Use .wat instead of .wasm in tree (#5282)

Fixes #5194

Cargo.toml

@@ -293,6 +293,7 @@ toml = "0.5.8"
 ureq = "2.3.0"
 walkdir = "2.3.2"
 wasmi = "0.31.2"
+wat = "1"
 
 # Size optimized builds
 [profile.release-opt-size]

components/collections/codepointtrie_builder/Cargo.toml

@@ -31,7 +31,7 @@ independent = true
 [features]
 # Use the wasm builder
 default = ["wasm"]
-wasm = ["dep:wasmi"]
+wasm = ["dep:wasmi", "dep:wat"]
 # Use the ICU4C builder
 # needs the ICU4C_LIB_PATH variable set and pointing to an ICU4C lib folder
 # containing dylibs. If you want to use staticlibs, set ICU4C_LINK_STATICALLY.
@@ -42,6 +42,7 @@ icu4c = []
 icu_collections = { workspace = true, features = ["serde"] }
 zerovec = { workspace = true }
 wasmi = { workspace = true, optional = true }
+wat = { workspace = true, optional = true }
 
 [dev-dependencies]
 icu = { path = "../../icu" }

components/collections/codepointtrie_builder/cpp/.gitignore

@@ -1,5 +1,6 @@
 list_to_ucptrie
 list_to_ucptrie.wasm
 list_to_ucptrie.wat
+ucptrie_wrap.wasm
 icu4c_obj/
 wasm_obj/

components/collections/codepointtrie_builder/cpp/Makefile

@@ -4,6 +4,7 @@
 
 ICU4C_SOURCE ?= $(HOME)/icu/icu4c/source
 CXX := clang++
+WASM2WAT := wasm2wat
 
 .PHONY: all clean
 all: ucptrie_wrap.wasm
@@ -74,8 +75,12 @@ ucptrie_wrap.wasm: $(wasm_obj_files)
 		-I$(ICU4C_SOURCE)/common \
 		-I$(ICU4C_SOURCE)/tools/toolutil \
 		$(wasm_obj_files) \
+		-g \
 		-o ucptrie_wrap.wasm
 
+%.wat: %.wasm
+	$(WASM2WAT) $< -o $@
+
 clean:
 	rm -rf wasm_obj
 	rm -f ucptrie_wrap.wasm