mirror of
https://github.com/fluencelabs/wasmer
synced 2024-12-13 06:15:33 +00:00
59 lines
1.9 KiB
C
59 lines
1.9 KiB
C
#include <stdio.h>
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#include "../wasmer.h"
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#include <assert.h>
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#include <stdint.h>
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#include <string.h>
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int main()
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{
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// Read the wasm file bytes
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FILE *file = fopen("assets/sum.wasm", "r");
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fseek(file, 0, SEEK_END);
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long len = ftell(file);
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uint8_t *bytes = malloc(len);
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fseek(file, 0, SEEK_SET);
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fread(bytes, 1, len, file);
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fclose(file);
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wasmer_import_t imports[] = {};
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wasmer_instance_t *instance = NULL;
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wasmer_result_t compile_result = wasmer_instantiate(&instance, bytes, len, imports, 0);
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printf("Compile result: %d\n", compile_result);
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assert(compile_result == WASMER_OK);
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wasmer_value_t param_one;
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param_one.tag = WASM_I32;
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param_one.value.I32 = 7;
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wasmer_value_t param_two;
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param_two.tag = WASM_I32;
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param_two.value.I32 = 8;
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wasmer_value_t params[] = {param_one, param_two};
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wasmer_value_t result_one;
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wasmer_value_t results[] = {result_one};
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wasmer_result_t call_result = wasmer_instance_call(instance, "sum", params, 2, results, 1);
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printf("Call result: %d\n", call_result);
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printf("Result: %d\n", results[0].value.I32);
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assert(results[0].value.I32 == 15);
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assert(call_result == WASMER_OK);
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wasmer_result_t call_result2 = wasmer_instance_call(instance, "sum", params, 1, results, 1);
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printf("Call result bad: %d\n", call_result2);
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assert(call_result2 == WASMER_ERROR);
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int error_len = wasmer_last_error_length();
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printf("Error len: `%d`\n", error_len);
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char *error_str = malloc(error_len);
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int error_result = wasmer_last_error_message(error_str, error_len);
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assert(error_len == error_result);
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printf("Error str: `%s`\n", error_str);
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assert(0 == strcmp(error_str, "Call error: Parameters of type [I32] did not match signature [I32, I32] -> [I32]"));
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free(error_str);
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printf("Destroy instance\n");
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wasmer_instance_destroy(instance);
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return 0;
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}
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