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145
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1
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2 /* Compiler implementation of the D programming language
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3 * Copyright (C) 1999-2019 by The D Language Foundation, All Rights Reserved
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4 * written by Walter Bright
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5 * http://www.digitalmars.com
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6 * Distributed under the Boost Software License, Version 1.0.
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7 * http://www.boost.org/LICENSE_1_0.txt
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8 * https://github.com/dlang/dmd/blob/master/src/dmd/statement.h
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9 */
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10
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11 #pragma once
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12
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13 #include "root/root.h"
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14
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15 #include "arraytypes.h"
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16 #include "dsymbol.h"
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17 #include "visitor.h"
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18 #include "tokens.h"
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19
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20 struct OutBuffer;
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21 struct Scope;
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22 class Expression;
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23 class LabelDsymbol;
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24 class Identifier;
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25 class IfStatement;
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26 class ExpStatement;
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27 class DefaultStatement;
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28 class VarDeclaration;
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29 class Condition;
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30 class Module;
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31 struct Token;
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32 class ErrorStatement;
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33 class ReturnStatement;
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34 class CompoundStatement;
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35 class Parameter;
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36 class StaticAssert;
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37 class AsmStatement;
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38 class GotoStatement;
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39 class ScopeStatement;
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40 class TryCatchStatement;
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41 class TryFinallyStatement;
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42 class CaseStatement;
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43 class DefaultStatement;
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44 class LabelStatement;
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45 class StaticForeach;
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46
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47 // Back end
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48 struct code;
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49
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50 bool inferAggregate(ForeachStatement *fes, Scope *sc, Dsymbol *&sapply);
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51 bool inferApplyArgTypes(ForeachStatement *fes, Scope *sc, Dsymbol *&sapply);
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52
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53 /* How a statement exits; this is returned by blockExit()
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54 */
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55 enum BE
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56 {
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57 BEnone = 0,
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58 BEfallthru = 1,
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59 BEthrow = 2,
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60 BEreturn = 4,
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61 BEgoto = 8,
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62 BEhalt = 0x10,
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63 BEbreak = 0x20,
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64 BEcontinue = 0x40,
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65 BEerrthrow = 0x80,
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66 BEany = (BEfallthru | BEthrow | BEreturn | BEgoto | BEhalt)
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67 };
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68
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69 class Statement : public RootObject
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70 {
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71 public:
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72 Loc loc;
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73
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74 Statement(Loc loc);
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75 virtual Statement *syntaxCopy();
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76
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77 void print();
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78 const char *toChars();
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79
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80 void error(const char *format, ...);
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81 void warning(const char *format, ...);
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82 void deprecation(const char *format, ...);
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83 virtual Statement *getRelatedLabeled() { return this; }
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84 virtual bool hasBreak();
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85 virtual bool hasContinue();
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86 bool usesEH();
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87 bool comeFrom();
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88 bool hasCode();
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89 virtual Statement *scopeCode(Scope *sc, Statement **sentry, Statement **sexit, Statement **sfinally);
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90 virtual Statements *flatten(Scope *sc);
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91 virtual Statement *last();
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92
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93 // Avoid dynamic_cast
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94 virtual ErrorStatement *isErrorStatement() { return NULL; }
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95 virtual ScopeStatement *isScopeStatement() { return NULL; }
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96 virtual ExpStatement *isExpStatement() { return NULL; }
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97 virtual CompoundStatement *isCompoundStatement() { return NULL; }
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98 virtual ReturnStatement *isReturnStatement() { return NULL; }
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99 virtual IfStatement *isIfStatement() { return NULL; }
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100 virtual CaseStatement *isCaseStatement() { return NULL; }
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101 virtual DefaultStatement *isDefaultStatement() { return NULL; }
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102 virtual LabelStatement *isLabelStatement() { return NULL; }
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103 virtual GotoDefaultStatement *isGotoDefaultStatement() { return NULL; }
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104 virtual GotoCaseStatement *isGotoCaseStatement() { return NULL; }
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105 virtual BreakStatement *isBreakStatement() { return NULL; }
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106 virtual DtorExpStatement *isDtorExpStatement() { return NULL; }
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107 virtual ForwardingStatement *isForwardingStatement() { return NULL; }
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108 virtual void accept(Visitor *v) { v->visit(this); }
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109 };
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110
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111 /** Any Statement that fails semantic() or has a component that is an ErrorExp or
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112 * a TypeError should return an ErrorStatement from semantic().
