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check_expression.c
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check_expression.c
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/* vi:set ts=4 sw=4 expandtab:
*
* Copyright 2016, Chris Leishman (http://github.com/cleishm)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "../config.h"
#include "../src/lib/cypher-parser.h"
#include "memstream.h"
#include <check.h>
#include <errno.h>
#include <unistd.h>
static cypher_parse_result_t *result;
static char *memstream_buffer;
static size_t memstream_size;
static FILE *memstream;
static void setup(void)
{
result = NULL;
memstream = open_memstream(&memstream_buffer, &memstream_size);
fputc('\n', memstream);
}
static void teardown(void)
{
cypher_parse_result_free(result);
fclose(memstream);
free(memstream_buffer);
}
START_TEST (parse_simple_unary_operators)
{
struct cypher_input_position last = cypher_input_position_zero;
result = cypher_parse("RETURN -1, +1, NOT false;", &last, NULL, 0);
ck_assert_ptr_ne(result, NULL);
ck_assert_int_eq(last.offset, 25);
ck_assert(cypher_parse_result_fprint_ast(result, memstream, 0, NULL, 0) == 0);
fflush(memstream);
const char *expected = "\n"
" @0 0..25 statement body=@1\n"
" @1 0..25 > query clauses=[@2]\n"
" @2 0..24 > > RETURN projections=[@3, @7, @11]\n"
" @3 7..9 > > > projection expression=@4, alias=@6\n"
" @4 7..9 > > > > unary operator - @5\n"
" @5 8..9 > > > > > integer 1\n"
" @6 7..9 > > > > identifier `-1`\n"
" @7 11..13 > > > projection expression=@8, alias=@10\n"
" @8 11..13 > > > > unary operator + @9\n"
" @9 12..13 > > > > > integer 1\n"
"@10 11..13 > > > > identifier `+1`\n"
"@11 15..24 > > > projection expression=@12, alias=@14\n"
"@12 15..24 > > > > unary operator NOT @13\n"
"@13 19..24 > > > > > FALSE\n"
"@14 15..24 > > > > identifier `NOT false`\n";
ck_assert_str_eq(memstream_buffer, expected);
const cypher_astnode_t *ast = cypher_parse_result_get_directive(result, 0);
const cypher_astnode_t *query = cypher_ast_statement_get_body(ast);
const cypher_astnode_t *clause = cypher_ast_query_get_clause(query, 0);
ck_assert_int_eq(cypher_astnode_type(clause), CYPHER_AST_RETURN);
ck_assert_int_eq(cypher_ast_return_nprojections(clause), 3);
const cypher_astnode_t *proj = cypher_ast_return_get_projection(clause, 0);
ck_assert_int_eq(cypher_astnode_type(proj), CYPHER_AST_PROJECTION);
const cypher_astnode_t *exp = cypher_ast_projection_get_expression(proj);
ck_assert_int_eq(cypher_astnode_type(exp), CYPHER_AST_UNARY_OPERATOR);
ck_assert_ptr_eq(cypher_ast_unary_operator_get_operator(exp),
CYPHER_OP_UNARY_MINUS);
const cypher_astnode_t *arg = cypher_ast_unary_operator_get_argument(exp);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_INTEGER);
proj = cypher_ast_return_get_projection(clause, 1);
ck_assert_int_eq(cypher_astnode_type(proj), CYPHER_AST_PROJECTION);
exp = cypher_ast_projection_get_expression(proj);
ck_assert_int_eq(cypher_astnode_type(exp), CYPHER_AST_UNARY_OPERATOR);
ck_assert_ptr_eq(cypher_ast_unary_operator_get_operator(exp),
CYPHER_OP_UNARY_PLUS);
arg = cypher_ast_unary_operator_get_argument(exp);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_INTEGER);
proj = cypher_ast_return_get_projection(clause, 2);
ck_assert_int_eq(cypher_astnode_type(proj), CYPHER_AST_PROJECTION);
