Mercurial > projects > ldc
view dmd/statement.h @ 314:8d98e42ece93 trunk
[svn r335] The basics of exception handling are in place.
Still need to make sure calls are turned into invokes everywhere. (NewExpression for instance)
Still some rough edges and corner cases to figure out.
Needs testing!
author | ChristianK |
---|---|
date | Wed, 02 Jul 2008 22:20:18 +0200 |
parents | d59c363fccad |
children | aaade6ded589 |
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// Compiler implementation of the D programming language // Copyright (c) 1999-2007 by Digital Mars // All Rights Reserved // written by Walter Bright // http://www.digitalmars.com // License for redistribution is by either the Artistic License // in artistic.txt, or the GNU General Public License in gnu.txt. // See the included readme.txt for details. #ifndef DMD_STATEMENT_H #define DMD_STATEMENT_H #ifdef __DMC__ #pragma once #endif /* __DMC__ */ #include "root.h" #include "arraytypes.h" #include "dsymbol.h" #include "lexer.h" struct OutBuffer; struct Scope; struct Expression; struct LabelDsymbol; struct Identifier; struct IfStatement; struct DeclarationStatement; struct DefaultStatement; struct VarDeclaration; struct Condition; struct Module; struct Token; struct InlineCostState; struct InlineDoState; struct InlineScanState; struct ReturnStatement; struct CompoundStatement; struct Argument; struct StaticAssert; struct AsmStatement; struct AsmBlockStatement; struct GotoStatement; struct ScopeStatement; struct TryCatchStatement; struct TryFinallyStatement; struct HdrGenState; struct InterState; struct CaseStatement; struct LabelStatement; struct VolatileStatement; struct SynchronizedStatement; enum TOK; namespace llvm { class Value; class BasicBlock; class ConstantInt; } // Back end struct IRState; struct Blockx; #if IN_LLVM struct DValue; typedef DValue elem; #endif #if IN_GCC union tree_node; typedef union tree_node block; //union tree_node; typedef union tree_node elem; #else struct block; //struct elem; #endif struct code; // LLVMDC this is used for tracking try-finally, synchronized and volatile scopes // definitions in gen/llvmhelpers.cpp struct EnclosingHandler : Object { virtual void emitCode(IRState* p) = 0; virtual EnclosingHandler* getEnclosing() = 0; }; struct EnclosingTryFinally : EnclosingHandler { TryFinallyStatement* tf; void emitCode(IRState* p); EnclosingHandler* getEnclosing(); EnclosingTryFinally(TryFinallyStatement* _tf) : tf(_tf) {} }; struct EnclosingVolatile : EnclosingHandler { VolatileStatement* v; void emitCode(IRState* p); EnclosingHandler* getEnclosing(); EnclosingVolatile(VolatileStatement* _tf) : v(_tf) {} }; struct EnclosingSynchro : EnclosingHandler { SynchronizedStatement* s; void emitCode(IRState* p); EnclosingHandler* getEnclosing(); EnclosingSynchro(SynchronizedStatement* _tf) : s(_tf) {} }; struct Statement : Object { Loc loc; Statement(Loc loc); virtual Statement *syntaxCopy(); void print(); char *toChars(); void error(const char *format, ...); virtual void toCBuffer(OutBuffer *buf, HdrGenState *hgs); virtual TryCatchStatement *isTryCatchStatement() { return NULL; } virtual GotoStatement *isGotoStatement() { return NULL; } virtual AsmStatement *isAsmStatement() { return NULL; } virtual AsmBlockStatement *isAsmBlockStatement() { return NULL; } #ifdef _DH int incontract; #endif virtual ScopeStatement *isScopeStatement() { return NULL; } virtual Statement *semantic(Scope *sc); Statement *semanticScope(Scope *sc, Statement *sbreak, Statement *scontinue); virtual int hasBreak(); virtual int hasContinue(); virtual int usesEH(); virtual int fallOffEnd(); virtual int comeFrom(); virtual void scopeCode(Statement **sentry, Statement **sexit, Statement **sfinally); virtual Statements *flatten(Scope *sc); virtual Expression *interpret(InterState *istate); virtual int inlineCost(InlineCostState *ics); virtual Expression *doInline(InlineDoState *ids); virtual Statement *inlineScan(InlineScanState *iss); // Back end virtual void toIR(IRState *irs); // Avoid dynamic_cast virtual DeclarationStatement *isDeclarationStatement() { return NULL; } virtual CompoundStatement *isCompoundStatement() { return NULL; } virtual ReturnStatement *isReturnStatement() { return NULL; } virtual IfStatement *isIfStatement() { return NULL; } virtual CaseStatement* isCaseStatement() { return NULL; } }; struct ExpStatement : Statement { Expression *exp; ExpStatement(Loc loc, Expression *exp); Statement *syntaxCopy(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); Statement *semantic(Scope *sc); Expression *interpret(InterState *istate); int fallOffEnd(); int inlineCost(InlineCostState *ics); Expression *doInline(InlineDoState *ids); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); }; struct CompileStatement : Statement { Expression *exp; CompileStatement(Loc loc, Expression *exp); Statement *syntaxCopy(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); Statement *semantic(Scope *sc); }; struct DeclarationStatement : ExpStatement { // Doing declarations as an expression, rather than a statement, // makes inlining functions much easier. DeclarationStatement(Loc loc, Dsymbol *s); DeclarationStatement(Loc loc, Expression *exp); Statement *syntaxCopy(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); void scopeCode(Statement **sentry, Statement **sexit, Statement **sfinally); DeclarationStatement *isDeclarationStatement() { return this; } }; struct CompoundStatement : Statement { Statements *statements; CompoundStatement(Loc loc, Statements *s); CompoundStatement(Loc loc, Statement *s1, Statement *s2); virtual Statement *syntaxCopy(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); Statement *semantic(Scope *sc); int usesEH(); int fallOffEnd(); int comeFrom(); virtual Statements *flatten(Scope *sc); ReturnStatement *isReturnStatement(); Expression *interpret(InterState *istate); int inlineCost(InlineCostState *ics); Expression *doInline(InlineDoState *ids); Statement *inlineScan(InlineScanState *iss); virtual void toIR(IRState *irs); virtual CompoundStatement *isCompoundStatement() { return this; } }; /* The purpose of this is so that continue will go to the next * of the statements, and break will go to the end of the statements. */ struct UnrolledLoopStatement : Statement { Statements *statements; EnclosingHandler* enclosinghandler; UnrolledLoopStatement(Loc loc, Statements *statements); Statement *syntaxCopy(); Statement *semantic(Scope *sc); int hasBreak(); int hasContinue(); int usesEH(); int fallOffEnd(); int comeFrom(); Expression *interpret(InterState *istate); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); int inlineCost(InlineCostState *ics); Expression *doInline(InlineDoState *ids); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); }; struct ScopeStatement : Statement { Statement *statement; ScopeStatement(Loc loc, Statement *s); Statement *syntaxCopy(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); ScopeStatement *isScopeStatement() { return this; } Statement *semantic(Scope *sc); int hasBreak(); int hasContinue(); int usesEH(); int fallOffEnd(); int comeFrom(); Expression *interpret(InterState *istate); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); }; struct WhileStatement : Statement { Expression *condition; Statement *body; EnclosingHandler* enclosinghandler; WhileStatement(Loc loc, Expression *c, Statement *b); Statement *syntaxCopy(); Statement *semantic(Scope *sc); int hasBreak(); int hasContinue(); int usesEH(); int fallOffEnd(); int comeFrom(); Expression *interpret(InterState *istate); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); }; struct DoStatement : Statement { Statement *body; Expression *condition; EnclosingHandler* enclosinghandler; DoStatement(Loc loc, Statement *b, Expression *c); Statement *syntaxCopy(); Statement *semantic(Scope *sc); int hasBreak(); int hasContinue(); int usesEH(); int fallOffEnd(); int comeFrom(); Expression *interpret(InterState *istate); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); }; struct ForStatement : Statement { Statement *init; Expression *condition; Expression *increment; Statement *body; EnclosingHandler* enclosinghandler; ForStatement(Loc loc, Statement *init, Expression *condition, Expression *increment, Statement *body); Statement *syntaxCopy(); Statement *semantic(Scope *sc); void scopeCode(Statement **sentry, Statement **sexit, Statement **sfinally); int hasBreak(); int hasContinue(); int usesEH(); int fallOffEnd(); int comeFrom(); Expression *interpret(InterState *istate); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); }; struct ForeachStatement : Statement { enum TOK op; // TOKforeach or TOKforeach_reverse Arguments *arguments; // array of Argument*'s Expression *aggr; Statement *body; EnclosingHandler* enclosinghandler; VarDeclaration *key; VarDeclaration *value; FuncDeclaration *func; // function we're lexically in Array cases; // put breaks, continues, gotos and returns here Array gotos; // forward referenced goto's go here ForeachStatement(Loc loc, enum TOK op, Arguments *arguments, Expression *aggr, Statement *body); Statement *syntaxCopy(); Statement *semantic(Scope *sc); int hasBreak(); int hasContinue(); int usesEH(); int fallOffEnd(); int comeFrom(); Expression *interpret(InterState *istate); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); }; struct IfStatement : Statement { Argument *arg; Expression *condition; Statement *ifbody; Statement *elsebody; VarDeclaration *match; // for MatchExpression results IfStatement(Loc loc, Argument *arg, Expression *condition, Statement *ifbody, Statement *elsebody); Statement *syntaxCopy(); Statement *semantic(Scope *sc); Expression *interpret(InterState *istate); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); int usesEH(); int fallOffEnd(); IfStatement *isIfStatement() { return this; } int inlineCost(InlineCostState *ics); Expression *doInline(InlineDoState *ids); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); }; struct ConditionalStatement : Statement { Condition *condition; Statement *ifbody; Statement *elsebody; ConditionalStatement(Loc loc, Condition *condition, Statement *ifbody, Statement *elsebody); Statement *syntaxCopy(); Statement *semantic(Scope *sc); Statements *flatten(Scope *sc); int usesEH(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); }; struct PragmaStatement : Statement { Identifier *ident; Expressions *args; // array of Expression's Statement *body; PragmaStatement(Loc loc, Identifier *ident, Expressions *args, Statement *body); Statement *syntaxCopy(); Statement *semantic(Scope *sc); int usesEH(); int fallOffEnd(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); }; struct StaticAssertStatement : Statement { StaticAssert *sa; StaticAssertStatement(StaticAssert *sa); Statement *syntaxCopy(); Statement *semantic(Scope *sc); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); }; struct SwitchStatement : Statement { Expression *condition; Statement *body; DefaultStatement *sdefault; EnclosingHandler* enclosinghandler; Array gotoCases; // array of unresolved GotoCaseStatement's Array *cases; // array of CaseStatement's int hasNoDefault; // !=0 if no default statement SwitchStatement(Loc loc, Expression *c, Statement *b); Statement *syntaxCopy(); Statement *semantic(Scope *sc); int hasBreak(); int usesEH(); int fallOffEnd(); Expression *interpret(InterState *istate); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); }; struct CaseStatement : Statement { Expression *exp; Statement *statement; int index; // which case it is (since we sort this) block *cblock; // back end: label for the block CaseStatement(Loc loc, Expression *exp, Statement *s); Statement *syntaxCopy(); Statement *semantic(Scope *sc); int compare(Object *obj); int usesEH(); int fallOffEnd(); int comeFrom(); Expression *interpret(InterState *istate); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); CaseStatement* isCaseStatement() { return this; } // LLVMDC llvm::BasicBlock* bodyBB; llvm::ConstantInt* llvmIdx; }; struct DefaultStatement : Statement { Statement *statement; #if IN_GCC block *cblock; // back end: label for the block #endif DefaultStatement(Loc loc, Statement *s); Statement *syntaxCopy(); Statement *semantic(Scope *sc); int usesEH(); int fallOffEnd(); int comeFrom(); Expression *interpret(InterState *istate); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); // LLVMDC llvm::BasicBlock* bodyBB; }; struct GotoDefaultStatement : Statement { SwitchStatement *sw; EnclosingHandler* enclosinghandler; GotoDefaultStatement(Loc loc); Statement *syntaxCopy(); Statement *semantic(Scope *sc); Expression *interpret(InterState *istate); int fallOffEnd(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); void toIR(IRState *irs); }; struct GotoCaseStatement : Statement { Expression *exp; // NULL, or which case to goto CaseStatement *cs; // case statement it resolves to EnclosingHandler* enclosinghandler; SwitchStatement *sw; GotoCaseStatement(Loc loc, Expression *exp); Statement *syntaxCopy(); Statement *semantic(Scope *sc); Expression *interpret(InterState *istate); int fallOffEnd(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); void toIR(IRState *irs); }; struct SwitchErrorStatement : Statement { SwitchErrorStatement(Loc loc); int fallOffEnd(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); void toIR(IRState *irs); }; struct ReturnStatement : Statement { Expression *exp; EnclosingHandler* enclosinghandler; ReturnStatement(Loc loc, Expression *exp); Statement *syntaxCopy(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); Statement *semantic(Scope *sc); int fallOffEnd(); Expression *interpret(InterState *istate); int inlineCost(InlineCostState *ics); Expression *doInline(InlineDoState *ids); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); ReturnStatement *isReturnStatement() { return this; } }; struct BreakStatement : Statement { Identifier *ident; EnclosingHandler* enclosinghandler; BreakStatement(Loc loc, Identifier *ident); Statement *syntaxCopy(); Statement *semantic(Scope *sc); Expression *interpret(InterState *istate); int fallOffEnd(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); void toIR(IRState *irs); // LLVMDC: only set if ident is set: label statement to jump to LabelStatement *target; }; struct ContinueStatement : Statement { Identifier *ident; EnclosingHandler* enclosinghandler; ContinueStatement(Loc loc, Identifier *ident); Statement *syntaxCopy(); Statement *semantic(Scope *sc); Expression *interpret(InterState *istate); int fallOffEnd(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); void toIR(IRState *irs); // LLVMDC: only set if ident is set: label statement to jump to LabelStatement *target; }; struct SynchronizedStatement : Statement { Expression *exp; Statement *body; EnclosingHandler* enclosinghandler; SynchronizedStatement(Loc loc, Expression *exp, Statement *body); Statement *syntaxCopy(); Statement *semantic(Scope *sc); int hasBreak(); int hasContinue(); int usesEH(); int fallOffEnd(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); Statement *inlineScan(InlineScanState *iss); // Back end elem *esync; SynchronizedStatement(Loc loc, elem *esync, Statement *body); void toIR(IRState *irs); llvm::Value* llsync; }; struct WithStatement : Statement { Expression *exp; Statement *body; VarDeclaration *wthis; WithStatement(Loc loc, Expression *exp, Statement *body); Statement *syntaxCopy(); Statement *semantic(Scope *sc); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); int usesEH(); int fallOffEnd(); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); }; struct TryCatchStatement : Statement { Statement *body; Array *catches; TryCatchStatement(Loc loc, Statement *body, Array *catches); Statement *syntaxCopy(); Statement *semantic(Scope *sc); int hasBreak(); int usesEH(); int