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113 */
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114 class ErrorStatement : public Statement
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115 {
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116 public:
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117 ErrorStatement();
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118 Statement *syntaxCopy();
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119
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120 ErrorStatement *isErrorStatement() { return this; }
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121 void accept(Visitor *v) { v->visit(this); }
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122 };
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123
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124 class PeelStatement : public Statement
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125 {
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126 public:
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127 Statement *s;
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128
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129 PeelStatement(Statement *s);
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130 void accept(Visitor *v) { v->visit(this); }
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131 };
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132
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133 class ExpStatement : public Statement
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134 {
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135 public:
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136 Expression *exp;
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137
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138 ExpStatement(Loc loc, Expression *exp);
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139 ExpStatement(Loc loc, Dsymbol *s);
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140 static ExpStatement *create(Loc loc, Expression *exp);
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141 Statement *syntaxCopy();
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142 Statement *scopeCode(Scope *sc, Statement **sentry, Statement **sexit, Statement **sfinally);
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143 Statements *flatten(Scope *sc);
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144
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145 ExpStatement *isExpStatement() { return this; }
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146 void accept(Visitor *v) { v->visit(this); }
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147 };
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148
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149 class DtorExpStatement : public ExpStatement
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150 {
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151 public:
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152 /* Wraps an expression that is the destruction of 'var'
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153 */
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154
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155 VarDeclaration *var;
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156
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157 DtorExpStatement(Loc loc, Expression *exp, VarDeclaration *v);
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158 Statement *syntaxCopy();
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159 void accept(Visitor *v) { v->visit(this); }
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160
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161 DtorExpStatement *isDtorExpStatement() { return this; }
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162 };
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163
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164 class CompileStatement : public Statement
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165 {
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166 public:
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167 Expression *exp;
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168
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169 CompileStatement(Loc loc, Expression *exp);
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170 Statement *syntaxCopy();
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171 Statements *flatten(Scope *sc);
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172 void accept(Visitor *v) { v->visit(this); }
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173 };
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174
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175 class CompoundStatement : public Statement
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176 {
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177 public:
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178 Statements *statements;
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179
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180 CompoundStatement(Loc loc, Statements *s);
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181 CompoundStatement(Loc loc, Statement *s1);
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182 CompoundStatement(Loc loc, Statement *s1, Statement *s2);
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183 static CompoundStatement *create(Loc loc, Statement *s1, Statement *s2);
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184 Statement *syntaxCopy();
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185 Statements *flatten(Scope *sc);
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186 ReturnStatement *isReturnStatement();
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187 Statement *last();
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188
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189 CompoundStatement *isCompoundStatement() { return this; }
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190 void accept(Visitor *v) { v->visit(this); }
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191 };
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192
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193 class CompoundDeclarationStatement : public CompoundStatement
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194 {
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195 public:
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196 CompoundDeclarationStatement(Loc loc, Statements *s);
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197 Statement *syntaxCopy();
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198 void accept(Visitor *v) { v->visit(this); }
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199 };
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200
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201 /* The purpose of this is so that continue will go to the next
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202 * of the statements, and break will go to the end of the statements.