exp = cypher_ast_projection_get_expression(proj);
ck_assert_int_eq(cypher_astnode_type(exp), CYPHER_AST_UNARY_OPERATOR);
ck_assert_ptr_eq(cypher_ast_unary_operator_get_operator(exp),
CYPHER_OP_NOT);
arg = cypher_ast_unary_operator_get_argument(exp);
ck_assert(cypher_astnode_instanceof(arg, CYPHER_AST_BOOLEAN));
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_FALSE);
}
END_TEST
START_TEST (parse_simple_binary_operators)
{
struct cypher_input_position last = cypher_input_position_zero;
result = cypher_parse("RETURN a-1, 1 / b, c STARTS WITH 'foo';",
&last, NULL, 0);
ck_assert_ptr_ne(result, NULL);
ck_assert_int_eq(last.offset, 39);
ck_assert(cypher_parse_result_fprint_ast(result, memstream, 0, NULL, 0) == 0);
fflush(memstream);
const char *expected = "\n"
" @0 0..39 statement body=@1\n"
" @1 0..39 > query clauses=[@2]\n"
" @2 0..38 > > RETURN projections=[@3, @8, @13]\n"
" @3 7..10 > > > projection expression=@4, alias=@7\n"
" @4 7..10 > > > > binary operator @5 - @6\n"
" @5 7..8 > > > > > identifier `a`\n"
" @6 9..10 > > > > > integer 1\n"
" @7 7..10 > > > > identifier `a-1`\n"
" @8 12..17 > > > projection expression=@9, alias=@12\n"
" @9 12..17 > > > > binary operator @10 / @11\n"
"@10 12..13 > > > > > integer 1\n"
"@11 16..17 > > > > > identifier `b`\n"
"@12 12..17 > > > > identifier `1 / b`\n"
"@13 19..38 > > > projection expression=@14, alias=@17\n"
"@14 19..38 > > > > binary operator @15 STARTS WITH @16\n"
"@15 19..20 > > > > > identifier `c`\n"
"@16 33..38 > > > > > string \"foo\"\n"
"@17 19..38 > > > > identifier `c STARTS WITH 'foo'`\n";
ck_assert_str_eq(memstream_buffer, expected);
const cypher_astnode_t *ast = cypher_parse_result_get_directive(result, 0);
const cypher_astnode_t *query = cypher_ast_statement_get_body(ast);
const cypher_astnode_t *clause = cypher_ast_query_get_clause(query, 0);
ck_assert_int_eq(cypher_astnode_type(clause), CYPHER_AST_RETURN);
ck_assert_int_eq(cypher_ast_return_nprojections(clause), 3);
const cypher_astnode_t *proj = cypher_ast_return_get_projection(clause, 0);
ck_assert_int_eq(cypher_astnode_type(proj), CYPHER_AST_PROJECTION);
const cypher_astnode_t *exp = cypher_ast_projection_get_expression(proj);
ck_assert_int_eq(cypher_astnode_type(exp), CYPHER_AST_BINARY_OPERATOR);
ck_assert_ptr_eq(cypher_ast_binary_operator_get_operator(exp),
CYPHER_OP_MINUS);
const cypher_astnode_t *arg = cypher_ast_binary_operator_get_argument1(exp);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_IDENTIFIER);
arg = cypher_ast_binary_operator_get_argument2(exp);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_INTEGER);
proj = cypher_ast_return_get_projection(clause, 1);
ck_assert_int_eq(cypher_astnode_type(proj), CYPHER_AST_PROJECTION);
exp = cypher_ast_projection_get_expression(proj);
ck_assert_int_eq(cypher_astnode_type(exp), CYPHER_AST_BINARY_OPERATOR);
ck_assert_ptr_eq(cypher_ast_binary_operator_get_operator(exp),
CYPHER_OP_DIV);
arg = cypher_ast_binary_operator_get_argument1(exp);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_INTEGER);
arg = cypher_ast_binary_operator_get_argument2(exp);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_IDENTIFIER);
proj = cypher_ast_return_get_projection(clause, 2);
ck_assert_int_eq(cypher_astnode_type(proj), CYPHER_AST_PROJECTION);
