1 // Scintilla source code edit control
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3 ** Lexer for Assembler, just for the MASM syntax
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4 ** Written by The Black Horus
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5 ** Enhancements and NASM stuff by Kein-Hong Man, 2003-10
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6 ** SCE_ASM_COMMENTBLOCK and SCE_ASM_CHARACTER are for future GNU as colouring
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8 // Copyright 1998-2003 by Neil Hodgson <neilh@scintilla.org>
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9 // The License.txt file describes the conditions under which this software may be distributed.
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17 #include "Platform.h"
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19 #include "PropSet.h"
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20 #include "Accessor.h"
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21 #include "StyleContext.h"
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22 #include "KeyWords.h"
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23 #include "Scintilla.h"
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24 #include "SciLexer.h"
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26 #ifdef SCI_NAMESPACE
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27 using namespace Scintilla;
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30 static inline bool IsAWordChar(const int ch) {
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31 return (ch < 0x80) && (isalnum(ch) || ch == '.' ||
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32 ch == '_' || ch == '?');
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35 static inline bool IsAWordStart(const int ch) {
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36 return (ch < 0x80) && (isalnum(ch) || ch == '_' || ch == '.' ||
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37 ch == '%' || ch == '@' || ch == '$' || ch == '?');
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40 static inline bool IsAsmOperator(const int ch) {
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41 if ((ch < 0x80) && (isalnum(ch)))
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43 // '.' left out as it is used to make up numbers
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44 if (ch == '*' || ch == '/' || ch == '-' || ch == '+' ||
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45 ch == '(' || ch == ')' || ch == '=' || ch == '^' ||
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46 ch == '[' || ch == ']' || ch == '<' || ch == '&' ||
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47 ch == '>' || ch == ',' || ch == '|' || ch == '~' ||
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48 ch == '%' || ch == ':')
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53 static void ColouriseAsmDoc(unsigned int startPos, int length, int initStyle, WordList *keywordlists[],
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56 WordList &cpuInstruction = *keywordlists[0];
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57 WordList &mathInstruction = *keywordlists[1];
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58 WordList ®isters = *keywordlists[2];
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59 WordList &directive = *keywordlists[3];
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60 WordList &directiveOperand = *keywordlists[4];
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61 WordList &extInstruction = *keywordlists[5];
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63 // Do not leak onto next line
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64 if (initStyle == SCE_ASM_STRINGEOL)
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65 initStyle = SCE_ASM_DEFAULT;
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67 StyleContext sc(startPos, length, initStyle, styler);
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69 for (; sc.More(); sc.Forward())
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72 // Prevent SCE_ASM_STRINGEOL from leaking back to previous line
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73 if (sc.atLineStart && (sc.state == SCE_ASM_STRING)) {
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74 sc.SetState(SCE_ASM_STRING);
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75 } else if (sc.atLineStart && (sc.state == SCE_ASM_CHARACTER)) {
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76 sc.SetState(SCE_ASM_CHARACTER);
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79 // Handle line continuation generically.
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80 if (sc.ch == '\\') {
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81 if (sc.chNext == '\n' || sc.chNext == '\r') {
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83 if (sc.ch == '\r' && sc.chNext == '\n') {
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90 // Determine if the current state should terminate.
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91 if (sc.state == SCE_ASM_OPERATOR) {
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92 if (!IsAsmOperator(sc.ch)) {
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93 sc.SetState(SCE_ASM_DEFAULT);
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95 }else if (sc.state == SCE_ASM_NUMBER) {
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96 if (!IsAWordChar(sc.ch)) {
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97 sc.SetState(SCE_ASM_DEFAULT);
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99 } else if (sc.state == SCE_ASM_IDENTIFIER) {
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100 if (!IsAWordChar(sc.ch) ) {
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102 sc.GetCurrentLowered(s, sizeof(s));
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104 if (cpuInstruction.InList(s)) {
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105 sc.ChangeState(SCE_ASM_CPUINSTRUCTION);
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106 } else if (mathInstruction.InList(s)) {
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107 sc.ChangeState(SCE_ASM_MATHINSTRUCTION);
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108 } else if (registers.InList(s)) {
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109 sc.ChangeState(SCE_ASM_REGISTER);
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110 } else if (directive.InList(s)) {
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111 sc.ChangeState(SCE_ASM_DIRECTIVE);
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112 } else if (directiveOperand.InList(s)) {
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113 sc.ChangeState(SCE_ASM_DIRECTIVEOPERAND);
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114 } else if (extInstruction.InList(s)) {
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115 sc.ChangeState(SCE_ASM_EXTINSTRUCTION);
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117 sc.SetState(SCE_ASM_DEFAULT);
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120 else if (sc.state == SCE_ASM_COMMENT ) {
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121 if (sc.atLineEnd) {
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122 sc.SetState(SCE_ASM_DEFAULT);
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124 } else if (sc.state == SCE_ASM_STRING) {
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125 if (sc.ch == '\\') {
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126 if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
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129 } else if (sc.ch == '\"') {
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130 sc.ForwardSetState(SCE_ASM_DEFAULT);
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131 } else if (sc.atLineEnd) {
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132 sc.ChangeState(SCE_ASM_STRINGEOL);
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133 sc.ForwardSetState(SCE_ASM_DEFAULT);
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135 } else if (sc.state == SCE_ASM_CHARACTER) {
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136 if (sc.ch == '\\') {
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137 if (sc.chNext == '\"' || sc.chNext == '\'' || sc.chNext == '\\') {
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140 } else if (sc.ch == '\'') {
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141 sc.ForwardSetState(SCE_ASM_DEFAULT);
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142 } else if (sc.atLineEnd) {
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143 sc.ChangeState(SCE_ASM_STRINGEOL);
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144 sc.ForwardSetState(SCE_ASM_DEFAULT);
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148 // Determine if a new state should be entered.
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149 if (sc.state == SCE_ASM_DEFAULT) {
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151 sc.SetState(SCE_ASM_COMMENT);
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152 } else if (isascii(sc.ch) && (isdigit(sc.ch) || (sc.ch == '.' && isascii(sc.chNext) && isdigit(sc.chNext)))) {
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153 sc.SetState(SCE_ASM_NUMBER);
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154 } else if (IsAWordStart(sc.ch)) {
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155 sc.SetState(SCE_ASM_IDENTIFIER);
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156 } else if (sc.ch == '\"') {
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157 sc.SetState(SCE_ASM_STRING);
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158 } else if (sc.ch == '\'') {
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159 sc.SetState(SCE_ASM_CHARACTER);
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160 } else if (IsAsmOperator(sc.ch)) {
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161 sc.SetState(SCE_ASM_OPERATOR);
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169 static const char * const asmWordListDesc[] = {
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170 "CPU instructions",
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171 "FPU instructions",
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174 "Directive operands",
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175 "Extended instructions",
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179 LexerModule lmAsm(SCLEX_ASM, ColouriseAsmDoc, "asm", 0, asmWordListDesc);
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