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203 */
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204 class UnrolledLoopStatement : public Statement
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205 {
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206 public:
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207 Statements *statements;
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208
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209 UnrolledLoopStatement(Loc loc, Statements *statements);
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210 Statement *syntaxCopy();
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211 bool hasBreak();
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212 bool hasContinue();
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213
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214 void accept(Visitor *v) { v->visit(this); }
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215 };
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216
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217 class ScopeStatement : public Statement
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218 {
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219 public:
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220 Statement *statement;
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221 Loc endloc; // location of closing curly bracket
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222
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223 ScopeStatement(Loc loc, Statement *s, Loc endloc);
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224 Statement *syntaxCopy();
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225 ScopeStatement *isScopeStatement() { return this; }
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226 ReturnStatement *isReturnStatement();
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227 bool hasBreak();
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228 bool hasContinue();
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229
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230 void accept(Visitor *v) { v->visit(this); }
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231 };
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232
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233 class ForwardingStatement : public Statement
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234 {
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235 ForwardingScopeDsymbol *sym;
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236 Statement *statement;
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237
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238 Statement *syntaxCopy();
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239 Statement *getRelatedLabeled();
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240 bool hasBreak();
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241 bool hasContinue();
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242 Statement *scopeCode(Scope *sc, Statement **sentry, Statement **sexception, Statement **sfinally);
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243 Statement *last();
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244 Statements *flatten(Scope *sc);
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245 ForwardingStatement *isForwardingStatement() { return this; }
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246 void accept(Visitor *v) { v->visit(this); }
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247 };
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248
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249 class WhileStatement : public Statement
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250 {
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251 public:
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252 Expression *condition;
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253 Statement *_body;
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254 Loc endloc; // location of closing curly bracket
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255
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256 WhileStatement(Loc loc, Expression *c, Statement *b, Loc endloc);
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257 Statement *syntaxCopy();
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258 bool hasBreak();
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259 bool hasContinue();
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260
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261 void accept(Visitor *v) { v->visit(this); }
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262 };
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263
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264 class DoStatement : public Statement
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265 {
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266 public:
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267 Statement *_body;
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268 Expression *condition;
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269 Loc endloc; // location of ';' after while
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270
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271 DoStatement(Loc loc, Statement *b, Expression *c, Loc endloc);
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272 Statement *syntaxCopy();
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273 bool hasBreak();
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274 bool hasContinue();
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275
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276 void accept(Visitor *v) { v->visit(this); }
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277 };
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278
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279 class ForStatement : public Statement
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280 {
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281 public:
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282 Statement *_init;
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283 Expression *condition;
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284 Expression *increment;
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285 Statement *_body;
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286 Loc endloc; // location of closing curly bracket
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287
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288 // When wrapped in try/finally clauses, this points to the outermost one,
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289 // which may have an associated label. Internal break/continue statements
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290 // treat that label as referring to this loop.
