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0a19c2f1c7
wasm: update to wat syntax as of Jan 2019. Examples: - get_local -> local.get - i32.wrap/i64 -> i32.warp_i64 - etc The distinction between wat and wast has been clarified: - wat: textual format for web assembly modules - wast: superset of wat used in the specification to define tests.
105 lines
3.1 KiB
Plaintext
105 lines
3.1 KiB
Plaintext
(module $env
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(func $ENV_NEW (param $outer i32) (result i32)
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(LET $data ($HASHMAP) ;; allocate the data hashmap
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$env ($ALLOC (global.get $ENVIRONMENT_T) $data $outer 0))
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;; environment takes ownership
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($RELEASE $data)
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$env
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)
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(func $ENV_NEW_BINDS (param $outer i32 $binds i32 $exprs i32) (result i32)
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(LET $env ($ENV_NEW $outer)
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$key 0)
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;; process bindings
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(block $done
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(loop $loop
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(br_if $done (i32.eqz ($VAL0 $binds)))
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;; get/deref the key from binds
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(local.set $key ($MEM_VAL1_ptr $binds))
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(if (i32.eqz ($strcmp "&" ($to_String $key)))
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(then
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;; ENV_NEW_BIND_VARGS
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;; get/deref the key from the next element of binds
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(local.set $binds ($MEM_VAL0_ptr $binds))
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(local.set $key ($MEM_VAL1_ptr $binds))
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;; the value is the remaining list in exprs
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(local.set $exprs ($FORCE_SEQ_TYPE (global.get $LIST_T) $exprs))
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;; set the binding in the environment data
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(drop ($ENV_SET $env $key $exprs))
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;; list is owned by the environment
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($RELEASE $exprs)
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(br $done))
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(else
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;; ENV_NEW_BIND_1x1
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;; set the binding in the environment data
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(drop ($ENV_SET $env $key ($MEM_VAL1_ptr $exprs)))
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;; go to next element of binds and exprs
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(local.set $binds ($MEM_VAL0_ptr $binds))
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(local.set $exprs ($MEM_VAL0_ptr $exprs))))
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(br $loop)
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)
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)
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$env
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)
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(func $ENV_SET (param $env i32 $key i32 $value i32) (result i32)
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(LET $data ($MEM_VAL0_ptr $env))
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(i32.store ($VAL0_ptr $env) ($IDX ($ASSOC1 $data $key $value)))
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$value
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)
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(func $ENV_SET_S (param $env i32 $key i32 $value i32) (result i32)
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(LET $data ($MEM_VAL0_ptr $env))
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(i32.store ($VAL0_ptr $env) ($IDX ($ASSOC1_S $data $key $value)))
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$value
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)
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(func $ENV_FIND (param $env i32 $key i32) (result i64)
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(local $found_res i64)
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(LET $res 0
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$data 0)
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(block $done
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(loop $loop
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(local.set $data ($MEM_VAL0_ptr $env))
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(local.set $found_res ($HASHMAP_GET $data $key))
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;;; if (found)
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(if (i32.wrap_i64 (i64.shr_u $found_res (i64.const 32)))
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(then
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(local.set $res (i32.wrap_i64 $found_res))
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(br $done)))
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(local.set $env ($MEM_VAL1_ptr $env))
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(if (i32.eq $env (global.get $NIL))
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(then
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(local.set $env 0)
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(br $done)))
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(br $loop)
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)
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)
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;; combine res/env as hi 32/low 32 of i64
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(i64.or
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(i64.shl (i64.extend_i32_u $res) (i64.const 32))
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(i64.extend_i32_u $env))
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)
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(func $ENV_GET (param $env i32 $key i32) (result i32)
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(local $res_env i64)
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(LET $res 0)
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(local.set $res_env ($ENV_FIND $env $key))
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(local.set $env (i32.wrap_i64 $res_env))
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(local.set $res (i32.wrap_i64 (i64.shr_u $res_env (i64.const 32))))
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(if (i32.eqz $env)
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(then
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($THROW_STR_1 "'%s' not found" ($to_String $key))
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(return $res)))
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(return ($INC_REF $res))
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)
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)
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