exp = cypher_ast_projection_get_expression(proj);
ck_assert_int_eq(cypher_astnode_type(exp), CYPHER_AST_BINARY_OPERATOR);
ck_assert_ptr_eq(cypher_ast_binary_operator_get_operator(exp),
CYPHER_OP_STARTS_WITH);
arg = cypher_ast_binary_operator_get_argument1(exp);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_IDENTIFIER);
arg = cypher_ast_binary_operator_get_argument2(exp);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_STRING);
}
END_TEST
START_TEST (parse_unary_and_binary_operators)
{
struct cypher_input_position last = cypher_input_position_zero;
result = cypher_parse("RETURN NOT 1 - 2 AND 3;", &last, NULL, 0);
ck_assert_ptr_ne(result, NULL);
ck_assert_int_eq(last.offset, 23);
ck_assert(cypher_parse_result_fprint_ast(result, memstream, 0, NULL, 0) == 0);
fflush(memstream);
const char *expected = "\n"
" @0 0..23 statement body=@1\n"
" @1 0..23 > query clauses=[@2]\n"
" @2 0..22 > > RETURN projections=[@3]\n"
" @3 7..22 > > > projection expression=@4, alias=@10\n"
" @4 7..22 > > > > binary operator @5 AND @9\n"
" @5 7..17 > > > > > unary operator NOT @6\n"
" @6 11..17 > > > > > > binary operator @7 - @8\n"
" @7 11..12 > > > > > > > integer 1\n"
" @8 15..16 > > > > > > > integer 2\n"
" @9 21..22 > > > > > integer 3\n"
"@10 7..22 > > > > identifier `NOT 1 - 2 AND 3`\n";
ck_assert_str_eq(memstream_buffer, expected);
}
END_TEST
START_TEST (parse_comparison_operators)
{
struct cypher_input_position last = cypher_input_position_zero;
result = cypher_parse("RETURN a < 1, 4 > b > 2, 2 <= c >= 5;",
&last, NULL, 0);
ck_assert_ptr_ne(result, NULL);
ck_assert_int_eq(last.offset, 37);
ck_assert(cypher_parse_result_fprint_ast(result, memstream, 0, NULL, 0) == 0);
fflush(memstream);
const char *expected = "\n"
" @0 0..37 statement body=@1\n"
" @1 0..37 > query clauses=[@2]\n"
" @2 0..36 > > RETURN projections=[@3, @8, @14]\n"
" @3 7..12 > > > projection expression=@4, alias=@7\n"
" @4 7..12 > > > > comparison @5 < @6\n"
" @5 7..8 > > > > > identifier `a`\n"
" @6 11..12 > > > > > integer 1\n"
" @7 7..12 > > > > identifier `a < 1`\n"
" @8 14..23 > > > projection expression=@9, alias=@13\n"
" @9 14..23 > > > > comparison @10 > @11 > @12\n"
"@10 14..15 > > > > > integer 4\n"
"@11 18..19 > > > > > identifier `b`\n"
"@12 22..23 > > > > > integer 2\n"
"@13 14..23 > > > > identifier `4 > b > 2`\n"
"@14 25..36 > > > projection expression=@15, alias=@19\n"
"@15 25..36 > > > > comparison @16 <= @17 >= @18\n"
"@16 25..26 > > > > > integer 2\n"
"@17 30..31 > > > > > identifier `c`\n"
"@18 35..36 > > > > > integer 5\n"
"@19 25..36 > > > > identifier `2 <= c >= 5`\n";
ck_assert_str_eq(memstream_buffer, expected);
const cypher_astnode_t *ast = cypher_parse_result_get_directive(result, 0);
const cypher_astnode_t *query = cypher_ast_statement_get_body(ast);
const cypher_astnode_t *clause = cypher_ast_query_get_clause(query, 0);
ck_assert_int_eq(cypher_astnode_type(clause), CYPHER_AST_RETURN);
ck_assert_int_eq(cypher_ast_return_nprojections(clause), 3);
const cypher_astnode_t *proj = cypher_ast_return_get_projection(clause, 0);
ck_assert_int_eq(cypher_astnode_type(proj), CYPHER_AST_PROJECTION);
const cypher_astnode_t *exp = cypher_ast_projection_get_expression(proj);
ck_assert_int_eq(cypher_astnode_type(exp), CYPHER_AST_COMPARISON);