fallOffEnd(); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); TryCatchStatement *isTryCatchStatement() { return this; } }; struct Catch : Object { Loc loc; Type *type; Identifier *ident; VarDeclaration *var; Statement *handler; Catch(Loc loc, Type *t, Identifier *id, Statement *handler); Catch *syntaxCopy(); void semantic(Scope *sc); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); }; struct TryFinallyStatement : Statement { Statement *body; Statement *finalbody; EnclosingHandler* enclosinghandler; TryFinallyStatement(Loc loc, Statement *body, Statement *finalbody); Statement *syntaxCopy(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); Statement *semantic(Scope *sc); int hasBreak(); int hasContinue(); int usesEH(); int fallOffEnd(); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); }; struct OnScopeStatement : Statement { TOK tok; Statement *statement; OnScopeStatement(Loc loc, TOK tok, Statement *statement); Statement *syntaxCopy(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); Statement *semantic(Scope *sc); int usesEH(); void scopeCode(Statement **sentry, Statement **sexit, Statement **sfinally); void toIR(IRState *irs); }; struct ThrowStatement : Statement { Expression *exp; ThrowStatement(Loc loc, Expression *exp); Statement *syntaxCopy(); Statement *semantic(Scope *sc); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); int fallOffEnd(); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); }; struct VolatileStatement : Statement { Statement *statement; EnclosingHandler* enclosinghandler; VolatileStatement(Loc loc, Statement *statement); Statement *syntaxCopy(); Statement *semantic(Scope *sc); Statements *flatten(Scope *sc); int fallOffEnd(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); }; struct GotoStatement : Statement { Identifier *ident; LabelDsymbol *label; TryFinallyStatement *tf; EnclosingHandler* enclosinghandler; GotoStatement(Loc loc, Identifier *ident); Statement *syntaxCopy(); Statement *semantic(Scope *sc); int fallOffEnd(); Expression *interpret(InterState *istate); void toIR(IRState *irs); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); GotoStatement *isGotoStatement() { return this; } }; struct LabelStatement : Statement { Identifier *ident; Statement *statement; TryFinallyStatement *tf; EnclosingHandler* enclosinghandler; block *lblock; // back end int isReturnLabel; LabelStatement(Loc loc, Identifier *ident, Statement *statement); Statement *syntaxCopy(); Statement *semantic(Scope *sc); Statements *flatten(Scope *sc); int usesEH(); int fallOffEnd(); int comeFrom(); Expression *interpret(InterState *istate); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); Statement *inlineScan(InlineScanState *iss); void toIR(IRState *irs); // LLVMDC llvm::BasicBlock* llvmBB; bool asmLabel; // for labels inside inline assembler }; struct LabelDsymbol : Dsymbol { LabelStatement *statement; LabelDsymbol(Identifier *ident); LabelDsymbol *isLabel(); }; struct AsmStatement : Statement { Token *tokens; code *asmcode; unsigned asmalign; // alignment of this statement unsigned refparam; // !=0 if function parameter is referenced unsigned naked; // !=0 if function is to be naked unsigned regs; // mask of registers modified AsmStatement(Loc loc, Token *tokens); Statement *syntaxCopy(); Statement *semantic(Scope *sc); int comeFrom(); void toCBuffer(OutBuffer *buf, HdrGenState *hgs); virtual AsmStatement *isAsmStatement() { return this; } void toIR(IRState *irs); // LLVMDC // non-zero if this is a branch, contains the target labels identifier Identifier* isBranchToLabel; }; struct AsmBlockStatement : CompoundStatement { EnclosingHandler* enclosinghandler; AsmBlockStatement(Loc loc, Statements *s); Statements *flatten(Scope *sc); Statement *syntaxCopy(); Statement *semantic(Scope *sc); CompoundStatement *isCompoundStatement() { return NULL; } AsmBlockStatement *isAsmBlockStatement() { return this; } void toIR(IRState *irs); }; #endif /* DMD_STATEMENT_H */