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291 Statement *relatedLabeled;
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292
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293 ForStatement(Loc loc, Statement *init, Expression *condition, Expression *increment, Statement *body, Loc endloc);
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294 Statement *syntaxCopy();
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295 Statement *scopeCode(Scope *sc, Statement **sentry, Statement **sexit, Statement **sfinally);
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296 Statement *getRelatedLabeled() { return relatedLabeled ? relatedLabeled : this; }
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297 bool hasBreak();
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298 bool hasContinue();
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299
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300 void accept(Visitor *v) { v->visit(this); }
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301 };
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302
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303 class ForeachStatement : public Statement
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304 {
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305 public:
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306 TOK op; // TOKforeach or TOKforeach_reverse
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307 Parameters *parameters; // array of Parameter*'s
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308 Expression *aggr;
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309 Statement *_body;
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310 Loc endloc; // location of closing curly bracket
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311
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312 VarDeclaration *key;
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313 VarDeclaration *value;
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314
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315 FuncDeclaration *func; // function we're lexically in
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316
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317 Statements *cases; // put breaks, continues, gotos and returns here
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318 ScopeStatements *gotos; // forward referenced goto's go here
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319
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320 ForeachStatement(Loc loc, TOK op, Parameters *parameters, Expression *aggr, Statement *body, Loc endloc);
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321 Statement *syntaxCopy();
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322 bool checkForArgTypes();
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323 bool hasBreak();
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324 bool hasContinue();
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325
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326 void accept(Visitor *v) { v->visit(this); }
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327 };
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328
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329 class ForeachRangeStatement : public Statement
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330 {
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331 public:
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332 TOK op; // TOKforeach or TOKforeach_reverse
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333 Parameter *prm; // loop index variable
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334 Expression *lwr;
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335 Expression *upr;
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336 Statement *_body;
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337 Loc endloc; // location of closing curly bracket
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338
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339 VarDeclaration *key;
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340
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341 ForeachRangeStatement(Loc loc, TOK op, Parameter *prm,
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342 Expression *lwr, Expression *upr, Statement *body, Loc endloc);
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343 Statement *syntaxCopy();
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344 bool hasBreak();
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345 bool hasContinue();
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346
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347 void accept(Visitor *v) { v->visit(this); }
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348 };
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349
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350 class IfStatement : public Statement
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351 {
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352 public:
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353 Parameter *prm;
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354 Expression *condition;
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355 Statement *ifbody;
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356 Statement *elsebody;
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357 Loc endloc; // location of closing curly bracket
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358
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359 VarDeclaration *match; // for MatchExpression results
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360
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361 IfStatement(Loc loc, Parameter *prm, Expression *condition, Statement *ifbody, Statement *elsebody, Loc endloc);
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362 Statement *syntaxCopy();
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363 IfStatement *isIfStatement() { return this; }
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364
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365 void accept(Visitor *v) { v->visit(this); }
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366 };
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367
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368 class ConditionalStatement : public Statement
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369 {
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370 public:
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371 Condition *condition;
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372 Statement *ifbody;
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373 Statement *elsebody;
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374
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375 ConditionalStatement(Loc loc, Condition *condition, Statement *ifbody, Statement *elsebody);