ck_assert_int_eq(cypher_ast_comparison_get_length(exp), 1);
const cypher_astnode_t *arg = cypher_ast_comparison_get_argument(exp, 0);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_IDENTIFIER);
ck_assert_ptr_eq(cypher_ast_comparison_get_operator(exp, 0),
CYPHER_OP_LT);
arg = cypher_ast_comparison_get_argument(exp, 1);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_INTEGER);
ck_assert_ptr_eq(cypher_ast_comparison_get_operator(exp, 1), NULL);
ck_assert_ptr_eq(cypher_ast_comparison_get_argument(exp, 2), NULL);
proj = cypher_ast_return_get_projection(clause, 1);
ck_assert_int_eq(cypher_astnode_type(proj), CYPHER_AST_PROJECTION);
exp = cypher_ast_projection_get_expression(proj);
ck_assert_int_eq(cypher_astnode_type(exp), CYPHER_AST_COMPARISON);
ck_assert_int_eq(cypher_ast_comparison_get_length(exp), 2);
arg = cypher_ast_comparison_get_argument(exp, 0);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_INTEGER);
ck_assert_ptr_eq(cypher_ast_comparison_get_operator(exp, 0),
CYPHER_OP_GT);
arg = cypher_ast_comparison_get_argument(exp, 1);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_IDENTIFIER);
ck_assert_ptr_eq(cypher_ast_comparison_get_operator(exp, 1),
CYPHER_OP_GT);
arg = cypher_ast_comparison_get_argument(exp, 2);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_INTEGER);
ck_assert_ptr_eq(cypher_ast_comparison_get_operator(exp, 2), NULL);
ck_assert_ptr_eq(cypher_ast_comparison_get_argument(exp, 3), NULL);
proj = cypher_ast_return_get_projection(clause, 2);
ck_assert_int_eq(cypher_astnode_type(proj), CYPHER_AST_PROJECTION);
exp = cypher_ast_projection_get_expression(proj);
ck_assert_int_eq(cypher_astnode_type(exp), CYPHER_AST_COMPARISON);
ck_assert_int_eq(cypher_ast_comparison_get_length(exp), 2);
arg = cypher_ast_comparison_get_argument(exp, 0);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_INTEGER);
ck_assert_ptr_eq(cypher_ast_comparison_get_operator(exp, 0),
CYPHER_OP_LTE);
arg = cypher_ast_comparison_get_argument(exp, 1);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_IDENTIFIER);
ck_assert_ptr_eq(cypher_ast_comparison_get_operator(exp, 1),
CYPHER_OP_GTE);
arg = cypher_ast_comparison_get_argument(exp, 2);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_INTEGER);
ck_assert_ptr_eq(cypher_ast_comparison_get_operator(exp, 2), NULL);
ck_assert_ptr_eq(cypher_ast_comparison_get_argument(exp, 3), NULL);
}
END_TEST
START_TEST (parse_apply)
{
struct cypher_input_position last = cypher_input_position_zero;
result = cypher_parse(
"RETURN foo(bar, baz), sum(DISTINCT a), count(*), count(DISTINCT *);",
&last, NULL, 0);
ck_assert_ptr_ne(result, NULL);
ck_assert_int_eq(last.offset, 67);
ck_assert(cypher_parse_result_fprint_ast(result, memstream, 0, NULL, 0) == 0);
fflush(memstream);
const char *expected = "\n"
" @0 0..67 statement body=@1\n"
" @1 0..67 > query clauses=[@2]\n"
" @2 0..66 > > RETURN projections=[@3, @9, @14, @18]\n"
" @3 7..20 > > > projection expression=@4, alias=@8\n"
" @4 7..20 > > > > apply @5(@6, @7)\n"
" @5 7..10 > > > > > function name `foo`\n"
" @6 11..14 > > > > > identifier `bar`\n"
" @7 16..19 > > > > > identifier `baz`\n"
" @8 7..20 > > > > identifier `foo(bar, baz)`\n"
" @9 22..37 > > > projection expression=@10, alias=@13\n"
"@10 22..37 > > > > apply @11(DISTINCT @12)\n"
