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Add an error for missing initializers on default params, fixes #121; Fix detection of terminated switch cases and improve tests, fixes #122

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This commit is contained in:
dcodeIO
2018-05-27 12:24:16 +02:00
parent 113925fa7e
commit d0244a9b0f
9 changed files with 1366 additions and 148 deletions
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40
src/program.ts
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@ -3589,7 +3589,10 @@ export const enum FlowFlags {
/** This branch explicitly requests no bounds checking. */
UNCHECKED_CONTEXT = 1 << 11,
/** This branch returns a properly wrapped value. */
RETURNS_WRAPPED = 1 << 12
RETURNS_WRAPPED = 1 << 12,
/** This branch is terminated if any of these flags is set. */
TERMINATED = FlowFlags.RETURNS | FlowFlags.THROWS | FlowFlags.BREAKS | FlowFlags.CONTINUES
}
/** A control flow evaluator. */
@ -3639,7 +3642,7 @@ export class Flow {
/** Tests if this flow has the specified flag or flags. */
is(flag: FlowFlags): bool { return (this.flags & flag) == flag; }
/** Tests if this flow has one of the specified flags. */
isAny(flag: CommonFlags): bool { return (this.flags & flag) != 0; }
isAny(flag: FlowFlags): bool { return (this.flags & flag) != 0; }
/** Sets the specified flag or flags. */
set(flag: FlowFlags): void { this.flags |= flag; }
/** Unsets the specified flag or flags. */
@ -3662,7 +3665,7 @@ export class Flow {
}
/** Leaves the current branch or scope and returns the parent flow. */
leaveBranchOrScope(): Flow {
leaveBranchOrScope(propagate: bool = true): Flow {
var parent = assert(this.parent);
// Free block-scoped locals
@ -3676,22 +3679,23 @@ export class Flow {
}
// Propagate conditionaal flags to parent
if (this.is(FlowFlags.RETURNS)) {
parent.set(FlowFlags.CONDITIONALLY_RETURNS);
if (propagate) {
if (this.is(FlowFlags.RETURNS)) {
parent.set(FlowFlags.CONDITIONALLY_RETURNS);
}
if (this.is(FlowFlags.THROWS)) {
parent.set(FlowFlags.CONDITIONALLY_THROWS);
}
if (this.is(FlowFlags.BREAKS) && parent.breakLabel == this.breakLabel) {
parent.set(FlowFlags.CONDITIONALLY_BREAKS);
}
if (this.is(FlowFlags.CONTINUES) && parent.continueLabel == this.continueLabel) {
parent.set(FlowFlags.CONDITIONALLY_CONTINUES);
}
if (this.is(FlowFlags.ALLOCATES)) {
parent.set(FlowFlags.CONDITIONALLY_ALLOCATES);
}
}
if (this.is(FlowFlags.THROWS)) {
parent.set(FlowFlags.CONDITIONALLY_THROWS);
}
if (this.is(FlowFlags.BREAKS) && parent.breakLabel == this.breakLabel) {
parent.set(FlowFlags.CONDITIONALLY_BREAKS);
}
if (this.is(FlowFlags.CONTINUES) && parent.continueLabel == this.continueLabel) {
parent.set(FlowFlags.CONDITIONALLY_CONTINUES);
}
if (this.is(FlowFlags.ALLOCATES)) {
parent.set(FlowFlags.CONDITIONALLY_ALLOCATES);
}
return parent;
}