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376 Statement *syntaxCopy();
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377 Statements *flatten(Scope *sc);
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378
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379 void accept(Visitor *v) { v->visit(this); }
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380 };
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381
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382 class StaticForeachStatement : public Statement
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383 {
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384 public:
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385 StaticForeach *sfe;
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386
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387 Statement *syntaxCopy();
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388 Statements *flatten(Scope *sc);
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389
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390 void accept(Visitor *v) { v->visit(this); }
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391 };
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392
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393 class PragmaStatement : public Statement
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394 {
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395 public:
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396 Identifier *ident;
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397 Expressions *args; // array of Expression's
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398 Statement *_body;
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399
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400 PragmaStatement(Loc loc, Identifier *ident, Expressions *args, Statement *body);
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401 Statement *syntaxCopy();
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402
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403 void accept(Visitor *v) { v->visit(this); }
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404 };
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405
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406 class StaticAssertStatement : public Statement
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407 {
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408 public:
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409 StaticAssert *sa;
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410
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411 StaticAssertStatement(StaticAssert *sa);
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412 Statement *syntaxCopy();
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413
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414 void accept(Visitor *v) { v->visit(this); }
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415 };
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416
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417 class SwitchStatement : public Statement
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418 {
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419 public:
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420 Expression *condition;
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421 Statement *_body;
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422 bool isFinal;
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423
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424 DefaultStatement *sdefault;
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425 TryFinallyStatement *tf;
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426 GotoCaseStatements gotoCases; // array of unresolved GotoCaseStatement's
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427 CaseStatements *cases; // array of CaseStatement's
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428 int hasNoDefault; // !=0 if no default statement
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429 int hasVars; // !=0 if has variable case values
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430 VarDeclaration *lastVar;
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431
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432 SwitchStatement(Loc loc, Expression *c, Statement *b, bool isFinal);
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433 Statement *syntaxCopy();
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434 bool hasBreak();
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435 bool checkLabel();
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436
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437 void accept(Visitor *v) { v->visit(this); }
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438 };
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439
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440 class CaseStatement : public Statement
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441 {
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442 public:
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443 Expression *exp;
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444 Statement *statement;
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445
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446 int index; // which case it is (since we sort this)
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447 VarDeclaration *lastVar;
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448
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449 CaseStatement(Loc loc, Expression *exp, Statement *s);
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450 Statement *syntaxCopy();
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451 int compare(RootObject *obj);
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452 CaseStatement *isCaseStatement() { return this; }
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453
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454 void accept(Visitor *v) { v->visit(this); }
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455 };
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456
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457
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458 class CaseRangeStatement : public Statement
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459 {
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460 public:
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461 Expression *first;
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462 Expression *last;
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463 Statement *statement;
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464
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465 CaseRangeStatement(Loc loc, Expression *first, Expression *last, Statement *s);
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466 Statement *syntaxCopy();