"@11 22..25 > > > > > function name `sum`\n"
"@12 35..36 > > > > > identifier `a`\n"
"@13 22..37 > > > > identifier `sum(DISTINCT a)`\n"
"@14 39..47 > > > projection expression=@15, alias=@17\n"
"@15 39..47 > > > > apply all @16(*)\n"
"@16 39..44 > > > > > function name `count`\n"
"@17 39..47 > > > > identifier `count(*)`\n"
"@18 49..66 > > > projection expression=@19, alias=@21\n"
"@19 49..66 > > > > apply all @20(DISTINCT *)\n"
"@20 49..54 > > > > > function name `count`\n"
"@21 49..66 > > > > identifier `count(DISTINCT *)`\n";
ck_assert_str_eq(memstream_buffer, expected);
const cypher_astnode_t *ast = cypher_parse_result_get_directive(result, 0);
const cypher_astnode_t *query = cypher_ast_statement_get_body(ast);
const cypher_astnode_t *clause = cypher_ast_query_get_clause(query, 0);
ck_assert_int_eq(cypher_astnode_type(clause), CYPHER_AST_RETURN);
ck_assert_int_eq(cypher_ast_return_nprojections(clause), 4);
const cypher_astnode_t *proj = cypher_ast_return_get_projection(clause, 0);
ck_assert_int_eq(cypher_astnode_type(proj), CYPHER_AST_PROJECTION);
const cypher_astnode_t *exp = cypher_ast_projection_get_expression(proj);
ck_assert_int_eq(cypher_astnode_type(exp), CYPHER_AST_APPLY_OPERATOR);
const cypher_astnode_t *func_name =
cypher_ast_apply_operator_get_func_name(exp);
ck_assert_int_eq(cypher_astnode_type(func_name), CYPHER_AST_FUNCTION_NAME);
ck_assert_str_eq(cypher_ast_function_name_get_value(func_name), "foo");
ck_assert(!cypher_ast_apply_operator_get_distinct(exp));
ck_assert_int_eq(cypher_ast_apply_operator_narguments(exp), 2);
const cypher_astnode_t *arg = cypher_ast_apply_operator_get_argument(exp, 0);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_IDENTIFIER);
ck_assert_str_eq(cypher_ast_identifier_get_name(arg), "bar");
arg = cypher_ast_apply_operator_get_argument(exp, 1);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_IDENTIFIER);
ck_assert_str_eq(cypher_ast_identifier_get_name(arg), "baz");
ck_assert_ptr_eq(cypher_ast_apply_operator_get_argument(exp, 2), NULL);
proj = cypher_ast_return_get_projection(clause, 1);
ck_assert_int_eq(cypher_astnode_type(proj), CYPHER_AST_PROJECTION);
exp = cypher_ast_projection_get_expression(proj);
ck_assert_int_eq(cypher_astnode_type(exp), CYPHER_AST_APPLY_OPERATOR);
func_name = cypher_ast_apply_operator_get_func_name(exp);
ck_assert_int_eq(cypher_astnode_type(func_name), CYPHER_AST_FUNCTION_NAME);
ck_assert_str_eq(cypher_ast_function_name_get_value(func_name), "sum");
ck_assert(cypher_ast_apply_operator_get_distinct(exp));
ck_assert_int_eq(cypher_ast_apply_operator_narguments(exp), 1);
arg = cypher_ast_apply_operator_get_argument(exp, 0);
ck_assert_int_eq(cypher_astnode_type(arg), CYPHER_AST_IDENTIFIER);
ck_assert_str_eq(cypher_ast_identifier_get_name(arg), "a");
ck_assert_ptr_eq(cypher_ast_apply_operator_get_argument(exp, 1), NULL);
proj = cypher_ast_return_get_projection(clause, 2);
ck_assert_int_eq(cypher_astnode_type(proj), CYPHER_AST_PROJECTION);
exp = cypher_ast_projection_get_expression(proj);
ck_assert_int_eq(cypher_astnode_type(exp), CYPHER_AST_APPLY_ALL_OPERATOR);
func_name = cypher_ast_apply_all_operator_get_func_name(exp);
ck_assert_int_eq(cypher_astnode_type(func_name), CYPHER_AST_FUNCTION_NAME);
ck_assert_str_eq(cypher_ast_function_name_get_value(func_name), "count");
