82 lines
3.1 KiB
C
82 lines
3.1 KiB
C
#include "testparser.h"
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#include <assert.h>
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#include <string.h>
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#include "testutils.h"
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int main()
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{
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/* Grammar (simple):
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* token a; token b;
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* Start -> a b;
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*
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* Verifies that p_set_position() overrides the default (1, 1) starting
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* position so that lexed tokens and error positions are reported
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* relative to the caller-supplied position. */
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/* Baseline: without p_set_position(), positions start at (1, 1). */
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{
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char const * input = "ab";
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p_context_t * context = p_context_new((uint8_t const *)input, strlen(input));
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p_position_t pos = p_position(context);
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assert_eq(1u, (size_t)pos.row);
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assert_eq(1u, (size_t)pos.col);
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p_token_info_t token_info;
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assert(p_lex(context, &token_info) == P_SUCCESS);
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assert_eq((size_t)TOKEN_a, (size_t)token_info.token);
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assert_eq(1u, (size_t)token_info.position.row);
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assert_eq(1u, (size_t)token_info.position.col);
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p_context_delete(context);
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}
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/* p_set_position() overrides the initial position; subsequent lex calls
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* report token positions relative to the set position. */
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{
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char const * input = "ab";
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p_context_t * context = p_context_new((uint8_t const *)input, strlen(input));
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p_position_t initial = {5u, 20u};
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p_set_position(context, initial);
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p_position_t pos = p_position(context);
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assert_eq(5u, (size_t)pos.row);
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assert_eq(20u, (size_t)pos.col);
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p_token_info_t token_info;
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assert(p_lex(context, &token_info) == P_SUCCESS);
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assert_eq((size_t)TOKEN_a, (size_t)token_info.token);
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assert_eq(5u, (size_t)token_info.position.row);
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assert_eq(20u, (size_t)token_info.position.col);
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assert(p_lex(context, &token_info) == P_SUCCESS);
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assert_eq((size_t)TOKEN_b, (size_t)token_info.token);
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assert_eq(5u, (size_t)token_info.position.row);
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assert_eq(21u, (size_t)token_info.position.col);
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p_context_delete(context);
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}
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/* p_set_position() before a full parse: successful parse still works and
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* text_position tracking is relative to the set starting point. */
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{
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char const * input = "ab";
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p_context_t * context = p_context_new((uint8_t const *)input, strlen(input));
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p_position_t initial = {3u, 7u};
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p_set_position(context, initial);
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assert(p_parse_Start(context) == P_SUCCESS);
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p_context_delete(context);
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}
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/* p_set_position() before a parse that fails: the reported error
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* position is relative to the set starting point. */
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{
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char const * input = "aa";
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p_context_t * context = p_context_new((uint8_t const *)input, strlen(input));
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p_position_t initial = {10u, 2u};
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p_set_position(context, initial);
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assert(p_parse_Start(context) == P_UNEXPECTED_TOKEN);
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p_position_t err_pos = p_position(context);
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/* Error is at the second `a`, which is one column past the initial
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* column. */
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assert_eq(10u, (size_t)err_pos.row);
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assert_eq(3u, (size_t)err_pos.col);
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p_context_delete(context);
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}
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return 0;
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}
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