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467 void accept(Visitor *v) { v->visit(this); }
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468 };
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469
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470
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471 class DefaultStatement : public Statement
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472 {
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473 public:
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474 Statement *statement;
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475 VarDeclaration *lastVar;
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476
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477 DefaultStatement(Loc loc, Statement *s);
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478 Statement *syntaxCopy();
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479 DefaultStatement *isDefaultStatement() { return this; }
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480
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481 void accept(Visitor *v) { v->visit(this); }
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482 };
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483
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484 class GotoDefaultStatement : public Statement
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485 {
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486 public:
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487 SwitchStatement *sw;
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488
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489 GotoDefaultStatement(Loc loc);
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490 Statement *syntaxCopy();
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491 GotoDefaultStatement *isGotoDefaultStatement() { return this; }
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492
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493 void accept(Visitor *v) { v->visit(this); }
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494 };
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495
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496 class GotoCaseStatement : public Statement
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497 {
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498 public:
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499 Expression *exp; // NULL, or which case to goto
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500 CaseStatement *cs; // case statement it resolves to
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501
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502 GotoCaseStatement(Loc loc, Expression *exp);
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503 Statement *syntaxCopy();
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504 GotoCaseStatement *isGotoCaseStatement() { return this; }
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505
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506 void accept(Visitor *v) { v->visit(this); }
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507 };
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508
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509 class SwitchErrorStatement : public Statement
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510 {
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511 public:
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512 SwitchErrorStatement(Loc loc);
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513
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514 void accept(Visitor *v) { v->visit(this); }
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515 };
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516
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517 class ReturnStatement : public Statement
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518 {
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519 public:
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520 Expression *exp;
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521 size_t caseDim;
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522
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523 ReturnStatement(Loc loc, Expression *exp);
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|
524 Statement *syntaxCopy();
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525
|
|
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526 ReturnStatement *isReturnStatement() { return this; }
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|
|
527 void accept(Visitor *v) { v->visit(this); }
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|
|
528 };
|
|
|
529
|
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530 class BreakStatement : public Statement
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531 {
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|
|
532 public:
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|
|
533 Identifier *ident;
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|
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534
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535 BreakStatement(Loc loc, Identifier *ident);
|
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|
536 Statement *syntaxCopy();
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|
|
537
|
|
|
538 BreakStatement *isBreakStatement() { return this; }
|
|
|
539 void accept(Visitor *v) { v->visit(this); }
|
|
|
540 };
|
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|
541
|
|
|
542 class ContinueStatement : public Statement
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543 {
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|
544 public:
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545 Identifier *ident;
|
|
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546
|
|
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547 ContinueStatement(Loc loc, Identifier *ident);
|
|
|
548 Statement *syntaxCopy();
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|
|
549
|
|
|
550 void accept(Visitor *v) { v->visit(this); }
|
|
|
551 };
|
|
|
552
|
|
|
553 class SynchronizedStatement : public Statement
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554 {
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|
|
555 public:
|
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|
556 Expression *exp;
|
|
|
557 Statement *_body;
|
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558
|
|
|
559 SynchronizedStatement(Loc loc, Expression *exp, Statement *body);
|
|
|
560 Statement *syntaxCopy();
|
|
|
561 bool hasBreak();
|
|
|
562 bool hasContinue();
|
|
|
563
|
|
|
564 void accept(Visitor *v) { v->visit(this); }
|
|
|
565 };
|
|
|
566
|
|
|
567 class WithStatement : public Statement
|
|
|
568 {
|
|
|
569 public:
|
|
|
570 Expression *exp;
|
|
|
571 Statement *_body;
|
|
|
572 VarDeclaration *wthis;
|
|
|
573 Loc endloc;
|
|
|
574
|
|
|