ck_assert(!cypher_ast_apply_all_operator_get_distinct(exp));
proj = cypher_ast_return_get_projection(clause, 3);
ck_assert_int_eq(cypher_astnode_type(proj), CYPHER_AST_PROJECTION);
exp = cypher_ast_projection_get_expression(proj);
ck_assert_int_eq(cypher_astnode_type(exp), CYPHER_AST_APPLY_ALL_OPERATOR);
func_name = cypher_ast_apply_all_operator_get_func_name(exp);
ck_assert_int_eq(cypher_astnode_type(func_name), CYPHER_AST_FUNCTION_NAME);
ck_assert_str_eq(cypher_ast_function_name_get_value(func_name), "count");
ck_assert(cypher_ast_apply_all_operator_get_distinct(exp));
ck_assert_ptr_eq(cypher_ast_return_get_projection(clause, 4), NULL);
}
END_TEST
START_TEST (parse_subscript)
{
struct cypher_input_position last = cypher_input_position_zero;
result = cypher_parse("RETURN foo[n];", &last, NULL, 0);
ck_assert_ptr_ne(result, NULL);
ck_assert_int_eq(last.offset, 14);
ck_assert(cypher_parse_result_fprint_ast(result, memstream, 0, NULL, 0) == 0);
fflush(memstream);
const char *expected = "\n"
"@0 0..14 statement body=@1\n"
"@1 0..14 > query clauses=[@2]\n"
"@2 0..13 > > RETURN projections=[@3]\n"
"@3 7..13 > > > projection expression=@4, alias=@7\n"
"@4 7..13 > > > > subscript @5[@6]\n"
"@5 7..10 > > > > > identifier `foo`\n"
"@6 11..12 > > > > > identifier `n`\n"
"@7 7..13 > > > > identifier `foo[n]`\n";
ck_assert_str_eq(memstream_buffer, expected);
const cypher_astnode_t *ast = cypher_parse_result_get_directive(result, 0);
const cypher_astnode_t *query = cypher_ast_statement_get_body(ast);
const cypher_astnode_t *clause = cypher_ast_query_get_clause(query, 0);
ck_assert_int_eq(cypher_astnode_type(clause), CYPHER_AST_RETURN);
ck_assert_int_eq(cypher_ast_return_nprojections(clause), 1);
const cypher_astnode_t *proj = cypher_ast_return_get_projection(clause, 0);
ck_assert_int_eq(cypher_astnode_type(proj), CYPHER_AST_PROJECTION);
const cypher_astnode_t *exp = cypher_ast_projection_get_expression(proj);
ck_assert_int_eq(cypher_astnode_type(exp), CYPHER_AST_SUBSCRIPT_OPERATOR);
const cypher_astnode_t *node = cypher_ast_subscript_operator_get_expression(exp);
ck_assert_int_eq(cypher_astnode_type(node), CYPHER_AST_IDENTIFIER);
ck_assert_str_eq(cypher_ast_identifier_get_name(node), "foo");
node = cypher_ast_subscript_operator_get_subscript(exp);
ck_assert_int_eq(cypher_astnode_type(node), CYPHER_AST_IDENTIFIER);
ck_assert_str_eq(cypher_ast_identifier_get_name(node), "n");
}
END_TEST
START_TEST (parse_slice)
{
struct cypher_input_position last = cypher_input_position_zero;
result = cypher_parse("RETURN foo[1..5], bar[..n+5], baz[..];", &last, NULL, 0);
ck_assert_ptr_ne(result, NULL);
ck_assert_int_eq(last.offset, 38);
ck_assert(cypher_parse_result_fprint_ast(result, memstream, 0, NULL, 0) == 0);
fflush(memstream);
const char *expected = "\n"
" @0 0..38 statement body=@1\n"
" @1 0..38 > query clauses=[@2]\n"
" @2 0..37 > > RETURN projections=[@3, @9, @16]\n"
" @3 7..16 > > > projection expression=@4, alias=@8\n"
" @4 7..16 > > > > slice @5[@6..@7]\n"
" @5 7..10 > > > > > identifier `foo`\n"
" @6 11..12 > > > > > integer 1\n"
" @7 14..15 > > > > > integer 5\n"
" @8 7..16 > > > > identifier `foo[1..5]`\n"
" @9 18..28 > > > projection expression=@10, alias=@15\n"
"@10 18..28 > > > > slice @11[..@12]\n"
"@11 18..21 > > > > > identifier `bar`\n"
