X-Git-Url: http://git.phpeclipse.com diff --git a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/ForStatement.java b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/ForStatement.java index 7d0f14c..bfef122 100644 --- a/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/ForStatement.java +++ b/net.sourceforge.phpeclipse/src/net/sourceforge/phpdt/internal/compiler/ast/ForStatement.java @@ -20,32 +20,34 @@ import net.sourceforge.phpdt.internal.compiler.lookup.BlockScope; import net.sourceforge.phpdt.internal.compiler.lookup.TypeBinding; public class ForStatement extends Statement { - + public Statement[] initializations; + public Expression condition; + public Statement[] increments; + public Statement action; - //when there is no local declaration, there is no need of a new scope - //scope is positionned either to a new scope, or to the "upper"scope (see resolveType) + // when there is no local declaration, there is no need of a new scope + // scope is positionned either to a new scope, or to the "upper"scope (see + // resolveType) public boolean neededScope; + public BlockScope scope; private Label breakLabel, continueLabel; // for local variables table attributes int preCondInitStateIndex = -1; + int condIfTrueInitStateIndex = -1; + int mergedInitStateIndex = -1; - public ForStatement( - Statement[] initializations, - Expression condition, - Statement[] increments, - Statement action, - boolean neededScope, - int s, - int e) { + public ForStatement(Statement[] initializations, Expression condition, + Statement[] increments, Statement action, boolean neededScope, + int s, int e) { this.sourceStart = s; this.sourceEnd = e; @@ -56,11 +58,9 @@ public class ForStatement extends Statement { this.neededScope = neededScope; } - public FlowInfo analyseCode( - BlockScope currentScope, - FlowContext flowContext, - FlowInfo flowInfo) { - + public FlowInfo analyseCode(BlockScope currentScope, + FlowContext flowContext, FlowInfo flowInfo) { + breakLabel = new Label(); continueLabel = new Label(); @@ -68,199 +68,219 @@ public class ForStatement extends Statement { if (initializations != null) { int count = initializations.length, i = 0; while (i < count) { - flowInfo = initializations[i++].analyseCode(scope, flowContext, flowInfo); + flowInfo = initializations[i++].analyseCode(scope, flowContext, + flowInfo); } } - preCondInitStateIndex = - currentScope.methodScope().recordInitializationStates(flowInfo); + preCondInitStateIndex = currentScope.methodScope() + .recordInitializationStates(flowInfo); Constant cst = this.condition == null ? null : this.condition.constant; - boolean isConditionTrue = cst == null || (cst != NotAConstant && cst.booleanValue() == true); - boolean isConditionFalse = cst != null && (cst != NotAConstant && cst.booleanValue() == false); + boolean isConditionTrue = cst == null + || (cst != NotAConstant && cst.booleanValue() == true); + boolean isConditionFalse = cst != null + && (cst != NotAConstant && cst.booleanValue() == false); + + cst = this.condition == null ? null : this.condition + .optimizedBooleanConstant(); + boolean isConditionOptimizedTrue = cst == null + || (cst != NotAConstant && cst.booleanValue() == true); + boolean isConditionOptimizedFalse = cst != null + && (cst != NotAConstant && cst.booleanValue() == false); - cst = this.condition == null ? null : this.condition.optimizedBooleanConstant(); - boolean isConditionOptimizedTrue = cst == null || (cst != NotAConstant && cst.booleanValue() == true); - boolean isConditionOptimizedFalse = cst != null && (cst != NotAConstant && cst.booleanValue() == false); - // process the condition LoopingFlowContext condLoopContext = null; if (condition != null) { if (!isConditionTrue) { - flowInfo = - condition.analyseCode( - scope, - (condLoopContext = - new LoopingFlowContext(flowContext, this, null, null, scope)), - flowInfo); + flowInfo = condition.analyseCode(scope, + (condLoopContext = new LoopingFlowContext(flowContext, + this, null, null, scope)), flowInfo); } } // process the action LoopingFlowContext loopingContext; FlowInfo actionInfo; - if (action == null ){ -// || (action.isEmptyBlock() && currentScope.environment().options.complianceLevel <= CompilerOptions.JDK1_3)) { + if (action == null) { + // || (action.isEmptyBlock() && + // currentScope.environment().options.complianceLevel <= + // CompilerOptions.JDK1_3)) { if (condLoopContext != null) - condLoopContext.complainOnFinalAssignmentsInLoop(scope, flowInfo); + condLoopContext.complainOnFinalAssignmentsInLoop(scope, + flowInfo); if (isConditionTrue) { return FlowInfo.DEAD_END; } else { - if (isConditionFalse){ + if (isConditionFalse) { continueLabel = null; // for(;false;p()); } actionInfo = flowInfo.initsWhenTrue().copy(); - loopingContext = - new LoopingFlowContext(flowContext, this, breakLabel, continueLabel, scope); + loopingContext = new LoopingFlowContext(flowContext, this, + breakLabel, continueLabel, scope); } } else { - loopingContext = - new LoopingFlowContext(flowContext, this, breakLabel, continueLabel, scope); + loopingContext = new LoopingFlowContext(flowContext, this, + breakLabel, continueLabel, scope); FlowInfo initsWhenTrue = flowInfo.initsWhenTrue(); - condIfTrueInitStateIndex = - currentScope.methodScope().recordInitializationStates(initsWhenTrue); + condIfTrueInitStateIndex = currentScope.methodScope() + .recordInitializationStates(initsWhenTrue); - if (isConditionFalse) { - actionInfo = FlowInfo.DEAD_END; - } else { - actionInfo = initsWhenTrue.copy(); - if (isConditionOptimizedFalse){ - actionInfo.setReachMode(FlowInfo.UNREACHABLE); - } + if (isConditionFalse) { + actionInfo = FlowInfo.DEAD_END; + } else { + actionInfo = initsWhenTrue.copy(); + if (isConditionOptimizedFalse) { + actionInfo.setReachMode(FlowInfo.UNREACHABLE); } + } if (!actionInfo.complainIfUnreachable(action, scope, false)) { - actionInfo = action.analyseCode(scope, loopingContext, actionInfo); + actionInfo = action.analyseCode(scope, loopingContext, + actionInfo); } - // code generation can be optimized when no need to continue in the loop - if (!actionInfo.isReachable() && !loopingContext.initsOnContinue.isReachable()) { + // code generation can be optimized when no need to continue in the + // loop + if (!actionInfo.isReachable() + && !loopingContext.initsOnContinue.isReachable()) { continueLabel = null; } else { if (condLoopContext != null) - condLoopContext.complainOnFinalAssignmentsInLoop(scope, flowInfo); - loopingContext.complainOnFinalAssignmentsInLoop(scope, actionInfo); - actionInfo = - actionInfo.mergedWith(loopingContext.initsOnContinue.unconditionalInits()); + condLoopContext.complainOnFinalAssignmentsInLoop(scope, + flowInfo); + loopingContext.complainOnFinalAssignmentsInLoop(scope, + actionInfo); + actionInfo = actionInfo + .mergedWith(loopingContext.initsOnContinue + .unconditionalInits()); // for increments } } if ((continueLabel != null) && (increments != null)) { - LoopingFlowContext loopContext = - new LoopingFlowContext(flowContext, this, null, null, scope); + LoopingFlowContext loopContext = new LoopingFlowContext( + flowContext, this, null, null, scope); int i = 0, count = increments.length; while (i < count) - actionInfo = increments[i++].analyseCode(scope, loopContext, actionInfo); + actionInfo = increments[i++].analyseCode(scope, loopContext, + actionInfo); loopContext.complainOnFinalAssignmentsInLoop(scope, actionInfo); } // infinite loop FlowInfo mergedInfo; if (isConditionOptimizedTrue) { - mergedInitStateIndex = - currentScope.methodScope().recordInitializationStates( - mergedInfo = loopingContext.initsOnBreak); + mergedInitStateIndex = currentScope.methodScope() + .recordInitializationStates( + mergedInfo = loopingContext.initsOnBreak); return mergedInfo; } - //end of loop: either condition false or break - mergedInfo = - flowInfo.initsWhenFalse().unconditionalInits().mergedWith( + // end of loop: either condition false or break + mergedInfo = flowInfo.initsWhenFalse().unconditionalInits().mergedWith( loopingContext.initsOnBreak.unconditionalInits()); - if (isConditionOptimizedTrue && continueLabel == null){ + if (isConditionOptimizedTrue && continueLabel == null) { mergedInfo.setReachMode(FlowInfo.UNREACHABLE); } - mergedInitStateIndex = - currentScope.methodScope().recordInitializationStates(mergedInfo); + mergedInitStateIndex = currentScope.methodScope() + .recordInitializationStates(mergedInfo); return mergedInfo; } /** * For statement code generation - * - * @param currentScope net.sourceforge.phpdt.internal.compiler.lookup.BlockScope - * @param codeStream net.sourceforge.phpdt.internal.compiler.codegen.CodeStream + * + * @param currentScope + * net.sourceforge.phpdt.internal.compiler.lookup.BlockScope + * @param codeStream + * net.sourceforge.phpdt.internal.compiler.codegen.CodeStream */ -// public void generateCode(BlockScope currentScope, CodeStream codeStream) { -// -// if ((bits & IsReachableMASK) == 0) { -// return; -// } -// int pc = codeStream.position; -// -// // generate the initializations -// if (initializations != null) { -// for (int i = 0, max = initializations.length; i < max; i++) { -// initializations[i].generateCode(scope, codeStream); -// } -// } -// -// // label management -// Label actionLabel = new Label(codeStream); -// Label conditionLabel = new Label(codeStream); -// breakLabel.codeStream = codeStream; -// if (continueLabel != null) { -// continueLabel.codeStream = codeStream; -// } -// // jump over the actionBlock -// if ((condition != null) -// && (condition.constant == NotAConstant) -// && !((action == null || action.isEmptyBlock()) && (increments == null))) { -// int jumpPC = codeStream.position; -// codeStream.goto_(conditionLabel); -// codeStream.recordPositionsFrom(jumpPC, condition.sourceStart); -// } -// // generate the loop action -// actionLabel.place(); -// if (action != null) { -// // Required to fix 1PR0XVS: LFRE:WINNT - Compiler: variable table for method appears incorrect -// if (condIfTrueInitStateIndex != -1) { -// // insert all locals initialized inside the condition into the action generated prior to the condition -// codeStream.addDefinitelyAssignedVariables( -// currentScope, -// condIfTrueInitStateIndex); -// } -// action.generateCode(scope, codeStream); -// } -// // continuation point -// if (continueLabel != null) { -// continueLabel.place(); -// // generate the increments for next iteration -// if (increments != null) { -// for (int i = 0, max = increments.length; i < max; i++) { -// increments[i].generateCode(scope, codeStream); -// } -// } -// } -// -// // May loose some local variable initializations : affecting the local variable attributes -// if (preCondInitStateIndex != -1) { -// codeStream.removeNotDefinitelyAssignedVariables( -// currentScope, -// preCondInitStateIndex); -// } -// -// // generate the condition -// conditionLabel.place(); -// if ((condition != null) && (condition.constant == NotAConstant)) { -// condition.generateOptimizedBoolean(scope, codeStream, actionLabel, null, true); -// } else { -// if (continueLabel != null) { -// codeStream.goto_(actionLabel); -// } -// } -// breakLabel.place(); -// -// // May loose some local variable initializations : affecting the local variable attributes -// if (neededScope) { -// codeStream.exitUserScope(scope); -// } -// if (mergedInitStateIndex != -1) { -// codeStream.removeNotDefinitelyAssignedVariables( -// currentScope, -// mergedInitStateIndex); -// } -// codeStream.recordPositionsFrom(pc, this.sourceStart); -// } - + // public void generateCode(BlockScope currentScope, CodeStream codeStream) + // { + // + // if ((bits & IsReachableMASK) == 0) { + // return; + // } + // int pc = codeStream.position; + // + // // generate the initializations + // if (initializations != null) { + // for (int i = 0, max = initializations.length; i < max; i++) { + // initializations[i].generateCode(scope, codeStream); + // } + // } + // + // // label management + // Label actionLabel = new Label(codeStream); + // Label conditionLabel = new Label(codeStream); + // breakLabel.codeStream = codeStream; + // if (continueLabel != null) { + // continueLabel.codeStream = codeStream; + // } + // // jump over the actionBlock + // if ((condition != null) + // && (condition.constant == NotAConstant) + // && !((action == null || action.isEmptyBlock()) && (increments == null))) + // { + // int jumpPC = codeStream.position; + // codeStream.goto_(conditionLabel); + // codeStream.recordPositionsFrom(jumpPC, condition.sourceStart); + // } + // // generate the loop action + // actionLabel.place(); + // if (action != null) { + // // Required to fix 1PR0XVS: LFRE:WINNT - Compiler: variable table for + // method appears incorrect + // if (condIfTrueInitStateIndex != -1) { + // // insert all locals initialized inside the condition into the action + // generated prior to the condition + // codeStream.addDefinitelyAssignedVariables( + // currentScope, + // condIfTrueInitStateIndex); + // } + // action.generateCode(scope, codeStream); + // } + // // continuation point + // if (continueLabel != null) { + // continueLabel.place(); + // // generate the increments for next iteration + // if (increments != null) { + // for (int i = 0, max = increments.length; i < max; i++) { + // increments[i].generateCode(scope, codeStream); + // } + // } + // } + // + // // May loose some local variable initializations : affecting the local + // variable attributes + // if (preCondInitStateIndex != -1) { + // codeStream.removeNotDefinitelyAssignedVariables( + // currentScope, + // preCondInitStateIndex); + // } + // + // // generate the condition + // conditionLabel.place(); + // if ((condition != null) && (condition.constant == NotAConstant)) { + // condition.generateOptimizedBoolean(scope, codeStream, actionLabel, null, + // true); + // } else { + // if (continueLabel != null) { + // codeStream.goto_(actionLabel); + // } + // } + // breakLabel.place(); + // + // // May loose some local variable initializations : affecting the local + // variable attributes + // if (neededScope) { + // codeStream.exitUserScope(scope); + // } + // if (mergedInitStateIndex != -1) { + // codeStream.removeNotDefinitelyAssignedVariables( + // currentScope, + // mergedInitStateIndex); + // } + // codeStream.recordPositionsFrom(pc, this.sourceStart); + // } public void resetStateForCodeGeneration() { if (this.breakLabel != null) { this.breakLabel.resetStateForCodeGeneration(); @@ -269,30 +289,34 @@ public class ForStatement extends Statement { this.continueLabel.resetStateForCodeGeneration(); } } + public StringBuffer printStatement(int tab, StringBuffer output) { printIndent(tab, output).append("for ("); //$NON-NLS-1$ - //inits + // inits if (initializations != null) { for (int i = 0; i < initializations.length; i++) { - //nice only with expressions - if (i > 0) output.append(", "); //$NON-NLS-1$ + // nice only with expressions + if (i > 0) + output.append(", "); //$NON-NLS-1$ initializations[i].print(0, output); } } output.append("; "); //$NON-NLS-1$ - //cond - if (condition != null) condition.printExpression(0, output); + // cond + if (condition != null) + condition.printExpression(0, output); output.append("; "); //$NON-NLS-1$ - //updates + // updates if (increments != null) { for (int i = 0; i < increments.length; i++) { - if (i > 0) output.append(", "); //$NON-NLS-1$ + if (i > 0) + output.append(", "); //$NON-NLS-1$ increments[i].print(0, output); } } output.append(") "); //$NON-NLS-1$ - //block + // block if (action == null) output.append(';'); else { @@ -301,6 +325,7 @@ public class ForStatement extends Statement { } return output.append(';'); } + public void resolve(BlockScope upperScope) { // use the scope that will hold the init declarations @@ -309,7 +334,8 @@ public class ForStatement extends Statement { for (int i = 0, length = initializations.length; i < length; i++) initializations[i].resolve(scope); if (condition != null) { - TypeBinding type = condition.resolveTypeExpecting(scope, BooleanBinding); + TypeBinding type = condition.resolveTypeExpecting(scope, + BooleanBinding); condition.implicitWidening(type, type); } if (increments != null) @@ -323,42 +349,43 @@ public class ForStatement extends Statement { String s = tabString(tab) + "for ("; //$NON-NLS-1$ if (!neededScope) - s = s + " //--NO upperscope scope needed\n" + tabString(tab) + " "; //$NON-NLS-2$ //$NON-NLS-1$ - //inits + s = s + + " //--NO upperscope scope needed\n" + tabString(tab) + " "; //$NON-NLS-2$ //$NON-NLS-1$ + // inits if (initializations != null) { for (int i = 0; i < initializations.length; i++) { - //nice only with expressions + // nice only with expressions s = s + initializations[i].toString(0); if (i != (initializations.length - 1)) s = s + " , "; //$NON-NLS-1$ } - }; + } + ; s = s + "; "; //$NON-NLS-1$ - //cond + // cond if (condition != null) s = s + condition.toStringExpression(); s = s + "; "; //$NON-NLS-1$ - //updates + // updates if (increments != null) { for (int i = 0; i < increments.length; i++) { - //nice only with expressions + // nice only with expressions s = s + increments[i].toString(0); if (i != (increments.length - 1)) s = s + " , "; //$NON-NLS-1$ } - }; + } + ; s = s + ") "; //$NON-NLS-1$ - //block + // block if (action == null) s = s + "{}"; //$NON-NLS-1$ else s = s + "\n" + action.toString(tab + 1); //$NON-NLS-1$ return s; } - - public void traverse( - ASTVisitor visitor, - BlockScope blockScope) { + + public void traverse(ASTVisitor visitor, BlockScope blockScope) { if (visitor.visit(this, blockScope)) { if (initializations != null) {