575 WithStatement(Loc loc, Expression *exp, Statement *body, Loc endloc);
|
|
|
576 Statement *syntaxCopy();
|
|
|
577
|
|
|
578 void accept(Visitor *v) { v->visit(this); }
|
|
|
579 };
|
|
|
580
|
|
|
581 class TryCatchStatement : public Statement
|
|
|
582 {
|
|
|
583 public:
|
|
|
584 Statement *_body;
|
|
|
585 Catches *catches;
|
|
|
586
|
|
|
587 TryCatchStatement(Loc loc, Statement *body, Catches *catches);
|
|
|
588 Statement *syntaxCopy();
|
|
|
589 bool hasBreak();
|
|
|
590
|
|
|
591 void accept(Visitor *v) { v->visit(this); }
|
|
|
592 };
|
|
|
593
|
|
|
594 class Catch : public RootObject
|
|
|
595 {
|
|
|
596 public:
|
|
|
597 Loc loc;
|
|
|
598 Type *type;
|
|
|
599 Identifier *ident;
|
|
|
600 VarDeclaration *var;
|
|
|
601 Statement *handler;
|
|
|
602
|
|
|
603 // set if semantic processing errors
|
|
|
604 bool errors;
|
|
|
605
|
|
|
606 // was generated by the compiler,
|
|
|
607 // wasn't present in source code
|
|
|
608 bool internalCatch;
|
|
|
609
|
|
|
610 Catch(Loc loc, Type *t, Identifier *id, Statement *handler);
|
|
|
611 Catch *syntaxCopy();
|
|
|
612 };
|
|
|
613
|
|
|
614 class TryFinallyStatement : public Statement
|
|
|
615 {
|
|
|
616 public:
|
|
|
617 Statement *_body;
|
|
|
618 Statement *finalbody;
|
|
|
619
|
|
|
620 TryFinallyStatement(Loc loc, Statement *body, Statement *finalbody);
|
|
|
621 static TryFinallyStatement *create(Loc loc, Statement *body, Statement *finalbody);
|
|
|
622 Statement *syntaxCopy();
|
|
|
623 bool hasBreak();
|
|
|
624 bool hasContinue();
|
|
|
625
|
|
|
626 void accept(Visitor *v) { v->visit(this); }
|
|
|
627 };
|
|
|
628
|
|
|
629 class OnScopeStatement : public Statement
|
|
|
630 {
|
|
|
631 public:
|
|
|
632 TOK tok;
|
|
|
633 Statement *statement;
|
|
|
634
|
|
|
635 OnScopeStatement(Loc loc, TOK tok, Statement *statement);
|
|
|
636 Statement *syntaxCopy();
|
|
|
637 Statement *scopeCode(Scope *sc, Statement **sentry, Statement **sexit, Statement **sfinally);
|
|
|
638
|
|
|
639 void accept(Visitor *v) { v->visit(this); }
|
|
|
640 };
|
|
|
641
|
|
|
642 class ThrowStatement : public Statement
|
|
|
643 {
|
|
|
644 public:
|
|
|
645 Expression *exp;
|
|
|
646 // was generated by the compiler,
|
|
|
647 // wasn't present in source code
|
|
|
648 bool internalThrow;
|
|
|
649
|
|
|
650 ThrowStatement(Loc loc, Expression *exp);
|
|
|
651 Statement *syntaxCopy();
|
|
|
652
|
|
|
653 void accept(Visitor *v) { v->visit(this); }
|
|
|
654 };
|
|
|
655
|
|
|
656 class DebugStatement : public Statement
|
|
|
657 {
|
|
|
658 public:
|
|
|
659 Statement *statement;
|
|
|
660
|
|
|
661 DebugStatement(Loc loc, Statement *statement);
|
|
|
662 Statement *syntaxCopy();
|
|
|
663 Statements *flatten(Scope *sc);
|
|
|
664 void accept(Visitor *v) { v->visit(this); }
|
|
|
665 };
|
|
|
666
|
|
|
667 class GotoStatement : public Statement
|
|
|
668 {
|
|
|
669 public:
|
|
|
670 Identifier *ident;
|
|
|
671 LabelDsymbol *label;
|
|
|
672 TryFinallyStatement *tf;
|
|
|
673 OnScopeStatement *os;
|
|
|
674 VarDeclaration *lastVar;
|
|
|
675
|
|
|
676 GotoStatement(Loc loc, Identifier *ident);
|
|
|
677 Statement *syntaxCopy();
|
|
|
678 bool checkLabel();
|
|
|
679
|
|
|
680 void accept(Visitor *v) { v->visit(this); }
|
|
|
681 };
|
|
|
682
|
|
|
683 class LabelStatement : public Statement
|
|
|
684 {
|
|
|
685 public:
|
|
|
686 Identifier *ident;
|
|
|
687 Statement *statement;
|
|
|
688 TryFinallyStatement *tf;
|
|
|
689 OnScopeStatement *os;
|
|
|
690 VarDeclaration *lastVar;
|
|
|
691 Statement *gotoTarget; // interpret
|
|
|
692
|
|
|
693 bool breaks; // someone did a 'break ident'
|
|
|
694
|
|
|
695 LabelStatement(Loc loc, Identifier *ident, Statement *statement);
|
|
|
696 Statement *syntaxCopy();
|
|
|
697 Statements *flatten(Scope *sc);
|
|
|
698 Statement *scopeCode(Scope *sc, Statement **sentry, Statement **sexit, Statement **sfinally);
|
|
|
699
|
|
|
700 LabelStatement *isLabelStatement() { return this; }
|
|
|
701
|
|
|
702 void accept(Visitor *v) { v->visit(this); }
|
|
|
703 };
|
|
|
704
|
|
|
705 class LabelDsymbol : public Dsymbol
|
|
|
706 {
|
|
|
707 public:
|
|
|
708 LabelStatement *statement;
|
|
|
709
|
|
|
710 LabelDsymbol(Identifier *ident);
|
|
|
711 static LabelDsymbol *create(Identifier *ident);
|
|
|
712 LabelDsymbol *isLabel();
|
|
|
713 void accept(Visitor *v) { v->visit(this); }
|
|
|
714 };
|
|
|
715
|
|
|
716 Statement* asmSemantic(AsmStatement *s, Scope *sc);
|
|
|
717
|
|
|
718 class AsmStatement : public Statement
|
|
|
719 {
|
|
|
720 public:
|
|
|
721 Token *tokens;
|
|
|
722
|
|
|
723 AsmStatement(Loc loc, Token *tokens);
|
|
|
724 Statement *syntaxCopy();
|
|
|
725 void accept(Visitor *v) { v->visit(this); }
|
|
|
726 };
|
|
|
727
|
|
|
728 class InlineAsmStatement : public AsmStatement
|
|
|
729 {
|
|
|
730 public:
|
|
|
731 code *asmcode;
|
|
|
732 unsigned asmalign; // alignment of this statement
|
|
|
733 unsigned regs; // mask of registers modified (must match regm_t in back end)
|
|
|
734 bool refparam; // true if function parameter is referenced
|
|
|
735 bool naked; // true if function is to be naked
|
|
|
736
|
|
|
737 InlineAsmStatement(Loc loc, Token *tokens);
|
|
|
738 Statement *syntaxCopy();
|
|
|
739 void accept(Visitor *v) { v->visit(this); }
|
|
|
740 };
|
|
|
741
|
|
|
742 // A GCC asm statement - assembler instructions with D expression operands
|
|
|
743 class GccAsmStatement : public AsmStatement
|
|
|
744 {
|
|
|
745 public:
|
|
|
746 StorageClass stc; // attributes of the asm {} block
|
|
|
747 Expression *insn; // string expression that is the template for assembler code
|
|
|
748 Expressions *args; // input and output operands of the statement
|
|
|
749 unsigned outputargs; // of the operands in 'args', the number of output operands
|
|
|
750 Identifiers *names; // list of symbolic names for the operands
|
|
|
751 Expressions *constraints; // list of string constants specifying constraints on operands
|
|
|
752 Expressions *clobbers; // list of string constants specifying clobbers and scratch registers
|
|
|
753 Identifiers *labels; // list of goto labels
|
|
|
754 GotoStatements *gotos; // of the goto labels, the equivalent statements they represent
|
|
|
755
|
|
|
756 GccAsmStatement(Loc loc, Token *tokens);
|
|
|
757 Statement *syntaxCopy();
|
|
|
758 void accept(Visitor *v) { v->visit(this); }
|
|
|
759 };
|
|
|
760
|
|
|
761 // a complete asm {} block
|
|
|
762 class CompoundAsmStatement : public CompoundStatement
|
|
|
763 {
|
|
|
764 public:
|
|
|
765 StorageClass stc; // postfix attributes like nothrow/pure/@trusted
|
|
|
766
|
|
|
767 CompoundAsmStatement(Loc loc, Statements *s, StorageClass stc);
|
|
|
768 CompoundAsmStatement *syntaxCopy();
|
|
|
769 Statements *flatten(Scope *sc);
|
|
|
770
|
|
|
771 void accept(Visitor *v) { v->visit(this); }
|
|
|
772 };
|
|
|
773
|
|
|
774 class ImportStatement : public Statement
|
|
|
775 {
|
|
|
776 public:
|
|
|
777 Dsymbols *imports; // Array of Import's
|
|
|
778
|
|
|
779 ImportStatement(Loc loc, Dsymbols *imports);
|
|
|
780 Statement *syntaxCopy();
|
|
|
781
|
|
|
782 void accept(Visitor *v) { v->visit(this); }
|
|
|
783 };
|