"@12 24..27 > > > > > binary operator @13 + @14\n"
"@13 24..25 > > > > > > identifier `n`\n"
"@14 26..27 > > > > > > integer 5\n"
"@15 18..28 > > > > identifier `bar[..n+5]`\n"
"@16 30..37 > > > projection expression=@17, alias=@19\n"
"@17 30..37 > > > > slice @18[..]\n"
"@18 30..33 > > > > > identifier `baz`\n"
"@19 30..37 > > > > identifier `baz[..]`\n";
ck_assert_str_eq(memstream_buffer, expected);
const cypher_astnode_t *ast = cypher_parse_result_get_directive(result, 0);
const cypher_astnode_t *query = cypher_ast_statement_get_body(ast);
const cypher_astnode_t *clause = cypher_ast_query_get_clause(query, 0);
ck_assert_int_eq(cypher_astnode_type(clause), CYPHER_AST_RETURN);
ck_assert_int_eq(cypher_ast_return_nprojections(clause), 3);
const cypher_astnode_t *proj = cypher_ast_return_get_projection(clause, 0);
ck_assert_int_eq(cypher_astnode_type(proj), CYPHER_AST_PROJECTION);
const cypher_astnode_t *exp = cypher_ast_projection_get_expression(proj);
ck_assert_int_eq(cypher_astnode_type(exp), CYPHER_AST_SLICE_OPERATOR);
const cypher_astnode_t *node = cypher_ast_slice_operator_get_expression(exp);
ck_assert_int_eq(cypher_astnode_type(node), CYPHER_AST_IDENTIFIER);
ck_assert_str_eq(cypher_ast_identifier_get_name(node), "foo");
const cypher_astnode_t *start = cypher_ast_slice_operator_get_start(exp);
ck_assert_int_eq(cypher_astnode_type(start), CYPHER_AST_INTEGER);
ck_assert_str_eq(cypher_ast_integer_get_valuestr(start), "1");
const cypher_astnode_t *end = cypher_ast_slice_operator_get_end(exp);
ck_assert_int_eq(cypher_astnode_type(end), CYPHER_AST_INTEGER);
ck_assert_str_eq(cypher_ast_integer_get_valuestr(end), "5");
proj = cypher_ast_return_get_projection(clause, 1);
ck_assert_int_eq(cypher_astnode_type(proj), CYPHER_AST_PROJECTION);
exp = cypher_ast_projection_get_expression(proj);
ck_assert_int_eq(cypher_astnode_type(exp), CYPHER_AST_SLICE_OPERATOR);
node = cypher_ast_slice_operator_get_expression(exp);
ck_assert_int_eq(cypher_astnode_type(node), CYPHER_AST_IDENTIFIER);
ck_assert_str_eq(cypher_ast_identifier_get_name(node), "bar");
start = cypher_ast_slice_operator_get_start(exp);
ck_assert_ptr_eq(start, NULL);
end = cypher_ast_slice_operator_get_end(exp);
ck_assert_int_eq(cypher_astnode_type(end), CYPHER_AST_BINARY_OPERATOR);
proj = cypher_ast_return_get_projection(clause, 2);
ck_assert_int_eq(cypher_astnode_type(proj), CYPHER_AST_PROJECTION);
exp = cypher_ast_projection_get_expression(proj);
ck_assert_int_eq(cypher_astnode_type(exp), CYPHER_AST_SLICE_OPERATOR);
node = cypher_ast_slice_operator_get_expression(exp);
ck_assert_int_eq(cypher_astnode_type(node), CYPHER_AST_IDENTIFIER);
ck_assert_str_eq(cypher_ast_identifier_get_name(node), "baz");
start = cypher_ast_slice_operator_get_start(exp);
ck_assert_ptr_eq(start, NULL);
end = cypher_ast_slice_operator_get_end(exp);
ck_assert_ptr_eq(end, NULL);
}
END_TEST
TCase* expression_tcase(void)
{
TCase *tc = tcase_create("expression");
tcase_add_checked_fixture(tc, setup, teardown);
tcase_add_test(tc, parse_simple_unary_operators);
tcase_add_test(tc, parse_simple_binary_operators);
tcase_add_test(tc, parse_unary_and_binary_operators);
tcase_add_test(tc, parse_comparison_operators);
tcase_add_test(tc, parse_apply);
tcase_add_test(tc, parse_subscript);
tcase_add_test(tc, parse_slice);
return tc;
}