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Implement array functions with just an expression body

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This commit is contained in:
dcodeIO 2018-03-19 01:22:19 +01:00
parent 0fef69e445
commit 5323e64af9
6 changed files with 74 additions and 18 deletions
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2
dist/assemblyscript.js vendored
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2
dist/assemblyscript.js.map vendored
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27
src/compiler.ts
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@ -836,20 +836,27 @@ export class Compiler extends DiagnosticEmitter {
var typeRef = this.ensureFunctionType(instance.signature);
var module = this.module;
if (body) {
let returnType = instance.signature.returnType;
// compile body
let previousFunction = this.currentFunction;
this.currentFunction = instance;
let stmt = this.compileStatement(body);
// make sure all branches return
let allBranchesReturn = instance.flow.finalize();
let returnType = instance.signature.returnType;
if (returnType != Type.void && !allBranchesReturn) {
this.error(
DiagnosticCode.A_function_whose_declared_type_is_not_void_must_return_a_value,
assert(declaration.signature.returnType, "return type expected").range
);
let flow = instance.flow;
let stmt: ExpressionRef;
if (body.kind == NodeKind.EXPRESSION) { // () => expression
stmt = this.compileExpression((<ExpressionStatement>body).expression, returnType);
flow.set(FlowFlags.RETURNS);
} else {
assert(body.kind == NodeKind.BLOCK);
stmt = this.compileStatement(body);
// make sure all branches return
let allBranchesReturn = flow.finalize();
if (returnType != Type.void && !allBranchesReturn) {
this.error(
DiagnosticCode.A_function_whose_declared_type_is_not_void_must_return_a_value,
assert(declaration.signature.returnType, "return type expected").range
);
}
}
this.currentFunction = previousFunction;

28
tests/compiler/function-expression.optimized.wat
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@ -2,12 +2,14 @@
(type $ii (func (param i32) (result i32)))
(type $iiiiv (func (param i32 i32 i32 i32)))
(type $v (func))
(type $i (func (result i32)))
(import "env" "abort" (func $abort (param i32 i32 i32 i32)))
(global $function-expression/f1 (mut i32) (i32.const 0))
(global $function-expression/f2 (mut i32) (i32.const 1))
(global $function-expression/f3 (mut i32) (i32.const 2))
(table 3 3 anyfunc)
(elem (i32.const 0) $start~anonymous|0 $start~anonymous|0 $start~someName|2)
(global $function-expression/f4 (mut i32) (i32.const 3))
(table 4 4 anyfunc)
(elem (i32.const 0) $start~anonymous|0 $start~anonymous|0 $start~someName|2 $start~anonymous|3)
(memory $0 1)
(data (i32.const 4) "\16\00\00\00f\00u\00n\00c\00t\00i\00o\00n\00-\00e\00x\00p\00r\00e\00s\00s\00i\00o\00n\00.\00t\00s")
(export "memory" (memory $0))
@ -18,7 +20,10 @@
(func $start~someName|2 (; 2 ;) (type $v)
(nop)
)
(func $start (; 3 ;) (type $v)
(func $start~anonymous|3 (; 3 ;) (type $i) (result i32)
(i32.const 1)
)
(func $start (; 4 ;) (type $v)
(if
(i32.ne
(call_indirect (type $ii)
@ -58,5 +63,22 @@
(call_indirect (type $v)
(get_global $function-expression/f3)
)
(if
(i32.ne
(call_indirect (type $i)
(get_global $function-expression/f4)
)
(i32.const 1)
)
(block
(call $abort
(i32.const 0)
(i32.const 4)
(i32.const 16)
(i32.const 0)
)
(unreachable)
)
)
)
)

3
tests/compiler/function-expression.ts
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@ -11,3 +11,6 @@ assert(f2(2) == 2);
var f3 = function someName(): void {
};
f3();
var f4 = (): i32 => 1;
assert(f4() == 1);

30
tests/compiler/function-expression.untouched.wat
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@ -2,13 +2,15 @@
(type $ii (func (param i32) (result i32)))
(type $iiiiv (func (param i32 i32 i32 i32)))
(type $v (func))
(type $i (func (result i32)))
(import "env" "abort" (func $abort (param i32 i32 i32 i32)))
(global $function-expression/f1 (mut i32) (i32.const 0))
(global $function-expression/f2 (mut i32) (i32.const 1))
(global $function-expression/f3 (mut i32) (i32.const 2))
(global $function-expression/f4 (mut i32) (i32.const 3))
(global $HEAP_BASE i32 (i32.const 52))
(table 3 3 anyfunc)
(elem (i32.const 0) $start~anonymous|0 $start~anonymous|1 $start~someName|2)
(table 4 4 anyfunc)
(elem (i32.const 0) $start~anonymous|0 $start~anonymous|1 $start~someName|2 $start~anonymous|3)
(memory $0 1)
(data (i32.const 4) "\16\00\00\00f\00u\00n\00c\00t\00i\00o\00n\00-\00e\00x\00p\00r\00e\00s\00s\00i\00o\00n\00.\00t\00s\00")
(export "memory" (memory $0))
@ -25,7 +27,10 @@
)
(func $start~someName|2 (; 3 ;) (type $v)
)
(func $start (; 4 ;) (type $v)
(func $start~anonymous|3 (; 4 ;) (type $i) (result i32)
(i32.const 1)
)
(func $start (; 5 ;) (type $v)
(if
(i32.eqz
(i32.eq
@ -69,5 +74,24 @@
(call_indirect (type $v)
(get_global $function-expression/f3)
)
(if
(i32.eqz
(i32.eq
(call_indirect (type $i)
(get_global $function-expression/f4)
)
(i32.const 1)
)
)
(block
(call $abort
(i32.const 0)
(i32.const 4)
(i32.const 16)
(i32.const 0)
)
(unreachable)
)
)
)
)