ "Registers",
+ "Directives",
+ "Directive operands",
+ "Extended instructions",
+ 0
+};
+
+LexerModule lmAsm(SCLEX_ASM, ColouriseAsmDoc, "asm", 0, asmWordListDesc);
+